improved 'generate' command for module

This reverts commit 15cdf7382b.

.github/workflows/latest-pre.yml

@@ -13,10 +13,10 @@ jobs:
         os: [ubuntu-latest, windows-latest, macOS-latest]
     steps:
 
-    - name: Set up Go 1.12
+    - name: Set up Go 1.13
       uses: actions/setup-go@v1
       with:
-        go-version: 1.12
+        go-version: 1.13
       id: go
 
     - name: Check out code into the Go module directory
@@ -27,6 +27,6 @@ jobs:
         go get -v -d ./...
     - name: Build
       run: go build -v ./cmd/wails
-    
+
     - name: Test
       run: ./wails version

.github/workflows/pr.yml

@@ -13,10 +13,10 @@ jobs:
         os: [ubuntu-latest, windows-latest, macOS-latest]
     steps:
 
-    - name: Set up Go 1.12
+    - name: Set up Go 1.13
       uses: actions/setup-go@v1
       with:
-        go-version: 1.12
+        go-version: 1.13
       id: go
 
     - name: Check out code into the Go module directory
@@ -27,6 +27,6 @@ jobs:
         go get -v -d ./...
     - name: Build
       run: go build -v ./cmd/wails
-    
+
     - name: Test
       run: ./wails version

.github/workflows/release.yml

@@ -4,7 +4,7 @@ on:
     branches:
     - master
     tags:
-    - '!**pre**' 
+    - '!**pre**'
 jobs:
 
   build:
@@ -15,10 +15,10 @@ jobs:
         os: [ubuntu-latest, windows-latest, macOS-latest]
     steps:
 
-    - name: Set up Go 1.12
+    - name: Set up Go 1.13
       uses: actions/setup-go@v1
       with:
-        go-version: 1.12
+        go-version: 1.13
       id: go
 
     - name: Check out code into the Go module directory
@@ -29,6 +29,6 @@ jobs:
         go get -v -d ./...
     - name: Build
       run: go build -v ./cmd/wails
-    
+
     - name: Test
       run: ./wails version

.gitignore

@@ -16,4 +16,13 @@ examples/**/example*
 cmd/wails/wails
 .DS_Store
 tmp
-node_modules/
+node_modules/
+package.json.md5
+v2/test/**/frontend/dist
+v2/test/**/build/
+v2/test/frameless/icon.png
+v2/test/hidden/icon.png
+v2/internal/ffenestri/runtime.c
+v2/internal/runtime/assets/desktop.js
+v2/test/kitchensink/frontend/public/bundle.*
+v2/pkg/parser/testproject/frontend/wails

CONTRIBUTORS.md

@@ -15,11 +15,20 @@ Wails is what it is because of the time and effort given by these great people.
   * [admin_3.exe](https://github.com/bh90210)
   * [iceleo-com](https://github.com/iceleo-com)
   * [fallendusk](https://github.com/fallendusk)
-  * [Florian Didran](https://github.com/fdidron)
   * [Nikolai Zimmermann](https://github.com/Chronophylos)
   * [Toyam Cox](https://github.com/Vaelatern)
   * [Robin Eklind](https://github.com/mewmew)
   * [Kris Raney](https://github.com/kraney)
   * [Jack Mordaunt](https://github.com/JackMordaunt)
   * [Michael Hipp](https://github.com/MichaelHipp)
-  * [Travis McLane](https://github.com/tmclane)
+  * [Travis McLane](https://github.com/tmclane)
+  * [Reuben Thomas-Davis](https://github.com/Rested)
+  * [Jarek](https://github.com/Jarek-SRT)
+  * [Konez2k](https://github.com/konez2k)
+  * [msms](https://github.com/sayuthisobri)
+  * [dedo1911](https://github.com/dedo1911)
+  * [Florian Didron](https://github.com/fdidron)
+  * [Christopher Murphy](https://github.com/Splode)
+  * [Zámbó, Levente](https://github.com/Lyimmi)
+  * [artem](https://github.com/Unix4ever)
+  * [Tim Kipp](https://github.com/timkippdev)

README.md

@@ -36,7 +36,7 @@ The official docs can be found at [https://wails.app](https://wails.app).
 
 Wails uses cgo to bind to the native rendering engines so a number of platform dependent libraries are needed as well as an installation of Go. The basic requirements are:
 
-- Go 1.12
+- Go 1.13
 - npm
 
 ### MacOS
@@ -55,9 +55,9 @@ _Debian: 8, 9, 10_
 
 _Ubuntu: 16.04, 18.04, 19.04_
 
-_Also succesfully tested on: Zorin 15, Parrot 4.7, Linuxmint 19, Elementary 5, Kali, Neon_
+_Also succesfully tested on: Zorin 15, Parrot 4.7, Linuxmint 19, Elementary 5, Kali, Neon_, Pop!_OS
 
-#### Arch Linux
+#### Arch Linux / ArchLabs
 
 `sudo pacman -S webkit2gtk gtk3`
 

app_other.go

@@ -1,4 +1,4 @@
-// +build +linux +darwin !windows
+// +build linux darwin !windows
 
 package wails
 

cmd/fs.go

@@ -12,6 +12,7 @@ import (
 	"path"
 	"path/filepath"
 	"runtime"
+	"strings"
 
 	"github.com/leaanthony/slicer"
 )
@@ -47,6 +48,22 @@ func (fs *FSHelper) FileExists(path string) bool {
 	return fi.Mode().IsRegular()
 }
 
+// FindFile returns the first occurrence of match inside path.
+func (fs *FSHelper) FindFile(path, match string) (string, error) {
+	files, err := ioutil.ReadDir(path)
+	if err != nil {
+		return "", err
+	}
+
+	for _, f := range files {
+		if !f.IsDir() && strings.Contains(f.Name(), match) {
+			return f.Name(), nil
+		}
+	}
+
+	return "", fmt.Errorf("file not found")
+}
+
 // CreateFile creates a file at the given filename location with the contents
 // set to the given data. It will create intermediary directories if needed.
 func (fs *FSHelper) CreateFile(filename string, data []byte) error {
@@ -100,10 +117,10 @@ func (fs *FSHelper) RemoveFile(filename string) error {
 }
 
 // RemoveFiles removes the given filenames
-func (fs *FSHelper) RemoveFiles(files []string) error {
+func (fs *FSHelper) RemoveFiles(files []string, continueOnError bool) error {
 	for _, filename := range files {
 		err := os.Remove(filename)
-		if err != nil {
+		if err != nil && !continueOnError {
 			return err
 		}
 	}

cmd/helpers.go

@@ -5,12 +5,15 @@ import (
 	"io/ioutil"
 	"os"
 	"os/exec"
+	"os/user"
 	"path/filepath"
 	"runtime"
+	"strconv"
 	"strings"
 	"time"
 
 	"github.com/leaanthony/mewn"
+	"github.com/leaanthony/mewn/lib"
 	"github.com/leaanthony/slicer"
 	"github.com/leaanthony/spinner"
 )
@@ -56,21 +59,141 @@ func InstallGoDependencies(verbose bool) error {
 	return nil
 }
 
-// BuildApplication will attempt to build the project based on the given inputs
-func BuildApplication(binaryName string, forceRebuild bool, buildMode string, packageApp bool, projectOptions *ProjectOptions) error {
+// EmbedAssets will embed the built frontend assets via mewn.
+func EmbedAssets() ([]string, error) {
+	mewnFiles := lib.GetMewnFiles([]string{}, false)
 
-	// Generate Windows assets if needed
-	if runtime.GOOS == "windows" {
-		cleanUp := !packageApp
-		err := NewPackageHelper().PackageWindows(projectOptions, cleanUp)
-		if err != nil {
-			return err
-		}
+	referencedAssets, err := lib.GetReferencedAssets(mewnFiles)
+	if err != nil {
+		return []string{}, err
 	}
 
-	// Check Mewn is installed
-	err := CheckMewn(projectOptions.Verbose)
+	targetFiles := []string{}
+
+	for _, referencedAsset := range referencedAssets {
+		packfileData, err := lib.GeneratePackFileString(referencedAsset, false)
+		if err != nil {
+			return []string{}, err
+		}
+		targetFile := filepath.Join(referencedAsset.BaseDir, referencedAsset.PackageName+"-mewn.go")
+		targetFiles = append(targetFiles, targetFile)
+		ioutil.WriteFile(targetFile, []byte(packfileData), 0644)
+	}
+
+	return targetFiles, nil
+}
+
+func InitializeCrossCompilation(verbose bool) error {
+	// Check Docker
+	if err := CheckIfInstalled("docker"); err != nil {
+		return err
+	}
+
+	var packSpinner *spinner.Spinner
+	if !verbose {
+		packSpinner = spinner.New("Pulling wailsapp/xgo:latest docker image... (may take a while)")
+		packSpinner.SetSpinSpeed(50)
+		packSpinner.Start()
+	} else {
+		println("Pulling wailsapp/xgo:latest docker image... (may take a while)")
+	}
+
+	err := NewProgramHelper(verbose).RunCommandArray([]string{"docker",
+		"pull", "wailsapp/xgo:latest"})
+
 	if err != nil {
+		if packSpinner != nil {
+			packSpinner.Error()
+		}
+		return err
+	}
+	if packSpinner != nil {
+		packSpinner.Success()
+	}
+
+	return nil
+}
+
+// BuildDocker builds the project using the cross compiling wailsapp/xgo:latest container
+func BuildDocker(binaryName string, buildMode string, projectOptions *ProjectOptions) error {
+	var packSpinner *spinner.Spinner
+	if buildMode == BuildModeBridge {
+		return fmt.Errorf("you cant serve the application in cross-compilation")
+	}
+
+	// Check build directory
+	buildDirectory := filepath.Join(fs.Cwd(), "build")
+	if !fs.DirExists(buildDirectory) {
+		fs.MkDir(buildDirectory)
+	}
+
+	buildCommand := slicer.String()
+	userid := 1000
+	user, _ := user.Current()
+	if i, err := strconv.Atoi(user.Uid); err == nil {
+		userid = i
+	}
+	for _, arg := range []string{
+		"docker",
+		"run",
+		"--rm",
+		"-v", fmt.Sprintf("%s:/build", filepath.Join(fs.Cwd(), "build")),
+		"-v", fmt.Sprintf("%s:/source", fs.Cwd()),
+		"-e", fmt.Sprintf("LOCAL_USER_ID=%v", userid),
+		"-e", fmt.Sprintf("FLAG_LDFLAGS=%s", ldFlags(projectOptions, buildMode)),
+		"-e", "FLAG_V=false",
+		"-e", "FLAG_X=false",
+		"-e", "FLAG_RACE=false",
+		"-e", "FLAG_BUILDMODE=default",
+		"-e", "FLAG_TRIMPATH=false",
+		"-e", fmt.Sprintf("TARGETS=%s", projectOptions.Platform+"/"+projectOptions.Architecture),
+		"-e", "GOPROXY=",
+		"-e", "GO111MODULE=on",
+		"wailsapp/xgo:latest",
+		".",
+	} {
+		buildCommand.Add(arg)
+	}
+
+	compileMessage := fmt.Sprintf(
+		"Packing + Compiling project for %s/%s using docker image wailsapp/xgo:latest",
+		projectOptions.Platform, projectOptions.Architecture)
+
+	if buildMode == BuildModeDebug {
+		compileMessage += " (Debug Mode)"
+	}
+
+	if !projectOptions.Verbose {
+		packSpinner = spinner.New(compileMessage + "...")
+		packSpinner.SetSpinSpeed(50)
+		packSpinner.Start()
+	} else {
+		println(compileMessage)
+	}
+
+	err := NewProgramHelper(projectOptions.Verbose).RunCommandArray(buildCommand.AsSlice())
+	if err != nil {
+		if packSpinner != nil {
+			packSpinner.Error()
+		}
+		return err
+	}
+	if packSpinner != nil {
+		packSpinner.Success()
+	}
+
+	return nil
+}
+
+// BuildNative builds on the target platform itself.
+func BuildNative(binaryName string, forceRebuild bool, buildMode string, projectOptions *ProjectOptions) error {
+
+	// Check Mewn is installed
+	if err := CheckMewn(projectOptions.Verbose); err != nil {
+		return err
+	}
+
+	if err := CheckWindres(); err != nil {
 		return err
 	}
 
@@ -90,18 +213,17 @@ func BuildApplication(binaryName string, forceRebuild bool, buildMode string, pa
 	}
 
 	buildCommand := slicer.String()
-	buildCommand.Add("mewn")
+	buildCommand.Add("go")
 
+	buildCommand.Add("build")
 	if buildMode == BuildModeBridge {
 		// Ignore errors
 		buildCommand.Add("-i")
 	}
 
-	buildCommand.Add("build")
-
 	if binaryName != "" {
 		// Alter binary name based on OS
-		switch runtime.GOOS {
+		switch projectOptions.Platform {
 		case "windows":
 			if !strings.HasSuffix(binaryName, ".exe") {
 				binaryName += ".exe"
@@ -111,7 +233,7 @@ func BuildApplication(binaryName string, forceRebuild bool, buildMode string, pa
 				binaryName = strings.TrimSuffix(binaryName, ".exe")
 			}
 		}
-		buildCommand.Add("-o", binaryName)
+		buildCommand.Add("-o", filepath.Join("build", binaryName))
 	}
 
 	// If we are forcing a rebuild
@@ -119,31 +241,13 @@ func BuildApplication(binaryName string, forceRebuild bool, buildMode string, pa
 		buildCommand.Add("-a")
 	}
 
-	// Setup ld flags
-	ldflags := "-w -s "
-	if buildMode == BuildModeDebug {
-		ldflags = ""
+	buildCommand.AddSlice([]string{"-ldflags", ldFlags(projectOptions, buildMode)})
+
+	if projectOptions.Verbose {
+		fmt.Printf("Command: %v\n", buildCommand.AsSlice())
 	}
 
-	// Add windows flags
-	if runtime.GOOS == "windows" && buildMode == BuildModeProd {
-		ldflags += "-H windowsgui "
-	}
-
-	ldflags += "-X github.com/wailsapp/wails.BuildMode=" + buildMode
-
-	// If we wish to generate typescript
-	if projectOptions.typescriptDefsFilename != "" {
-		cwd, err := os.Getwd()
-		if err != nil {
-			return err
-		}
-		filename := filepath.Join(cwd, projectOptions.FrontEnd.Dir, projectOptions.typescriptDefsFilename)
-		ldflags += " -X github.com/wailsapp/wails/lib/binding.typescriptDefinitionFilename=" + filename
-	}
-
-	buildCommand.AddSlice([]string{"-ldflags", ldflags})
-	err = NewProgramHelper(projectOptions.Verbose).RunCommandArray(buildCommand.AsSlice())
+	err := NewProgramHelper(projectOptions.Verbose).RunCommandArray(buildCommand.AsSlice())
 	if err != nil {
 		if packSpinner != nil {
 			packSpinner.Error()
@@ -154,7 +258,57 @@ func BuildApplication(binaryName string, forceRebuild bool, buildMode string, pa
 		packSpinner.Success()
 	}
 
-	// packageApp
+	return nil
+}
+
+// BuildApplication will attempt to build the project based on the given inputs
+func BuildApplication(binaryName string, forceRebuild bool, buildMode string, packageApp bool, projectOptions *ProjectOptions) error {
+	var err error
+
+	// embed resources
+	targetFiles, err := EmbedAssets()
+	if err != nil {
+		return err
+	}
+
+	if projectOptions.CrossCompile {
+		if err := InitializeCrossCompilation(projectOptions.Verbose); err != nil {
+			return err
+		}
+	}
+
+	helper := NewPackageHelper(projectOptions.Platform)
+
+	// Generate windows resources
+	if projectOptions.Platform == "windows" {
+		if err := helper.PackageWindows(projectOptions, false); err != nil {
+			return err
+		}
+	}
+
+	// cleanup temporary embedded assets
+	defer func() {
+		for _, filename := range targetFiles {
+			if err := os.Remove(filename); err != nil {
+				fmt.Println(err)
+			}
+		}
+		// Removed by popular demand
+		// TODO: Potentially add a flag to cleanup
+		// if projectOptions.Platform == "windows" {
+		// 	helper.CleanWindows(projectOptions)
+		// }
+	}()
+
+	if projectOptions.CrossCompile {
+		err = BuildDocker(binaryName, buildMode, projectOptions)
+	} else {
+		err = BuildNative(binaryName, forceRebuild, buildMode, projectOptions)
+	}
+	if err != nil {
+		return err
+	}
+
 	if packageApp {
 		err = PackageApplication(projectOptions)
 		if err != nil {
@@ -167,22 +321,14 @@ func BuildApplication(binaryName string, forceRebuild bool, buildMode string, pa
 
 // PackageApplication will attempt to package the application in a platform dependent way
 func PackageApplication(projectOptions *ProjectOptions) error {
-	// Package app
-	message := "Generating .app"
-	if runtime.GOOS == "windows" {
-		err := CheckWindres()
-		if err != nil {
-			return err
-		}
-		message = "Generating resource bundle"
-	}
 	var packageSpinner *spinner.Spinner
 	if projectOptions.Verbose {
-		packageSpinner = spinner.New(message)
+		packageSpinner = spinner.New("Packaging application...")
 		packageSpinner.SetSpinSpeed(50)
 		packageSpinner.Start()
 	}
-	err := NewPackageHelper().Package(projectOptions)
+
+	err := NewPackageHelper(projectOptions.Platform).Package(projectOptions)
 	if err != nil {
 		if packageSpinner != nil {
 			packageSpinner.Error()
@@ -244,7 +390,7 @@ func CheckMewn(verbose bool) (err error) {
 
 // CheckWindres checks if Windres is installed and if not, aborts
 func CheckWindres() (err error) {
-	if runtime.GOOS != "windows" {
+	if runtime.GOOS != "windows" { // FIXME: Handle windows cross-compile for windows!
 		return nil
 	}
 	programHelper := NewProgramHelper()
@@ -254,6 +400,15 @@ func CheckWindres() (err error) {
 	return nil
 }
 
+// CheckIfInstalled returns if application is installed
+func CheckIfInstalled(application string) (err error) {
+	programHelper := NewProgramHelper()
+	if !programHelper.IsInstalled(application) {
+		return fmt.Errorf("%s not installed. Ensure you have installed %s correctly", application, application)
+	}
+	return nil
+}
+
 // InstallFrontendDeps attempts to install the frontend dependencies based on the given options
 func InstallFrontendDeps(projectDir string, projectOptions *ProjectOptions, forceRebuild bool, caller string) error {
 
@@ -377,7 +532,7 @@ func ServeProject(projectOptions *ProjectOptions, logger *Logger) error {
 		time.Sleep(2 * time.Second)
 		logger.Green(">>>>> To connect, you will need to run '" + projectOptions.FrontEnd.Serve + "' in the '" + projectOptions.FrontEnd.Dir + "' directory <<<<<")
 	}()
-	location, err := filepath.Abs(projectOptions.BinaryName)
+	location, err := filepath.Abs(filepath.Join("build", projectOptions.BinaryName))
 	if err != nil {
 		return err
 	}
@@ -393,3 +548,33 @@ func ServeProject(projectOptions *ProjectOptions, logger *Logger) error {
 
 	return nil
 }
+
+func ldFlags(po *ProjectOptions, buildMode string) string {
+	// Setup ld flags
+	ldflags := "-w -s "
+	if buildMode == BuildModeDebug {
+		ldflags = ""
+	}
+
+	// Add windows flags
+	if po.Platform == "windows" && buildMode == BuildModeProd {
+		ldflags += "-H windowsgui "
+	}
+
+	ldflags += "-X github.com/wailsapp/wails.BuildMode=" + buildMode
+
+	// Add additional ldflags passed in via the `ldflags` cli flag
+	if len(po.LdFlags) > 0 {
+		ldflags += " " + po.LdFlags
+	}
+
+	// If we wish to generate typescript
+	if po.typescriptDefsFilename != "" {
+		cwd, err := os.Getwd()
+		if err == nil {
+			filename := filepath.Join(cwd, po.FrontEnd.Dir, po.typescriptDefsFilename)
+			ldflags += " -X github.com/wailsapp/wails/lib/binding.typescriptDefinitionFilename=" + filename
+		}
+	}
+	return ldflags
+}

cmd/linux.go

@@ -53,6 +53,16 @@ const (
 	Deepin
 	// Raspbian distribution
 	Raspbian
+	// Tumbleweed (OpenSUSE) distribution
+	Tumbleweed
+	// Leap (OpenSUSE) distribution
+	Leap
+	// ArchLabs distribution
+	ArchLabs
+	// PopOS distribution
+	PopOS
+	// Solus distribution
+	Solus
 )
 
 // DistroInfo contains all the information relating to a linux distribution
@@ -101,7 +111,7 @@ func parseOsRelease(osRelease string) *DistroInfo {
 		}
 		switch splitLine[0] {
 		case "ID":
-			osID = strings.Trim(splitLine[1], "\"")
+			osID = strings.ToLower(strings.Trim(splitLine[1], "\""))
 		case "NAME":
 			osNAME = strings.Trim(splitLine[1], "\"")
 		case "VERSION_ID":
@@ -117,6 +127,8 @@ func parseOsRelease(osRelease string) *DistroInfo {
 		result.Distribution = CentOS
 	case "arch":
 		result.Distribution = Arch
+	case "archlabs":
+		result.Distribution = ArchLabs
 	case "debian":
 		result.Distribution = Debian
 	case "ubuntu":
@@ -147,6 +159,14 @@ func parseOsRelease(osRelease string) *DistroInfo {
 		result.Distribution = Deepin
 	case "raspbian":
 		result.Distribution = Raspbian
+	case "opensuse-tumbleweed":
+		result.Distribution = Tumbleweed
+	case "opensuse-leap":
+		result.Distribution = Leap
+	case "pop":
+		result.Distribution = PopOS
+	case "solus":
+		result.Distribution = Solus
 	default:
 		result.Distribution = Unknown
 	}
@@ -183,6 +203,17 @@ func DpkgInstalled(packageName string) (bool, error) {
 	return exitCode == 0, nil
 }
 
+// EOpkgInstalled uses dpkg to see if a package is installed
+func EOpkgInstalled(packageName string) (bool, error) {
+	program := NewProgramHelper()
+	eopkg := program.FindProgram("eopkg")
+	if eopkg == nil {
+		return false, fmt.Errorf("cannot check dependencies: eopkg not found")
+	}
+	stdout, _, _, _ := eopkg.Run("info", packageName)
+	return strings.HasPrefix(stdout, "Installed"), nil
+}
+
 // PacmanInstalled uses pacman to see if a package is installed.
 func PacmanInstalled(packageName string) (bool, error) {
 	program := NewProgramHelper()
@@ -254,5 +285,9 @@ func RequestSupportForDistribution(distroInfo *DistroInfo) error {
 
 	fmt.Println("Opening browser to file request.")
 	browser.OpenURL(fullURL + url.PathEscape(params))
+	result = Prompt("We have a guide for adding support for your distribution. Would you like to view it?", "yes")
+	if strings.ToLower(result) == "yes" {
+		browser.OpenURL("https://wails.app/guides/distro/")
+	}
 	return nil
 }

cmd/linux_test.go

@@ -22,5 +22,25 @@ UBUNTU_CODENAME=bionic
 	if result.Distribution != Ubuntu {
 		t.Errorf("expected 'Ubuntu' ID but got '%d'", result.Distribution)
 	}
-
+}
+
+func TestTumbleweedDetection(t *testing.T) {
+	osrelease := `
+NAME="openSUSE Tumbleweed"
+# VERSION="20200414"
+ID="opensuse-tumbleweed"
+ID_LIKE="opensuse suse"
+VERSION_ID="20200414"
+PRETTY_NAME="openSUSE Tumbleweed"
+ANSI_COLOR="0;32"
+CPE_NAME="cpe:/o:opensuse:tumbleweed:20200414"
+BUG_REPORT_URL="https://bugs.opensuse.org"
+HOME_URL="https://www.opensuse.org/"
+LOGO="distributor-logo"
+`
+
+	result := parseOsRelease(osrelease)
+	if result.Distribution != Tumbleweed {
+		t.Errorf("expected 'Tumbleweed' ID but got '%d'", result.Distribution)
+	}
 }

cmd/linuxdb.yaml

@@ -28,6 +28,15 @@ distributions:
         gccversioncommand: &gccdumpfullversion -dumpfullversion
         programs: *debiandefaultprograms
         libraries: *debiandefaultlibraries
+  pop:
+    id: pop
+    releases:
+      default:
+        version: default
+        name: Pop!_OS
+        gccversioncommand: &gccdumpfullversion -dumpfullversion
+        programs: *debiandefaultprograms
+        libraries: *debiandefaultlibraries
   kali:
     id: kali
     releases:
@@ -176,6 +185,15 @@ distributions:
         gccversioncommand: *gccdumpversion
         programs: *archdefaultprograms
         libraries: *archdefaultlibraries
+  archlabs:
+    id: archlabs
+    releases:
+      default:
+        version: default
+        name: ArchLabs
+        gccversioncommand: *gccdumpversion
+        programs: *archdefaultprograms
+        libraries: *archdefaultlibraries        
   manjaro:
     id: manjaro
     releases:
@@ -223,3 +241,51 @@ distributions:
         gccversioncommand: *gccdumpfullversion
         programs: *debiandefaultprograms
         libraries: *debiandefaultlibraries
+  solus:
+    id: solus
+    releases:
+      default:
+        version: default
+        name: Solus
+        gccversioncommand: *gccdumpfullversion
+        programs: &solusdefaultprograms
+          - name: gcc
+            help: Please install with `sudo eopkg it -c system.devel` and try again
+          - name: pkg-config
+            help: Please install with `sudo eopkg it -c system.devel` and try again
+          - name: npm
+            help: Please install with `sudo eopkg it nodejs` and try again
+        libraries: &solusdefaultlibraries
+          - name: libgtk-3-devel
+            help: Please install with `sudo eopkg it libgtk-3-devel` and try again
+          - name: libwebkit-gtk-devel
+            help: Please install with `sudo eopkg it libwebkit-gtk-devel` and try again
+        
+  opensuse-tumbleweed:
+    id: opensuse-tumbleweed
+    releases:
+      default:
+        version: default
+        name: openSUSE Tumbleweed
+        gccversioncommand: *gccdumpfullversion
+        programs: &opensusedefaultprograms
+          - name: gcc
+            help: Please install with `sudo zypper in gcc-c++` and try again
+          - name: pkg-config
+            help: Please install with `sudo zypper in pkgconf-pkg-config` and try again
+          - name: npm
+            help: Please install `sudo zypper in nodejs` and try again
+        libraries: &opensusedefaultlibraries
+          - name: gtk3-devel
+            help: Please install with `sudo zypper in gtk3-devel` and try again
+          - name: webkit2gtk3-devel
+            help: Please install with `sudo zypper in webkit2gtk3-devel` and try again
+  opensuse-leap:
+      id: opensuse-leap
+      releases:
+        default:
+          version: default
+          name: openSUSE Leap
+          gccversioncommand: *gccdumpfullversion
+          programs: *opensusedefaultprograms
+          libraries: *opensusedefaultlibraries

cmd/package.go

@@ -1,9 +1,12 @@
 package cmd
 
 import (
+	"bufio"
 	"bytes"
+	"encoding/binary"
 	"fmt"
 	"image"
+	"image/png"
 	"io/ioutil"
 	"os"
 	"path"
@@ -14,21 +17,24 @@ import (
 	"time"
 
 	"github.com/jackmordaunt/icns"
+	"golang.org/x/image/draw"
 )
 
 // PackageHelper helps with the 'wails package' command
 type PackageHelper struct {
-	fs     *FSHelper
-	log    *Logger
-	system *SystemHelper
+	platform string
+	fs       *FSHelper
+	log      *Logger
+	system   *SystemHelper
 }
 
 // NewPackageHelper creates a new PackageHelper!
-func NewPackageHelper() *PackageHelper {
+func NewPackageHelper(platform string) *PackageHelper {
 	return &PackageHelper{
-		fs:     NewFSHelper(),
-		log:    NewLogger(),
-		system: NewSystemHelper(),
+		platform: platform,
+		fs:       NewFSHelper(),
+		log:      NewLogger(),
+		system:   NewSystemHelper(),
 	}
 }
 
@@ -53,6 +59,111 @@ func newPlistData(title, exe, packageID, version, author string) *plistData {
 	}
 }
 
+type windowsIcoHeader struct {
+	_          uint16
+	imageType  uint16
+	imageCount uint16
+}
+
+type windowsIcoDescriptor struct {
+	width   uint8
+	height  uint8
+	colours uint8
+	_       uint8
+	planes  uint16
+	bpp     uint16
+	size    uint32
+	offset  uint32
+}
+
+type windowsIcoContainer struct {
+	Header windowsIcoDescriptor
+	Data   []byte
+}
+
+func generateWindowsIcon(pngFilename string, iconfile string) error {
+	sizes := []int{256, 128, 64, 48, 32, 16}
+
+	pngfile, err := os.Open(pngFilename)
+	if err != nil {
+		return err
+	}
+	defer pngfile.Close()
+
+	pngdata, err := png.Decode(pngfile)
+	if err != nil {
+		return err
+	}
+
+	icons := []windowsIcoContainer{}
+
+	for _, size := range sizes {
+		rect := image.Rect(0, 0, int(size), int(size))
+		rawdata := image.NewRGBA(rect)
+		scale := draw.CatmullRom
+		scale.Scale(rawdata, rect, pngdata, pngdata.Bounds(), draw.Over, nil)
+
+		icondata := new(bytes.Buffer)
+		writer := bufio.NewWriter(icondata)
+		err = png.Encode(writer, rawdata)
+		if err != nil {
+			return err
+		}
+		writer.Flush()
+
+		imgSize := size
+		if imgSize >= 256 {
+			imgSize = 0
+		}
+
+		data := icondata.Bytes()
+
+		icn := windowsIcoContainer{
+			Header: windowsIcoDescriptor{
+				width:  uint8(imgSize),
+				height: uint8(imgSize),
+				planes: 1,
+				bpp:    32,
+				size:   uint32(len(data)),
+			},
+			Data: data,
+		}
+		icons = append(icons, icn)
+	}
+
+	outfile, err := os.Create(iconfile)
+	if err != nil {
+		return err
+	}
+	defer outfile.Close()
+
+	ico := windowsIcoHeader{
+		imageType:  1,
+		imageCount: uint16(len(sizes)),
+	}
+	err = binary.Write(outfile, binary.LittleEndian, ico)
+	if err != nil {
+		return err
+	}
+
+	offset := uint32(6 + 16*len(sizes))
+	for _, icon := range icons {
+		icon.Header.offset = offset
+		err = binary.Write(outfile, binary.LittleEndian, icon.Header)
+		if err != nil {
+			return err
+		}
+		offset += icon.Header.size
+	}
+	for _, icon := range icons {
+		_, err = outfile.Write(icon.Data)
+		if err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
 func defaultString(val string, defaultVal string) string {
 	if val != "" {
 		return val
@@ -63,29 +174,30 @@ func defaultString(val string, defaultVal string) string {
 func (b *PackageHelper) getPackageFileBaseDir() string {
 	// Calculate template base dir
 	_, filename, _, _ := runtime.Caller(1)
-	return filepath.Join(path.Dir(filename), "packages", runtime.GOOS)
+	return filepath.Join(path.Dir(filename), "packages", b.platform)
 }
 
 // Package the application into a platform specific package
 func (b *PackageHelper) Package(po *ProjectOptions) error {
-	switch runtime.GOOS {
+	switch b.platform {
 	case "darwin":
-		// Check we have the exe
-		if !b.fs.FileExists(po.BinaryName) {
-			return fmt.Errorf("cannot bundle non-existent binary file '%s'. Please build with 'wails build' first", po.BinaryName)
-		}
 		return b.packageOSX(po)
 	case "windows":
-		return b.PackageWindows(po, false)
+		return b.PackageWindows(po, true)
 	case "linux":
-		return fmt.Errorf("linux is not supported at this time. Please see https://github.com/wailsapp/wails/issues/2")
+		return b.packageLinux(po)
 	default:
-		return fmt.Errorf("platform '%s' not supported for bundling yet", runtime.GOOS)
+		return fmt.Errorf("platform '%s' not supported for bundling yet", b.platform)
 	}
 }
 
+func (b *PackageHelper) packageLinux(po *ProjectOptions) error {
+	return nil
+}
+
 // Package the application for OSX
 func (b *PackageHelper) packageOSX(po *ProjectOptions) error {
+	build := path.Join(b.fs.Cwd(), "build")
 
 	system := NewSystemHelper()
 	config, err := system.LoadConfig()
@@ -100,39 +212,68 @@ func (b *PackageHelper) packageOSX(po *ProjectOptions) error {
 	packageID := strings.Join([]string{"wails", name, version}, ".")
 	plistData := newPlistData(name, exe, packageID, version, author)
 	appname := po.Name + ".app"
+	plistFilename := path.Join(build, appname, "Contents", "Info.plist")
+	customPlist := path.Join(b.fs.Cwd(), "info.plist")
 
 	// Check binary exists
-	source := path.Join(b.fs.Cwd(), exe)
-	if !b.fs.FileExists(source) {
-		// We need to build!
-		return fmt.Errorf("Target '%s' not available. Has it been compiled yet?", exe)
+	source := path.Join(build, exe)
+	if po.CrossCompile == true {
+		file, err := b.fs.FindFile(build, "darwin")
+		if err != nil {
+			return err
+		}
+		source = path.Join(build, file)
 	}
 
+	if !b.fs.FileExists(source) {
+		// We need to build!
+		return fmt.Errorf("Target '%s' not available. Has it been compiled yet?", source)
+	}
 	// Remove the existing package
 	os.RemoveAll(appname)
 
-	exeDir := path.Join(b.fs.Cwd(), appname, "/Contents/MacOS")
+	// Create directories
+	exeDir := path.Join(build, appname, "/Contents/MacOS")
 	b.fs.MkDirs(exeDir, 0755)
-	resourceDir := path.Join(b.fs.Cwd(), appname, "/Contents/Resources")
+	resourceDir := path.Join(build, appname, "/Contents/Resources")
 	b.fs.MkDirs(resourceDir, 0755)
-	tmpl := template.New("infoPlist")
-	plistFile := filepath.Join(b.getPackageFileBaseDir(), "info.plist")
-	infoPlist, err := ioutil.ReadFile(plistFile)
-	if err != nil {
-		return err
-	}
-	tmpl.Parse(string(infoPlist))
 
-	// Write the template to a buffer
-	var tpl bytes.Buffer
-	err = tmpl.Execute(&tpl, plistData)
-	if err != nil {
-		return err
-	}
-	filename := path.Join(b.fs.Cwd(), appname, "Contents", "Info.plist")
-	err = ioutil.WriteFile(filename, tpl.Bytes(), 0644)
-	if err != nil {
-		return err
+	// Do we have a custom plist in the project directory?
+	if !fs.FileExists(customPlist) {
+
+		// No - create a new plist from our defaults
+		tmpl := template.New("infoPlist")
+		plistFile := filepath.Join(b.getPackageFileBaseDir(), "info.plist")
+		infoPlist, err := ioutil.ReadFile(plistFile)
+		if err != nil {
+			return err
+		}
+		tmpl.Parse(string(infoPlist))
+
+		// Write the template to a buffer
+		var tpl bytes.Buffer
+		err = tmpl.Execute(&tpl, plistData)
+		if err != nil {
+			return err
+		}
+
+		// Save to the package
+		err = ioutil.WriteFile(plistFilename, tpl.Bytes(), 0644)
+		if err != nil {
+			return err
+		}
+
+		// Also write to project directory for customisation
+		err = ioutil.WriteFile(customPlist, tpl.Bytes(), 0644)
+		if err != nil {
+			return err
+		}
+	} else {
+		// Yes - we have a plist. Copy it to the package verbatim
+		err = fs.CopyFile(customPlist, plistFilename)
+		if err != nil {
+			return err
+		}
 	}
 
 	// Copy executable
@@ -150,22 +291,37 @@ func (b *PackageHelper) packageOSX(po *ProjectOptions) error {
 	return err
 }
 
+// CleanWindows removes any windows related files found in the directory
+func (b *PackageHelper) CleanWindows(po *ProjectOptions) {
+	pdir := b.fs.Cwd()
+	basename := strings.TrimSuffix(po.BinaryName, ".exe")
+	exts := []string{".ico", ".exe.manifest", ".rc", "-res.syso"}
+	rsrcs := []string{}
+	for _, ext := range exts {
+		rsrcs = append(rsrcs, filepath.Join(pdir, basename+ext))
+	}
+	b.fs.RemoveFiles(rsrcs, true)
+}
+
 // PackageWindows packages the application for windows platforms
 func (b *PackageHelper) PackageWindows(po *ProjectOptions, cleanUp bool) error {
+	outputDir := b.fs.Cwd()
 	basename := strings.TrimSuffix(po.BinaryName, ".exe")
 
-	// Copy icon
-	tgtIconFile := filepath.Join(b.fs.Cwd(), basename+".ico")
-	if !b.fs.FileExists(tgtIconFile) {
-		srcIconfile := filepath.Join(b.getPackageFileBaseDir(), "wails.ico")
-		err := b.fs.CopyFile(srcIconfile, tgtIconFile)
-		if err != nil {
-			return err
-		}
+	// Copy default icon if needed
+	icon, err := b.copyIcon()
+	if err != nil {
+		return err
+	}
+
+	// Generate icon from PNG
+	err = generateWindowsIcon(icon, basename+".ico")
+	if err != nil {
+		return err
 	}
 
 	// Copy manifest
-	tgtManifestFile := filepath.Join(b.fs.Cwd(), basename+".exe.manifest")
+	tgtManifestFile := filepath.Join(outputDir, basename+".exe.manifest")
 	if !b.fs.FileExists(tgtManifestFile) {
 		srcManifestfile := filepath.Join(b.getPackageFileBaseDir(), "wails.exe.manifest")
 		err := b.fs.CopyFile(srcManifestfile, tgtManifestFile)
@@ -175,7 +331,7 @@ func (b *PackageHelper) PackageWindows(po *ProjectOptions, cleanUp bool) error {
 	}
 
 	// Copy rc file
-	tgtRCFile := filepath.Join(b.fs.Cwd(), basename+".rc")
+	tgtRCFile := filepath.Join(outputDir, basename+".rc")
 	if !b.fs.FileExists(tgtRCFile) {
 		srcRCfile := filepath.Join(b.getPackageFileBaseDir(), "wails.rc")
 		rcfilebytes, err := ioutil.ReadFile(srcRCfile)
@@ -190,33 +346,37 @@ func (b *PackageHelper) PackageWindows(po *ProjectOptions, cleanUp bool) error {
 	}
 
 	// Build syso
-	sysofile := filepath.Join(b.fs.Cwd(), basename+"-res.syso")
+	sysofile := filepath.Join(outputDir, basename+"-res.syso")
 
-	batfile, err := fs.LocalDir(".")
-	if err != nil {
-		return err
-	}
+	// cross-compile
+	if b.platform != runtime.GOOS {
+		args := []string{
+			"docker", "run", "--rm",
+			"-v", outputDir + ":/build",
+			"--entrypoint", "/bin/sh",
+			"wailsapp/xgo:latest",
+			"-c", "/usr/bin/x86_64-w64-mingw32-windres -o /build/" + basename + "-res.syso /build/" + basename + ".rc",
+		}
+		if err := NewProgramHelper().RunCommandArray(args); err != nil {
+			return err
+		}
+	} else {
+		batfile, err := fs.LocalDir(".")
+		if err != nil {
+			return err
+		}
 
-	windresBatFile := filepath.Join(batfile.fullPath, "windres.bat")
-	windresCommand := []string{windresBatFile, sysofile, tgtRCFile}
-	err = NewProgramHelper().RunCommandArray(windresCommand)
-	if err != nil {
-		return err
-	}
-
-	// clean up
-	if cleanUp {
-		filesToDelete := []string{tgtIconFile, tgtManifestFile, tgtRCFile, sysofile}
-		err := b.fs.RemoveFiles(filesToDelete)
+		windresBatFile := filepath.Join(batfile.fullPath, "windres.bat")
+		windresCommand := []string{windresBatFile, sysofile, tgtRCFile}
+		err = NewProgramHelper().RunCommandArray(windresCommand)
 		if err != nil {
 			return err
 		}
 	}
-
 	return nil
 }
 
-func (b *PackageHelper) copyIcon(resourceDir string) (string, error) {
+func (b *PackageHelper) copyIcon() (string, error) {
 
 	// TODO: Read this from project.json
 	const appIconFilename = "appicon.png"
@@ -241,7 +401,7 @@ func (b *PackageHelper) copyIcon(resourceDir string) (string, error) {
 
 func (b *PackageHelper) packageIconOSX(resourceDir string) error {
 
-	srcIcon, err := b.copyIcon(resourceDir)
+	srcIcon, err := b.copyIcon()
 	if err != nil {
 		return err
 	}

cmd/packages/darwin/info.plist

@@ -1,5 +1,6 @@
 <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
 <plist version="1.0"><dict>
+	<key>CFBundlePackageType</key><string>APPL</string>
 	<key>CFBundleName</key><string>{{.Title}}</string>
 	<key>CFBundleExecutable</key><string>{{.Exe}}</string>
 	<key>CFBundleIdentifier</key><string>{{.PackageID}}</string>

cmd/packages/windows/wails.rc

@@ -1,2 +1,2 @@
 100 ICON    "$NAME$.ico"
-100 24      "$NAME$.exe.manifest"
+110 24      "$NAME$.exe.manifest"

cmd/program.go

@@ -138,11 +138,11 @@ func (p *ProgramHelper) RunCommand(command string) error {
 
 // RunCommandArray runs the command specified in the array
 func (p *ProgramHelper) RunCommandArray(args []string, dir ...string) error {
-	program := args[0]
+	programCommand := args[0]
 	// TODO: Run FindProgram here and get the full path to the exe
-	program, err := exec.LookPath(program)
+	program, err := exec.LookPath(programCommand)
 	if err != nil {
-		fmt.Printf("ERROR: Looks like '%s' isn't installed. Please install and try again.", program)
+		fmt.Printf("ERROR: Looks like '%s' isn't installed. Please install and try again.", programCommand)
 		return err
 	}
 

cmd/project.go

@@ -6,7 +6,6 @@ import (
 	"io/ioutil"
 	"os"
 	"path/filepath"
-	"runtime"
 	"sort"
 	"strings"
 
@@ -159,6 +158,10 @@ type ProjectOptions struct {
 	WailsVersion           string
 	typescriptDefsFilename string
 	Verbose                bool `json:"-"`
+	CrossCompile           bool
+	Platform               string
+	Architecture           string
+	LdFlags                string
 }
 
 // Defaults sets the default project template
@@ -333,11 +336,6 @@ func processBinaryName(po *ProjectOptions) {
 	if po.BinaryName == "" {
 		var binaryNameComputed = computeBinaryName(po.Name)
 		po.BinaryName = Prompt("The output binary name", binaryNameComputed)
-		if runtime.GOOS == "windows" {
-			if !strings.HasSuffix(po.BinaryName, ".exe") {
-				po.BinaryName += ".exe"
-			}
-		}
 	}
 	fmt.Println("Output binary Name: " + po.BinaryName)
 }

cmd/system.go

@@ -5,12 +5,11 @@ import (
 	"fmt"
 	"io/ioutil"
 	"log"
+	"os"
 	"path/filepath"
 	"runtime"
 	"strconv"
 	"time"
-
-	homedir "github.com/mitchellh/go-homedir"
 )
 
 // SystemHelper - Defines everything related to the system
@@ -38,10 +37,11 @@ func NewSystemHelper() *SystemHelper {
 // setSystemDirs calculates the system directories it is interested in
 func (s *SystemHelper) setSystemDirs() {
 	var err error
-	s.homeDir, err = homedir.Dir()
+	s.homeDir, err = os.UserHomeDir()
 	if err != nil {
 		log.Fatal("Cannot find home directory! Please file a bug report!")
 	}
+
 	// TODO: A better config system
 	s.wailsSystemDir = filepath.Join(s.homeDir, ".wails")
 	s.wailsSystemConfig = filepath.Join(s.wailsSystemDir, s.configFilename)
@@ -132,7 +132,7 @@ func (s *SystemHelper) setup() error {
 }
 
 const introText = `
-Wails is a lightweight framework for creating web-like desktop apps in Go. 
+Wails is a lightweight framework for creating web-like desktop apps in Go.
 I'll need to ask you a few questions so I can fill in your project templates and then I will try and see if you have the correct dependencies installed. If you don't have the right tools installed, I'll try and suggest how to install them.
 `
 
@@ -274,16 +274,18 @@ func CheckDependencies(logger *Logger) (bool, error) {
 		distroInfo := GetLinuxDistroInfo()
 
 		switch distroInfo.Distribution {
-		case Ubuntu, Debian, Zorin, Parrot, Linuxmint, Elementary, Kali, Neon, Deepin, Raspbian:
+		case Ubuntu, Debian, Zorin, Parrot, Linuxmint, Elementary, Kali, Neon, Deepin, Raspbian, PopOS:
 			libraryChecker = DpkgInstalled
-		case Arch, ArcoLinux, Manjaro, ManjaroARM:
+		case Arch, ArcoLinux, ArchLabs, Manjaro, ManjaroARM:
 			libraryChecker = PacmanInstalled
-		case CentOS, Fedora:
+		case CentOS, Fedora, Tumbleweed, Leap:
 			libraryChecker = RpmInstalled
 		case Gentoo:
 			libraryChecker = EqueryInstalled
 		case VoidLinux:
 			libraryChecker = XbpsInstalled
+		case Solus:
+			libraryChecker = EOpkgInstalled
 		default:
 			return false, RequestSupportForDistribution(distroInfo)
 		}

cmd/templates/create-react-app/frontend/package.json.template

@@ -5,8 +5,8 @@
   "private": true,
   "dependencies": {
     "core-js": "^3.6.4",
-    "react": "^16.13.0",
-    "react-dom": "^16.13.0",
+    "react": "^16.13.1",
+    "react-dom": "^16.13.1",
     "wails-react-scripts": "3.0.1-2",
     "react-modal": "3.11.2",
     "@wailsapp/runtime": "^1.0.10"

cmd/templates/create-react-app/frontend/public/index.html

@@ -1,10 +1,13 @@
 <!DOCTYPE html>
 <html lang="en">
-  <head>
+
+<head>
     <meta charset="utf-8" />
-    <link rel="shortcut icon" href="%PUBLIC_URL%/favicon.ico" />
+    <link rel="icon" href="%PUBLIC_URL%/favicon.ico" />
     <meta name="viewport" content="width=device-width, initial-scale=1" />
     <meta name="theme-color" content="#000000" />
+    <meta name="description" content="Web site created using create-react-app" />
+    <link rel="apple-touch-icon" href="%PUBLIC_URL%/logo192.png" />
     <!--
       manifest.json provides metadata used when your web app is installed on a
       user's mobile device or desktop. See https://developers.google.com/web/fundamentals/web-app-manifest/
@@ -20,8 +23,9 @@
       Learn how to configure a non-root public URL by running `npm run build`.
     -->
     <title>React App</title>
-  </head>
-  <body>
+</head>
+
+<body>
     <noscript>You need to enable JavaScript to run this app.</noscript>
     <div id="app"></div>
     <!--
@@ -34,5 +38,6 @@
       To begin the development, run `npm start` or `yarn start`.
       To create a production bundle, use `npm run build` or `yarn build`.
     -->
-  </body>
-</html>
+</body>
+
+</html>

cmd/templates/create-react-app/frontend/public/manifest.json

@@ -6,6 +6,16 @@
       "src": "favicon.ico",
       "sizes": "64x64 32x32 24x24 16x16",
       "type": "image/x-icon"
+    },
+    {
+      "src": "logo192.png",
+      "type": "image/png",
+      "sizes": "192x192"
+    },
+    {
+      "src": "logo512.png",
+      "type": "image/png",
+      "sizes": "512x512"
     }
   ],
   "start_url": ".",

cmd/templates/create-react-app/frontend/public/robots.txt

@@ -0,0 +1,3 @@
+# https://www.robotstxt.org/robotstxt.html
+User-agent: *
+Disallow:

cmd/templates/create-react-app/frontend/src/App.css

@@ -3,11 +3,16 @@
 }
 
 .App-logo {
-  animation: App-logo-spin infinite 20s linear;
   height: 40vmin;
   pointer-events: none;
 }
 
+@media (prefers-reduced-motion: no-preference) {
+  .App-logo {
+    animation: App-logo-spin infinite 20s linear;
+  }
+}
+
 .App-header {
   background-color: #282c34;
   min-height: 100vh;

cmd/templates/create-react-app/frontend/src/components/HelloWorld.js

@@ -1,48 +1,35 @@
-import React from 'react';
+import React, { useState } from 'react';
 import Modal from 'react-modal';
 
-class HelloWorld extends React.Component {
-  constructor(props, context) {
-    super();
-    this.state = {
-      showModal: false
-    };
+function HelloWorld() {
+	const [showModal, setShowModal] = useState(false);
+	const [result, setResult] = useState(null);
 
-    this.handleOpenModal = this.handleOpenModal.bind(this);
-    this.handleCloseModal = this.handleCloseModal.bind(this);
-  }
+	const handleOpenModal = () => {
+		setShowModal(true);
 
-  handleOpenModal () {
-    this.setState({ showModal: true });
+		window.backend.basic().then((result) => setResult(result));
+	};
 
-    window.backend.basic().then(result =>
-      this.setState({
-        result
-      })
-    );
-  }
+	const handleCloseModal = () => {
+		setShowModal(false);
+	};
 
-  handleCloseModal () {
-    this.setState({ showModal: false });
-  }
-
-  render() {
-    const { result } = this.state;
-    return (
-      <div className="App">
-        <button onClick={this.handleOpenModal} type="button">
-          Hello
-        </button>
-        <Modal
-          isOpen={this.state.showModal}
-          contentLabel="Minimal Modal Example"
-        >
-        <p>{result}</p>
-        <button onClick={this.handleCloseModal}>Close Modal</button>
-        </Modal>
-      </div>
-    );
-  }
+	return (
+		<div className="App">
+			<button onClick={() => handleOpenModal()} type="button">
+				Hello
+      </button>
+			<Modal
+				appElement={document.getElementById("app")}
+				isOpen={showModal}
+				contentLabel="Minimal Modal Example"
+			>
+				<p>{result}</p>
+				<button onClick={() => handleCloseModal()}>Close Modal</button>
+			</Modal>
+		</div>
+	);
 }
 
 export default HelloWorld;

cmd/templates/create-react-app/frontend/src/index.js

@@ -3,9 +3,20 @@ import ReactDOM from 'react-dom';
 import 'core-js/stable';
 import './index.css';
 import App from './App';
+import * as serviceWorker from './serviceWorker';
 
 import * as Wails from '@wailsapp/runtime';
 
 Wails.Init(() => {
-  ReactDOM.render(<App />, document.getElementById('app'));
+  ReactDOM.render(
+    <React.StrictMode>
+      <App />
+    </React.StrictMode>,
+    document.getElementById("app")
+  );
 });
+
+// If you want your app to work offline and load faster, you can change
+// unregister() to register() below. Note this comes with some pitfalls.
+// Learn more about service workers: https://bit.ly/CRA-PWA
+serviceWorker.unregister();

cmd/templates/create-react-app/template.json

@@ -1,8 +1,8 @@
 {
   "name": "React JS",
   "version": "1.0.0",
-  "shortdescription": "Create React App v3 template",
-  "description": "Create React App v3 standar tooling",
+  "shortdescription": "Create React App v4 template",
+  "description": "Create React App v4 standard tooling",
   "install": "npm install",
   "build": "npm run build",
   "author": "bh90210 <ktc@pm.me>",

cmd/templates/vanilla/README.md

@@ -0,0 +1,5 @@
+# README
+
+This is an experimental template for vanilla HTML/JS/CSS.
+
+The webpack rules may need to be adjusted to correctly embed all assets. Babel may also need to be setup correctly.

cmd/templates/vanilla/frontend/package.json.template

@@ -0,0 +1,42 @@
+{
+  "name": "vanilla",
+  "author": "Lea<l>",
+  "private": true,
+  "scripts": {
+    "serve": "webpack-dev-server",
+    "build": "npx webpack"
+  },
+  "dependencies": {
+    "core-js": "^3.6.4",
+    "regenerator-runtime": "^0.13.3",
+    "@wailsapp/runtime": "^1.0.10"
+  },
+  "devDependencies": {
+    "babel-eslint": "^10.1.0",
+    "copy-webpack-plugin": "^6.0.2",
+    "eslint": "^6.8.0",
+    "eventsource-polyfill": "^0.9.6",
+    "webpack": "^4.43.0",
+    "webpack-cli": "^3.3.11",
+    "webpack-dev-server": "^3.11.0",
+    "webpack-hot-middleware": "^2.25.0"
+  },
+  "eslintConfig": {
+    "root": true,
+    "env": {
+      "node": true
+    },
+    "extends": [
+      "eslint:recommended"
+    ],
+    "rules": {},
+    "parserOptions": {
+      "parser": "babel-eslint"
+    }
+  },
+  "browserslist": [
+    "> 1%",
+    "last 2 versions",
+    "not ie <= 8"
+  ]
+}

cmd/templates/vanilla/frontend/src/index.html

@@ -0,0 +1,9 @@
+<html>
+    <head>
+        <link rel="stylesheet" type="text/css" href="main.css">
+    </head>
+    <body>
+        <div id="app"></div>
+        <script src="main.js"></script>
+    </body>
+</html>

cmd/templates/vanilla/frontend/src/main.js

@@ -0,0 +1,30 @@
+import 'core-js/stable';
+const runtime = require('@wailsapp/runtime');
+
+// Main entry point
+function start() {
+
+	// Ensure the default app div is 100% wide/high
+	var app = document.getElementById('app');
+	app.style.width = '100%';
+	app.style.height = '100%';
+
+	// Inject html
+	app.innerHTML = `
+	<div class='logo'></div>
+	<div class='container'>
+			<button id='button'>Click Me!</button>
+			<div id='result'/>
+	</div>
+	`;
+
+	// Connect button to Go method
+	document.getElementById('button').onclick = function() {
+		window.backend.basic().then( function(result) {
+			document.getElementById('result').innerText = result;
+		});
+	};
+};
+
+// We provide our entrypoint as a callback for runtime.Init
+runtime.Init(start);

cmd/templates/vanilla/frontend/webpack.config.js

@@ -0,0 +1,56 @@
+const path = require('path');
+const CopyWebpackPlugin = require('copy-webpack-plugin');
+
+let imageSizeLimit = 9007199254740991; // Number.MAX_SAFE_INTEGER
+let sourceDir = path.resolve(__dirname, 'src');
+let buildDir = path.resolve(__dirname, 'build');
+
+module.exports = {
+	entry: {
+		index: path.resolve(sourceDir, 'main.js')
+	},
+	output: {
+		path: buildDir,
+		filename: 'main.js'
+	},
+	optimization: {
+		splitChunks: false
+	},
+	devServer: {
+		disableHostCheck: true,
+		contentBase: path.join(__dirname, 'src'),
+		compress: true,
+		open: true,
+		port: 8090
+	},
+	mode: 'production',
+	module: {
+		rules: [
+			{
+				test: /\.(png|gif|jpg|woff2?|eot|ttf|otf|svg)(\?.*)?$/i,
+				use: [
+					{
+						loader: 'url-loader',
+						options: {
+							limit: imageSizeLimit
+						}
+					}
+				],
+			}
+		]
+	},
+	plugins: [
+		new CopyWebpackPlugin({
+			patterns: [
+				{
+					from: path.resolve(sourceDir, 'main.css'),
+					to: path.resolve(buildDir, 'main.css')
+				},
+				{
+					from: path.resolve(sourceDir, 'index.html'),
+					to: path.resolve(buildDir, 'index.html')
+				},
+			]
+		})
+	]
+};

cmd/templates/vanilla/go.mod.template

@@ -0,0 +1,5 @@
+module {{.BinaryName}}
+
+require (
+	github.com/wailsapp/wails {{.WailsVersion}}
+)

cmd/templates/vanilla/main.go.template

@@ -0,0 +1,27 @@
+package main
+
+import (
+  "github.com/leaanthony/mewn"
+  "github.com/wailsapp/wails"
+)
+
+func basic() string {
+  return "Hello World!"
+}
+
+func main() {
+
+	js := mewn.String("./frontend/build/main.js")
+	css := mewn.String("./frontend/build/main.css")
+
+  app := wails.CreateApp(&wails.AppConfig{
+    Width:  1024,
+    Height: 768,
+    Title:  "{{.Name}}",
+    JS:     js,
+    CSS:    css,
+    Colour: "#131313",
+  })
+  app.Bind(basic)
+  app.Run()
+}

cmd/templates/vanilla/template.json

@@ -0,0 +1,12 @@
+{
+  "name": "Vanilla",
+  "shortdescription": "A Vanilla HTML/JS template",
+  "description": "A basic template using plain html/js and bundled using Webpack 4",
+  "author": "Lea Anthony<lea.anthony@gmail.com>",
+  "created": "2020-06-14",
+  "frontenddir": "frontend",
+  "install": "npm install",
+  "build": "npm run build",
+  "serve": "npm run serve",
+  "bridge": "src"
+}

cmd/version.go

@@ -1,4 +1,4 @@
 package cmd
 
 // Version - Wails version
-const Version = "v1.0.3-pre2"
+const Version = "v1.7.2-pre3"

cmd/wails/4_build.go

@@ -3,11 +3,24 @@ package main
 import (
 	"fmt"
 	"os"
+	"runtime"
+	"strings"
 
 	"github.com/leaanthony/spinner"
 	"github.com/wailsapp/wails/cmd"
 )
 
+// getSupportedPlatforms returns a slice of platform/architecture
+// targets that are buildable using the cross-platform 'x' option.
+func getSupportedPlatforms() []string {
+	return []string{
+		"darwin/amd64",
+		"linux/amd64",
+		"linux/arm-7",
+		"windows/amd64",
+	}
+}
+
 func init() {
 
 	var packageApp = false
@@ -15,6 +28,8 @@ func init() {
 	var debugMode = false
 	var typescriptFilename = ""
 	var verbose = false
+	var platform = ""
+	var ldflags = ""
 
 	buildSpinner := spinner.NewSpinner()
 	buildSpinner.SetSpinSpeed(50)
@@ -26,7 +41,16 @@ func init() {
 		BoolFlag("f", "Force rebuild of application components", &forceRebuild).
 		BoolFlag("d", "Build in Debug mode", &debugMode).
 		BoolFlag("verbose", "Verbose output", &verbose).
-		StringFlag("t", "Generate Typescript definitions to given file (at runtime)", &typescriptFilename)
+		StringFlag("t", "Generate Typescript definitions to given file (at runtime)", &typescriptFilename).
+		StringFlag("ldflags", "Extra options for -ldflags", &ldflags)
+
+	var b strings.Builder
+	for _, plat := range getSupportedPlatforms() {
+		fmt.Fprintf(&b, " - %s\n", plat)
+	}
+	initCmd.StringFlag("x",
+		fmt.Sprintf("Cross-compile application to specified platform via xgo\n%s", b.String()),
+		&platform)
 
 	initCmd.Action(func() error {
 
@@ -52,6 +76,28 @@ func init() {
 			return fmt.Errorf("Unable to find 'project.json'. Please check you are in a Wails project directory")
 		}
 
+		// Set cross-compile
+		projectOptions.Platform = runtime.GOOS
+		if len(platform) > 0 {
+			supported := false
+			for _, plat := range getSupportedPlatforms() {
+				if plat == platform {
+					supported = true
+				}
+			}
+			if !supported {
+				return fmt.Errorf("unsupported platform '%s' specified.\nPlease run `wails build -h` to see the supported platform/architecture options", platform)
+			}
+
+			projectOptions.CrossCompile = true
+			plat := strings.Split(platform, "/")
+			projectOptions.Platform = plat[0]
+			projectOptions.Architecture = plat[1]
+		}
+
+		// Add ldflags
+		projectOptions.LdFlags = ldflags
+
 		// Validate config
 		// Check if we have a frontend
 		err = cmd.ValidateFrontendConfig(projectOptions)

cmd/wails/6_serve.go

@@ -2,6 +2,7 @@ package main
 
 import (
 	"fmt"
+	"runtime"
 
 	"github.com/leaanthony/spinner"
 	"github.com/wailsapp/wails/cmd"
@@ -34,7 +35,6 @@ func init() {
 
 		// Project options
 		projectOptions := &cmd.ProjectOptions{}
-		projectOptions.Verbose = verbose
 
 		// Check we are in project directory
 		// Check project.json loads correctly
@@ -44,6 +44,10 @@ func init() {
 			return err
 		}
 
+		// Set project options
+		projectOptions.Verbose = verbose
+		projectOptions.Platform = runtime.GOOS
+
 		// Save project directory
 		projectDir := fs.Cwd()
 

cmd/wails/8_update.go

@@ -3,9 +3,9 @@ package main
 import (
 	"fmt"
 	"log"
+	"os"
 
 	"github.com/leaanthony/spinner"
-	"github.com/mitchellh/go-homedir"
 	"github.com/wailsapp/wails/cmd"
 )
 
@@ -146,7 +146,7 @@ func updateToVersion(targetVersion *cmd.SemanticVersion, force bool) error {
 	updateSpinner.Start("Installing Wails " + desiredVersion)
 
 	// Run command in non module directory
-	homeDir, err := homedir.Dir()
+	homeDir, err := os.UserHomeDir()
 	if err != nil {
 		log.Fatal("Cannot find home directory! Please file a bug report!")
 	}

go.mod

@@ -14,19 +14,18 @@ require (
 	github.com/leaanthony/spinner v0.5.3
 	github.com/mattn/go-colorable v0.1.1 // indirect
 	github.com/mattn/go-isatty v0.0.7 // indirect
-	github.com/mitchellh/go-homedir v1.1.0
 	github.com/nfnt/resize v0.0.0-20180221191011-83c6a9932646 // indirect
 	github.com/pkg/browser v0.0.0-20180916011732-0a3d74bf9ce4
 	github.com/pkg/errors v0.8.1 // indirect
 	github.com/sirupsen/logrus v1.4.1
 	github.com/stretchr/testify v1.3.0 // indirect
 	github.com/syossan27/tebata v0.0.0-20180602121909-b283fe4bc5ba
-	golang.org/x/crypto v0.0.0-20190510104115-cbcb75029529 // indirect
-	golang.org/x/net v0.0.0-20190509222800-a4d6f7feada5 // indirect
-	golang.org/x/sys v0.0.0-20190509141414-a5b02f93d862
+	golang.org/x/image v0.0.0-20200430140353-33d19683fad8
+	golang.org/x/net v0.0.0-20200625001655-4c5254603344 // indirect
+	golang.org/x/sys v0.0.0-20200724161237-0e2f3a69832c
 	golang.org/x/text v0.3.0
 	gopkg.in/AlecAivazis/survey.v1 v1.8.4
 	gopkg.in/yaml.v3 v3.0.0-20190709130402-674ba3eaed22
 )
 
-go 1.12
+go 1.13

go.sum

@@ -46,8 +46,6 @@ github.com/mattn/go-isatty v0.0.7 h1:UvyT9uN+3r7yLEYSlJsbQGdsaB/a0DlgWP3pql6iwOc
 github.com/mattn/go-isatty v0.0.7/go.mod h1:Iq45c/XA43vh69/j3iqttzPXn0bhXyGjM0Hdxcsrc5s=
 github.com/mgutz/ansi v0.0.0-20170206155736-9520e82c474b h1:j7+1HpAFS1zy5+Q4qx1fWh90gTKwiN4QCGoY9TWyyO4=
 github.com/mgutz/ansi v0.0.0-20170206155736-9520e82c474b/go.mod h1:01TrycV0kFyexm33Z7vhZRXopbI8J3TDReVlkTgMUxE=
-github.com/mitchellh/go-homedir v1.1.0 h1:lukF9ziXFxDFPkA1vsr5zpc1XuPDn/wFntq5mG+4E0Y=
-github.com/mitchellh/go-homedir v1.1.0/go.mod h1:SfyaCUpYCn1Vlf4IUYiD9fPX4A5wJrkLzIz1N1q0pr0=
 github.com/nfnt/resize v0.0.0-20180221191011-83c6a9932646 h1:zYyBkD/k9seD2A7fsi6Oo2LfFZAehjjQMERAvZLEDnQ=
 github.com/nfnt/resize v0.0.0-20180221191011-83c6a9932646/go.mod h1:jpp1/29i3P1S/RLdc7JQKbRpFeM1dOBd8T9ki5s+AY8=
 github.com/pkg/browser v0.0.0-20180916011732-0a3d74bf9ce4 h1:49lOXmGaUpV9Fz3gd7TFZY106KVlPVa5jcYD1gaQf98=
@@ -68,19 +66,23 @@ github.com/syossan27/tebata v0.0.0-20180602121909-b283fe4bc5ba h1:2DHfQOxcpWdGf5
 github.com/syossan27/tebata v0.0.0-20180602121909-b283fe4bc5ba/go.mod h1:iLnlXG2Pakcii2CU0cbY07DRCSvpWNa7nFxtevhOChk=
 golang.org/x/crypto v0.0.0-20190123085648-057139ce5d2b/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4=
 golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
-golang.org/x/crypto v0.0.0-20190510104115-cbcb75029529 h1:iMGN4xG0cnqj3t+zOM8wUB0BiPKHEwSxEZCvzcbZuvk=
-golang.org/x/crypto v0.0.0-20190510104115-cbcb75029529/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
+golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9 h1:psW17arqaxU48Z5kZ0CQnkZWQJsqcURM6tKiBApRjXI=
+golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
+golang.org/x/image v0.0.0-20200430140353-33d19683fad8 h1:6WW6V3x1P/jokJBpRQYUJnMHRP6isStQwCozxnU7XQw=
+golang.org/x/image v0.0.0-20200430140353-33d19683fad8/go.mod h1:FeLwcggjj3mMvU+oOTbSwawSJRM1uh48EjtB4UJZlP0=
 golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
-golang.org/x/net v0.0.0-20190509222800-a4d6f7feada5 h1:6M3SDHlHHDCx2PcQw3S4KsR170vGqDhJDOmpVd4Hjak=
-golang.org/x/net v0.0.0-20190509222800-a4d6f7feada5/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
+golang.org/x/net v0.0.0-20200625001655-4c5254603344 h1:vGXIOMxbNfDTk/aXCmfdLgkrSV+Z2tcbze+pEc3v5W4=
+golang.org/x/net v0.0.0-20200625001655-4c5254603344/go.mod h1:/O7V0waA8r7cgGh81Ro3o1hOxt32SMVPicZroKQ2sZA=
 golang.org/x/sys v0.0.0-20180606202747-9527bec2660b/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20180905080454-ebe1bf3edb33/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20181228144115-9a3f9b0469bb/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20190222072716-a9d3bda3a223/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20190412213103-97732733099d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20190509141414-a5b02f93d862 h1:rM0ROo5vb9AdYJi1110yjWGMej9ITfKddS89P3Fkhug=
-golang.org/x/sys v0.0.0-20190509141414-a5b02f93d862/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20200323222414-85ca7c5b95cd h1:xhmwyvizuTgC2qz7ZlMluP20uW+C3Rm0FD/WLDX8884=
+golang.org/x/sys v0.0.0-20200323222414-85ca7c5b95cd/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20200724161237-0e2f3a69832c h1:UIcGWL6/wpCfyGuJnRFJRurA+yj8RrW7Q6x2YMCXt6c=
+golang.org/x/sys v0.0.0-20200724161237-0e2f3a69832c/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/text v0.3.0 h1:g61tztE5qeGQ89tm6NTjjM9VPIm088od1l6aSorWRWg=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 gopkg.in/AlecAivazis/survey.v1 v1.8.4 h1:10xXXN3wgIhPheb5NI58zFgZv32Ana7P3Tl4shW+0Qc=

lib/interfaces/renderer.go

@@ -17,9 +17,9 @@ type Renderer interface {
 	NotifyEvent(eventData *messages.EventData) error
 
 	// Dialog Runtime
-	SelectFile() string
+	SelectFile(title string, filter string) string
 	SelectDirectory() string
-	SelectSaveFile() string
+	SelectSaveFile(title string, filter string) string
 
 	// Window Runtime
 	SetColour(string) error

lib/renderer/bridge/bridge.go

@@ -42,12 +42,12 @@ type Bridge struct {
 	server *http.Server
 
 	lock     sync.Mutex
-	sessions map[string]session
+	sessions map[string]*session
 }
 
 // Initialise the Bridge Renderer
 func (h *Bridge) Initialise(appConfig interfaces.AppConfig, ipcManager interfaces.IPCManager, eventManager interfaces.EventManager) error {
-	h.sessions = map[string]session{}
+	h.sessions = map[string]*session{}
 	h.ipcManager = ipcManager
 	h.appConfig = appConfig
 	h.eventManager = eventManager
@@ -70,13 +70,11 @@ func (h *Bridge) wsBridgeHandler(w http.ResponseWriter, r *http.Request) {
 }
 
 func (h *Bridge) startSession(conn *websocket.Conn) {
-	s := session{
-		conn:         conn,
-		bindingCache: h.bindingCache,
-		ipc:          h.ipcManager,
-		log:          h.log,
-		eventManager: h.eventManager,
-	}
+	s := newSession(conn,
+		h.bindingCache,
+		h.ipcManager,
+		logger.NewCustomLogger("BridgeSession"),
+		h.eventManager)
 
 	conn.SetCloseHandler(func(int, string) error {
 		h.log.Infof("Connection dropped [%s].", s.Identifier())
@@ -116,7 +114,7 @@ func (h *Bridge) NewBinding(methodName string) error {
 
 // SelectFile is unsupported for Bridge but required
 // for the Renderer interface
-func (h *Bridge) SelectFile() string {
+func (h *Bridge) SelectFile(title string, filter string) string {
 	h.log.Warn("SelectFile() unsupported in bridge mode")
 	return ""
 }
@@ -130,7 +128,7 @@ func (h *Bridge) SelectDirectory() string {
 
 // SelectSaveFile is unsupported for Bridge but required
 // for the Renderer interface
-func (h *Bridge) SelectSaveFile() string {
+func (h *Bridge) SelectSaveFile(title string, filter string) string {
 	h.log.Warn("SelectSaveFile() unsupported in bridge mode")
 	return ""
 }
@@ -154,13 +152,20 @@ func (h *Bridge) NotifyEvent(event *messages.EventData) error {
 		// Marshall the data
 		data, err = json.Marshal(event.Data)
 		if err != nil {
-			h.log.Errorf("Cannot unmarshall JSON data in event: %s ", err.Error())
+			h.log.Errorf("Cannot marshal JSON data in event: %s ", err.Error())
 			return err
 		}
 	}
 
-	message := fmt.Sprintf("window.wails._.Notify('%s','%s')", event.Name, data)
-	dead := []session{}
+	// Double encode data to ensure everything is escaped correctly.
+	data, err = json.Marshal(string(data))
+	if err != nil {
+		h.log.Errorf("Cannot marshal JSON data in event: %s ", err.Error())
+		return err
+	}
+
+	message := "window.wails._.Notify('" + event.Name + "'," + string(data) + ")"
+	dead := []*session{}
 	for _, session := range h.sessions {
 		err := session.evalJS(message, notifyMessage)
 		if err != nil {
@@ -207,6 +212,9 @@ func (h *Bridge) SetTitle(title string) {
 // for the Renderer interface
 func (h *Bridge) Close() {
 	h.log.Debug("Shutting down")
+	for _, session := range h.sessions {
+		session.Shutdown()
+	}
 	err := h.server.Close()
 	if err != nil {
 		h.log.Errorf(err.Error())

lib/renderer/bridge/renderer-mewn.go

@@ -0,0 +1,9 @@
+package renderer
+
+// Autogenerated by Mewn - Do not alter
+
+import "github.com/leaanthony/mewn"
+
+func init() {
+  mewn.AddAsset(".", "../../runtime/assets/wails.js", "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")
+}

lib/renderer/bridge/session.go

@@ -1,7 +1,8 @@
 package renderer
 
 import (
-	"sync"
+	"time"
+	"unsafe"
 
 	"github.com/gorilla/websocket"
 	"github.com/leaanthony/mewn"
@@ -20,7 +21,22 @@ type session struct {
 	ipc          interfaces.IPCManager
 
 	// Mutex for writing to the socket
-	lock sync.Mutex
+	shutdown  chan bool
+	writeChan chan []byte
+
+	done bool
+}
+
+func newSession(conn *websocket.Conn, bindingCache []string, ipc interfaces.IPCManager, logger *logger.CustomLogger, eventMgr interfaces.EventManager) *session {
+	return &session{
+		conn:         conn,
+		bindingCache: bindingCache,
+		ipc:          ipc,
+		log:          logger,
+		eventManager: eventMgr,
+		shutdown:     make(chan bool),
+		writeChan:    make(chan []byte, 100),
+	}
 }
 
 // Identifier returns a string identifier for the remote connection.
@@ -33,19 +49,15 @@ func (s *session) Identifier() string {
 }
 
 func (s *session) sendMessage(msg string) error {
-	s.lock.Lock()
-	defer s.lock.Unlock()
-
-	if err := s.conn.WriteMessage(websocket.TextMessage, []byte(msg)); err != nil {
-		s.log.Debug(err.Error())
-		return err
+	if !s.done {
+		s.writeChan <- *(*[]byte)(unsafe.Pointer(&msg))
 	}
-
 	return nil
 }
 
 func (s *session) start(firstSession bool) {
 	s.log.Infof("Connected to frontend.")
+	go s.writePump()
 
 	wailsRuntime := mewn.String("../../runtime/assets/wails.js")
 	s.evalJS(wailsRuntime, wailsRuntimeMessage)
@@ -74,6 +86,10 @@ func (s *session) start(firstSession bool) {
 		s.log.Debugf("Got message: %#v\n", string(buffer))
 
 		s.ipc.Dispatch(string(buffer), s.Callback)
+
+		if s.done {
+			break
+		}
 	}
 }
 
@@ -83,8 +99,38 @@ func (s *session) Callback(data string) error {
 }
 
 func (s *session) evalJS(js string, mtype messageType) error {
-
 	// Prepend message type to message
 	return s.sendMessage(mtype.toString() + js)
-
+}
+
+// Shutdown
+func (s *session) Shutdown() {
+	s.done = true
+	s.shutdown <- true
+	s.log.Debugf("session %v exit", s.Identifier())
+}
+
+// writePump pulls messages from the writeChan and sends them to the client
+// since it uses a channel to read the messages the socket is protected without locks
+func (s *session) writePump() {
+	s.log.Debugf("Session %v - writePump start", s.Identifier())
+	for {
+		select {
+		case msg, ok := <-s.writeChan:
+			s.conn.SetWriteDeadline(time.Now().Add(1 * time.Second))
+			if !ok {
+				s.log.Debug("writeChan was closed!")
+				s.conn.WriteMessage(websocket.CloseMessage, []byte{})
+				return
+			}
+
+			if err := s.conn.WriteMessage(websocket.TextMessage, msg); err != nil {
+				s.log.Debug(err.Error())
+				return
+			}
+		case <-s.shutdown:
+			break
+		}
+	}
+	s.log.Debug("writePump exiting...")
 }

lib/renderer/webview.go

@@ -245,7 +245,7 @@ func (w *WebView) NewBinding(methodName string) error {
 }
 
 // SelectFile opens a dialog that allows the user to select a file
-func (w *WebView) SelectFile() string {
+func (w *WebView) SelectFile(title string, filter string) string {
 	var result string
 
 	// We need to run this on the main thread, however Dispatch is
@@ -255,7 +255,7 @@ func (w *WebView) SelectFile() string {
 	wg.Add(1)
 	go func() {
 		w.window.Dispatch(func() {
-			result = w.window.Dialog(wv.DialogTypeOpen, 0, "Select File", "")
+			result = w.window.Dialog(wv.DialogTypeOpen, 0, title, "", filter)
 			wg.Done()
 		})
 	}()
@@ -273,7 +273,7 @@ func (w *WebView) SelectDirectory() string {
 	wg.Add(1)
 	go func() {
 		w.window.Dispatch(func() {
-			result = w.window.Dialog(wv.DialogTypeOpen, wv.DialogFlagDirectory, "Select Directory", "")
+			result = w.window.Dialog(wv.DialogTypeOpen, wv.DialogFlagDirectory, "Select Directory", "", "")
 			wg.Done()
 		})
 	}()
@@ -282,7 +282,7 @@ func (w *WebView) SelectDirectory() string {
 }
 
 // SelectSaveFile opens a dialog that allows the user to select a file to save
-func (w *WebView) SelectSaveFile() string {
+func (w *WebView) SelectSaveFile(title string, filter string) string {
 	var result string
 	// We need to run this on the main thread, however Dispatch is
 	// non-blocking so we launch this in a goroutine and wait for
@@ -291,7 +291,7 @@ func (w *WebView) SelectSaveFile() string {
 	wg.Add(1)
 	go func() {
 		w.window.Dispatch(func() {
-			result = w.window.Dialog(wv.DialogTypeSave, 0, "Save file", "")
+			result = w.window.Dialog(wv.DialogTypeSave, 0, title, "", filter)
 			wg.Done()
 		})
 	}()
@@ -329,7 +329,14 @@ func (w *WebView) NotifyEvent(event *messages.EventData) error {
 		}
 	}
 
-	message := fmt.Sprintf("wails._.Notify('%s','%s')", event.Name, data)
+	// Double encode data to ensure everything is escaped correctly.
+	data, err = json.Marshal(string(data))
+	if err != nil {
+		w.log.Errorf("Cannot marshal JSON data in event: %s ", err.Error())
+		return err
+	}
+
+	message := "window.wails._.Notify('" + event.Name + "'," + string(data) + ")"
 	return w.evalJS(message)
 }
 

lib/renderer/webview/webview.go

@@ -74,9 +74,9 @@ static inline void CgoWebViewSetColor(void *w, uint8_t r, uint8_t g, uint8_t b,
 }
 
 static inline void CgoDialog(void *w, int dlgtype, int flags,
-		char *title, char *arg, char *res, size_t ressz) {
+char *title, char *arg, char *res, size_t ressz, char *filter) {
 	webview_dialog(w, dlgtype, flags,
-		(const char*)title, (const char*) arg, res, ressz);
+	(const char*)title, (const char*) arg, res, ressz, filter);
 }
 
 static inline int CgoWebViewEval(void *w, char *js) {
@@ -186,7 +186,7 @@ type WebView interface {
 	// Dialog() opens a system dialog of the given type and title. String
 	// argument can be provided for certain dialogs, such as alert boxes. For
 	// alert boxes argument is a message inside the dialog box.
-	Dialog(dlgType DialogType, flags int, title string, arg string) string
+	Dialog(dlgType DialogType, flags int, title string, arg string, filter string) string
 	// Terminate() breaks the main UI loop. This method must be called from the main thread
 	// only. See Dispatch() for more details.
 	Terminate()
@@ -311,7 +311,7 @@ func (w *webview) SetFullscreen(fullscreen bool) {
 	C.CgoWebViewSetFullscreen(w.w, C.int(boolToInt(fullscreen)))
 }
 
-func (w *webview) Dialog(dlgType DialogType, flags int, title string, arg string) string {
+func (w *webview) Dialog(dlgType DialogType, flags int, title string, arg string, filter string) string {
 	const maxPath = 4096
 	titlePtr := C.CString(title)
 	defer C.free(unsafe.Pointer(titlePtr))
@@ -319,8 +319,10 @@ func (w *webview) Dialog(dlgType DialogType, flags int, title string, arg string
 	defer C.free(unsafe.Pointer(argPtr))
 	resultPtr := (*C.char)(C.calloc((C.size_t)(unsafe.Sizeof((*C.char)(nil))), (C.size_t)(maxPath)))
 	defer C.free(unsafe.Pointer(resultPtr))
+	filterPtr := C.CString(filter)
+	defer C.free(unsafe.Pointer(filterPtr))
 	C.CgoDialog(w.w, C.int(dlgType), C.int(flags), titlePtr,
-		argPtr, resultPtr, C.size_t(maxPath))
+		argPtr, resultPtr, C.size_t(maxPath), filterPtr)
 	return C.GoString(resultPtr)
 }
 

lib/renderer/webview/webview.h

@@ -139,7 +139,7 @@ struct webview_priv
 #define DEFAULT_URL                                                            \
   "data:text/"                                                                 \
   "html,%3C%21DOCTYPE%20html%3E%0A%3Chtml%20lang=%22en%22%3E%0A%3Chead%3E%"    \
-  "3Cmeta%20charset=%22utf-8%22%3E%3Cmeta%20http-equiv=%22IE=edge%22%" \
+  "3Cmeta%20charset=%22utf-8%22%3E%3Cmeta%20http-equiv=%22IE=edge%22%"         \
   "20content=%22IE=edge%22%3E%3C%2Fhead%3E%0A%3Cbody%3E%3Cdiv%20id=%22app%22%" \
   "3E%3C%2Fdiv%3E%3Cscript%20type=%22text%2Fjavascript%22%3E%3C%2Fscript%3E%"  \
   "3C%2Fbody%3E%0A%3C%2Fhtml%3E"
@@ -174,7 +174,7 @@ struct webview_priv
   WEBVIEW_API void webview_dialog(struct webview *w,
                                   enum webview_dialog_type dlgtype, int flags,
                                   const char *title, const char *arg,
-                                  char *result, size_t resultsz);
+                                  char *result, size_t resultsz, char *filter);
   WEBVIEW_API void webview_dispatch(struct webview *w, webview_dispatch_fn fn,
                                     void *arg);
   WEBVIEW_API void webview_terminate(struct webview *w);
@@ -418,7 +418,7 @@ struct webview_priv
   WEBVIEW_API void webview_dialog(struct webview *w,
                                   enum webview_dialog_type dlgtype, int flags,
                                   const char *title, const char *arg,
-                                  char *result, size_t resultsz)
+                                  char *result, size_t resultsz, char *filter)
   {
     GtkWidget *dlg;
     if (result != NULL)
@@ -438,6 +438,17 @@ struct webview_priv
           "_Cancel", GTK_RESPONSE_CANCEL,
           (dlgtype == WEBVIEW_DIALOG_TYPE_OPEN ? "_Open" : "_Save"),
           GTK_RESPONSE_ACCEPT, NULL);
+      if (filter[0] != '\0') {
+          GtkFileFilter *file_filter = gtk_file_filter_new();
+          gchar **filters  = g_strsplit(filter, ",", -1);
+          gint i;
+          for(i = 0; filters && filters[i]; i++) {
+              gtk_file_filter_add_pattern(file_filter, filters[i]);
+          }
+          gtk_file_filter_set_name(file_filter, filter);
+          gtk_file_chooser_add_filter(GTK_FILE_CHOOSER(dlg), file_filter);
+          g_strfreev(filters);
+      }
       gtk_file_chooser_set_local_only(GTK_FILE_CHOOSER(dlg), FALSE);
       gtk_file_chooser_set_select_multiple(GTK_FILE_CHOOSER(dlg), FALSE);
       gtk_file_chooser_set_show_hidden(GTK_FILE_CHOOSER(dlg), TRUE);
@@ -1227,7 +1238,7 @@ struct webview_priv
       }
       VariantInit(&myURL);
       myURL.vt = VT_BSTR;
-// #ifndef UNICODE
+      // #ifndef UNICODE
       {
         wchar_t *buffer = webview_to_utf16(webPageName);
         if (buffer == NULL)
@@ -1237,9 +1248,9 @@ struct webview_priv
         myURL.bstrVal = SysAllocString(buffer);
         GlobalFree(buffer);
       }
-// #else
-//       myURL.bstrVal = SysAllocString(webPageName);
-// #endif
+      // #else
+      //       myURL.bstrVal = SysAllocString(webPageName);
+      // #endif
       if (!myURL.bstrVal)
       {
       badalloc:
@@ -1277,7 +1288,7 @@ struct webview_priv
             if (!SafeArrayAccessData(sfArray, (void **)&pVar))
             {
               pVar->vt = VT_BSTR;
-// #ifndef UNICODE
+              // #ifndef UNICODE
               {
                 wchar_t *buffer = webview_to_utf16(url);
                 if (buffer == NULL)
@@ -1287,9 +1298,9 @@ struct webview_priv
                 bstr = SysAllocString(buffer);
                 GlobalFree(buffer);
               }
-// #else
-//               bstr = SysAllocString(url);
-// #endif
+              // #else
+              //               bstr = SysAllocString(url);
+              // #endif
               if ((pVar->bstrVal = bstr))
               {
                 htmlDoc2->lpVtbl->write(htmlDoc2, sfArray);
@@ -1410,6 +1421,8 @@ struct webview_priv
     wc.hInstance = hInstance;
     wc.lpfnWndProc = wndproc;
     wc.lpszClassName = classname;
+    wc.hIcon = LoadIcon(hInstance, MAKEINTRESOURCE(100));
+    wc.hIconSm = LoadIcon(hInstance, MAKEINTRESOURCE(100));
     RegisterClassEx(&wc);
 
     style = WS_OVERLAPPEDWINDOW;
@@ -1444,12 +1457,12 @@ struct webview_priv
                        rect.right - rect.left, rect.bottom - rect.top,
                        HWND_DESKTOP, NULL, hInstance, (void *)w);
 #else
-  w->priv.hwnd =
+    w->priv.hwnd =
         CreateWindowEx(0, classname, w->title, style, rect.left, rect.top,
                        rect.right - rect.left, rect.bottom - rect.top,
                        HWND_DESKTOP, NULL, hInstance, (void *)w);
 #endif
-    
+
     if (w->priv.hwnd == 0)
     {
       OleUninitialize();
@@ -1466,8 +1479,7 @@ struct webview_priv
 #else
     SetWindowText(w->priv.hwnd, w->title);
 #endif
-    
-    
+
     ShowWindow(w->priv.hwnd, SW_SHOWDEFAULT);
     UpdateWindow(w->priv.hwnd);
     SetFocus(w->priv.hwnd);
@@ -1494,6 +1506,11 @@ struct webview_priv
     case WM_KEYDOWN:
     case WM_KEYUP:
     {
+      // Disable refresh when pressing F5 on windows
+      if (msg.wParam == VK_F5)
+      {
+        break;
+      }
       HRESULT r = S_OK;
       IWebBrowser2 *webBrowser2;
       IOleObject *browser = *w->priv.browser;
@@ -1603,7 +1620,7 @@ struct webview_priv
 
   WEBVIEW_API void webview_set_title(struct webview *w, const char *title)
   {
-  #ifdef UNICODE
+#ifdef UNICODE
     wchar_t *u16title = webview_to_utf16(title);
     if (u16title == NULL)
     {
@@ -1611,12 +1628,11 @@ struct webview_priv
     }
     SetWindowText(w->priv.hwnd, u16title);
     GlobalFree(u16title);
-  #else
+#else
     SetWindowText(w->priv.hwnd, title);
-  #endif
+#endif
   }
 
-
   WEBVIEW_API void webview_set_fullscreen(struct webview *w, int fullscreen)
   {
     if (w->priv.is_fullscreen == !!fullscreen)
@@ -1777,7 +1793,7 @@ struct webview_priv
   WEBVIEW_API void webview_dialog(struct webview *w,
                                   enum webview_dialog_type dlgtype, int flags,
                                   const char *title, const char *arg,
-                                  char *result, size_t resultsz)
+                                  char *result, size_t resultsz, char *filter)
   {
     if (dlgtype == WEBVIEW_DIALOG_TYPE_OPEN ||
         dlgtype == WEBVIEW_DIALOG_TYPE_SAVE)
@@ -1817,6 +1833,32 @@ struct webview_priv
                     FOS_NOTESTFILECREATE | FOS_NODEREFERENCELINKS |
                     FOS_FORCESHOWHIDDEN | FOS_DEFAULTNOMINIMODE;
       }
+      if (filter[0] != '\0')
+      {
+        int count;
+        int i=0;
+        char* token;
+        char* filter_dup = strdup(filter);
+        for (count=1; filter[count]; filter[count]==',' ? count++ : *filter++);
+        COMDLG_FILTERSPEC rgSpec[count];
+        char* filters[count];
+        token = strtok(filter_dup, ",");
+        while(token != NULL)
+        {
+          filters[i] = token;
+          token = strtok(NULL, ",");
+          i++;
+        }
+        for (int i=0; i < count; i++) {
+          wchar_t *wFilter = (wchar_t *)malloc(4096);
+          MultiByteToWideChar(CP_ACP, 0, filters[i], -1, wFilter, 4096);
+          rgSpec[i].pszName = wFilter;
+          rgSpec[i].pszSpec = wFilter;
+        }
+        if (dlg->lpVtbl->SetFileTypes(dlg, count, rgSpec) != S_OK) {
+          goto error_dlg;
+        }
+      }
       if (dlg->lpVtbl->GetOptions(dlg, &opts) != S_OK)
       {
         goto error_dlg;
@@ -1927,22 +1969,26 @@ struct webview_priv
     [script setValue:self forKey:@"external"];
   }
 
-static void webview_run_input_open_panel(id self, SEL cmd, id webview,
-                                           id listener, BOOL allowMultiple) {
+  static void webview_run_input_open_panel(id self, SEL cmd, id webview,
+                                           id listener, BOOL allowMultiple)
+  {
     char filename[256] = "";
     struct webview *w =
         (struct webview *)objc_getAssociatedObject(self, "webview");
 
     webview_dialog(w, WEBVIEW_DIALOG_TYPE_OPEN, WEBVIEW_DIALOG_FLAG_FILE, "", "",
-                   filename, 255);
-    if (strlen(filename)) {
+                   filename, 255, "");
+    filename[255] = '\0';
+    if (strlen(filename) > 0)
+    {
       [listener chooseFilename:[NSString stringWithUTF8String:filename]];
-    } else {
+    }
+    else
+    {
       [listener cancel];
     }
   }
 
-
   static void webview_external_invoke(id self, SEL cmd, id arg)
   {
     struct webview *w =
@@ -1955,7 +2001,7 @@ static void webview_run_input_open_panel(id self, SEL cmd, id webview,
     {
       return;
     }
-    w->external_invoke_cb(w, [(NSString *)(arg)UTF8String]);
+    w->external_invoke_cb(w, [(NSString *)(arg) UTF8String]);
   }
 
   WEBVIEW_API int webview_init(struct webview *w)
@@ -2194,12 +2240,16 @@ static void webview_run_input_open_panel(id self, SEL cmd, id webview,
   WEBVIEW_API void webview_dialog(struct webview *w,
                                   enum webview_dialog_type dlgtype, int flags,
                                   const char *title, const char *arg,
-                                  char *result, size_t resultsz)
+                                  char *result, size_t resultsz, char *filter)
   {
     if (dlgtype == WEBVIEW_DIALOG_TYPE_OPEN ||
         dlgtype == WEBVIEW_DIALOG_TYPE_SAVE)
     {
       NSSavePanel *panel;
+      NSString *filter_str = [NSString stringWithUTF8String:filter];
+      filter_str = [filter_str stringByReplacingOccurrencesOfString:@"*."
+                                     withString:@""];
+      NSArray *fileTypes = [filter_str componentsSeparatedByString:@","];
       if (dlgtype == WEBVIEW_DIALOG_TYPE_OPEN)
       {
         NSOpenPanel *openPanel = [NSOpenPanel openPanel];
@@ -2212,6 +2262,10 @@ static void webview_run_input_open_panel(id self, SEL cmd, id webview,
         {
           [openPanel setCanChooseFiles:YES];
           [openPanel setCanChooseDirectories:NO];
+          if(filter[0] != NULL)
+          {
+            [openPanel setAllowedFileTypes:fileTypes];
+          }
         }
         [openPanel setResolvesAliases:NO];
         [openPanel setAllowsMultipleSelection:NO];
@@ -2225,6 +2279,10 @@ static void webview_run_input_open_panel(id self, SEL cmd, id webview,
       [panel setShowsHiddenFiles:YES];
       [panel setExtensionHidden:NO];
       [panel setCanSelectHiddenExtension:NO];
+      if(filter[0] != NULL)
+      {
+        [panel setAllowedFileTypes:fileTypes];
+      }
       [panel setTreatsFilePackagesAsDirectories:YES];
       [panel beginSheetModalForWindow:w->priv.window
                     completionHandler:^(NSInteger result) {

runtime/dialog.go

@@ -1,6 +1,7 @@
 package runtime
 
 import "github.com/wailsapp/wails/lib/interfaces"
+import "strings"
 
 // Dialog exposes an interface to native dialogs
 type Dialog struct {
@@ -15,8 +16,16 @@ func NewDialog(renderer interfaces.Renderer) *Dialog {
 }
 
 // SelectFile prompts the user to select a file
-func (r *Dialog) SelectFile() string {
-	return r.renderer.SelectFile()
+func (r *Dialog) SelectFile(params ...string) string {
+	title := "Select File"
+	filter := ""
+	if len(params) > 0 {
+		title = params[0]
+	}
+	if len(params) > 1 {
+		filter = strings.Replace(params[1], " ", "", -1)
+	}
+	return r.renderer.SelectFile(title, filter)
 }
 
 // SelectDirectory prompts the user to select a directory
@@ -25,6 +34,14 @@ func (r *Dialog) SelectDirectory() string {
 }
 
 // SelectSaveFile prompts the user to select a file for saving
-func (r *Dialog) SelectSaveFile() string {
-	return r.renderer.SelectSaveFile()
+func (r *Dialog) SelectSaveFile(params ...string) string {
+	title := "Select Save"
+	filter := ""
+	if len(params) > 0 {
+		title = params[0]
+	}
+	if len(params) > 1 {
+		filter = strings.Replace(params[1], " ", "", -1)
+	}
+	return r.renderer.SelectSaveFile(title, filter)
 }

runtime/filesystem.go

@@ -1,9 +1,9 @@
 package runtime
 
-import homedir "github.com/mitchellh/go-homedir"
+import "os"
 
 // FileSystem exposes file system utilities to the runtime
-type FileSystem struct {}
+type FileSystem struct{}
 
 // NewFileSystem creates a new FileSystem struct
 func NewFileSystem() *FileSystem {
@@ -12,5 +12,5 @@ func NewFileSystem() *FileSystem {
 
 // HomeDir returns the user's home directory
 func (r *FileSystem) HomeDir() (string, error) {
-	return homedir.Dir()
+	return os.UserHomeDir()
 }

runtime/js/package.json

@@ -29,15 +29,15 @@
   },
   "homepage": "https://github.com/wailsapp/runtime#readme",
   "devDependencies": {
-    "@babel/cli": "^7.5.0",
-    "@babel/core": "^7.5.4",
-    "@babel/plugin-transform-object-assign": "^7.2.0",
-    "@babel/preset-env": "^7.5.4",
-    "babel-loader": "^8.0.6",
-    "babel-preset-minify": "^0.5.0",
-    "core-js": "^3.1.4",
-    "eslint": "^6.5.1",
-    "webpack": "^4.35.3",
-    "webpack-cli": "^3.3.5"
+    "@babel/cli": "^7.11.5",
+    "@babel/core": "^7.11.5",
+    "@babel/plugin-transform-object-assign": "^7.10.4",
+    "@babel/preset-env": "^7.11.5",
+    "babel-loader": "^8.1.0",
+    "babel-preset-minify": "^0.5.1",
+    "core-js": "^3.6.5",
+    "eslint": "^7.8.1",
+    "webpack": "^4.44.1",
+    "webpack-cli": "^3.3.12"
   }
 }

runtime/js/runtime/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@wailsapp/runtime",
-  "version": "1.0.10",
+  "version": "1.0.11",
   "description": "Wails Javascript runtime library",
   "main": "main.js",
   "types": "runtime.d.ts",
@@ -25,4 +25,4 @@
   "devDependencies": {
     "dts-gen": "^0.5.8"
   }
-}
+}

runtime/js/runtime/runtime.d.ts

@@ -6,12 +6,12 @@ declare const wailsapp__runtime: {
         OpenURL(url: string): Promise<any>;
     };
     Events: {
-        Acknowledge(eventName: string): void; 
-        Emit(eventName: string): void;
-        Heartbeat(eventName: string, timeInMilliseconds: number, callback: () => void): void;
-        On(eventName: string, callback: () => void): void;
-        OnMultiple(eventName: string, callback: () => void, maxCallbacks: number): void;
-        Once(eventName: string, callback: () => void): void;
+        Acknowledge(eventName: string): void;
+        Emit(eventName: string, data?: any): void;
+        Heartbeat(eventName: string, timeInMilliseconds: number, callback: (data?: any) => void): void;
+        On(eventName: string, callback: (data?: any) => void): void;
+        OnMultiple(eventName: string, callback: (data?: any) => void, maxCallbacks: number): void;
+        Once(eventName: string, callback: (data?: any) => void): void;
     };
     Init(callback: () => void): void;
     Log: {

scripts/build.sh

@@ -1,5 +1,13 @@
 #!/usr/bin/env bash
 
+echo "**** Checking if Wails passes unit tests ****"
+if ! go test ./...
+then
+    echo ""
+    echo "ERROR: Unit tests failed!"
+    exit 1;
+fi
+
 # Build runtime
 echo "**** Building Runtime ****"
 cd runtime/js
@@ -15,9 +23,23 @@ cd lib/renderer
 mewn
 cd ../..
 
-echo "**** Installing Wails locally ****"
+
 cd cmd/wails
-go install
+echo "**** Checking if Wails compiles ****"
+if ! go build .
+then
+    echo ""
+    echo "ERROR: Build failed!"
+    exit 1;
+fi
+
+echo "**** Installing Wails locally ****"
+if ! go install
+then
+    echo ""
+    echo "ERROR: Install failed!"
+    exit 1;
+fi
 cd ../..
 
 echo "**** Tidying the mods! ****"

v2/.vscode/settings.json

@@ -0,0 +1,13 @@
+{
+    "files.associations": {
+        "ios": "c",
+        "typeinfo": "c",
+        "sstream": "c",
+        "__functional_03": "c",
+        "functional": "c",
+        "__locale": "c",
+        "locale": "c",
+        "chrono": "c",
+        "system_error": "c"
+    }
+}

v2/NOTES.md

@@ -0,0 +1,40 @@
+
+# Packing linux
+
+  * create app, app.desktop, app.png (512x512)
+  * chmod +x app!
+  * ./linuxdeploy-x86_64.AppImage --appdir AppDir -i react.png -d react.desktop  -e react --output appimage
+
+
+# Wails Doctor
+
+Tested on:
+
+  * Debian 8
+  * Ubuntu 20.04
+  * Ubuntu 19.10
+  * Solus 4.1
+  * Centos 8
+  * Gentoo
+  * OpenSUSE/leap
+  * Fedora 31
+
+### Development
+
+Add a new package manager processor here: `v2/internal/system/packagemanager/`. IsAvailable should work even if the package is installed.
+Add your new package manager to the list of package managers in `v2/internal/system/packagemanager/packagemanager.go`:
+
+```
+var db = map[string]PackageManager{
+	"eopkg":  NewEopkg(),
+	"apt":    NewApt(),
+	"yum":    NewYum(),
+	"pacman": NewPacman(),
+	"emerge": NewEmerge(),
+	"zypper": NewZypper(),
+}
+```
+
+## Gentoo
+
+  * Setup docker image using: emerge-webrsync -x -v

v2/README.md

@@ -0,0 +1,5 @@
+# Wails v2 ALPHA
+
+This branch contains WORK IN PROGRESS! There are no guarantees. Use at your peril! 
+
+This document will be updated as progress is made.

v2/cmd/wails/internal/commands/build/build.go

@@ -0,0 +1,113 @@
+package build
+
+import (
+	"fmt"
+	"io"
+	"runtime"
+	"strings"
+	"time"
+
+	"github.com/leaanthony/clir"
+	"github.com/leaanthony/slicer"
+	"github.com/wailsapp/wails/v2/pkg/clilogger"
+	"github.com/wailsapp/wails/v2/pkg/commands/build"
+)
+
+// AddBuildSubcommand adds the `build` command for the Wails application
+func AddBuildSubcommand(app *clir.Cli, w io.Writer) {
+
+	outputType := "desktop"
+
+	validTargetTypes := slicer.String([]string{"desktop", "hybrid", "server"})
+
+	command := app.NewSubCommand("build", "Builds the application")
+
+	// Setup target type flag
+	description := "Type of application to build. Valid types: " + validTargetTypes.Join(",")
+	command.StringFlag("t", description, &outputType)
+
+	// Setup production flag
+	production := false
+	command.BoolFlag("production", "Build in production mode", &production)
+
+	// Setup pack flag
+	pack := false
+	command.BoolFlag("pack", "Create a platform specific package", &pack)
+
+	compilerCommand := "go"
+	command.StringFlag("compiler", "Use a different go compiler to build, eg go1.15beta1", &compilerCommand)
+
+	// Setup Platform flag
+	platform := runtime.GOOS
+	command.StringFlag("platform", "Platform to target", &platform)
+
+	// Quiet Build
+	quiet := false
+	command.BoolFlag("q", "Supress output to console", &quiet)
+
+	// ldflags to pass to `go`
+	ldflags := ""
+	command.StringFlag("ldflags", "optional ldflags", &ldflags)
+
+	// Log to file
+	logFile := ""
+	command.StringFlag("l", "Log to file", &logFile)
+
+	command.Action(func() error {
+
+		// Create logger
+		logger := clilogger.New(w)
+		logger.Mute(quiet)
+
+		// Validate output type
+		if !validTargetTypes.Contains(outputType) {
+			return fmt.Errorf("output type '%s' is not valid", outputType)
+		}
+
+		if !quiet {
+			app.PrintBanner()
+		}
+
+		task := fmt.Sprintf("Building %s Application", strings.Title(outputType))
+		logger.Println(task)
+		logger.Println(strings.Repeat("-", len(task)))
+
+		// Setup mode
+		mode := build.Debug
+		if production {
+			mode = build.Production
+		}
+
+		// Create BuildOptions
+		buildOptions := &build.Options{
+			Logger:     logger,
+			OutputType: outputType,
+			Mode:       mode,
+			Pack:       pack,
+			Platform:   platform,
+			LDFlags:    ldflags,
+			Compiler:   compilerCommand,
+		}
+
+		return doBuild(buildOptions)
+	})
+}
+
+// doBuild is our main build command
+func doBuild(buildOptions *build.Options) error {
+
+	// Start Time
+	start := time.Now()
+
+	outputFilename, err := build.Build(buildOptions)
+	if err != nil {
+		return err
+	}
+	// Output stats
+	elapsed := time.Since(start)
+	buildOptions.Logger.Println("")
+	buildOptions.Logger.Println(fmt.Sprintf("Built '%s' in %s.", outputFilename, elapsed.Round(time.Millisecond).String()))
+	buildOptions.Logger.Println("")
+
+	return nil
+}

v2/cmd/wails/internal/commands/dev/dev.go

@@ -0,0 +1,261 @@
+package dev
+
+import (
+	"fmt"
+	"io"
+	"os"
+	"os/signal"
+	"runtime"
+	"strings"
+	"syscall"
+	"time"
+
+	"github.com/fsnotify/fsnotify"
+	"github.com/leaanthony/clir"
+	"github.com/leaanthony/slicer"
+	"github.com/wailsapp/wails/v2/internal/fs"
+	"github.com/wailsapp/wails/v2/internal/process"
+	"github.com/wailsapp/wails/v2/pkg/clilogger"
+	"github.com/wailsapp/wails/v2/pkg/commands/build"
+)
+
+// AddSubcommand adds the `dev` command for the Wails application
+func AddSubcommand(app *clir.Cli, w io.Writer) error {
+
+	command := app.NewSubCommand("dev", "Development mode")
+
+	outputType := "desktop"
+
+	validTargetTypes := slicer.String([]string{"desktop", "hybrid", "server"})
+
+	// Setup target type flag
+	description := "Type of application to develop. Valid types: " + validTargetTypes.Join(",")
+	command.StringFlag("t", description, &outputType)
+
+	// Passthrough ldflags
+	ldflags := ""
+	command.StringFlag("ldflags", "optional ldflags", &ldflags)
+
+	// compiler command
+	compilerCommand := "go"
+	command.StringFlag("compiler", "Use a different go compiler to build, eg go1.15beta1", &compilerCommand)
+
+	// extensions to trigger rebuilds
+	extensions := "go"
+	command.StringFlag("m", "Extensions to trigger rebuilds (comma separated) eg go,js,css,html", &extensions)
+
+	command.Action(func() error {
+
+		// Validate inputs
+		if !validTargetTypes.Contains(outputType) {
+			return fmt.Errorf("output type '%s' is not valid", outputType)
+		}
+
+		// Create logger
+		logger := clilogger.New(w)
+		app.PrintBanner()
+
+		// TODO: Check you are in a project directory
+
+		watcher, err := fsnotify.NewWatcher()
+		if err != nil {
+			return err
+		}
+		defer watcher.Close()
+
+		var debugBinaryProcess *process.Process = nil
+		var buildFrontend bool = true
+		var extensionsThatTriggerARebuild = strings.Split(extensions, ",")
+
+		// Setup signal handler
+		quitChannel := make(chan os.Signal, 1)
+		signal.Notify(quitChannel, os.Interrupt, os.Kill, syscall.SIGTERM)
+
+		debounceQuit := make(chan bool, 1)
+
+		// Do initial build
+		logger.Println("Building application for development...")
+		debugBinaryProcess = restartApp(logger, outputType, ldflags, compilerCommand, buildFrontend, debugBinaryProcess)
+
+		go debounce(100*time.Millisecond, watcher.Events, debounceQuit, func(event fsnotify.Event) {
+			// logger.Println("event: %+v", event)
+
+			// Check for new directories
+			if event.Op&fsnotify.Create == fsnotify.Create {
+				// If this is a folder, add it to our watch list
+				if fs.DirExists(event.Name) {
+					if !strings.Contains(event.Name, "node_modules") {
+						watcher.Add(event.Name)
+						logger.Println("Watching directory: %s", event.Name)
+					}
+				}
+				return
+			}
+
+			// Check for file writes
+			if event.Op&fsnotify.Write == fsnotify.Write {
+
+				// logger.Println("modified file: %s", event.Name)
+				var rebuild bool = false
+
+				// Iterate all file patterns
+				for _, pattern := range extensionsThatTriggerARebuild {
+					rebuild = strings.HasSuffix(event.Name, pattern)
+					if err != nil {
+						logger.Fatal(err.Error())
+					}
+					if rebuild {
+						// Only build frontend when the file isn't a Go file
+						buildFrontend = !strings.HasSuffix(event.Name, "go")
+						break
+					}
+				}
+
+				if !rebuild {
+					logger.Println("Filename change: %s did not match extension list %s", event.Name, extensions)
+					return
+				}
+
+				if buildFrontend {
+					logger.Println("Full rebuild triggered: %s updated", event.Name)
+				} else {
+					logger.Println("Partial build triggered: %s updated", event.Name)
+				}
+
+				// Do a rebuild
+
+				// Try and build the app
+				newBinaryProcess := restartApp(logger, outputType, ldflags, compilerCommand, buildFrontend, debugBinaryProcess)
+
+				// If we have a new process, save it
+				if newBinaryProcess != nil {
+					debugBinaryProcess = newBinaryProcess
+				}
+
+			}
+		})
+
+		// Get project dir
+		dir, err := os.Getwd()
+		if err != nil {
+			return err
+		}
+
+		// Get all subdirectories
+		dirs, err := fs.GetSubdirectories(dir)
+		if err != nil {
+			return err
+		}
+
+		// Setup a watcher for non-node_modules directories
+		dirs.Each(func(dir string) {
+			if strings.Contains(dir, "node_modules") {
+				return
+			}
+			logger.Println("Watching directory: %s", dir)
+			err = watcher.Add(dir)
+			if err != nil {
+				logger.Fatal(err.Error())
+			}
+		})
+
+		// Wait until we get a quit signal
+		quit := false
+		for quit == false {
+			select {
+			case <-quitChannel:
+				println()
+				// Notify debouncer to quit
+				debounceQuit <- true
+				quit = true
+			}
+		}
+
+		// Kill the current program if running
+		if debugBinaryProcess != nil {
+			debugBinaryProcess.Kill()
+		}
+
+		logger.Println("Development mode exited")
+
+		return nil
+	})
+
+	return nil
+}
+
+// Credit: https://drailing.net/2018/01/debounce-function-for-golang/
+func debounce(interval time.Duration, input chan fsnotify.Event, quitChannel chan bool, cb func(arg fsnotify.Event)) {
+	var item fsnotify.Event
+	timer := time.NewTimer(interval)
+exit:
+	for {
+		select {
+		case item = <-input:
+			timer.Reset(interval)
+		case <-timer.C:
+			if item.Name != "" {
+				cb(item)
+			}
+		case <-quitChannel:
+			break exit
+		}
+	}
+}
+
+func restartApp(logger *clilogger.CLILogger, outputType string, ldflags string, compilerCommand string, buildFrontend bool, debugBinaryProcess *process.Process) *process.Process {
+
+	appBinary, err := buildApp(logger, outputType, ldflags, compilerCommand, buildFrontend)
+	println()
+	if err != nil {
+		logger.Println("[ERROR] Build Failed: %s", err.Error())
+		return nil
+	}
+	logger.Println("Build new binary: %s", appBinary)
+
+	// Kill existing binary if need be
+	if debugBinaryProcess != nil {
+		killError := debugBinaryProcess.Kill()
+
+		if killError != nil {
+			logger.Fatal("Unable to kill debug binary (PID: %d)!", debugBinaryProcess.PID())
+		}
+
+		debugBinaryProcess = nil
+	}
+
+	// TODO: Generate `backend.js`
+
+	// Start up new binary
+	newProcess := process.NewProcess(logger, appBinary)
+	err = newProcess.Start()
+	if err != nil {
+		// Remove binary
+		fs.DeleteFile(appBinary)
+		logger.Fatal("Unable to start application: %s", err.Error())
+	}
+
+	return newProcess
+}
+
+func buildApp(logger *clilogger.CLILogger, outputType string, ldflags string, compilerCommand string, buildFrontend bool) (string, error) {
+
+	// Create random output file
+	outputFile := fmt.Sprintf("debug-%d", time.Now().Unix())
+
+	// Create BuildOptions
+	buildOptions := &build.Options{
+		Logger:         logger,
+		OutputType:     outputType,
+		Mode:           build.Debug,
+		Pack:           false,
+		Platform:       runtime.GOOS,
+		LDFlags:        ldflags,
+		Compiler:       compilerCommand,
+		OutputFile:     outputFile,
+		IgnoreFrontend: !buildFrontend,
+	}
+
+	return build.Build(buildOptions)
+
+}

v2/cmd/wails/internal/commands/doctor/doctor.go

@@ -0,0 +1,154 @@
+package doctor
+
+import (
+	"fmt"
+	"io"
+	"log"
+	"os"
+	"runtime"
+	"strings"
+	"text/tabwriter"
+
+	"github.com/leaanthony/clir"
+	"github.com/wailsapp/wails/v2/internal/system"
+	"github.com/wailsapp/wails/v2/internal/system/packagemanager"
+	"github.com/wailsapp/wails/v2/pkg/clilogger"
+)
+
+// AddSubcommand adds the `doctor` command for the Wails application
+func AddSubcommand(app *clir.Cli, w io.Writer) error {
+
+	command := app.NewSubCommand("doctor", "Diagnose your environment")
+
+	command.Action(func() error {
+
+		logger := clilogger.New(w)
+
+		app.PrintBanner()
+		logger.Print("Scanning system - please wait...")
+
+		// Get system info
+		info, err := system.GetInfo()
+		if err != nil {
+			return err
+		}
+		logger.Println("Done.")
+
+		// Start a new tabwriter
+		w := new(tabwriter.Writer)
+		w.Init(os.Stdout, 8, 8, 0, '\t', 0)
+
+		// Write out the system information
+		fmt.Fprintf(w, "\n")
+		fmt.Fprintf(w, "System\n")
+		fmt.Fprintf(w, "------\n")
+		fmt.Fprintf(w, "%s\t%s\n", "OS:", info.OS.Name)
+		fmt.Fprintf(w, "%s\t%s\n", "Version: ", info.OS.Version)
+		fmt.Fprintf(w, "%s\t%s\n", "ID:", info.OS.ID)
+
+		// Exit early if PM not found
+		if info.PM == nil {
+			fmt.Fprintf(w, "\n%s\t%s", "Package Manager:", "Not Found")
+			w.Flush()
+			println()
+			return nil
+		}
+		fmt.Fprintf(w, "%s\t%s\n", "Package Manager: ", info.PM.Name())
+
+		// Output Go Information
+		fmt.Fprintf(w, "%s\t%s\n", "Go Version:", runtime.Version())
+		fmt.Fprintf(w, "%s\t%s\n", "Platform:", runtime.GOOS)
+		fmt.Fprintf(w, "%s\t%s\n", "Architecture:", runtime.GOARCH)
+
+		// Output Dependencies Status
+		var dependenciesMissing = []string{}
+		var externalPackages = []*packagemanager.Dependancy{}
+		var dependenciesAvailableRequired = 0
+		var dependenciesAvailableOptional = 0
+		fmt.Fprintf(w, "\n")
+		fmt.Fprintf(w, "Dependency\tPackage Name\tStatus\tVersion\n")
+		fmt.Fprintf(w, "----------\t------------\t------\t-------\n")
+
+		// Loop over dependencies
+		for _, dependency := range info.Dependencies {
+
+			name := dependency.Name
+			if dependency.Optional {
+				name += "*"
+			}
+			packageName := "Unknown"
+			status := "Not Found"
+
+			// If we found the package
+			if dependency.PackageName != "" {
+
+				packageName = dependency.PackageName
+
+				// If it's installed, update the status
+				if dependency.Installed {
+					status = "Installed"
+				} else {
+					// Generate meaningful status text
+					status = "Available"
+
+					if dependency.Optional {
+						dependenciesAvailableOptional++
+					} else {
+						dependenciesAvailableRequired++
+					}
+				}
+			} else {
+				if !dependency.Optional {
+					dependenciesMissing = append(dependenciesMissing, dependency.Name)
+				}
+
+				if dependency.External {
+					externalPackages = append(externalPackages, dependency)
+				}
+			}
+
+			fmt.Fprintf(w, "%s\t%s\t%s\t%s\n", name, packageName, status, dependency.Version)
+		}
+		fmt.Fprintf(w, "\n")
+		fmt.Fprintf(w, "* - Optional Dependency\n")
+		w.Flush()
+		logger.Println("")
+		logger.Println("Diagnosis")
+		logger.Println("---------\n")
+
+		// Generate an appropriate diagnosis
+
+		if len(dependenciesMissing) == 0 && dependenciesAvailableRequired == 0 {
+			logger.Println("Your system is ready for Wails development!")
+		}
+
+		if dependenciesAvailableRequired != 0 {
+			log.Println("Install required packages using: " + info.Dependencies.InstallAllRequiredCommand())
+		}
+
+		if dependenciesAvailableOptional != 0 {
+			log.Println("Install optional packages using: " + info.Dependencies.InstallAllOptionalCommand())
+		}
+
+		if len(externalPackages) > 0 {
+			for _, p := range externalPackages {
+				if p.Optional {
+					print("[Optional] ")
+				}
+				log.Println("Install " + p.Name + ": " + p.InstallCommand)
+			}
+		}
+
+		if len(dependenciesMissing) != 0 {
+			// TODO: Check if apps are available locally and if so, adjust the diagnosis
+			log.Println("Fatal:")
+			log.Println("Required dependencies missing: " + strings.Join(dependenciesMissing, " "))
+			log.Println("Please read this article on how to resolve this: https://wails.app/guides/resolving-missing-packages")
+		}
+
+		log.Println("")
+		return nil
+	})
+
+	return nil
+}

v2/cmd/wails/internal/commands/generate/generate.go

@@ -0,0 +1,91 @@
+package generate
+
+import (
+	"io"
+	"time"
+
+	"github.com/leaanthony/clir"
+	"github.com/wailsapp/wails/v2/pkg/clilogger"
+	"github.com/wailsapp/wails/v2/pkg/parser"
+)
+
+// AddSubcommand adds the `dev` command for the Wails application
+func AddSubcommand(app *clir.Cli, w io.Writer) error {
+
+	command := app.NewSubCommand("generate", "Code Generation Tools")
+
+	// Backend API
+	backendAPI := command.NewSubCommand("module", "Generates a JS module for the frontend to interface with the backend")
+
+	// Quiet Init
+	quiet := false
+	backendAPI.BoolFlag("q", "Supress output to console", &quiet)
+
+	backendAPI.Action(func() error {
+
+		// Create logger
+		logger := clilogger.New(w)
+		logger.Mute(quiet)
+
+		app.PrintBanner()
+
+		logger.Print("Generating Javascript module for Go code...")
+
+		// Start Time
+		start := time.Now()
+
+		p, err := parser.GenerateWailsFrontendPackage()
+		if err != nil {
+			return err
+		}
+
+		logger.Println("done.")
+		logger.Println("")
+
+		elapsed := time.Since(start)
+		packages := p.Packages
+
+		// Print report
+		for _, pkg := range p.Packages {
+			if pkg.ShouldGenerate() {
+				logPackage(pkg, logger)
+			}
+
+		}
+
+		logger.Println("%d packages parsed in %s.", len(packages), elapsed)
+
+		return nil
+
+	})
+	return nil
+}
+
+func logPackage(pkg *parser.Package, logger *clilogger.CLILogger) {
+
+	logger.Println("Processed Go package '" + pkg.Gopackage.Name + "' as '" + pkg.Name + "'")
+	for _, strct := range pkg.Structs() {
+		logger.Println("")
+		logger.Println("  Processed struct '" + strct.Name + "'")
+		if strct.IsBound {
+			for _, method := range strct.Methods {
+				logger.Println("    Bound method '" + method.Name + "'")
+			}
+		}
+		if strct.IsUsedAsData {
+			for _, field := range strct.Fields {
+				if !field.Ignored {
+					logger.Print("    Processed ")
+					if field.IsOptional {
+						logger.Print("optional ")
+					}
+					logger.Println("field '" + field.Name + "' as '" + field.JSName() + "'")
+				}
+			}
+		}
+	}
+	logger.Println("")
+
+	// logger.Println("  Original Go Package Path:", pkg.Gopackage.PkgPath)
+	// logger.Println("  Original Go Package Path:", pkg.Gopackage.PkgPath)
+}

v2/cmd/wails/internal/commands/initialise/initialise.go

@@ -0,0 +1,130 @@
+package initialise
+
+import (
+	"fmt"
+	"io"
+	"strings"
+	"time"
+
+	"github.com/leaanthony/clir"
+	"github.com/wailsapp/wails/v2/internal/templates"
+	"github.com/wailsapp/wails/v2/pkg/clilogger"
+)
+
+// AddSubcommand adds the `init` command for the Wails application
+func AddSubcommand(app *clir.Cli, w io.Writer) error {
+
+	// Load the template shortnames
+	validShortNames, err := templates.TemplateShortNames()
+	if err != nil {
+		return err
+	}
+
+	command := app.NewSubCommand("init", "Initialise a new Wails project")
+
+	// Setup template name flag
+	templateName := "vanilla"
+	description := "Name of template to use. Valid tempates: " + validShortNames.Join(" ")
+	command.StringFlag("t", description, &templateName)
+
+	// Setup project name
+	projectName := ""
+	command.StringFlag("n", "Name of project", &projectName)
+
+	// Setup project directory
+	projectDirectory := ""
+	command.StringFlag("d", "Project directory", &projectDirectory)
+
+	// Quiet Init
+	quiet := false
+	command.BoolFlag("q", "Supress output to console", &quiet)
+
+	// VSCode project files
+	vscode := false
+	command.BoolFlag("vscode", "Generate VSCode project files", &vscode)
+
+	// List templates
+	list := false
+	command.BoolFlag("l", "List templates", &list)
+
+	command.Action(func() error {
+
+		// Create logger
+		logger := clilogger.New(w)
+		logger.Mute(quiet)
+
+		// Are we listing templates?
+		if list {
+			app.PrintBanner()
+			err := templates.OutputList(logger)
+			logger.Println("")
+			return err
+		}
+
+		// Validate output type
+		if !validShortNames.Contains(templateName) {
+			logger.Print(fmt.Sprintf("[ERROR] Template '%s' is not valid", templateName))
+			logger.Println("")
+			command.PrintHelp()
+			return nil
+		}
+
+		// Validate name
+		if len(projectName) == 0 {
+			logger.Println("ERROR: Project name required")
+			logger.Println("")
+			command.PrintHelp()
+			return nil
+		}
+
+		if !quiet {
+			app.PrintBanner()
+		}
+
+		task := fmt.Sprintf("Initialising Project %s", strings.Title(projectName))
+		logger.Println(task)
+		logger.Println(strings.Repeat("-", len(task)))
+
+		// Create Template Options
+		options := &templates.Options{
+			ProjectName:    projectName,
+			TargetDir:      projectDirectory,
+			TemplateName:   templateName,
+			Logger:         logger,
+			GenerateVSCode: vscode,
+		}
+
+		return initProject(options)
+	})
+
+	return nil
+}
+
+// initProject is our main init command
+func initProject(options *templates.Options) error {
+
+	// Start Time
+	start := time.Now()
+
+	// Install the template
+	err := templates.Install(options)
+	if err != nil {
+		return err
+	}
+
+	// Output stats
+	elapsed := time.Since(start)
+	options.Logger.Println("")
+	options.Logger.Println("Project Name:      " + options.ProjectName)
+	options.Logger.Println("Project Directory: " + options.TargetDir)
+	options.Logger.Println("Project Template:  " + options.TemplateName)
+	options.Logger.Println("")
+	if options.GenerateVSCode {
+		options.Logger.Println("VSCode config files generated.")
+	}
+	options.Logger.Println("")
+	options.Logger.Println(fmt.Sprintf("Initialised project '%s' in %s.", options.ProjectName, elapsed.Round(time.Millisecond).String()))
+	options.Logger.Println("")
+
+	return nil
+}

v2/cmd/wails/main.go

@@ -0,0 +1,50 @@
+package main
+
+import (
+	"os"
+
+	"github.com/leaanthony/clir"
+	"github.com/wailsapp/wails/v2/cmd/wails/internal/commands/build"
+	"github.com/wailsapp/wails/v2/cmd/wails/internal/commands/dev"
+	"github.com/wailsapp/wails/v2/cmd/wails/internal/commands/doctor"
+	"github.com/wailsapp/wails/v2/cmd/wails/internal/commands/generate"
+	"github.com/wailsapp/wails/v2/cmd/wails/internal/commands/initialise"
+)
+
+func fatal(message string) {
+	println(message)
+	os.Exit(1)
+}
+
+func main() {
+
+	var err error
+	version := "v2.0.0-alpha"
+
+	app := clir.NewCli("Wails", "Go/HTML Application Framework", version)
+
+	build.AddBuildSubcommand(app, os.Stdout)
+	err = initialise.AddSubcommand(app, os.Stdout)
+	if err != nil {
+		fatal(err.Error())
+	}
+	err = doctor.AddSubcommand(app, os.Stdout)
+	if err != nil {
+		fatal(err.Error())
+	}
+
+	err = dev.AddSubcommand(app, os.Stdout)
+	if err != nil {
+		fatal(err.Error())
+	}
+
+	err = generate.AddSubcommand(app, os.Stdout)
+	if err != nil {
+		fatal(err.Error())
+	}
+
+	err = app.Run()
+	if err != nil {
+		println("\n\nERROR: " + err.Error())
+	}
+}

v2/go.mod

@@ -0,0 +1,26 @@
+module github.com/wailsapp/wails/v2
+
+go 1.13
+
+require (
+	github.com/davecgh/go-spew v1.1.1
+	github.com/fatih/structtag v1.2.0
+	github.com/fsnotify/fsnotify v1.4.9
+	github.com/imdario/mergo v0.3.11
+	github.com/leaanthony/clir v1.0.4
+	github.com/leaanthony/gosod v0.0.4
+	github.com/leaanthony/slicer v1.5.0
+	github.com/matryer/is v1.4.0
+	github.com/niemeyer/pretty v0.0.0-20200227124842-a10e7caefd8e // indirect
+	github.com/olekukonko/tablewriter v0.0.4
+	github.com/pkg/errors v0.9.1
+	github.com/tdewolff/minify v2.3.6+incompatible
+	github.com/tdewolff/parse v2.3.4+incompatible // indirect
+	github.com/tdewolff/test v1.0.6 // indirect
+	github.com/xyproto/xpm v1.2.1
+	golang.org/x/net v0.0.0-20200822124328-c89045814202
+	golang.org/x/sys v0.0.0-20200724161237-0e2f3a69832c
+	golang.org/x/tools v0.0.0-20200902012652-d1954cc86c82
+	gopkg.in/check.v1 v1.0.0-20200902074654-038fdea0a05b // indirect
+	nhooyr.io/websocket v1.8.6
+)

v2/go.sum

@@ -0,0 +1,130 @@
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v2/internal/app/debug.go

@@ -0,0 +1,9 @@
+// +build debug
+
+package app
+
+// Init initialises the application for a debug environment
+func (a *App) Init() error {
+	a.debug = true
+	return nil
+}

v2/internal/app/default.go

@@ -0,0 +1,42 @@
+// +build !desktop,!hybrid,!server
+
+package app
+
+// This is the default application that will get run if the user compiles using `go build`.
+// The reason we want to prevent that is that the `wails build` command does a lot of behind
+// the scenes work such as asset compilation. If we allow `go build`, the state of these assets
+// will be unknown and the application will not work as expected.
+
+import (
+	"os"
+
+	"github.com/wailsapp/wails/v2/pkg/options"
+)
+
+// App defines a Wails application structure
+type App struct {
+	Title     string
+	Width     int
+	Height    int
+	Resizable bool
+
+	// Indicates if the app is running in debug mode
+	debug bool
+}
+
+// CreateApp returns a null application
+func CreateApp(options *options.App) *App {
+	return &App{}
+}
+
+// Run the application
+func (a *App) Run() error {
+	println(`FATAL: This application was built using "go build". This is unsupported. Please compile using "wails build".`)
+	os.Exit(1)
+	return nil
+}
+
+// Bind the dummy interface
+func (a *App) Bind(dummy interface{}) error {
+	return nil
+}

v2/internal/app/desktop.go

@@ -0,0 +1,159 @@
+// +build desktop,!server
+
+package app
+
+import (
+	"github.com/wailsapp/wails/v2/internal/binding"
+	"github.com/wailsapp/wails/v2/internal/ffenestri"
+	"github.com/wailsapp/wails/v2/internal/logger"
+	"github.com/wailsapp/wails/v2/internal/messagedispatcher"
+	"github.com/wailsapp/wails/v2/internal/servicebus"
+	"github.com/wailsapp/wails/v2/internal/signal"
+	"github.com/wailsapp/wails/v2/internal/subsystem"
+	"github.com/wailsapp/wails/v2/pkg/options"
+	"github.com/wailsapp/wails/v2/internal/runtime"
+)
+
+// App defines a Wails application structure
+type App struct {
+	window     *ffenestri.Application
+	servicebus *servicebus.ServiceBus
+	logger     *logger.Logger
+	signal     *signal.Manager
+	options    *options.App
+
+	// Subsystems
+	log        *subsystem.Log
+	runtime    *subsystem.Runtime
+	event      *subsystem.Event
+	binding    *subsystem.Binding
+	call       *subsystem.Call
+	dispatcher *messagedispatcher.Dispatcher
+
+	// Indicates if the app is in debug mode
+	debug bool
+
+	// This is our binding DB
+	bindings *binding.Bindings
+
+	// LogLevel Store
+	loglevelStore *runtime.Store
+}
+
+// Create App
+func CreateApp(options *options.App) *App {
+
+	// Merge default options
+	options.MergeDefaults()
+
+	// Set up logger
+	myLogger := logger.New(options.Logger)
+	myLogger.SetLogLevel(options.LogLevel)
+
+	window := ffenestri.NewApplicationWithConfig(options, myLogger)
+
+	result := &App{
+		window:     window,
+		servicebus: servicebus.New(myLogger),
+		logger:     myLogger,
+		bindings:   binding.NewBindings(myLogger),
+	}
+
+	result.options = options
+
+	// Initialise the app
+	result.Init()
+
+	return result
+
+}
+
+// Run the application
+func (a *App) Run() error {
+
+	// Setup signal handler
+	signal, err := signal.NewManager(a.servicebus, a.logger)
+	if err != nil {
+		return err
+	}
+	a.signal = signal
+	a.signal.Start()
+
+	// Start the service bus
+	a.servicebus.Debug()
+	a.servicebus.Start()
+
+	// Start the runtime
+	runtime, err := subsystem.NewRuntime(a.servicebus, a.logger)
+	if err != nil {
+		return err
+	}
+	a.runtime = runtime
+	a.runtime.Start()
+
+	// Application Stores
+	a.loglevelStore = a.runtime.GoRuntime().Store.New("loglevel", a.options.LogLevel)
+
+	// Start the binding subsystem
+	binding, err := subsystem.NewBinding(a.servicebus, a.logger, a.bindings, a.runtime.GoRuntime())
+	if err != nil {
+		return err
+	}
+	a.binding = binding
+	a.binding.Start()
+
+	// Start the logging subsystem
+	log, err := subsystem.NewLog(a.servicebus, a.logger, a.loglevelStore)
+	if err != nil {
+		return err
+	}
+	a.log = log
+	a.log.Start()
+
+	// create the dispatcher
+	dispatcher, err := messagedispatcher.New(a.servicebus, a.logger)
+	if err != nil {
+		return err
+	}
+	a.dispatcher = dispatcher
+	dispatcher.Start()
+
+	// Start the eventing subsystem
+	event, err := subsystem.NewEvent(a.servicebus, a.logger)
+	if err != nil {
+		return err
+	}
+	a.event = event
+	a.event.Start()
+
+	// Start the call subsystem
+	call, err := subsystem.NewCall(a.servicebus, a.logger, a.bindings.DB(), a.runtime.GoRuntime())
+	if err != nil {
+		return err
+	}
+	a.call = call
+	a.call.Start()
+
+	// Dump bindings as a debug
+	bindingDump, err := a.bindings.ToJSON()
+	if err != nil {
+		return err
+	}
+
+	result := a.window.Run(dispatcher, bindingDump)
+	a.logger.Trace("Ffenestri.Run() exited")
+	a.servicebus.Stop()
+
+	return result
+}
+
+// Bind a struct to the application by passing in
+// a pointer to it
+func (a *App) Bind(structPtr interface{}) {
+
+	// Add the struct to the bindings
+	err := a.bindings.Add(structPtr)
+	if err != nil {
+		a.logger.Fatal("Error during binding: " + err.Error())
+	}
+}

v2/internal/app/hybrid.go

@@ -0,0 +1,207 @@
+// +build !server,!desktop,hybrid
+
+package app
+
+import (
+	"os"
+	"path/filepath"
+
+	"github.com/leaanthony/clir"
+	"github.com/wailsapp/wails/v2/internal/binding"
+	"github.com/wailsapp/wails/v2/internal/ffenestri"
+	"github.com/wailsapp/wails/v2/internal/logger"
+	"github.com/wailsapp/wails/v2/internal/messagedispatcher"
+	"github.com/wailsapp/wails/v2/internal/servicebus"
+	"github.com/wailsapp/wails/v2/internal/subsystem"
+	"github.com/wailsapp/wails/v2/internal/webserver"
+)
+
+// Config defines the Application's configuration
+type Config struct {
+	Title         string // Title is the value to be displayed in the title bar
+	Width         int    // Width is the desired window width
+	Height        int    // Height is the desired window height
+	DevTools      bool   // DevTools enables or disables the browser development tools
+	Resizable     bool   // Resizable when False prevents window resizing
+	ServerEnabled bool   // ServerEnabled when True allows remote connections
+}
+
+// App defines a Wails application structure
+type App struct {
+	config    Config
+	window    *ffenestri.Application
+	webserver *webserver.WebServer
+	binding   *subsystem.Binding
+	call      *subsystem.Call
+	event     *subsystem.Event
+	log       *subsystem.Log
+	runtime   *subsystem.Runtime
+
+	bindings   *binding.Bindings
+	logger     *logger.Logger
+	dispatcher *messagedispatcher.Dispatcher
+	servicebus *servicebus.ServiceBus
+
+	debug bool
+}
+
+// Create App
+func CreateApp(options *Options) *App {
+
+	// Merge default options
+	options.mergeDefaults()
+
+	// Set up logger
+	myLogger := logger.New(os.Stdout)
+	myLogger.SetLogLevel(logger.INFO)
+
+	window := ffenestri.NewApplicationWithConfig(&ffenestri.Config{
+		Title:       options.Title,
+		Width:       options.Width,
+		Height:      options.Height,
+		MinWidth:    options.MinWidth,
+		MinHeight:   options.MinHeight,
+		MaxWidth:    options.MaxWidth,
+		MaxHeight:   options.MaxHeight,
+		StartHidden: options.StartHidden,
+
+		// This should be controlled by the compile time flags...
+		DevTools: true,
+
+		Resizable:  !options.DisableResize,
+		Fullscreen: options.Fullscreen,
+	}, myLogger)
+
+	app := &App{
+		window:     window,
+		webserver:  webserver.NewWebServer(myLogger),
+		servicebus: servicebus.New(myLogger),
+		logger:     myLogger,
+		bindings:   binding.NewBindings(myLogger),
+	}
+
+	// Initialise the app
+	app.Init()
+
+	return app
+}
+
+// Run the application
+func (a *App) Run() error {
+
+	// Default app options
+	var port = 8080
+	var ip = "localhost"
+	var suppressLogging = false
+
+	// Create CLI
+	cli := clir.NewCli(filepath.Base(os.Args[0]), "Desktop/Server Build", "")
+
+	// Setup flags
+	cli.IntFlag("p", "Port to serve on", &port)
+	cli.StringFlag("i", "IP to serve on", &ip)
+	cli.BoolFlag("q", "Suppress logging", &suppressLogging)
+
+	// Setup main action
+	cli.Action(func() error {
+
+		// Set IP + Port
+		a.webserver.SetPort(port)
+		a.webserver.SetIP(ip)
+		a.webserver.SetBindings(a.bindings)
+		// Log information (if we aren't suppressing it)
+		if !suppressLogging {
+			cli.PrintBanner()
+			a.logger.Info("Running server at %s", a.webserver.URL())
+		}
+
+		a.servicebus.Start()
+		log, err := subsystem.NewLog(a.servicebus, a.logger)
+		if err != nil {
+			return err
+		}
+		a.log = log
+		a.log.Start()
+		dispatcher, err := messagedispatcher.New(a.servicebus, a.logger)
+		if err != nil {
+			return err
+		}
+		a.dispatcher = dispatcher
+		a.dispatcher.Start()
+
+		// Start the runtime
+		runtime, err := subsystem.NewRuntime(a.servicebus, a.logger)
+		if err != nil {
+			return err
+		}
+		a.runtime = runtime
+		a.runtime.Start()
+
+		// Start the binding subsystem
+		binding, err := subsystem.NewBinding(a.servicebus, a.logger, a.bindings, runtime.GoRuntime())
+		if err != nil {
+			return err
+		}
+		a.binding = binding
+		a.binding.Start()
+
+		// Start the eventing subsystem
+		event, err := subsystem.NewEvent(a.servicebus, a.logger)
+		if err != nil {
+			return err
+		}
+		a.event = event
+		a.event.Start()
+
+		// Start the call subsystem
+		call, err := subsystem.NewCall(a.servicebus, a.logger, a.bindings.DB())
+		if err != nil {
+			return err
+		}
+		a.call = call
+		a.call.Start()
+
+		// Required so that the WailsInit functions are fired!
+		runtime.GoRuntime().Events.Emit("wails:loaded")
+
+		// Set IP + Port
+		a.webserver.SetPort(port)
+		a.webserver.SetIP(ip)
+
+		// Log information (if we aren't suppressing it)
+		if !suppressLogging {
+			cli.PrintBanner()
+			println("Running server at " + a.webserver.URL())
+		}
+
+		// Dump bindings as a debug
+		bindingDump, err := a.bindings.ToJSON()
+		if err != nil {
+			return err
+		}
+
+		go func() {
+			if err := a.webserver.Start(dispatcher, event); err != nil {
+				a.logger.Error("Webserver failed to start %s", err)
+			}
+		}()
+
+		result := a.window.Run(dispatcher, bindingDump)
+		a.servicebus.Stop()
+
+		return result
+	})
+
+	return cli.Run()
+}
+
+// Bind a struct to the application by passing in
+// a pointer to it
+func (a *App) Bind(structPtr interface{}) {
+
+	// Add the struct to the bindings
+	err := a.bindings.Add(structPtr)
+	if err != nil {
+		a.logger.Fatal("Error during binding: " + err.Error())
+	}
+}

v2/internal/app/production.go

@@ -0,0 +1,9 @@
+// +build !debug
+
+package app
+
+// Init initialises the application for a production environment
+func (a *App) Init() error {
+	println("Processing production cli options")
+	return nil
+}

v2/internal/app/server.go

@@ -0,0 +1,160 @@
+// +build server,!desktop
+
+package app
+
+import (
+	"os"
+	"path/filepath"
+
+	"github.com/leaanthony/clir"
+	"github.com/wailsapp/wails/v2/internal/binding"
+	"github.com/wailsapp/wails/v2/internal/logger"
+	"github.com/wailsapp/wails/v2/internal/messagedispatcher"
+	"github.com/wailsapp/wails/v2/internal/servicebus"
+	"github.com/wailsapp/wails/v2/internal/subsystem"
+	"github.com/wailsapp/wails/v2/internal/webserver"
+)
+
+// App defines a Wails application structure
+type App struct {
+	binding *subsystem.Binding
+	call    *subsystem.Call
+	event   *subsystem.Event
+	log     *subsystem.Log
+	runtime *subsystem.Runtime
+
+	bindings   *binding.Bindings
+	logger     *logger.Logger
+	dispatcher *messagedispatcher.Dispatcher
+	servicebus *servicebus.ServiceBus
+	webserver  *webserver.WebServer
+
+	debug bool
+}
+
+// Create App
+func CreateApp(options *Options) *App {
+	options.mergeDefaults()
+	// We ignore the inputs (for now)
+
+	// TODO: Allow logger output override on CLI
+	myLogger := logger.New(os.Stdout)
+	myLogger.SetLogLevel(logger.TRACE)
+
+	result := &App{
+		bindings:   binding.NewBindings(myLogger),
+		logger:     myLogger,
+		servicebus: servicebus.New(myLogger),
+		webserver:  webserver.NewWebServer(myLogger),
+	}
+
+	// Initialise app
+	result.Init()
+
+	return result
+}
+
+// Run the application
+func (a *App) Run() error {
+
+	// Default app options
+	var port = 8080
+	var ip = "localhost"
+	var supressLogging = false
+	var debugMode = false
+
+	// Create CLI
+	cli := clir.NewCli(filepath.Base(os.Args[0]), "Server Build", "")
+
+	// Setup flags
+	cli.IntFlag("p", "Port to serve on", &port)
+	cli.StringFlag("i", "IP to serve on", &ip)
+	cli.BoolFlag("d", "Debug mode", &debugMode)
+	cli.BoolFlag("q", "Supress logging", &supressLogging)
+
+	// Setup main action
+	cli.Action(func() error {
+
+		// Set IP + Port
+		a.webserver.SetPort(port)
+		a.webserver.SetIP(ip)
+		a.webserver.SetBindings(a.bindings)
+		// Log information (if we aren't supressing it)
+		if !supressLogging {
+			cli.PrintBanner()
+			a.logger.Info("Running server at %s", a.webserver.URL())
+		}
+
+		if debugMode {
+			a.servicebus.Debug()
+		}
+		a.servicebus.Start()
+		log, err := subsystem.NewLog(a.servicebus, a.logger)
+		if err != nil {
+			return err
+		}
+		a.log = log
+		a.log.Start()
+		dispatcher, err := messagedispatcher.New(a.servicebus, a.logger)
+		if err != nil {
+			return err
+		}
+		a.dispatcher = dispatcher
+		a.dispatcher.Start()
+
+		// Start the runtime
+		runtime, err := subsystem.NewRuntime(a.servicebus, a.logger)
+		if err != nil {
+			return err
+		}
+		a.runtime = runtime
+		a.runtime.Start()
+
+		// Start the binding subsystem
+		binding, err := subsystem.NewBinding(a.servicebus, a.logger, a.bindings, runtime.GoRuntime())
+		if err != nil {
+			return err
+		}
+		a.binding = binding
+		a.binding.Start()
+
+		// Start the eventing subsystem
+		event, err := subsystem.NewEvent(a.servicebus, a.logger)
+		if err != nil {
+			return err
+		}
+		a.event = event
+		a.event.Start()
+
+		// Start the call subsystem
+		call, err := subsystem.NewCall(a.servicebus, a.logger, a.bindings.DB())
+		if err != nil {
+			return err
+		}
+		a.call = call
+		a.call.Start()
+
+		// Required so that the WailsInit functions are fired!
+		runtime.GoRuntime().Events.Emit("wails:loaded")
+
+		if err := a.webserver.Start(dispatcher, event); err != nil {
+			a.logger.Error("Webserver failed to start %s", err)
+			return err
+		}
+
+		return nil
+	})
+
+	return cli.Run()
+}
+
+// Bind a struct to the application by passing in
+// a pointer to it
+func (a *App) Bind(structPtr interface{}) {
+
+	// Add the struct to the bindings
+	err := a.bindings.Add(structPtr)
+	if err != nil {
+		a.logger.Fatal("Error during binding: " + err.Error())
+	}
+}

v2/internal/assetdb/assetdb.go

@@ -0,0 +1,112 @@
+package assetdb
+
+import (
+	"fmt"
+	"strings"
+	"unsafe"
+)
+
+// AssetDB is a database for assets encoded as byte slices
+type AssetDB struct {
+	db map[string][]byte
+}
+
+// NewAssetDB creates a new AssetDB and initialises a blank db
+func NewAssetDB() *AssetDB {
+	return &AssetDB{
+		db: make(map[string][]byte),
+	}
+}
+
+// AddAsset saves the given byte slice under the given name
+func (a *AssetDB) AddAsset(name string, data []byte) {
+	a.db[name] = data
+}
+
+// Remove removes the named asset
+func (a *AssetDB) Remove(name string) {
+	delete(a.db, name)
+}
+
+// Asset retrieves the byte slice for the given name
+func (a *AssetDB) Read(name string) ([]byte, error) {
+	result := a.db[name]
+	if result == nil {
+		return nil, fmt.Errorf("asset '%s' not found", name)
+	}
+	return result, nil
+}
+
+// AssetAsString returns the asset as a string.
+// It also returns a boolean indicating whether the asset existed or not.
+func (a *AssetDB) String(name string) (string, error) {
+	asset, err := a.Read(name)
+	if err != nil {
+		return "", err
+	}
+	return *(*string)(unsafe.Pointer(&asset)), nil
+}
+
+func (a *AssetDB) Dump() {
+	fmt.Printf("Assets:\n")
+	for k, _ := range a.db {
+		fmt.Println(k)
+	}
+}
+
+// Serialize converts the entire database to a file that when compiled will
+// reconstruct the AssetDB during init()
+// name: name of the asset.AssetDB instance
+// pkg:  package name placed at the top of the file
+func (a *AssetDB) Serialize(name, pkg string) string {
+	var cdata strings.Builder
+	// Set buffer size to 4k
+	cdata.Grow(4096)
+
+	// Write header
+	header := `// DO NOT EDIT - Generated automatically
+package %s
+
+import "github.com/wailsapp/wails/v2/internal/assetdb"
+
+var (
+	%s *assetdb.AssetDB = assetdb.NewAssetDB()
+)
+
+// AssetsDB is a clean interface to the assetdb.AssetDB struct
+type AssetsDB interface {
+	Read(string) ([]byte, error)
+	String(string) (string, error)
+}
+
+// Assets returns the asset database
+func Assets() AssetsDB {
+	return %s
+}
+
+func init() {
+`
+	cdata.WriteString(fmt.Sprintf(header, pkg, name, name))
+
+	for aname, bytes := range a.db {
+		cdata.WriteString(fmt.Sprintf("\t%s.AddAsset(\"%s\", []byte{",
+			name,
+			aname))
+
+		l := len(bytes)
+		if l == 0 {
+			cdata.WriteString("0x00})\n")
+			continue
+		}
+
+		// Convert each byte to hex
+		for _, b := range bytes[:l-1] {
+			cdata.WriteString(fmt.Sprintf("0x%x, ", b))
+		}
+		cdata.WriteString(fmt.Sprintf("0x%x})\n", bytes[l-1]))
+	}
+
+	cdata.WriteString(`}`)
+
+	return cdata.String()
+}

v2/internal/assetdb/assetdb_test.go

@@ -0,0 +1,70 @@
+package assetdb
+
+import "testing"
+import "github.com/matryer/is"
+
+func TestExistsAsBytes(t *testing.T) {
+
+	is := is.New(t)
+
+	var helloworld = []byte{72, 101, 108, 108, 111, 44, 32, 87, 111, 114, 108, 100, 33}
+
+	db := NewAssetDB()
+	db.AddAsset("hello", helloworld)
+
+	result, err := db.Read("hello")
+
+	is.True(err == nil)
+	is.Equal(result, helloworld)
+}
+
+func TestNotExistsAsBytes(t *testing.T) {
+
+	is := is.New(t)
+
+	var helloworld = []byte{72, 101, 108, 108, 111, 44, 32, 87, 111, 114, 108, 100, 33}
+
+	db := NewAssetDB()
+	db.AddAsset("hello4", helloworld)
+
+	result, err := db.Read("hello")
+
+	is.True(err != nil)
+	is.True(result == nil)
+}
+
+func TestExistsAsString(t *testing.T) {
+
+	is := is.New(t)
+
+	var helloworld = []byte{72, 101, 108, 108, 111, 44, 32, 87, 111, 114, 108, 100, 33}
+
+	db := NewAssetDB()
+	db.AddAsset("hello", helloworld)
+
+	result, err := db.String("hello")
+
+	// Ensure it exists
+	is.True(err == nil)
+
+	// Ensure the string is the same as the byte slice
+	is.Equal(result, "Hello, World!")
+}
+
+func TestNotExistsAsString(t *testing.T) {
+
+	is := is.New(t)
+
+	var helloworld = []byte{72, 101, 108, 108, 111, 44, 32, 87, 111, 114, 108, 100, 33}
+
+	db := NewAssetDB()
+	db.AddAsset("hello", helloworld)
+
+	result, err := db.String("help")
+
+	// Ensure it doesn't exist
+	is.True(err != nil)
+
+	// Ensure the string is blank
+	is.Equal(result, "")
+}

v2/internal/assetdb/filesystem.go

@@ -0,0 +1,176 @@
+// +build !desktop
+package assetdb
+
+import (
+	"errors"
+	"io"
+	"net/http"
+	"os"
+	"path"
+	"sort"
+	"strings"
+	"time"
+)
+
+var errWhence = errors.New("Seek: invalid whence")
+var errOffset = errors.New("Seek: invalid offset")
+
+// Open implements the http.FileSystem interface for the AssetDB
+func (a *AssetDB) Open(name string) (http.File, error) {
+	if name == "/" || name == "" {
+		return &Entry{name: "/", dir: true, db: a}, nil
+	}
+
+	if data, ok := a.db[name]; ok {
+		return &Entry{name: name, data: data, size: len(data)}, nil
+	} else {
+		for n, _ := range a.db {
+			if strings.HasPrefix(n, name+"/") {
+				return &Entry{name: name, db: a, dir: true}, nil
+			}
+		}
+	}
+	return &Entry{}, os.ErrNotExist
+}
+
+// readdir returns the directory entries for the requested directory
+func (a *AssetDB) readdir(name string) ([]os.FileInfo, error) {
+	dir := name
+	var ents []string
+
+	fim := make(map[string]os.FileInfo)
+	for fn, data := range a.db {
+		if strings.HasPrefix(fn, dir) {
+			pieces := strings.Split(fn[len(dir)+1:], "/")
+			if len(pieces) == 1 {
+				fim[pieces[0]] = FI{name: pieces[0], dir: false, size: len(data)}
+				ents = append(ents, pieces[0])
+			} else {
+				fim[pieces[0]] = FI{name: pieces[0], dir: true, size: -1}
+				ents = append(ents, pieces[0])
+			}
+		}
+	}
+
+	if len(ents) == 0 {
+		return nil, os.ErrNotExist
+	}
+
+	sort.Strings(ents)
+	var list []os.FileInfo
+	for _, dir := range ents {
+		list = append(list, fim[dir])
+	}
+	return list, nil
+}
+
+// Entry implements the http.File interface to allow for
+// use in the http.FileSystem implementation of AssetDB
+type Entry struct {
+	name string
+	data []byte
+	dir  bool
+	size int
+	db   *AssetDB
+	off  int
+}
+
+// Close is a noop
+func (e Entry) Close() error {
+	return nil
+}
+
+// Read fills the slice provided returning how many bytes were written
+// and any errors encountered
+func (e *Entry) Read(p []byte) (n int, err error) {
+	if e.off >= e.size {
+		return 0, io.EOF
+	}
+	numout := len(p)
+	if numout > e.size {
+		numout = e.size
+	}
+	for i := 0; i < numout; i++ {
+		p[i] = e.data[e.off+i]
+	}
+	e.off += numout
+	n = int(numout)
+	err = nil
+	return
+}
+
+// Seek seeks to the specified offset from the location specified by whence
+func (e *Entry) Seek(offset int64, whence int) (int64, error) {
+	switch whence {
+	default:
+		return 0, errWhence
+	case io.SeekStart:
+		offset += 0
+	case io.SeekCurrent:
+		offset += int64(e.off)
+	case io.SeekEnd:
+		offset += int64(e.size)
+	}
+
+	if offset < 0 {
+		return 0, errOffset
+	}
+	e.off = int(offset)
+	return offset, nil
+}
+
+// Readdir returns the directory entries inside this entry if it is a directory
+func (e Entry) Readdir(count int) ([]os.FileInfo, error) {
+	ents := []os.FileInfo{}
+	if !e.dir {
+		return ents, errors.New("Not a directory")
+	}
+	return e.db.readdir(e.name)
+}
+
+// Stat returns information about this directory entry
+func (e Entry) Stat() (os.FileInfo, error) {
+	return FI{e.name, e.size, e.dir}, nil
+}
+
+// FI is the AssetDB implementation of os.FileInfo.
+type FI struct {
+	name string
+	size int
+	dir  bool
+}
+
+// IsDir returns true if this is a directory
+func (fi FI) IsDir() bool {
+	return fi.dir
+}
+
+// ModTime always returns now
+func (fi FI) ModTime() time.Time {
+	return time.Time{}
+}
+
+// Mode returns the file as readonly and directories
+// as world writeable and executable
+func (fi FI) Mode() os.FileMode {
+	if fi.IsDir() {
+		return 0755 | os.ModeDir
+	}
+	return 0444
+}
+
+// Name returns the name of this object without
+// any leading slashes
+func (fi FI) Name() string {
+	return path.Base(fi.name)
+}
+
+// Size returns the size of this item
+func (fi FI) Size() int64 {
+	return int64(fi.size)
+}
+
+// Sys returns nil
+func (fi FI) Sys() interface{} {
+	return nil
+}

v2/internal/assetdb/filesystem_test.go

@@ -0,0 +1,108 @@
+package assetdb
+
+import (
+	"fmt"
+	"os"
+	"testing"
+
+	"github.com/matryer/is"
+)
+
+func TestOpenLeadingSlash(t *testing.T) {
+	is := is.New(t)
+
+	var helloworld = []byte{72, 101, 108, 108, 111, 44, 32, 87, 111, 114, 108, 100, 33}
+
+	db := NewAssetDB()
+	db.AddAsset("/hello", helloworld)
+
+	file, err := db.Open("/hello")
+	// Ensure it does exist
+	is.True(err == nil)
+
+	buff := make([]byte, len(helloworld))
+	n, err := file.Read(buff)
+	fmt.Printf("Error %v\n", err)
+	is.True(err == nil)
+	is.Equal(n, len(helloworld))
+	result := string(buff)
+
+	// Ensure the string is blank
+	is.Equal(result, string(helloworld))
+}
+
+func TestOpen(t *testing.T) {
+	is := is.New(t)
+
+	var helloworld = []byte{72, 101, 108, 108, 111, 44, 32, 87, 111, 114, 108, 100, 33}
+
+	db := NewAssetDB()
+	db.AddAsset("/hello", helloworld)
+
+	file, err := db.Open("/hello")
+
+	// Ensure it does exist
+	is.True(err == nil)
+
+	buff := make([]byte, len(helloworld))
+	n, err := file.Read(buff)
+	is.True(err == nil)
+	is.Equal(n, len(helloworld))
+	result := string(buff)
+
+	// Ensure the string is blank
+	is.Equal(result, string(helloworld))
+}
+
+func TestReaddir(t *testing.T) {
+	is := is.New(t)
+
+	var helloworld = []byte{72, 101, 108, 108, 111, 44, 32, 87, 111, 114, 108, 100, 33}
+
+	db := NewAssetDB()
+	db.AddAsset("/hello", helloworld)
+	db.AddAsset("/directory/hello", helloworld)
+	db.AddAsset("/directory/subdirectory/hello", helloworld)
+
+	dir, err := db.Open("/doesntexist")
+	is.True(err == os.ErrNotExist)
+	ents, err := dir.Readdir(-1)
+	is.Equal([]os.FileInfo{}, ents)
+
+	dir, err = db.Open("/")
+	is.True(dir != nil)
+	is.True(err == nil)
+	ents, err = dir.Readdir(-1)
+	is.True(err == nil)
+	is.Equal(3, len(ents))
+}
+
+func TestReaddirSubdirectory(t *testing.T) {
+	is := is.New(t)
+
+	var helloworld = []byte{72, 101, 108, 108, 111, 44, 32, 87, 111, 114, 108, 100, 33}
+
+	db := NewAssetDB()
+	db.AddAsset("/hello", helloworld)
+	db.AddAsset("/directory/hello", helloworld)
+	db.AddAsset("/directory/subdirectory/hello", helloworld)
+
+	expected := []os.FileInfo{
+		FI{name: "hello", dir: false, size: len(helloworld)},
+		FI{name: "subdirectory", dir: true, size: -1},
+	}
+
+	dir, err := db.Open("/directory")
+	is.True(dir != nil)
+	is.True(err == nil)
+	ents, err := dir.Readdir(-1)
+	is.Equal(expected, ents)
+
+	// Check sub-subdirectory
+	dir, err = db.Open("/directory/subdirectory")
+	is.True(dir != nil)
+	is.True(err == nil)
+	ents, err = dir.Readdir(-1)
+	is.True(err == nil)
+	is.Equal([]os.FileInfo{FI{name: "hello", size: len(helloworld)}}, ents)
+}

v2/internal/bind/bind.go

@@ -0,0 +1,9 @@
+package bind
+
+func IsStructPointer(value interface{}) bool {
+	switch t := value.(type) {
+	default:
+		println(t)
+	}
+	return false
+}

v2/internal/binding/binding.go

@@ -0,0 +1,70 @@
+package binding
+
+import (
+	"fmt"
+	"strings"
+
+	"github.com/wailsapp/wails/v2/internal/logger"
+)
+
+type Bindings struct {
+	db     *DB
+	logger logger.CustomLogger
+}
+
+// NewBindings returns a new Bindings object
+func NewBindings(logger *logger.Logger) *Bindings {
+	return &Bindings{
+		db:     newDB(),
+		logger: logger.CustomLogger("Bindings"),
+	}
+}
+
+// Add the given struct methods to the Bindings
+func (b *Bindings) Add(structPtr interface{}) error {
+
+	methods, err := getMethods(structPtr)
+	if err != nil {
+		return fmt.Errorf("cannout bind value to app: %s", err.Error())
+	}
+
+	for _, method := range methods {
+		splitName := strings.Split(method.Name, ".")
+		packageName := splitName[0]
+		structName := splitName[1]
+		methodName := splitName[2]
+
+		// Is this WailsInit?
+		if method.IsWailsInit() {
+			err := b.db.AddWailsInit(method)
+			if err != nil {
+				return err
+			}
+			b.logger.Trace("Registered WailsInit method: %s", method.Name)
+			continue
+		}
+
+		// Is this WailsShutdown?
+		if method.IsWailsShutdown() {
+			err := b.db.AddWailsShutdown(method)
+			if err != nil {
+				return err
+			}
+			b.logger.Trace("Registered WailsShutdown method: %s", method.Name)
+			continue
+		}
+
+		// Add it as a regular method
+		b.db.AddMethod(packageName, structName, methodName, method)
+
+	}
+	return nil
+}
+
+func (b *Bindings) DB() *DB {
+	return b.db
+}
+
+func (b *Bindings) ToJSON() (string, error) {
+	return b.db.ToJSON()
+}

v2/internal/binding/boundMethod.go

@@ -0,0 +1,150 @@
+package binding
+
+import (
+	"encoding/json"
+	"fmt"
+	"reflect"
+	"strings"
+)
+
+// BoundMethod defines all the data related to a Go method that is
+// bound to the Wails application
+type BoundMethod struct {
+	Name     string        `json:"name"`
+	Inputs   []*Parameter  `json:"inputs,omitempty"`
+	Outputs  []*Parameter  `json:"outputs,omitempty"`
+	Comments string        `json:"comments,omitempty"`
+	Method   reflect.Value `json:"-"`
+}
+
+// IsWailsInit returns true if the method name is "WailsInit"
+func (b *BoundMethod) IsWailsInit() bool {
+	return strings.HasSuffix(b.Name, "WailsInit")
+}
+
+// IsWailsShutdown returns true if the method name is "WailsShutdown"
+func (b *BoundMethod) IsWailsShutdown() bool {
+	return strings.HasSuffix(b.Name, "WailsShutdown")
+}
+
+// VerifyWailsInit checks if the WailsInit signature is correct
+func (b *BoundMethod) VerifyWailsInit() error {
+	// Must only have 1 input
+	if b.InputCount() != 1 {
+		return fmt.Errorf("invalid method signature for %s: expected `WailsInit(*wails.Runtime) error`", b.Name)
+	}
+
+	// Check input type
+	if !b.Inputs[0].IsType("*runtime.Runtime") {
+		return fmt.Errorf("invalid method signature for %s: expected `WailsInit(*wails.Runtime) error`", b.Name)
+	}
+
+	// Must only have 1 output
+	if b.OutputCount() != 1 {
+		return fmt.Errorf("invalid method signature for %s: expected `WailsInit(*wails.Runtime) error`", b.Name)
+	}
+
+	// Check output type
+	if !b.Outputs[0].IsError() {
+		return fmt.Errorf("invalid method signature for %s: expected `WailsInit(*wails.Runtime) error`", b.Name)
+	}
+
+	// Input must be of type Runtime
+	return nil
+}
+
+// VerifyWailsShutdown checks if the WailsShutdown signature is correct
+func (b *BoundMethod) VerifyWailsShutdown() error {
+	// Must have no inputs
+	if b.InputCount() != 0 {
+		return fmt.Errorf("invalid method signature for WailsShutdown: expected `WailsShutdown()`")
+	}
+
+	// Must have no outputs
+	if b.OutputCount() != 0 {
+		return fmt.Errorf("invalid method signature for WailsShutdown: expected `WailsShutdown()`")
+	}
+
+	// Input must be of type Runtime
+	return nil
+}
+
+// InputCount returns the number of inputs this bound method has
+func (b *BoundMethod) InputCount() int {
+	return len(b.Inputs)
+}
+
+// OutputCount returns the number of outputs this bound method has
+func (b *BoundMethod) OutputCount() int {
+	return len(b.Outputs)
+}
+
+// ParseArgs method converts the input json into the types expected by the method
+func (b *BoundMethod) ParseArgs(args []json.RawMessage) ([]interface{}, error) {
+
+	result := make([]interface{}, b.InputCount())
+	for index, arg := range args {
+		typ := b.Inputs[index].reflectType
+		inputValue := reflect.New(typ).Interface()
+		err := json.Unmarshal(arg, inputValue)
+		if err != nil {
+			return nil, err
+		}
+		if inputValue == nil {
+			result[index] = reflect.Zero(typ).Interface()
+		} else {
+			result[index] = reflect.ValueOf(inputValue).Elem().Interface()
+		}
+	}
+	return result, nil
+}
+
+// Call will attempt to call this bound method with the given args
+func (b *BoundMethod) Call(args []interface{}) (interface{}, error) {
+	// Check inputs
+	expectedInputLength := len(b.Inputs)
+	actualInputLength := len(args)
+	if expectedInputLength != actualInputLength {
+		return nil, fmt.Errorf("%s takes %d inputs. Received %d", b.Name, expectedInputLength, actualInputLength)
+	}
+
+	/** Convert inputs to reflect values **/
+
+	// Create slice for the input arguments to the method call
+	callArgs := make([]reflect.Value, expectedInputLength)
+
+	// Iterate over given arguments
+	for index, arg := range args {
+		// Save the converted argument
+		callArgs[index] = reflect.ValueOf(arg)
+	}
+
+	// Do the call
+	callResults := b.Method.Call(callArgs)
+
+	//** Check results **//
+	var returnValue interface{}
+	var err error
+
+	switch b.OutputCount() {
+	case 1:
+		// Loop over results and determine if the result
+		// is an error or not
+		for _, result := range callResults {
+			interfac := result.Interface()
+			temp, ok := interfac.(error)
+			if ok {
+				err = temp
+			} else {
+				returnValue = interfac
+			}
+		}
+	case 2:
+		returnValue = callResults[0].Interface()
+		if temp, ok := callResults[1].Interface().(error); ok {
+			err = temp
+		}
+	}
+
+	return returnValue, err
+}

v2/internal/binding/db.go

@@ -0,0 +1,150 @@
+package binding
+
+import (
+	"encoding/json"
+	"sync"
+	"unsafe"
+)
+
+// DB is our database of method bindings
+type DB struct {
+	//  map[packagename] -> map[structname] -> map[methodname]*method
+	store map[string]map[string]map[string]*BoundMethod
+
+	// This uses fully qualified method names as a shortcut for store traversal.
+	// It used for performance gains at runtime
+	methodMap map[string]*BoundMethod
+
+	// These are slices of methods registered using WailsInit and WailsShutdown
+	wailsInitMethods     []*BoundMethod
+	wailsShutdownMethods []*BoundMethod
+
+	// Lock to ensure sync access to the data
+	lock sync.RWMutex
+}
+
+func newDB() *DB {
+	return &DB{
+		store:     make(map[string]map[string]map[string]*BoundMethod),
+		methodMap: make(map[string]*BoundMethod),
+	}
+}
+
+// GetMethodFromStore returns the method for the given package/struct/method names
+// nil is returned if any one of those does not exist
+func (d *DB) GetMethodFromStore(packageName string, structName string, methodName string) *BoundMethod {
+
+	// Lock the db whilst processing and unlock on return
+	d.lock.RLock()
+	defer d.lock.RUnlock()
+
+	structMap, exists := d.store[packageName]
+	if !exists {
+		return nil
+	}
+	methodMap, exists := structMap[structName]
+	if !exists {
+		return nil
+	}
+	return methodMap[methodName]
+}
+
+// GetMethod returns the method for the given qualified method name
+// qualifiedMethodName is "packagename.structname.methodname"
+func (d *DB) GetMethod(qualifiedMethodName string) *BoundMethod {
+
+	// Lock the db whilst processing and unlock on return
+	d.lock.RLock()
+	defer d.lock.RUnlock()
+
+	return d.methodMap[qualifiedMethodName]
+}
+
+// AddMethod adds the given method definition to the db using the given qualified path: packageName.structName.methodName
+func (d *DB) AddMethod(packageName string, structName string, methodName string, methodDefinition *BoundMethod) {
+
+	// TODO: Validate inputs?
+
+	// Lock the db whilst processing and unlock on return
+	d.lock.Lock()
+	defer d.lock.Unlock()
+
+	// Get the map associated with the package name
+	structMap, exists := d.store[packageName]
+	if !exists {
+		// Create a new map for this packagename
+		d.store[packageName] = make(map[string]map[string]*BoundMethod)
+		structMap = d.store[packageName]
+	}
+
+	// Get the map associated with the struct name
+	methodMap, exists := structMap[structName]
+	if !exists {
+		// Create a new map for this packagename
+		structMap[structName] = make(map[string]*BoundMethod)
+		methodMap = structMap[structName]
+	}
+
+	// Store the method definition
+	methodMap[methodName] = methodDefinition
+
+	// Store in the methodMap
+	key := packageName + "." + structName + "." + methodName
+	d.methodMap[key] = methodDefinition
+
+}
+
+// AddWailsInit checks the given method is a WailsInit method and if it
+// is, adds it to the list of WailsInit methods
+func (d *DB) AddWailsInit(method *BoundMethod) error {
+	err := method.VerifyWailsInit()
+	if err != nil {
+		return err
+	}
+
+	// Lock the db whilst processing and unlock on return
+	d.lock.Lock()
+	defer d.lock.Unlock()
+
+	d.wailsInitMethods = append(d.wailsInitMethods, method)
+	return nil
+}
+
+// AddWailsShutdown checks the given method is a WailsInit method and if it
+// is, adds it to the list of WailsShutdown methods
+func (d *DB) AddWailsShutdown(method *BoundMethod) error {
+	err := method.VerifyWailsShutdown()
+	if err != nil {
+		return err
+	}
+
+	// Lock the db whilst processing and unlock on return
+	d.lock.Lock()
+	defer d.lock.Unlock()
+
+	d.wailsShutdownMethods = append(d.wailsShutdownMethods, method)
+	return nil
+}
+
+// ToJSON converts the method map to JSON
+func (d *DB) ToJSON() (string, error) {
+
+	// Lock the db whilst processing and unlock on return
+	d.lock.RLock()
+	defer d.lock.RUnlock()
+
+	bytes, err := json.Marshal(&d.store)
+
+	// Return zero copy string as this string will be read only
+	return *(*string)(unsafe.Pointer(&bytes)), err
+}
+
+// WailsInitMethods returns the list of registered WailsInit methods
+func (d *DB) WailsInitMethods() []*BoundMethod {
+	return d.wailsInitMethods
+}
+
+// WailsShutdownMethods returns the list of registered WailsInit methods
+func (d *DB) WailsShutdownMethods() []*BoundMethod {
+	return d.wailsShutdownMethods
+}

v2/internal/binding/parameter.go

@@ -0,0 +1,28 @@
+package binding
+
+import "reflect"
+
+// Parameter defines a Go method parameter
+type Parameter struct {
+	Name        string `json:"name,omitempty"`
+	TypeName    string `json:"type"`
+	reflectType reflect.Type
+}
+
+func newParameter(Name string, Type reflect.Type) *Parameter {
+	return &Parameter{
+		Name:        Name,
+		TypeName:    Type.String(),
+		reflectType: Type,
+	}
+}
+
+// IsType returns true if the given
+func (p *Parameter) IsType(typename string) bool {
+	return p.TypeName == typename
+}
+
+// IsError returns true if the parameter type is an error
+func (p *Parameter) IsError() bool {
+	return p.IsType("error")
+}

v2/internal/binding/reflect.go

@@ -0,0 +1,123 @@
+package binding
+
+import (
+	"encoding/json"
+	"fmt"
+	"reflect"
+)
+
+// isStructPtr returns true if the value given is a
+// pointer to a struct
+func isStructPtr(value interface{}) bool {
+	return reflect.ValueOf(value).Kind() == reflect.Ptr &&
+		reflect.ValueOf(value).Elem().Kind() == reflect.Struct
+}
+
+// isStructPtr returns true if the value given is a struct
+func isStruct(value interface{}) bool {
+	return reflect.ValueOf(value).Kind() == reflect.Struct
+}
+
+func getMethods(value interface{}) ([]*BoundMethod, error) {
+
+	// Create result placeholder
+	var result []*BoundMethod
+
+	// Check type
+	if !isStructPtr(value) {
+
+		if isStruct(value) {
+			name := reflect.ValueOf(value).Type().Name()
+			return nil, fmt.Errorf("%s is a struct, not a pointer to a struct", name)
+		}
+
+		return nil, fmt.Errorf("not a pointer to a struct")
+	}
+
+	// Process Struct
+	structType := reflect.TypeOf(value)
+	structValue := reflect.ValueOf(value)
+	baseName := structType.String()[1:]
+
+	// Process Methods
+	for i := 0; i < structType.NumMethod(); i++ {
+		methodDef := structType.Method(i)
+		methodName := methodDef.Name
+		fullMethodName := baseName + "." + methodName
+		method := structValue.MethodByName(methodName)
+
+		// Create new method
+		boundMethod := &BoundMethod{
+			Name:     fullMethodName,
+			Inputs:   nil,
+			Outputs:  nil,
+			Comments: "",
+			Method:   method,
+		}
+
+		// Iterate inputs
+		methodType := method.Type()
+		inputParamCount := methodType.NumIn()
+		var inputs []*Parameter
+		for inputIndex := 0; inputIndex < inputParamCount; inputIndex++ {
+			input := methodType.In(inputIndex)
+			thisParam := newParameter("", input)
+			inputs = append(inputs, thisParam)
+		}
+
+		boundMethod.Inputs = inputs
+
+		// Iterate outputs
+		// TODO: Determine what to do about limiting return types
+		//       especially around errors.
+		outputParamCount := methodType.NumOut()
+		var outputs []*Parameter
+		for outputIndex := 0; outputIndex < outputParamCount; outputIndex++ {
+			output := methodType.Out(outputIndex)
+			thisParam := newParameter("", output)
+			outputs = append(outputs, thisParam)
+		}
+		boundMethod.Outputs = outputs
+
+		// Save method in result
+		result = append(result, boundMethod)
+
+	}
+	return result, nil
+}
+
+// convertArgToValue
+func convertArgToValue(input json.RawMessage, target *Parameter) (result reflect.Value, err error) {
+
+	// Catch type conversion panics thrown by convert
+	defer func() {
+		if r := recover(); r != nil {
+			// Modify error
+			err = fmt.Errorf("%s", r.(string)[23:])
+		}
+	}()
+
+	// Do the conversion
+
+	// Handle nil values
+	if input == nil {
+		switch target.reflectType.Kind() {
+		case reflect.Chan,
+			reflect.Func,
+			reflect.Interface,
+			reflect.Map,
+			reflect.Ptr,
+			reflect.Slice:
+			result = reflect.ValueOf(input).Convert(target.reflectType)
+		default:
+			return reflect.Zero(target.reflectType), fmt.Errorf("Unable to use null value")
+		}
+	} else {
+		result = reflect.ValueOf(input).Convert(target.reflectType)
+	}
+
+	// We don't like doing this but it's the only way to
+	// handle recover() correctly
+	return
+
+}

v2/internal/crypto/crypto.go

@@ -0,0 +1,17 @@
+package crypto
+
+import (
+	"crypto/rand"
+	"fmt"
+	"log"
+)
+
+// RandomID returns a random ID as a string
+func RandomID() string {
+	b := make([]byte, 16)
+	_, err := rand.Read(b)
+	if err != nil {
+		log.Fatal(err)
+	}
+	return fmt.Sprintf("%x", b)
+}

v2/internal/ffenestri/ffenestri.go

@@ -0,0 +1,181 @@
+package ffenestri
+
+import (
+	"runtime"
+	"strings"
+	"unsafe"
+
+	"github.com/wailsapp/wails/v2/internal/logger"
+	"github.com/wailsapp/wails/v2/internal/messagedispatcher"
+	"github.com/wailsapp/wails/v2/pkg/options"
+)
+
+/*
+
+#cgo linux CFLAGS: -DFFENESTRI_LINUX=1
+#cgo linux pkg-config: gtk+-3.0 webkit2gtk-4.0
+
+#cgo darwin CFLAGS: -DFFENESTRI_DARWIN=1
+#cgo darwin LDFLAGS: -framework WebKit -lobjc
+
+#include <stdlib.h>
+#include "ffenestri.h"
+
+
+*/
+import "C"
+
+// DEBUG is the global Ffenestri debug flag.
+// TODO: move to compile time.
+var DEBUG bool = true
+
+// Application is our main application object
+type Application struct {
+	config *options.App
+	memory []unsafe.Pointer
+
+	// This is the main app pointer
+	app unsafe.Pointer
+
+	// Logger
+	logger logger.CustomLogger
+}
+
+func (a *Application) saveMemoryReference(mem unsafe.Pointer) {
+	a.memory = append(a.memory, mem)
+}
+
+func (a *Application) string2CString(str string) *C.char {
+	result := C.CString(str)
+	a.saveMemoryReference(unsafe.Pointer(result))
+	return result
+}
+
+func init() {
+	runtime.LockOSThread()
+}
+
+// NewApplicationWithConfig creates a new application based on the given config
+func NewApplicationWithConfig(config *options.App, logger *logger.Logger) *Application {
+	return &Application{
+		config: config,
+		logger: logger.CustomLogger("Ffenestri"),
+	}
+}
+
+// NewApplication creates a new Application with the default config
+func NewApplication(logger *logger.Logger) *Application {
+	return &Application{
+		config: options.Default,
+		logger: logger.CustomLogger("Ffenestri"),
+	}
+}
+
+func (a *Application) freeMemory() {
+	for _, mem := range a.memory {
+		// fmt.Printf("Freeing memory: %+v\n", mem)
+		C.free(mem)
+	}
+}
+
+// bool2Cint converts a Go boolean to a C integer
+func (a *Application) bool2Cint(value bool) C.int {
+	if value {
+		return C.int(1)
+	}
+	return C.int(0)
+}
+
+// dispatcher is the interface to send messages to
+var dispatcher *messagedispatcher.DispatchClient
+
+// Dispatcher is what we register out client with
+type Dispatcher interface {
+	RegisterClient(client messagedispatcher.Client) *messagedispatcher.DispatchClient
+}
+
+// DispatchClient is the means for passing messages to the backend
+type DispatchClient interface {
+	SendMessage(string)
+}
+
+func intToColour(colour int) (C.int, C.int, C.int, C.int) {
+	var alpha = C.int(colour & 0xFF)
+	var blue = C.int((colour >> 8) & 0xFF)
+	var green = C.int((colour >> 16) & 0xFF)
+	var red = C.int((colour >> 24) & 0xFF)
+	return red, green, blue, alpha
+}
+
+// Run the application
+func (a *Application) Run(incomingDispatcher Dispatcher, bindings string) error {
+	title := a.string2CString(a.config.Title)
+	width := C.int(a.config.Width)
+	height := C.int(a.config.Height)
+	resizable := a.bool2Cint(!a.config.DisableResize)
+	devtools := a.bool2Cint(a.config.DevTools)
+	fullscreen := a.bool2Cint(a.config.Fullscreen)
+	startHidden := a.bool2Cint(a.config.StartHidden)
+	logLevel := C.int(a.config.LogLevel)
+	app := C.NewApplication(title, width, height, resizable, devtools, fullscreen, startHidden, logLevel)
+
+	// Save app reference
+	a.app = unsafe.Pointer(app)
+
+	// Set Min Window Size
+	minWidth := C.int(a.config.MinWidth)
+	minHeight := C.int(a.config.MinHeight)
+	C.SetMinWindowSize(a.app, minWidth, minHeight)
+
+	// Set Max Window Size
+	maxWidth := C.int(a.config.MaxWidth)
+	maxHeight := C.int(a.config.MaxHeight)
+	C.SetMaxWindowSize(a.app, maxWidth, maxHeight)
+
+	// Set debug if needed
+	C.SetDebug(app, a.bool2Cint(DEBUG))
+
+	// TODO: Move frameless to Linux options
+	// if a.config.Frameless {
+	// 	C.DisableFrame(a.app)
+	// }
+
+	if a.config.RGBA != 0 {
+		r, g, b, alpha := intToColour(a.config.RGBA)
+		C.SetColour(a.app, r, g, b, alpha)
+	}
+
+	// Escape bindings so C doesn't freak out
+	bindings = strings.ReplaceAll(bindings, `"`, `\"`)
+
+	// Set bindings
+	C.SetBindings(app, a.string2CString(bindings))
+
+	// save the dispatcher in a package variable so that the C callbacks
+	// can access it
+	dispatcher = incomingDispatcher.RegisterClient(newClient(a))
+
+	// Process platform settings
+	a.processPlatformSettings()
+
+	// Check we could initialise the application
+	if app != nil {
+		// Yes - Save memory reference and run app, cleaning up afterwards
+		a.saveMemoryReference(unsafe.Pointer(app))
+		C.Run(app, 0, nil)
+	} else {
+		// Oh no! We couldn't initialise the application
+		a.logger.Fatal("Cannot initialise Application.")
+	}
+
+	a.freeMemory()
+	return nil
+}
+
+// messageFromWindowCallback is called by any messages sent in
+// webkit to window.external.invoke. It relays the message on to
+// the dispatcher.
+//export messageFromWindowCallback
+func messageFromWindowCallback(data *C.char) {
+	dispatcher.DispatchMessage(C.GoString(data))
+}

v2/internal/ffenestri/ffenestri.h

@@ -0,0 +1,35 @@
+#ifndef __FFENESTRI_H__
+#define __FFENESTRI_H__
+
+#include <stdio.h>
+
+extern void *NewApplication(const char *title, int width, int height, int resizable, int devtools, int fullscreen, int startHidden, int logLevel);
+extern void SetMinWindowSize(void *app, int minWidth, int minHeight);
+extern void SetMaxWindowSize(void *app, int maxWidth, int maxHeight);
+extern void Run(void *app, int argc, char **argv);
+extern void DestroyApplication(void *app);
+extern void SetDebug(void *app, int flag);
+extern void SetBindings(void *app, const char *bindings);
+extern void ExecJS(void *app, const char *script);
+extern void Hide(void *app);
+extern void Show(void *app);
+extern void Center(void *app);
+extern void Maximise(void *app);
+extern void Unmaximise(void *app);
+extern void ToggleMaximise(void *app);
+extern void Minimise(void *app);
+extern void Unminimise(void *app);
+extern void ToggleMinimise(void *app);
+extern void SetColour(void *app, int red, int green, int blue, int alpha);
+extern void SetSize(void *app, int width, int height);
+extern void SetPosition(void *app, int x, int y);
+extern void Quit(void *app);
+extern void SetTitle(void *app, const char *title);
+extern void Fullscreen(void *app);
+extern void UnFullscreen(void *app);
+extern void ToggleFullscreen(void *app);
+extern void DisableFrame(void *app);
+extern void OpenDialog(void *appPointer, char *callbackID, char *title, char *filters, char *defaultFilename, char *defaultDir, int allowFiles, int allowDirs, int allowMultiple, int showHiddenFiles, int canCreateDirectories, int resolveAliases, int treatPackagesAsDirectories);
+extern void SaveDialog(void *appPointer, char *callbackID, char *title, char *filters, char *defaultFilename, char *defaultDir, int showHiddenFiles, int canCreateDirectories, int treatPackagesAsDirectories);
+extern void DarkModeEnabled(void *appPointer, char *callbackID);
+#endif

v2/internal/ffenestri/ffenestri_client.go

@@ -0,0 +1,156 @@
+package ffenestri
+
+/*
+
+#cgo linux CFLAGS: -DFFENESTRI_LINUX=1
+#cgo linux pkg-config: gtk+-3.0 webkit2gtk-4.0
+
+#include <stdlib.h>
+#include "ffenestri.h"
+
+*/
+import "C"
+
+import (
+	"strconv"
+
+	"github.com/wailsapp/wails/v2/internal/logger"
+	"github.com/wailsapp/wails/v2/pkg/options"
+)
+
+// Client is our implentation of messageDispatcher.Client
+type Client struct {
+	app    *Application
+	logger logger.CustomLogger
+}
+
+func newClient(app *Application) *Client {
+	return &Client{
+		app:    app,
+		logger: app.logger,
+	}
+}
+
+// Quit the application
+func (c *Client) Quit() {
+	c.app.logger.Trace("Got shutdown message")
+	C.Quit(c.app.app)
+}
+
+// NotifyEvent will pass on the event message to the frontend
+func (c *Client) NotifyEvent(message string) {
+	eventMessage := `window.wails._.Notify(` + strconv.Quote(message) + `);`
+	c.app.logger.Trace("eventMessage = %+v", eventMessage)
+	C.ExecJS(c.app.app, c.app.string2CString(eventMessage))
+}
+
+// CallResult contains the result of the call from JS
+func (c *Client) CallResult(message string) {
+	callbackMessage := `window.wails._.Callback(` + strconv.Quote(message) + `);`
+	c.app.logger.Trace("callbackMessage = %+v", callbackMessage)
+	C.ExecJS(c.app.app, c.app.string2CString(callbackMessage))
+}
+
+// WindowSetTitle sets the window title to the given string
+func (c *Client) WindowSetTitle(title string) {
+	C.SetTitle(c.app.app, c.app.string2CString(title))
+}
+
+// WindowFullscreen will set the window to be fullscreen
+func (c *Client) WindowFullscreen() {
+	C.Fullscreen(c.app.app)
+}
+
+// WindowUnFullscreen will unfullscreen the window
+func (c *Client) WindowUnFullscreen() {
+	C.UnFullscreen(c.app.app)
+}
+
+// WindowShow will show the window
+func (c *Client) WindowShow() {
+	C.Show(c.app.app)
+}
+
+// WindowHide will hide the window
+func (c *Client) WindowHide() {
+	C.Hide(c.app.app)
+}
+
+// WindowCenter will hide the window
+func (c *Client) WindowCenter() {
+	C.Center(c.app.app)
+}
+
+// WindowMaximise will maximise the window
+func (c *Client) WindowMaximise() {
+	C.Maximise(c.app.app)
+}
+
+// WindowMinimise will minimise the window
+func (c *Client) WindowMinimise() {
+	C.Minimise(c.app.app)
+}
+
+// WindowUnmaximise will unmaximise the window
+func (c *Client) WindowUnmaximise() {
+	C.Unmaximise(c.app.app)
+}
+
+// WindowUnminimise will unminimise the window
+func (c *Client) WindowUnminimise() {
+	C.Unminimise(c.app.app)
+}
+
+// WindowPosition will position the window to x,y on the
+// monitor that the window is mostly on
+func (c *Client) WindowPosition(x int, y int) {
+	C.SetPosition(c.app.app, C.int(x), C.int(y))
+}
+
+// WindowSize will resize the window to the given
+// width and height
+func (c *Client) WindowSize(width int, height int) {
+	C.SetSize(c.app.app, C.int(width), C.int(height))
+}
+
+// WindowSetColour sets the window colour
+func (c *Client) WindowSetColour(colour int) {
+	r, g, b, a := intToColour(colour)
+	C.SetColour(c.app.app, r, g, b, a)
+}
+
+// OpenDialog will open a dialog with the given title and filter
+func (c *Client) OpenDialog(dialogOptions *options.OpenDialog, callbackID string) {
+	C.OpenDialog(c.app.app,
+		c.app.string2CString(callbackID),
+		c.app.string2CString(dialogOptions.Title),
+		c.app.string2CString(dialogOptions.Filters),
+		c.app.string2CString(dialogOptions.DefaultFilename),
+		c.app.string2CString(dialogOptions.DefaultDirectory),
+		c.app.bool2Cint(dialogOptions.AllowFiles),
+		c.app.bool2Cint(dialogOptions.AllowDirectories),
+		c.app.bool2Cint(dialogOptions.AllowMultiple),
+		c.app.bool2Cint(dialogOptions.ShowHiddenFiles),
+		c.app.bool2Cint(dialogOptions.CanCreateDirectories),
+		c.app.bool2Cint(dialogOptions.ResolveAliases),
+		c.app.bool2Cint(dialogOptions.TreatPackagesAsDirectories),
+	)
+}
+
+// SaveDialog will open a dialog with the given title and filter
+func (c *Client) SaveDialog(dialogOptions *options.SaveDialog, callbackID string) {
+	C.SaveDialog(c.app.app,
+		c.app.string2CString(callbackID),
+		c.app.string2CString(dialogOptions.Title),
+		c.app.string2CString(dialogOptions.Filters),
+		c.app.string2CString(dialogOptions.DefaultFilename),
+		c.app.string2CString(dialogOptions.DefaultDirectory),
+		c.app.bool2Cint(dialogOptions.ShowHiddenFiles),
+		c.app.bool2Cint(dialogOptions.CanCreateDirectories),
+		c.app.bool2Cint(dialogOptions.TreatPackagesAsDirectories),
+	)
+}
+
+func (c *Client) DarkModeEnabled(callbackID string) {
+	C.DarkModeEnabled(c.app.app, c.app.string2CString(callbackID))
+}

v2/internal/ffenestri/ffenestri_darwin.go

@@ -0,0 +1,67 @@
+package ffenestri
+
+/*
+#cgo darwin CFLAGS: -DFFENESTRI_DARWIN=1
+#cgo darwin LDFLAGS: -framework WebKit -lobjc
+
+extern void TitlebarAppearsTransparent(void *);
+extern void HideTitle(void *);
+extern void HideTitleBar(void *);
+extern void FullSizeContent(void *);
+extern void UseToolbar(void *);
+extern void HideToolbarSeparator(void *);
+extern void DisableFrame(void *);
+extern void SetAppearance(void *, const char *);
+extern void WebviewIsTransparent(void *);
+extern void SetWindowBackgroundIsTranslucent(void *);
+*/
+import "C"
+
+func (a *Application) processPlatformSettings() {
+
+	mac := a.config.Mac
+	titlebar := mac.TitleBar
+
+	// HideTitle
+	if titlebar.HideTitle {
+		C.HideTitle(a.app)
+	}
+
+	// HideTitleBar
+	if titlebar.HideTitleBar {
+		C.HideTitleBar(a.app)
+	}
+
+	// Full Size Content
+	if titlebar.FullSizeContent {
+		C.FullSizeContent(a.app)
+	}
+
+	// Toolbar
+	if titlebar.UseToolbar {
+		C.UseToolbar(a.app)
+	}
+
+	if titlebar.HideToolbarSeparator {
+		C.HideToolbarSeparator(a.app)
+	}
+
+	if titlebar.TitlebarAppearsTransparent {
+		C.TitlebarAppearsTransparent(a.app)
+	}
+
+	// Process window Appearance
+	if mac.Appearance != "" {
+		C.SetAppearance(a.app, a.string2CString(string(mac.Appearance)))
+	}
+
+	// Check if the webview should be transparent
+	if mac.WebviewIsTransparent {
+		C.WebviewIsTransparent(a.app)
+	}
+
+	// Check if window should be translucent
+	if mac.WindowBackgroundIsTranslucent {
+		C.SetWindowBackgroundIsTranslucent(a.app)
+	}
+}

v2/internal/ffenestri/ffenestri_linux.c

@@ -0,0 +1,984 @@
+
+#ifndef __FFENESTRI_LINUX_H__
+#define __FFENESTRI_LINUX_H__
+
+#include "gtk/gtk.h"
+#include "webkit2/webkit2.h"
+#include <time.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <string.h>
+#include <stdarg.h>
+
+// References to assets
+extern const unsigned char *assets[];
+extern const unsigned char runtime;
+extern const char *icon[];
+
+// Constants
+#define PRIMARY_MOUSE_BUTTON 1
+#define MIDDLE_MOUSE_BUTTON 2
+#define SECONDARY_MOUSE_BUTTON 3
+
+// MAIN DEBUG FLAG
+int debug;
+
+// Credit: https://stackoverflow.com/a/8465083
+char *concat(const char *s1, const char *s2)
+{
+    const size_t len1 = strlen(s1);
+    const size_t len2 = strlen(s2);
+    char *result = malloc(len1 + len2 + 1);
+    memcpy(result, s1, len1);
+    memcpy(result + len1, s2, len2 + 1);
+    return result;
+}
+
+// Debug works like sprintf but mutes if the global debug flag is true
+// Credit: https://stackoverflow.com/a/20639708
+void Debug(char *message, ...)
+{
+    if (debug)
+    {
+        char *temp = concat("TRACE | Ffenestri (C) | ", message);
+        message = concat(temp, "\n");
+        free(temp);
+        va_list args;
+        va_start(args, message);
+        vprintf(message, args);
+        free(message);
+        va_end(args);
+    }
+}
+
+extern void messageFromWindowCallback(const char *);
+typedef void (*ffenestriCallback)(const char *);
+
+struct Application
+{
+
+    // Gtk Data
+    GtkApplication *application;
+    GtkWindow *mainWindow;
+    GtkWidget *webView;
+    int signalInvoke;
+    int signalWindowDrag;
+    int signalButtonPressed;
+    int signalButtonReleased;
+    int signalLoadChanged;
+
+    // Saves the events for the drag mouse button
+    GdkEventButton *dragButtonEvent;
+
+    // The number of the default drag button
+    int dragButton;
+
+    // Window Data
+    const char *title;
+    char *id;
+    int width;
+    int height;
+    int resizable;
+    int devtools;
+    int startHidden;
+    int fullscreen;
+    int minWidth;
+    int minHeight;
+    int maxWidth;
+    int maxHeight;
+    int frame;
+
+    // User Data
+    char *HTML;
+
+    // Callback
+    ffenestriCallback sendMessageToBackend;
+
+    // Bindings
+    const char *bindings;
+
+    // Lock - used for sync operations (Should we be using g_mutex?)
+    int lock;
+};
+
+void *NewApplication(const char *title, int width, int height, int resizable, int devtools, int fullscreen, int startHidden)
+{
+    // Setup main application struct
+    struct Application *result = malloc(sizeof(struct Application));
+    result->title = title;
+    result->width = width;
+    result->height = height;
+    result->resizable = resizable;
+    result->devtools = devtools;
+    result->fullscreen = fullscreen;
+    result->minWidth = 0;
+    result->minHeight = 0;
+    result->maxWidth = 0;
+    result->maxHeight = 0;
+    result->frame = 1;
+    result->startHidden = startHidden;
+
+    // Default drag button is PRIMARY
+    result->dragButton = PRIMARY_MOUSE_BUTTON;
+
+    result->sendMessageToBackend = (ffenestriCallback)messageFromWindowCallback;
+
+    // Create a unique ID based on the current unix timestamp
+    char temp[11];
+    sprintf(&temp[0], "%d", (int)time(NULL));
+    result->id = concat("wails.app", &temp[0]);
+
+    // Create the main GTK application
+    GApplicationFlags flags = G_APPLICATION_FLAGS_NONE;
+    result->application = gtk_application_new(result->id, flags);
+
+    // Return the application struct
+    return (void *)result;
+}
+
+void DestroyApplication(struct Application *app)
+{
+    Debug("Destroying Application");
+
+    g_application_quit(G_APPLICATION(app->application));
+
+    // Release the GTK ID string
+    if (app->id != NULL)
+    {
+        free(app->id);
+        app->id = NULL;
+    }
+    else
+    {
+        Debug("Almost a double free for app->id");
+    }
+
+    // Free the bindings
+    if (app->bindings != NULL)
+    {
+        free((void *)app->bindings);
+        app->bindings = NULL;
+    }
+    else
+    {
+        Debug("Almost a double free for app->bindings");
+    }
+
+    // Disconnect signal handlers
+    WebKitUserContentManager *manager = webkit_web_view_get_user_content_manager((WebKitWebView *)app->webView);
+    g_signal_handler_disconnect(manager, app->signalInvoke);
+    if( app->frame == 0) {
+        g_signal_handler_disconnect(manager, app->signalWindowDrag);
+        g_signal_handler_disconnect(app->webView, app->signalButtonPressed);
+        g_signal_handler_disconnect(app->webView, app->signalButtonReleased);
+    }
+    g_signal_handler_disconnect(app->webView, app->signalLoadChanged);
+
+    // Release the main GTK Application
+    if (app->application != NULL)
+    {
+        g_object_unref(app->application);
+        app->application = NULL;
+    }
+    else
+    {
+        Debug("Almost a double free for app->application");
+    }
+    Debug("Finished Destroying Application");
+}
+
+// Quit will stop the gtk application and free up all the memory
+// used by the application
+void Quit(struct Application *app)
+{
+    Debug("Quit Called");
+    gtk_window_close((GtkWindow *)app->mainWindow);
+    g_application_quit((GApplication *)app->application);
+    DestroyApplication(app);
+}
+
+// SetTitle sets the main window title to the given string
+void SetTitle(struct Application *app, const char *title)
+{
+    gtk_window_set_title(app->mainWindow, title);
+}
+
+// Fullscreen sets the main window to be fullscreen
+void Fullscreen(struct Application *app)
+{
+    gtk_window_fullscreen(app->mainWindow);
+}
+
+// UnFullscreen resets the main window after a fullscreen
+void UnFullscreen(struct Application *app)
+{
+    gtk_window_unfullscreen(app->mainWindow);
+}
+
+void setMinMaxSize(struct Application *app)
+{
+    GdkGeometry size;
+    size.min_width = size.min_height = size.max_width = size.max_height = 0;
+    int flags = 0;
+    if (app->maxHeight > 0 && app->maxWidth > 0)
+    {
+        size.max_height = app->maxHeight;
+        size.max_width = app->maxWidth;
+        flags |= GDK_HINT_MAX_SIZE;
+    }
+    if (app->minHeight > 0 && app->minWidth > 0)
+    {
+        size.min_height = app->minHeight;
+        size.min_width = app->minWidth;
+        flags |= GDK_HINT_MIN_SIZE;
+    }
+    gtk_window_set_geometry_hints(app->mainWindow, NULL, &size, flags);
+}
+
+char *fileDialogInternal(struct Application *app, GtkFileChooserAction chooserAction, char **args) {
+    GtkFileChooserNative *native;
+    GtkFileChooserAction action = chooserAction;
+    gint res;
+    char *filename;
+
+    char *title = args[0];
+    char *filter = args[1];
+
+    native = gtk_file_chooser_native_new(title,
+                                         app->mainWindow,
+                                         action,
+                                         "_Open",
+                                         "_Cancel");
+
+    GtkFileChooser *chooser = GTK_FILE_CHOOSER(native);
+
+    // If we have filters, process them
+    if (filter[0] != '\0') {
+        GtkFileFilter *file_filter = gtk_file_filter_new();
+        gchar **filters  = g_strsplit(filter, ",", -1);
+        gint i;
+        for(i = 0; filters && filters[i]; i++) {
+            gtk_file_filter_add_pattern(file_filter, filters[i]);
+            // Debug("Adding filter pattern: %s\n", filters[i]);
+        }
+        gtk_file_filter_set_name(file_filter, filter);
+        gtk_file_chooser_add_filter(chooser, file_filter);
+        g_strfreev(filters);
+    }
+
+    res = gtk_native_dialog_run(GTK_NATIVE_DIALOG(native));
+    if (res == GTK_RESPONSE_ACCEPT)
+    {
+        filename = gtk_file_chooser_get_filename(chooser);
+    }
+
+    g_object_unref(native);
+
+    return filename;
+}
+
+// openFileDialogInternal opens a dialog to select a file
+// NOTE: The result is a string that will need to be freed!
+char *openFileDialogInternal(struct Application *app, char **args)
+{
+    return fileDialogInternal(app, GTK_FILE_CHOOSER_ACTION_OPEN, args);
+}
+
+// saveFileDialogInternal opens a dialog to select a file
+// NOTE: The result is a string that will need to be freed!
+char *saveFileDialogInternal(struct Application *app, char **args)
+{
+    return fileDialogInternal(app, GTK_FILE_CHOOSER_ACTION_SAVE, args);
+}
+
+
+// openDirectoryDialogInternal opens a dialog to select a directory
+// NOTE: The result is a string that will need to be freed!
+char *openDirectoryDialogInternal(struct Application *app, char **args)
+{
+    return fileDialogInternal(app, GTK_FILE_CHOOSER_ACTION_SELECT_FOLDER, args);
+}
+
+void SetMinWindowSize(struct Application *app, int minWidth, int minHeight)
+{
+    app->minWidth = minWidth;
+    app->minHeight = minHeight;
+}
+
+void SetMaxWindowSize(struct Application *app, int maxWidth, int maxHeight)
+{
+    app->maxWidth = maxWidth;
+    app->maxHeight = maxHeight;
+}
+
+// SetColour sets the colour of the webview to the given colour string
+int SetColour(struct Application *app, const char *colourString)
+{
+    GdkRGBA rgba;
+    gboolean result = gdk_rgba_parse(&rgba, colourString);
+    if (result == FALSE)
+    {
+        return 0;
+    }
+    // Debug("Setting webview colour to: %s", colourString);
+    webkit_web_view_get_background_color((WebKitWebView *)(app->webView), &rgba);
+    return 1;
+}
+
+// DisableFrame disables the window frame
+void DisableFrame(struct Application *app)
+{
+    app->frame = 0;
+}
+
+void syncCallback(GObject *source_object,
+                  GAsyncResult *res,
+                  void *data)
+{
+    struct Application *app = (struct Application *)data;
+    app->lock = 0;
+}
+
+void syncEval(struct Application *app, const gchar *script)
+{
+
+    WebKitWebView *webView = (WebKitWebView *)(app->webView);
+
+    // wait for lock to free
+    while (app->lock == 1)
+    {
+        g_main_context_iteration(0, true);
+    }
+    // Set lock
+    app->lock = 1;
+
+    webkit_web_view_run_javascript(
+        webView,
+        script,
+        NULL, syncCallback, (void*)app);
+
+    while (app->lock == 1)
+    {
+        g_main_context_iteration(0, true);
+    }
+}
+
+void asyncEval(WebKitWebView *webView, const gchar *script)
+{
+    webkit_web_view_run_javascript(
+        webView,
+        script,
+        NULL, NULL, NULL);
+}
+
+typedef void (*dispatchMethod)(struct Application *app, void *);
+
+struct dispatchData
+{
+    struct Application *app;
+    dispatchMethod method;
+    void *args;
+};
+
+gboolean executeMethod(gpointer data)
+{
+    struct dispatchData *d = (struct dispatchData *)data;
+    (d->method)(d->app, d->args);
+    g_free(d);
+    return FALSE;
+}
+
+void ExecJS(struct Application *app, char *js)
+{
+    struct dispatchData *data = (struct dispatchData *)g_new(struct dispatchData, 1);
+    data->method = (dispatchMethod)syncEval;
+    data->args = js;
+    data->app = app;
+
+    gdk_threads_add_idle(executeMethod, data);
+}
+
+typedef char *(*dialogMethod)(struct Application *app, void *);
+
+struct dialogCall
+{
+    struct Application *app;
+    dialogMethod method;
+    void *args;
+    void *filter;
+    char *result;
+    int done;
+};
+
+gboolean executeMethodWithReturn(gpointer data)
+{
+    struct dialogCall *d = (struct dialogCall *)data;
+
+    d->result = (d->method)(d->app, d->args);
+    d->done = 1;
+    return FALSE;
+}
+
+char *OpenFileDialog(struct Application *app, char *title, char *filter)
+{
+    struct dialogCall *data = (struct dialogCall *)g_new(struct dialogCall, 1);
+    data->result = NULL;
+    data->done = 0;
+    data->method = (dialogMethod)openFileDialogInternal;
+    const char* dialogArgs[]={ title, filter };
+    data->args = dialogArgs;
+    data->app = app;
+
+    gdk_threads_add_idle(executeMethodWithReturn, data);
+
+    while (data->done == 0)
+    {
+        usleep(100000);
+    }
+    g_free(data);
+    return data->result;
+}
+
+char *SaveFileDialog(struct Application *app, char *title, char *filter)
+{
+    struct dialogCall *data = (struct dialogCall *)g_new(struct dialogCall, 1);
+    data->result = NULL;
+    data->done = 0;
+    data->method = (dialogMethod)saveFileDialogInternal;
+    const char* dialogArgs[]={ title, filter };
+    data->args = dialogArgs;
+    data->app = app;
+
+    gdk_threads_add_idle(executeMethodWithReturn, data);
+
+    while (data->done == 0)
+    {
+        usleep(100000);
+    }
+    Debug("Dialog done");
+    Debug("Result = %s\n", data->result);
+
+    g_free(data);
+    // Fingers crossed this wasn't freed by g_free above
+    return data->result;
+}
+
+char *OpenDirectoryDialog(struct Application *app, char *title, char *filter)
+{
+    struct dialogCall *data = (struct dialogCall *)g_new(struct dialogCall, 1);
+    data->result = NULL;
+    data->done = 0;
+    data->method = (dialogMethod)openDirectoryDialogInternal;
+    const char* dialogArgs[]={ title, filter };
+    data->args = dialogArgs;
+    data->app = app;
+
+    gdk_threads_add_idle(executeMethodWithReturn, data);
+
+    while (data->done == 0)
+    {
+        usleep(100000);
+    }
+    Debug("Directory Dialog done");
+    Debug("Result = %s\n", data->result);
+    g_free(data);
+    // Fingers crossed this wasn't freed by g_free above
+    return data->result;
+}
+
+// Sets the icon to the XPM stored in icon
+void setIcon(struct Application *app)
+{
+    GdkPixbuf *appIcon = gdk_pixbuf_new_from_xpm_data((const char **)icon);
+    gtk_window_set_icon(app->mainWindow, appIcon);
+}
+
+static void load_finished_cb(WebKitWebView *webView,
+                             WebKitLoadEvent load_event,
+                             struct Application *app)
+{
+    switch (load_event)
+    {
+    // case WEBKIT_LOAD_STARTED:
+    //     /* New load, we have now a provisional URI */
+    //     // printf("Start downloading %s\n", webkit_web_view_get_uri(web_view));
+    //     /* Here we could start a spinner or update the
+    //      * location bar with the provisional URI */
+    //     break;
+    // case WEBKIT_LOAD_REDIRECTED:
+    //     // printf("Redirected to: %s\n", webkit_web_view_get_uri(web_view));
+    //     break;
+    // case WEBKIT_LOAD_COMMITTED:
+    //     /* The load is being performed. Current URI is
+    //      * the final one and it won't change unless a new
+    //      * load is requested or a navigation within the
+    //      * same page is performed */
+    //     // printf("Loading: %s\n", webkit_web_view_get_uri(web_view));
+    //     break;
+    case WEBKIT_LOAD_FINISHED:
+        /* Load finished, we can now stop the spinner */
+        // printf("Finished loading: %s\n", webkit_web_view_get_uri(web_view));
+
+        // Bindings
+        Debug("Binding Methods");
+        syncEval(app, app->bindings);
+
+        // Runtime
+        Debug("Setting up Wails runtime");
+        syncEval(app, &runtime);
+
+        // Loop over assets
+        int index = 1;
+        while (1)
+        {
+            // Get next asset pointer
+            const char *asset = assets[index];
+
+            // If we have no more assets, break
+            if (asset == 0x00)
+            {
+                break;
+            }
+
+            // sync eval the asset
+            syncEval(app, asset);
+            index++;
+        };
+
+        // Set the icon
+        setIcon(app);
+
+        // Setup fullscreen
+        if (app->fullscreen)
+        {
+            Debug("Going fullscreen");
+            Fullscreen(app);
+        }
+
+        // Setup resize
+        gtk_window_resize(GTK_WINDOW(app->mainWindow), app->width, app->height);
+
+        if (app->resizable)
+        {
+            gtk_window_set_default_size(GTK_WINDOW(app->mainWindow), app->width, app->height);
+        }
+        else
+        {
+            gtk_widget_set_size_request(GTK_WIDGET(app->mainWindow), app->width, app->height);
+            gtk_window_resize(GTK_WINDOW(app->mainWindow), app->width, app->height);
+            // Fix the min/max to the window size for good measure
+            app->minHeight = app->maxHeight = app->height;
+            app->minWidth = app->maxWidth = app->width;
+        }
+        gtk_window_set_resizable(GTK_WINDOW(app->mainWindow), app->resizable ? TRUE : FALSE);
+        setMinMaxSize(app);
+
+        // Centre by default
+        gtk_window_set_position(app->mainWindow, GTK_WIN_POS_CENTER);
+
+        // Show window and focus
+        if( app->startHidden == 0) {
+            gtk_widget_show_all(GTK_WIDGET(app->mainWindow));
+            gtk_widget_grab_focus(app->webView);
+        }
+        break;
+    }
+}
+
+static gboolean disable_context_menu_cb(
+    WebKitWebView *web_view,
+    WebKitContextMenu *context_menu,
+    GdkEvent *event,
+    WebKitHitTestResult *hit_test_result,
+    gpointer user_data)
+{
+    return TRUE;
+}
+
+static void printEvent(const char *message, GdkEventButton *event)
+{
+    Debug("%s: [button:%d] [x:%f] [y:%f] [time:%d]",
+          message,
+          event->button,
+          event->x_root,
+          event->y_root,
+          event->time);
+}
+
+
+static void dragWindow(WebKitUserContentManager *contentManager,
+                       WebKitJavascriptResult *result,
+                       struct Application *app)
+{
+    // If we get this message erroneously, ignore
+    if (app->dragButtonEvent == NULL)
+    {
+        return;
+    }
+
+    // Ignore non-toplevel widgets
+    GtkWidget *window = gtk_widget_get_toplevel(GTK_WIDGET(app->webView));
+    if (!GTK_IS_WINDOW(window))
+    {
+        return;
+    }
+
+    // Initiate the drag
+    printEvent("Starting drag with event", app->dragButtonEvent);
+
+    gtk_window_begin_move_drag(app->mainWindow,
+                               app->dragButton,
+                               app->dragButtonEvent->x_root,
+                               app->dragButtonEvent->y_root,
+                               app->dragButtonEvent->time);
+    // Clear the event
+    app->dragButtonEvent = NULL;
+
+    return;
+}
+
+gboolean buttonPress(GtkWidget *widget, GdkEventButton *event, struct Application *app)
+{
+    if (event->type == GDK_BUTTON_PRESS && event->button == app->dragButton)
+    {
+        app->dragButtonEvent = event;
+    }
+    return FALSE;
+}
+
+gboolean buttonRelease(GtkWidget *widget, GdkEventButton *event, struct Application *app)
+{
+    if (event->type == GDK_BUTTON_RELEASE && event->button == app->dragButton)
+    {
+        app->dragButtonEvent = NULL;
+    }
+    return FALSE;
+}
+
+static void sendMessageToBackend(WebKitUserContentManager *contentManager,
+                                 WebKitJavascriptResult *result,
+                                 struct Application *app)
+{
+#if WEBKIT_MAJOR_VERSION >= 2 && WEBKIT_MINOR_VERSION >= 22
+    JSCValue *value = webkit_javascript_result_get_js_value(result);
+    char *message = jsc_value_to_string(value);
+#else
+    JSGlobalContextRef context = webkit_javascript_result_get_global_context(result);
+    JSValueRef value = webkit_javascript_result_get_value(result);
+    JSStringRef js = JSValueToStringCopy(context, value, NULL);
+    size_t messageSize = JSStringGetMaximumUTF8CStringSize(js);
+    char *message = g_new(char, messageSize);
+    JSStringGetUTF8CString(js, message, messageSize);
+    JSStringRelease(js);
+#endif
+    app->sendMessageToBackend(message);
+    g_free(message);
+}
+
+void SetDebug(struct Application *app, int flag)
+{
+    debug = flag;
+}
+
+// getCurrentMonitorGeometry gets the geometry of the monitor
+// that the window is mostly on.
+GdkRectangle getCurrentMonitorGeometry(GtkWindow *window) {
+    // Get the monitor that the window is currently on
+    GdkDisplay *display = gtk_widget_get_display(GTK_WIDGET(window));
+    GdkWindow *gdk_window = gtk_widget_get_window(GTK_WIDGET(window));
+    GdkMonitor *monitor = gdk_display_get_monitor_at_window (display, gdk_window);
+
+    // Get the geometry of the monitor
+    GdkRectangle result;
+    gdk_monitor_get_geometry (monitor,&result);
+
+    return result;
+}
+
+/*******************
+ * Window Position *
+ *******************/
+
+// Position holds an x/y corrdinate
+struct Position {
+    int x;
+    int y;
+};
+
+// Internal call for setting the position of the window.
+void setPositionInternal(struct Application *app, struct Position *pos) {
+
+    // Get the monitor geometry
+    GdkRectangle m = getCurrentMonitorGeometry(app->mainWindow);
+
+    // Move the window relative to the monitor
+    gtk_window_move(app->mainWindow, m.x + pos->x, m.y + pos->y);
+    
+    // Free memory
+    free(pos);
+}
+
+// SetPosition sets the position of the window to the given x/y 
+// coordinates. The x/y values are relative to the monitor 
+// the window is mostly on.
+void SetPosition(struct Application *app, int x, int y) {
+    struct dispatchData *data = (struct dispatchData *)g_new(struct dispatchData, 1);
+    data->method = (dispatchMethod)setPositionInternal;
+    struct Position *pos = malloc(sizeof(struct Position));
+    pos->x = x;
+    pos->y = y;
+    data->args = pos;
+    data->app = app;
+
+    gdk_threads_add_idle(executeMethod, data);  
+}
+
+/***************
+ * Window Size *
+ ***************/
+
+// Size holds a width/height
+struct Size {
+    int width;
+    int height;
+};
+
+// Internal call for setting the size of the window.
+void setSizeInternal(struct Application *app, struct Size *size) {
+    gtk_window_resize(app->mainWindow, size->width, size->height);
+    free(size);
+}
+
+// SetSize sets the size of the window to the given width/height
+void SetSize(struct Application *app, int width, int height) {
+    struct dispatchData *data = (struct dispatchData *)g_new(struct dispatchData, 1);
+    data->method = (dispatchMethod)setSizeInternal;
+    struct Size *size = malloc(sizeof(struct Size));
+    size->width = width;
+    size->height = height;
+    data->args = size;
+    data->app = app;
+
+    gdk_threads_add_idle(executeMethod, data);  
+}
+
+
+// centerInternal will center the main window on the monitor it is mostly in
+void centerInternal(struct Application *app)
+{
+    // Get the geometry of the monitor
+    GdkRectangle m = getCurrentMonitorGeometry(app->mainWindow);
+
+    // Get the window width/height
+    int windowWidth, windowHeight;
+    gtk_window_get_size(app->mainWindow, &windowWidth, &windowHeight);
+
+    // Place the window at the center of the monitor
+    gtk_window_move(app->mainWindow, ((m.width - windowWidth) / 2) + m.x, ((m.height - windowHeight) / 2) + m.y);
+}
+
+// Center the window
+void Center(struct Application *app) {
+
+    // Setup a call to centerInternal on the main thread
+    struct dispatchData *data = (struct dispatchData *)g_new(struct dispatchData, 1);
+    data->method = (dispatchMethod)centerInternal;
+    data->app = app;
+
+    // Add call to main thread
+    gdk_threads_add_idle(executeMethod, data);  
+}
+
+// hideInternal hides the main window
+void hideInternal(struct Application *app) {
+    gtk_widget_hide (GTK_WIDGET(app->mainWindow));
+}
+
+// Hide places the hideInternal method onto the main thread for execution
+void Hide(struct Application *app) {
+
+    // Setup a call to hideInternal on the main thread
+    struct dispatchData *data = (struct dispatchData *)g_new(struct dispatchData, 1);
+    data->method = (dispatchMethod)hideInternal;
+    data->app = app;
+
+    // Add call to main thread
+    gdk_threads_add_idle(executeMethod, data);  
+}
+
+// showInternal shows the main window 
+void showInternal(struct Application *app) {
+    gtk_widget_show_all(GTK_WIDGET(app->mainWindow));
+    gtk_widget_grab_focus(app->webView);
+}
+
+// Show places the showInternal method onto the main thread for execution
+void Show(struct Application *app) {
+    struct dispatchData *data = (struct dispatchData *)g_new(struct dispatchData, 1);
+    data->method = (dispatchMethod)showInternal;
+    data->app = app;
+
+    gdk_threads_add_idle(executeMethod, data);  
+}
+
+
+// maximiseInternal maximises the main window
+void maximiseInternal(struct Application *app) {
+    gtk_window_maximize(GTK_WIDGET(app->mainWindow));
+}
+
+// Maximise places the maximiseInternal method onto the main thread for execution
+void Maximise(struct Application *app) {
+
+    // Setup a call to maximiseInternal on the main thread
+    struct dispatchData *data = (struct dispatchData *)g_new(struct dispatchData, 1);
+    data->method = (dispatchMethod)maximiseInternal;
+    data->app = app;
+
+    // Add call to main thread
+    gdk_threads_add_idle(executeMethod, data);  
+}
+
+// unmaximiseInternal unmaximises the main window
+void unmaximiseInternal(struct Application *app) {
+    gtk_window_unmaximize(GTK_WIDGET(app->mainWindow));
+}
+
+// Unmaximise places the unmaximiseInternal method onto the main thread for execution
+void Unmaximise(struct Application *app) {
+
+    // Setup a call to unmaximiseInternal on the main thread
+    struct dispatchData *data = (struct dispatchData *)g_new(struct dispatchData, 1);
+    data->method = (dispatchMethod)unmaximiseInternal;
+    data->app = app;
+
+    // Add call to main thread
+    gdk_threads_add_idle(executeMethod, data);  
+}
+
+
+// minimiseInternal minimises the main window
+void minimiseInternal(struct Application *app) {
+    gtk_window_iconify(app->mainWindow);
+}
+
+// Minimise places the minimiseInternal method onto the main thread for execution
+void Minimise(struct Application *app) {
+
+    // Setup a call to minimiseInternal on the main thread
+    struct dispatchData *data = (struct dispatchData *)g_new(struct dispatchData, 1);
+    data->method = (dispatchMethod)minimiseInternal;
+    data->app = app;
+
+    // Add call to main thread
+    gdk_threads_add_idle(executeMethod, data);  
+}
+
+// unminimiseInternal unminimises the main window
+void unminimiseInternal(struct Application *app) {
+    gtk_window_present(app->mainWindow);
+}
+
+// Unminimise places the unminimiseInternal method onto the main thread for execution
+void Unminimise(struct Application *app) {
+
+    // Setup a call to unminimiseInternal on the main thread
+    struct dispatchData *data = (struct dispatchData *)g_new(struct dispatchData, 1);
+    data->method = (dispatchMethod)unminimiseInternal;
+    data->app = app;
+
+    // Add call to main thread
+    gdk_threads_add_idle(executeMethod, data);  
+}
+
+
+void SetBindings(struct Application *app, const char *bindings)
+{
+    const char *temp = concat("window.wailsbindings = \"", bindings);
+    const char *jscall = concat(temp, "\";");
+    free((void *)temp);
+    app->bindings = jscall;
+}
+
+// This is called when the close button on the window is pressed
+gboolean close_button_pressed(GtkWidget *widget,
+                              GdkEvent *event,
+                              struct Application *app)
+{
+    app->sendMessageToBackend("WC"); // Window Close
+    return TRUE;
+}
+
+static void setupWindow(struct Application *app)
+{
+
+    // Create the window
+    GtkWidget *mainWindow = gtk_application_window_new(app->application);
+    // Save reference
+    app->mainWindow = GTK_WINDOW(mainWindow);
+
+    // Setup frame
+    gtk_window_set_decorated((GtkWindow *)mainWindow, app->frame);
+
+    // Setup title
+    gtk_window_set_title(GTK_WINDOW(mainWindow), app->title);
+
+    // Setup script handler
+    WebKitUserContentManager *contentManager = webkit_user_content_manager_new();
+
+    // Setup the invoke handler
+    webkit_user_content_manager_register_script_message_handler(contentManager, "external");
+    app->signalInvoke = g_signal_connect(contentManager, "script-message-received::external", G_CALLBACK(sendMessageToBackend), app);
+
+    // Setup the window drag handler if this is a frameless app
+    if ( app->frame == 0 ) {
+        webkit_user_content_manager_register_script_message_handler(contentManager, "windowDrag");
+        app->signalWindowDrag = g_signal_connect(contentManager, "script-message-received::windowDrag", G_CALLBACK(dragWindow), app);
+        // Setup the mouse handlers
+        app->signalButtonPressed = g_signal_connect(app->webView, "button-press-event", G_CALLBACK(buttonPress), app);
+        app->signalButtonReleased = g_signal_connect(app->webView, "button-release-event", G_CALLBACK(buttonRelease), app);
+    }
+    GtkWidget *webView = webkit_web_view_new_with_user_content_manager(contentManager);
+
+    // Save reference
+    app->webView = webView;
+
+    // Add the webview to the window
+    gtk_container_add(GTK_CONTAINER(mainWindow), webView);
+
+
+    // Load default HTML
+    app->signalLoadChanged = g_signal_connect(G_OBJECT(webView), "load-changed", G_CALLBACK(load_finished_cb), app);
+
+    // Load the user's HTML
+    // assets[0] is the HTML because the asset array is bundled like that by convention
+    webkit_web_view_load_uri(WEBKIT_WEB_VIEW(webView), assets[0]);
+
+    // Check if we want to enable the dev tools
+    if (app->devtools)
+    {
+        WebKitSettings *settings = webkit_web_view_get_settings(WEBKIT_WEB_VIEW(webView));
+        // webkit_settings_set_enable_write_console_messages_to_stdout(settings, true);
+        webkit_settings_set_enable_developer_extras(settings, true);
+    }
+    else
+    {
+        g_signal_connect(G_OBJECT(webView), "context-menu", G_CALLBACK(disable_context_menu_cb), app);
+    }
+
+    // Listen for close button signal
+    g_signal_connect(GTK_WIDGET(mainWindow), "delete-event", G_CALLBACK(close_button_pressed), app);
+}
+
+static void activate(GtkApplication* _, struct Application *app)
+{
+    setupWindow(app);
+}
+
+void Run(struct Application *app, int argc, char **argv)
+{
+    g_signal_connect(app->application, "activate", G_CALLBACK(activate), app);
+    g_application_run(G_APPLICATION(app->application), argc, argv);
+}
+
+#endif

v2/internal/ffenestri/json.h

@@ -0,0 +1,119 @@
+/*
+  Copyright (C) 2011 Joseph A. Adams (joeyadams3.14159@gmail.com)
+  All rights reserved.
+
+  Permission is hereby granted, free of charge, to any person obtaining a copy
+  of this software and associated documentation files (the "Software"), to deal
+  in the Software without restriction, including without limitation the rights
+  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+  copies of the Software, and to permit persons to whom the Software is
+  furnished to do so, subject to the following conditions:
+
+  The above copyright notice and this permission notice shall be included in
+  all copies or substantial portions of the Software.
+
+  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+  THE SOFTWARE.
+
+  Source: http://git.ozlabs.org/?p=ccan;a=tree;f=ccan/json;hb=HEAD
+*/
+
+#ifndef CCAN_JSON_H
+#define CCAN_JSON_H
+
+#include <stdbool.h>
+#include <stddef.h>
+
+typedef enum {
+	JSON_NULL,
+	JSON_BOOL,
+	JSON_STRING,
+	JSON_NUMBER,
+	JSON_ARRAY,
+	JSON_OBJECT,
+} JsonTag;
+
+typedef struct JsonNode JsonNode;
+
+struct JsonNode
+{
+	/* only if parent is an object or array (NULL otherwise) */
+	JsonNode *parent;
+	JsonNode *prev, *next;
+	
+	/* only if parent is an object (NULL otherwise) */
+	char *key; /* Must be valid UTF-8. */
+	
+	JsonTag tag;
+	union {
+		/* JSON_BOOL */
+		bool bool_;
+		
+		/* JSON_STRING */
+		char *string_; /* Must be valid UTF-8. */
+		
+		/* JSON_NUMBER */
+		double number_;
+		
+		/* JSON_ARRAY */
+		/* JSON_OBJECT */
+		struct {
+			JsonNode *head, *tail;
+		} children;
+	};
+};
+
+/*** Encoding, decoding, and validation ***/
+
+JsonNode   *json_decode         (const char *json);
+char       *json_encode         (const JsonNode *node);
+char       *json_encode_string  (const char *str);
+char       *json_stringify      (const JsonNode *node, const char *space);
+void        json_delete         (JsonNode *node);
+
+bool        json_validate       (const char *json);
+
+/*** Lookup and traversal ***/
+
+JsonNode   *json_find_element   (JsonNode *array, int index);
+JsonNode   *json_find_member    (JsonNode *object, const char *key);
+
+JsonNode   *json_first_child    (const JsonNode *node);
+
+#define json_foreach(i, object_or_array)            \
+	for ((i) = json_first_child(object_or_array);   \
+		 (i) != NULL;                               \
+		 (i) = (i)->next)
+
+/*** Construction and manipulation ***/
+
+JsonNode *json_mknull(void);
+JsonNode *json_mkbool(bool b);
+JsonNode *json_mkstring(const char *s);
+JsonNode *json_mknumber(double n);
+JsonNode *json_mkarray(void);
+JsonNode *json_mkobject(void);
+
+void json_append_element(JsonNode *array, JsonNode *element);
+void json_prepend_element(JsonNode *array, JsonNode *element);
+void json_append_member(JsonNode *object, const char *key, JsonNode *value);
+void json_prepend_member(JsonNode *object, const char *key, JsonNode *value);
+
+void json_remove_from_parent(JsonNode *node);
+
+/*** Debugging ***/
+
+/*
+ * Look for structure and encoding problems in a JsonNode or its descendents.
+ *
+ * If a problem is detected, return false, writing a description of the problem
+ * to errmsg (unless errmsg is NULL).
+ */
+bool json_check(const JsonNode *node, char errmsg[256]);
+
+#endif

v2/internal/fs/fs.go

@@ -0,0 +1,202 @@
+package fs
+
+import (
+	"crypto/md5"
+	"fmt"
+	"io"
+	"io/ioutil"
+	"os"
+	"path/filepath"
+	"runtime"
+	"unsafe"
+
+	"github.com/leaanthony/slicer"
+)
+
+// LocalDirectory gets the caller's file directory
+// Equivalent to node's __DIRNAME
+func LocalDirectory() string {
+	_, thisFile, _, _ := runtime.Caller(1)
+	return filepath.Dir(thisFile)
+}
+
+// RelativeToCwd returns an absolute path based on the cwd
+// and the given relative path
+func RelativeToCwd(relativePath string) (string, error) {
+	cwd, err := os.Getwd()
+	if err != nil {
+		return "", err
+	}
+
+	return filepath.Join(cwd, relativePath), nil
+}
+
+// Mkdir will create the given directory
+func Mkdir(dirname string) error {
+	return os.Mkdir(dirname, 0755)
+}
+
+// DeleteFile will delete the given file
+func DeleteFile(filename string) error {
+	return os.Remove(filename)
+}
+
+// CopyFile from source to target
+func CopyFile(source string, target string) error {
+	s, err := os.Open(source)
+	if err != nil {
+		return err
+	}
+	defer s.Close()
+	d, err := os.Create(target)
+	if err != nil {
+		return err
+	}
+	if _, err := io.Copy(d, s); err != nil {
+		d.Close()
+		return err
+	}
+	return d.Close()
+}
+
+// DirExists - Returns true if the given path resolves to a directory on the filesystem
+func DirExists(path string) bool {
+	fi, err := os.Lstat(path)
+	if err != nil {
+		return false
+	}
+
+	return fi.Mode().IsDir()
+}
+
+// FileExists returns a boolean value indicating whether
+// the given file exists
+func FileExists(path string) bool {
+	fi, err := os.Lstat(path)
+	if err != nil {
+		return false
+	}
+
+	return fi.Mode().IsRegular()
+}
+
+// RelativePath returns a qualified path created by joining the
+// directory of the calling file and the given relative path.
+//
+// Example: RelativePath("..") in *this* file would give you '/path/to/wails2/v2/internal`
+func RelativePath(relativepath string, optionalpaths ...string) string {
+	_, thisFile, _, _ := runtime.Caller(1)
+	localDir := filepath.Dir(thisFile)
+
+	// If we have optional paths, join them to the relativepath
+	if len(optionalpaths) > 0 {
+		paths := []string{relativepath}
+		paths = append(paths, optionalpaths...)
+		relativepath = filepath.Join(paths...)
+	}
+	result, err := filepath.Abs(filepath.Join(localDir, relativepath))
+	if err != nil {
+		// I'm allowing this for 1 reason only: It's fatal if the path
+		// supplied is wrong as it's only used internally in Wails. If we get
+		// that path wrong, we should know about it immediately. The other reason is
+		// that it cuts down a ton of unnecassary error handling.
+		panic(err)
+	}
+	return result
+}
+
+// MustLoadString attempts to load a string and will abort with a fatal message if
+// something goes wrong
+func MustLoadString(filename string) string {
+	data, err := ioutil.ReadFile(filename)
+	if err != nil {
+		fmt.Printf("FATAL: Unable to load file '%s': %s\n", filename, err.Error())
+		os.Exit(1)
+	}
+	return *(*string)(unsafe.Pointer(&data))
+}
+
+// MD5File returns the md5sum of the given file
+func MD5File(filename string) (string, error) {
+	f, err := os.Open(filename)
+	if err != nil {
+		return "", err
+	}
+	defer f.Close()
+
+	h := md5.New()
+	if _, err := io.Copy(h, f); err != nil {
+		return "", err
+	}
+
+	return fmt.Sprintf("%x", h.Sum(nil)), nil
+}
+
+// MustMD5File will call MD5File and abort the program on error
+func MustMD5File(filename string) string {
+	result, err := MD5File(filename)
+	if err != nil {
+		println("FATAL: Unable to MD5Sum file:", err.Error())
+		os.Exit(1)
+	}
+	return result
+}
+
+// MustWriteString will attempt to write the given data to the given filename
+// It will abort the program in the event of a failure
+func MustWriteString(filename string, data string) {
+	err := ioutil.WriteFile(filename, []byte(data), 0755)
+	if err != nil {
+		fatal("Unable to write file", filename, ":", err.Error())
+		os.Exit(1)
+	}
+}
+
+// fatal will print the optional messages and die
+func fatal(message ...string) {
+	if len(message) > 0 {
+		print("FATAL:")
+		for text := range message {
+			print(text)
+		}
+	}
+	os.Exit(1)
+}
+
+// GetSubdirectories returns a list of subdirectories for the given root directory
+func GetSubdirectories(rootDir string) (*slicer.StringSlicer, error) {
+	var result slicer.StringSlicer
+
+	// Iterate root dir
+	err := filepath.Walk(rootDir, func(path string, info os.FileInfo, err error) error {
+		if err != nil {
+			return err
+		}
+		// If we have a directory, save it
+		if info.IsDir() {
+			result.Add(path)
+		}
+		return nil
+	})
+	return &result, err
+}
+
+func DirIsEmpty(dir string) (bool, error) {
+
+	if !DirExists(dir) {
+		return false, fmt.Errorf("DirIsEmpty called with a non-existant directory: %s", dir)
+	}
+
+	// CREDIT: https://stackoverflow.com/a/30708914/8325411
+	f, err := os.Open(dir)
+	if err != nil {
+		return false, err
+	}
+	defer f.Close()
+
+	_, err = f.Readdirnames(1) // Or f.Readdir(1)
+	if err == io.EOF {
+		return true, nil
+	}
+	return false, err // Either not empty or error, suits both cases
+}

v2/internal/fs/fs_test.go

@@ -0,0 +1,31 @@
+package fs
+
+import (
+	"os"
+	"path/filepath"
+	"testing"
+
+	"github.com/matryer/is"
+)
+
+func TestRelativePath(t *testing.T) {
+
+	is := is.New(t)
+
+	cwd, err := os.Getwd()
+	is.Equal(err, nil)
+
+	// Check current directory
+	actual := RelativePath(".")
+	is.Equal(actual, cwd)
+
+	// Check 2 parameters
+	actual = RelativePath("..", "fs")
+	is.Equal(actual, cwd)
+
+	// Check 3 parameters including filename
+	actual = RelativePath("..", "fs", "fs.go")
+	expected := filepath.Join(cwd, "fs.go")
+	is.Equal(actual, expected)
+
+}