Feature/1.16 (#646)

* Initial support for embed

* Security (#644)

* Bump y18n from 3.2.1 to 3.2.2 in /runtime/js/runtime (#639)

* Create FUNDING.yml

* Update README.md

* Bump y18n from 3.2.1 to 3.2.2 in /runtime/js/runtime

Bumps [y18n](https://github.com/yargs/y18n) from 3.2.1 to 3.2.2.
- [Release notes](https://github.com/yargs/y18n/releases)
- [Changelog](https://github.com/yargs/y18n/blob/master/CHANGELOG.md)
- [Commits](https://github.com/yargs/y18n/commits)

Signed-off-by: dependabot[bot] <support@github.com>

Co-authored-by: Lea Anthony <lea.anthony@gmail.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

* Bump elliptic from 6.5.3 to 6.5.4 in /runtime/js (#617)

Bumps [elliptic](https://github.com/indutny/elliptic) from 6.5.3 to 6.5.4.
- [Release notes](https://github.com/indutny/elliptic/releases)
- [Commits](https://github.com/indutny/elliptic/compare/v6.5.3...v6.5.4)

Signed-off-by: dependabot[bot] <support@github.com>

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

* Bump y18n from 4.0.0 to 4.0.1 in /runtime/js (#643)

* Create FUNDING.yml

* Update README.md

* Updated sponsors

* Consistent styling of README.md

* Bump y18n from 4.0.0 to 4.0.1 in /runtime/js (#638)

Bumps [y18n](https://github.com/yargs/y18n) from 4.0.0 to 4.0.1.
- [Release notes](https://github.com/yargs/y18n/releases)
- [Changelog](https://github.com/yargs/y18n/blob/master/CHANGELOG.md)
- [Commits](https://github.com/yargs/y18n/commits)

Signed-off-by: dependabot[bot] <support@github.com>

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

* Revert "Bump y18n from 4.0.0 to 4.0.1 in /runtime/js (#638)" (#642)

This reverts commit 17b28a26bd.

* Bump y18n from 4.0.0 to 4.0.1 in /runtime/js

Bumps [y18n](https://github.com/yargs/y18n) from 4.0.0 to 4.0.1.
- [Release notes](https://github.com/yargs/y18n/releases)
- [Changelog](https://github.com/yargs/y18n/blob/master/CHANGELOG.md)
- [Commits](https://github.com/yargs/y18n/commits)

Signed-off-by: dependabot[bot] <support@github.com>

Co-authored-by: Lea Anthony <lea.anthony@gmail.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

* Support for minimum and maximum window sizes (#612)

* add support for minimum and maximum window sizes

* attempt to fix windows

* bug fixes

* support min/max window sizes on Linux and Windows

* fix min/max window sizes on Linux

* formatting and comments

* fixes Windows DPI issue, clamps width/height values to min/max

* App can't go into full screen when max size is set for Mac

* fixed Linux maximum width/height on window maximize

* Revert "fixed Linux maximum width/height on window maximize"

This reverts commit 3f7ba8b26435392116df3c9fe66ef11536e30c59.

The fix glitches on PopOS

Co-authored-by: Lea Anthony <lea.anthony@gmail.com>

* v1.13.0

* Remove mewn. Update templates. Remove logging.

* Import embed in templates!

* Fix react import path

* Update README.md

* Updated sponsors

* Consistent styling of README.md

* Revert "Bump y18n from 4.0.0 to 4.0.1 in /runtime/js (#638)" (#642)

This reverts commit 17b28a26bd.

* Update actions to use 1.16

* v1.16.0

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: RH12503 <48951973+RH12503@users.noreply.github.com>

.github/FUNDING.yml

@@ -0,0 +1,12 @@
+# These are supported funding model platforms
+
+github: [leaanthony]
+patreon: # Replace with a single Patreon username
+open_collective: # Replace with a single Open Collective username
+ko_fi: # Replace with a single Ko-fi username
+tidelift: # Replace with a single Tidelift platform-name/package-name e.g., npm/babel
+community_bridge: # Replace with a single Community Bridge project-name e.g., cloud-foundry
+liberapay: # Replace with a single Liberapay username
+issuehunt: # Replace with a single IssueHunt username
+otechie: # Replace with a single Otechie username
+custom: # Replace with up to 4 custom sponsorship URLs e.g., ['link1', 'link2']

.github/ISSUE_TEMPLATE/bug_report.md

@@ -8,8 +8,12 @@ assignees: ''
 ---
 
 #####################################################
-     If you have a technical issue, please do not open a bug this way! 
-                      Please use the `wails issue` command!                          
+     **If you have a technical issue, please do not open a bug this way!** 
+                      Please use the `wails issue` command!
+          If you do not do this then the issue may be closed automatically.                      
+
+ NOTE: If your bug is related to Windows, make sure you read 
+ the [Windows Developer Guide](https://wails.app/guides/windows/)
 #####################################################
 
 **Description**
@@ -33,3 +37,5 @@ Please provide your platform, GO version and variables, etc
 
 **Additional context**
 Add any other context about the problem here.
+
+- [ ] This issue is for Windows and I have read the [Windows Developer Guide](https://wails.app/guides/windows/)

.github/ISSUE_TEMPLATE/feature_request.md

@@ -0,0 +1,20 @@
+---
+name: Feature request
+about: Suggest an idea for this project
+title: ''
+labels: enhancement
+assignees: ''
+
+---
+
+**Is your feature request related to a problem? Please describe.**
+A clear and concise description of what the problem is. Ex. I'm always frustrated when [...]
+
+**Describe the solution you'd like**
+A clear and concise description of what you want to happen.
+
+**Describe alternatives you've considered**
+A clear and concise description of any alternative solutions or features you've considered.
+
+**Additional context**
+Add any other context or screenshots about the feature request here.

.github/workflows/latest-pre.yml

@@ -13,10 +13,10 @@ jobs:
         os: [ubuntu-latest, windows-latest, macOS-latest]
     steps:
 
-    - name: Set up Go 1.13
+    - name: Set up Go 1.16
       uses: actions/setup-go@v1
       with:
-        go-version: 1.13
+        go-version: 1.16
       id: go
 
     - name: Check out code into the Go module directory

.github/workflows/pr.yml

@@ -13,10 +13,10 @@ jobs:
         os: [ubuntu-latest, windows-latest, macOS-latest]
     steps:
 
-    - name: Set up Go 1.13
+    - name: Set up Go 1.16
       uses: actions/setup-go@v1
       with:
-        go-version: 1.13
+        go-version: 1.16
       id: go
 
     - name: Check out code into the Go module directory

.github/workflows/release.yml

@@ -15,10 +15,10 @@ jobs:
         os: [ubuntu-latest, windows-latest, macOS-latest]
     steps:
 
-    - name: Set up Go 1.13
+    - name: Set up Go 1.16
       uses: actions/setup-go@v1
       with:
-        go-version: 1.13
+        go-version: 1.16
       id: go
 
     - name: Check out code into the Go module directory

.gitignore

@@ -16,4 +16,9 @@ examples/**/example*
 cmd/wails/wails
 .DS_Store
 tmp
-node_modules/
+node_modules/
+v2/test/kitchensink/frontend/public
+v2/internal/ffenestri/runtime.c
+v2/internal/runtime/assets/desktop.js
+v2/test/kitchensink/build/darwin/desktop/kitchensink
+v2/test/kitchensink/frontend/package.json.md5

CONTRIBUTORS.md

@@ -34,3 +34,15 @@ Wails is what it is because of the time and effort given by these great people.
   * [Tim Kipp](https://github.com/timkippdev)
   * [Dmitry Gomzyakov](https://github.com/kyoto44)
   * [Arthur Wiebe](https://github.com/artooro)
+  * [Ilgıt Yıldırım](https://github.com/ilgityildirim)
+  * [Altynbek](https://github.com/gelleson)
+  * [Kyle](https://github.com/kmuchmore)
+  * [Balakrishna Prasad Ganne](https://github.com/aayush420)
+  * [Charaf Rezrazi](https://github.com/Rezrazi)
+  * [misitebao](https://github.com/misitebao)
+  * [Elie Grenon](https://github.com/DrunkenPoney)
+  * [SophieAu](https://github.com/SophieAu)
+  * [Alexander Matviychuk](https://github.com/alexmat)
+  * [RH12503](https://github.com/RH12503) 
+  * [hi019](https://github.com/hi019)
+  

README.md

@@ -2,7 +2,7 @@
    <img src="logo_cropped.png" width="40%"><br/>
 </p>
 <p align="center">
-   A framework for building desktop applications using Go & Web Technologies.<br/><br/>
+   Build desktop applications using Go & Web Technologies.<br/><br/>
    <a href="https://github.com/wailsapp/wails/blob/master/LICENSE"><img src="https://img.shields.io/badge/License-MIT-blue.svg"></a>
    <a href="https://goreportcard.com/report/github.com/wailsapp/wails"><img src="https://goreportcard.com/badge/github.com/wailsapp/wails"/></a>
    <a href="http://godoc.org/github.com/wailsapp/wails"><img src="https://img.shields.io/badge/godoc-reference-blue.svg"/></a>
@@ -20,7 +20,7 @@ The official docs can be found at [https://wails.app](https://wails.app).
 
 ## Features
 
-- Use standard Go libraries/frameworks for the backend
+- Use standard Go for the backend
 - Use any frontend technology to build your UI
 - Quickly create Vue, Vuetify or React frontends for your Go programs
 - Expose Go methods/functions to the frontend via a single bind command
@@ -30,6 +30,20 @@ The official docs can be found at [https://wails.app](https://wails.app).
 - Powerful cli tool
 - Multiplatform
 
+## Sponsors
+
+This project is supported by these kind people:
+
+<a href="https://pace.dev" style="width:100px"><img src="pace.jpeg" width="100"/></a>
+<a href="https://github.com/tc-hib" style="width:50px;border-radius: 50%">
+  <img src="https://github.com/tc-hib.png?size=50" width="50" style="border-radius: 50%"/>
+</a>
+<a href="https://github.com/picatz" style="width:50px;border-radius: 50%">
+  <img src="https://github.com/picatz.png?size=50" width="50" style="border-radius: 50%"/>
+</a>
+<a href="https://github.com/tylertravisty" style="width:50px;border-radius: 50%">
+  <img src="https://github.com/tylertravisty.png?size=50" width="50" style="border-radius: 50%"/>
+</a>
 
 ## Installation
 
@@ -147,7 +161,13 @@ This project was mainly coded to the following albums:
 
 [![FOSSA Status](https://app.fossa.io/api/projects/git%2Bgithub.com%2Fwailsapp%2Fwails.svg?type=large)](https://app.fossa.io/projects/git%2Bgithub.com%2Fwailsapp%2Fwails?ref=badge_large)
 
-## Special Thank You
+## Special Thanks
+
+<p align="center" style="text-align: center">
+   <a href="https://pace.dev"><img src="pace.jpeg"/></a><br/>
+   A *huge* thanks to <a href="https://pace.dev">Pace</a> for sponsoring the project and helping the efforts to get Wails ported to Apple Silicon!<br/><br/>
+   If you are looking for a Project Management tool that's powerful but quick and easy to use, check them out!<br/><br/>
+</p>
 
 <p align="center" style="text-align: center">
    A special thank you to JetBrains for donating licenses to us!<br/><br/>

app.go

@@ -2,7 +2,6 @@ package wails
 
 import (
 	"os"
-	"runtime"
 	"syscall"
 
 	"github.com/syossan27/tebata"
@@ -117,11 +116,6 @@ func (a *App) start() error {
 		return err
 	}
 
-	// Enable console for Windows debug builds
-	if runtime.GOOS == "windows" && BuildMode == cmd.BuildModeDebug {
-		a.renderer.EnableConsole()
-	}
-
 	// Start signal handler
 	t := tebata.New(os.Interrupt, os.Kill, syscall.SIGTERM, syscall.SIGINT, syscall.SIGKILL)
 	t.Reserve(func() {

cmd/github.go

@@ -24,7 +24,7 @@ func (g *GitHubHelper) GetVersionTags() ([]*SemanticVersion, error) {
 	result := []*SemanticVersion{}
 	var err error
 
-	resp, err := http.Get("https://api.github.com/repos/wailsapp/wails/tags")
+	resp, err := http.Get("https://api.github.com/repos/wailsapp/wails/releases")
 	if err != nil {
 		return result, err
 	}

cmd/helpers.go

@@ -2,7 +2,6 @@ package cmd
 
 import (
 	"fmt"
-	"io/ioutil"
 	"os"
 	"os/exec"
 	"os/user"
@@ -12,12 +11,13 @@ import (
 	"strings"
 	"time"
 
-	"github.com/leaanthony/mewn"
-	"github.com/leaanthony/mewn/lib"
 	"github.com/leaanthony/slicer"
 	"github.com/leaanthony/spinner"
+	wailsruntime "github.com/wailsapp/wails/runtime"
 )
 
+const xgoVersion = "1.0.1"
+
 var fs = NewFSHelper()
 
 // ValidateFrontendConfig checks if the frontend config is valid
@@ -59,30 +59,6 @@ func InstallGoDependencies(verbose bool) error {
 	return nil
 }
 
-// EmbedAssets will embed the built frontend assets via mewn.
-func EmbedAssets() ([]string, error) {
-	mewnFiles := lib.GetMewnFiles([]string{}, false)
-
-	referencedAssets, err := lib.GetReferencedAssets(mewnFiles)
-	if err != nil {
-		return []string{}, err
-	}
-
-	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 {
@@ -90,16 +66,17 @@ func InitializeCrossCompilation(verbose bool) error {
 	}
 
 	var packSpinner *spinner.Spinner
+	msg := fmt.Sprintf("Pulling wailsapp/xgo:%s docker image... (may take a while)", xgoVersion)
 	if !verbose {
-		packSpinner = spinner.New("Pulling wailsapp/xgo:latest docker image... (may take a while)")
+		packSpinner = spinner.New(msg)
 		packSpinner.SetSpinSpeed(50)
 		packSpinner.Start()
 	} else {
-		println("Pulling wailsapp/xgo:latest docker image... (may take a while)")
+		println(msg)
 	}
 
 	err := NewProgramHelper(verbose).RunCommandArray([]string{"docker",
-		"pull", "wailsapp/xgo:latest"})
+		"pull", fmt.Sprintf("wailsapp/xgo:%s", xgoVersion)})
 
 	if err != nil {
 		if packSpinner != nil {
@@ -114,7 +91,7 @@ func InitializeCrossCompilation(verbose bool) error {
 	return nil
 }
 
-// BuildDocker builds the project using the cross compiling wailsapp/xgo:latest container
+// BuildDocker builds the project using the cross compiling wailsapp/xgo:<xgoVersion> container
 func BuildDocker(binaryName string, buildMode string, projectOptions *ProjectOptions) error {
 	var packSpinner *spinner.Spinner
 	if buildMode == BuildModeBridge {
@@ -124,7 +101,10 @@ func BuildDocker(binaryName string, buildMode string, projectOptions *ProjectOpt
 	// Check build directory
 	buildDirectory := filepath.Join(fs.Cwd(), "build")
 	if !fs.DirExists(buildDirectory) {
-		fs.MkDir(buildDirectory)
+		err := fs.MkDir(buildDirectory)
+		if err != nil {
+			return err
+		}
 	}
 
 	buildCommand := slicer.String()
@@ -140,24 +120,31 @@ func BuildDocker(binaryName string, buildMode string, projectOptions *ProjectOpt
 		"-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_TAGS=%s", projectOptions.Tags),
 		"-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", fmt.Sprintf("TARGETS=%s/%s", projectOptions.Platform, projectOptions.Architecture),
 		"-e", "GOPROXY=",
 		"-e", "GO111MODULE=on",
-		"wailsapp/xgo:latest",
-		".",
 	} {
 		buildCommand.Add(arg)
 	}
 
+	if projectOptions.GoPath != "" {
+		buildCommand.Add("-v")
+		buildCommand.Add(fmt.Sprintf("%s:/go", projectOptions.GoPath))
+	}
+
+	buildCommand.Add(fmt.Sprintf("wailsapp/xgo:%s", xgoVersion))
+	buildCommand.Add(".")
+
 	compileMessage := fmt.Sprintf(
-		"Packing + Compiling project for %s/%s using docker image wailsapp/xgo:latest",
-		projectOptions.Platform, projectOptions.Architecture)
+		"Packing + Compiling project for %s/%s using docker image wailsapp/xgo:%s",
+		projectOptions.Platform, projectOptions.Architecture, xgoVersion)
 
 	if buildMode == BuildModeDebug {
 		compileMessage += " (Debug Mode)"
@@ -188,11 +175,6 @@ func BuildDocker(binaryName string, buildMode string, projectOptions *ProjectOpt
 // 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
 	}
@@ -216,10 +198,6 @@ func BuildNative(binaryName string, forceRebuild bool, buildMode string, project
 	buildCommand.Add("go")
 
 	buildCommand.Add("build")
-	if buildMode == BuildModeBridge {
-		// Ignore errors
-		buildCommand.Add("-i")
-	}
 
 	if binaryName != "" {
 		// Alter binary name based on OS
@@ -243,6 +221,10 @@ func BuildNative(binaryName string, forceRebuild bool, buildMode string, project
 
 	buildCommand.AddSlice([]string{"-ldflags", ldFlags(projectOptions, buildMode)})
 
+	if projectOptions.Tags != "" {
+		buildCommand.AddSlice([]string{"--tags", projectOptions.Tags})
+	}
+
 	if projectOptions.Verbose {
 		fmt.Printf("Command: %v\n", buildCommand.AsSlice())
 	}
@@ -265,12 +247,6 @@ func BuildNative(binaryName string, forceRebuild bool, buildMode string, project
 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
@@ -286,20 +262,6 @@ func BuildApplication(binaryName string, forceRebuild bool, buildMode string, pa
 		}
 	}
 
-	// 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 {
@@ -364,30 +326,6 @@ func BuildFrontend(projectOptions *ProjectOptions) error {
 	return nil
 }
 
-// CheckMewn checks if mewn is installed and if not, attempts to fetch it
-func CheckMewn(verbose bool) (err error) {
-	programHelper := NewProgramHelper(verbose)
-	if !programHelper.IsInstalled("mewn") {
-		var buildSpinner *spinner.Spinner
-		if !verbose {
-			buildSpinner = spinner.New()
-			buildSpinner.SetSpinSpeed(50)
-			buildSpinner.Start("Installing Mewn asset packer...")
-		}
-		err := programHelper.InstallGoPackage("github.com/leaanthony/mewn/cmd/mewn")
-		if err != nil {
-			if buildSpinner != nil {
-				buildSpinner.Error()
-			}
-			return err
-		}
-		if buildSpinner != nil {
-			buildSpinner.Success()
-		}
-	}
-	return nil
-}
-
 // CheckWindres checks if Windres is installed and if not, aborts
 func CheckWindres() (err error) {
 	if runtime.GOOS != "windows" { // FIXME: Handle windows cross-compile for windows!
@@ -483,11 +421,18 @@ func InstallFrontendDeps(projectDir string, projectOptions *ProjectOptions, forc
 		}
 
 		// Update md5sum file
-		ioutil.WriteFile(md5sumFile, []byte(packageJSONMD5), 0644)
+		err := os.WriteFile(md5sumFile, []byte(packageJSONMD5), 0644)
+		if err != nil {
+			return err
+		}
 	}
 
 	// Install the runtime
-	err = InstallRuntime(caller, projectDir, projectOptions)
+	if caller == "build" {
+		err = InstallProdRuntime(projectDir, projectOptions)
+	} else {
+		err = InstallBridge(projectDir, projectOptions)
+	}
 	if err != nil {
 		return err
 	}
@@ -500,28 +445,17 @@ func InstallFrontendDeps(projectDir string, projectOptions *ProjectOptions, forc
 	return nil
 }
 
-// InstallRuntime installs the correct runtime for the type of build
-func InstallRuntime(caller string, projectDir string, projectOptions *ProjectOptions) error {
-	if caller == "build" {
-		return InstallProdRuntime(projectDir, projectOptions)
-	}
-
-	return InstallBridge(projectDir, projectOptions)
-}
-
 // InstallBridge installs the relevant bridge javascript library
 func InstallBridge(projectDir string, projectOptions *ProjectOptions) error {
-	bridgeFileData := mewn.String("../runtime/assets/bridge.js")
 	bridgeFileTarget := filepath.Join(projectDir, projectOptions.FrontEnd.Dir, "node_modules", "@wailsapp", "runtime", "init.js")
-	err := fs.CreateFile(bridgeFileTarget, []byte(bridgeFileData))
+	err := fs.CreateFile(bridgeFileTarget, wailsruntime.BridgeJS)
 	return err
 }
 
 // InstallProdRuntime installs the production runtime
 func InstallProdRuntime(projectDir string, projectOptions *ProjectOptions) error {
-	prodInit := mewn.String("../runtime/js/runtime/init.js")
 	bridgeFileTarget := filepath.Join(projectDir, projectOptions.FrontEnd.Dir, "node_modules", "@wailsapp", "runtime", "init.js")
-	err := fs.CreateFile(bridgeFileTarget, []byte(prodInit))
+	err := fs.CreateFile(bridgeFileTarget, wailsruntime.InitJS)
 	return err
 }
 
@@ -530,6 +464,9 @@ func InstallProdRuntime(projectDir string, projectOptions *ProjectOptions) error
 func ServeProject(projectOptions *ProjectOptions, logger *Logger) error {
 	go func() {
 		time.Sleep(2 * time.Second)
+		if projectOptions.Platform == "windows" {
+			logger.Yellow("*** Please note: Windows builds use mshtml which is only compatible with IE11. We strongly recommend only using IE11 when running 'wails serve'! For more information, please read https://wails.app/guides/windows/ ***")
+		}
 		logger.Green(">>>>> To connect, you will need to run '" + projectOptions.FrontEnd.Serve + "' in the '" + projectOptions.FrontEnd.Dir + "' directory <<<<<")
 	}()
 	location, err := filepath.Abs(filepath.Join("build", projectOptions.BinaryName))
@@ -561,6 +498,10 @@ func ldFlags(po *ProjectOptions, buildMode string) string {
 		ldflags += "-H windowsgui "
 	}
 
+	if po.UseFirebug {
+		ldflags += "-X github.com/wailsapp/wails/lib/renderer.UseFirebug=true "
+	}
+
 	ldflags += "-X github.com/wailsapp/wails.BuildMode=" + buildMode
 
 	// Add additional ldflags passed in via the `ldflags` cli flag
@@ -578,3 +519,9 @@ func ldFlags(po *ProjectOptions, buildMode string) string {
 	}
 	return ldflags
 }
+
+func getGitConfigValue(key string) (string, error) {
+	output, err := exec.Command("git", "config", "--get", "--null", key).Output()
+	// When using --null git appends a null character (\u0000) to the command output
+	return strings.TrimRight(string(output), "\u0000"), err
+}

cmd/linux.go

@@ -65,6 +65,10 @@ const (
 	Solus
 	// Ctlos Linux distribution
 	Ctlos
+	// EndeavourOS linux distribution
+	EndeavourOS
+	// Crux linux distribution
+	Crux
 )
 
 // DistroInfo contains all the information relating to a linux distribution
@@ -132,7 +136,7 @@ func parseOsRelease(osRelease string) *DistroInfo {
 	case "archlabs":
 		result.Distribution = ArchLabs
 	case "ctlos":
-		result.Distribution = Ctlos	
+		result.Distribution = Ctlos
 	case "debian":
 		result.Distribution = Debian
 	case "ubuntu":
@@ -171,6 +175,10 @@ func parseOsRelease(osRelease string) *DistroInfo {
 		result.Distribution = PopOS
 	case "solus":
 		result.Distribution = Solus
+	case "endeavouros":
+		result.Distribution = EndeavourOS
+	case "crux":
+		result.Distribution = Crux
 	default:
 		result.Distribution = Unknown
 	}
@@ -251,6 +259,17 @@ func RpmInstalled(packageName string) (bool, error) {
 	return exitCode == 0, nil
 }
 
+// PrtGetInstalled uses prt-get to see if a package is installed
+func PrtGetInstalled(packageName string) (bool, error) {
+	program := NewProgramHelper()
+	prtget := program.FindProgram("prt-get")
+	if prtget == nil {
+		return false, fmt.Errorf("cannot check dependencies: prt-get not found")
+	}
+	_, _, exitCode, _ := prtget.Run("isinst", packageName)
+	return exitCode == 0, nil
+}
+
 // RequestSupportForDistribution promts the user to submit a request to support their
 // currently unsupported distribution
 func RequestSupportForDistribution(distroInfo *DistroInfo) error {

cmd/linuxdb.yaml

@@ -202,7 +202,16 @@ distributions:
         name: Ctlos Linux
         gccversioncommand: *gccdumpversion
         programs: *archdefaultprograms
-        libraries: *archdefaultlibraries                
+        libraries: *archdefaultlibraries   
+  endeavouros:
+    id: endeavouros
+    releases:
+      default:
+        version: default
+        name: EndeavourOS
+        gccversioncommand: *gccdumpversion
+        programs: *archdefaultprograms
+        libraries: *archdefaultlibraries             
   manjaro:
     id: manjaro
     releases:
@@ -298,3 +307,22 @@ distributions:
           gccversioncommand: *gccdumpfullversion
           programs: *opensusedefaultprograms
           libraries: *opensusedefaultlibraries
+  crux:
+      id: crux
+      releases:
+        default:
+          version: default
+          name: Crux Linux
+          gccversioncommand: *gccdumpversion
+          programs:
+            - name: gcc
+              help: Please install with `sudo prt-get depinst gcc-c++ make` and try again
+            - name: pkg-config
+              help: Please install with `sudo prt-get depinst pkg-config` and try again
+            - name: npm
+              help: Please install with `sudo prt-get depinst nodejs` and try again
+          libraries:
+            - name: gtk3
+              help: Please install with `sudo prt-get depinst gtk3` and try again
+            - name: webkitgtk
+              help: Please install with `sudo prt-get depinst webkitgtk` and try again

cmd/project.go

@@ -6,6 +6,7 @@ import (
 	"io/ioutil"
 	"os"
 	"path/filepath"
+	"runtime"
 	"sort"
 	"strings"
 
@@ -150,6 +151,7 @@ type ProjectOptions struct {
 	Template               string    `json:"-"`
 	BinaryName             string    `json:"binaryname"`
 	FrontEnd               *frontend `json:"frontend,omitempty"`
+	Tags                   string    `json:"tags"`
 	NPMProjectName         string    `json:"-"`
 	system                 *SystemHelper
 	log                    *Logger
@@ -162,6 +164,25 @@ type ProjectOptions struct {
 	Platform               string
 	Architecture           string
 	LdFlags                string
+	GoPath                 string
+	UseFirebug             bool
+
+	// Supported platforms
+	Platforms []string `json:"platforms,omitempty"`
+}
+
+// PlatformSupported returns true if the template is supported
+// on the current platform
+func (po *ProjectOptions) PlatformSupported() bool {
+
+	// Default is all platforms supported
+	if len(po.Platforms) == 0 {
+		return true
+	}
+
+	// Check that the platform is in the list
+	platformsSupported := slicer.String(po.Platforms)
+	return platformsSupported.Contains(runtime.GOOS)
 }
 
 // Defaults sets the default project template
@@ -232,13 +253,16 @@ func (po *ProjectOptions) PromptForInputs() error {
 		for _, k := range keys {
 			templateDetail := templateDetails[k]
 			templateList.Add(templateDetail)
+			if !templateDetail.Metadata.PlatformSupported() {
+				templateDetail.Metadata.Name = "* " + templateDetail.Metadata.Name
+			}
 			options.Add(fmt.Sprintf("%s - %s", templateDetail.Metadata.Name, templateDetail.Metadata.ShortDescription))
 		}
 
 		templateIndex := 0
 
 		if len(options.AsSlice()) > 1 {
-			templateIndex = PromptSelection("Please select a template", options.AsSlice(), 0)
+			templateIndex = PromptSelection("Please select a template (* means unsupported on current platform)", options.AsSlice(), 0)
 		}
 
 		if len(templateList.AsSlice()) == 0 {
@@ -249,6 +273,10 @@ func (po *ProjectOptions) PromptForInputs() error {
 		po.selectedTemplate = templateList.AsSlice()[templateIndex].(*TemplateDetails)
 	}
 
+	po.selectedTemplate.Metadata.Name = strings.TrimPrefix(po.selectedTemplate.Metadata.Name, "* ")
+	if !po.selectedTemplate.Metadata.PlatformSupported() {
+		println("WARNING: This template is unsupported on this platform!")
+	}
 	fmt.Println("Template: " + po.selectedTemplate.Metadata.Name)
 
 	// Setup NPM Project name
@@ -371,5 +399,9 @@ func processTemplateMetadata(templateMetadata *TemplateMetadata, po *ProjectOpti
 		}
 		po.FrontEnd.Serve = templateMetadata.Serve
 	}
+
+	// Save platforms
+	po.Platforms = templateMetadata.Platforms
+
 	return nil
 }

cmd/semver.go

@@ -24,11 +24,19 @@ func NewSemanticVersion(version string) (*SemanticVersion, error) {
 
 // IsRelease returns true if it's a release version
 func (s *SemanticVersion) IsRelease() bool {
+	// Limit to v1
+	if s.Version.Major() != 1 {
+		return false
+	}
 	return len(s.Version.Prerelease()) == 0 && len(s.Version.Metadata()) == 0
 }
 
 // IsPreRelease returns true if it's a prerelease version
 func (s *SemanticVersion) IsPreRelease() bool {
+	// Limit to v1
+	if s.Version.Major() != 1 {
+		return false
+	}
 	return len(s.Version.Prerelease()) > 0
 }
 

cmd/semver_test.go

@@ -0,0 +1,65 @@
+package cmd
+
+import (
+	"testing"
+)
+
+func TestSemanticVersion_IsPreRelease(t *testing.T) {
+	tests := []struct {
+		name    string
+		version string
+		want    bool
+	}{
+		{"v1.6.7-pre0", "v1.6.7-pre0", true},
+		{"v2.6.7+pre0", "v2.6.7+pre0", false},
+		{"v2.6.7", "v2.6.7", false},
+		{"v2.0.0+alpha.1", "v2.0.0+alpha.1", false},
+		{"v2.0.0-alpha.1", "v2.0.0-alpha.1", false},
+		{"v1.6.7", "v1.6.7", false},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			semanticversion, err := NewSemanticVersion(tt.version)
+			if err != nil {
+				t.Errorf("Invalid semantic version: %s", semanticversion)
+				return
+			}
+			s := &SemanticVersion{
+				Version: semanticversion.Version,
+			}
+			if got := s.IsPreRelease(); got != tt.want {
+				t.Errorf("IsPreRelease() = %v, want %v", got, tt.want)
+			}
+		})
+	}
+}
+
+func TestSemanticVersion_IsRelease(t *testing.T) {
+	tests := []struct {
+		name    string
+		version string
+		want    bool
+	}{
+		{"v1.6.7", "v1.6.7", true},
+		{"v2.6.7-pre0", "v2.6.7-pre0", false},
+		{"v2.6.7", "v2.6.7", false},
+		{"v2.6.7+release", "v2.6.7+release", false},
+		{"v2.0.0-alpha.1", "v2.0.0-alpha.1", false},
+		{"v1.6.7-pre0", "v1.6.7-pre0", false},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			semanticversion, err := NewSemanticVersion(tt.version)
+			if err != nil {
+				t.Errorf("Invalid semantic version: %s", semanticversion)
+				return
+			}
+			s := &SemanticVersion{
+				Version: semanticversion.Version,
+			}
+			if got := s.IsRelease(); got != tt.want {
+				t.Errorf("IsRelease() = %v, want %v", got, tt.want)
+			}
+		})
+	}
+}

cmd/system.go

@@ -99,11 +99,16 @@ func (s *SystemHelper) setup() error {
 
 	if config.Name != "" {
 		systemConfig["name"] = PromptRequired("What is your name", config.Name)
+	} else if n, err := getGitConfigValue("user.name"); err == nil && n != "" {
+		systemConfig["name"] = PromptRequired("What is your name", n)
 	} else {
 		systemConfig["name"] = PromptRequired("What is your name")
 	}
+
 	if config.Email != "" {
 		systemConfig["email"] = PromptRequired("What is your email address", config.Email)
+	} else if e, err := getGitConfigValue("user.email"); err == nil && e != "" {
+		systemConfig["email"] = PromptRequired("What is your email address", e)
 	} else {
 		systemConfig["email"] = PromptRequired("What is your email address")
 	}
@@ -180,7 +185,7 @@ func (s *SystemHelper) Initialise() error {
 	return s.setup()
 }
 
-// SystemConfig - Defines system wode configuration data
+// SystemConfig - Defines system wide configuration data
 type SystemConfig struct {
 	Name  string `json:"name"`
 	Email string `json:"email"`
@@ -276,7 +281,7 @@ func CheckDependencies(logger *Logger) (bool, error) {
 		switch distroInfo.Distribution {
 		case Ubuntu, Debian, Zorin, Parrot, Linuxmint, Elementary, Kali, Neon, Deepin, Raspbian, PopOS:
 			libraryChecker = DpkgInstalled
-		case Arch, ArcoLinux, ArchLabs, Ctlos, Manjaro, ManjaroARM:
+		case Arch, ArcoLinux, ArchLabs, Ctlos, Manjaro, ManjaroARM, EndeavourOS:
 			libraryChecker = PacmanInstalled
 		case CentOS, Fedora, Tumbleweed, Leap:
 			libraryChecker = RpmInstalled
@@ -286,6 +291,8 @@ func CheckDependencies(logger *Logger) (bool, error) {
 			libraryChecker = XbpsInstalled
 		case Solus:
 			libraryChecker = EOpkgInstalled
+		case Crux:
+			libraryChecker = PrtGetInstalled
 		default:
 			return false, RequestSupportForDistribution(distroInfo)
 		}

cmd/templates.go

@@ -7,6 +7,7 @@ import (
 	"io/ioutil"
 	"log"
 	"path/filepath"
+	"runtime"
 	"strings"
 	"text/template"
 
@@ -29,6 +30,26 @@ type TemplateMetadata struct {
 	Bridge               string                `json:"bridge"`
 	WailsDir             string                `json:"wailsdir"`
 	TemplateDependencies []*TemplateDependency `json:"dependencies,omitempty"`
+
+	// List of platforms that this template is supported on.
+	// No value means all platforms. A platform name is the same string
+	// as `runtime.GOOS` will return, eg: "darwin". NOTE: This is
+	// case sensitive.
+	Platforms []string `json:"platforms,omitempty"`
+}
+
+// PlatformSupported returns true if this template supports the
+// currently running platform
+func (m *TemplateMetadata) PlatformSupported() bool {
+
+	// Default is all platforms supported
+	if len(m.Platforms) == 0 {
+		return true
+	}
+
+	// Check that the platform is in the list
+	platformsSupported := slicer.String(m.Platforms)
+	return platformsSupported.Contains(runtime.GOOS)
 }
 
 // TemplateDependency defines a binary dependency for the template
@@ -128,11 +149,11 @@ func (t *TemplateHelper) GetTemplateDetails() (map[string]*TemplateDetails, erro
 		result[name] = &TemplateDetails{
 			Path: dir,
 		}
-		_ = &TemplateMetadata{}
 		metadata, err := t.LoadMetadata(dir)
 		if err != nil {
 			return nil, err
 		}
+
 		result[name].Metadata = metadata
 		if metadata.Name != "" {
 			result[name].Name = metadata.Name

cmd/templates/angular-template/frontend/package.json.template

@@ -3,7 +3,7 @@
   "version": "0.0.0",
   "scripts": {
     "ng": "npx ng",
-    "start": "npx ng serve --poll=2000 --host=0.0.0.0",
+    "serve": "npx ng serve --poll=2000 --host=0.0.0.0",
     "build": "npx ng build --single-bundle true --output-hashing none --prod --bundle-styles false",
     "test": "npx ng test",
     "lint": "npx ng lint",

cmd/templates/angular-template/main.go.template

@@ -1,7 +1,7 @@
 package main
 
 import (
-	"github.com/leaanthony/mewn"
+    _ "embed"
 	"github.com/wailsapp/wails"
 )
 
@@ -9,10 +9,13 @@ func basic() string {
 	return "World!"
 }
 
-func main() {
+//go:embed frontend/dist/my-app/main.js
+var js string
 
-	js := mewn.String("./frontend/dist/my-app/main.js")
-	css := mewn.String("./frontend/dist/my-app/styles.css")
+//go:embed frontend/dist/my-app/styles.css
+var css string
+
+func main() {
 
 	app := wails.CreateApp(&wails.AppConfig{
 		Width:  1024,

cmd/templates/angular-template/template.json

@@ -14,7 +14,7 @@
   "author": "bh90210 <ktc@pm.me>",
   "created": "2019-06-15 18:23:48.666414555 +0300 EEST m=+223.934866008",
   "frontenddir": "frontend",
-  "serve": "npx ng serve --poll=2000",
+  "serve": "npm run serve",
   "bridge": "src",
   "wailsdir": ""
 }

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

@@ -12,7 +12,7 @@
     "@wailsapp/runtime": "^1.0.10"
   },
   "scripts": {
-    "start": "react-scripts start",
+    "serve": "react-scripts start",
     "build": "react-scripts build",
     "test": "react-scripts test",
     "eject": "react-scripts eject"

cmd/templates/create-react-app/main.go.template

@@ -1,7 +1,7 @@
 package main
 
 import (
-  "github.com/leaanthony/mewn"
+  _ "embed"
   "github.com/wailsapp/wails"
 )
 
@@ -9,10 +9,13 @@ func basic() string {
   return "World!"
 }
 
-func main() {
+//go:embed frontend/build/static/js/main.js
+var js string
 
-  js := mewn.String("./frontend/build/static/js/main.js")
-  css := mewn.String("./frontend/build/static/css/main.css")
+//go:embed frontend/build/static/css/main.css
+var css string
+
+func main() {
 
   app := wails.CreateApp(&wails.AppConfig{
     Width:  1024,

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

@@ -8,7 +8,7 @@
   "author": "bh90210 <ktc@pm.me>",
   "created": "2019-06-07 18:23:48.666414555 +0300 EEST m=+223.934866008",
   "frontenddir": "frontend",
-  "serve": "npm run start",
+  "serve": "npm run serve",
   "bridge": "src",
   "wailsdir": ""
 }

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

@@ -3,7 +3,7 @@
   "author": "{{.Author.Name}}<{{.Author.Email}}>",
   "scripts": {
     "build": "rollup -c",
-    "dev": "rollup -c -w",
+    "serve": "rollup -c -w",
     "start": "sirv public"
   },
   "devDependencies": {

cmd/templates/svelte/frontend/rollup.config.js

@@ -80,7 +80,6 @@ export default {
 				{
 				  targets: '> 0.25%, not dead, IE 11',
 				  modules: false,
-				  spec: true, 
 				  useBuiltIns: 'usage',
 				  forceAllTransforms: true,
 				  corejs: 3,

cmd/templates/svelte/main.go.template

@@ -1,7 +1,7 @@
 package main
 
 import (
-	"github.com/leaanthony/mewn"
+    _ "embed"
 	"github.com/wailsapp/wails"
 )
 
@@ -9,9 +9,13 @@ func basic() string {
 	return "World!"
 }
 
+//go:embed frontend/public/build/bundle.js
+var js string
+
+//go:embed frontend/public/build/bundle.css
+var css string
+
 func main() {
-	js := mewn.String("./frontend/public/build/bundle.js")
-	css := mewn.String("./frontend/public/build/bundle.css")
 
 	app := wails.CreateApp(&wails.AppConfig{
 		Width:  1024,

cmd/templates/svelte/template.json

@@ -8,7 +8,7 @@
   "author": "Tim Kipp <timkipp.22.developer@gmail.com>",
   "created": "2020-09-06 13:06:10.469848 -0700 PDT m=+213.578828559",
   "frontenddir": "frontend",
-  "serve": "npm run dev",
+  "serve": "npm run serve",
   "bridge": "src",
   "wailsdir": ""
 }

cmd/templates/vanilla/main.go.template

@@ -1,14 +1,17 @@
 package main
 
 import (
-  "github.com/leaanthony/mewn"
+  _ "embed"
   "github.com/wailsapp/wails"
 )
 
-func main() {
+//go:embed frontend/build/main.js
+var js string
 
-	js := mewn.String("./frontend/build/main.js")
-	css := mewn.String("./frontend/build/main.css")
+//go:embed frontend/build/main.css
+var css string
+
+func main() {
 
   app := wails.CreateApp(&wails.AppConfig{
     Width:  1024,

cmd/templates/vue3-full/frontend/.browserslistrc

@@ -0,0 +1,3 @@
+> 1%
+last 2 versions
+not dead

cmd/templates/vue3-full/frontend/.eslintrc.js

@@ -0,0 +1,29 @@
+module.exports = {
+  root: true,
+  env: {
+    node: true
+  },
+  'extends': [
+    'plugin:vue/vue3-essential',
+    'eslint:recommended',
+    '@vue/typescript/recommended'
+  ],
+  parserOptions: {
+    ecmaVersion: 2020
+  },
+  rules: {
+    'no-console': process.env.NODE_ENV === 'production' ? 'warn' : 'off',
+    'no-debugger': process.env.NODE_ENV === 'production' ? 'warn' : 'off'
+  },
+  overrides: [
+    {
+      files: [
+        '**/__tests__/*.{j,t}s?(x)',
+        '**/tests/unit/**/*.spec.{j,t}s?(x)'
+      ],
+      env: {
+        mocha: true
+      }
+    }
+  ]
+}

cmd/templates/vue3-full/frontend/.gitignore

@@ -0,0 +1,21 @@
+.DS_Store
+node_modules
+/dist
+
+# local env files
+.env.local
+.env.*.local
+
+# Log files
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+
+# Editor directories and files
+.idea
+.vscode
+*.suo
+*.ntvs*
+*.njsproj
+*.sln
+*.sw*

cmd/templates/vue3-full/frontend/README.md

@@ -0,0 +1,35 @@
+# vue basic
+
+## Project setup
+
+```
+npm install
+```
+
+### Compiles and hot-reloads for development
+
+```
+npm run serve
+```
+
+### Compiles and minifies for production
+
+```
+npm run build
+```
+
+### Run your tests
+
+```
+npm run test
+```
+
+### Lints and fixes files
+
+```
+npm run lint
+```
+
+### Customize configuration
+
+See [Configuration Reference](https://cli.vuejs.org/config/).

cmd/templates/vue3-full/frontend/package.json.template

@@ -0,0 +1,37 @@
+{
+  "name": "{{.NPMProjectName}}",
+  "author": "{{.Author.Name}}<{{.Author.Email}}>",
+  "private": true,
+  "scripts": {
+    "serve": "vue-cli-service serve",
+    "build": "vue-cli-service build",
+    "test:unit": "vue-cli-service test:unit",
+    "lint": "vue-cli-service lint"
+  },
+  "dependencies": {
+    "vue": "^3.0.0-0",
+    "vue-router": "^4.0.0-0",
+    "regenerator-runtime": "^0.13.7",
+    "@wailsapp/runtime": "^1.1.1"
+  },
+  "devDependencies": {
+    "@types/chai": "^4.2.12",
+    "@types/mocha": "^8.0.3",
+    "@typescript-eslint/eslint-plugin": "^4.3.0",
+    "@typescript-eslint/parser": "^4.3.0",
+    "@vue/cli-plugin-eslint": "~4.5.9",
+    "@vue/cli-plugin-router": "~4.5.9",
+    "@vue/cli-plugin-typescript": "~4.5.9",
+    "@vue/cli-plugin-unit-mocha": "~4.5.9",
+    "@vue/cli-service": "~4.5.9",
+    "@vue/compiler-sfc": "^3.0.0",
+    "@vue/eslint-config-typescript": "^7.0.0",
+    "@vue/test-utils": "^2.0.0-0",
+    "chai": "^4.2.0",
+    "eslint": "<7.0.0",
+    "eslint-plugin-vue": "^7.0.0",
+    "node-sass": "^4.14.1",
+    "sass-loader": "^10.0.2",
+    "typescript": "~4.0.3"
+  }
+}

cmd/templates/vue3-full/frontend/src/App.vue

@@ -0,0 +1,32 @@
+<template>
+  <div id=app>
+    <div id="nav">
+      <router-link to="/">Home</router-link> |
+      <router-link to="/about">About</router-link>
+    </div>
+    <router-view/>
+  </div>
+</template>
+
+<style lang="scss">
+#app {
+  font-family: Avenir, Helvetica, Arial, sans-serif;
+  -webkit-font-smoothing: antialiased;
+  -moz-osx-font-smoothing: grayscale;
+  text-align: center;
+  color: #2c3e50;
+}
+
+#nav {
+  padding: 30px;
+
+  a {
+    font-weight: bold;
+    color: #2c3e50;
+
+    &.router-link-exact-active {
+      color: #42b983;
+    }
+  }
+}
+</style>

cmd/templates/vue3-full/frontend/src/components/HelloWorld.vue

@@ -0,0 +1,34 @@
+<template>
+  <div class="hello">
+    <h1>{{ msg }}</h1>
+  </div>
+</template>
+
+<script lang="ts">
+import { defineComponent } from 'vue';
+
+export default defineComponent({
+  name: 'HelloWorld',
+  props: {
+    msg: String,
+  },
+});
+</script>
+
+<!-- Add "scoped" attribute to limit CSS to this component only -->
+<style scoped lang="scss">
+h3 {
+  margin: 40px 0 0;
+}
+ul {
+  list-style-type: none;
+  padding: 0;
+}
+li {
+  display: inline-block;
+  margin: 0 10px;
+}
+a {
+  color: #42b983;
+}
+</style>

cmd/templates/vue3-full/frontend/src/main.ts

@@ -0,0 +1,8 @@
+import { createApp } from 'vue';
+import App from './App.vue';
+import router from './router';
+import * as Wails from '@wailsapp/runtime';
+
+Wails.Init(() => {
+    createApp(App).use(router).mount('#app');
+});

cmd/templates/vue3-full/frontend/src/router/index.ts

@@ -0,0 +1,27 @@
+import { createRouter, createMemoryHistory, RouteRecordRaw } from 'vue-router'
+import Home from '../views/Home.vue'
+import About from '../views/About.vue'
+
+const routes: Array<RouteRecordRaw> = [
+  {
+    path: '/',
+    name: 'Home',
+    component: Home
+  },
+  {
+    path: '/about',
+    name: 'About',
+    // route level code-splitting
+    // this generates a separate chunk (about.[hash].js) for this route
+    // which is lazy-loaded when the route is visited.
+    // component: () => import(/* webpackChunkName: "about" */ '../views/About.vue')
+    component: About
+  }
+]
+
+const router = createRouter({
+  history: createMemoryHistory(),
+  routes
+})
+
+export default router

cmd/templates/vue3-full/frontend/src/shims-vue.d.ts

@@ -0,0 +1,5 @@
+declare module '*.vue' {
+  import { defineComponent } from 'vue'
+  const component: ReturnType<typeof defineComponent>
+  export default component
+}

cmd/templates/vue3-full/frontend/src/views/About.vue

@@ -0,0 +1,5 @@
+<template>
+  <div class="about">
+    <h1>This is an about page</h1>
+  </div>
+</template>

cmd/templates/vue3-full/frontend/src/views/Home.vue

@@ -0,0 +1,40 @@
+<template>
+  <div class="home">
+    <img @click="getMessage" alt="Vue logo" src="../assets/appicon.png" :style="{ height: '400px' }"/>
+    <HelloWorld :msg="message" />
+  </div>
+</template>
+
+<script lang="ts">
+import { ref, defineComponent } from "vue";
+import HelloWorld from "@/components/HelloWorld.vue"; // @ is an alias to /src
+
+interface Backend {
+  basic(): Promise<string>;
+}
+
+declare global {
+  interface Window {
+    backend: Backend;
+  }
+}
+
+export default defineComponent({
+  name: "Home",
+  components: {
+    HelloWorld,
+  },
+  setup() {
+    
+    const message = ref("Click the Icon");
+
+    const getMessage = () => {
+      window.backend.basic().then(result => {
+        message.value = result;
+      });
+    }
+
+    return { message: message, getMessage: getMessage };
+  },
+});
+</script>

cmd/templates/vue3-full/frontend/tests/unit/example.spec.ts

@@ -0,0 +1,14 @@
+import { expect } from 'chai';
+import { describe, it } from 'mocha';
+import { shallowMount } from '@vue/test-utils';
+import HelloWorld from '@/components/HelloWorld.vue';
+
+describe('HelloWorld.vue', () => {
+	it('renders props.msg when passed', () => {
+		const msg = 'new message';
+		const wrapper = shallowMount(HelloWorld, {
+			props: { msg }
+		});
+		expect(wrapper.text()).to.include(msg);
+	});
+});

cmd/templates/vue3-full/frontend/tsconfig.json

@@ -0,0 +1,41 @@
+{
+  "compilerOptions": {
+    "target": "es5",
+    "module": "esnext",
+    "strict": true,
+    "jsx": "preserve",
+    "importHelpers": true,
+    "moduleResolution": "node",
+    "skipLibCheck": true,
+    "esModuleInterop": true,
+    "allowSyntheticDefaultImports": true,
+    "sourceMap": true,
+    "baseUrl": ".",
+    "types": [
+      "webpack-env",
+      "mocha",
+      "chai"
+    ],
+    "paths": {
+      "@/*": [
+        "src/*"
+      ]
+    },
+    "lib": [
+      "esnext",
+      "dom",
+      "dom.iterable",
+      "scripthost"
+    ]
+  },
+  "include": [
+    "src/**/*.ts",
+    "src/**/*.tsx",
+    "src/**/*.vue",
+    "tests/**/*.ts",
+    "tests/**/*.tsx"
+  ],
+  "exclude": [
+    "node_modules"
+  ]
+}

cmd/templates/vue3-full/frontend/vue.config.js

@@ -0,0 +1,42 @@
+let cssConfig = {};
+
+if (process.env.NODE_ENV == 'production') {
+	cssConfig = {
+		extract: {
+			filename: '[name].css',
+			chunkFilename: '[name].css'
+		}
+	};
+}
+
+module.exports = {
+	chainWebpack: config => {
+		let limit = 9999999999999999;
+		config.module
+			.rule('images')
+			.test(/\.(png|gif|jpg)(\?.*)?$/i)
+			.use('url-loader')
+			.loader('url-loader')
+			.tap(options => Object.assign(options, { limit: limit }));
+		config.module
+			.rule('fonts')
+			.test(/\.(woff2?|eot|ttf|otf|svg)(\?.*)?$/i)
+			.use('url-loader')
+			.loader('url-loader')
+			.options({
+				limit: limit
+			});
+	},
+	css: cssConfig,
+	configureWebpack: {
+		output: {
+			filename: '[name].js'
+		},
+		optimization: {
+			splitChunks: false
+		}
+	},
+	devServer: {
+		disableHostCheck: true
+	}
+};

cmd/templates/vue3-full/go.mod.template

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

cmd/templates/vue3-full/main.go.template

@@ -0,0 +1,30 @@
+package main
+
+import (
+  _ "embed"
+  "github.com/wailsapp/wails"
+)
+
+func basic() string {
+  return "Hello World!"
+}
+
+//go:embed frontend/dist/app.js
+var js string
+
+//go:embed frontend/dist/app.css
+var css string
+
+func main() {
+
+  app := wails.CreateApp(&wails.AppConfig{
+    Width:  1024,
+    Height: 768,
+    Title:  "{{.Name}}",
+    JS:     js,
+    CSS:    css,
+    Colour: "#131313",
+  })
+  app.Bind(basic)
+  app.Run()
+}

cmd/templates/vue3-full/template.json

@@ -0,0 +1,15 @@
+{
+  "name": "Vue3 Full",
+  "version": "1.0.0",
+  "shortdescription": "Vue 3, Vuex, Vue-router, and Webpack4",
+  "description": "Vue3.0.0 Vuex, Vue-router, and Webpack 4",
+  "install": "npm install",
+  "build": "npm run build",
+  "author": "Kyle Muchmore <kmuchmor@gmail.com>",
+  "created": "2020-09-24 21:18:55.09417 +0000 UTC m=+90.125590001",
+  "frontenddir": "frontend",
+  "serve": "npm run serve",
+  "bridge": "src",
+  "wailsdir": "",
+  "platforms": ["linux", "darwin"]
+}

cmd/templates/vuebasic/main.go.template

@@ -1,7 +1,7 @@
 package main
 
 import (
-  "github.com/leaanthony/mewn"
+  _ "embed"
   "github.com/wailsapp/wails"
 )
 
@@ -9,10 +9,13 @@ func basic() string {
   return "Hello World!"
 }
 
-func main() {
+//go:embed frontend/dist/app.js
+var js string
 
-  js := mewn.String("./frontend/dist/app.js")
-  css := mewn.String("./frontend/dist/app.css")
+//go:embed frontend/dist/app.css
+var css string
+
+func main() {
 
   app := wails.CreateApp(&wails.AppConfig{
     Width:  1024,

cmd/templates/vuetify-basic/main.go.template

@@ -1,7 +1,7 @@
 package main
 
 import (
-  "github.com/leaanthony/mewn"
+  _ "embed"
   "github.com/wailsapp/wails"
 )
 
@@ -9,10 +9,13 @@ func basic() string {
   return "Hello World!"
 }
 
-func main() {
+//go:embed frontend/dist/app.js
+var js string
 
-  js := mewn.String("./frontend/dist/app.js")
-  css := mewn.String("./frontend/dist/app.css")
+//go:embed frontend/dist/app.css
+var css string
+
+func main() {
 
   app := wails.CreateApp(&wails.AppConfig{
     Width:  1024,

cmd/templates/vuetify2-basic/frontend/package.json.template

@@ -11,7 +11,7 @@
     "core-js": "^3.6.4",
     "regenerator-runtime": "^0.13.3",
     "vue": "^2.6.11",
-    "vuetify": "^2.2.15",
+    "vuetify": "^2.3.15",
     "@wailsapp/runtime": "^1.0.10"
   },
   "devDependencies": {

cmd/templates/vuetify2-basic/frontend/src/App.vue

@@ -24,13 +24,13 @@
       <v-app-bar-nav-icon @click.stop="drawer = !drawer"></v-app-bar-nav-icon>
       <v-toolbar-title>Application</v-toolbar-title>
     </v-app-bar>
-    <v-content>
+    <v-main>
       <v-container fluid class="px-0">
         <v-layout justify-center align-center class="px-0">
           <hello-world></hello-world>
         </v-layout>
       </v-container>
-    </v-content>
+    </v-main>
     <v-footer app fixed>
       <span style="margin-left:1em">&copy; You</span>
     </v-footer>
@@ -57,4 +57,4 @@
   .logo {
     width: 16em;
   }
-</style>
+</style>

cmd/templates/vuetify2-basic/main.go.template

@@ -1,7 +1,7 @@
 package main
 
 import (
-  "github.com/leaanthony/mewn"
+  _ "embed"
   "github.com/wailsapp/wails"
 )
 
@@ -9,10 +9,13 @@ func basic() string {
   return "Hello World!"
 }
 
-func main() {
+//go:embed frontend/dist/app.js
+var js string
 
-  js := mewn.String("./frontend/dist/app.js")
-  css := mewn.String("./frontend/dist/app.css")
+//go:embed frontend/dist/app.css
+var css string
+
+func main() {
 
   app := wails.CreateApp(&wails.AppConfig{
     Width:  1024,

cmd/version.go

@@ -1,4 +1,4 @@
 package cmd
 
 // Version - Wails version
-const Version = "v1.8.0"
+const Version = "v1.16.0"

cmd/wails/0_setup.go

@@ -39,12 +39,6 @@ Create your first project by running 'wails init'.`
 			return err
 		}
 
-		// Check Mewn
-		err = cmd.CheckMewn(false)
-		if err != nil {
-			return err
-		}
-
 		// Check for errors
 		// CheckDependencies() returns !errors
 		// so to get the right message in this

cmd/wails/4_build.go

@@ -2,6 +2,7 @@ package main
 
 import (
 	"fmt"
+	"log"
 	"os"
 	"runtime"
 	"strings"
@@ -26,10 +27,13 @@ func init() {
 	var packageApp = false
 	var forceRebuild = false
 	var debugMode = false
+	var usefirebug = false
+	var gopath = ""
 	var typescriptFilename = ""
 	var verbose = false
 	var platform = ""
 	var ldflags = ""
+	var tags = ""
 
 	buildSpinner := spinner.NewSpinner()
 	buildSpinner.SetSpinSpeed(50)
@@ -40,13 +44,19 @@ func init() {
 		BoolFlag("p", "Package application on successful build", &packageApp).
 		BoolFlag("f", "Force rebuild of application components", &forceRebuild).
 		BoolFlag("d", "Build in Debug mode", &debugMode).
+		BoolFlag("firebug", "Enable firebug console for debug builds", &usefirebug).
 		BoolFlag("verbose", "Verbose output", &verbose).
 		StringFlag("t", "Generate Typescript definitions to given file (at runtime)", &typescriptFilename).
-		StringFlag("ldflags", "Extra options for -ldflags", &ldflags)
+		StringFlag("ldflags", "Extra options for -ldflags", &ldflags).
+		StringFlag("gopath", "Specify your GOPATH location. Mounted to /go during cross-compilation.", &gopath).
+		StringFlag("tags", "Build tags to pass to the go compiler (quoted and space separated)", &tags)
 
 	var b strings.Builder
 	for _, plat := range getSupportedPlatforms() {
-		fmt.Fprintf(&b, " - %s\n", plat)
+		_, err := fmt.Fprintf(&b, " - %s\n", plat)
+		if err != nil {
+			log.Fatal(err)
+		}
 	}
 	initCmd.StringFlag("x",
 		fmt.Sprintf("Cross-compile application to specified platform via xgo\n%s", b.String()),
@@ -67,13 +77,22 @@ func init() {
 		// Project options
 		projectOptions := &cmd.ProjectOptions{}
 		projectOptions.Verbose = verbose
+		projectOptions.UseFirebug = usefirebug
 
 		// Check we are in project directory
 		// Check project.json loads correctly
 		fs := cmd.NewFSHelper()
 		err := projectOptions.LoadConfig(fs.Cwd())
 		if err != nil {
-			return fmt.Errorf("Unable to find 'project.json'. Please check you are in a Wails project directory")
+			return fmt.Errorf("unable to find 'project.json'. Please check you are in a Wails project directory")
+		}
+
+		// Set firebug flag
+		projectOptions.UseFirebug = usefirebug
+
+		// Check that this platform is supported
+		if !projectOptions.PlatformSupported() {
+			logger.Yellow("WARNING: This project is unsupported on %s - it probably won't work!\n         Valid platforms: %s\n", runtime.GOOS, strings.Join(projectOptions.Platforms, ", "))
 		}
 
 		// Set cross-compile
@@ -97,6 +116,10 @@ func init() {
 
 		// Add ldflags
 		projectOptions.LdFlags = ldflags
+		projectOptions.GoPath = gopath
+
+		// Add tags
+		projectOptions.Tags = tags
 
 		// Validate config
 		// Check if we have a frontend
@@ -124,12 +147,6 @@ func init() {
 			if err != nil {
 				return err
 			}
-
-			// Ensure that runtime init.js is the production version
-			err = cmd.InstallProdRuntime(projectDir, projectOptions)
-			if err != nil {
-				return err
-			}
 		}
 
 		// Move to project directory
@@ -181,6 +198,10 @@ func init() {
 			return err
 		}
 
+		if projectOptions.Platform == "windows" {
+			logger.Yellow("*** Please note: Windows builds use mshtml which is only compatible with IE11. For more information, please read https://wails.app/guides/windows/ ***")
+		}
+
 		logger.Yellow("Awesome! Project '%s' built!", projectOptions.Name)
 
 		return nil

cmd/wails/6_serve.go

@@ -27,19 +27,13 @@ func init() {
 		logger.PrintSmallBanner(message)
 		fmt.Println()
 
-		// Check Mewn is installed
-		err := cmd.CheckMewn(verbose)
-		if err != nil {
-			return err
-		}
-
 		// Project options
 		projectOptions := &cmd.ProjectOptions{}
 
 		// Check we are in project directory
 		// Check project.json loads correctly
 		fs := cmd.NewFSHelper()
-		err = projectOptions.LoadConfig(fs.Cwd())
+		err := projectOptions.LoadConfig(fs.Cwd())
 		if err != nil {
 			return err
 		}
@@ -70,6 +64,7 @@ func init() {
 		}
 
 		logger.Yellow("Awesome! Project '%s' built!", projectOptions.Name)
+
 		return cmd.ServeProject(projectOptions, logger)
 	})
 }

config.go

@@ -1,20 +1,49 @@
 package wails
 
 import (
-	"github.com/leaanthony/mewn"
+	"net/url"
+	"strings"
+
 	"github.com/wailsapp/wails/runtime"
 )
 
 // AppConfig is the configuration structure used when creating a Wails App object
 type AppConfig struct {
-	Width, Height    int
-	Title            string
-	defaultHTML      string
-	HTML             string
-	JS               string
-	CSS              string
-	Colour           string
-	Resizable        bool
+	// The width and height of your application in pixels
+	Width, Height int
+
+	// The title to put in the title bar
+	Title string
+
+	// The HTML your app should use. If you leave it blank, a default will be used:
+	// <!DOCTYPE html><html lang="en"><head><meta charset="utf-8"><meta http-equiv="IE=edge" content="IE=edge"></head><body><div id="app"></div><script type="text/javascript"></script></body></html>
+	HTML string
+
+	// The Javascript your app should use. Normally this should be generated by a bundler.
+	JS string
+
+	// The CSS your app should use. Normally this should be generated by a bundler.
+	CSS string
+
+	// The colour of your window. Can take "#fff", "rgb(255,255,255)", "rgba(255,255,255,1)" formats
+	Colour string
+
+	// Indicates whether your app should be resizable
+	Resizable bool
+
+	// Minimum width of a resizable window. If set, MinHeight should also be set.
+	MinWidth int
+
+	// Minimum height of a resizable window. If set, MinWidth should also be set.
+	MinHeight int
+
+	// Maximum width of a resizable window. If set, MaxHeight should also be set.
+	MaxWidth int
+
+	// Maximum height of a resizable window. If set, MaxWidth should also be set.
+	MaxHeight int
+
+	// Indicated if the devtools should be disabled
 	DisableInspector bool
 }
 
@@ -33,9 +62,14 @@ func (a *AppConfig) GetTitle() string {
 	return a.Title
 }
 
-// GetDefaultHTML returns the default HTML
-func (a *AppConfig) GetDefaultHTML() string {
-	return a.defaultHTML
+// GetHTML returns the default HTML
+func (a *AppConfig) GetHTML() string {
+	if len(a.HTML) > 0 {
+		a.HTML = url.QueryEscape(a.HTML)
+		a.HTML = "data:text/html," + strings.ReplaceAll(a.HTML, "+", "%20")
+		a.HTML = strings.ReplaceAll(a.HTML, "%3D", "=")
+	}
+	return a.HTML
 }
 
 // GetResizable returns true if the window should be resizable
@@ -43,6 +77,26 @@ func (a *AppConfig) GetResizable() bool {
 	return a.Resizable
 }
 
+// GetMinWidth returns the minimum width of the window
+func (a *AppConfig) GetMinWidth() int {
+	return a.MinWidth
+}
+
+// GetMinHeight returns the minimum height of the window
+func (a *AppConfig) GetMinHeight() int {
+	return a.MinHeight
+}
+
+// GetMaxWidth returns the maximum width of the window
+func (a *AppConfig) GetMaxWidth() int {
+	return a.MaxWidth
+}
+
+// GetMaxHeight returns the maximum height of the window
+func (a *AppConfig) GetMaxHeight() int {
+	return a.MaxHeight
+}
+
 // GetDisableInspector returns true if the inspector should be disabled
 func (a *AppConfig) GetDisableInspector() bool {
 	return a.DisableInspector
@@ -75,16 +129,41 @@ func (a *AppConfig) merge(in *AppConfig) error {
 		a.Colour = in.Colour
 	}
 
+	if in.HTML != "" {
+		a.HTML = in.HTML
+	}
+
 	if in.JS != "" {
 		a.JS = in.JS
 	}
 
+	if in.HTML != "" {
+		a.HTML = in.HTML
+	}
+
 	if in.Width != 0 {
 		a.Width = in.Width
 	}
 	if in.Height != 0 {
 		a.Height = in.Height
 	}
+
+	if in.MinWidth != 0 {
+		a.MinWidth = in.MinWidth
+	}
+
+	if in.MinHeight != 0 {
+		a.MinHeight = in.MinHeight
+	}
+
+	if in.MaxWidth != 0 {
+		a.MaxWidth = in.MaxWidth
+	}
+
+	if in.MaxHeight != 0 {
+		a.MaxHeight = in.MaxHeight
+	}
+
 	a.Resizable = in.Resizable
 	a.DisableInspector = in.DisableInspector
 
@@ -97,9 +176,13 @@ func newConfig(userConfig *AppConfig) (*AppConfig, error) {
 		Width:     800,
 		Height:    600,
 		Resizable: true,
+		MinWidth:  -1,
+		MinHeight: -1,
+		MaxWidth:  -1,
+		MaxHeight: -1,
 		Title:     "My Wails App",
 		Colour:    "#FFF", // White by default
-		HTML:      mewn.String("./runtime/assets/default.html"),
+		HTML:      defaultHTML,
 	}
 
 	if userConfig != nil {
@@ -111,3 +194,17 @@ func newConfig(userConfig *AppConfig) (*AppConfig, error) {
 
 	return result, nil
 }
+
+var defaultHTML = `<!DOCTYPE html>
+<html lang="en">
+
+<head>
+  <meta charset="utf-8">
+  <meta http-equiv="X-UA-Compatible" content="IE=edge">
+</head>
+
+<body>
+  <div id="app"></div>
+</body>
+
+</html>`

go.mod

@@ -9,7 +9,6 @@ require (
 	github.com/jackmordaunt/icns v1.0.0
 	github.com/kennygrant/sanitize v1.2.4
 	github.com/konsorten/go-windows-terminal-sequences v1.0.2 // indirect
-	github.com/leaanthony/mewn v0.10.7
 	github.com/leaanthony/slicer v1.4.0
 	github.com/leaanthony/spinner v0.5.3
 	github.com/mattn/go-colorable v0.1.1 // indirect
@@ -28,4 +27,4 @@ require (
 	gopkg.in/yaml.v3 v3.0.0-20190709130402-674ba3eaed22
 )
 
-go 1.13
+go 1.16

go.sum

@@ -26,8 +26,6 @@ github.com/konsorten/go-windows-terminal-sequences v1.0.2 h1:DB17ag19krx9CFsz4o3
 github.com/konsorten/go-windows-terminal-sequences v1.0.2/go.mod h1:T0+1ngSBFLxvqU3pZ+m/2kptfBszLMUkC4ZK/EgS/cQ=
 github.com/kr/pty v1.1.1 h1:VkoXIwSboBpnk99O/KFauAEILuNHv5DVFKZMBN/gUgw=
 github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=
-github.com/leaanthony/mewn v0.10.7 h1:jCcNJyIUOpwj+I5SuATvCugDjHkoo+j6ubEOxxrxmPA=
-github.com/leaanthony/mewn v0.10.7/go.mod h1:CRkTx8unLiSSilu/Sd7i1LwrdaAL+3eQ3ses99qGMEQ=
 github.com/leaanthony/slicer v1.4.0 h1:Q9u4w+UBU4WHjXnEDdz+eRLMKF/rnyosRBiqULnc1J8=
 github.com/leaanthony/slicer v1.4.0/go.mod h1:FwrApmf8gOrpzEWM2J/9Lh79tyq8KTX5AzRtwV7m4AY=
 github.com/leaanthony/spinner v0.5.3 h1:IMTvgdQCec5QA4qRy0wil4XsRP+QcG1OwLWVK/LPZ5Y=
@@ -66,7 +64,6 @@ 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 v0.0.0-20200622213623-75b288015ac9 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=

lib/event/manager.go

@@ -18,6 +18,7 @@ type Manager struct {
 	log            *logger.CustomLogger
 	renderer       interfaces.Renderer // Messages will be dispatched to the frontend
 	wg             sync.WaitGroup
+	mu             sync.Mutex
 }
 
 // NewManager creates a new event manager with a 100 event buffer
@@ -42,12 +43,12 @@ func (e *Manager) PushEvent(eventData *messages.EventData) {
 // means it does not expire (default).
 type eventListener struct {
 	callback func(...interface{}) // Function to call with emitted event data
-	counter  int                  // Expire after counter callbacks. 0 = infinite
+	counter  uint                 // Expire after counter callbacks. 0 = infinite
 	expired  bool                 // Indicates if the listener has expired
 }
 
 // Creates a new event listener from the given callback function
-func (e *Manager) addEventListener(eventName string, callback func(...interface{}), counter int) error {
+func (e *Manager) addEventListener(eventName string, callback func(...interface{}), counter uint) error {
 
 	// Sanity check inputs
 	if callback == nil {
@@ -75,7 +76,30 @@ func (e *Manager) addEventListener(eventName string, callback func(...interface{
 // On adds a listener for the given event
 func (e *Manager) On(eventName string, callback func(...interface{})) {
 	// Add a persistent eventListener (counter = 0)
-	e.addEventListener(eventName, callback, 0)
+	err := e.addEventListener(eventName, callback, 0)
+	if err != nil {
+		e.log.Error(err.Error())
+	}
+}
+
+// Once adds a listener for the given event that will auto remove
+// after one callback
+func (e *Manager) Once(eventName string, callback func(...interface{})) {
+	// Add a persistent eventListener (counter = 0)
+	err := e.addEventListener(eventName, callback, 1)
+	if err != nil {
+		e.log.Error(err.Error())
+	}
+}
+
+// OnMultiple adds a listener for the given event that will trigger
+// at most <counter> times.
+func (e *Manager) OnMultiple(eventName string, callback func(...interface{}), counter uint) {
+	// Add a persistent eventListener (counter = 0)
+	err := e.addEventListener(eventName, callback, counter)
+	if err != nil {
+		e.log.Error(err.Error())
+	}
 }
 
 // Emit broadcasts the given event to the subscribed listeners
@@ -108,20 +132,24 @@ func (e *Manager) Start(renderer interfaces.Renderer) {
 				})
 
 				// Notify renderer
-				e.renderer.NotifyEvent(event)
+				err := e.renderer.NotifyEvent(event)
+				if err != nil {
+					e.log.Error(err.Error())
+				}
 
-				// Notify Go listeners
-				var listenersToRemove []*eventListener
+				e.mu.Lock()
 
 				// Iterate listeners
 				for _, listener := range e.listeners[event.Name] {
 
-					// Call listener, perhaps with data
-					if event.Data == nil {
-						go listener.callback()
-					} else {
-						unpacked := event.Data.([]interface{})
-						go listener.callback(unpacked...)
+					if !listener.expired {
+						// Call listener, perhaps with data
+						if event.Data == nil {
+							go listener.callback()
+						} else {
+							unpacked := event.Data.([]interface{})
+							go listener.callback(unpacked...)
+						}
 					}
 
 					// Update listen counter
@@ -133,15 +161,8 @@ func (e *Manager) Start(renderer interfaces.Renderer) {
 					}
 				}
 
-				// Remove expired listeners in place
-				if len(listenersToRemove) > 0 {
-					listeners := e.listeners[event.Name][:0]
-					for _, listener := range listeners {
-						if !listener.expired {
-							listeners = append(listeners, listener)
-						}
-					}
-				}
+				e.mu.Unlock()
+
 			case <-e.quitChannel:
 				e.running = false
 			}

lib/interfaces/appconfig.go

@@ -5,10 +5,14 @@ type AppConfig interface {
 	GetWidth() int
 	GetHeight() int
 	GetTitle() string
+	GetMinWidth() int
+	GetMinHeight() int
+	GetMaxWidth() int
+	GetMaxHeight() int
 	GetResizable() bool
-	GetDefaultHTML() string
+	GetHTML() string
 	GetDisableInspector() bool
 	GetColour() string
 	GetCSS() string
 	GetJS() string
-}
+}

lib/interfaces/eventmanager.go

@@ -6,6 +6,8 @@ import "github.com/wailsapp/wails/lib/messages"
 type EventManager interface {
 	PushEvent(*messages.EventData)
 	Emit(eventName string, optionalData ...interface{})
+	OnMultiple(eventName string, callback func(...interface{}), counter uint)
+	Once(eventName string, callback func(...interface{}))
 	On(eventName string, callback func(...interface{}))
 	Start(Renderer)
 	Shutdown()

lib/interfaces/renderer.go

@@ -8,7 +8,6 @@ import (
 type Renderer interface {
 	Initialise(AppConfig, IPCManager, EventManager) error
 	Run() error
-	EnableConsole()
 
 	// Binding
 	NewBinding(bindingName string) error
@@ -23,6 +22,10 @@ type Renderer interface {
 
 	// Window Runtime
 	SetColour(string) error
+
+	SetMinSize(width, height int)
+	SetMaxSize(width, height int)
+
 	Fullscreen()
 	UnFullscreen()
 	SetTitle(title string)

lib/interfaces/runtime.go

@@ -1,4 +1,4 @@
 package interfaces
 
 // Runtime interface
-type Runtime interface {}
+type Runtime interface{}

lib/renderer/bridge/bridge.go

@@ -56,10 +56,6 @@ func (h *Bridge) Initialise(appConfig interfaces.AppConfig, ipcManager interface
 	return nil
 }
 
-// EnableConsole not needed for bridge!
-func (h *Bridge) EnableConsole() {
-}
-
 func (h *Bridge) wsBridgeHandler(w http.ResponseWriter, r *http.Request) {
 	conn, err := websocket.Upgrade(w, r, w.Header(), 1024, 1024)
 	if err != nil {
@@ -190,6 +186,18 @@ func (h *Bridge) SetColour(colour string) error {
 	return nil
 }
 
+// SetMinSize is unsupported for Bridge but required
+// for the Renderer interface
+func (h *Bridge) SetMinSize(width, height int) {
+	h.log.Warn("SetMinSize() unsupported in bridge mode")
+}
+
+// SetMaxSize is unsupported for Bridge but required
+// for the Renderer interface
+func (h *Bridge) SetMaxSize(width, height int) {
+	h.log.Warn("SetMaxSize() unsupported in bridge mode")
+}
+
 // Fullscreen is unsupported for Bridge but required
 // for the Renderer interface
 func (h *Bridge) Fullscreen() {

lib/renderer/bridge/renderer-mewn.go

@@ -1,9 +0,0 @@
-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

@@ -2,10 +2,10 @@ package renderer
 
 import (
 	"time"
-	"unsafe"
+
+	"github.com/wailsapp/wails/runtime"
 
 	"github.com/gorilla/websocket"
-	"github.com/leaanthony/mewn"
 	"github.com/wailsapp/wails/lib/interfaces"
 	"github.com/wailsapp/wails/lib/logger"
 )
@@ -50,7 +50,7 @@ func (s *session) Identifier() string {
 
 func (s *session) sendMessage(msg string) error {
 	if !s.done {
-		s.writeChan <- *(*[]byte)(unsafe.Pointer(&msg))
+		s.writeChan <- []byte(msg)
 	}
 	return nil
 }
@@ -59,8 +59,7 @@ 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)
+	s.evalJS(runtime.WailsJS, wailsRuntimeMessage)
 
 	// Inject bindings
 	for _, binding := range s.bindingCache {

lib/renderer/webview.go

@@ -8,8 +8,9 @@ import (
 	"sync"
 	"time"
 
+	"github.com/wailsapp/wails/runtime"
+
 	"github.com/go-playground/colors"
-	"github.com/leaanthony/mewn"
 	"github.com/wailsapp/wails/lib/interfaces"
 	"github.com/wailsapp/wails/lib/logger"
 	"github.com/wailsapp/wails/lib/messages"
@@ -18,14 +19,18 @@ import (
 
 // WebView defines the main webview application window
 // Default values in []
+
+// UseFirebug indicates whether to inject the firebug console
+var UseFirebug = ""
+
 type WebView struct {
-	window        wv.WebView // The webview object
-	ipc           interfaces.IPCManager
-	log           *logger.CustomLogger
-	config        interfaces.AppConfig
-	eventManager  interfaces.EventManager
-	bindingCache  []string
-	enableConsole bool
+	window       wv.WebView // The webview object
+	ipc          interfaces.IPCManager
+	log          *logger.CustomLogger
+	config       interfaces.AppConfig
+	eventManager interfaces.EventManager
+	bindingCache []string
+	maximumSizeSet bool
 }
 
 // NewWebView returns a new WebView struct
@@ -49,18 +54,63 @@ func (w *WebView) Initialise(config interfaces.AppConfig, ipc interfaces.IPCMana
 	// Save the config
 	w.config = config
 
+	width := config.GetWidth()
+	height := config.GetHeight()
+
+	// Clamp width and height
+	minWidth, minHeight := config.GetMinWidth(), config.GetMinHeight()
+	maxWidth, maxHeight := config.GetMaxWidth(), config.GetMaxHeight()
+	setMinSize := minWidth != -1 && minHeight != -1
+	setMaxSize := maxWidth != -1 && maxHeight != -1
+
+	if setMinSize {
+		if width < minWidth {
+			width = minWidth
+		}
+		if height < minHeight {
+			height = minHeight
+		}
+	}
+
+	if setMaxSize {
+		if width > maxWidth {
+			width = maxWidth
+		}
+		if height > maxHeight {
+			height = maxHeight
+		}
+	}
+
 	// Create the WebView instance
 	w.window = wv.NewWebview(wv.Settings{
-		Width:     config.GetWidth(),
-		Height:    config.GetHeight(),
+		Width:     width,
+		Height:    height,
 		Title:     config.GetTitle(),
 		Resizable: config.GetResizable(),
-		URL:       config.GetDefaultHTML(),
+		URL:       config.GetHTML(),
 		Debug:     !config.GetDisableInspector(),
 		ExternalInvokeCallback: func(_ wv.WebView, message string) {
 			w.ipc.Dispatch(message, w.callback)
 		},
 	})
+		fmt.Println("Control")
+
+	// Set minimum and maximum sizes
+	if setMinSize {
+		w.SetMinSize(minWidth, minHeight)
+	}
+	if setMaxSize {
+		w.SetMaxSize(maxWidth, maxHeight)
+		fmt.Println("Max")
+	}
+
+	// Set minimum and maximum sizes
+	if setMinSize {
+		w.SetMinSize(minWidth, minHeight)
+	}
+	if setMaxSize {
+		w.SetMaxSize(maxWidth, maxHeight)
+	}
 
 	// SignalManager.OnExit(w.Exit)
 
@@ -71,6 +121,7 @@ func (w *WebView) Initialise(config interfaces.AppConfig, ipc interfaces.IPCMana
 	}
 
 	w.log.Info("Initialised")
+
 	return nil
 }
 
@@ -104,11 +155,6 @@ func (w *WebView) evalJS(js string) error {
 	return nil
 }
 
-// EnableConsole enables the console!
-func (w *WebView) EnableConsole() {
-	w.enableConsole = true
-}
-
 // Escape the Javascripts!
 func escapeJS(js string) (string, error) {
 	result := strings.Replace(js, "\\", "\\\\", -1)
@@ -179,15 +225,14 @@ func (w *WebView) Run() error {
 	w.log.Info("Running...")
 
 	// Inject firebug in debug mode on Windows
-	if w.enableConsole {
-		w.log.Debug("Enabling Wails console")
-		console := mewn.String("../../runtime/assets/console.js")
-		w.evalJS(console)
+	if UseFirebug != "" {
+		w.log.Debug("Injecting Firebug")
+		w.evalJS(`window.usefirebug=true;`)
 	}
 
 	// Runtime assets
-	wailsRuntime := mewn.String("../../runtime/assets/wails.js")
-	w.evalJS(wailsRuntime)
+	w.log.DebugFields("Injecting wails JS runtime", logger.Fields{"js": runtime.WailsJS})
+	w.evalJS(runtime.WailsJS)
 
 	// Ping the wait channel when the wails runtime is loaded
 	w.eventManager.On("wails:loaded", func(...interface{}) {
@@ -210,10 +255,9 @@ func (w *WebView) Run() error {
 				w.injectCSS(w.config.GetCSS())
 			} else {
 				// Use default wails css
-				w.log.Debug("Injecting Default Wails CSS")
-				defaultCSS := mewn.String("../../runtime/assets/wails.css")
 
-				w.injectCSS(defaultCSS)
+				w.log.Debug("Injecting Default Wails CSS: " + runtime.WailsCSS)
+				w.injectCSS(runtime.WailsCSS)
 			}
 
 			// Inject user JS
@@ -259,6 +303,9 @@ func (w *WebView) SelectFile(title string, filter string) string {
 			wg.Done()
 		})
 	}()
+
+	defer w.focus() // Ensure the main window is put back into focus afterwards
+
 	wg.Wait()
 	return result
 }
@@ -277,6 +324,9 @@ func (w *WebView) SelectDirectory() string {
 			wg.Done()
 		})
 	}()
+
+	defer w.focus() // Ensure the main window is put back into focus afterwards
+
 	wg.Wait()
 	return result
 }
@@ -295,10 +345,20 @@ func (w *WebView) SelectSaveFile(title string, filter string) string {
 			wg.Done()
 		})
 	}()
+
+	defer w.focus() // Ensure the main window is put back into focus afterwards
+
 	wg.Wait()
 	return result
 }
 
+// focus puts the main window into focus
+func (w *WebView) focus() {
+	w.window.Dispatch(func() {
+		w.window.Focus()
+	})
+}
+
 // callback sends a callback to the frontend
 func (w *WebView) callback(data string) error {
 	callbackCMD := fmt.Sprintf("window.wails._.Callback('%s');", data)
@@ -340,11 +400,37 @@ func (w *WebView) NotifyEvent(event *messages.EventData) error {
 	return w.evalJS(message)
 }
 
+// SetMinSize sets the minimum size of a resizable window
+func (w *WebView) SetMinSize(width, height int) {
+	if w.config.GetResizable() == false {
+		w.log.Warn("Cannot call SetMinSize() - App.Resizable = false")
+		return
+	}
+	w.window.Dispatch(func() {
+		w.window.SetMinSize(width, height)
+	})
+}
+
+// SetMaxSize sets the maximum size of a resizable window
+func (w *WebView) SetMaxSize(width, height int) {
+	if w.config.GetResizable() == false {
+		w.log.Warn("Cannot call SetMaxSize() - App.Resizable = false")
+		return
+	}
+	w.maximumSizeSet = true
+	w.window.Dispatch(func() {
+		w.window.SetMaxSize(width, height)
+	})
+}
+
 // Fullscreen makes the main window go fullscreen
 func (w *WebView) Fullscreen() {
 	if w.config.GetResizable() == false {
 		w.log.Warn("Cannot call Fullscreen() - App.Resizable = false")
 		return
+	} else if w.maximumSizeSet {
+		w.log.Warn("Cannot call Fullscreen() - Maximum size of window set")
+		return
 	}
 	w.window.Dispatch(func() {
 		w.window.SetFullscreen(true)

lib/renderer/webview/memory.go

@@ -1,27 +0,0 @@
-package webview
-
-/*
-#include <stdlib.h>
-*/
-import "C"
-
-import "unsafe"
-
-// This is our allocated C Memory
-var memory []unsafe.Pointer
-
-func saveMemoryReference(mem unsafe.Pointer) {
-	memory = append(memory, mem)
-}
-
-func freeMemory() {
-	for _, mem := range memory {
-		C.free(mem)
-	}
-}
-
-func string2CString(str string) *C.char {
-	result := C.CString(str)
-	saveMemoryReference(unsafe.Pointer(result))
-	return result
-}

lib/renderer/webview/webview.go

@@ -1,20 +1,178 @@
+// Package webview implements Go bindings to https://github.com/zserge/webview C library.
+// It is a modified version of webview.go from that repository
+// Bindings closely repeat the C APIs and include both, a simplified
+// single-function API to just open a full-screen webview window, and a more
+// advanced and featureful set of APIs, including Go-to-JavaScript bindings.
+//
+// The library uses gtk-webkit, Cocoa/Webkit and MSHTML (IE8..11) as a browser
+// engine and supports Linux, MacOS and Windows 7..10 respectively.
+//
 package webview
 
+/*
+#cgo linux openbsd freebsd CFLAGS: -DWEBVIEW_GTK=1 -Wno-deprecated-declarations
+#cgo linux openbsd freebsd pkg-config: gtk+-3.0 webkit2gtk-4.0
+
+#cgo windows CFLAGS: -DWEBVIEW_WINAPI=1 -std=c99
+#cgo windows LDFLAGS: -lole32 -lcomctl32 -loleaut32 -luuid -lgdi32
+
+#cgo darwin CFLAGS: -DWEBVIEW_COCOA=1 -x objective-c
+#cgo darwin LDFLAGS: -framework Cocoa -framework WebKit
+
+#include <stdlib.h>
+#include <stdint.h>
+#define WEBVIEW_STATIC
+#define WEBVIEW_IMPLEMENTATION
+#include "webview.h"
+
+extern void _webviewExternalInvokeCallback(void *, void *);
+
+static inline void CgoWebViewFree(void *w) {
+	free((void *)((struct webview *)w)->title);
+	free((void *)((struct webview *)w)->url);
+	free(w);
+}
+
+static inline void *CgoWebViewCreate(int width, int height, char *title, char *url, int resizable, int debug) {
+	struct webview *w = (struct webview *) calloc(1, sizeof(*w));
+	w->width = width;
+	w->height = height;
+	w->title = title;
+	w->url = url;
+	w->resizable = resizable;
+	w->debug = debug;
+	w->external_invoke_cb = (webview_external_invoke_cb_t) _webviewExternalInvokeCallback;
+	if (webview_init(w) != 0) {
+		CgoWebViewFree(w);
+		return NULL;
+	}
+	return (void *)w;
+}
+
+static inline int CgoWebViewLoop(void *w, int blocking) {
+	return webview_loop((struct webview *)w, blocking);
+}
+
+static inline void CgoWebViewTerminate(void *w) {
+	webview_terminate((struct webview *)w);
+}
+
+static inline void CgoWebViewExit(void *w) {
+	webview_exit((struct webview *)w);
+}
+
+static inline void CgoWebViewSetTitle(void *w, char *title) {
+	webview_set_title((struct webview *)w, title);
+}
+
+static inline void CgoWebViewFocus(void *w) {
+	webview_focus((struct webview *)w);
+}
+
+static inline void CgoWebViewMinSize(void *w, int width, int height) {
+	webview_minsize((struct webview *)w, width, height);
+}
+
+static inline void CgoWebViewMaxSize(void *w, int width, int height) {
+	webview_maxsize((struct webview *)w, width, height);
+}
+
+static inline void CgoWebViewSetFullscreen(void *w, int fullscreen) {
+	webview_set_fullscreen((struct webview *)w, fullscreen);
+}
+
+static inline void CgoWebViewSetColor(void *w, uint8_t r, uint8_t g, uint8_t b, uint8_t a) {
+	webview_set_color((struct webview *)w, r, g, b, a);
+}
+
+static inline void CgoDialog(void *w, int dlgtype, int flags,
+char *title, char *arg, char *res, size_t ressz, char *filter) {
+	webview_dialog(w, dlgtype, flags,
+	(const char*)title, (const char*) arg, res, ressz, filter);
+}
+
+static inline int CgoWebViewEval(void *w, char *js) {
+	return webview_eval((struct webview *)w, js);
+}
+
+static inline void CgoWebViewInjectCSS(void *w, char *css) {
+	webview_inject_css((struct webview *)w, css);
+}
+
+extern void _webviewDispatchGoCallback(void *);
+static inline void _webview_dispatch_cb(struct webview *w, void *arg) {
+	_webviewDispatchGoCallback(arg);
+}
+static inline void CgoWebViewDispatch(void *w, uintptr_t arg) {
+	webview_dispatch((struct webview *)w, _webview_dispatch_cb, (void *)arg);
+}
+*/
 import "C"
-
-// DialogType is an enumeration of all supported system dialog types
-type DialogType int
-
-const (
-	// DialogTypeOpen is a system file open dialog
-	DialogTypeOpen DialogType = iota
-	// DialogTypeSave is a system file save dialog
-	DialogTypeSave
-	// DialogTypeAlert is a system alert dialog (message box)
-	DialogTypeAlert
+import (
+	"errors"
+	"runtime"
+	"sync"
+	"unsafe"
 )
 
-// WebView is our webview interface
+func init() {
+	// Ensure that main.main is called from the main thread
+	runtime.LockOSThread()
+}
+
+// Open is a simplified API to open a single native window with a full-size webview in
+// it. It can be helpful if you want to communicate with the core app using XHR
+// or WebSockets (as opposed to using JavaScript bindings).
+//
+// Window appearance can be customized using title, width, height and resizable parameters.
+// URL must be provided and can user either a http or https protocol, or be a
+// local file:// URL. On some platforms "data:" URLs are also supported
+// (Linux/MacOS).
+func Open(title, url string, w, h int, resizable bool) error {
+	titleStr := C.CString(title)
+	defer C.free(unsafe.Pointer(titleStr))
+	urlStr := C.CString(url)
+	defer C.free(unsafe.Pointer(urlStr))
+	resize := C.int(0)
+	if resizable {
+		resize = C.int(1)
+	}
+
+	r := C.webview(titleStr, urlStr, C.int(w), C.int(h), resize)
+	if r != 0 {
+		return errors.New("failed to create webview")
+	}
+	return nil
+}
+
+// ExternalInvokeCallbackFunc is a function type that is called every time
+// "window.external.invoke()" is called from JavaScript. Data is the only
+// obligatory string parameter passed into the "invoke(data)" function from
+// JavaScript. To pass more complex data serialized JSON or base64 encoded
+// string can be used.
+type ExternalInvokeCallbackFunc func(w WebView, data string)
+
+// Settings is a set of parameters to customize the initial WebView appearance
+// and behavior. It is passed into the webview.New() constructor.
+type Settings struct {
+	// WebView main window title
+	Title string
+	// URL to open in a webview
+	URL string
+	// Window width in pixels
+	Width int
+	// Window height in pixels
+	Height int
+	// Allows/disallows window resizing
+	Resizable bool
+	// Enable debugging tools (Linux/BSD/MacOS, on Windows use Firebug)
+	Debug bool
+	// A callback that is executed when JavaScript calls "window.external.invoke()"
+	ExternalInvokeCallback ExternalInvokeCallbackFunc
+}
+
+// WebView is an interface that wraps the basic methods for controlling the UI
+// loop, handling multithreading and providing JavaScript bindings.
 type WebView interface {
 	// Run() starts the main UI loop until the user closes the webview window or
 	// Terminate() is called.
@@ -24,6 +182,16 @@ type WebView interface {
 	// SetTitle() changes window title. This method must be called from the main
 	// thread only. See Dispatch() for more details.
 	SetTitle(title string)
+
+	// Focus() puts the main window into focus
+	Focus()
+
+	// SetMinSize() sets the minimum size of the window
+	SetMinSize(width, height int)
+
+	// SetMaxSize() sets the maximum size of the window
+	SetMaxSize(width, height int)
+
 	// SetFullscreen() controls window full-screen mode. This method must be
 	// called from the main thread only. See Dispatch() for more details.
 	SetFullscreen(fullscreen bool)
@@ -53,21 +221,191 @@ type WebView interface {
 	Exit()
 }
 
-type ExternalInvokeCallbackFunc func(w WebView, data string)
+// DialogType is an enumeration of all supported system dialog types
+type DialogType int
 
-type Settings struct {
-	// WebView main window title
-	Title string
-	// URL to open in a webview
-	URL string
-	// Window width in pixels
-	Width int
-	// Window height in pixels
-	Height int
-	// Allows/disallows window resizing
-	Resizable bool
-	// Enable debugging tools (Linux/BSD/MacOS, on Windows use Firebug)
-	Debug bool
-	// A callback that is executed when JavaScript calls "window.external.invoke()"
-	ExternalInvokeCallback ExternalInvokeCallbackFunc
+const (
+	// DialogTypeOpen is a system file open dialog
+	DialogTypeOpen DialogType = iota
+	// DialogTypeSave is a system file save dialog
+	DialogTypeSave
+	// DialogTypeAlert is a system alert dialog (message box)
+	DialogTypeAlert
+)
+
+const (
+	// DialogFlagFile is a normal file picker dialog
+	DialogFlagFile = C.WEBVIEW_DIALOG_FLAG_FILE
+	// DialogFlagDirectory is an open directory dialog
+	DialogFlagDirectory = C.WEBVIEW_DIALOG_FLAG_DIRECTORY
+	// DialogFlagInfo is an info alert dialog
+	DialogFlagInfo = C.WEBVIEW_DIALOG_FLAG_INFO
+	// DialogFlagWarning is a warning alert dialog
+	DialogFlagWarning = C.WEBVIEW_DIALOG_FLAG_WARNING
+	// DialogFlagError is an error dialog
+	DialogFlagError = C.WEBVIEW_DIALOG_FLAG_ERROR
+)
+
+var (
+	m     sync.Mutex
+	index uintptr
+	fns   = map[uintptr]func(){}
+	cbs   = map[WebView]ExternalInvokeCallbackFunc{}
+)
+
+type webview struct {
+	w unsafe.Pointer
+}
+
+var _ WebView = &webview{}
+
+func boolToInt(b bool) int {
+	if b {
+		return 1
+	}
+	return 0
+}
+
+// NewWebview creates and opens a new webview window using the given settings. The
+// returned object implements the WebView interface. This function returns nil
+// if a window can not be created.
+func NewWebview(settings Settings) WebView {
+	if settings.Width == 0 {
+		settings.Width = 640
+	}
+	if settings.Height == 0 {
+		settings.Height = 480
+	}
+	if settings.Title == "" {
+		settings.Title = "WebView"
+	}
+	w := &webview{}
+	w.w = C.CgoWebViewCreate(C.int(settings.Width), C.int(settings.Height),
+		C.CString(settings.Title), C.CString(settings.URL),
+		C.int(boolToInt(settings.Resizable)), C.int(boolToInt(settings.Debug)))
+	m.Lock()
+	if settings.ExternalInvokeCallback != nil {
+		cbs[w] = settings.ExternalInvokeCallback
+	} else {
+		cbs[w] = func(w WebView, data string) {}
+	}
+	m.Unlock()
+	return w
+}
+
+func (w *webview) Loop(blocking bool) bool {
+	block := C.int(0)
+	if blocking {
+		block = 1
+	}
+	return C.CgoWebViewLoop(w.w, block) == 0
+}
+
+func (w *webview) Run() {
+	for w.Loop(true) {
+	}
+}
+
+func (w *webview) Exit() {
+	C.CgoWebViewExit(w.w)
+}
+
+func (w *webview) Dispatch(f func()) {
+	m.Lock()
+	for ; fns[index] != nil; index++ {
+	}
+	fns[index] = f
+	m.Unlock()
+	C.CgoWebViewDispatch(w.w, C.uintptr_t(index))
+}
+
+func (w *webview) SetTitle(title string) {
+	p := C.CString(title)
+	defer C.free(unsafe.Pointer(p))
+	C.CgoWebViewSetTitle(w.w, p)
+}
+
+func (w *webview) SetColor(r, g, b, a uint8) {
+	C.CgoWebViewSetColor(w.w, C.uint8_t(r), C.uint8_t(g), C.uint8_t(b), C.uint8_t(a))
+}
+
+func (w *webview) Focus() {
+	C.CgoWebViewFocus(w.w)
+}
+
+func (w *webview) SetMinSize(width, height int) {
+	C.CgoWebViewMinSize(w.w, C.int(width), C.int(height))
+}
+
+func (w *webview) SetMaxSize(width, height int) {
+	C.CgoWebViewMaxSize(w.w, C.int(width), C.int(height))
+}
+
+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, filter string) string {
+	const maxPath = 4096
+	titlePtr := C.CString(title)
+	defer C.free(unsafe.Pointer(titlePtr))
+	argPtr := C.CString(arg)
+	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), filterPtr)
+	return C.GoString(resultPtr)
+}
+
+func (w *webview) Eval(js string) error {
+	p := C.CString(js)
+	defer C.free(unsafe.Pointer(p))
+	switch C.CgoWebViewEval(w.w, p) {
+	case -1:
+		return errors.New("evaluation failed")
+	}
+	return nil
+}
+
+func (w *webview) InjectCSS(css string) {
+	p := C.CString(css)
+	defer C.free(unsafe.Pointer(p))
+	C.CgoWebViewInjectCSS(w.w, p)
+}
+
+func (w *webview) Terminate() {
+	C.CgoWebViewTerminate(w.w)
+}
+
+//export _webviewDispatchGoCallback
+func _webviewDispatchGoCallback(index unsafe.Pointer) {
+	var f func()
+	m.Lock()
+	f = fns[uintptr(index)]
+	delete(fns, uintptr(index))
+	m.Unlock()
+	if f != nil {
+		f()
+	}
+}
+
+//export _webviewExternalInvokeCallback
+func _webviewExternalInvokeCallback(w unsafe.Pointer, data unsafe.Pointer) {
+	m.Lock()
+	var (
+		cb ExternalInvokeCallbackFunc
+		wv WebView
+	)
+	for wv, cb = range cbs {
+		if wv.(*webview).w == w {
+			break
+		}
+	}
+	m.Unlock()
+	if cb != nil {
+		cb(wv, C.GoString((*C.char)(data)))
+	}
 }

lib/renderer/webview/webview.h

@@ -39,6 +39,28 @@ extern "C"
 #include <stdlib.h>
 #include <string.h>
 
+#if defined(WEBVIEW_GTK)
+#include <JavaScriptCore/JavaScript.h>
+#include <gtk/gtk.h>
+#include <webkit2/webkit2.h>
+
+  struct webview_priv
+  {
+    GtkWidget *window;
+    GtkWidget *scroller;
+    GtkWidget *webview;
+    GtkWidget *inspector_window;
+    GAsyncQueue *queue;
+    int ready;
+    int js_busy;
+    int should_exit;
+    
+    int min_width;
+    int min_height;
+    int max_width;
+    int max_height;
+  };
+#elif defined(WEBVIEW_WINAPI)
 #define CINTERFACE
 #include <windows.h>
 
@@ -58,7 +80,28 @@ struct webview_priv
   DWORD saved_style;
   DWORD saved_ex_style;
   RECT saved_rect;
+
+  int min_width;
+  int min_height;
+  int max_width;
+  int max_height;
 };
+#elif defined(WEBVIEW_COCOA)
+#import <Cocoa/Cocoa.h>
+#import <WebKit/WebKit.h>
+#import <objc/runtime.h>
+
+struct webview_priv
+{
+  NSAutoreleasePool *pool;
+  NSWindow *window;
+  WebView *webview;
+  id delegate;
+  int should_exit;
+};
+#else
+#error "Define one of: WEBVIEW_GTK, WEBVIEW_COCOA or WEBVIEW_WINAPI"
+#endif
 
   struct webview;
 
@@ -135,6 +178,9 @@ struct webview_priv
   WEBVIEW_API int webview_eval(struct webview *w, const char *js);
   WEBVIEW_API int webview_inject_css(struct webview *w, const char *css);
   WEBVIEW_API void webview_set_title(struct webview *w, const char *title);
+  WEBVIEW_API void webview_focus(struct webview *w);
+  WEBVIEW_API void webview_minsize(struct webview *w, int width, int height);  
+  WEBVIEW_API void webview_maxsize(struct webview *w, int width, int height);
   WEBVIEW_API void webview_set_fullscreen(struct webview *w, int fullscreen);
   WEBVIEW_API void webview_set_color(struct webview *w, uint8_t r, uint8_t g,
                                      uint8_t b, uint8_t a);
@@ -149,6 +195,9 @@ struct webview_priv
   WEBVIEW_API void webview_debug(const char *format, ...);
   WEBVIEW_API void webview_print_log(const char *s);
 
+#ifdef WEBVIEW_IMPLEMENTATION
+#undef WEBVIEW_IMPLEMENTATION
+
   WEBVIEW_API int webview(const char *title, const char *url, int width,
                           int height, int resizable)
   {
@@ -228,6 +277,351 @@ struct webview_priv
     return r;
   }
 
+#if defined(WEBVIEW_GTK)
+  static void external_message_received_cb(WebKitUserContentManager *m,
+                                           WebKitJavascriptResult *r,
+                                           gpointer arg)
+  {
+    (void)m;
+    struct webview *w = (struct webview *)arg;
+    if (w->external_invoke_cb == NULL)
+    {
+      return;
+    }
+    JSGlobalContextRef context = webkit_javascript_result_get_global_context(r);
+    JSValueRef value = webkit_javascript_result_get_value(r);
+    JSStringRef js = JSValueToStringCopy(context, value, NULL);
+    size_t n = JSStringGetMaximumUTF8CStringSize(js);
+    char *s = g_new(char, n);
+    JSStringGetUTF8CString(js, s, n);
+    w->external_invoke_cb(w, s);
+    JSStringRelease(js);
+    g_free(s);
+  }
+
+  static void webview_load_changed_cb(WebKitWebView *webview,
+                                      WebKitLoadEvent event, gpointer arg)
+  {
+    (void)webview;
+    struct webview *w = (struct webview *)arg;
+    if (event == WEBKIT_LOAD_FINISHED)
+    {
+      w->priv.ready = 1;
+    }
+  }
+
+  static void webview_destroy_cb(GtkWidget *widget, gpointer arg)
+  {
+    (void)widget;
+    struct webview *w = (struct webview *)arg;
+    webview_terminate(w);
+  }
+
+  static gboolean webview_context_menu_cb(WebKitWebView *webview,
+                                          GtkWidget *default_menu,
+                                          WebKitHitTestResult *hit_test_result,
+                                          gboolean triggered_with_keyboard,
+                                          gpointer userdata)
+  {
+    (void)webview;
+    (void)default_menu;
+    (void)hit_test_result;
+    (void)triggered_with_keyboard;
+    (void)userdata;
+    return TRUE;
+  }
+
+  WEBVIEW_API int webview_init(struct webview *w)
+  {
+    if (gtk_init_check(0, NULL) == FALSE)
+    {
+      return -1;
+    }
+
+    w->priv.ready = 0;
+    w->priv.should_exit = 0;
+    w->priv.queue = g_async_queue_new();
+    w->priv.window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
+    
+    w->priv.min_width = -1;
+    w->priv.min_height = -1;
+    w->priv.max_width = -1;
+    w->priv.max_height = -1;
+    
+    gtk_window_set_title(GTK_WINDOW(w->priv.window), w->title);
+
+    if (w->resizable)
+    {
+      gtk_window_set_default_size(GTK_WINDOW(w->priv.window), w->width,
+                                  w->height);
+    }
+    else
+    {
+      gtk_widget_set_size_request(w->priv.window, w->width, w->height);
+    }
+    gtk_window_set_resizable(GTK_WINDOW(w->priv.window), !!w->resizable);
+    gtk_window_set_position(GTK_WINDOW(w->priv.window), GTK_WIN_POS_CENTER);
+
+    w->priv.scroller = gtk_scrolled_window_new(NULL, NULL);
+    gtk_container_add(GTK_CONTAINER(w->priv.window), w->priv.scroller);
+
+    WebKitUserContentManager *m = webkit_user_content_manager_new();
+    webkit_user_content_manager_register_script_message_handler(m, "external");
+    g_signal_connect(m, "script-message-received::external",
+                     G_CALLBACK(external_message_received_cb), w);
+
+    w->priv.webview = webkit_web_view_new_with_user_content_manager(m);
+    webkit_web_view_load_uri(WEBKIT_WEB_VIEW(w->priv.webview),
+                             webview_check_url(w->url));
+    g_signal_connect(G_OBJECT(w->priv.webview), "load-changed",
+                     G_CALLBACK(webview_load_changed_cb), w);
+    gtk_container_add(GTK_CONTAINER(w->priv.scroller), w->priv.webview);
+
+    if (w->debug)
+    {
+      WebKitSettings *settings =
+          webkit_web_view_get_settings(WEBKIT_WEB_VIEW(w->priv.webview));
+      webkit_settings_set_enable_write_console_messages_to_stdout(settings, true);
+      webkit_settings_set_enable_developer_extras(settings, true);
+      webkit_settings_set_hardware_acceleration_policy(settings, WEBKIT_HARDWARE_ACCELERATION_POLICY_ALWAYS);
+    }
+    else
+    {
+      g_signal_connect(G_OBJECT(w->priv.webview), "context-menu",
+                       G_CALLBACK(webview_context_menu_cb), w);
+    }
+
+    gtk_widget_show_all(w->priv.window);
+
+    webkit_web_view_run_javascript(
+        WEBKIT_WEB_VIEW(w->priv.webview),
+        "window.external={invoke:function(x){"
+        "window.webkit.messageHandlers.external.postMessage(x);}}",
+        NULL, NULL, NULL);
+
+    g_signal_connect(G_OBJECT(w->priv.window), "destroy",
+                     G_CALLBACK(webview_destroy_cb), w);
+    return 0;
+  }
+
+  WEBVIEW_API int webview_loop(struct webview *w, int blocking)
+  {
+    gtk_main_iteration_do(blocking);
+    return w->priv.should_exit;
+  }
+
+  WEBVIEW_API void webview_set_title(struct webview *w, const char *title)
+  {
+    gtk_window_set_title(GTK_WINDOW(w->priv.window), title);
+  }
+
+  WEBVIEW_API void webview_focus(struct webview *w)
+  {
+    gtk_window_present(GTK_WINDOW(w->priv.window));
+  }
+
+  WEBVIEW_API void webview_minsize(struct webview *w, int width, int height) {
+  
+    w->priv.min_width = width;
+    w->priv.min_height = height;
+
+    GdkGeometry hints;
+    GdkWindowHints usedHints = (GdkWindowHints) GDK_HINT_MIN_SIZE;
+    
+    hints.min_width = w->priv.min_width;
+    hints.min_height = w->priv.min_height;
+    if (w->priv.max_width != -1) {
+      hints.max_width = w->priv.max_width;
+      hints.max_height = w->priv.max_height;
+      usedHints = (GdkWindowHints)(GDK_HINT_MIN_SIZE | GDK_HINT_MAX_SIZE);
+    }
+    
+    gtk_window_set_geometry_hints(GTK_WINDOW(w->priv.window), w->priv.window, &hints, usedHints);
+  }
+
+  WEBVIEW_API void webview_maxsize(struct webview *w, int width, int height) {
+    
+    w->priv.max_width = width;
+    w->priv.max_height = height;
+  
+    GdkGeometry hints;
+    GdkWindowHints usedHints = (GdkWindowHints) GDK_HINT_MAX_SIZE;
+    
+    if (w->priv.min_width != -1) {
+      hints.min_width = w->priv.min_width;
+      hints.min_height = w->priv.min_height;
+      usedHints = (GdkWindowHints)(GDK_HINT_MIN_SIZE | GDK_HINT_MAX_SIZE);
+    }
+    hints.max_width = w->priv.max_width;
+    hints.max_height = w->priv.max_height;
+    
+    gtk_window_set_geometry_hints(GTK_WINDOW(w->priv.window), w->priv.window, &hints, usedHints);
+  }
+
+  WEBVIEW_API void webview_set_fullscreen(struct webview *w, int fullscreen)
+  {
+    if (fullscreen)
+    {
+      gtk_window_fullscreen(GTK_WINDOW(w->priv.window));
+    }
+    else
+    {
+      gtk_window_unfullscreen(GTK_WINDOW(w->priv.window));
+    }
+  }
+
+  WEBVIEW_API void webview_set_color(struct webview *w, uint8_t r, uint8_t g,
+                                     uint8_t b, uint8_t a)
+  {
+    GdkRGBA color = {r / 255.0, g / 255.0, b / 255.0, a / 255.0};
+    webkit_web_view_set_background_color(WEBKIT_WEB_VIEW(w->priv.webview),
+                                         &color);
+  }
+
+  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 *filter)
+  {
+    GtkWidget *dlg;
+    if (result != NULL)
+    {
+      result[0] = '\0';
+    }
+    if (dlgtype == WEBVIEW_DIALOG_TYPE_OPEN ||
+        dlgtype == WEBVIEW_DIALOG_TYPE_SAVE)
+    {
+      dlg = gtk_file_chooser_dialog_new(
+          title, GTK_WINDOW(w->priv.window),
+          (dlgtype == WEBVIEW_DIALOG_TYPE_OPEN
+               ? (flags & WEBVIEW_DIALOG_FLAG_DIRECTORY
+                      ? GTK_FILE_CHOOSER_ACTION_SELECT_FOLDER
+                      : GTK_FILE_CHOOSER_ACTION_OPEN)
+               : GTK_FILE_CHOOSER_ACTION_SAVE),
+          "_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);
+      gtk_file_chooser_set_do_overwrite_confirmation(GTK_FILE_CHOOSER(dlg), TRUE);
+      gtk_file_chooser_set_create_folders(GTK_FILE_CHOOSER(dlg), TRUE);
+      gint response = gtk_dialog_run(GTK_DIALOG(dlg));
+      if (response == GTK_RESPONSE_ACCEPT)
+      {
+        gchar *filename = gtk_file_chooser_get_filename(GTK_FILE_CHOOSER(dlg));
+        g_strlcpy(result, filename, resultsz);
+        g_free(filename);
+      }
+      gtk_widget_destroy(dlg);
+    }
+    else if (dlgtype == WEBVIEW_DIALOG_TYPE_ALERT)
+    {
+      GtkMessageType type = GTK_MESSAGE_OTHER;
+      switch (flags & WEBVIEW_DIALOG_FLAG_ALERT_MASK)
+      {
+      case WEBVIEW_DIALOG_FLAG_INFO:
+        type = GTK_MESSAGE_INFO;
+        break;
+      case WEBVIEW_DIALOG_FLAG_WARNING:
+        type = GTK_MESSAGE_WARNING;
+        break;
+      case WEBVIEW_DIALOG_FLAG_ERROR:
+        type = GTK_MESSAGE_ERROR;
+        break;
+      }
+      dlg = gtk_message_dialog_new(GTK_WINDOW(w->priv.window), GTK_DIALOG_MODAL,
+                                   type, GTK_BUTTONS_OK, "%s", title);
+      gtk_message_dialog_format_secondary_text(GTK_MESSAGE_DIALOG(dlg), "%s",
+                                               arg);
+      gtk_dialog_run(GTK_DIALOG(dlg));
+      gtk_widget_destroy(dlg);
+    }
+  }
+
+  static void webview_eval_finished(GObject *object, GAsyncResult *result,
+                                    gpointer userdata)
+  {
+    (void)object;
+    (void)result;
+    struct webview *w = (struct webview *)userdata;
+    w->priv.js_busy = 0;
+  }
+
+  WEBVIEW_API int webview_eval(struct webview *w, const char *js)
+  {
+    while (w->priv.ready == 0)
+    {
+      g_main_context_iteration(NULL, TRUE);
+    }
+    w->priv.js_busy = 1;
+    webkit_web_view_run_javascript(WEBKIT_WEB_VIEW(w->priv.webview), js, NULL,
+                                   webview_eval_finished, w);
+    while (w->priv.js_busy)
+    {
+      g_main_context_iteration(NULL, TRUE);
+    }
+    return 0;
+  }
+
+  static gboolean webview_dispatch_wrapper(gpointer userdata)
+  {
+    struct webview *w = (struct webview *)userdata;
+    for (;;)
+    {
+      struct webview_dispatch_arg *arg =
+          (struct webview_dispatch_arg *)g_async_queue_try_pop(w->priv.queue);
+      if (arg == NULL)
+      {
+        break;
+      }
+      (arg->fn)(w, arg->arg);
+      g_free(arg);
+    }
+    return FALSE;
+  }
+
+  WEBVIEW_API void webview_dispatch(struct webview *w, webview_dispatch_fn fn,
+                                    void *arg)
+  {
+    struct webview_dispatch_arg *context =
+        (struct webview_dispatch_arg *)g_new(struct webview_dispatch_arg *, 1);
+    context->w = w;
+    context->arg = arg;
+    context->fn = fn;
+    g_async_queue_lock(w->priv.queue);
+    g_async_queue_push_unlocked(w->priv.queue, context);
+    if (g_async_queue_length_unlocked(w->priv.queue) == 1)
+    {
+      gdk_threads_add_idle(webview_dispatch_wrapper, w);
+    }
+    g_async_queue_unlock(w->priv.queue);
+  }
+
+  WEBVIEW_API void webview_terminate(struct webview *w)
+  {
+    w->priv.should_exit = 1;
+  }
+
+  WEBVIEW_API void webview_exit(struct webview *w) { (void)w; }
+  WEBVIEW_API void webview_print_log(const char *s)
+  {
+    fprintf(stderr, "%s\n", s);
+  }
+
+#endif /* WEBVIEW_GTK */
+
 #if defined(WEBVIEW_WINAPI)
 
 #pragma comment(lib, "user32.lib")
@@ -999,7 +1393,39 @@ struct webview_priv
     case WM_CREATE:
       w = (struct webview *)((CREATESTRUCT *)lParam)->lpCreateParams;
       w->priv.hwnd = hwnd;
+
       return EmbedBrowserObject(w);
+    case WM_GETMINMAXINFO:
+    {
+      if (w != NULL) {
+        // get pixel density 
+        HDC hDC = GetDC(NULL);
+        double DPIScaleX = GetDeviceCaps(hDC, 88)/96.0;
+        double DPIScaleY = GetDeviceCaps(hDC, 90)/96.0;
+        ReleaseDC(NULL, hDC);
+      	
+        RECT rcClient, rcWind;
+        POINT ptDiff;
+        GetClientRect(hwnd, &rcClient);
+        GetWindowRect(hwnd, &rcWind);
+
+        int widthExtra = (rcWind.right - rcWind.left) - rcClient.right;
+        int heightExtra = (rcWind.bottom - rcWind.top) - rcClient.bottom;
+
+        LPMINMAXINFO lpMMI = (LPMINMAXINFO)lParam;
+      
+        if (w->priv.min_width != -1) {
+          lpMMI->ptMinTrackSize.x = w->priv.min_width * DPIScaleX + widthExtra;
+          lpMMI->ptMinTrackSize.y = w->priv.min_height * DPIScaleY + heightExtra;
+        }
+        if (w->priv.max_width != -1) {
+          lpMMI->ptMaxTrackSize.x = w->priv.max_width * DPIScaleX + widthExtra;
+          lpMMI->ptMaxTrackSize.y = w->priv.max_height * DPIScaleY + heightExtra;
+        }
+      }
+      
+      return 0;
+    }
     case WM_DESTROY:
       UnEmbedBrowserObject(w);
       PostQuitMessage(0);
@@ -1064,6 +1490,9 @@ struct webview_priv
 
   WEBVIEW_API int webview_init(struct webview *w)
   {
+    w->priv.min_width = -1;
+    w->priv.max_width = -1;
+
     WNDCLASSEX wc;
     HINSTANCE hInstance;
     DWORD style;
@@ -1309,6 +1738,21 @@ struct webview_priv
 #endif
   }
 
+  WEBVIEW_API void webview_focus(struct webview *w)
+  {
+    SetFocus(w->priv.hwnd);
+  }
+
+  WEBVIEW_API void webview_minsize(struct webview *w, int width, int height) {
+    w->priv.min_width = width;
+    w->priv.min_height = height;
+  }
+
+  WEBVIEW_API void webview_maxsize(struct webview *w, int width, int height) {
+    w->priv.max_width = width;
+    w->priv.max_height = height;
+  }
+
   WEBVIEW_API void webview_set_fullscreen(struct webview *w, int fullscreen)
   {
     if (w->priv.is_fullscreen == !!fullscreen)
@@ -1599,8 +2043,459 @@ struct webview_priv
   WEBVIEW_API void webview_exit(struct webview *w) { OleUninitialize(); }
   WEBVIEW_API void webview_print_log(const char *s) { OutputDebugString(s); }
 
+#endif /* WEBVIEW_WINAPI */
+
+#if defined(WEBVIEW_COCOA)
+#if (!defined MAC_OS_X_VERSION_10_12) || \
+    MAC_OS_X_VERSION_MAX_ALLOWED < MAC_OS_X_VERSION_10_12
+#define NSAlertStyleWarning NSWarningAlertStyle
+#define NSAlertStyleCritical NSCriticalAlertStyle
+#define NSWindowStyleMaskResizable NSResizableWindowMask
+#define NSWindowStyleMaskMiniaturizable NSMiniaturizableWindowMask
+#define NSWindowStyleMaskTitled NSTitledWindowMask
+#define NSWindowStyleMaskClosable NSClosableWindowMask
+#define NSWindowStyleMaskFullScreen NSFullScreenWindowMask
+#define NSEventMaskAny NSAnyEventMask
+#define NSEventModifierFlagCommand NSCommandKeyMask
+#define NSEventModifierFlagOption NSAlternateKeyMask
+#define NSAlertStyleInformational NSInformationalAlertStyle
+#endif /* MAC_OS_X_VERSION_10_12 */
+#if (!defined MAC_OS_X_VERSION_10_13) || \
+    MAC_OS_X_VERSION_MAX_ALLOWED < MAC_OS_X_VERSION_10_13
+#define NSModalResponseOK NSFileHandlingPanelOKButton
+#endif /* MAC_OS_X_VERSION_10_12, MAC_OS_X_VERSION_10_13 */
+  static void webview_window_will_close(id self, SEL cmd, id notification)
+  {
+    struct webview *w =
+        (struct webview *)objc_getAssociatedObject(self, "webview");
+    webview_terminate(w);
+  }
+
+  static BOOL webview_is_selector_excluded_from_web_script(id self, SEL cmd,
+                                                           SEL selector)
+  {
+    return selector != @selector(invoke:);
+  }
+
+  static NSString *webview_webscript_name_for_selector(id self, SEL cmd,
+                                                       SEL selector)
+  {
+    return selector == @selector(invoke:) ? @"invoke" : nil;
+  }
+
+  static void webview_did_clear_window_object(id self, SEL cmd, id webview,
+                                              id script, id frame)
+  {
+    [script setValue:self forKey:@"external"];
+  }
+
+  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, "");
+    filename[255] = '\0';
+    if (strlen(filename) > 0)
+    {
+      [listener chooseFilename:[NSString stringWithUTF8String:filename]];
+    }
+    else
+    {
+      [listener cancel];
+    }
+  }
+
+  static void webview_external_invoke(id self, SEL cmd, id arg)
+  {
+    struct webview *w =
+        (struct webview *)objc_getAssociatedObject(self, "webview");
+    if (w == NULL || w->external_invoke_cb == NULL)
+    {
+      return;
+    }
+    if ([arg isKindOfClass:[NSString class]] == NO)
+    {
+      return;
+    }
+    w->external_invoke_cb(w, [(NSString *)(arg) UTF8String]);
+  }
+
+  WEBVIEW_API int webview_init(struct webview *w)
+  {
+    w->priv.pool = [[NSAutoreleasePool alloc] init];
+    [NSApplication sharedApplication];
+
+    Class webViewDelegateClass =
+        objc_allocateClassPair([NSObject class], "WebViewDelegate", 0);
+    class_addMethod(webViewDelegateClass, sel_registerName("windowWillClose:"),
+                    (IMP)webview_window_will_close, "v@:@");
+    class_addMethod(object_getClass(webViewDelegateClass),
+                    sel_registerName("isSelectorExcludedFromWebScript:"),
+                    (IMP)webview_is_selector_excluded_from_web_script, "c@::");
+    class_addMethod(object_getClass(webViewDelegateClass),
+                    sel_registerName("webScriptNameForSelector:"),
+                    (IMP)webview_webscript_name_for_selector, "c@::");
+    class_addMethod(webViewDelegateClass,
+                    sel_registerName("webView:didClearWindowObject:forFrame:"),
+                    (IMP)webview_did_clear_window_object, "v@:@@@");
+    class_addMethod(
+        webViewDelegateClass,
+        sel_registerName("webView:runOpenPanelForFileButtonWithResultListener:"
+                         "allowMultipleFiles:"),
+        (IMP)webview_run_input_open_panel, "v@:@@c");
+    class_addMethod(webViewDelegateClass, sel_registerName("invoke:"),
+                    (IMP)webview_external_invoke, "v@:@");
+    objc_registerClassPair(webViewDelegateClass);
+
+    w->priv.delegate = [[webViewDelegateClass alloc] init];
+    objc_setAssociatedObject(w->priv.delegate, "webview", (id)(w),
+                             OBJC_ASSOCIATION_ASSIGN);
+
+    NSRect r = NSMakeRect(0, 0, w->width, w->height);
+    NSUInteger style = NSWindowStyleMaskTitled | NSWindowStyleMaskClosable |
+                       NSWindowStyleMaskMiniaturizable;
+    if (w->resizable)
+    {
+      style = style | NSWindowStyleMaskResizable;
+      // style = style | NSTexturedBackgroundWindowMask;
+      // style = style | NSUnifiedTitleAndToolbarWindowMask;
+    }
+
+    // Transparent title bar
+    // if (w->transparentTitlebar) {
+    //   style = style | NSFullSizeContentViewWindowMask | NSUnifiedTitleAndToolbarWindowMask | NSTexturedBackgroundWindowMask;
+    // }
+
+    w->priv.window = [[NSWindow alloc] initWithContentRect:r
+                                                 styleMask:style
+                                                   backing:NSBackingStoreBuffered
+                                                     defer:NO];
+    [w->priv.window autorelease];
+
+    // Title
+    NSString *nsTitle = [NSString stringWithUTF8String:w->title];
+    [w->priv.window setTitle:nsTitle];
+
+    [w->priv.window setDelegate:w->priv.delegate];
+    [w->priv.window center];
+
+    //  NSToolbar *toolbar = [[NSToolbar alloc] initWithIdentifier:@"wat"];
+    //   toolbar.showsBaselineSeparator = NO;
+    //   [w->priv.window setToolbar:toolbar];
+
+    // if (w->transparentTitlebar) {
+
+    //   // Configure window look with hidden toolbar
+    //   [w->priv.window setTitlebarAppearsTransparent:YES];
+    //   [w->priv.window setTitleVisibility:NSWindowTitleHidden];
+    //   // w->priv.window.isMovableByWindowBackground = true;
+    // }
+
+    [[NSUserDefaults standardUserDefaults] setBool:!!w->debug
+                                            forKey:@"WebKitDeveloperExtras"];
+    [[NSUserDefaults standardUserDefaults] synchronize];
+    w->priv.webview =
+        [[WebView alloc] initWithFrame:r
+                             frameName:@"WebView"
+                             groupName:nil];
+    NSURL *nsURL = [NSURL
+        URLWithString:[NSString stringWithUTF8String:webview_check_url(w->url)]];
+    [[w->priv.webview mainFrame] loadRequest:[NSURLRequest requestWithURL:nsURL]];
+
+    [w->priv.webview setAutoresizesSubviews:YES];
+    [w->priv.webview
+        setAutoresizingMask:NSViewWidthSizable | NSViewHeightSizable];
+    w->priv.webview.frameLoadDelegate = w->priv.delegate;
+    w->priv.webview.UIDelegate = w->priv.delegate;
+    [[w->priv.window contentView] addSubview:w->priv.webview];
+    [w->priv.window orderFrontRegardless];
+
+    // Disable scrolling - make this configurable
+    // [[[w->priv.webview mainFrame] frameView] setAllowsScrolling:NO];
+
+    // ----> Enables WebGL but won't pass the app store guidelines
+    //
+    // WebPreferences *p = [w->priv.webview preferences];
+    // if ([p respondsToSelector:@selector(setWebGLEnabled:)]) {
+    //     [p setWebGLEnabled:YES];
+    // }
+
+    [NSApp setActivationPolicy:NSApplicationActivationPolicyRegular];
+    [NSApp finishLaunching];
+    [NSApp activateIgnoringOtherApps:YES];
+
+    NSMenu *menubar = [[[NSMenu alloc] initWithTitle:@""] autorelease];
+
+    NSMenuItem *appMenuItem =
+        [[[NSMenuItem alloc] initWithTitle:@"wails app" action:NULL keyEquivalent:@""]
+            autorelease];
+    NSMenu *appMenu = [[[NSMenu alloc] initWithTitle:@"wails app"] autorelease];
+    [appMenuItem setSubmenu:appMenu];
+    [menubar addItem:appMenuItem];
+
+    NSMenuItem *item = [[[NSMenuItem alloc] initWithTitle:@"Hide"
+                                                   action:@selector(hide:)
+                                            keyEquivalent:@"h"] autorelease];
+    [appMenu addItem:item];
+    item = [[[NSMenuItem alloc] initWithTitle:@"Hide Others"
+                                       action:@selector(hideOtherApplications:)
+                                keyEquivalent:@"h"] autorelease];
+    [item setKeyEquivalentModifierMask:(NSEventModifierFlagOption |
+                                        NSEventModifierFlagCommand)];
+    [appMenu addItem:item];
+    item = [[[NSMenuItem alloc] initWithTitle:@"Show All"
+                                       action:@selector(unhideAllApplications:)
+                                keyEquivalent:@""] autorelease];
+    [appMenu addItem:item];
+    [appMenu addItem:[NSMenuItem separatorItem]];
+
+    NSMenuItem *editMenuItem =
+        [[[NSMenuItem alloc] initWithTitle:@"Edit" action:NULL keyEquivalent:@""]
+            autorelease];
+    NSMenu *editMenu = [[[NSMenu alloc] initWithTitle:@"Edit"] autorelease];
+    [editMenuItem setSubmenu:editMenu];
+    [menubar addItem:editMenuItem];
+
+    item = [[[NSMenuItem alloc] initWithTitle:@"Cut"
+                                       action:@selector(cut:)
+                                keyEquivalent:@"x"] autorelease];
+    [editMenu addItem:item];
+
+    item = [[[NSMenuItem alloc] initWithTitle:@"Copy"
+                                       action:@selector(copy:)
+                                keyEquivalent:@"c"] autorelease];
+    [editMenu addItem:item];
+
+    item = [[[NSMenuItem alloc] initWithTitle:@"Paste"
+                                       action:@selector(paste:)
+                                keyEquivalent:@"v"] autorelease];
+    [editMenu addItem:item];
+
+    item = [[[NSMenuItem alloc] initWithTitle:@"Select All"
+                                       action:@selector(selectAll:)
+                                keyEquivalent:@"a"] autorelease];
+    [editMenu addItem:item];
+
+    [appMenu addItem:[NSMenuItem separatorItem]];
+
+    item = [[[NSMenuItem alloc] initWithTitle:@"Quit"
+                                       action:@selector(terminate:)
+                                keyEquivalent:@"q"] autorelease];
+    [appMenu addItem:item];
+
+    [NSApp setMainMenu:menubar];
+
+    w->priv.should_exit = 0;
+    return 0;
+  }
+
+  WEBVIEW_API int webview_loop(struct webview *w, int blocking)
+  {
+    NSDate *until = (blocking ? [NSDate distantFuture] : [NSDate distantPast]);
+    NSEvent *event = [NSApp nextEventMatchingMask:NSEventMaskAny
+                                        untilDate:until
+                                           inMode:NSDefaultRunLoopMode
+                                          dequeue:YES];
+    if (event)
+    {
+      [NSApp sendEvent:event];
+    }
+    return w->priv.should_exit;
+  }
+
+  WEBVIEW_API int webview_eval(struct webview *w, const char *js)
+  {
+    NSString *nsJS = [NSString stringWithUTF8String:js];
+    [[w->priv.webview windowScriptObject] evaluateWebScript:nsJS];
+    return 0;
+  }
+
+  WEBVIEW_API void webview_set_title(struct webview *w, const char *title)
+  {
+    NSString *nsTitle = [NSString stringWithUTF8String:title];
+    [w->priv.window setTitle:nsTitle];
+  }
+
+  WEBVIEW_API void webview_focus(struct webview *w)
+  {
+    [w->priv.window makeKeyWindow];
+  }
+  
+  WEBVIEW_API void webview_minsize(struct webview *w, int width, int height) {
+    NSSize size;
+    size.width = width;
+    size.height = height;
+    [w->priv.window setMinSize:size];
+  }
+  
+  WEBVIEW_API void webview_maxsize(struct webview *w, int width, int height) {
+    NSSize size;
+    size.width = width;
+    size.height = height;
+    [w->priv.window setMaxSize:size];
+    
+    [w->priv.window setCollectionBehavior:NSWindowCollectionBehaviorFullScreenAuxiliary|NSWindowCollectionBehaviorFullScreenNone|NSWindowCollectionBehaviorFullScreenDisallowsTiling];
+       
+    NSButton *button = [w->priv.window standardWindowButton:NSWindowZoomButton];
+    [button setEnabled: NO];
+  }
+  
+  WEBVIEW_API void webview_set_fullscreen(struct webview *w, int fullscreen)
+  {
+    int b = ((([w->priv.window styleMask] & NSWindowStyleMaskFullScreen) ==
+              NSWindowStyleMaskFullScreen)
+                 ? 1
+                 : 0);
+    if (b != fullscreen)
+    {
+      [w->priv.window toggleFullScreen:nil];
+    }
+  }
+
+  WEBVIEW_API void webview_set_color(struct webview *w, uint8_t r, uint8_t g,
+                                     uint8_t b, uint8_t a)
+  {
+    [w->priv.window setBackgroundColor:[NSColor colorWithRed:(CGFloat)r / 255.0
+                                                       green:(CGFloat)g / 255.0
+                                                        blue:(CGFloat)b / 255.0
+                                                       alpha:(CGFloat)a / 255.0]];
+    if (0.5 >= ((r / 255.0 * 299.0) + (g / 255.0 * 587.0) + (b / 255.0 * 114.0)) /
+                   1000.0)
+    {
+      [w->priv.window
+          setAppearance:[NSAppearance
+                            appearanceNamed:NSAppearanceNameVibrantDark]];
+    }
+    else
+    {
+      [w->priv.window
+          setAppearance:[NSAppearance
+                            appearanceNamed:NSAppearanceNameVibrantLight]];
+    }
+    [w->priv.window setOpaque:NO];
+    [w->priv.window setTitlebarAppearsTransparent:YES];
+    [w->priv.webview setDrawsBackground:NO];
+  }
+
+  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 *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];
+        if (flags & WEBVIEW_DIALOG_FLAG_DIRECTORY)
+        {
+          [openPanel setCanChooseFiles:NO];
+          [openPanel setCanChooseDirectories:YES];
+        }
+        else
+        {
+          [openPanel setCanChooseFiles:YES];
+          [openPanel setCanChooseDirectories:NO];
+          if(filter[0] != NULL)
+          {
+            [openPanel setAllowedFileTypes:fileTypes];
+          }
+        }
+        [openPanel setResolvesAliases:NO];
+        [openPanel setAllowsMultipleSelection:NO];
+        panel = openPanel;
+      }
+      else
+      {
+        panel = [NSSavePanel savePanel];
+      }
+      [panel setCanCreateDirectories:YES];
+      [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) {
+                      [NSApp stopModalWithCode:result];
+                    }];
+      if ([NSApp runModalForWindow:panel] == NSModalResponseOK)
+      {
+        const char *filename = [[[panel URL] path] UTF8String];
+        strlcpy(result, filename, resultsz);
+      }
+    }
+    else if (dlgtype == WEBVIEW_DIALOG_TYPE_ALERT)
+    {
+      NSAlert *a = [NSAlert new];
+      switch (flags & WEBVIEW_DIALOG_FLAG_ALERT_MASK)
+      {
+      case WEBVIEW_DIALOG_FLAG_INFO:
+        [a setAlertStyle:NSAlertStyleInformational];
+        break;
+      case WEBVIEW_DIALOG_FLAG_WARNING:
+        NSLog(@"warning");
+        [a setAlertStyle:NSAlertStyleWarning];
+        break;
+      case WEBVIEW_DIALOG_FLAG_ERROR:
+        NSLog(@"error");
+        [a setAlertStyle:NSAlertStyleCritical];
+        break;
+      }
+      [a setShowsHelp:NO];
+      [a setShowsSuppressionButton:NO];
+      [a setMessageText:[NSString stringWithUTF8String:title]];
+      [a setInformativeText:[NSString stringWithUTF8String:arg]];
+      [a addButtonWithTitle:@"OK"];
+      [a runModal];
+      [a release];
+    }
+  }
+
+  static void webview_dispatch_cb(void *arg)
+  {
+    struct webview_dispatch_arg *context = (struct webview_dispatch_arg *)arg;
+    (context->fn)(context->w, context->arg);
+    free(context);
+  }
+
+  WEBVIEW_API void webview_dispatch(struct webview *w, webview_dispatch_fn fn,
+                                    void *arg)
+  {
+    struct webview_dispatch_arg *context = (struct webview_dispatch_arg *)malloc(
+        sizeof(struct webview_dispatch_arg));
+    context->w = w;
+    context->arg = arg;
+    context->fn = fn;
+    dispatch_async_f(dispatch_get_main_queue(), context, webview_dispatch_cb);
+  }
+
+  WEBVIEW_API void webview_terminate(struct webview *w)
+  {
+    w->priv.should_exit = 1;
+  }
+  WEBVIEW_API void webview_exit(struct webview *w) { [NSApp terminate:NSApp]; }
+  WEBVIEW_API void webview_print_log(const char *s) { NSLog(@"%s", s); }
+
+#endif /* WEBVIEW_COCOA */
+
+#endif /* WEBVIEW_IMPLEMENTATION */
+
 #ifdef __cplusplus
 }
 #endif
 
-#endif /* WEBVIEW_H */
+#endif /* WEBVIEW_H */

lib/renderer/webview/webview_darwin.go

@@ -1,57 +0,0 @@
-package webview
-
-/*
-#include "webview_darwin.h"
-*/
-import "C"
-
-import "unsafe"
-
-const (
-	// DialogFlagFile is a normal file picker dialog
-	DialogFlagFile = C.WEBVIEW_DIALOG_FLAG_FILE
-	// DialogFlagDirectory is an open directory dialog
-	DialogFlagDirectory = C.WEBVIEW_DIALOG_FLAG_DIRECTORY
-	// DialogFlagInfo is an info alert dialog
-	DialogFlagInfo = C.WEBVIEW_DIALOG_FLAG_INFO
-	// DialogFlagWarning is a warning alert dialog
-	DialogFlagWarning = C.WEBVIEW_DIALOG_FLAG_WARNING
-	// DialogFlagError is an error dialog
-	DialogFlagError = C.WEBVIEW_DIALOG_FLAG_ERROR
-)
-
-type MacWebView struct {
-	app unsafe.Pointer
-}
-
-func NewWebview(settings Settings) WebView {
-	return &MacWebView{}
-}
-
-func (w *MacWebView) Dialog(dlgType DialogType, flags int, title string, arg string, filter string) string {
-	// TBD
-	return ""
-}
-
-func (w *MacWebView) Dispatch(func()) {
-	// TBD
-}
-
-func (w *MacWebView) Eval(js string) error {
-	// TBD
-	return nil
-}
-
-func (w *MacWebView) Exit() {
-	// TBD
-}
-
-func (w *MacWebView) Run() {}
-func (w *MacWebView) Loop(blocking bool) bool {
-	return true
-}
-func (w *MacWebView) SetTitle(title string)         {}
-func (w *MacWebView) SetFullscreen(fullscreen bool) {}
-func (w *MacWebView) SetColor(r, g, b, a uint8)     {}
-func (w *MacWebView) InjectCSS(css string)          {}
-func (w *MacWebView) Terminate()                    {}

lib/renderer/webview/webview_darwin.h

@@ -1,13 +0,0 @@
-
-#ifndef WEBVIEW_DARWIN
-#define WEBVIEW_DARWIN
-
-#define WEBVIEW_DIALOG_FLAG_FILE (0 << 0)
-#define WEBVIEW_DIALOG_FLAG_DIRECTORY (1 << 0)
-
-#define WEBVIEW_DIALOG_FLAG_INFO (1 << 1)
-#define WEBVIEW_DIALOG_FLAG_WARNING (2 << 1)
-#define WEBVIEW_DIALOG_FLAG_ERROR (3 << 1)
-#define WEBVIEW_DIALOG_FLAG_ALERT_MASK (3 << 1)
-
-#endif

lib/renderer/webview/webview_linux.go

@@ -1,386 +0,0 @@
-// Package webview implements Go bindings to https://github.com/zserge/webview C library.
-// It is a modified version of webview.go from that repository
-// Bindings closely repeat the C APIs and include both, a simplified
-// single-function API to just open a full-screen webview window, and a more
-// advanced and featureful set of APIs, including Go-to-JavaScript bindings.
-//
-// The library uses gtk-webkit, Cocoa/Webkit and MSHTML (IE8..11) as a browser
-// engine and supports Linux, MacOS and Windows 7..10 respectively.
-//
-package webview
-
-/*
-#cgo linux openbsd freebsd CFLAGS: -DWEBVIEW_GTK=1 -Wno-deprecated-declarations
-#cgo linux openbsd freebsd pkg-config: gtk+-3.0 webkit2gtk-4.0
-
-#cgo windows CFLAGS: -DWEBVIEW_WINAPI=1 -std=c99
-#cgo windows LDFLAGS: -lole32 -lcomctl32 -loleaut32 -luuid -lgdi32
-
-#cgo darwin CFLAGS: -DWEBVIEW_COCOA=1 -x objective-c
-#cgo darwin LDFLAGS: -framework Cocoa -framework WebKit
-
-#include <stdlib.h>
-#include <stdint.h>
-#define WEBVIEW_STATIC
-#define WEBVIEW_IMPLEMENTATION
-
-#ifdef WEBVIEW_GTK
-#include "webview_linux.h"
-#endif
-
-#ifdef WEBVIEW_COCOA
-#include "webview_darwin.h"
-#endif
-
-#ifdef WEBVIEW_COCOA
-#include "webview_darwin.h"
-#endif
-
-
-
-extern void _webviewExternalInvokeCallback(void *, void *);
-
-static inline void CgoWebViewFree(void *w) {
-	free((void *)((struct webview *)w)->title);
-	free((void *)((struct webview *)w)->url);
-	free(w);
-}
-
-static inline void *CgoWebViewCreate(int width, int height, char *title, char *url, int resizable, int debug) {
-	struct webview *w = (struct webview *) calloc(1, sizeof(*w));
-	w->width = width;
-	w->height = height;
-	w->title = title;
-	w->url = url;
-	w->resizable = resizable;
-	w->debug = debug;
-	w->external_invoke_cb = (webview_external_invoke_cb_t) _webviewExternalInvokeCallback;
-	if (webview_init(w) != 0) {
-		CgoWebViewFree(w);
-		return NULL;
-	}
-	return (void *)w;
-}
-
-static inline int CgoWebViewLoop(void *w, int blocking) {
-	return webview_loop((struct webview *)w, blocking);
-}
-
-static inline void CgoWebViewTerminate(void *w) {
-	webview_terminate((struct webview *)w);
-}
-
-static inline void CgoWebViewExit(void *w) {
-	webview_exit((struct webview *)w);
-}
-
-static inline void CgoWebViewSetTitle(void *w, char *title) {
-	webview_set_title((struct webview *)w, title);
-}
-
-static inline void CgoWebViewSetFullscreen(void *w, int fullscreen) {
-	webview_set_fullscreen((struct webview *)w, fullscreen);
-}
-
-static inline void CgoWebViewSetColor(void *w, uint8_t r, uint8_t g, uint8_t b, uint8_t a) {
-	webview_set_color((struct webview *)w, r, g, b, a);
-}
-
-static inline void CgoDialog(void *w, int dlgtype, int flags,
-char *title, char *arg, char *res, size_t ressz, char *filter) {
-	webview_dialog(w, dlgtype, flags,
-	(const char*)title, (const char*) arg, res, ressz, filter);
-}
-
-static inline int CgoWebViewEval(void *w, char *js) {
-	return webview_eval((struct webview *)w, js);
-}
-
-static inline void CgoWebViewInjectCSS(void *w, char *css) {
-	webview_inject_css((struct webview *)w, css);
-}
-
-extern void _webviewDispatchGoCallback(void *);
-static inline void _webview_dispatch_cb(struct webview *w, void *arg) {
-	_webviewDispatchGoCallback(arg);
-}
-static inline void CgoWebViewDispatch(void *w, uintptr_t arg) {
-	webview_dispatch((struct webview *)w, _webview_dispatch_cb, (void *)arg);
-}
-*/
-import "C"
-import (
-	"errors"
-	"runtime"
-	"sync"
-	"unsafe"
-)
-
-func init() {
-	// Ensure that main.main is called from the main thread
-	runtime.LockOSThread()
-}
-
-// Open is a simplified API to open a single native window with a full-size webview in
-// it. It can be helpful if you want to communicate with the core app using XHR
-// or WebSockets (as opposed to using JavaScript bindings).
-//
-// Window appearance can be customized using title, width, height and resizable parameters.
-// URL must be provided and can user either a http or https protocol, or be a
-// local file:// URL. On some platforms "data:" URLs are also supported
-// (Linux/MacOS).
-func Open(title, url string, w, h int, resizable bool) error {
-	titleStr := C.CString(title)
-	defer C.free(unsafe.Pointer(titleStr))
-	urlStr := C.CString(url)
-	defer C.free(unsafe.Pointer(urlStr))
-	resize := C.int(0)
-	if resizable {
-		resize = C.int(1)
-	}
-
-	r := C.webview(titleStr, urlStr, C.int(w), C.int(h), resize)
-	if r != 0 {
-		return errors.New("failed to create webview")
-	}
-	return nil
-}
-
-// ExternalInvokeCallbackFunc is a function type that is called every time
-// "window.external.invoke()" is called from JavaScript. Data is the only
-// obligatory string parameter passed into the "invoke(data)" function from
-// JavaScript. To pass more complex data serialized JSON or base64 encoded
-// string can be used.
-type ExternalInvokeCallbackFunc func(w WebView, data string)
-
-// Settings is a set of parameters to customize the initial WebView appearance
-// and behavior. It is passed into the webview.New() constructor.
-type Settings struct {
-	// WebView main window title
-	Title string
-	// URL to open in a webview
-	URL string
-	// Window width in pixels
-	Width int
-	// Window height in pixels
-	Height int
-	// Allows/disallows window resizing
-	Resizable bool
-	// Enable debugging tools (Linux/BSD/MacOS, on Windows use Firebug)
-	Debug bool
-	// A callback that is executed when JavaScript calls "window.external.invoke()"
-	ExternalInvokeCallback ExternalInvokeCallbackFunc
-}
-
-// WebView is an interface that wraps the basic methods for controlling the UI
-// loop, handling multithreading and providing JavaScript bindings.
-type WebView interface {
-	// Run() starts the main UI loop until the user closes the webview window or
-	// Terminate() is called.
-	Run()
-	// Loop() runs a single iteration of the main UI.
-	Loop(blocking bool) bool
-	// SetTitle() changes window title. This method must be called from the main
-	// thread only. See Dispatch() for more details.
-	SetTitle(title string)
-	// SetFullscreen() controls window full-screen mode. This method must be
-	// called from the main thread only. See Dispatch() for more details.
-	SetFullscreen(fullscreen bool)
-	// SetColor() changes window background color. This method must be called from
-	// the main thread only. See Dispatch() for more details.
-	SetColor(r, g, b, a uint8)
-	// Eval() evaluates an arbitrary JS code inside the webview. This method must
-	// be called from the main thread only. See Dispatch() for more details.
-	Eval(js string) error
-	// InjectJS() injects an arbitrary block of CSS code using the JS API. This
-	// method must be called from the main thread only. See Dispatch() for more
-	// details.
-	InjectCSS(css string)
-	// 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, 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()
-	// Dispatch() schedules some arbitrary function to be executed on the main UI
-	// thread. This may be helpful if you want to run some JavaScript from
-	// background threads/goroutines, or to terminate the app.
-	Dispatch(func())
-	// Exit() closes the window and cleans up the resources. Use Terminate() to
-	// forcefully break out of the main UI loop.
-	Exit()
-}
-
-// DialogType is an enumeration of all supported system dialog types
-type DialogType int
-
-const (
-	// DialogTypeOpen is a system file open dialog
-	DialogTypeOpen DialogType = iota
-	// DialogTypeSave is a system file save dialog
-	DialogTypeSave
-	// DialogTypeAlert is a system alert dialog (message box)
-	DialogTypeAlert
-)
-
-const (
-	// DialogFlagFile is a normal file picker dialog
-	DialogFlagFile = C.WEBVIEW_DIALOG_FLAG_FILE
-	// DialogFlagDirectory is an open directory dialog
-	DialogFlagDirectory = C.WEBVIEW_DIALOG_FLAG_DIRECTORY
-	// DialogFlagInfo is an info alert dialog
-	DialogFlagInfo = C.WEBVIEW_DIALOG_FLAG_INFO
-	// DialogFlagWarning is a warning alert dialog
-	DialogFlagWarning = C.WEBVIEW_DIALOG_FLAG_WARNING
-	// DialogFlagError is an error dialog
-	DialogFlagError = C.WEBVIEW_DIALOG_FLAG_ERROR
-)
-
-var (
-	m     sync.Mutex
-	index uintptr
-	fns   = map[uintptr]func(){}
-	cbs   = map[WebView]ExternalInvokeCallbackFunc{}
-)
-
-type webview struct {
-	w unsafe.Pointer
-}
-
-var _ WebView = &webview{}
-
-func boolToInt(b bool) int {
-	if b {
-		return 1
-	}
-	return 0
-}
-
-// NewWebview creates and opens a new webview window using the given settings. The
-// returned object implements the WebView interface. This function returns nil
-// if a window can not be created.
-func NewWebview(settings Settings) WebView {
-	if settings.Width == 0 {
-		settings.Width = 640
-	}
-	if settings.Height == 0 {
-		settings.Height = 480
-	}
-	if settings.Title == "" {
-		settings.Title = "WebView"
-	}
-	w := &webview{}
-	w.w = C.CgoWebViewCreate(C.int(settings.Width), C.int(settings.Height),
-		C.CString(settings.Title), C.CString(settings.URL),
-		C.int(boolToInt(settings.Resizable)), C.int(boolToInt(settings.Debug)))
-	m.Lock()
-	if settings.ExternalInvokeCallback != nil {
-		cbs[w] = settings.ExternalInvokeCallback
-	} else {
-		cbs[w] = func(w WebView, data string) {}
-	}
-	m.Unlock()
-	return w
-}
-
-func (w *webview) Loop(blocking bool) bool {
-	block := C.int(0)
-	if blocking {
-		block = 1
-	}
-	return C.CgoWebViewLoop(w.w, block) == 0
-}
-
-func (w *webview) Run() {
-	for w.Loop(true) {
-	}
-}
-
-func (w *webview) Exit() {
-	C.CgoWebViewExit(w.w)
-}
-
-func (w *webview) Dispatch(f func()) {
-	m.Lock()
-	for ; fns[index] != nil; index++ {
-	}
-	fns[index] = f
-	m.Unlock()
-	C.CgoWebViewDispatch(w.w, C.uintptr_t(index))
-}
-
-func (w *webview) SetTitle(title string) {
-	p := C.CString(title)
-	defer C.free(unsafe.Pointer(p))
-	C.CgoWebViewSetTitle(w.w, p)
-}
-
-func (w *webview) SetColor(r, g, b, a uint8) {
-	C.CgoWebViewSetColor(w.w, C.uint8_t(r), C.uint8_t(g), C.uint8_t(b), C.uint8_t(a))
-}
-
-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, filter string) string {
-	const maxPath = 4096
-	titlePtr := C.CString(title)
-	defer C.free(unsafe.Pointer(titlePtr))
-	argPtr := C.CString(arg)
-	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), filterPtr)
-	return C.GoString(resultPtr)
-}
-
-func (w *webview) Eval(js string) error {
-	p := C.CString(js)
-	defer C.free(unsafe.Pointer(p))
-	switch C.CgoWebViewEval(w.w, p) {
-	case -1:
-		return errors.New("evaluation failed")
-	}
-	return nil
-}
-
-func (w *webview) InjectCSS(css string) {
-	p := C.CString(css)
-	defer C.free(unsafe.Pointer(p))
-	C.CgoWebViewInjectCSS(w.w, p)
-}
-
-func (w *webview) Terminate() {
-	C.CgoWebViewTerminate(w.w)
-}
-
-//export _webviewDispatchGoCallback
-func _webviewDispatchGoCallback(index unsafe.Pointer) {
-	var f func()
-	m.Lock()
-	f = fns[uintptr(index)]
-	delete(fns, uintptr(index))
-	m.Unlock()
-	f()
-}
-
-//export _webviewExternalInvokeCallback
-func _webviewExternalInvokeCallback(w unsafe.Pointer, data unsafe.Pointer) {
-	m.Lock()
-	var (
-		cb ExternalInvokeCallbackFunc
-		wv WebView
-	)
-	for wv, cb = range cbs {
-		if wv.(*webview).w == w {
-			break
-		}
-	}
-	m.Unlock()
-	cb(wv, C.GoString((*C.char)(data)))
-}

lib/renderer/webview/webview_linux.h

@@ -1,522 +0,0 @@
-/*
- * MIT License
- *
- * Copyright (c) 2017 Serge Zaitsev
- *
- * 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.
- */
-#ifndef WEBVIEW_H
-#define WEBVIEW_H
-
-#ifdef __cplusplus
-extern "C"
-{
-#endif
-
-#ifdef WEBVIEW_STATIC
-#define WEBVIEW_API static
-#else
-#define WEBVIEW_API extern
-#endif
-
-#include <stdint.h>
-#include <stdlib.h>
-#include <string.h>
-
-#include <JavaScriptCore/JavaScript.h>
-#include <gtk/gtk.h>
-#include <webkit2/webkit2.h>
-
-struct webview_priv
-{
-  GtkWidget *window;
-  GtkWidget *scroller;
-  GtkWidget *webview;
-  GtkWidget *inspector_window;
-  GAsyncQueue *queue;
-  int ready;
-  int js_busy;
-  int should_exit;
-};
-
-struct webview;
-
-typedef void (*webview_external_invoke_cb_t)(struct webview *w,
-                                              const char *arg);
-
-struct webview
-{
-  const char *url;
-  const char *title;
-  int width;
-  int height;
-  int resizable;
-  int transparentTitlebar;
-  int debug;
-  webview_external_invoke_cb_t external_invoke_cb;
-  struct webview_priv priv;
-  void *userdata;
-};
-
-enum webview_dialog_type
-{
-  WEBVIEW_DIALOG_TYPE_OPEN = 0,
-  WEBVIEW_DIALOG_TYPE_SAVE = 1,
-  WEBVIEW_DIALOG_TYPE_ALERT = 2
-};
-
-#define WEBVIEW_DIALOG_FLAG_FILE (0 << 0)
-#define WEBVIEW_DIALOG_FLAG_DIRECTORY (1 << 0)
-
-#define WEBVIEW_DIALOG_FLAG_INFO (1 << 1)
-#define WEBVIEW_DIALOG_FLAG_WARNING (2 << 1)
-#define WEBVIEW_DIALOG_FLAG_ERROR (3 << 1)
-#define WEBVIEW_DIALOG_FLAG_ALERT_MASK (3 << 1)
-
-typedef void (*webview_dispatch_fn)(struct webview *w, void *arg);
-
-struct webview_dispatch_arg
-{
-  webview_dispatch_fn fn;
-  struct webview *w;
-  void *arg;
-};
-
-#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%"         \
-"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"
-
-#define CSS_INJECT_FUNCTION                                           \
-"(function(e){var "                                                 \
-"t=document.createElement('style'),d=document.head||document."      \
-"getElementsByTagName('head')[0];t.setAttribute('type','text/"      \
-"css'),t.styleSheet?t.styleSheet.cssText=e:t.appendChild(document." \
-"createTextNode(e)),d.appendChild(t)})"
-
-static const char *webview_check_url(const char *url)
-{
-  if (url == NULL || strlen(url) == 0)
-  {
-    return DEFAULT_URL;
-  }
-  return url;
-}
-
-WEBVIEW_API int webview(const char *title, const char *url, int width,
-                        int height, int resizable);
-
-WEBVIEW_API int webview_init(struct webview *w);
-WEBVIEW_API int webview_loop(struct webview *w, int blocking);
-WEBVIEW_API int webview_eval(struct webview *w, const char *js);
-WEBVIEW_API int webview_inject_css(struct webview *w, const char *css);
-WEBVIEW_API void webview_set_title(struct webview *w, const char *title);
-WEBVIEW_API void webview_set_fullscreen(struct webview *w, int fullscreen);
-WEBVIEW_API void webview_set_color(struct webview *w, uint8_t r, uint8_t g,
-                                    uint8_t b, uint8_t a);
-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 *filter);
-WEBVIEW_API void webview_dispatch(struct webview *w, webview_dispatch_fn fn,
-                                  void *arg);
-WEBVIEW_API void webview_terminate(struct webview *w);
-WEBVIEW_API void webview_exit(struct webview *w);
-WEBVIEW_API void webview_debug(const char *format, ...);
-WEBVIEW_API void webview_print_log(const char *s);
-
-WEBVIEW_API int webview(const char *title, const char *url, int width,
-                        int height, int resizable)
-{
-  struct webview webview;
-  memset(&webview, 0, sizeof(webview));
-  webview.title = title;
-  webview.url = url;
-  webview.width = width;
-  webview.height = height;
-  webview.resizable = resizable;
-  int r = webview_init(&webview);
-  if (r != 0)
-  {
-    return r;
-  }
-  while (webview_loop(&webview, 1) == 0)
-  {
-  }
-  webview_exit(&webview);
-  return 0;
-}
-
-WEBVIEW_API void webview_debug(const char *format, ...)
-{
-  char buf[4096];
-  va_list ap;
-  va_start(ap, format);
-  vsnprintf(buf, sizeof(buf), format, ap);
-  webview_print_log(buf);
-  va_end(ap);
-}
-
-static int webview_js_encode(const char *s, char *esc, size_t n)
-{
-  int r = 1; /* At least one byte for trailing zero */
-  for (; *s; s++)
-  {
-    const unsigned char c = *s;
-    if (c >= 0x20 && c < 0x80 && strchr("<>\\'\"", c) == NULL)
-    {
-      if (n > 0)
-      {
-        *esc++ = c;
-        n--;
-      }
-      r++;
-    }
-    else
-    {
-      if (n > 0)
-      {
-        snprintf(esc, n, "\\x%02x", (int)c);
-        esc += 4;
-        n -= 4;
-      }
-      r += 4;
-    }
-  }
-  return r;
-}
-
-WEBVIEW_API int webview_inject_css(struct webview *w, const char *css)
-{
-  int n = webview_js_encode(css, NULL, 0);
-  char *esc = (char *)calloc(1, sizeof(CSS_INJECT_FUNCTION) + n + 4);
-  if (esc == NULL)
-  {
-    return -1;
-  }
-  char *js = (char *)calloc(1, n);
-  webview_js_encode(css, js, n);
-  snprintf(esc, sizeof(CSS_INJECT_FUNCTION) + n + 4, "%s(\"%s\")",
-            CSS_INJECT_FUNCTION, js);
-  int r = webview_eval(w, esc);
-  free(js);
-  free(esc);
-  return r;
-}
-
-static void external_message_received_cb(WebKitUserContentManager *m,
-                                          WebKitJavascriptResult *r,
-                                          gpointer arg)
-{
-  (void)m;
-  struct webview *w = (struct webview *)arg;
-  if (w->external_invoke_cb == NULL)
-  {
-    return;
-  }
-  JSGlobalContextRef context = webkit_javascript_result_get_global_context(r);
-  JSValueRef value = webkit_javascript_result_get_value(r);
-  JSStringRef js = JSValueToStringCopy(context, value, NULL);
-  size_t n = JSStringGetMaximumUTF8CStringSize(js);
-  char *s = g_new(char, n);
-  JSStringGetUTF8CString(js, s, n);
-  w->external_invoke_cb(w, s);
-  JSStringRelease(js);
-  g_free(s);
-}
-
-static void webview_load_changed_cb(WebKitWebView *webview,
-                                    WebKitLoadEvent event, gpointer arg)
-{
-  (void)webview;
-  struct webview *w = (struct webview *)arg;
-  if (event == WEBKIT_LOAD_FINISHED)
-  {
-    w->priv.ready = 1;
-  }
-}
-
-static void webview_destroy_cb(GtkWidget *widget, gpointer arg)
-{
-  (void)widget;
-  struct webview *w = (struct webview *)arg;
-  webview_terminate(w);
-}
-
-static gboolean webview_context_menu_cb(WebKitWebView *webview,
-                                        GtkWidget *default_menu,
-                                        WebKitHitTestResult *hit_test_result,
-                                        gboolean triggered_with_keyboard,
-                                        gpointer userdata)
-{
-  (void)webview;
-  (void)default_menu;
-  (void)hit_test_result;
-  (void)triggered_with_keyboard;
-  (void)userdata;
-  return TRUE;
-}
-
-WEBVIEW_API int webview_init(struct webview *w)
-{
-  if (gtk_init_check(0, NULL) == FALSE)
-  {
-    return -1;
-  }
-
-  w->priv.ready = 0;
-  w->priv.should_exit = 0;
-  w->priv.queue = g_async_queue_new();
-  w->priv.window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
-  gtk_window_set_title(GTK_WINDOW(w->priv.window), w->title);
-
-  if (w->resizable)
-  {
-    gtk_window_set_default_size(GTK_WINDOW(w->priv.window), w->width,
-                                w->height);
-  }
-  else
-  {
-    gtk_widget_set_size_request(w->priv.window, w->width, w->height);
-  }
-  gtk_window_set_resizable(GTK_WINDOW(w->priv.window), !!w->resizable);
-  gtk_window_set_position(GTK_WINDOW(w->priv.window), GTK_WIN_POS_CENTER);
-
-  w->priv.scroller = gtk_scrolled_window_new(NULL, NULL);
-  gtk_container_add(GTK_CONTAINER(w->priv.window), w->priv.scroller);
-
-  WebKitUserContentManager *m = webkit_user_content_manager_new();
-  webkit_user_content_manager_register_script_message_handler(m, "external");
-  g_signal_connect(m, "script-message-received::external",
-                    G_CALLBACK(external_message_received_cb), w);
-
-  w->priv.webview = webkit_web_view_new_with_user_content_manager(m);
-  webkit_web_view_load_uri(WEBKIT_WEB_VIEW(w->priv.webview),
-                            webview_check_url(w->url));
-  g_signal_connect(G_OBJECT(w->priv.webview), "load-changed",
-                    G_CALLBACK(webview_load_changed_cb), w);
-  gtk_container_add(GTK_CONTAINER(w->priv.scroller), w->priv.webview);
-
-  if (w->debug)
-  {
-    WebKitSettings *settings =
-        webkit_web_view_get_settings(WEBKIT_WEB_VIEW(w->priv.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(w->priv.webview), "context-menu",
-                      G_CALLBACK(webview_context_menu_cb), w);
-  }
-
-  gtk_widget_show_all(w->priv.window);
-
-  webkit_web_view_run_javascript(
-      WEBKIT_WEB_VIEW(w->priv.webview),
-      "window.external={invoke:function(x){"
-      "window.webkit.messageHandlers.external.postMessage(x);}}",
-      NULL, NULL, NULL);
-
-  g_signal_connect(G_OBJECT(w->priv.window), "destroy",
-                    G_CALLBACK(webview_destroy_cb), w);
-  return 0;
-}
-
-WEBVIEW_API int webview_loop(struct webview *w, int blocking)
-{
-  gtk_main_iteration_do(blocking);
-  return w->priv.should_exit;
-}
-
-WEBVIEW_API void webview_set_title(struct webview *w, const char *title)
-{
-  gtk_window_set_title(GTK_WINDOW(w->priv.window), title);
-}
-
-WEBVIEW_API void webview_set_fullscreen(struct webview *w, int fullscreen)
-{
-  if (fullscreen)
-  {
-    gtk_window_fullscreen(GTK_WINDOW(w->priv.window));
-  }
-  else
-  {
-    gtk_window_unfullscreen(GTK_WINDOW(w->priv.window));
-  }
-}
-
-WEBVIEW_API void webview_set_color(struct webview *w, uint8_t r, uint8_t g,
-                                    uint8_t b, uint8_t a)
-{
-  GdkRGBA color = {r / 255.0, g / 255.0, b / 255.0, a / 255.0};
-  webkit_web_view_set_background_color(WEBKIT_WEB_VIEW(w->priv.webview),
-                                        &color);
-}
-
-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 *filter)
-{
-  GtkWidget *dlg;
-  if (result != NULL)
-  {
-    result[0] = '\0';
-  }
-  if (dlgtype == WEBVIEW_DIALOG_TYPE_OPEN ||
-      dlgtype == WEBVIEW_DIALOG_TYPE_SAVE)
-  {
-    dlg = gtk_file_chooser_dialog_new(
-        title, GTK_WINDOW(w->priv.window),
-        (dlgtype == WEBVIEW_DIALOG_TYPE_OPEN
-              ? (flags & WEBVIEW_DIALOG_FLAG_DIRECTORY
-                    ? GTK_FILE_CHOOSER_ACTION_SELECT_FOLDER
-                    : GTK_FILE_CHOOSER_ACTION_OPEN)
-              : GTK_FILE_CHOOSER_ACTION_SAVE),
-        "_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);
-    gtk_file_chooser_set_do_overwrite_confirmation(GTK_FILE_CHOOSER(dlg), TRUE);
-    gtk_file_chooser_set_create_folders(GTK_FILE_CHOOSER(dlg), TRUE);
-    gint response = gtk_dialog_run(GTK_DIALOG(dlg));
-    if (response == GTK_RESPONSE_ACCEPT)
-    {
-      gchar *filename = gtk_file_chooser_get_filename(GTK_FILE_CHOOSER(dlg));
-      g_strlcpy(result, filename, resultsz);
-      g_free(filename);
-    }
-    gtk_widget_destroy(dlg);
-  }
-  else if (dlgtype == WEBVIEW_DIALOG_TYPE_ALERT)
-  {
-    GtkMessageType type = GTK_MESSAGE_OTHER;
-    switch (flags & WEBVIEW_DIALOG_FLAG_ALERT_MASK)
-    {
-    case WEBVIEW_DIALOG_FLAG_INFO:
-      type = GTK_MESSAGE_INFO;
-      break;
-    case WEBVIEW_DIALOG_FLAG_WARNING:
-      type = GTK_MESSAGE_WARNING;
-      break;
-    case WEBVIEW_DIALOG_FLAG_ERROR:
-      type = GTK_MESSAGE_ERROR;
-      break;
-    }
-    dlg = gtk_message_dialog_new(GTK_WINDOW(w->priv.window), GTK_DIALOG_MODAL,
-                                  type, GTK_BUTTONS_OK, "%s", title);
-    gtk_message_dialog_format_secondary_text(GTK_MESSAGE_DIALOG(dlg), "%s",
-                                              arg);
-    gtk_dialog_run(GTK_DIALOG(dlg));
-    gtk_widget_destroy(dlg);
-  }
-}
-
-static void webview_eval_finished(GObject *object, GAsyncResult *result,
-                                  gpointer userdata)
-{
-  (void)object;
-  (void)result;
-  struct webview *w = (struct webview *)userdata;
-  w->priv.js_busy = 0;
-}
-
-WEBVIEW_API int webview_eval(struct webview *w, const char *js)
-{
-  while (w->priv.ready == 0)
-  {
-    g_main_context_iteration(NULL, TRUE);
-  }
-  w->priv.js_busy = 1;
-  webkit_web_view_run_javascript(WEBKIT_WEB_VIEW(w->priv.webview), js, NULL,
-                                  webview_eval_finished, w);
-  while (w->priv.js_busy)
-  {
-    g_main_context_iteration(NULL, TRUE);
-  }
-  return 0;
-}
-
-static gboolean webview_dispatch_wrapper(gpointer userdata)
-{
-  struct webview *w = (struct webview *)userdata;
-  for (;;)
-  {
-    struct webview_dispatch_arg *arg =
-        (struct webview_dispatch_arg *)g_async_queue_try_pop(w->priv.queue);
-    if (arg == NULL)
-    {
-      break;
-    }
-    (arg->fn)(w, arg->arg);
-    g_free(arg);
-  }
-  return FALSE;
-}
-
-WEBVIEW_API void webview_dispatch(struct webview *w, webview_dispatch_fn fn,
-                                  void *arg)
-{
-  struct webview_dispatch_arg *context =
-      (struct webview_dispatch_arg *)g_new(struct webview_dispatch_arg *, 1);
-  context->w = w;
-  context->arg = arg;
-  context->fn = fn;
-  g_async_queue_lock(w->priv.queue);
-  g_async_queue_push_unlocked(w->priv.queue, context);
-  if (g_async_queue_length_unlocked(w->priv.queue) == 1)
-  {
-    gdk_threads_add_idle(webview_dispatch_wrapper, w);
-  }
-  g_async_queue_unlock(w->priv.queue);
-}
-
-WEBVIEW_API void webview_terminate(struct webview *w)
-{
-  w->priv.should_exit = 1;
-}
-
-WEBVIEW_API void webview_exit(struct webview *w) { (void)w; }
-WEBVIEW_API void webview_print_log(const char *s)
-{
-  fprintf(stderr, "%s\n", s);
-}
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif /* WEBVIEW_H */

lib/renderer/webview/webview_windows.go

@@ -1,368 +0,0 @@
-// Package webview implements Go bindings to https://github.com/zserge/webview C library.
-// It is a modified version of webview.go from that repository
-// Bindings closely repeat the C APIs and include both, a simplified
-// single-function API to just open a full-screen webview window, and a more
-// advanced and featureful set of APIs, including Go-to-JavaScript bindings.
-//
-// The library uses gtk-webkit, Cocoa/Webkit and MSHTML (IE8..11) as a browser
-// engine and supports Linux, MacOS and Windows 7..10 respectively.
-//
-package webview
-
-/*
-#cgo windows CFLAGS: -DWEBVIEW_WINAPI=1 -std=c99
-#cgo windows LDFLAGS: -lole32 -lcomctl32 -loleaut32 -luuid -lgdi32
-
-#include <stdlib.h>
-#include <stdint.h>
-#define WEBVIEW_STATIC
-#define WEBVIEW_IMPLEMENTATION
-
-#include "webview_windows.h"
-
-extern void _webviewExternalInvokeCallback(void *, void *);
-
-static inline void CgoWebViewFree(void *w) {
-	free((void *)((struct webview *)w)->title);
-	free((void *)((struct webview *)w)->url);
-	free(w);
-}
-
-static inline void *CgoWebViewCreate(int width, int height, char *title, char *url, int resizable, int debug) {
-	struct webview *w = (struct webview *) calloc(1, sizeof(*w));
-	w->width = width;
-	w->height = height;
-	w->title = title;
-	w->url = url;
-	w->resizable = resizable;
-	w->debug = debug;
-	w->external_invoke_cb = (webview_external_invoke_cb_t) _webviewExternalInvokeCallback;
-	if (webview_init(w) != 0) {
-		CgoWebViewFree(w);
-		return NULL;
-	}
-	return (void *)w;
-}
-
-static inline int CgoWebViewLoop(void *w, int blocking) {
-	return webview_loop((struct webview *)w, blocking);
-}
-
-static inline void CgoWebViewTerminate(void *w) {
-	webview_terminate((struct webview *)w);
-}
-
-static inline void CgoWebViewExit(void *w) {
-	webview_exit((struct webview *)w);
-}
-
-static inline void CgoWebViewSetTitle(void *w, char *title) {
-	webview_set_title((struct webview *)w, title);
-}
-
-static inline void CgoWebViewSetFullscreen(void *w, int fullscreen) {
-	webview_set_fullscreen((struct webview *)w, fullscreen);
-}
-
-static inline void CgoWebViewSetColor(void *w, uint8_t r, uint8_t g, uint8_t b, uint8_t a) {
-	webview_set_color((struct webview *)w, r, g, b, a);
-}
-
-static inline void CgoDialog(void *w, int dlgtype, int flags,
-char *title, char *arg, char *res, size_t ressz, char *filter) {
-	webview_dialog(w, dlgtype, flags,
-	(const char*)title, (const char*) arg, res, ressz, filter);
-}
-
-static inline int CgoWebViewEval(void *w, char *js) {
-	return webview_eval((struct webview *)w, js);
-}
-
-static inline void CgoWebViewInjectCSS(void *w, char *css) {
-	webview_inject_css((struct webview *)w, css);
-}
-
-extern void _webviewDispatchGoCallback(void *);
-static inline void _webview_dispatch_cb(struct webview *w, void *arg) {
-	_webviewDispatchGoCallback(arg);
-}
-static inline void CgoWebViewDispatch(void *w, uintptr_t arg) {
-	webview_dispatch((struct webview *)w, _webview_dispatch_cb, (void *)arg);
-}
-*/
-import "C"
-import (
-	"errors"
-	"runtime"
-	"sync"
-	"unsafe"
-)
-
-func init() {
-	// Ensure that main.main is called from the main thread
-	runtime.LockOSThread()
-}
-
-// Open is a simplified API to open a single native window with a full-size webview in
-// it. It can be helpful if you want to communicate with the core app using XHR
-// or WebSockets (as opposed to using JavaScript bindings).
-//
-// Window appearance can be customized using title, width, height and resizable parameters.
-// URL must be provided and can user either a http or https protocol, or be a
-// local file:// URL. On some platforms "data:" URLs are also supported
-// (Linux/MacOS).
-func Open(title, url string, w, h int, resizable bool) error {
-	titleStr := C.CString(title)
-	defer C.free(unsafe.Pointer(titleStr))
-	urlStr := C.CString(url)
-	defer C.free(unsafe.Pointer(urlStr))
-	resize := C.int(0)
-	if resizable {
-		resize = C.int(1)
-	}
-
-	r := C.webview(titleStr, urlStr, C.int(w), C.int(h), resize)
-	if r != 0 {
-		return errors.New("failed to create webview")
-	}
-	return nil
-}
-
-// ExternalInvokeCallbackFunc is a function type that is called every time
-// "window.external.invoke()" is called from JavaScript. Data is the only
-// obligatory string parameter passed into the "invoke(data)" function from
-// JavaScript. To pass more complex data serialized JSON or base64 encoded
-// string can be used.
-type ExternalInvokeCallbackFunc func(w WebView, data string)
-
-// Settings is a set of parameters to customize the initial WebView appearance
-// and behavior. It is passed into the webview.New() constructor.
-type Settings struct {
-	// WebView main window title
-	Title string
-	// URL to open in a webview
-	URL string
-	// Window width in pixels
-	Width int
-	// Window height in pixels
-	Height int
-	// Allows/disallows window resizing
-	Resizable bool
-	// Enable debugging tools (Linux/BSD/MacOS, on Windows use Firebug)
-	Debug bool
-	// A callback that is executed when JavaScript calls "window.external.invoke()"
-	ExternalInvokeCallback ExternalInvokeCallbackFunc
-}
-
-// WebView is an interface that wraps the basic methods for controlling the UI
-// loop, handling multithreading and providing JavaScript bindings.
-type WebView interface {
-	// Run() starts the main UI loop until the user closes the webview window or
-	// Terminate() is called.
-	Run()
-	// Loop() runs a single iteration of the main UI.
-	Loop(blocking bool) bool
-	// SetTitle() changes window title. This method must be called from the main
-	// thread only. See Dispatch() for more details.
-	SetTitle(title string)
-	// SetFullscreen() controls window full-screen mode. This method must be
-	// called from the main thread only. See Dispatch() for more details.
-	SetFullscreen(fullscreen bool)
-	// SetColor() changes window background color. This method must be called from
-	// the main thread only. See Dispatch() for more details.
-	SetColor(r, g, b, a uint8)
-	// Eval() evaluates an arbitrary JS code inside the webview. This method must
-	// be called from the main thread only. See Dispatch() for more details.
-	Eval(js string) error
-	// InjectJS() injects an arbitrary block of CSS code using the JS API. This
-	// method must be called from the main thread only. See Dispatch() for more
-	// details.
-	InjectCSS(css string)
-	// 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, 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()
-	// Dispatch() schedules some arbitrary function to be executed on the main UI
-	// thread. This may be helpful if you want to run some JavaScript from
-	// background threads/goroutines, or to terminate the app.
-	Dispatch(func())
-	// Exit() closes the window and cleans up the resources. Use Terminate() to
-	// forcefully break out of the main UI loop.
-	Exit()
-}
-
-// DialogType is an enumeration of all supported system dialog types
-type DialogType int
-
-const (
-	// DialogTypeOpen is a system file open dialog
-	DialogTypeOpen DialogType = iota
-	// DialogTypeSave is a system file save dialog
-	DialogTypeSave
-	// DialogTypeAlert is a system alert dialog (message box)
-	DialogTypeAlert
-)
-
-const (
-	// DialogFlagFile is a normal file picker dialog
-	DialogFlagFile = C.WEBVIEW_DIALOG_FLAG_FILE
-	// DialogFlagDirectory is an open directory dialog
-	DialogFlagDirectory = C.WEBVIEW_DIALOG_FLAG_DIRECTORY
-	// DialogFlagInfo is an info alert dialog
-	DialogFlagInfo = C.WEBVIEW_DIALOG_FLAG_INFO
-	// DialogFlagWarning is a warning alert dialog
-	DialogFlagWarning = C.WEBVIEW_DIALOG_FLAG_WARNING
-	// DialogFlagError is an error dialog
-	DialogFlagError = C.WEBVIEW_DIALOG_FLAG_ERROR
-)
-
-var (
-	m     sync.Mutex
-	index uintptr
-	fns   = map[uintptr]func(){}
-	cbs   = map[WebView]ExternalInvokeCallbackFunc{}
-)
-
-type webview struct {
-	w unsafe.Pointer
-}
-
-var _ WebView = &webview{}
-
-func boolToInt(b bool) int {
-	if b {
-		return 1
-	}
-	return 0
-}
-
-// NewWebview creates and opens a new webview window using the given settings. The
-// returned object implements the WebView interface. This function returns nil
-// if a window can not be created.
-func NewWebview(settings Settings) WebView {
-	if settings.Width == 0 {
-		settings.Width = 640
-	}
-	if settings.Height == 0 {
-		settings.Height = 480
-	}
-	if settings.Title == "" {
-		settings.Title = "WebView"
-	}
-	w := &webview{}
-	w.w = C.CgoWebViewCreate(C.int(settings.Width), C.int(settings.Height),
-		C.CString(settings.Title), C.CString(settings.URL),
-		C.int(boolToInt(settings.Resizable)), C.int(boolToInt(settings.Debug)))
-	m.Lock()
-	if settings.ExternalInvokeCallback != nil {
-		cbs[w] = settings.ExternalInvokeCallback
-	} else {
-		cbs[w] = func(w WebView, data string) {}
-	}
-	m.Unlock()
-	return w
-}
-
-func (w *webview) Loop(blocking bool) bool {
-	block := C.int(0)
-	if blocking {
-		block = 1
-	}
-	return C.CgoWebViewLoop(w.w, block) == 0
-}
-
-func (w *webview) Run() {
-	for w.Loop(true) {
-	}
-}
-
-func (w *webview) Exit() {
-	C.CgoWebViewExit(w.w)
-}
-
-func (w *webview) Dispatch(f func()) {
-	m.Lock()
-	for ; fns[index] != nil; index++ {
-	}
-	fns[index] = f
-	m.Unlock()
-	C.CgoWebViewDispatch(w.w, C.uintptr_t(index))
-}
-
-func (w *webview) SetTitle(title string) {
-	p := C.CString(title)
-	defer C.free(unsafe.Pointer(p))
-	C.CgoWebViewSetTitle(w.w, p)
-}
-
-func (w *webview) SetColor(r, g, b, a uint8) {
-	C.CgoWebViewSetColor(w.w, C.uint8_t(r), C.uint8_t(g), C.uint8_t(b), C.uint8_t(a))
-}
-
-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, filter string) string {
-	const maxPath = 4096
-	titlePtr := C.CString(title)
-	defer C.free(unsafe.Pointer(titlePtr))
-	argPtr := C.CString(arg)
-	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), filterPtr)
-	return C.GoString(resultPtr)
-}
-
-func (w *webview) Eval(js string) error {
-	p := C.CString(js)
-	defer C.free(unsafe.Pointer(p))
-	switch C.CgoWebViewEval(w.w, p) {
-	case -1:
-		return errors.New("evaluation failed")
-	}
-	return nil
-}
-
-func (w *webview) InjectCSS(css string) {
-	p := C.CString(css)
-	defer C.free(unsafe.Pointer(p))
-	C.CgoWebViewInjectCSS(w.w, p)
-}
-
-func (w *webview) Terminate() {
-	C.CgoWebViewTerminate(w.w)
-}
-
-//export _webviewDispatchGoCallback
-func _webviewDispatchGoCallback(index unsafe.Pointer) {
-	var f func()
-	m.Lock()
-	f = fns[uintptr(index)]
-	delete(fns, uintptr(index))
-	m.Unlock()
-	f()
-}
-
-//export _webviewExternalInvokeCallback
-func _webviewExternalInvokeCallback(w unsafe.Pointer, data unsafe.Pointer) {
-	m.Lock()
-	var (
-		cb ExternalInvokeCallbackFunc
-		wv WebView
-	)
-	for wv, cb = range cbs {
-		if wv.(*webview).w == w {
-			break
-		}
-	}
-	m.Unlock()
-	cb(wv, C.GoString((*C.char)(data)))
-}

package-lock.json

@@ -0,0 +1,3 @@
+{
+  "lockfileVersion": 1
+}

runtime/assets.go

@@ -0,0 +1,15 @@
+package runtime
+
+import _ "embed"
+
+//go:embed assets/bridge.js
+var BridgeJS []byte
+
+//go:embed assets/wails.js
+var WailsJS string
+
+//go:embed assets/wails.css
+var WailsCSS string
+
+//go:embed js/runtime/init.js
+var InitJS []byte

runtime/assets/default.html

@@ -1,18 +0,0 @@
-<!DOCTYPE html>
-<html lang="en">
-
-<head>
-  <meta charset="utf-8">
-  <meta http-equiv="X-UA-Compatible" content="IE=edge">
-</head>
-
-<body>
-  <div id="app"></div>
-  <script type="text/javascript">function AddScript(js, callbackID) {
-      var script = document.createElement('script');
-      script.text = js;
-      document.body.appendChild(script);
-    }</script>
-</body>
-
-</html>

runtime/events.go

@@ -19,6 +19,16 @@ func (r *Events) On(eventName string, callback func(optionalData ...interface{})
 	r.eventManager.On(eventName, callback)
 }
 
+// Once pass through
+func (r *Events) Once(eventName string, callback func(optionalData ...interface{})) {
+	r.eventManager.Once(eventName, callback)
+}
+
+// OnMultiple pass through
+func (r *Events) OnMultiple(eventName string, callback func(optionalData ...interface{}), counter uint) {
+	r.eventManager.OnMultiple(eventName, callback, counter)
+}
+
 // Emit pass through
 func (r *Events) Emit(eventName string, optionalData ...interface{}) {
 	r.eventManager.Emit(eventName, optionalData...)

runtime/js/core/main.js

@@ -13,7 +13,7 @@ import * as Browser from './browser';
 import { On, OnMultiple, Emit, Notify, Heartbeat, Acknowledge } from './events';
 import { NewBinding } from './bindings';
 import { Callback } from './calls';
-import { AddScript, InjectCSS } from './utils';
+import { AddScript, InjectCSS, InjectFirebug } from './utils';
 import { AddIPCListener } from './ipc';
 import * as Store from './store';
 
@@ -60,6 +60,11 @@ window.onerror = function (msg, url, lineNo, columnNo, error) {
 	window.wails.Log.Error('error: ' + error);
 };
 
+// Use firebug?
+if( window.usefirebug ) { 
+	InjectFirebug();
+}
+
 // Emit loaded event
 Emit('wails:loaded');
 

runtime/js/core/utils.js

@@ -20,6 +20,18 @@ export function AddScript(js, callbackID) {
 	}
 }
 
+export function InjectFirebug() {
+	// set the debug attribute on HTML
+	var html = document.getElementsByTagName('html')[0];
+	html.setAttribute('debug', 'true');
+	var firebugURL = 'https://wails.app/assets/js/firebug-lite.js#startOpened=true,disableWhenFirebugActive=false';
+	var script = document.createElement('script');
+	script.src = firebugURL;
+	script.type = 'application/javascript';
+	document.head.appendChild(script);
+	window.wails.Log.Info('Injected firebug');
+}
+
 // Adapted from webview - thanks zserge!
 export function InjectCSS(css) {
 	var elem = document.createElement('style');

runtime/js/package-lock.json

@@ -2681,26 +2681,18 @@
       "dev": true
     },
     "elliptic": {
-      "version": "6.5.3",
-      "resolved": "https://registry.npmjs.org/elliptic/-/elliptic-6.5.3.tgz",
-      "integrity": "sha512-IMqzv5wNQf+E6aHeIqATs0tOLeOTwj1QKbRcS3jBbYkl5oLAserA8yJTT7/VyHUYG91PRmPyeQDObKLPpeS4dw==",
+      "version": "6.5.4",
+      "resolved": "https://registry.npmjs.org/elliptic/-/elliptic-6.5.4.tgz",
+      "integrity": "sha512-iLhC6ULemrljPZb+QutR5TQGB+pdW6KGD5RSegS+8sorOZT+rdQFbsQFJgvN3eRqNALqJer4oQ16YvJHlU8hzQ==",
       "dev": true,
       "requires": {
-        "bn.js": "^4.4.0",
-        "brorand": "^1.0.1",
+        "bn.js": "^4.11.9",
+        "brorand": "^1.1.0",
         "hash.js": "^1.0.0",
-        "hmac-drbg": "^1.0.0",
-        "inherits": "^2.0.1",
-        "minimalistic-assert": "^1.0.0",
-        "minimalistic-crypto-utils": "^1.0.0"
-      },
-      "dependencies": {
-        "bn.js": {
-          "version": "4.11.9",
-          "resolved": "https://registry.npmjs.org/bn.js/-/bn.js-4.11.9.tgz",
-          "integrity": "sha512-E6QoYqCKZfgatHTdHzs1RRKP7ip4vvm+EyRUeE2RF0NblwVvb0p6jSVeNTOFxPn26QXN2o6SMfNxKp6kU8zQaw==",
-          "dev": true
-        }
+        "hmac-drbg": "^1.0.1",
+        "inherits": "^2.0.4",
+        "minimalistic-assert": "^1.0.1",
+        "minimalistic-crypto-utils": "^1.0.1"
       }
     },
     "emoji-regex": {
@@ -3959,9 +3951,9 @@
       "dev": true
     },
     "ini": {
-      "version": "1.3.5",
-      "resolved": "https://registry.npmjs.org/ini/-/ini-1.3.5.tgz",
-      "integrity": "sha512-RZY5huIKCMRWDUqZlEi72f/lmXKMvuszcMBduliQ3nnWbx9X/ZBQO7DijMEYS9EhHBb2qacRUMtC7svLwe0lcw==",
+      "version": "1.3.8",
+      "resolved": "https://registry.npmjs.org/ini/-/ini-1.3.8.tgz",
+      "integrity": "sha512-JV/yugV2uzW5iMRSiZAyDtQd+nxtUnjeLt0acNdw98kKLrvuRVyB80tsREOE7yvGVgalhZ6RNXCmEHkUKBKxew==",
       "dev": true
     },
     "interpret": {
@@ -6590,9 +6582,9 @@
       "dev": true
     },
     "y18n": {
-      "version": "4.0.0",
-      "resolved": "https://registry.npmjs.org/y18n/-/y18n-4.0.0.tgz",
-      "integrity": "sha512-r9S/ZyXu/Xu9q1tYlpsLIsa3EeLXXk0VwlxqTcFRfg9EhMW+17kbt9G0NrgCmhGb5vT2hyhJZLfDGx+7+5Uj/w==",
+      "version": "4.0.1",
+      "resolved": "https://registry.npmjs.org/y18n/-/y18n-4.0.1.tgz",
+      "integrity": "sha512-wNcy4NvjMYL8gogWWYAO7ZFWFfHcbdbE57tZO8e4cbpj8tfUcwrwqSl3ad8HxpYWCdXcJUCeKKZS62Av1affwQ==",
       "dev": true
     },
     "yallist": {

runtime/js/runtime/package-lock.json

@@ -1,6 +1,6 @@
 {
   "name": "@wailsapp/runtime",
-  "version": "1.1.0",
+  "version": "1.1.1",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
@@ -130,9 +130,9 @@
       "dev": true
     },
     "ini": {
-      "version": "1.3.5",
-      "resolved": "https://registry.npmjs.org/ini/-/ini-1.3.5.tgz",
-      "integrity": "sha512-RZY5huIKCMRWDUqZlEi72f/lmXKMvuszcMBduliQ3nnWbx9X/ZBQO7DijMEYS9EhHBb2qacRUMtC7svLwe0lcw==",
+      "version": "1.3.8",
+      "resolved": "https://registry.npmjs.org/ini/-/ini-1.3.8.tgz",
+      "integrity": "sha512-JV/yugV2uzW5iMRSiZAyDtQd+nxtUnjeLt0acNdw98kKLrvuRVyB80tsREOE7yvGVgalhZ6RNXCmEHkUKBKxew==",
       "dev": true
     },
     "invert-kv": {
@@ -451,9 +451,9 @@
       }
     },
     "y18n": {
-      "version": "3.2.1",
-      "resolved": "https://registry.npmjs.org/y18n/-/y18n-3.2.1.tgz",
-      "integrity": "sha1-bRX7qITAhnnA136I53WegR4H+kE=",
+      "version": "3.2.2",
+      "resolved": "https://registry.npmjs.org/y18n/-/y18n-3.2.2.tgz",
+      "integrity": "sha512-uGZHXkHnhF0XeeAPgnKfPv1bgKAYyVvmNL1xlKsPYZPaIHxGti2hHqvOCQv71XMsLxu1QjergkqogUnms5D3YQ==",
       "dev": true
     },
     "yargs": {

runtime/store.go

@@ -286,5 +286,13 @@ func (s *Store) Update(updater interface{}) {
 	results := reflect.ValueOf(updater).Call(args)
 
 	// We will only have 1 result. Set the store to it
-	s.Set(results[0].Interface())
+	err = s.Set(results[0].Interface())
+	if err != nil && s.errorHandler != nil {
+		s.errorHandler(err)
+	}
+}
+
+// Get returns the value of the data that's kept in the current state / Store
+func (s *Store) Get() interface{} {
+	return s.data.Interface()
 }

runtime/window.go

@@ -67,6 +67,16 @@ func (r *Window) SetColour(colour string) error {
 	return r.renderer.SetColour(colour)
 }
 
+// SetMinSize sets the minimum size of a resizable window
+func (r *Window) SetMinSize(width, height int) {
+	r.renderer.SetMinSize(width, height)
+}
+
+// SetMaxSize sets the maximum size of a resizable window
+func (r *Window) SetMaxSize(width, height int) {
+	r.renderer.SetMaxSize(width, height)
+}
+
 // Fullscreen makes the window fullscreen
 func (r *Window) Fullscreen() {
 	r.renderer.Fullscreen()

scripts/build.go

@@ -8,38 +8,6 @@ import (
 	"path/filepath"
 )
 
-// Default target to run when none is specified
-// If not set, running mage will list available targets
-// var Default = Build
-
-/*
-# Build runtime
-echo "**** Building Runtime ****"
-cd runtime/js
-npm install
-npm run build
-cd ../..
-
-echo "**** Packing Assets ****"
-cd cmd
-mewn
-cd ..
-cd lib/renderer
-mewn
-cd ../..
-
-echo "**** Installing Wails locally ****"
-cd cmd/wails
-go install
-cd ../..
-
-echo "**** Tidying the mods! ****"
-go mod tidy
-
-echo "**** WE ARE DONE! ****"
-
-*/
-
 func runCommand(command string, args ...string) {
 	cmd := exec.Command(command, args...)
 	output, err := cmd.CombinedOutput()
@@ -48,7 +16,6 @@ func runCommand(command string, args ...string) {
 		log.Println(string(output))
 		log.Fatal(err)
 	}
-	cmd.Run()
 	fmt.Println(string(output))
 }
 
@@ -60,26 +27,26 @@ func main() {
 	// Build Runtime
 	fmt.Println("**** Building Runtime ****")
 	runtimeDir, _ := filepath.Abs(filepath.Join(dir, "..", "runtime", "js"))
-	os.Chdir(runtimeDir)
+	err := os.Chdir(runtimeDir)
+	if err != nil {
+		log.Fatal(err)
+	}
 	runCommand("npm", "install")
 	runCommand("npm", "run", "build")
 
-	// Pack assets
-	fmt.Println("**** Packing Assets ****")
-	rendererDir, _ := filepath.Abs(filepath.Join(dir, "..", "lib", "renderer"))
-	os.Chdir(rendererDir)
-	runCommand("mewn")
-	cmdDir, _ := filepath.Abs(filepath.Join(dir, "..", "cmd"))
-	os.Chdir(cmdDir)
-	runCommand("mewn")
-
 	// Install Wails
 	fmt.Println("**** Installing Wails locally ****")
 	execDir, _ := filepath.Abs(filepath.Join(dir, "..", "cmd", "wails"))
-	os.Chdir(execDir)
+	err = os.Chdir(execDir)
+	if err != nil {
+		log.Fatal(err)
+	}
 	runCommand("go", "install")
 
 	baseDir, _ := filepath.Abs(filepath.Join(dir, ".."))
-	os.Chdir(baseDir)
+	err = os.Chdir(baseDir)
+	if err != nil {
+		log.Fatal(err)
+	}
 	runCommand("go", "mod", "tidy")
 }

scripts/build.sh

@@ -1,7 +1,7 @@
 #!/usr/bin/env bash
 
 echo "**** Checking if Wails passes unit tests ****"
-if ! go test ./...
+if ! go test ./lib/... ./runtime/... ./cmd/...
 then
     echo ""
     echo "ERROR: Unit tests failed!"
@@ -15,15 +15,6 @@ npm install
 npm run build
 cd ../..
 
-echo "**** Packing Assets ****"
-cd cmd
-mewn
-cd ..
-cd lib/renderer
-mewn
-cd ../..
-
-
 cd cmd/wails
 echo "**** Checking if Wails compiles ****"
 if ! go build .

scripts/updateversion.sh

@@ -16,7 +16,6 @@ cd runtime/js
 npm run build
 
 cd ../..
-mewn
 
 git add cmd/version.go
 git commit cmd/version.go -m "Bump to ${TAG}"