lint fix

* Add global error handler for runtime

* Set DPI Aware on windows

CONTRIBUTORS.md

@@ -2,21 +2,22 @@
 
 Wails is what it is because of the time and effort given by these great people. A huge thank you to each and every one!
 
-* [Dustin Krysak](https://wiki.ubuntu.com/bashfulrobot)
-* [Qais Patankar](https://github.com/qaisjp)
-* [Anthony Lee](https://github.com/alee792)
-* [Adrian Lanzafame](https://github.com/lanzafame)
-* [Mattn](https://github.com/mattn)
-* [0xflotus](https://github.com/0xflotus)
-* [Michael D Henderson](https://github.com/mdhender)
-* [fred2104](https://github.com/fishfishfish2104)
-* [intelwalk](https://github.com/intelwalk)
-* [Mark Stenglein](https://github.com/ocelotsloth)
-* [admin_3.exe](https://github.com/bh90210)
-* [iceleo-com](https://github.com/iceleo-com)
-* [fallendusk](https://github.com/fallendusk)
-* [Florian Didran](https://github.com/fdidron)
-* [Nikolai Zimmermann](https://github.com/Chronophylos)
-* [Toyam Cox](https://github.com/Vaelatern)
-* [Robin Eklind](https://github.com/mewmew)
-* [Kris Raney](https://github.com/kraney)
+  * [Dustin Krysak](https://wiki.ubuntu.com/bashfulrobot)
+  * [Qais Patankar](https://github.com/qaisjp)
+  * [Anthony Lee](https://github.com/alee792)
+  * [Adrian Lanzafame](https://github.com/lanzafame)
+  * [Mattn](https://github.com/mattn)
+  * [0xflotus](https://github.com/0xflotus)
+  * [Michael D Henderson](https://github.com/mdhender)
+  * [fred2104](https://github.com/fishfishfish2104)
+  * [intelwalk](https://github.com/intelwalk)
+  * [Mark Stenglein](https://github.com/ocelotsloth)
+  * [admin_3.exe](https://github.com/bh90210)
+  * [iceleo-com](https://github.com/iceleo-com)
+  * [fallendusk](https://github.com/fallendusk)
+  * [Florian Didran](https://github.com/fdidron)
+  * [Nikolai Zimmermann](https://github.com/Chronophylos)
+  * [Toyam Cox](https://github.com/Vaelatern)
+  * [Robin Eklind](https://github.com/mewmew)
+  * [Kris Raney](https://github.com/kraney)
+  * [Jack Mordaunt](https://github.com/JackMordaunt)

app.go

@@ -1,7 +1,9 @@
 package wails
 
 import (
+	"fmt"
 	"os"
+	"runtime"
 	"syscall"
 
 	"github.com/syossan27/tebata"
@@ -43,7 +45,7 @@ func CreateApp(optionalConfig ...*AppConfig) *App {
 	}
 
 	result := &App{
-		logLevel:       "info",
+		logLevel:       "debug",
 		renderer:       renderer.NewWebView(),
 		ipc:            ipc.NewManager(),
 		bindingManager: binding.NewManager(),
@@ -65,9 +67,28 @@ func CreateApp(optionalConfig ...*AppConfig) *App {
 		result.config.DisableInspector = true
 	}
 
+	// If running windows, do a hidpi fix
+	if runtime.GOOS == "windows" {
+		err := SetProcessDPIAware()
+		if err != nil {
+			result.log.Fatalf(err.Error())
+		}
+	}
+
 	return result
 }
 
+// SetProcessDPIAware via user32.dll
+// https://docs.microsoft.com/en-us/windows/win32/api/winuser/nf-winuser-setprocessdpiaware
+// Also, thanks Jack Mordaunt! https://github.com/wailsapp/wails/issues/293
+func SetProcessDPIAware() error {
+	status, r, err := syscall.NewLazyDLL("user32.dll").NewProc("SetProcessDPIAware").Call()
+	if status == 0 {
+		return fmt.Errorf("exit status %d: %v %v", status, r, err)
+	}
+	return nil
+}
+
 // Run the app
 func (a *App) Run() error {
 
@@ -102,6 +123,11 @@ 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/helpers.go

@@ -7,6 +7,7 @@ import (
 	"os/exec"
 	"path/filepath"
 	"runtime"
+	"strings"
 	"time"
 
 	"github.com/leaanthony/mewn"
@@ -87,6 +88,17 @@ func BuildApplication(binaryName string, forceRebuild bool, buildMode string, pa
 	buildCommand.Add("build")
 
 	if binaryName != "" {
+		// Alter binary name based on OS
+		switch runtime.GOOS {
+		case "windows":
+			if !strings.HasSuffix(binaryName, ".exe") {
+				binaryName += ".exe"
+			}
+		default:
+			if strings.HasSuffix(binaryName, ".exe") {
+				binaryName = strings.TrimSuffix(binaryName, ".exe")
+			}
+		}
 		buildCommand.Add("-o")
 		buildCommand.Add(binaryName)
 	}
@@ -103,7 +115,7 @@ func BuildApplication(binaryName string, forceRebuild bool, buildMode string, pa
 	}
 
 	// Add windows flags
-	if runtime.GOOS == "windows" {
+	if runtime.GOOS == "windows" && buildMode == BuildModeProd {
 		ldflags += "-H windowsgui "
 	}
 

cmd/package.go

@@ -191,8 +191,15 @@ func (b *PackageHelper) PackageWindows(po *ProjectOptions, cleanUp bool) error {
 
 	// Build syso
 	sysofile := filepath.Join(b.fs.Cwd(), basename+"-res.syso")
-	windresCommand := []string{"windres", "-o", sysofile, tgtRCFile}
-	err := NewProgramHelper().RunCommandArray(windresCommand)
+
+	batfile, err := fs.LocalDir(".")
+	if err != nil {
+		return err
+	}
+
+	windresBatFile := filepath.Join(batfile.fullPath, "windres.bat")
+	windresCommand := []string{windresBatFile, sysofile, tgtRCFile}
+	err = NewProgramHelper().RunCommandArray(windresCommand)
 	if err != nil {
 		return err
 	}

cmd/program.go

@@ -100,6 +100,19 @@ func (p *ProgramHelper) InstallGoPackage(packageName string) error {
 	return err
 }
 
+// InstallNPMPackage installs the given npm package
+func (p *ProgramHelper) InstallNPMPackage(packageName string, save bool) error {
+	args := strings.Split("install "+packageName, " ")
+	if save {
+		args = append(args, "--save")
+	}
+	_, stderr, err := p.shell.Run("npm", args...)
+	if err != nil {
+		fmt.Println(stderr)
+	}
+	return err
+}
+
 // RunCommand runs the given command
 func (p *ProgramHelper) RunCommand(command string) error {
 	args := strings.Split(command, " ")
@@ -115,6 +128,7 @@ func (p *ProgramHelper) RunCommandArray(args []string, dir ...string) error {
 		fmt.Printf("ERROR: Looks like '%s' isn't installed. Please install and try again.", program)
 		return err
 	}
+
 	args = args[1:]
 	var stderr string
 	var stdout string

cmd/project.go

@@ -13,6 +13,18 @@ import (
 	"github.com/leaanthony/slicer"
 )
 
+// PackageManager indicates different package managers
+type PackageManager int
+
+const (
+	// UNKNOWN package manager
+	UNKNOWN PackageManager = iota
+	// NPM package manager
+	NPM
+	// YARN package manager
+	YARN
+)
+
 type author struct {
 	Name  string `json:"name"`
 	Email string `json:"email"`
@@ -153,6 +165,23 @@ func (po *ProjectOptions) Defaults() {
 	po.WailsVersion = Version
 }
 
+// GetNPMBinaryName returns the type of package manager used by the project
+func (po *ProjectOptions) GetNPMBinaryName() (PackageManager, error) {
+	if po.FrontEnd == nil {
+		return UNKNOWN, fmt.Errorf("No frontend specified in project options")
+	}
+
+	if strings.Index(po.FrontEnd.Install, "npm") > -1 {
+		return NPM, nil
+	}
+
+	if strings.Index(po.FrontEnd.Install, "yarn") > -1 {
+		return YARN, nil
+	}
+
+	return UNKNOWN, nil
+}
+
 // PromptForInputs asks the user to input project details
 func (po *ProjectOptions) PromptForInputs() error {
 

cmd/templates/angular-template/frontend/browserslist

@@ -9,4 +9,4 @@
 last 2 versions
 Firefox ESR
 not dead
-not IE 9-11 # For IE 9-11 support, remove 'not'.
+IE 9-11 # For IE 9-11 support, remove 'not'.

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

@@ -22,6 +22,7 @@
     "@angular/platform-browser-dynamic": "~8.0.1",
     "@angular/router": "~8.0.1",
     "@wailsapp/runtime": "^1.0.0",
+    "core-js": "^3.4.4",
     "ngx-build-plus": "^8.0.3",
     "rxjs": "~6.4.0",
     "tslib": "^1.9.0",

cmd/templates/angular-template/frontend/src/main.ts

@@ -1,3 +1,4 @@
+import 'core-js/stable';
 import { enableProdMode } from '@angular/core';
 import { platformBrowserDynamic } from '@angular/platform-browser-dynamic';
 

cmd/templates/angular-template/frontend/src/wailsbridge.js

@@ -1,17 +0,0 @@
-/*
-    Wails Bridge (c) 2019-present Lea Anthony
-
-    This prod version is to get around having to rewrite your code
-    for production. When doing a release build, this file will be used 
-    instead of the full version.
-*/
-
-export default {
-  // The main function
-  // Passes the main Wails object to the callback if given.
-  Start: function(callback) {
-    if (callback) {
-      window.wails.events.on("wails:ready", callback);
-    }
-  }
-};

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

@@ -11,7 +11,7 @@
     "module": "esnext",
     "moduleResolution": "node",
     "importHelpers": true,
-    "target": "es2015",
+    "target": "es5",
     "typeRoots": [
       "node_modules/@types"
     ],
@@ -20,4 +20,4 @@
       "dom"
     ]
   }
-}
+}

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

@@ -11,7 +11,7 @@ func basic() string {
 
 func main() {
 
-	js := mewn.String("./frontend/dist/my-app/main-es2015.js")
+	js := mewn.String("./frontend/dist/my-app/main.js")
 	css := mewn.String("./frontend/dist/my-app/styles.css")
 
 	app := wails.CreateApp(&wails.AppConfig{

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

@@ -1,17 +0,0 @@
-/*
-    Wails Bridge (c) 2019-present Lea Anthony
-
-    This prod version is to get around having to rewrite your code
-    for production. When doing a release build, this file will be used 
-    instead of the full version.
-*/
-
-export default {
-  // The main function
-  // Passes the main Wails object to the callback if given.
-  Start: function (callback) {
-    if (callback) {
-      window.wails.Events.On("wails:ready", callback);
-    }
-  }
-};

cmd/version.go

@@ -1,4 +1,4 @@
 package cmd
 
 // Version - Wails version
-const Version = "v0.18.7-pre"
+const Version = "v0.19.0"

cmd/wails/15_migrate.go

@@ -0,0 +1,408 @@
+package main
+
+import (
+	"bufio"
+	"fmt"
+	"io/ioutil"
+	"log"
+	"os"
+	"path/filepath"
+	"regexp"
+	"strings"
+
+	"github.com/Masterminds/semver"
+	"github.com/leaanthony/spinner"
+	"github.com/wailsapp/wails/cmd"
+)
+
+// Constants
+var checkSpinner = spinner.NewSpinner()
+var migrateProjectOptions = &cmd.ProjectOptions{}
+var migrateFS = cmd.NewFSHelper()
+var migrateGithub = cmd.NewGitHubHelper()
+var programHelper = cmd.NewProgramHelper()
+var lessThanV1 *semver.Constraints
+
+// The user's go.mod
+var goMod string
+var goModFile string
+
+// The user's main.js
+var mainJSFile string
+var mainJSContents string
+
+// Frontend directory
+var frontEndDir string
+
+func init() {
+
+	var dryrun bool
+	var err error
+
+	lessThanV1, err = semver.NewConstraint("< v1.0.0")
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	// var forceRebuild = false
+	checkSpinner.SetSpinSpeed(50)
+
+	commandDescription := `EXPERIMENTAL - This command attempts to migrate projects to the latest Wails version.`
+	updateCmd := app.Command("migrate", "Migrate projects to latest Wails release").
+		LongDescription(commandDescription).
+		BoolFlag("dryrun", "Only display what would be done", &dryrun)
+
+	updateCmd.Action(func() error {
+
+		message := "Migrate Project"
+		logger.PrintSmallBanner(message)
+		logger.Red("WARNING: This is an experimental command. Ensure you have backups of your project!")
+		logger.Red("It currently only supports npm based projects.")
+		fmt.Println()
+
+		// Check project directory
+		err := checkProjectDirectory()
+		if err != nil {
+			return err
+		}
+
+		// Find Wails version from go.mod
+		wailsVersion, err := getWailsVersion()
+		if err != nil {
+			return err
+		}
+
+		// Get latest stable version
+		var latestVersion *semver.Version
+		latestVersion, err = getLatestWailsVersion()
+		if err != nil {
+			return err
+		}
+
+		var canMigrate bool
+		canMigrate, err = canMigrateVersion(wailsVersion, latestVersion)
+		if err != nil {
+			return err
+		}
+
+		if !canMigrate {
+			return nil
+		}
+
+		// Check for wailsbridge
+		wailsBridge, err := checkWailsBridge()
+		if err != nil {
+			return err
+		}
+
+		// Is main.js using bridge.Init()
+		canUpdateMainJS, err := checkMainJS()
+		if err != nil {
+			return err
+		}
+
+		// TODO: Check if we are using legacy js runtime
+
+		// Operations
+		logger.Yellow("Operations to perform:")
+
+		logger.Yellowf("  - Update to Wails v%s\n", latestVersion)
+
+		if len(wailsBridge) > 0 {
+			logger.Yellow("  - Delete wailsbridge.js")
+		}
+
+		if canUpdateMainJS {
+			logger.Yellow("  - Patch main.js")
+		}
+
+		logger.Yellow("  - Ensure '@wailsapp/runtime` module is installed")
+
+		if dryrun {
+			logger.White("Exiting: Dry Run")
+			return nil
+		}
+
+		logger.Red("*WARNING* About to modify your project!")
+		logger.Red("Type 'YES' to continue: ")
+		scanner := bufio.NewScanner(os.Stdin)
+		scanner.Scan()
+		input := scanner.Text()
+		if input != "YES" {
+			logger.Red("ABORTED!")
+			return nil
+		}
+
+		logger.Yellow("Let's do this!")
+
+		err = updateWailsVersion(wailsVersion, latestVersion)
+		if err != nil {
+			return err
+		}
+
+		if len(wailsBridge) > 0 {
+			err = deleteWailsBridge(wailsBridge)
+			if err != nil {
+				return err
+			}
+		}
+
+		if canUpdateMainJS {
+			err = patchMainJS()
+			if err != nil {
+				return err
+			}
+		}
+
+		// Install runtime
+		err = installWailsRuntime()
+		if err != nil {
+			return err
+		}
+
+		fmt.Println()
+		logger.Yellow("Migration complete! Check project by running `wails build`.")
+		return nil
+	})
+}
+
+func checkProjectDirectory() error {
+	// Get versions
+	checkSpinner.Start("Check Project Directory")
+
+	// Check we are in project directory
+	err := migrateProjectOptions.LoadConfig(migrateFS.Cwd())
+	if err != nil {
+		checkSpinner.Error()
+		return fmt.Errorf("Unable to find 'project.json'. Please check you are in a Wails project directory")
+	}
+
+	checkSpinner.Success()
+	return nil
+}
+
+func getWailsVersion() (*semver.Version, error) {
+	checkSpinner.Start("Get Wails Version")
+	var result *semver.Version
+
+	// Load file
+	var err error
+	goModFile, err = filepath.Abs(filepath.Join(".", "go.mod"))
+	if err != nil {
+		checkSpinner.Error()
+		return nil, fmt.Errorf("Unable to load go.mod at %s", goModFile)
+	}
+	goMod, err = migrateFS.LoadAsString(goModFile)
+	if err != nil {
+		checkSpinner.Error()
+		return nil, fmt.Errorf("Unable to load go.mod")
+	}
+
+	// Find wails version
+	versionRegexp := regexp.MustCompile(`.*github.com/wailsapp/wails.*(v\d+.\d+.\d+)`)
+	versions := versionRegexp.FindStringSubmatch(goMod)
+
+	if len(versions) != 2 {
+		return nil, fmt.Errorf("Unable to determine Wails version")
+	}
+
+	version := versions[1]
+	result, err = semver.NewVersion(version)
+	if err != nil {
+		return nil, fmt.Errorf("Unable to parse Wails version: %s", version)
+	}
+	checkSpinner.Success("Found Wails Version: " + version)
+	return result, nil
+
+}
+
+func canMigrateVersion(wailsVersion *semver.Version, latestVersion *semver.Version) (bool, error) {
+	checkSpinner.Start("Checking ability to Migrate")
+
+	// Check if we are at the latest version!!!!
+	if wailsVersion.Equal(latestVersion) || wailsVersion.GreaterThan(latestVersion) {
+		checkSpinner.Errorf("Checking ability to Migrate: No! (v%s >= v%s)", wailsVersion, latestVersion)
+		return false, nil
+	}
+
+	// Check for < v1.0.0
+	if lessThanV1.Check(wailsVersion) {
+		checkSpinner.Successf("Checking ability to Migrate: Yes! (v%s < v1.0.0)", wailsVersion)
+		return true, nil
+	}
+	checkSpinner.Error("Unable to migrate")
+	return false, fmt.Errorf("No migration rules for version %s", wailsVersion)
+}
+
+func checkWailsBridge() (string, error) {
+	checkSpinner.Start("Checking if legacy Wails Bridge present")
+
+	// Check frontend dir is available
+	if migrateProjectOptions.FrontEnd == nil ||
+		len(migrateProjectOptions.FrontEnd.Dir) == 0 ||
+		!migrateFS.DirExists(migrateProjectOptions.FrontEnd.Dir) {
+		checkSpinner.Error("Unable to determine frontend directory")
+		return "", fmt.Errorf("Unable to determine frontend directory")
+	}
+
+	frontEndDir = migrateProjectOptions.FrontEnd.Dir
+
+	wailsBridgePath, err := filepath.Abs(filepath.Join(".", frontEndDir, "src", "wailsbridge.js"))
+	if err != nil {
+		checkSpinner.Error(err.Error())
+		return "", err
+	}
+
+	// If it doesn't exist, return blank string
+	if !migrateFS.FileExists(wailsBridgePath) {
+		checkSpinner.Success("Checking if legacy Wails Bridge present: No")
+		return "", nil
+	}
+
+	checkSpinner.Success("Checking if legacy Wails Bridge present: Yes")
+	return wailsBridgePath, nil
+
+}
+
+// This function determines if the main.js file using wailsbridge can be auto-updated
+func checkMainJS() (bool, error) {
+
+	checkSpinner.Start("Checking if main.js can be migrated")
+	var err error
+
+	// Check main.js is there
+	if migrateProjectOptions.FrontEnd == nil ||
+		len(migrateProjectOptions.FrontEnd.Dir) == 0 ||
+		!migrateFS.DirExists(migrateProjectOptions.FrontEnd.Dir) {
+		checkSpinner.Error("Unable to determine frontend directory")
+		return false, fmt.Errorf("Unable to determine frontend directory")
+	}
+
+	frontEndDir = migrateProjectOptions.FrontEnd.Dir
+
+	mainJSFile, err = filepath.Abs(filepath.Join(".", frontEndDir, "src", "main.js"))
+	if err != nil {
+		checkSpinner.Error("Unable to find main.js")
+		return false, err
+	}
+
+	mainJSContents, err = migrateFS.LoadAsString(mainJSFile)
+	if err != nil {
+		checkSpinner.Error("Unable to load main.js")
+		return false, err
+	}
+
+	// Check we have a line like: import Bridge from "./wailsbridge";
+	if strings.Index(mainJSContents, `import Bridge from "./wailsbridge";`) == -1 {
+		checkSpinner.Success("Checking if main.js can be migrated: No - Cannot find `import Bridge`")
+		return false, nil
+	}
+
+	// Check we have a line like: Bridge.Start(() => {
+	if strings.Index(mainJSContents, `Bridge.Start(`) == -1 {
+		checkSpinner.Success("Checking if main.js can be migrated: No - Cannot find `Bridge.Start`")
+		return false, nil
+	}
+	checkSpinner.Success("Checking if main.js can be migrated: Yes")
+	return true, nil
+}
+
+func getLatestWailsVersion() (*semver.Version, error) {
+	checkSpinner.Start("Checking GitHub for latest Wails version")
+	version, err := migrateGithub.GetLatestStableRelease()
+	if err != nil {
+		checkSpinner.Error("Checking GitHub for latest Wails version: Failed")
+		return nil, err
+	}
+
+	checkSpinner.Successf("Checking GitHub for latest Wails version: v%s", version)
+	return version.Version, nil
+}
+
+func updateWailsVersion(currentVersion, latestVersion *semver.Version) error {
+	// Patch go.mod
+	checkSpinner.Start("Patching go.mod")
+
+	wailsModule := "github.com/wailsapp/wails"
+	old := fmt.Sprintf("%s v%s", wailsModule, currentVersion)
+	new := fmt.Sprintf("%s v%s", wailsModule, latestVersion)
+
+	goMod = strings.Replace(goMod, old, new, -1)
+	err := ioutil.WriteFile(goModFile, []byte(goMod), 0600)
+	if err != nil {
+		checkSpinner.Error()
+		return err
+	}
+
+	checkSpinner.Success()
+	return nil
+}
+
+func deleteWailsBridge(bridgeFilename string) error {
+	// Patch go.mod
+	checkSpinner.Start("Delete legacy wailsbridge.js")
+
+	err := migrateFS.RemoveFile(bridgeFilename)
+	if err != nil {
+		checkSpinner.Error()
+		return err
+	}
+
+	checkSpinner.Success()
+	return nil
+}
+
+func patchMainJS() error {
+	// Patch main.js
+	checkSpinner.Start("Patching main.js")
+
+	// Patch import line
+	oldImportLine := `import Bridge from "./wailsbridge";`
+	newImportLine := `import * as Wails from "@wailsapp/runtime";`
+	mainJSContents = strings.Replace(mainJSContents, oldImportLine, newImportLine, -1)
+
+	// Patch Start line
+	oldStartLine := `Bridge.Start`
+	newStartLine := `Wails.Init`
+	mainJSContents = strings.Replace(mainJSContents, oldStartLine, newStartLine, -1)
+
+	err := ioutil.WriteFile(mainJSFile, []byte(mainJSContents), 0600)
+	if err != nil {
+		checkSpinner.Error()
+		return err
+	}
+
+	checkSpinner.Success()
+	return nil
+}
+
+func installWailsRuntime() error {
+
+	checkSpinner.Start("Installing @wailsapp/runtime module")
+
+	// Change to the frontend directory
+	err := os.Chdir(frontEndDir)
+	if err != nil {
+		checkSpinner.Error()
+		return nil
+	}
+
+	// Determine package manager
+	packageManager, err := migrateProjectOptions.GetNPMBinaryName()
+	if err != nil {
+		checkSpinner.Error()
+		return nil
+	}
+
+	switch packageManager {
+	case cmd.NPM:
+		// npm install --save @wailsapp/runtime
+		programHelper.InstallNPMPackage("@wailsapp/runtime", true)
+	default:
+		checkSpinner.Error()
+		return fmt.Errorf("Unknown package manager")
+	}
+
+	checkSpinner.Success()
+	return nil
+}

cmd/wails/9_issue.go

@@ -80,15 +80,16 @@ To help you in this process, we will ask for some information, add Go/Wails deta
 		npm := program.FindProgram("npm")
 		if npm != nil {
 			stdout, _, _, _ := npm.Run("--version")
-			nodeVersion = stdout
-			nodeVersion = nodeVersion[:len(nodeVersion)-1]
+			npmVersion = stdout
+			npmVersion = npmVersion[:len(npmVersion)-1]
+			npmVersion = strings.TrimSpace(npmVersion)
 		}
 
 		node := program.FindProgram("node")
 		if node != nil {
 			stdout, _, _, _ := node.Run("--version")
-			npmVersion = stdout
-			npmVersion = npmVersion[:len(npmVersion)-1]
+			nodeVersion = stdout
+			nodeVersion = nodeVersion[:len(nodeVersion)-1]
 		}
 
 		str.WriteString("\n| Name   | Value |\n| ----- | ----- |\n")

cmd/windres.bat

@@ -0,0 +1 @@
+windres.exe -o %1 %2

go.mod

@@ -30,4 +30,4 @@ require (
 	golang.org/x/text v0.3.0
 	gopkg.in/AlecAivazis/survey.v1 v1.8.4
 	gopkg.in/yaml.v3 v3.0.0-20190709130402-674ba3eaed22
-)
+)

lib/interfaces/renderer.go

@@ -3,10 +3,12 @@ package interfaces
 import (
 	"github.com/wailsapp/wails/lib/messages"
 )
+
 // Renderer is an interface describing a Wails target to render the app to
 type Renderer interface {
 	Initialise(AppConfig, IPCManager, EventManager) error
 	Run() error
+	EnableConsole()
 
 	// Binding
 	NewBinding(bindingName string) error

lib/renderer/bridge.go

@@ -74,6 +74,10 @@ func (h *Bridge) evalJS(js string, mtype messageType) error {
 	return nil
 }
 
+// EnableConsole not needed for bridge!
+func (h *Bridge) EnableConsole() {
+}
+
 func (h *Bridge) injectCSS(css string) {
 	// Minify css to overcome issues in the browser with carriage returns
 	minified, err := htmlmin.Minify([]byte(css), &htmlmin.Options{

lib/renderer/webview.go

@@ -19,12 +19,13 @@ import (
 // WebView defines the main webview application window
 // Default values in []
 type WebView struct {
-	window       wv.WebView // The webview object
-	ipc          interfaces.IPCManager
-	log          *logger.CustomLogger
-	config       interfaces.AppConfig
-	eventManager interfaces.EventManager
-	bindingCache []string
+	window        wv.WebView // The webview object
+	ipc           interfaces.IPCManager
+	log           *logger.CustomLogger
+	config        interfaces.AppConfig
+	eventManager  interfaces.EventManager
+	bindingCache  []string
+	enableConsole bool
 }
 
 // NewWebView returns a new WebView struct
@@ -103,6 +104,11 @@ 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)
@@ -172,6 +178,13 @@ 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)
+	}
+
 	// Runtime assets
 	wailsRuntime := mewn.String("../../runtime/assets/wails.js")
 	w.evalJS(wailsRuntime)

lib/renderer/webview/webview.go

@@ -1,6 +1,5 @@
-// Package wails implements Go bindings to https://github.com/zserge/webview C library.
+// 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.
@@ -14,7 +13,7 @@ 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
+#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

lib/renderer/webview/webview.h

@@ -1038,7 +1038,7 @@ struct webview_priv
     return S_FALSE;
   }
 
-  static const TCHAR *classname = "WebView";
+  static const TCHAR *classname = TEXT("WebView");
   static const SAFEARRAYBOUND ArrayBound = {1, 0};
 
   static IOleClientSiteVtbl MyIOleClientSiteTable = {
@@ -1227,7 +1227,7 @@ struct webview_priv
       }
       VariantInit(&myURL);
       myURL.vt = VT_BSTR;
-#ifndef UNICODE
+// #ifndef UNICODE
       {
         wchar_t *buffer = webview_to_utf16(webPageName);
         if (buffer == NULL)
@@ -1237,9 +1237,9 @@ struct webview_priv
         myURL.bstrVal = SysAllocString(buffer);
         GlobalFree(buffer);
       }
-#else
-      myURL.bstrVal = SysAllocString(webPageName);
-#endif
+// #else
+//       myURL.bstrVal = SysAllocString(webPageName);
+// #endif
       if (!myURL.bstrVal)
       {
       badalloc:
@@ -1277,7 +1277,7 @@ struct webview_priv
             if (!SafeArrayAccessData(sfArray, (void **)&pVar))
             {
               pVar->vt = VT_BSTR;
-#ifndef UNICODE
+// #ifndef UNICODE
               {
                 wchar_t *buffer = webview_to_utf16(url);
                 if (buffer == NULL)
@@ -1287,9 +1287,9 @@ struct webview_priv
                 bstr = SysAllocString(buffer);
                 GlobalFree(buffer);
               }
-#else
-              bstr = SysAllocString(string);
-#endif
+// #else
+//               bstr = SysAllocString(url);
+// #endif
               if ((pVar->bstrVal = bstr))
               {
                 htmlDoc2->lpVtbl->write(htmlDoc2, sfArray);
@@ -1404,6 +1404,7 @@ struct webview_priv
     {
       return -1;
     }
+
     ZeroMemory(&wc, sizeof(WNDCLASSEX));
     wc.cbSize = sizeof(WNDCLASSEX);
     wc.hInstance = hInstance;
@@ -1431,10 +1432,24 @@ struct webview_priv
     rect.bottom = rect.bottom - rect.top + top;
     rect.top = top;
 
+#ifdef UNICODE
+    wchar_t *u16title = webview_to_utf16(w->title);
+    if (u16title == NULL)
+    {
+      return -1;
+    }
+
     w->priv.hwnd =
+        CreateWindowEx(0, classname, u16title, style, rect.left, rect.top,
+                       rect.right - rect.left, rect.bottom - rect.top,
+                       HWND_DESKTOP, NULL, hInstance, (void *)w);
+#else
+  w->priv.hwnd =
         CreateWindowEx(0, classname, w->title, style, rect.left, rect.top,
                        rect.right - rect.left, rect.bottom - rect.top,
                        HWND_DESKTOP, NULL, hInstance, (void *)w);
+#endif
+    
     if (w->priv.hwnd == 0)
     {
       OleUninitialize();
@@ -1445,7 +1460,14 @@ struct webview_priv
 
     DisplayHTMLPage(w);
 
+#ifdef UNICODE
+    SetWindowText(w->priv.hwnd, u16title);
+    GlobalFree(u16title);
+#else
     SetWindowText(w->priv.hwnd, w->title);
+#endif
+    
+    
     ShowWindow(w->priv.hwnd, SW_SHOWDEFAULT);
     UpdateWindow(w->priv.hwnd);
     SetFocus(w->priv.hwnd);
@@ -1581,9 +1603,20 @@ struct webview_priv
 
   WEBVIEW_API void webview_set_title(struct webview *w, const char *title)
   {
+  #ifdef UNICODE
+    wchar_t *u16title = webview_to_utf16(title);
+    if (u16title == NULL)
+    {
+      return;
+    }
+    SetWindowText(w->priv.hwnd, u16title);
+    GlobalFree(u16title);
+  #else
     SetWindowText(w->priv.hwnd, title);
+  #endif
   }
 
+
   WEBVIEW_API void webview_set_fullscreen(struct webview *w, int fullscreen)
   {
     if (w->priv.is_fullscreen == !!fullscreen)

runtime/assets/bridge.js

@@ -95,13 +95,6 @@ function startBridge() {
 		window.wailsbridge.reconnectOverlay.style.display = 'none';
 	}
 
-	// Bridge external.invoke
-	window.external = {
-		invoke: function (msg) {
-			window.wailsbridge.websocket.send(msg);
-		}
-	};
-
 	// Adds a script to the Dom.
 	// Removes it if second parameter is true.
 	function addScript(script, remove) {
@@ -214,4 +207,4 @@ function Init(callback) {
 	start(callback);
 }
 
-module.exports = Init;
+module.exports = Init;

runtime/assets/console.js

@@ -0,0 +1,175 @@
+(function () {
+
+    window.wailsconsole = {};
+
+    var debugconsole = document.createElement("div");
+    var header = document.createElement("div");
+    var consoleOut = document.createElement("div");
+
+
+    document.addEventListener('keyup', logKey);
+
+    debugconsole.id = "wailsdebug";
+    debugconsole.style.fontSize = "18px";
+    debugconsole.style.width = "100%";
+    debugconsole.style.height = "35%";
+    debugconsole.style.maxHeight = "35%";
+    debugconsole.style.position = "fixed";
+    debugconsole.style.left = "0px";
+    debugconsole.style.backgroundColor = "rgba(255,255,255,0.8)";
+    debugconsole.style.borderTop = '1px solid black';
+    debugconsole.style.color = "black";
+    debugconsole.style.display = "none";
+
+    header.style.width = "100%";
+    header.style.height = "30px";
+    header.style.display = "block";
+    // header.style.paddingTop = "3px";
+    header.style.verticalAlign = "middle";
+    header.style.paddingLeft = "10px";
+    header.style.background = "rgba(255,255,255,0.8)";
+    header.innerHTML = "  <span style='vertical-align: middle'> Wails Console > <input id='conin' style='border: solid 1px black; width: 50%'></input><span style='padding-left: 5px; cursor:pointer;' onclick='window.wailsconsole.clearConsole()'>Clear</span></span>";
+
+    consoleOut.style.position = "absolute";
+    consoleOut.style.width = "100%";
+    consoleOut.style.height = "auto";
+    consoleOut.style.top = "30px";
+    // consoleOut.style.paddingLeft = "10px";
+    consoleOut.style.bottom = "0px";
+    consoleOut.style.backgroundColor = "rgba(200,200,200,1)";
+    consoleOut.style.overflowY = "scroll";
+    consoleOut.style.msOverflowStyle = "-ms-autohiding-scrollbar";
+
+    debugconsole.appendChild(header);
+    debugconsole.appendChild(consoleOut);
+    document.body.appendChild(debugconsole);
+    console.log(debugconsole.style.display)
+
+    function logKey(e) {
+        var conin = document.getElementById('conin');
+        if (e.which == 27 && e.shiftKey) {
+            toggleConsole(conin);
+        }
+        if (e.which == 13 && consoleVisible()) {
+            var command = conin.value.trim();
+            if (command.length > 0) {
+                console.log("> " + command)
+                try {
+                    evaluateInput(command);
+                } catch (e) {
+                    console.error(e.message);
+                }
+                conin.value = "";
+            }
+        }
+    };
+
+
+    function consoleVisible() {
+        return debugconsole.style.display == "block";
+    }
+
+    function toggleConsole(conin) {
+        var display = "none"
+        if (debugconsole.style.display == "none") display = "block";
+        debugconsole.style.display = display;
+        if (display == "block") {
+            conin.focus();
+        }
+    }
+
+    function evaluateExpression(expression) {
+
+        var pathSegments = [].concat(expression.split('.'));
+        if (pathSegments[0] == 'window') {
+            pathSegments.shift()
+        }
+        var currentObject = window;
+        for (var i = 0; i < pathSegments.length; i++) {
+            var pathSegment = pathSegments[i];
+            if (currentObject[pathSegment] == undefined) {
+                return false;
+            }
+            currentObject = currentObject[pathSegment];
+        }
+        console.log(JSON.stringify(currentObject));
+
+        return true;
+    }
+
+    function evaluateInput(command) {
+        try {
+            if (evaluateExpression(command)) {
+                return
+            } else {
+                eval(command);
+            }
+        } catch (e) {
+            console.error(e.message)
+        }
+    }
+
+
+    // Set us up as a listener
+    function hookIntoIPC() {
+        if (window.wails && window.wails._ && window.wails._.AddIPCListener) {
+            window.wails._.AddIPCListener(processIPCMessage);
+        } else {
+            setTimeout(hookIntoIPC, 100);
+        }
+    }
+    hookIntoIPC();
+
+    function processIPCMessage(message) {
+        console.log(message);
+        var parsedMessage;
+        try {
+            parsedMessage = JSON.parse(message);
+        } catch (e) {
+            console.error("Error in parsing IPC message: " + e.message);
+            return false;
+        }
+        var logmessage = "[IPC] "
+        switch (parsedMessage.type) {
+            case 'call':
+                logmessage += " Call: " + parsedMessage.payload.bindingName;
+                var params = "";
+                var parsedParams = JSON.parse(parsedMessage.payload.data);
+                if (parsedParams.length > 0) {
+                    params = parsedParams;
+                }
+                logmessage += "(" + params + ")";
+                break;
+            case 'log':
+                logmessage += "Log (" + parsedMessage.payload.level + "): " + parsedMessage.payload.message;
+                break;
+            default:
+                logmessage = message;
+        }
+        console.log(logmessage);
+    }
+
+    window.wailsconsole.clearConsole = function () {
+        consoleOut.innerHTML = "";
+    }
+
+    console.log = function (message) {
+        consoleOut.innerHTML = consoleOut.innerHTML + "<span style='padding-left: 5px'>" + message + '</span><br/>';
+        consoleOut.scrollTop = consoleOut.scrollHeight;
+
+    };
+    console.error = function (message) {
+        consoleOut.innerHTML = consoleOut.innerHTML + "<span style='color:red; padding-left: 5px'> Error: " + message + '</span><br/>';
+        consoleOut.scrollTop = consoleOut.scrollHeight;
+    };
+    // var h = document.getElementsByTagName("html")[0];
+    // console.log("html margin: " + h.style.marginLeft);
+    // console.log("html padding: " + h.style.paddingLeft);
+
+    // setInterval(function() { console.log("test");}, 1000);
+    // setInterval(function() { console.error("oops");}, 3000);
+    // var script = document.createElement('script'); 
+    // script.src = "https://cdnjs.cloudflare.com/ajax/libs/firebug-lite/1.4.0/firebug-lite.js#startOpened=true"; 
+    // document.body.appendChild(script); 
+
+})();

runtime/js/.eslintrc

@@ -15,10 +15,7 @@
             "error",
             "tab"
         ],
-        "linebreak-style": [
-            "error",
-            "unix"
-        ],
+        "linebreak-style": 0,
         "quotes": [
             "error",
             "single"
@@ -28,4 +25,4 @@
             "always"
         ]
     }
-}
+}

runtime/js/core/ipc.js

@@ -9,13 +9,35 @@ The lightweight framework for web-like apps
 */
 /* jshint esversion: 6 */
 
+// IPC Listeners
+var listeners = [];
+
+/**
+ * Adds a listener to IPC messages
+ * @param {function} callback 
+ */
+export function AddIPCListener(callback) {
+	listeners.push(callback);
+}
+
 /**
  * Invoke sends the given message to the backend
  *
  * @param {string} message
  */
 function Invoke(message) {
-	window.external.invoke(message);
+	if (window.wailsbridge) {
+		window.wailsbridge.websocket.send(message);
+	} else {
+		window.external.invoke(message);
+	}
+
+	// Also send to listeners
+	if (listeners.length > 0) {
+		for (var i = 0; i < listeners.length; i++) {
+			listeners[i](message);
+		}
+	}
 }
 
 /**

runtime/js/core/main.js

@@ -14,6 +14,7 @@ import { On, OnMultiple, Emit, Notify, Heartbeat, Acknowledge } from './events';
 import { NewBinding } from './bindings';
 import { Callback } from './calls';
 import { AddScript, InjectCSS } from './utils';
+import { AddIPCListener } from './ipc';
 
 // Initialise global if not already
 window.wails = window.wails || {};
@@ -27,6 +28,7 @@ var internal = {
 	AddScript,
 	InjectCSS,
 	Init,
+	AddIPCListener,
 };
 
 // Setup runtime structure
@@ -46,6 +48,16 @@ var runtime = {
 // Augment global
 Object.assign(window.wails, runtime);
 
+// Setup global error handler
+window.onerror = function (msg, url, lineNo, columnNo, error) {
+	window.wails.Log.Error('**** Caught Unhandled Error ****');
+	window.wails.Log.Error('Message: ' + msg);
+	window.wails.Log.Error('URL: ' + url);
+	window.wails.Log.Error('Line No: ' + lineNo);
+	window.wails.Log.Error('Column No: ' + columnNo);
+	window.wails.Log.Error('error: ' + error);
+};
+
 // Emit loaded event
 Emit('wails:loaded');
 

runtime/js/runtime/browser.js

@@ -32,6 +32,6 @@ function OpenFile(filename) {
 }
 
 module.exports = {
-	OpenURL,
-	OpenFile
+	OpenURL: OpenURL,
+	OpenFile: OpenFile
 };

runtime/js/runtime/events.js

@@ -80,10 +80,10 @@ function Acknowledge(eventName) {
 }
 
 module.exports = {
-	OnMultiple,
-	On,
-	Once,
-	Emit,
-	Heartbeat,
-	Acknowledge
+	OnMultiple: OnMultiple,
+	On: On,
+	Once: Once,
+	Emit: Emit,
+	Heartbeat: Heartbeat,
+	Acknowledge: Acknowledge
 };

runtime/js/runtime/log.js

@@ -62,9 +62,9 @@ function Fatal(message) {
 }
 
 module.exports = {
-	Debug,
-	Info,
-	Warning,
-	Error,
-	Fatal
+	Debug: Debug,
+	Info: Info,
+	Warning: Warning,
+	Error: Error,
+	Fatal: Fatal
 };

runtime/js/runtime/main.js

@@ -15,8 +15,8 @@ const Events = require('./events');
 const Init = require('./init');
 
 module.exports = {
-	Log,
-	Browser,
-	Events,
-	Init
+	Log: Log,
+	Browser: Browser,
+	Events: Events,
+	Init: Init
 };

runtime/js/runtime/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@wailsapp/runtime",
-  "version": "1.0.6",
+  "version": "1.0.9",
   "description": "Wails Javascript runtime library",
   "main": "main.js",
   "types": "runtime.d.ts",

scripts/build.go

@@ -0,0 +1,85 @@
+package main
+
+import (
+	"fmt"
+	"log"
+	"os"
+	"os/exec"
+	"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()
+	fmt.Println(string(output))
+	if err != nil {
+		log.Println(string(output))
+		log.Fatal(err)
+	}
+	cmd.Run()
+	fmt.Println(string(output))
+}
+
+// A build step that requires additional params, or platform specific steps for example
+func main() {
+
+	dir, _ := os.Getwd()
+
+	// Build Runtime
+	fmt.Println("**** Building Runtime ****")
+	runtimeDir, _ := filepath.Abs(filepath.Join(dir, "..", "runtime", "js"))
+	os.Chdir(runtimeDir)
+	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)
+	runCommand("go", "install")
+
+	baseDir, _ := filepath.Abs(filepath.Join(dir, ".."))
+	os.Chdir(baseDir)
+	runCommand("go", "mod", "tidy")
+}