v2.0.0-alpha.26

runtime/js/runtime/.npmignore

@@ -1 +1 @@
-bridge.js
+index.js

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

@@ -105,7 +105,7 @@ func AddSubcommand(app *clir.Cli, w io.Writer) error {
 				}
 
 				if !rebuild {
-					logger.Println("Filename change: %s did not match extension list %s", event.Name, extensions)
+					logger.Println("Filename change: %s did not match extension list (%s)", event.Name, extensions)
 					return
 				}
 

v2/cmd/wails/version.go

@@ -1,3 +1,3 @@
 package main
 
-var version = "v2.0.0-alpha.22"
+var version = "v2.0.0-alpha.26"

v2/go.mod

@@ -1,6 +1,6 @@
 module github.com/wailsapp/wails/v2
 
-go 1.15
+go 1.16
 
 require (
 	github.com/Masterminds/semver v1.5.0
@@ -15,7 +15,6 @@ require (
 	github.com/leaanthony/slicer v1.5.0
 	github.com/matryer/is v1.4.0
 	github.com/nfnt/resize v0.0.0-20180221191011-83c6a9932646 // indirect
-	github.com/niemeyer/pretty v0.0.0-20200227124842-a10e7caefd8e // indirect
 	github.com/olekukonko/tablewriter v0.0.4
 	github.com/pkg/errors v0.9.1
 	github.com/tdewolff/minify v2.3.6+incompatible
@@ -23,8 +22,8 @@ require (
 	github.com/tdewolff/test v1.0.6 // indirect
 	github.com/xyproto/xpm v1.2.1
 	golang.org/x/net v0.0.0-20200822124328-c89045814202
+	golang.org/x/sync v0.0.0-20201207232520-09787c993a3a
 	golang.org/x/sys v0.0.0-20200724161237-0e2f3a69832c
 	golang.org/x/tools v0.0.0-20200902012652-d1954cc86c82
-	gopkg.in/check.v1 v1.0.0-20200902074654-038fdea0a05b // indirect
 	nhooyr.io/websocket v1.8.6
 )

v2/go.sum

@@ -11,7 +11,6 @@ github.com/gin-contrib/sse v0.1.0 h1:Y/yl/+YNO8GZSjAhjMsSuLt29uWRFHdHYUb5lYOV9qE
 github.com/gin-contrib/sse v0.1.0/go.mod h1:RHrZQHXnP2xjPF+u1gW/2HnVO7nvIa9PG3Gm+fLHvGI=
 github.com/gin-gonic/gin v1.6.3 h1:ahKqKTFpO5KTPHxWZjEdPScmYaGtLo8Y4DMHoEsnp14=
 github.com/gin-gonic/gin v1.6.3/go.mod h1:75u5sXoLsGZoRN5Sgbi1eraJ4GU3++wFwWzhwvtwp4M=
-github.com/go-playground/assert/v2 v2.0.1 h1:MsBgLAaY856+nPRTKrp3/OZK38U/wa0CcBYNjji3q3A=
 github.com/go-playground/assert/v2 v2.0.1/go.mod h1:VDjEfimB/XKnb+ZQfWdccd7VUvScMdVu0Titje2rxJ4=
 github.com/go-playground/locales v0.13.0 h1:HyWk6mgj5qFqCT5fjGBuRArbVDfE4hi8+e8ceBS/t7Q=
 github.com/go-playground/locales v0.13.0/go.mod h1:taPMhCMXrRLJO55olJkUXHZBHCxTMfnGwq/HNwmWNS8=
@@ -41,9 +40,6 @@ github.com/json-iterator/go v1.1.9 h1:9yzud/Ht36ygwatGx56VwCZtlI/2AD15T1X2sjSuGn
 github.com/json-iterator/go v1.1.9/go.mod h1:KdQUCv79m/52Kvf8AW2vK1V8akMuk1QjK/uOdHXbAo4=
 github.com/klauspost/compress v1.10.3 h1:OP96hzwJVBIHYU52pVTI6CczrxPvrGfgqF9N5eTO0Q8=
 github.com/klauspost/compress v1.10.3/go.mod h1:aoV0uJVorq1K+umq18yTdKaF57EivdYsUV+/s2qKfXs=
-github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=
-github.com/kr/text v0.1.0 h1:45sCR5RtlFHMR4UwH9sdQ5TC8v0qDQCHnXt+kaKSTVE=
-github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI=
 github.com/leaanthony/clir v1.0.4 h1:Dov2y9zWJmZr7CjaCe86lKa4b5CSxskGAt2yBkoDyiU=
 github.com/leaanthony/clir v1.0.4/go.mod h1:k/RBkdkFl18xkkACMCLt09bhiZnrGORoxmomeMvDpE0=
 github.com/leaanthony/gosod v0.0.4 h1:v4hepo4IyL8E8c9qzDsvYcA0KGh7Npf8As74K5ibQpI=
@@ -64,17 +60,13 @@ github.com/modern-go/reflect2 v0.0.0-20180701023420-4b7aa43c6742 h1:Esafd1046DLD
 github.com/modern-go/reflect2 v0.0.0-20180701023420-4b7aa43c6742/go.mod h1:bx2lNnkwVCuqBIxFjflWJWanXIb3RllmbCylyMrvgv0=
 github.com/nfnt/resize v0.0.0-20180221191011-83c6a9932646 h1:zYyBkD/k9seD2A7fsi6Oo2LfFZAehjjQMERAvZLEDnQ=
 github.com/nfnt/resize v0.0.0-20180221191011-83c6a9932646/go.mod h1:jpp1/29i3P1S/RLdc7JQKbRpFeM1dOBd8T9ki5s+AY8=
-github.com/niemeyer/pretty v0.0.0-20200227124842-a10e7caefd8e h1:fD57ERR4JtEqsWbfPhv4DMiApHyliiK5xCTNVSPiaAs=
-github.com/niemeyer/pretty v0.0.0-20200227124842-a10e7caefd8e/go.mod h1:zD1mROLANZcx1PVRCS0qkT7pwLkGfwJo4zjcN/Tysno=
 github.com/olekukonko/tablewriter v0.0.4 h1:vHD/YYe1Wolo78koG299f7V/VAS08c6IpCLn+Ejf/w8=
 github.com/olekukonko/tablewriter v0.0.4/go.mod h1:zq6QwlOf5SlnkVbMSr5EoBv3636FWnp+qbPhuoO21uA=
 github.com/pkg/errors v0.9.1 h1:FEBLx1zS214owpjy7qsBeixbURkuhQAwrK5UwLGTwt4=
 github.com/pkg/errors v0.9.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
-github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
 github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
-github.com/stretchr/testify v1.4.0 h1:2E4SXV/wtOkTonXsotYi4li6zVWxYlZuYNCXe9XRJyk=
 github.com/stretchr/testify v1.4.0/go.mod h1:j7eGeouHqKxXV5pUuKE4zz7dFj8WfuZ+81PSLYec5m4=
 github.com/tdewolff/minify v2.3.6+incompatible h1:2hw5/9ZvxhWLvBUnHE06gElGYz+Jv9R4Eys0XUzItYo=
 github.com/tdewolff/minify v2.3.6+incompatible/go.mod h1:9Ov578KJUmAWpS6NeZwRZyT56Uf6o3Mcz9CEsg8USYs=
@@ -100,35 +92,29 @@ golang.org/x/net v0.0.0-20200822124328-c89045814202 h1:VvcQYSHwXgi7W+TpUR6A9g6Up
 golang.org/x/net v0.0.0-20200822124328-c89045814202/go.mod h1:/O7V0waA8r7cgGh81Ro3o1hOxt32SMVPicZroKQ2sZA=
 golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20200625203802-6e8e738ad208/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sync v0.0.0-20201207232520-09787c993a3a h1:DcqTD9SDLc+1P/r1EmRBwnVsrOwW+kk2vWf9n+1sGhs=
+golang.org/x/sync v0.0.0-20201207232520-09787c993a3a/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20190412213103-97732733099d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20191005200804-aed5e4c7ecf9 h1:L2auWcuQIvxz9xSEqzESnV/QN/gNRXNApHi3fYwl2w0=
 golang.org/x/sys v0.0.0-20191005200804-aed5e4c7ecf9/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20200116001909-b77594299b42/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20200323222414-85ca7c5b95cd h1:xhmwyvizuTgC2qz7ZlMluP20uW+C3Rm0FD/WLDX8884=
 golang.org/x/sys v0.0.0-20200323222414-85ca7c5b95cd/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20200724161237-0e2f3a69832c h1:UIcGWL6/wpCfyGuJnRFJRurA+yj8RrW7Q6x2YMCXt6c=
 golang.org/x/sys v0.0.0-20200724161237-0e2f3a69832c/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.2/go.mod h1:bEr9sfX3Q8Zfm5fL9x+3itogRgK3+ptLWKqgva+5dAk=
 golang.org/x/time v0.0.0-20191024005414-555d28b269f0/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
-golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e h1:FDhOuMEY4JVRztM/gsbk+IKUQ8kj74bxZrgw87eMMVc=
 golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
 golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
 golang.org/x/tools v0.0.0-20200902012652-d1954cc86c82 h1:shxDsb9Dz27xzk3A0DxP0JuJnZMpKrdg8+E14eiUAX4=
 golang.org/x/tools v0.0.0-20200902012652-d1954cc86c82/go.mod h1:Cj7w3i3Rnn0Xh82ur9kSqwfTHTeVxaDqrfMjpcNT6bE=
 golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
-golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543 h1:E7g+9GITq07hpfrRu66IVDexMakfv52eLZ2CXBWiKr4=
 golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1 h1:go1bK/D/BFZV2I8cIQd1NKEZ+0owSTG1fDTci4IqFcE=
 golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
-gopkg.in/check.v1 v1.0.0-20200902074654-038fdea0a05b h1:QRR6H1YWRnHb4Y/HeNFCTJLFVxaq6wH4YuVdsUOr75U=
-gopkg.in/check.v1 v1.0.0-20200902074654-038fdea0a05b/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
-gopkg.in/yaml.v2 v2.2.2 h1:ZCJp+EgiOT7lHqUV2J862kp8Qj64Jo6az82+3Td9dZw=
 gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
-gopkg.in/yaml.v2 v2.2.8 h1:obN1ZagJSUGI0Ek/LBmuj4SNLPfIny3KsKFopxRdj10=
 gopkg.in/yaml.v2 v2.2.8/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.3.0 h1:clyUAQHOM3G0M3f5vQj7LuJrETvjVot3Z5el9nffUtU=
 gopkg.in/yaml.v2 v2.3.0/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=

v2/internal/app/dev.go

@@ -97,6 +97,7 @@ func CreateApp(appoptions *options.App) (*App, error) {
 		startupCallback:  appoptions.Startup,
 		shutdownCallback: appoptions.Shutdown,
 		bridge:           bridge.NewBridge(myLogger),
+		menuManager:      menuManager,
 	}
 
 	result.options = appoptions
@@ -208,6 +209,9 @@ func (a *App) Run() error {
 		return err
 	}
 
+	// Generate backend.js
+	a.bindings.GenerateBackendJS()
+
 	err = a.bridge.Run(dispatcher, bindingDump, a.debug)
 	a.logger.Trace("Bridge.Run() exited")
 	if err != nil {

v2/internal/binding/assets/package.json

@@ -0,0 +1,11 @@
+{
+  "name": "backend",
+  "version": "1.0.0",
+  "description": "Package to wrap backend method calls",
+  "main": "index.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "author": "",
+  "license": "ISC"
+}

v2/internal/binding/generate.go

@@ -0,0 +1,150 @@
+package binding
+
+import (
+	"bytes"
+	_ "embed"
+	"fmt"
+	"log"
+	"os"
+	"path/filepath"
+	"strings"
+
+	"github.com/wailsapp/wails/v2/internal/fs"
+
+	"github.com/leaanthony/slicer"
+)
+
+const _comment = `
+
+const backend = {
+        main: {
+            "xbarApp": {
+                "GetCategories": () => {
+                    window.backend.main.xbarApp.GetCategories.call(arguments);
+                },
+
+                /**
+                 * @param {string} arg1
+                 */
+                "InstallPlugin": (arg1) => {
+                    window.backend.main.xbarApp.InstallPlugin.call(arguments);
+                },
+                "GetPlugins": () => {
+                    window.backend.main.xbarApp.GetPlugins.call(arguments);
+                }
+            }
+        }
+}
+
+export default backend;`
+
+//go:embed assets/package.json
+var packageJSON []byte
+
+func (b *Bindings) GenerateBackendJS() {
+
+	store := b.db.store
+	var output bytes.Buffer
+
+	output.WriteString(`// @ts-check
+// Cynhyrchwyd y ffeil hon yn awtomatig. PEIDIWCH Â MODIWL
+// This file is automatically generated. DO NOT EDIT
+
+const backend = {`)
+	output.WriteString("\n")
+
+	for packageName, packages := range store {
+		output.WriteString(fmt.Sprintf("  \"%s\": {", packageName))
+		output.WriteString("\n")
+		for structName, structs := range packages {
+			output.WriteString(fmt.Sprintf("    \"%s\": {", structName))
+			output.WriteString("\n")
+			for methodName, methodDetails := range structs {
+				output.WriteString("      /**\n")
+				output.WriteString("       * " + methodName + "\n")
+				var args slicer.StringSlicer
+				for count, input := range methodDetails.Inputs {
+					arg := fmt.Sprintf("arg%d", count+1)
+					args.Add(arg)
+					output.WriteString(fmt.Sprintf("       * @param {%s} %s - Go Type: %s\n", goTypeToJSDocType(input.TypeName), arg, input.TypeName))
+				}
+				returnType := "Promise"
+				returnTypeDetails := ""
+				if methodDetails.OutputCount() > 0 {
+					firstType := goTypeToJSDocType(methodDetails.Outputs[0].TypeName)
+					returnType += "<" + firstType
+					if methodDetails.OutputCount() == 2 {
+						secondType := goTypeToJSDocType(methodDetails.Outputs[1].TypeName)
+						returnType += "|" + secondType
+					}
+					returnType += ">"
+					returnTypeDetails = " - Go Type: " + methodDetails.Outputs[0].TypeName
+				}
+				output.WriteString("       * @returns {" + returnType + "} " + returnTypeDetails + "\n")
+				output.WriteString("       */\n")
+				argsString := args.Join(", ")
+				output.WriteString(fmt.Sprintf("      \"%s\": (%s) => {", methodName, argsString))
+				output.WriteString("\n")
+				output.WriteString(fmt.Sprintf("        return window.backend.%s.%s.%s(%s);", packageName, structName, methodName, argsString))
+				output.WriteString("\n")
+				output.WriteString(fmt.Sprintf("      },"))
+				output.WriteString("\n")
+			}
+			output.WriteString(fmt.Sprintf("    }"))
+			output.WriteString("\n")
+		}
+		output.WriteString(fmt.Sprintf("  }\n"))
+		output.WriteString("\n")
+	}
+
+	output.WriteString(`};
+export default backend;`)
+	output.WriteString("\n")
+
+	dirname, err := fs.RelativeToCwd("frontend/src/backend")
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	if !fs.DirExists(dirname) {
+		err := fs.Mkdir(dirname)
+		if err != nil {
+			log.Fatal(err)
+		}
+	}
+
+	packageJsonFile := filepath.Join(dirname, "package.json")
+	if !fs.FileExists(packageJsonFile) {
+		err := os.WriteFile(packageJsonFile, packageJSON, 0755)
+		if err != nil {
+			log.Fatal(err)
+		}
+	}
+
+	filename := filepath.Join(dirname, "index.js")
+	err = os.WriteFile(filename, output.Bytes(), 0755)
+	if err != nil {
+		log.Fatal(err)
+	}
+}
+
+func goTypeToJSDocType(input string) string {
+	switch true {
+	case input == "string":
+		return "string"
+	case input == "error":
+		return "Error"
+	case
+		strings.HasPrefix(input, "int"),
+		strings.HasPrefix(input, "uint"),
+		strings.HasPrefix(input, "float"):
+		return "number"
+	case input == "bool":
+		return "boolean"
+	case strings.HasPrefix(input, "[]"):
+		arrayType := goTypeToJSDocType(input[2:])
+		return "Array.<" + arrayType + ">"
+	default:
+		return "any"
+	}
+}

v2/internal/bridge/bridge.go

@@ -85,7 +85,7 @@ func (b *Bridge) startSession(conn *websocket.Conn) {
 	// Setup the close handler
 	conn.SetCloseHandler(func(int, string) error {
 		b.myLogger.Info("Connection dropped [%s].", s.Identifier())
-
+		b.dispatcher.RemoveClient(s.client)
 		b.mu.Lock()
 		delete(b.sessions, s.Identifier())
 		b.mu.Unlock()

v2/internal/bridge/client.go

@@ -1,11 +1,19 @@
 package bridge
 
 import (
+	"fmt"
+	"os/exec"
+	"strconv"
+	"strings"
+
+	"github.com/leaanthony/slicer"
 	"github.com/wailsapp/wails/v2/pkg/options/dialog"
+	"golang.org/x/sync/semaphore"
 )
 
 type BridgeClient struct {
-	session *session
+	session         *session
+	dialogSemaphore *semaphore.Weighted
 }
 
 func (b BridgeClient) Quit() {
@@ -31,7 +39,36 @@ func (b BridgeClient) SaveDialog(dialogOptions *dialog.SaveDialog, callbackID st
 }
 
 func (b BridgeClient) MessageDialog(dialogOptions *dialog.MessageDialog, callbackID string) {
-	b.session.log.Info("MessageDialog unsupported in Bridge mode")
+
+	osa, err := exec.LookPath("osascript")
+	if err != nil {
+		b.session.log.Info("MessageDialog unavailable (osascript not found)")
+		return
+	}
+
+	var btns slicer.StringSlicer
+	defaultButton := ""
+	for index, btn := range dialogOptions.Buttons {
+		btns.Add(strconv.Quote(btn))
+		if btn == dialogOptions.DefaultButton {
+			defaultButton = fmt.Sprintf("default button %d", index+1)
+		}
+	}
+	buttons := "{" + btns.Join(",") + "}"
+	script := fmt.Sprintf("display dialog \"%s\" buttons %s %s with title \"%s\"", dialogOptions.Message, buttons, defaultButton, dialogOptions.Title)
+
+	b.session.log.Info("OSASCRIPT: %s", script)
+	go func() {
+		out, err := exec.Command(osa, "-e", script).Output()
+		if err != nil {
+			b.session.log.Error(err.Error())
+			return
+		}
+
+		b.session.log.Info(string(out))
+		buttonPressed := strings.TrimSpace(strings.TrimPrefix(string(out), "button returned:"))
+		b.session.client.DispatchMessage("DM" + callbackID + "|" + buttonPressed)
+	}()
 }
 
 func (b BridgeClient) WindowSetTitle(title string) {
@@ -103,11 +140,11 @@ func (b BridgeClient) SetApplicationMenu(menuJSON string) {
 }
 
 func (b BridgeClient) SetTrayMenu(trayMenuJSON string) {
-	b.session.log.Info("SetTrayMenu unsupported in Bridge mode")
+	b.session.sendMessage("TS" + trayMenuJSON)
 }
 
-func (b BridgeClient) UpdateTrayMenuLabel(JSON string) {
-	b.session.log.Info("UpdateTrayMenuLabel unsupported in Bridge mode")
+func (b BridgeClient) UpdateTrayMenuLabel(trayMenuJSON string) {
+	b.session.sendMessage("TS" + trayMenuJSON)
 }
 
 func (b BridgeClient) UpdateContextMenu(contextMenuJSON string) {

v2/internal/bridge/session.go

@@ -95,7 +95,8 @@ func (s *session) start(firstSession bool) {
 		}
 		if err != nil {
 			s.log.Error("Error reading message: %v", err)
-			continue
+			err = s.conn.Close()
+			return
 		}
 
 		message := string(buffer)

v2/internal/ffenestri/ffenestri_darwin.c

@@ -785,7 +785,7 @@ extern void MessageDialog(struct Application *app, char *callbackID, char *type,
 	        buttonPressed = button4;
 	    }
 
-        // Construct callback message. Format "DS<callbackID>|<selected button index>"
+        // Construct callback message. Format "DM<callbackID>|<selected button index>"
         const char *callback = concat("DM", callbackID);
         const char *header = concat(callback, "|");
         const char *responseMessage = concat(header, buttonPressed);

v2/internal/messagedispatcher/message/dialog.go

@@ -27,7 +27,7 @@ func dialogMessageParser(message string) (*parsedMessage, error) {
 		if idx < 0 {
 			return nil, fmt.Errorf("Invalid dialog response message format: %+v", message)
 		}
-		callbackID := message[:idx+1]
+		callbackID := message[:idx]
 		payloadData := message[idx+1:]
 
 		switch dialogType {

v2/internal/runtime/js/runtime/.npmignore

@@ -0,0 +1 @@
+src

v2/internal/runtime/js/runtime/init.js

@@ -9,7 +9,7 @@ The lightweight framework for web-like apps
 */
 /* jshint esversion: 6 */
 
-import { InitBridge } from './bridge';
+import bridge from './bridge';
 
 /**
  * ready will execute the callback when Wails has loaded
@@ -25,7 +25,7 @@ function ready(callback) {
 	}
 
 	// If not we need to setup the bridge
-	InitBridge(callback);
+	bridge.InitBridge(callback);
 }
 
 module.exports = {

v2/internal/runtime/js/runtime/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@wails/runtime",
-  "version": "1.3.7",
+  "version": "1.3.9",
   "description": "Wails V2 Javascript runtime library",
   "main": "main.js",
   "types": "runtime.d.ts",

v2/internal/runtime/js/runtime/src/Menu.svelte

@@ -0,0 +1,18 @@
+<script>
+
+    export let menu;
+
+</script>
+
+<div class="menu">
+    {#each menu.Menu.Items as menuItem}
+        {#if menuItem.Image.length > 0}
+            <img alt="" src="data:image/png;base64,{menuItem.Image}"/>
+        {/if}
+    <span class="menuitem">{menuItem.Label}</span>
+    {/each}
+</div>
+
+<style>
+
+</style>

v2/internal/runtime/js/runtime/src/Menubar.svelte

@@ -0,0 +1,37 @@
+<script>
+
+    import {menuVisible} from './store'
+    import {fade} from 'svelte/transition';
+
+    import {trays} from './store'
+    import TrayMenu from "./TrayMenu.svelte";
+
+</script>
+
+{#if $menuVisible }
+    <div class="wails-menubar" transition:fade>
+    <span class="tray-menus">
+    {#each $trays as tray}
+        <TrayMenu {tray}></TrayMenu>
+    {/each}
+    </span>
+    </div>
+{/if}
+
+<style>
+
+    .tray-menus {
+        display: flex;
+        flex-direction: row;
+        justify-content: flex-end;
+    }
+    .wails-menubar { position: relative;
+        display: block;
+        top: 0;
+        height: 2rem;
+        width: 100%;
+        border-bottom: 1px solid #b3b3b3;
+        box-shadow: antiquewhite;
+        box-shadow: 0px 0px 10px 0px #33333360;
+    }
+</style>

v2/internal/runtime/js/runtime/src/Overlay.svelte

@@ -0,0 +1,55 @@
+<script>
+
+    import { overlayVisible } from './store'
+    import { fade,  } from 'svelte/transition';
+
+</script>
+
+{#if $overlayVisible }
+<div class="wails-reconnect-overlay" transition:fade="{{ duration: 200 }}">
+    <div class="wails-reconnect-overlay-content">
+        <div class="wails-reconnect-overlay-loadingspinner"></div>
+    </div>
+</div>
+{/if}
+
+<style>
+    .wails-reconnect-overlay {
+        position: fixed;
+        top: 0;
+        left: 0;
+        width: 100%;
+        height: 100%;
+        backdrop-filter: blur(20px) saturate(160%) contrast(45%) brightness(140%);
+        z-index: 999999
+    }
+
+    .wails-reconnect-overlay-content {
+        position: relative;
+        top: 50%;
+        transform: translateY(-50%);
+        margin: 0;
+        background-image: url(data:image/png;base64,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);
+        background-repeat: no-repeat;
+        background-position: center
+    }
+
+    .wails-reconnect-overlay-loadingspinner {
+        pointer-events: none;
+        width: 2.5em;
+        height: 2.5em;
+        border: .4em solid transparent;
+        border-color: #f00 #eee0 #f00 #eee0;
+        border-radius: 50%;
+        animation: loadingspin 1s linear infinite;
+        margin: auto;
+        padding: 2.5em
+    }
+
+    @keyframes loadingspin {
+        100% {
+            transform: rotate(360deg);
+        }
+    }
+
+</style>

v2/internal/runtime/js/runtime/src/TrayMenu.svelte

@@ -0,0 +1,21 @@
+<script>
+    import Menu from "./Menu.svelte";
+
+    export let tray;
+
+</script>
+
+<span class="tray-menu">
+    <span class="label">{tray.Label}</span>
+<!--    <Menu menu="{tray.ProcessedMenu}"/>-->
+</span>
+
+<style>
+
+    .tray-menu {
+        padding-left: 0.5rem;
+        padding-right: 0.5rem;
+        overflow: visible;
+        font-size: 14px;
+    }
+</style>

v2/internal/runtime/js/runtime/src/main.js

@@ -0,0 +1,45 @@
+/*
+ _       __      _ __
+| |     / /___ _(_) /____
+| | /| / / __ `/ / / ___/
+| |/ |/ / /_/ / / (__  )
+|__/|__/\__,_/_/_/____/
+The lightweight framework for web-like apps
+(c) Lea Anthony 2019-present
+*/
+/* jshint esversion: 6 */
+
+import Overlay from './Overlay.svelte';
+import MenuBar from './Menubar.svelte';
+import {showOverlay} from "./store";
+import {StartWebsocket} from "./websocket";
+
+let components = {};
+
+function setupMenuBar() {
+	components.menubar = new MenuBar({
+		target: document.body,
+	});
+}
+
+// Sets up the overlay
+function setupOverlay() {
+	components.overlay = new Overlay({
+		target: document.body,
+		anchor: document.querySelector('#wails-bridge'),
+	});
+}
+
+export function InitBridge(callback) {
+
+	setupMenuBar()
+
+	// Setup the overlay
+	setupOverlay();
+
+	// Start by showing the overlay...
+	showOverlay();
+
+	// ...and attempt to connect
+	StartWebsocket(callback);
+}

v2/internal/runtime/js/runtime/src/package-lock.json

@@ -0,0 +1,320 @@
+{
+  "name": "bridge",
+  "version": "1.0.0",
+  "lockfileVersion": 1,
+  "requires": true,
+  "dependencies": {
+    "@rollup/plugin-commonjs": {
+      "version": "17.1.0",
+      "resolved": "https://registry.npmjs.org/@rollup/plugin-commonjs/-/plugin-commonjs-17.1.0.tgz",
+      "integrity": "sha512-PoMdXCw0ZyvjpCMT5aV4nkL0QywxP29sODQsSGeDpr/oI49Qq9tRtAsb/LbYbDzFlOydVEqHmmZWFtXJEAX9ew==",
+      "dev": true,
+      "requires": {
+        "@rollup/pluginutils": "^3.1.0",
+        "commondir": "^1.0.1",
+        "estree-walker": "^2.0.1",
+        "glob": "^7.1.6",
+        "is-reference": "^1.2.1",
+        "magic-string": "^0.25.7",
+        "resolve": "^1.17.0"
+      },
+      "dependencies": {
+        "estree-walker": {
+          "version": "2.0.2",
+          "resolved": "https://registry.npmjs.org/estree-walker/-/estree-walker-2.0.2.tgz",
+          "integrity": "sha512-Rfkk/Mp/DL7JVje3u18FxFujQlTNR2q6QfMSMB7AvCBx91NGj/ba3kCfza0f6dVDbw7YlRf/nDrn7pQrCCyQ/w==",
+          "dev": true
+        }
+      }
+    },
+    "@rollup/plugin-node-resolve": {
+      "version": "11.1.1",
+      "resolved": "https://registry.npmjs.org/@rollup/plugin-node-resolve/-/plugin-node-resolve-11.1.1.tgz",
+      "integrity": "sha512-zlBXR4eRS+2m79TsUZWhsd0slrHUYdRx4JF+aVQm+MI0wsKdlpC2vlDVjmlGvtZY1vsefOT9w3JxvmWSBei+Lg==",
+      "dev": true,
+      "requires": {
+        "@rollup/pluginutils": "^3.1.0",
+        "@types/resolve": "1.17.1",
+        "builtin-modules": "^3.1.0",
+        "deepmerge": "^4.2.2",
+        "is-module": "^1.0.0",
+        "resolve": "^1.19.0"
+      }
+    },
+    "@rollup/pluginutils": {
+      "version": "3.1.0",
+      "resolved": "https://registry.npmjs.org/@rollup/pluginutils/-/pluginutils-3.1.0.tgz",
+      "integrity": "sha512-GksZ6pr6TpIjHm8h9lSQ8pi8BE9VeubNT0OMJ3B5uZJ8pz73NPiqOtCog/x2/QzM1ENChPKxMDhiQuRHsqc+lg==",
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+        "@types/estree": "0.0.39",
+        "estree-walker": "^1.0.1",
+        "picomatch": "^2.2.2"
+      }
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+      "version": "0.0.39",
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+    },
+    "@types/resolve": {
+      "version": "1.17.1",
+      "resolved": "https://registry.npmjs.org/@types/resolve/-/resolve-1.17.1.tgz",
+      "integrity": "sha512-yy7HuzQhj0dhGpD8RLXSZWEkLsV9ibvxvi6EiJ3bkqLAO1RGo0WbkWQiwpRlSFymTJRz0d3k5LM3kkx8ArDbLw==",
+      "dev": true,
+      "requires": {
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+      "resolved": "https://registry.npmjs.org/path-is-absolute/-/path-is-absolute-1.0.1.tgz",
+      "integrity": "sha1-F0uSaHNVNP+8es5r9TpanhtcX18=",
+      "dev": true
+    },
+    "path-parse": {
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+      "resolved": "https://registry.npmjs.org/path-parse/-/path-parse-1.0.6.tgz",
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+    },
+    "picomatch": {
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+      "resolved": "https://registry.npmjs.org/picomatch/-/picomatch-2.2.2.tgz",
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+    },
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+      "version": "0.8.7",
+      "resolved": "https://registry.npmjs.org/require-relative/-/require-relative-0.8.7.tgz",
+      "integrity": "sha1-eZlTn8ngR6N5KPoZb44VY9q9Nt4=",
+      "dev": true
+    },
+    "resolve": {
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+      "resolved": "https://registry.npmjs.org/resolve/-/resolve-1.19.0.tgz",
+      "integrity": "sha512-rArEXAgsBG4UgRGcynxWIWKFvh/XZCcS8UJdHhwy91zwAvCZIbcs+vAbflgBnNjYMs/i/i+/Ux6IZhML1yPvxg==",
+      "dev": true,
+      "requires": {
+        "is-core-module": "^2.1.0",
+        "path-parse": "^1.0.6"
+      }
+    },
+    "rollup": {
+      "version": "2.38.5",
+      "resolved": "https://registry.npmjs.org/rollup/-/rollup-2.38.5.tgz",
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+      "dev": true,
+      "requires": {
+        "fsevents": "~2.3.1"
+      }
+    },
+    "rollup-plugin-svelte": {
+      "version": "7.1.0",
+      "resolved": "https://registry.npmjs.org/rollup-plugin-svelte/-/rollup-plugin-svelte-7.1.0.tgz",
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+      "dev": true,
+      "requires": {
+        "require-relative": "^0.8.7",
+        "rollup-pluginutils": "^2.8.2"
+      }
+    },
+    "rollup-pluginutils": {
+      "version": "2.8.2",
+      "resolved": "https://registry.npmjs.org/rollup-pluginutils/-/rollup-pluginutils-2.8.2.tgz",
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+      "dev": true,
+      "requires": {
+        "estree-walker": "^0.6.1"
+      },
+      "dependencies": {
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+          "dev": true
+        }
+      }
+    },
+    "sourcemap-codec": {
+      "version": "1.4.8",
+      "resolved": "https://registry.npmjs.org/sourcemap-codec/-/sourcemap-codec-1.4.8.tgz",
+      "integrity": "sha512-9NykojV5Uih4lgo5So5dtw+f0JgJX30KCNI8gwhz2J9A15wD0Ml6tjHKwf6fTSa6fAdVBdZeNOs9eJ71qCk8vA==",
+      "dev": true
+    },
+    "svelte": {
+      "version": "3.32.2",
+      "resolved": "https://registry.npmjs.org/svelte/-/svelte-3.32.2.tgz",
+      "integrity": "sha512-Zxh1MQQl/+vnToKbU1Per+PoMN8Jb2MeKJcGxiOsCGR677hXw7jkMfbnNXq33+dxIzV/HfA4xtoSPJrqeB0VUg==",
+      "dev": true
+    },
+    "wrappy": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/wrappy/-/wrappy-1.0.2.tgz",
+      "integrity": "sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8=",
+      "dev": true
+    }
+  }
+}

v2/internal/runtime/js/runtime/src/package.json

@@ -0,0 +1,19 @@
+{
+  "name": "bridge",
+  "version": "1.0.0",
+  "description": "Wails bridge",
+  "main": "main.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1",
+    "build": "npx rollup -c"
+  },
+  "author": "",
+  "license": "ISC",
+  "devDependencies": {
+    "@rollup/plugin-commonjs": "^17.1.0",
+    "@rollup/plugin-node-resolve": "^11.1.1",
+    "rollup": "^2.38.5",
+    "rollup-plugin-svelte": "^7.1.0",
+    "svelte": "^3.32.2"
+  }
+}

v2/internal/runtime/js/runtime/src/rollup.config.js

@@ -0,0 +1,35 @@
+import resolve from '@rollup/plugin-node-resolve';
+// import commonjs from '@rollup/plugin-commonjs';
+import svelte from 'rollup-plugin-svelte';
+
+export default [
+    // browser-friendly UMD build
+    {
+        input: 'main.js',
+        output: {
+            name: 'bridge',
+            file: '../bridge.js',
+            format: 'umd',
+            exports: "named"
+        },
+        plugins: [
+            svelte({
+                // Optionally, preprocess components with svelte.preprocess:
+                // https://svelte.dev/docs#svelte_preprocess
+                // preprocess: {
+                //     style: ({content}) => {
+                //         return transformStyles(content);
+                //     }
+                // },
+
+                // Emit CSS as "files" for other plugins to process. default is true
+                emitCss: false,
+
+            }),
+            resolve({browser: true}), // so Rollup can find `ms`
+            // commonjs() // so Rollup can convert `ms` to an ES module
+        ]
+    },
+
+
+];

v2/internal/runtime/js/runtime/src/store.js

@@ -0,0 +1,39 @@
+
+import { writable } from 'svelte/store';
+
+/** Overlay */
+export const overlayVisible = writable(false);
+
+export function showOverlay() {
+    overlayVisible.set(true);
+}
+export function hideOverlay() {
+    overlayVisible.set(false);
+}
+
+/** Menubar **/
+export const menuVisible = writable(true);
+
+export function showMenuBar() {
+    menuVisible.set(true);
+}
+export function hideMenuBar() {
+    menuVisible.set(false);
+}
+
+/** Trays **/
+
+export const trays = writable([]);
+export function setTray(tray) {
+    trays.update((current) => {
+        // Remove existing if it exists, else add
+        const index = current.findIndex(item => item.ID === tray.ID);
+        if ( index === -1 ) {
+            current.push(tray);
+        } else {
+            current[index] = tray;
+        }
+        return current;
+    })
+}
+

v2/internal/runtime/js/runtime/src/websocket.js

@@ -0,0 +1,167 @@
+/*
+ _       __      _ __
+| |     / /___ _(_) /____
+| | /| / / __ `/ / / ___/
+| |/ |/ / /_/ / / (__  )
+|__/|__/\__,_/_/_/____/
+The lightweight framework for web-like apps
+(c) Lea Anthony 2019-present
+*/
+/* jshint esversion: 6 */
+
+
+import {setTray, hideOverlay, showOverlay} from "./store";
+
+let websocket = null;
+let callback = null;
+let connectTimer;
+
+function log(message) {
+    // eslint-disable-next-line
+    console.log(
+        '%c wails bridge %c ' + message + ' ',
+        'background: #aa0000; color: #fff; border-radius: 3px 0px 0px 3px; padding: 1px; font-size: 0.7rem',
+        'background: #009900; color: #fff; border-radius: 0px 3px 3px 0px; padding: 1px; font-size: 0.7rem'
+    );
+}
+
+export function StartWebsocket(userCallback) {
+
+    callback = userCallback;
+
+    window.onbeforeunload = function() {
+        if( websocket ) {
+            websocket.onclose = function () { };
+            websocket.close();
+            websocket = null;
+        }
+    }
+
+    // ...and attempt to connect
+    connect();
+
+}
+
+function setupIPCBridge() {
+    // darwin
+    window.webkit = {
+        messageHandlers: {
+            external: {
+                postMessage: (message) => {
+                    websocket.send(message);
+                }
+            },
+            windowDrag: {
+                postMessage: () => {
+                    // Ignore window drag events
+                }
+            }
+        }
+    };
+}
+
+// Handles incoming websocket connections
+function handleConnect() {
+    log('Connected to backend');
+    setupIPCBridge();
+    hideOverlay();
+    clearInterval(connectTimer);
+    websocket.onclose = handleDisconnect;
+    websocket.onmessage = handleMessage;
+}
+
+// Handles websocket disconnects
+function handleDisconnect() {
+    log('Disconnected from backend');
+    websocket = null;
+    showOverlay();
+    connect();
+}
+
+// Try to connect to the backend every 1s (default value).
+function connect() {
+    connectTimer = setInterval(function () {
+        if (websocket == null) {
+            websocket = new WebSocket('ws://' + window.location.hostname + ':34115/bridge');
+            websocket.onopen = handleConnect;
+            websocket.onerror = function (e) {
+                e.stopImmediatePropagation();
+                e.stopPropagation();
+                e.preventDefault();
+                websocket = null;
+                return false;
+            };
+        }
+    }, 1000);
+}
+
+// Adds a script to the Dom.
+// Removes it if second parameter is true.
+function addScript(script, remove) {
+    const s = document.createElement('script');
+    s.setAttribute('type', 'text/javascript');
+    s.textContent = script;
+    document.head.appendChild(s);
+
+    // Remove internal messages from the DOM
+    if (remove) {
+        s.parentNode.removeChild(s);
+    }
+}
+
+function handleMessage(message) {
+    // As a bridge we ignore js and css injections
+    switch (message.data[0]) {
+        // Wails library - inject!
+        case 'b':
+            message = message.data.slice(1)
+            addScript(message);
+            log('Loaded Wails Runtime');
+
+            // We need to now send a message to the backend telling it
+            // we have loaded (System Start)
+            window.webkit.messageHandlers.external.postMessage("SS");
+
+            // Now wails runtime is loaded, wails for the ready event
+            // and callback to the main app
+            // window.wails.Events.On('wails:loaded', function () {
+            if (callback) {
+                log('Notifying application');
+                callback(window.wails);
+            }
+            // });
+            break;
+        // 	// Notifications
+        // case 'n':
+        // 	addScript(message.data.slice(1), true);
+        // 	break;
+        // 	// Binding
+        // case 'b':
+        // 	const binding = message.data.slice(1);
+        // 	//log("Binding: " + binding)
+        // 	window.wails._.NewBinding(binding);
+        // 	break;
+        // 	// Call back
+        case 'c':
+            const callbackData = message.data.slice(1);
+            window.wails._.Callback(callbackData);
+            break;
+        // Tray
+        case 'T':
+            const trayMessage = message.data.slice(1);
+            switch (trayMessage[0]) {
+                case 'S':
+                    // Set tray
+                    const trayJSON = trayMessage.slice(1);
+                    let tray = JSON.parse(trayJSON)
+                    setTray(tray)
+                    break
+                default:
+                    log('Unknown tray message: ' + message.data);
+            }
+            break;
+
+        default:
+            log('Unknown message: ' + message.data);
+    }
+}

v2/internal/subsystem/runtime.go

@@ -4,6 +4,7 @@ import (
 	"context"
 	"fmt"
 	"strings"
+	"sync"
 
 	"github.com/wailsapp/wails/v2/internal/logger"
 	"github.com/wailsapp/wails/v2/internal/runtime"
@@ -30,6 +31,9 @@ type Runtime struct {
 
 	//ctx
 	ctx context.Context
+
+	// Startup Hook
+	startupOnce sync.Once
 }
 
 // NewRuntime creates a new runtime subsystem
@@ -75,7 +79,9 @@ func (r *Runtime) Start() error {
 				switch hook {
 				case "startup":
 					if r.startupCallback != nil {
-						go r.startupCallback(r.runtime)
+						r.startupOnce.Do(func() {
+							go r.startupCallback(r.runtime)
+						})
 					} else {
 						r.logger.Warning("no startup callback registered!")
 					}