Updated wasm support

appServer.go

@@ -200,7 +200,7 @@ func (app *application) startSession(params DataObject, events chan DataObject,
 
 	session := newSession(app, app.nextSessionID(), "", params)
 	session.setBrige(events, brige)
-	if !session.setContent(app.createContentFunc(session), session) {
+	if !session.setContent(app.createContentFunc(session)) {
 		return nil, ""
 	}
 

appWasm.go

@@ -4,6 +4,7 @@ package rui
 
 import (
 	_ "embed"
+	"strings"
 	"syscall/js"
 )
 
@@ -15,35 +16,88 @@ type wasmApp struct {
 	createContentFunc func(Session) SessionContent
 	session           Session
 	brige             webBrige
+	close             chan DataObject
 }
 
 func (app *wasmApp) Finish() {
 	app.session.close()
 }
 
-func (app *wasmApp) startSession(this js.Value, args []js.Value) interface{} {
+func wasmLog(text string) {
-	if app.createContentFunc == nil || len(args) == 1 {
+	js.Global().Call("log", text)
-		return nil
+}
-	}
 
-	params := ParseDataText(args[0].String())
+func (app *wasmApp) handleMessage(this js.Value, args []js.Value) any {
-	session := newSession(app, 0, "", params)
+	if len(args) > 0 {
-	session.setBrige(make(chan DataObject), app.brige)
+		if obj := ParseDataText(args[0].String()); obj != nil {
-	if !session.setContent(app.createContentFunc(session), session) {
+			switch command := obj.Tag(); command {
-		return nil
+			/*
-	}
+						case "startSession":
+							answer := ""
+							if session, answer = app.startSession(obj, events, brige); session != nil {
+								if !brige.writeMessage(answer) {
+									return
+								}
+								session.onStart()
+								go sessionEventHandler(session, events, brige)
+							}
 
-	app.session = session
+						case "reconnect":
+							if sessionText, ok := obj.PropertyValue("session"); ok {
+								if sessionID, err := strconv.Atoi(sessionText); err == nil {
+									if session = app.sessions[sessionID]; session != nil {
+										session.setBrige(events, brige)
+										answer := allocStringBuilder()
+										defer freeStringBuilder(answer)
 
-	answer := allocStringBuilder()
+										session.writeInitScript(answer)
-	defer freeStringBuilder(answer)
+										if !brige.writeMessage(answer.String()) {
+											return
+										}
+										session.onReconnect()
+										go sessionEventHandler(session, events, brige)
+										return
+									}
+									DebugLogF("Session #%d not exists", sessionID)
+								} else {
+									ErrorLog(`strconv.Atoi(sessionText) error: ` + err.Error())
+								}
+							} else {
+								ErrorLog(`"session" key not found`)
+							}
 
-	session.writeInitScript(answer)
+							answer := ""
-	answerText := answer.String()
+							if session, answer = app.startSession(obj, events, brige); session != nil {
+								if !brige.writeMessage(answer) {
+									return
+								}
+								session.onStart()
+								go sessionEventHandler(session, events, brige)
+							}
 
-	if ProtocolInDebugLog {
+									case "disconnect":
-		DebugLog("Start session:")
+					session.onDisconnect()
-		DebugLog(answerText)
+					return
+
+				case "session-close":
+					session.onFinish()
+					session.App().removeSession(session.ID())
+					brige.close()
+
+			*/
+			case "answer":
+				app.session.handleAnswer(obj)
+
+			case "imageLoaded":
+				app.session.imageManager().imageLoaded(obj, app.session)
+
+			case "imageError":
+				app.session.imageManager().imageLoadError(obj, app.session)
+
+			default:
+				app.session.handleEvent(command, obj)
+			}
+		}
 	}
 	return nil
 }
@@ -51,117 +105,75 @@ func (app *wasmApp) startSession(this js.Value, args []js.Value) interface{} {
 func (app *wasmApp) removeSession(id int) {
 }
 
+func (app *wasmApp) createSession() Session {
+	session := newSession(app, 0, "", ParseDataText(js.Global().Call("sessionInfo", "").String()))
+	session.setBrige(app.close, app.brige)
+	session.setContent(app.createContentFunc(session))
+	return session
+}
+
+func (app *wasmApp) init() {
+
+	document := js.Global().Get("document")
+	body := document.Call("querySelector", "body")
+
+	script := document.Call("createElement", "script")
+	script.Set("type", "text/javascript")
+	script.Set("textContent", defaultScripts+wasmScripts)
+	body.Call("appendChild", script)
+
+	js.Global().Set("sendMessage", js.FuncOf(app.handleMessage))
+
+	app.close = make(chan DataObject)
+	app.session = app.createSession()
+
+	style := document.Call("createElement", "style")
+	css := appStyles + app.session.getCurrentTheme().cssText(app.session)
+	css = strings.ReplaceAll(css, `\n`, "\n")
+	css = strings.ReplaceAll(css, `\t`, "\t")
+	style.Set("textContent", css)
+	document.Call("querySelector", "head").Call("appendChild", style)
+
+	buffer := allocStringBuilder()
+	defer freeStringBuilder(buffer)
+
+	div := document.Call("createElement", "div")
+	div.Set("className", "ruiRoot")
+	div.Set("id", "ruiRootView")
+	viewHTML(app.session.RootView(), buffer)
+	div.Set("innerHTML", buffer.String())
+	body.Call("appendChild", div)
+
+	div = document.Call("createElement", "div")
+	div.Set("className", "ruiPopupLayer")
+	div.Set("id", "ruiPopupLayer")
+	div.Set("onclick", "clickOutsidePopup(event)")
+	div.Set("style", "visibility: hidden;")
+	body.Call("appendChild", div)
+
+	div = document.Call("createElement", "a")
+	div.Set("id", "ruiDownloader")
+	div.Set("download", "")
+	div.Set("style", "display: none;")
+	body.Call("appendChild", div)
+}
+
 // StartApp - create the new wasmApp and start it
 func StartApp(addr string, createContentFunc func(Session) SessionContent, params AppParams) {
-	app := new(wasmApp)
+	SetDebugLog(wasmLog)
-	app.params = params
+	SetErrorLog(wasmLog)
-	app.createContentFunc = createContentFunc
 
 	if createContentFunc == nil {
 		return
 	}
 
+	app := new(wasmApp)
+	app.params = params
+	app.createContentFunc = createContentFunc
 	app.brige = createWasmBrige()
-	js.Global().Set("startSession", js.FuncOf(app.startSession))
 
-	/*
+	app.init()
-		script := defaultScripts + wasmScripts
+	<-app.close
-		script = strings.ReplaceAll(script, "\\", `\\`)
-		script = strings.ReplaceAll(script, "\n", `\n`)
-		script = strings.ReplaceAll(script, "\t", `\t`)
-		script = strings.ReplaceAll(script, "\"", `\"`)
-		script = strings.ReplaceAll(script, "'", `\'`)
-
-		js.Global().Call("execScript", `document.getElementById('ruiscript').text += "`+script+`"`)
-	*/
-
-	document := js.Global().Get("document")
-	body := document.Call("querySelector", "body")
-	body.Set("innerHTML", `<div class="ruiRoot" id="ruiRootView"></div>
-<div class="ruiPopupLayer" id="ruiPopupLayer" style="visibility: hidden;" onclick="clickOutsidePopup(event)"></div>
-<a id="ruiDownloader" download style="display: none;"></a>`)
-
-	//js.Global().Call("execScript", "initSession()")
-	js.Global().Call("initSession", "")
-	//window.Call("execScript", "initSession()")
-
-	for true {
-		if message, ok := app.brige.readMessage(); ok && app.session != nil {
-			if ProtocolInDebugLog {
-				DebugLog(message)
-			}
-
-			if obj := ParseDataText(message); obj != nil {
-				switch command := obj.Tag(); command {
-				/*
-							case "startSession":
-								answer := ""
-								if session, answer = app.startSession(obj, events, brige); session != nil {
-									if !brige.writeMessage(answer) {
-										return
-									}
-									session.onStart()
-									go sessionEventHandler(session, events, brige)
-								}
-
-							case "reconnect":
-								if sessionText, ok := obj.PropertyValue("session"); ok {
-									if sessionID, err := strconv.Atoi(sessionText); err == nil {
-										if session = app.sessions[sessionID]; session != nil {
-											session.setBrige(events, brige)
-											answer := allocStringBuilder()
-											defer freeStringBuilder(answer)
-
-											session.writeInitScript(answer)
-											if !brige.writeMessage(answer.String()) {
-												return
-											}
-											session.onReconnect()
-											go sessionEventHandler(session, events, brige)
-											return
-										}
-										DebugLogF("Session #%d not exists", sessionID)
-									} else {
-										ErrorLog(`strconv.Atoi(sessionText) error: ` + err.Error())
-									}
-								} else {
-									ErrorLog(`"session" key not found`)
-								}
-
-								answer := ""
-								if session, answer = app.startSession(obj, events, brige); session != nil {
-									if !brige.writeMessage(answer) {
-										return
-									}
-									session.onStart()
-									go sessionEventHandler(session, events, brige)
-								}
-
-										case "disconnect":
-						session.onDisconnect()
-						return
-
-					case "session-close":
-						session.onFinish()
-						session.App().removeSession(session.ID())
-						brige.close()
-
-				*/
-				case "answer":
-					app.session.handleAnswer(obj)
-
-				case "imageLoaded":
-					app.session.imageManager().imageLoaded(obj, app.session)
-
-				case "imageError":
-					app.session.imageManager().imageLoadError(obj, app.session)
-
-				default:
-					app.session.handleEvent(command, obj)
-				}
-			}
-		}
-	}
 }
 
 func FinishApp() {
@@ -171,31 +183,3 @@ func FinishApp() {
 func OpenBrowser(url string) bool {
 	return false
 }
-
-/*
-func OpenBrowser(url string) bool {
-	var err error
-
-	switch runtime.GOOS {
-	case "linux":
-		for _, provider := range []string{"xdg-open", "x-www-browser", "www-browser"} {
-			if _, err = exec.LookPath(provider); err == nil {
-				if exec.Command(provider, url).Start(); err == nil {
-					return true
-				}
-			}
-		}
-
-	case "windows":
-		err = exec.Command("rundll32", "url.dll,FileProtocolHandler", url).Start()
-
-	case "darwin":
-		err = exec.Command("open", url).Start()
-
-	default:
-		err = fmt.Errorf("unsupported platform")
-	}
-
-	return err != nil
-}
-*/

app_scripts.js

@@ -14,6 +14,47 @@ window.onblur = function(event) {
 	sendMessage( "session-pause{session=" + sessionID +"}" );
 }
 
+function sessionInfo() {
+
+	const touch_screen = (('ontouchstart' in document.documentElement) || (navigator.maxTouchPoints > 0) || (navigator.msMaxTouchPoints > 0)) ? "1" : "0";
+	var message = "startSession{touch=" + touch_screen 
+	
+	const style = window.getComputedStyle(document.body);
+	if (style) {
+		var direction = style.getPropertyValue('direction');
+		if (direction) {
+			message += ",direction=" + direction
+		}
+	}
+
+	const lang = window.navigator.language;
+	if (lang) {
+		message += ",language=\"" + lang + "\"";
+	}
+
+	const langs = window.navigator.languages;
+	if (langs) {
+		message += ",languages=\"" + langs + "\"";
+	}
+
+	const userAgent = window.navigator.userAgent
+	if (userAgent) {
+		message += ",user-agent=\"" + userAgent + "\"";
+	}
+
+	const darkThemeMq = window.matchMedia("(prefers-color-scheme: dark)");
+	if (darkThemeMq.matches) {
+		message += ",dark=1";
+	} 
+
+	const pixelRatio = window.devicePixelRatio;
+	if (pixelRatio) {
+		message += ",pixel-ratio=" + pixelRatio;
+	}
+
+	return message + "}";
+}
+
 function getIntAttribute(element, tag) {
 	let value = element.getAttribute(tag);
 	if (value) {
@@ -1276,6 +1317,10 @@ function startDowndload(url, filename) {
 	}
 }
 
+function setTitle(title) {
+	document.title = title;
+}
+
 function setTitleColor(color) {
 	var metas = document.getElementsByTagName('meta');
 	if (metas) {
@@ -1292,6 +1337,10 @@ function setTitleColor(color) {
 	document.getElementsByTagName('head')[0].appendChild(meta);
 }
 
+function openURL(url) {
+	window.open(url, "_blank");
+}
+
 function detailsEvent(element) {
 	sendMessage("details-open{session=" + sessionID + ",id=" + element.id + ",open=" + (element.open ? "1}" : "0}"));
 }
@@ -1742,4 +1791,8 @@ function getPropertyValue(answerID, elementId, name) {
 	}
 
 	sendMessage('answer{answerID=' + answerID + ', value=""}')
+}
+
+function appendStyles(styles) {
+	document.querySelector('style').textContent += styles
 }

app_socket.js

@@ -26,44 +26,7 @@ window.onload = function() {
 };
 
 function socketOpen() {
-
+	sendMessage( sessionInfo() );
-	const touch_screen = (('ontouchstart' in document.documentElement) || (navigator.maxTouchPoints > 0) || (navigator.msMaxTouchPoints > 0)) ? "1" : "0";
-	var message = "startSession{touch=" + touch_screen 
-	
-	const style = window.getComputedStyle(document.body);
-	if (style) {
-		var direction = style.getPropertyValue('direction');
-		if (direction) {
-			message += ",direction=" + direction
-		}
-	}
-
-	const lang = window.navigator.language;
-	if (lang) {
-		message += ",language=\"" + lang + "\"";
-	}
-
-	const langs = window.navigator.languages;
-	if (langs) {
-		message += ",languages=\"" + langs + "\"";
-	}
-
-	const userAgent = window.navigator.userAgent
-	if (userAgent) {
-		message += ",user-agent=\"" + userAgent + "\"";
-	}
-
-	const darkThemeMq = window.matchMedia("(prefers-color-scheme: dark)");
-	if (darkThemeMq.matches) {
-		message += ",dark=1";
-	} 
-
-	const pixelRatio = window.devicePixelRatio;
-	if (pixelRatio) {
-		message += ",pixel-ratio=" + pixelRatio;
-	}
-
-	sendMessage( message + "}" );
 }
 
 function socketReopen() {

app_wasm.js

@@ -1,47 +1,8 @@
 
-
+function log(s) {
-function initSession() {
+	console.log(s);
-
-	const touch_screen = (('ontouchstart' in document.documentElement) || (navigator.maxTouchPoints > 0) || (navigator.msMaxTouchPoints > 0)) ? "1" : "0";
-	var message = "sessionInfo{touch=" + touch_screen 
-	
-	const style = window.getComputedStyle(document.body);
-	if (style) {
-		var direction = style.getPropertyValue('direction');
-		if (direction) {
-			message += ",direction=" + direction
-		}
-	}
-
-	const lang = window.navigator.language;
-	if (lang) {
-		message += ",language=\"" + lang + "\"";
-	}
-
-	const langs = window.navigator.languages;
-	if (langs) {
-		message += ",languages=\"" + langs + "\"";
-	}
-
-	const userAgent = window.navigator.userAgent
-	if (userAgent) {
-		message += ",user-agent=\"" + userAgent + "\"";
-	}
-
-	const darkThemeMq = window.matchMedia("(prefers-color-scheme: dark)");
-	if (darkThemeMq.matches) {
-		message += ",dark=1";
-	} 
-
-	const pixelRatio = window.devicePixelRatio;
-	if (pixelRatio) {
-		message += ",pixel-ratio=" + pixelRatio;
-	}
-
-	startSession( message + "}" );
 }
 
-
 window.onfocus = function(event) {
 	windowFocus = true
 	sendMessage( "session-resume{session=" + sessionID +"}" );

downloadFile.go

@@ -2,7 +2,6 @@ package rui
 
 import (
 	"bytes"
-	"fmt"
 	"math/rand"
 	"net/http"
 	"os"
@@ -24,7 +23,7 @@ func (session *sessionData) startDownload(file downloadFile) {
 	currentDownloadId++
 	id := strconv.Itoa(currentDownloadId)
 	downloadFiles[id] = file
-	session.runScript(fmt.Sprintf(`startDowndload("%s", "%s")`, id, file.filename))
+	session.runFunc("startDowndload", id, file.filename)
 }
 
 func serveDownloadFile(id string, w http.ResponseWriter, r *http.Request) bool {

session.go

@@ -67,7 +67,7 @@ type Session interface {
 
 	// Content returns the SessionContent of session
 	Content() SessionContent
-	setContent(content SessionContent, self Session) bool
+	setContent(content SessionContent) bool
 
 	// SetTitle sets the text of the browser title/tab
 	SetTitle(title string)
@@ -91,6 +91,7 @@ type Session interface {
 	// OpenURL opens the url in the new browser tab
 	OpenURL(url string)
 
+	getCurrentTheme() Theme
 	registerAnimation(props []AnimatedProperty) string
 
 	resolveConstants(value string) (string, bool)
@@ -245,10 +246,10 @@ func (session *sessionData) Content() SessionContent {
 	return session.content
 }
 
-func (session *sessionData) setContent(content SessionContent, self Session) bool {
+func (session *sessionData) setContent(content SessionContent) bool {
 	if content != nil {
 		session.content = content
-		session.rootView = content.CreateRootView(self)
+		session.rootView = content.CreateRootView(session)
 		if session.rootView != nil {
 			session.rootView.setParentID("ruiRootView")
 			return true
@@ -554,11 +555,11 @@ func (session *sessionData) handleEvent(command string, data DataObject) {
 
 func (session *sessionData) SetTitle(title string) {
 	title, _ = session.GetString(title)
-	session.runScript(`document.title = "` + title + `";`)
+	session.runFunc("setTitle", title)
 }
 
 func (session *sessionData) SetTitleColor(color Color) {
-	session.runScript(`setTitleColor("` + color.cssString() + `");`)
+	session.runFunc("setTitleColor", color.cssString())
 }
 
 func (session *sessionData) RemoteAddr() string {
@@ -570,5 +571,5 @@ func (session *sessionData) OpenURL(urlStr string) {
 		ErrorLog(err.Error())
 		return
 	}
-	session.runScript(`window.open("` + urlStr + `", "_blank");`)
+	session.runFunc("openURL", urlStr)
 }

sessionTheme.go

@@ -325,15 +325,16 @@ func (session *sessionData) SetLanguage(lang string) {
 	if lang != session.language {
 		session.language = lang
 
-		if session.rootView != nil {
+		if session.rootView != nil && session.brige != nil {
 			buffer := allocStringBuilder()
 			defer freeStringBuilder(buffer)
 
-			buffer.WriteString(`document.getElementById('ruiRootView').innerHTML = '`)
+			//buffer.WriteString(`document.getElementById('ruiRootView').innerHTML = '`)
 			viewHTML(session.rootView, buffer)
-			buffer.WriteString("';\nscanElementsSize();")
+			//buffer.WriteString("';\nscanElementsSize();")
 
-			session.runScript(buffer.String())
+			//session.runScript(buffer.String())
+			session.brige.updateInnerHTML("ruiRootView", buffer.String())
 		}
 	}
 }

wasmBrige.go

@@ -3,11 +3,10 @@
 package rui
 
 import (
+	"fmt"
 	"strconv"
 	"sync"
 	"syscall/js"
-
-	"github.com/gorilla/websocket"
 )
 
 type wasmBrige struct {
@@ -18,11 +17,6 @@ type wasmBrige struct {
 	closed      bool
 }
 
-var upgrader = websocket.Upgrader{
-	ReadBufferSize:  1024,
-	WriteBufferSize: 8096,
-}
-
 func createWasmBrige() webBrige {
 	brige := new(wasmBrige)
 	brige.queue = make(chan string, 1000)
@@ -30,23 +24,58 @@ func createWasmBrige() webBrige {
 	brige.answer = make(map[int]chan DataObject)
 	brige.closed = false
 
-	js.Global().Set("sendMessage", js.FuncOf(brige.sendMessage))
-
 	return brige
 }
 
-func (brige *wasmBrige) sendMessage(this js.Value, args []js.Value) interface{} {
+func (brige *wasmBrige) startUpdateScript(htmlID string) bool {
-	if len(args) > 0 {
+	return false
-		brige.queue <- args[0].String()
+}
+
+func (brige *wasmBrige) finishUpdateScript(htmlID string) {
+}
+
+func (brige *wasmBrige) runFunc(funcName string, args ...any) bool {
+	if ProtocolInDebugLog {
+		text := funcName + "("
+		for i, arg := range args {
+			if i > 0 {
+				text += fmt.Sprintf(", `%v`", arg)
+			} else {
+				text += fmt.Sprintf("`%v`", arg)
+			}
+		}
+		DebugLog(text + ")")
 	}
-	return nil
+
+	js.Global().Call(funcName, args...)
+	return true
+}
+
+func (brige *wasmBrige) updateInnerHTML(htmlID, html string) {
+	brige.runFunc("updateInnerHTML", htmlID, html)
+}
+
+func (brige *wasmBrige) appendToInnerHTML(htmlID, html string) {
+	brige.runFunc("appendToInnerHTML", htmlID, html)
+}
+
+func (brige *wasmBrige) updateCSSProperty(htmlID, property, value string) {
+	brige.runFunc("updateCSSProperty", htmlID, property, value)
+}
+
+func (brige *wasmBrige) updateProperty(htmlID, property string, value any) {
+	brige.runFunc("updateProperty", htmlID, property, value)
+}
+
+func (brige *wasmBrige) removeProperty(htmlID, property string) {
+	brige.runFunc("removeProperty", htmlID, property)
 }
 
 func (brige *wasmBrige) close() {
 }
 
 func (brige *wasmBrige) readMessage() (string, bool) {
-	return <-brige.queue, true
+	return "", false
 }
 
 func (brige *wasmBrige) writeMessage(script string) bool {
@@ -61,25 +90,36 @@ func (brige *wasmBrige) writeMessage(script string) bool {
 	return true
 }
 
-func (brige *wasmBrige) runGetterScript(script string) DataObject {
+/*
-	brige.answerMutex.Lock()
+	func (brige *wasmBrige) runGetterScript(script string) DataObject {
-	answerID := brige.answerID
+		brige.answerMutex.Lock()
-	brige.answerID++
+		answerID := brige.answerID
-	brige.answerMutex.Unlock()
+		brige.answerID++
+		brige.answerMutex.Unlock()
 
-	answer := make(chan DataObject)
+		answer := make(chan DataObject)
-	brige.answer[answerID] = answer
+		brige.answer[answerID] = answer
-	errorText := ""
+		errorText := ""
 
-	js.Global().Set("answerID", strconv.Itoa(answerID))
+		js.Global().Set("answerID", strconv.Itoa(answerID))
 
-	window := js.Global().Get("window")
+		window := js.Global().Get("window")
-	window.Call("execScript", script)
+		window.Call("execScript", script)
 
-	result := NewDataObject("error")
+		result := NewDataObject("error")
-	result.SetPropertyValue("text", errorText)
+		result.SetPropertyValue("text", errorText)
-	delete(brige.answer, answerID)
+		delete(brige.answer, answerID)
-	return result
+		return result
+	}
+*/
+
+func (brige *wasmBrige) canvasTextMetrics(htmlID, font, text string) TextMetrics {
+	// TODO
+	return TextMetrics{}
+}
+
+func (brige *wasmBrige) htmlPropertyValue(htmlID, name string) string {
+	return ""
 }
 
 func (brige *wasmBrige) answerReceived(answer DataObject) {

webBrige.go

@@ -175,7 +175,6 @@ func (brige *wsBrige) updateCSSProperty(htmlID, property, value string) {
 	} else {
 		brige.runFunc("updateCSSProperty", htmlID, property, value)
 	}
-
 }
 
 func (brige *wsBrige) updateProperty(htmlID, property string, value any) {