mirror of https://github.com/anoshenko/rui.git
298 lines
6.4 KiB
Go
298 lines
6.4 KiB
Go
|
package rui
|
||
|
|
|
||
|
|
import (
|
||
|
|
_ "embed"
|
||
|
|
"fmt"
|
||
|
|
"io"
|
||
|
|
"log"
|
||
|
|
"math/rand"
|
||
|
|
"net/http"
|
||
|
|
"os/exec"
|
||
|
|
"runtime"
|
||
|
|
"strconv"
|
||
|
|
)
|
||
|
|
|
||
|
|
//go:embed app_scripts.js
|
||
|
|
var defaultScripts string
|
||
|
|
|
||
|
|
//go:embed app_styles.css
|
||
|
|
var appStyles string
|
||
|
|
|
||
|
|
//go:embed defaultTheme.rui
|
||
|
|
var defaultThemeText string
|
||
|
|
|
||
|
|
// Application - app interface
|
||
|
|
type Application interface {
|
||
|
|
// Start - start the application life cycle
|
||
|
|
Start(addr string)
|
||
|
|
Finish()
|
||
|
|
nextSessionID() int
|
||
|
|
removeSession(id int)
|
||
|
|
}
|
||
|
|
|
||
|
|
type application struct {
|
||
|
|
name, icon string
|
||
|
|
createContentFunc func(Session) SessionContent
|
||
|
|
sessions map[int]Session
|
||
|
|
}
|
||
|
|
|
||
|
|
func (app *application) getStartPage() string {
|
||
|
|
buffer := allocStringBuilder()
|
||
|
|
defer freeStringBuilder(buffer)
|
||
|
|
|
||
|
|
buffer.WriteString(`<!DOCTYPE html>
|
||
|
|
<html>
|
||
|
|
<head>
|
||
|
|
<meta charset="utf-8">
|
||
|
|
<title>`)
|
||
|
|
buffer.WriteString(app.name)
|
||
|
|
buffer.WriteString("</title>")
|
||
|
|
if app.icon != "" {
|
||
|
|
buffer.WriteString(`
|
||
|
|
<link rel="icon" href="`)
|
||
|
|
buffer.WriteString(app.icon)
|
||
|
|
buffer.WriteString(`">`)
|
||
|
|
}
|
||
|
|
|
||
|
|
buffer.WriteString(`
|
||
|
|
<base target="_blank" rel="noopener">
|
||
|
|
<meta name="viewport" content="width=device-width">
|
||
|
|
<style>`)
|
||
|
|
buffer.WriteString(appStyles)
|
||
|
|
buffer.WriteString(`</style>
|
||
|
|
<script>`)
|
||
|
|
buffer.WriteString(defaultScripts)
|
||
|
|
buffer.WriteString(`</script>
|
||
|
|
</head>
|
||
|
|
<body>
|
||
|
|
<div class="ruiRoot" id="ruiRootView"></div>
|
||
|
|
<div class="ruiPopupLayer" id="ruiPopupLayer" style="visibility: hidden;" onclick="clickOutsidePopup(event)"></div>
|
||
|
|
</body>
|
||
|
|
</html>`)
|
||
|
|
|
||
|
|
return buffer.String()
|
||
|
|
}
|
||
|
|
|
||
|
|
func (app *application) init(name, icon string) {
|
||
|
|
app.name = name
|
||
|
|
app.icon = icon
|
||
|
|
app.sessions = map[int]Session{}
|
||
|
|
}
|
||
|
|
|
||
|
|
func (app *application) Start(addr string) {
|
||
|
|
http.Handle("/", app)
|
||
|
|
log.Fatal(http.ListenAndServe(addr, nil))
|
||
|
|
}
|
||
|
|
|
||
|
|
func (app *application) Finish() {
|
||
|
|
for _, session := range app.sessions {
|
||
|
|
session.close()
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
func (app *application) nextSessionID() int {
|
||
|
|
n := rand.Intn(0x7FFFFFFE) + 1
|
||
|
|
_, ok := app.sessions[n]
|
||
|
|
for ok {
|
||
|
|
n = rand.Intn(0x7FFFFFFE) + 1
|
||
|
|
_, ok = app.sessions[n]
|
||
|
|
}
|
||
|
|
return n
|
||
|
|
}
|
||
|
|
|
||
|
|
func (app *application) removeSession(id int) {
|
||
|
|
delete(app.sessions, id)
|
||
|
|
}
|
||
|
|
|
||
|
|
func (app *application) ServeHTTP(w http.ResponseWriter, req *http.Request) {
|
||
|
|
|
||
|
|
if ProtocolInDebugLog {
|
||
|
|
DebugLogF("%s %s", req.Method, req.URL.Path)
|
||
|
|
}
|
||
|
|
|
||
|
|
switch req.Method {
|
||
|
|
case "GET":
|
||
|
|
switch req.URL.Path {
|
||
|
|
case "/":
|
||
|
|
w.WriteHeader(http.StatusOK)
|
||
|
|
io.WriteString(w, app.getStartPage())
|
||
|
|
|
||
|
|
case "/ws":
|
||
|
|
if brige := CreateSocketBrige(w, req); brige != nil {
|
||
|
|
go app.socketReader(brige)
|
||
|
|
}
|
||
|
|
|
||
|
|
default:
|
||
|
|
filename := req.URL.Path[1:]
|
||
|
|
if size := len(filename); size > 0 && filename[size-1] == '/' {
|
||
|
|
filename = filename[:size-1]
|
||
|
|
}
|
||
|
|
|
||
|
|
if !serveResourceFile(filename, w, req) {
|
||
|
|
w.WriteHeader(http.StatusNotFound)
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
func (app *application) socketReader(brige WebBrige) {
|
||
|
|
var session Session
|
||
|
|
events := make(chan DataObject, 1024)
|
||
|
|
|
||
|
|
for {
|
||
|
|
message, ok := brige.ReadMessage()
|
||
|
|
if !ok {
|
||
|
|
events <- NewDataObject("disconnect")
|
||
|
|
return
|
||
|
|
}
|
||
|
|
|
||
|
|
if ProtocolInDebugLog {
|
||
|
|
DebugLog(message)
|
||
|
|
}
|
||
|
|
|
||
|
|
if obj := ParseDataText(message); obj != nil {
|
||
|
|
command := obj.Tag()
|
||
|
|
switch 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 "answer":
|
||
|
|
session.handleAnswer(obj)
|
||
|
|
|
||
|
|
case "imageLoaded":
|
||
|
|
session.imageManager().imageLoaded(obj, session)
|
||
|
|
|
||
|
|
case "imageError":
|
||
|
|
session.imageManager().imageLoadError(obj, session)
|
||
|
|
|
||
|
|
default:
|
||
|
|
events <- obj
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
func sessionEventHandler(session Session, events chan DataObject, brige WebBrige) {
|
||
|
|
for {
|
||
|
|
data := <-events
|
||
|
|
|
||
|
|
switch command := data.Tag(); command {
|
||
|
|
case "disconnect":
|
||
|
|
session.onDisconnect()
|
||
|
|
return
|
||
|
|
|
||
|
|
case "session-close":
|
||
|
|
session.onFinish()
|
||
|
|
session.App().removeSession(session.ID())
|
||
|
|
brige.Close()
|
||
|
|
|
||
|
|
case "session-pause":
|
||
|
|
session.onPause()
|
||
|
|
|
||
|
|
case "session-resume":
|
||
|
|
session.onResume()
|
||
|
|
|
||
|
|
case "resize":
|
||
|
|
session.handleResize(data)
|
||
|
|
|
||
|
|
default:
|
||
|
|
session.handleViewEvent(command, data)
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
func (app *application) startSession(params DataObject, events chan DataObject, brige WebBrige) (Session, string) {
|
||
|
|
if app.createContentFunc == nil {
|
||
|
|
return nil, ""
|
||
|
|
}
|
||
|
|
|
||
|
|
session := newSession(app, app.nextSessionID(), "", params)
|
||
|
|
session.setBrige(events, brige)
|
||
|
|
if !session.setContent(app.createContentFunc(session), session) {
|
||
|
|
return nil, ""
|
||
|
|
}
|
||
|
|
|
||
|
|
app.sessions[session.ID()] = session
|
||
|
|
|
||
|
|
answer := allocStringBuilder()
|
||
|
|
defer freeStringBuilder(answer)
|
||
|
|
|
||
|
|
answer.WriteString("sessionID = '")
|
||
|
|
answer.WriteString(strconv.Itoa(session.ID()))
|
||
|
|
answer.WriteString("';\n")
|
||
|
|
session.writeInitScript(answer)
|
||
|
|
answerText := answer.String()
|
||
|
|
|
||
|
|
if ProtocolInDebugLog {
|
||
|
|
DebugLog("Start session:")
|
||
|
|
DebugLog(answerText)
|
||
|
|
}
|
||
|
|
return session, answerText
|
||
|
|
}
|
||
|
|
|
||
|
|
// NewApplication - create the new application of the single view type.
|
||
|
|
func NewApplication(name, icon string, createContentFunc func(Session) SessionContent) Application {
|
||
|
|
app := new(application)
|
||
|
|
app.init(name, icon)
|
||
|
|
app.createContentFunc = createContentFunc
|
||
|
|
return app
|
||
|
|
}
|
||
|
|
|
||
|
|
func OpenBrowser(url string) bool {
|
||
|
|
var err error
|
||
|
|
|
||
|
|
switch runtime.GOOS {
|
||
|
|
case "linux":
|
||
|
|
err = exec.Command("xdg-open", url).Start()
|
||
|
|
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
|
||
|
|
}
|