DevTools: Introduce Target class which holds connection & models

Source/devtools/front_end/inspector.js

 /*
  * Copyright (C) 2006, 2007, 2008 Apple Inc.  All rights reserved.
  * Copyright (C) 2007 Matt Lilek (pewtermoose@gmail.com).
  * Copyright (C) 2009 Joseph Pecoraro
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1.  Redistributions of source code must retain the above copyright
@@ skipping 175 matching lines @@
         var warnings = WebInspector.console.warnings;
         WebInspector.inspectorView.setErrorAndWarningCounts(errors, warnings);
     },
 
     inspectedPageDomain: function()
     {
         var parsedURL = WebInspector.inspectedPageURL && WebInspector.inspectedPageURL.asParsedURL();
         return parsedURL ? parsedURL.host : "";
     },
 
-    _initializeCapability: function(name, callback, error, result)
-    {
-        Capabilities[name] = result;
-        if (callback)
-            callback();
-    },
-
     _debuggerPaused: function()
     {
         this.debuggerModel.removeEventListener(WebInspector.DebuggerModel.Events.DebuggerPaused, this._debuggerPaused, this);
         WebInspector.showPanel("sources");
     }
 }
 
 WebInspector.Events = {
     InspectorLoaded: "InspectorLoaded"
 }
@@ skipping 57 matching lines @@
     var ws;
     if ("ws" in WebInspector.queryParamsObject)
         ws = "ws://" + WebInspector.queryParamsObject.ws;
     else if ("page" in WebInspector.queryParamsObject) {
         var page = WebInspector.queryParamsObject.page;
         var host = "host" in WebInspector.queryParamsObject ? WebInspector.queryParamsObject.host : window.location.host;
         ws = "ws://" + host + "/devtools/page/" + page;
     }
 
     if (ws) {
         WebInspector.socket = new WebSocket(ws);

[pfeldman, 2014/03/08 16:10:00]

What about web socket connection? It is not a main connection. You should either
follow up with refactoring or revert this change.

         WebInspector.socket.onmessage = function(message) { InspectorBackend.connection().dispatch(message.data); }
         WebInspector.socket.onerror = function(error) { console.error(error); }
         WebInspector.socket.onopen = function() {
             InspectorFrontendHost.sendMessageToBackend = WebInspector.socket.send.bind(WebInspector.socket);
             WebInspector.doLoadedDone();
         }
         WebInspector.socket.onclose = function() {
             if (!WebInspector.socket._detachReason)
                 (new WebInspector.RemoteDebuggingTerminatedScreen("websocket_closed")).showModal();
         }
         return;
     }
 
     WebInspector.doLoadedDone();
 
-    // In case of loading as a web page with no bindings / harness, kick off initialization manually.
-    if (InspectorFrontendHost.isStub) {
+    if (InspectorFrontendHost.isStub)
         InspectorFrontendAPI.dispatchQueryParameters(WebInspector.queryParamsObject);
-        WebInspector._doLoadedDoneWithCapabilities();
-    }
 }
 
 WebInspector.doLoadedDone = function()
 {
     // Install styles and themes
     WebInspector.installPortStyles();
     if (WebInspector.socket)
         document.body.classList.add("remote");
 
     if (WebInspector.queryParamsObject.toolbarColor && WebInspector.queryParamsObject.textColor)
         WebInspector.setToolbarColors(WebInspector.queryParamsObject.toolbarColor, WebInspector.queryParamsObject.textColor);
 
     var workerId = WebInspector.queryParamsObject["dedicatedWorkerId"];
     if (workerId)
         this._initializeDedicatedWorkerFrontend(workerId);
 
     var connection = workerId ? new WebInspector.WorkerConnection(workerId) : new InspectorBackendClass.MainConnection();
     InspectorBackend.setConnection(connection);
 
-    PageAgent.canScreencast(WebInspector._initializeCapability.bind(WebInspector, "canScreencast", null));
-    WorkerAgent.canInspectWorkers(WebInspector._initializeCapability.bind(WebInspector, "canInspectWorkers", WebInspector._doLoadedDoneWithCapabilities.bind(WebInspector)));
+    WebInspector.targetManager = new WebInspector.TargetManager();
+    WebInspector.targetManager.createTarget(connection, WebInspector._doLoadedDoneWithCapabilities.bind(WebInspector));
 }
 
-WebInspector._doLoadedDoneWithCapabilities = function()
+WebInspector._doLoadedDoneWithCapabilities = function(mainTarget)
 {
     new WebInspector.VersionController().updateVersion();
-
     WebInspector.shortcutsScreen = new WebInspector.ShortcutsScreen();
     this._registerShortcuts();
 
     // set order of some sections explicitly
     WebInspector.shortcutsScreen.section(WebInspector.UIString("Console"));
     WebInspector.shortcutsScreen.section(WebInspector.UIString("Elements Panel"));
     WebInspector.ShortcutsScreen.registerShortcuts();
 
-    this.console = new WebInspector.ConsoleModel();
     this.console.addEventListener(WebInspector.ConsoleModel.Events.ConsoleCleared, this._resetErrorAndWarningCounts, this);
     this.console.addEventListener(WebInspector.ConsoleModel.Events.MessageAdded, this._updateErrorAndWarningCounts, this);
     this.console.addEventListener(WebInspector.ConsoleModel.Events.RepeatCountUpdated, this._updateErrorAndWarningCounts, this);
-    this.networkManager = new WebInspector.NetworkManager();
-    this.resourceTreeModel = new WebInspector.ResourceTreeModel(this.networkManager);
-    this.debuggerModel = new WebInspector.DebuggerModel();
+
     this.debuggerModel.addEventListener(WebInspector.DebuggerModel.Events.DebuggerPaused, this._debuggerPaused, this);
     this.networkLog = new WebInspector.NetworkLog();
-    this.domAgent = new WebInspector.DOMAgent();
-    this.workerManager = new WebInspector.WorkerManager(Capabilities.canInspectWorkers);
-    this.runtimeModel = new WebInspector.RuntimeModel(this.resourceTreeModel);
 
     this.zoomManager = new WebInspector.ZoomManager();
 
     this.advancedSearchController = new WebInspector.AdvancedSearchController();
     this.consoleView = new WebInspector.ConsoleView(WebInspector.isWorkerFrontend());
 
     InspectorBackend.registerInspectorDispatcher(this);
 
     this.isolatedFileSystemManager = new WebInspector.IsolatedFileSystemManager();
     this.isolatedFileSystemDispatcher = new WebInspector.IsolatedFileSystemDispatcher(this.isolatedFileSystemManager);
@@ skipping 38 matching lines @@
     new WebInspector.PresentationConsoleMessageHelper(this.workspace);
 
     // Create settings before loading modules.
     WebInspector.settings.initializeBackendSettings();
 
     this._registerModules();
 
     this.panels = {};
     this.inspectorView = new WebInspector.InspectorView();
     // Screencast controller creates a root view itself.
-    if (Capabilities.canScreencast)
+    if (mainTarget.canScreencast)
         this._screencastController = new WebInspector.ScreencastController();
     else
         this._createRootView();
     this._createGlobalStatusBarItems();
 
     this.addMainEventListeners(document);
 
     window.addEventListener("resize", this.windowResize.bind(this), true);
 
     var errorWarningCount = document.getElementById("error-warning-count");
@@ skipping 493 matching lines @@
         this._fontFamily = "'Lucida Grande', sans-serif";
         break;
     case "windows":
         this._fontFamily = "'Segoe UI', Tahoma, sans-serif";
         break;
     }
     return WebInspector._fontFamily;
 }
 
 window.DEBUG = true;