DevTools: carefully cleanup script UISourceCodes

third_party/WebKit/Source/devtools/front_end/bindings/NetworkProject.js

 /*
  * Copyright (C) 2012 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 69 matching lines @@
     if (resourceTreeModel) {
       this._eventListeners.push(
           resourceTreeModel.addEventListener(SDK.ResourceTreeModel.Events.ResourceAdded, this._resourceAdded, this),
           resourceTreeModel.addEventListener(
               SDK.ResourceTreeModel.Events.FrameWillNavigate, this._frameWillNavigate, this),
           resourceTreeModel.addEventListener(
               SDK.ResourceTreeModel.Events.MainFrameNavigated, this._mainFrameNavigated, this),
           resourceTreeModel.addEventListener(SDK.ResourceTreeModel.Events.FrameDetached, this._frameDetached, this));
     }
 
-    var debuggerModel = target.model(SDK.DebuggerModel);
-    if (debuggerModel) {
+    this._debuggerModel = target.model(SDK.DebuggerModel);
+    if (this._debuggerModel) {
+      var runtimeModel = this._debuggerModel.runtimeModel();
       this._eventListeners.push(
-          debuggerModel.addEventListener(SDK.DebuggerModel.Events.ParsedScriptSource, this._parsedScriptSource, this),
-          debuggerModel.addEventListener(
+          runtimeModel.addEventListener(
+              SDK.RuntimeModel.Events.ExecutionContextDestroyed, this._executionContextDestroyed, this),
+          this._debuggerModel.addEventListener(
+              SDK.DebuggerModel.Events.ParsedScriptSource, this._parsedScriptSource, this),
+          this._debuggerModel.addEventListener(
               SDK.DebuggerModel.Events.FailedToParseScriptSource, this._parsedScriptSource, this));
     }
     var cssModel = target.model(SDK.CSSModel);
     if (cssModel) {
       this._eventListeners.push(
           cssModel.addEventListener(SDK.CSSModel.Events.StyleSheetAdded, this._styleSheetAdded, this),
           cssModel.addEventListener(SDK.CSSModel.Events.StyleSheetRemoved, this._styleSheetRemoved, this));
     }
     this._eventListeners.push(target.targetManager().addEventListener(
         SDK.TargetManager.Events.SuspendStateChanged, this._suspendStateChanged, this));
@@ skipping 138 matching lines @@
    * @param {!Workspace.UISourceCode} uiSourceCode
    * @param {!Common.ContentProvider} contentProvider
    * @param {?Workspace.UISourceCodeMetadata} metadata
    */
   _addUISourceCodeWithProvider(uiSourceCode, contentProvider, metadata) {
     /** @type {!Bindings.ContentProviderBasedProject} */ (uiSourceCode.project())
         .addUISourceCodeWithProvider(uiSourceCode, contentProvider, metadata);
   }
 
   /**
+   * @param {!SDK.Script} script
+   * @return {boolean}
+   */
+  _acceptsScript(script) {
+    if (!script.sourceURL || script.isLiveEdit() || (script.isInlineScript() && !script.hasSourceURL))
+      return false;
+    // Filter out embedder injected content scripts.
+    if (script.isContentScript() && !script.hasSourceURL) {
+      var parsedURL = new Common.ParsedURL(script.sourceURL);
+      if (!parsedURL.isValid)
+        return false;
+    }
+    return true;
+  }
+
+  /**
    * @param {!Common.Event} event
    */
   _parsedScriptSource(event) {
     var script = /** @type {!SDK.Script} */ (event.data);
-    if (!script.sourceURL || script.isLiveEdit() || (script.isInlineScript() && !script.hasSourceURL))
+    if (!this._acceptsScript(script))
       return;
-    // Filter out embedder injected content scripts.
-    if (script.isContentScript() && !script.hasSourceURL) {
-      var parsedURL = new Common.ParsedURL(script.sourceURL);
-      if (!parsedURL.isValid)
-        return;
-    }
     var originalContentProvider = script.originalContentProvider();
     var executionContext = script.executionContext();
     var frameId = executionContext ? executionContext.frameId || '' : '';
+    script[Bindings.NetworkProject._frameIdSymbol] = frameId;
     var uiSourceCode = this._createFile(originalContentProvider, frameId, script.isContentScript());
     uiSourceCode[Bindings.NetworkProject._scriptSymbol] = script;
     var resource = SDK.ResourceTreeModel.resourceForURL(uiSourceCode.url());
     this._addUISourceCodeWithProvider(uiSourceCode, originalContentProvider, this._resourceMetadata(resource));
   }
 
   /**
    * @param {!Common.Event} event
    */
+  _executionContextDestroyed(event) {
+    var executionContext = /** @type {!SDK.ExecutionContext} */ (event.data);
+    var scripts = this._debuggerModel.scriptsForExecutionContext(executionContext);
+    for (var script of scripts) {
+      if (!this._acceptsScript(script))
+        continue;
+      var frameId = script[Bindings.NetworkProject._frameIdSymbol];
+      this._removeFileForURL(script.contentURL(), frameId, script.isContentScript());
+    }
+  }
+
+  /**
+   * @param {!SDK.CSSStyleSheetHeader} header
+   */
+  _acceptsHeader(header) {
+    if (header.isInline && !header.hasSourceURL && header.origin !== 'inspector')
+      return false;
+    if (!header.resourceURL())
+      return false;
+    return true;
+  }
+
+  /**
+   * @param {!Common.Event} event
+   */
   _styleSheetAdded(event) {
     var header = /** @type {!SDK.CSSStyleSheetHeader} */ (event.data);
-    if (header.isInline && !header.hasSourceURL && header.origin !== 'inspector')
-      return;
-    if (!header.resourceURL())
+    if (!this._acceptsHeader(header))
       return;
 
     var originalContentProvider = header.originalContentProvider();
     var uiSourceCode = this._createFile(originalContentProvider, header.frameId, false);
     uiSourceCode[Bindings.NetworkProject._styleSheetSymbol] = header;
     var resource = SDK.ResourceTreeModel.resourceForURL(uiSourceCode.url());
     this._addUISourceCodeWithProvider(uiSourceCode, originalContentProvider, this._resourceMetadata(resource));
   }
 
   /**
    * @param {!Common.Event} event
    */
   _styleSheetRemoved(event) {
     var header = /** @type {!SDK.CSSStyleSheetHeader} */ (event.data);
-    if (header.isInline && !header.hasSourceURL && header.origin !== 'inspector')
+    if (!this._acceptsHeader(header))
       return;
-
     this._removeFileForURL(header.resourceURL(), header.frameId, false);
   }
 
   /**
    * @param {!Common.Event} event
    */
   _resourceAdded(event) {
     var resource = /** @type {!SDK.Resource} */ (event.data);
     this._addResource(resource);
   }
 
   /**
    * @param {!SDK.Resource} resource
    */
   _addResource(resource) {
     var resourceType = resource.resourceType();
     // Only load selected resource types from resources.
     if (resourceType !== Common.resourceTypes.Image && resourceType !== Common.resourceTypes.Font &&
         resourceType !== Common.resourceTypes.Document && resourceType !== Common.resourceTypes.Manifest)
       return;
 
-
     // Ignore non-images and non-fonts.
     if (resourceType === Common.resourceTypes.Image && resource.mimeType && !resource.mimeType.startsWith('image'))
       return;
     if (resourceType === Common.resourceTypes.Font && resource.mimeType && !resource.mimeType.includes('font'))
       return;
     if ((resourceType === Common.resourceTypes.Image || resourceType === Common.resourceTypes.Font) &&
         resource.contentURL().startsWith('data:'))
       return;
 
     // Never load document twice.
@@ skipping 110 matching lines @@
         Bindings.NetworkProject.projectId(header.cssModel().target(), header.frameId, false), url);
   }
 };
 
 Bindings.NetworkProject._networkProjectSymbol = Symbol('networkProject');
 Bindings.NetworkProject._resourceSymbol = Symbol('resource');
 Bindings.NetworkProject._scriptSymbol = Symbol('script');
 Bindings.NetworkProject._styleSheetSymbol = Symbol('styleSheet');
 Bindings.NetworkProject._targetSymbol = Symbol('target');
 Bindings.NetworkProject._frameSymbol = Symbol('frame');
+Bindings.NetworkProject._frameIdSymbol = Symbol('frameid');