[DevTools] Introduce typed events.

third_party/WebKit/Source/devtools/front_end/resources/ResourcesPanel.js

 /*
  * Copyright (C) 2007, 2008, 2010 Apple Inc.  All rights reserved.
  * Copyright (C) 2009 Joseph Pecoraro
  * Copyright (C) 2013 Samsung Electronics. All rights reserved.
  *
  * 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 116 matching lines @@
   /**
    * @override
    * @param {!SDK.Target} target
    */
   targetAdded(target) {
     if (this._target)
       return;
     this._target = target;
     this._databaseModel = Resources.DatabaseModel.fromTarget(target);
 
-    this._databaseModel.addEventListener(Resources.DatabaseModel.Events.DatabaseAdded, this._databaseAdded, this);
-    this._databaseModel.addEventListener(Resources.DatabaseModel.Events.DatabasesRemoved, this._resetWebSQL, this);
+    this._databaseModel.on(Resources.DatabaseModel.DatabaseAddedEvent, this._databaseAdded, this);
+    this._databaseModel.on(Resources.DatabaseModel.DatabasesRemovedEvent, this._resetWebSQL, this);
 
     var resourceTreeModel = SDK.ResourceTreeModel.fromTarget(target);
     if (!resourceTreeModel)
       return;
 
     if (resourceTreeModel.cachedResourcesLoaded())
       this._initialize();
 
     resourceTreeModel.addEventListener(SDK.ResourceTreeModel.Events.CachedResourcesLoaded, this._initialize, this);
     resourceTreeModel.addEventListener(
         SDK.ResourceTreeModel.Events.WillLoadCachedResources, this._resetWithFrames, this);
   }
 
   /**
    * @override
    * @param {!SDK.Target} target
    */
   targetRemoved(target) {
     if (target !== this._target)
       return;
     delete this._target;
 
     var resourceTreeModel = SDK.ResourceTreeModel.fromTarget(target);
     if (resourceTreeModel) {
       resourceTreeModel.removeEventListener(SDK.ResourceTreeModel.Events.CachedResourcesLoaded, this._initialize, this);
       resourceTreeModel.removeEventListener(
           SDK.ResourceTreeModel.Events.WillLoadCachedResources, this._resetWithFrames, this);
     }
-    this._databaseModel.removeEventListener(Resources.DatabaseModel.Events.DatabaseAdded, this._databaseAdded, this);
-    this._databaseModel.removeEventListener(Resources.DatabaseModel.Events.DatabasesRemoved, this._resetWebSQL, this);
+    this._databaseModel.off(Resources.DatabaseModel.DatabaseAddedEvent, this._databaseAdded, this);
+    this._databaseModel.off(Resources.DatabaseModel.DatabasesRemovedEvent, this._resetWebSQL, this);
 
     this._resetWithFrames();
   }
 
   /**
    * @override
    */
   focus() {
     this._sidebarTree.focus();
   }
@@ skipping 196 matching lines @@
     var frameTreeElement = this._treeElementForFrameId[frameId];
     if (frameTreeElement)
       frameTreeElement.frameNavigated(frame);
 
     var applicationCacheFrameTreeElement = this._applicationCacheFrameElements[frameId];
     if (applicationCacheFrameTreeElement)
       applicationCacheFrameTreeElement.frameNavigated(frame);
   }
 
   /**
-   * @param {!Common.Event} event
+   * @param {!Resources.DatabaseModel.DatabaseAddedEvent} event
    */
   _databaseAdded(event) {
-    var database = /** @type {!Resources.Database} */ (event.data);
-    this._addDatabase(database);
-  }
-
-  /**
-   * @param {!Resources.Database} database
-   */
-  _addDatabase(database) {
-    var databaseTreeElement = new Resources.DatabaseTreeElement(this, database);
-    this._databaseTreeElements.set(database, databaseTreeElement);
+    var databaseTreeElement = new Resources.DatabaseTreeElement(this, event.database);
+    this._databaseTreeElements.set(event.database, databaseTreeElement);
     this.databasesListTreeElement.appendChild(databaseTreeElement);
   }
 
   addDocumentURL(url) {
     var parsedURL = url.asParsedURL();
     if (!parsedURL)
       return;
 
     var domain = parsedURL.securityOrigin();
     if (!this._domains[domain]) {
@@ skipping 1642 matching lines @@
 
     this.element.classList.add('storage-view');
     this._emptyWidget = new UI.EmptyWidget('');
     this._emptyWidget.show(this.element);
   }
 
   setText(text) {
     this._emptyWidget.text = text;
   }
 };