[DevTools] Typed events and event listeners.

third_party/WebKit/Source/devtools/front_end/sources/WorkspaceMappingTip.js

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 /**
  * @unrestricted
  */
 Sources.WorkspaceMappingTip = class {
   /**
    * @param {!Sources.SourcesPanel} sourcesPanel
    * @param {!Workspace.Workspace} workspace
    */
   constructor(sourcesPanel, workspace) {
     this._sourcesPanel = sourcesPanel;
     this._workspace = workspace;
 
     this._sourcesView = this._sourcesPanel.sourcesView();
     this._workspaceInfobarDisabledSetting = Common.settings.createSetting('workspaceInfobarDisabled', false);
     this._workspaceMappingInfobarDisabledSetting =
         Common.settings.createSetting('workspaceMappingInfobarDisabled', false);
 
     if (this._workspaceInfobarDisabledSetting.get() && this._workspaceMappingInfobarDisabledSetting.get())
       return;
     this._sourcesView.addEventListener(Sources.SourcesView.Events.EditorSelected, this._editorSelected.bind(this));
-    Persistence.persistence.addEventListener(Persistence.Persistence.Events.BindingCreated, this._bindingCreated, this);
+    Persistence.persistence.addEventListener(Persistence.Persistence.BindingChangedEvent, this._bindingChanged, this);
   }
 
   /**
-   * @param {!Common.Event} event
+   * @param {!Persistence.Persistence.BindingChangedEvent} event
    */
-  _bindingCreated(event) {
-    var binding = /** @type {!Persistence.PersistenceBinding} */ (event.data);
-    if (binding.network[Sources.WorkspaceMappingTip._infobarSymbol])
-      binding.network[Sources.WorkspaceMappingTip._infobarSymbol].dispose();
-    if (binding.fileSystem[Sources.WorkspaceMappingTip._infobarSymbol])
-      binding.fileSystem[Sources.WorkspaceMappingTip._infobarSymbol].dispose();
+  _bindingChanged(event) {
+    if (!event.created)
+      return;
+    if (event.binding.network[Sources.WorkspaceMappingTip._infobarSymbol])
+      event.binding.network[Sources.WorkspaceMappingTip._infobarSymbol].dispose();
+    if (event.binding.fileSystem[Sources.WorkspaceMappingTip._infobarSymbol])
+      event.binding.fileSystem[Sources.WorkspaceMappingTip._infobarSymbol].dispose();
   }
 
   /**
    * @param {!Common.Event} event
    */
   _editorSelected(event) {
     var uiSourceCode = /** @type {!Workspace.UISourceCode} */ (event.data);
     if (this._editorSelectedTimer)
       clearTimeout(this._editorSelectedTimer);
     this._editorSelectedTimer = setTimeout(this._updateSuggestedMappingInfobar.bind(this, uiSourceCode), 3000);
@@ skipping 126 matching lines @@
     rowElement.appendChild(
         UI.createDocumentationLink('../setup/setup-workflow', Common.UIString('workspaces documentation')));
     rowElement.createTextChild('.');
     uiSourceCode[Sources.WorkspaceMappingTip._infobarSymbol] = infobar;
     uiSourceCodeFrame.attachInfobars([infobar]);
     UI.runCSSAnimationOnce(infobar.element, 'source-frame-infobar-animation');
   }
 };
 
 Sources.WorkspaceMappingTip._infobarSymbol = Symbol('infobar');