DevTools: Open Elements panel sooner on Inspect Element

third_party/WebKit/Source/devtools/front_end/ui/View.js

 // Copyright 2016 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.
 /**
  * @interface
  */
 UI.View = function() {};
 
 UI.View.prototype = {
   /**
@@ skipping 362 matching lines @@
     var resolverExtension = resolverExtensions[0];
     return resolverExtension.instance().then(
         resolver => /** @type {?UI.ViewManager._Location} */ (resolver.resolveLocation(location)));
   }
 
   /**
    * @param {function()=} revealCallback
    * @param {string=} location
    * @param {boolean=} restoreSelection
    * @param {boolean=} allowReorder
+   * @param {?string=} defaultTab
    * @return {!UI.TabbedViewLocation}
    */
-  createTabbedLocation(revealCallback, location, restoreSelection, allowReorder) {
-    return new UI.ViewManager._TabbedLocation(this, revealCallback, location, restoreSelection, allowReorder);
+  createTabbedLocation(revealCallback, location, restoreSelection, allowReorder, defaultTab) {
+    return new UI.ViewManager._TabbedLocation(
+        this, revealCallback, location, restoreSelection, allowReorder, defaultTab);
   }
 
   /**
    * @param {function()=} revealCallback
    * @param {string=} location
    * @return {!UI.ViewLocation}
    */
   createStackLocation(revealCallback, location) {
     return new UI.ViewManager._StackLocation(this, revealCallback, location);
   }
@@ skipping 161 matching lines @@
  * @implements {UI.TabbedViewLocation}
  * @unrestricted
  */
 UI.ViewManager._TabbedLocation = class extends UI.ViewManager._Location {
   /**
    * @param {!UI.ViewManager} manager
    * @param {function()=} revealCallback
    * @param {string=} location
    * @param {boolean=} restoreSelection
    * @param {boolean=} allowReorder
+   * @param {?string=} defaultTab
    */
-  constructor(manager, revealCallback, location, restoreSelection, allowReorder) {
+  constructor(manager, revealCallback, location, restoreSelection, allowReorder, defaultTab) {
     var tabbedPane = new UI.TabbedPane();
     if (allowReorder)
       tabbedPane.setAllowTabReorder(true);
 
     super(manager, tabbedPane, revealCallback);
     this._tabbedPane = tabbedPane;
     this._allowReorder = allowReorder;
 
     this._tabbedPane.addEventListener(UI.TabbedPane.Events.TabSelected, this._tabSelected, this);
     this._tabbedPane.addEventListener(UI.TabbedPane.Events.TabClosed, this._tabClosed, this);
     this._closeableTabSetting = Common.settings.createSetting(location + '-closeableTabs', {});
     this._tabOrderSetting = Common.settings.createSetting(location + '-tabOrder', {});
     this._tabbedPane.addEventListener(UI.TabbedPane.Events.TabOrderChanged, this._persistTabOrder, this);
     if (restoreSelection)
       this._lastSelectedTabSetting = Common.settings.createSetting(location + '-selectedTab', '');
+    this._defaultTab = defaultTab;
 
     /** @type {!Map.<string, !UI.View>} */
     this._views = new Map();
 
     if (location)
       this.appendApplicableItems(location);
   }
 
   /**
    * @override
@@ skipping 38 matching lines @@
       var id = view.viewId();
       this._views.set(id, view);
       view[UI.ViewManager._Location.symbol] = this;
       if (view.isTransient())
         continue;
       if (!view.isCloseable())
         this._appendTab(view);
       else if (this._closeableTabSetting.get()[id])
         this._appendTab(view);
     }
-    if (this._lastSelectedTabSetting && this._tabbedPane.hasTab(this._lastSelectedTabSetting.get()))
+    if (this._defaultTab && this._tabbedPane.hasTab(this._defaultTab))
+      this._tabbedPane.selectTab(this._defaultTab);
+    else if (this._lastSelectedTabSetting && this._tabbedPane.hasTab(this._lastSelectedTabSetting.get()))
       this._tabbedPane.selectTab(this._lastSelectedTabSetting.get());
   }
 
   /**
    * @param {!UI.ContextMenu} contextMenu
    */
   _appendTabsToMenu(contextMenu) {
     for (var view of this._views.values()) {
       var title = Common.UIString(view.title());
       contextMenu.appendItem(title, this.showView.bind(this, view));
@@ skipping 205 matching lines @@
   appendApplicableItems(locationName) {
     for (var view of this._manager._viewsForLocation(locationName))
       this.appendView(view);
   }
 };
 
 /**
  * @type {!UI.ViewManager}
  */
 UI.viewManager;