DevTools: Remember the last focused widget.

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

 /*
  * Copyright (C) 2008 Apple Inc. All Rights Reserved.
  * Copyright (C) 2011 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:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 63 matching lines @@
     navigatorMenuButton.setTitle(WebInspector.UIString("More options"));
     navigatorToolbar.appendToolbarItem(navigatorMenuButton);
     tabbedPane.appendAfterTabStrip(navigatorToolbar.element);
     this.editorView.setSidebarWidget(tabbedPane);
 
     this._sourcesView = new WebInspector.SourcesView();
     this._sourcesView.addEventListener(WebInspector.SourcesView.Events.EditorSelected, this._editorSelected.bind(this));
     this._sourcesView.addEventListener(WebInspector.SourcesView.Events.EditorClosed, this._editorClosed.bind(this));
     this._sourcesView.registerShortcuts(this.registerShortcuts.bind(this));
     this.editorView.setMainWidget(this._sourcesView);
+    this._sourcesView.makeDefaultFocused();
     this._editorChanged(this._sourcesView.currentUISourceCode());
 
     this._threadsSidebarPane = null;
     this._watchSidebarPane = /** @type {!WebInspector.View} */ (WebInspector.viewManager.view("sources.watch"));
     // TODO: Force installing listeners from the model, not the UI.
     self.runtime.sharedInstance(WebInspector.XHRBreakpointsSidebarPane);
     this._callstackPane = self.runtime.sharedInstance(WebInspector.CallStackSidebarPane);
     this._callstackPane.registerShortcuts(this.registerShortcuts.bind(this));
 
     this._installDebuggerSidebarController();
@@ skipping 21 matching lines @@
     WebInspector.targetManager.observeTargets(this);
 }
 
 WebInspector.SourcesPanel._lastModificationTimeout = 200;
 
 WebInspector.SourcesPanel.minToolbarWidth = 215;
 
 WebInspector.SourcesPanel.prototype = {
     /**
      * @override
-     */
-    focus: function()
-    {
-        this._sourcesView.focus();

[pfeldman, 2016/09/08 00:53:50]

Did we only have one?

[einbinder, 2016/09/09 01:32:16]

For now. There are some places where we don't set focus at all and we should,
and some places where we set focus explicitly and we should do this instead. I
haven't tracked them all down yet.

-    },
-
-    /**
-     * @override
      * @param {!WebInspector.Target} target
      */
     targetAdded: function(target)
     {
         var hasThreads = WebInspector.targetManager.targets(WebInspector.Target.Capability.JS).length > 1;
         if (hasThreads && !this._threadsSidebarPane) {
             this._threadsSidebarPane = /** @type {!WebInspector.View} */ (WebInspector.viewManager.view("sources.threads"));
             if (this._sidebarPaneStack) {
                 this._sidebarPaneStack.showView(this._threadsSidebarPane, this._splitWidget.isVertical() ? this._watchSidebarPane : this._callstackPane);
             }
@@ skipping 1232 matching lines @@
     __proto__: WebInspector.VBox.prototype
 }
 
 /**
  * @return {boolean}
  */
 WebInspector.SourcesPanel.WrapperView.isShowing = function()
 {
     return !!WebInspector.SourcesPanel.WrapperView._instance && WebInspector.SourcesPanel.WrapperView._instance.isShowing();
 }