Add a TabController class to manage a TabView (with corresponding xib). Rewri...

chrome/browser/cocoa/tab_strip_controller.h

 // Copyright (c) 2009 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.
 
 #ifndef CHROME_BROWSER_COCOA_TAB_STRIP_CONTROLLER_H_
 #define CHROME_BROWSER_COCOA_TAB_STRIP_CONTROLLER_H_
 
 #import <Cocoa/Cocoa.h>
 
 class CommandUpdater;
 class LocationBar;
 @class TabStripView;
 class TabStripBridge;
 class TabStripModel;
 class TabContents;
 class ToolbarModel;
 
 // A class that handles managing the tab strip in a browser window. It uses
 // a supporting C++ bridge object to register for notifications from the
 // TabStripModel. The Obj-C part of this class handles drag and drop and all
 // the other Cocoa-y aspects.
 //
-// When a new tab is created, it loads the contents, including
-// toolbar, from a separate nib file and replaces the contentView of the
-// window. As tabs are switched, the single child of the contentView is
-// swapped around to hold the contents (toolbar and all) representing that tab.
+// When a new tab is created, we create a TabController which manages loading
+// the contents, including toolbar, from a separate nib file. This controller
+// then handles replacing the contentView of the window. As tabs are switched,
+// the single child of the contentView is swapped around to hold the contents
+// (toolbar and all) representing that tab.
 
 @interface TabStripController : NSObject {
  @private
   TabContents* currentTab_;   // weak, tab for which we're showing state
   TabStripView* tabView_;  // weak
   NSButton* newTabButton_;
   TabStripBridge* bridge_;
   TabStripModel* tabModel_;  // weak
   ToolbarModel* toolbarModel_;  // weak, one per browser
   CommandUpdater* commands_;  // weak, may be nil
   // access to the TabContentsControllers (which own the parent view
   // for the toolbar and associated tab contents) given an index. This needs
   // to be kept in the same order as the tab strip's model as we will be
   // using its index from the TabStripModelObserver calls.
-  NSMutableArray* tabControllerArray_;
+  NSMutableArray* tabContentsArray_;
+  // an array of TabControllers which manage the actual tab views. As above,
+  // this is kept in the same order as the tab strip model.
+  NSMutableArray* tabArray_;
 }
 
 // Initialize the controller with a view, model, and command updater for
 // tracking what's enabled and disabled. |commands| may be nil if no updating
 // is desired.
 - (id)initWithView:(TabStripView*)view
           tabModel:(TabStripModel*)tabModel
       toolbarModel:(ToolbarModel*)toolbarModel
           commands:(CommandUpdater*)commands;
 
@@ skipping 16 matching lines @@
 
 // Called to tell the selected tab to update its loading state.
 - (void)setIsLoading:(BOOL)isLoading;
 
 // Make the location bar the first responder, if possible.
 - (void)focusLocationBar;
 
 @end
 
 #endif  // CHROME_BROWSER_COCOA_TAB_STRIP_CONTROLLER_H_