Refactor media galleries dialogs on cocoa to extract common code

chrome/browser/ui/cocoa/extensions/media_galleries_dialog_cocoa.h

 // Copyright (c) 2012 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_UI_COCOA_EXTENSIONS_MEDIA_GALLERIES_DIALOG_COCOA_H_
 #define CHROME_BROWSER_UI_COCOA_EXTENSIONS_MEDIA_GALLERIES_DIALOG_COCOA_H_
 
 #import <Cocoa/Cocoa.h>
 
 #include "base/gtest_prod_util.h"
 #include "chrome/browser/media_galleries/media_galleries_dialog_controller.h"
 #import "chrome/browser/ui/cocoa/constrained_window/constrained_window_mac.h"
+#import "chrome/browser/ui/cocoa/extensions/media_gallery_list_entry_view.h"
 
 @class ConstrainedWindowAlert;
 @class MediaGalleriesCocoaController;
 
 class MediaGalleriesDialogBrowserTest;
 class MediaGalleriesDialogTest;
 
 namespace ui {
 class MenuModel;
 }
 
 // This class displays an alert that can be used to grant permission for
 // extensions to access a gallery (media folders).
 class MediaGalleriesDialogCocoa : public ConstrainedWindowMacDelegate,
-                                  public MediaGalleriesDialog {
+                                  public MediaGalleriesDialog,
+                                  public MediaGalleryListEntryController {
  public:
   MediaGalleriesDialogCocoa(
       MediaGalleriesDialogController* controller,
       MediaGalleriesCocoaController* delegate);
   virtual ~MediaGalleriesDialogCocoa();
 
   // Called when the user clicks the accept button.
   void OnAcceptClicked();
   // Called when the user clicks the cancel button.
   void OnCancelClicked();
   // Called when the user clicks the Add Gallery button.
   void OnAddFolderClicked();
-  // Called when the user toggles a gallery checkbox.
-  void OnCheckboxToggled(NSButton* checkbox);
 
   // MediaGalleriesDialog implementation:
   virtual void UpdateGalleries() OVERRIDE;
 
   // ConstrainedWindowMacDelegate implementation.
   virtual void OnConstrainedWindowClosed(
       ConstrainedWindowMac* window) OVERRIDE;
 
-  ui::MenuModel* GetContextMenu(GalleryDialogId gallery_id);
+  // MediaGalleryListEntryController implementation.
+  virtual void OnCheckboxToggled(GalleryDialogId gallery_id,
+                                 bool checked) OVERRIDE;
+  virtual ui::MenuModel* GetContextMenu(GalleryDialogId gallery_id) OVERRIDE;
 
  private:
   FRIEND_TEST_ALL_PREFIXES(MediaGalleriesDialogBrowserTest, Close);
   FRIEND_TEST_ALL_PREFIXES(MediaGalleriesDialogTest, InitializeCheckboxes);
   FRIEND_TEST_ALL_PREFIXES(MediaGalleriesDialogTest, ToggleCheckboxes);
   FRIEND_TEST_ALL_PREFIXES(MediaGalleriesDialogTest, UpdateAdds);
   FRIEND_TEST_ALL_PREFIXES(MediaGalleriesDialogTest, ForgetDeletes);
 
   void UpdateGalleryCheckbox(
       const MediaGalleriesDialogController::GalleryPermission& gallery,
       CGFloat y_pos);
 
   void InitDialogControls();
   CGFloat CreateAddFolderButton();
   CGFloat CreateCheckboxes(
       CGFloat y_pos,
       const MediaGalleriesDialogController::GalleryPermissionsVector&
           permissions);
   CGFloat CreateCheckboxSeparator(CGFloat y_pos);
 
   MediaGalleriesDialogController* controller_;  // weak
   scoped_ptr<ConstrainedWindowMac> window_;
 
   // The alert that the dialog is being displayed as.
   base::scoped_nsobject<ConstrainedWindowAlert> alert_;
 
   // True if the user has pressed accept.
   bool accepted_;
 
-  // List of checkboxes ordered from bottom to top.
-  base::scoped_nsobject<NSMutableArray> checkboxes_;
-
   // Container view for checkboxes.
   base::scoped_nsobject<NSView> checkbox_container_;
 
   // Container view for the main dialog contents.
   base::scoped_nsobject<NSBox> main_container_;
 
   // An Objective-C class to route callbacks from Cocoa code.
   base::scoped_nsobject<MediaGalleriesCocoaController> cocoa_controller_;
 
   DISALLOW_COPY_AND_ASSIGN(MediaGalleriesDialogCocoa);
 };
 
 #endif  // CHROME_BROWSER_UI_COCOA_EXTENSIONS_MEDIA_GALLERIES_DIALOG_COCOA_H_