Refactor media galleries dialogs on cocoa to extract common code

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

 // 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.
 
 #ifndef CHROME_BROWSER_UI_COCOA_EXTENSIONS_MEDIA_GALLERIES_SCAN_RESULT_DIALOG_COCOA_H_
 #define CHROME_BROWSER_UI_COCOA_EXTENSIONS_MEDIA_GALLERIES_SCAN_RESULT_DIALOG_COCOA_H_
 
 #import <Cocoa/Cocoa.h>
 
 #include "chrome/browser/media_galleries/media_galleries_scan_result_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 MediaGalleriesScanResultCocoaController;
 
 
 namespace ui {
 class MenuModel;
 }
 
 // This class displays an alert where the user selects which scan results
 // (media folders) the app (extension) should have access to.
 class MediaGalleriesScanResultDialogCocoa
     : public ConstrainedWindowMacDelegate,
-      public MediaGalleriesScanResultDialog {
+      public MediaGalleriesScanResultDialog,
+      public MediaGalleryListEntryController {
  public:
   MediaGalleriesScanResultDialogCocoa(
       MediaGalleriesScanResultDialogController* controller,
       MediaGalleriesScanResultCocoaController* delegate);
   virtual ~MediaGalleriesScanResultDialogCocoa();
 
   // Called when the user clicks the accept button.
   void OnAcceptClicked();
   // Called when the user clicks the cancel button.
   void OnCancelClicked();
-  // Called when the user toggles a gallery checkbox.
-  void OnCheckboxToggled(NSButton* checkbox);
-  // Called when the user toggles a gallery checkbox.
-  void OnFolderViewClicked(NSButton* folder_viewer_button);
 
   // MediaGalleriesScanResultDialog implementation:
   virtual void UpdateResults() OVERRIDE;
 
   // ConstrainedWindowMacDelegate implementation.
   virtual void OnConstrainedWindowClosed(
       ConstrainedWindowMac* window) OVERRIDE;
 
-  ui::MenuModel* GetContextMenu(MediaGalleryPrefId prefid);
+  // MediaGalleryListEntryController implementation.
+  virtual void OnCheckboxToggled(MediaGalleryPrefId prefId,
+                                 bool checked) OVERRIDE;
+  virtual void OnFolderViewerClicked(MediaGalleryPrefId prefId) OVERRIDE;
+  virtual ui::MenuModel* GetContextMenu(MediaGalleryPrefId prefid) OVERRIDE;
 
  private:
   friend class MediaGalleriesScanResultDialogCocoaTest;
 
-  void UpdateScanResultCheckbox(const MediaGalleryPrefInfo& scan_result,
-                                bool checked,
-                                CGFloat y_pos);
-
   void InitDialogControls();
-  CGFloat CreateCheckboxes(
-      CGFloat y_pos,
-      const MediaGalleriesScanResultDialogController::OrderedScanResults&
-          scan_results);
+  CGFloat CreateCheckboxes();
 
   // MediaGalleriesScanResultDialog implementation:
   virtual void AcceptDialogForTesting() OVERRIDE;
 
   MediaGalleriesScanResultDialogController* 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<MediaGalleriesScanResultCocoaController>
       cocoa_controller_;
 
   DISALLOW_COPY_AND_ASSIGN(MediaGalleriesScanResultDialogCocoa);
 };
 
 #endif  // CHROME_BROWSER_UI_COCOA_EXTENSIONS_MEDIA_GALLERIES_SCAN_RESULT_DIALOG_COCOA_H_