Cocoa: Implement media gallery dialog

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 "chrome/browser/media_gallery/media_galleries_dialog_controller.h"
+#import "chrome/browser/ui/cocoa/constrained_window_mac.h"
+
+@class MediaGalleriesCocoaController;
+
+namespace chrome {
+
+// This class displays an alert that can be used to grant permission for
+// extensions to access a gallery (media folders).
+class MediaGalleriesDialogCocoa :
+    public ConstrainedWindowMacDelegateSystemSheet,
+    public MediaGalleriesDialog {
+ public:
+  MediaGalleriesDialogCocoa(
+      MediaGalleriesDialogController* controller,
+      MediaGalleriesCocoaController* delegate);
+  virtual ~MediaGalleriesDialogCocoa();
+
+  // Called when the user clicks the Add Gallery button.
+  void OnAddFolderClicked();
+  // Called when the user toggles a gallery checkbox.
+  void OnCheckboxToggled(NSButton* checkbox);
+  // Called when the alert closes.
+  void SheetDidEnd(NSInteger result);
+
+  // MediaGalleriesDialog implementation:
+  virtual void UpdateGallery(const MediaGalleryPrefInfo* gallery,
+                             bool permitted) OVERRIDE;
+
+  // ConstrainedWindowMacDelegateSystemSheet implementation.
+  virtual void DeleteDelegate() OVERRIDE;
+
+ private:
+  void UpdateGalleryCheckbox(NSButton* checkbox,
+                             const MediaGalleryPrefInfo* gallery,
+                             bool permitted);
+  void UpdateCheckboxContainerFrame();
+
+  MediaGalleriesDialogController* controller_;  // weak
+  ConstrainedWindow* window_;  // weak
+
+  // True if the user has pressed accept.
+  bool accepted_;
+
+  // List of checkboxes ordered from bottom to top.
+  scoped_nsobject<NSMutableArray> checkboxes_;
+
+  // Container view for checkboxes.
+  scoped_nsobject<NSView> checkbox_container_;
+
+  // The alert that the dialog is being displayed as.
+  scoped_nsobject<NSAlert> alert_;
+
+  // An Objective-C class to route callbacks from Cocoa code.
+  scoped_nsobject<MediaGalleriesCocoaController> cocoa_controller_;
+
+  DISALLOW_COPY_AND_ASSIGN(MediaGalleriesDialogCocoa);
+};
+
+}  // namespace chrome
+
+#endif  // CHROME_BROWSER_UI_COCOA_EXTENSIONS_MEDIA_GALLERIES_DIALOG_COCOA_H_