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bookmark_context_menu_controller.h

// Copyright (c) 2010 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_BOOKMARKS_BOOKMARK_CONTEXT_MENU_CONTROLLER_H_
#define CHROME_BROWSER_BOOKMARKS_BOOKMARK_CONTEXT_MENU_CONTROLLER_H_

#include <vector>

#include "app/menus/simple_menu_model.h"
#include "base/basictypes.h"
#include "chrome/browser/bookmarks/base_bookmark_model_observer.h"
#include "gfx/native_widget_types.h"

class Browser;
class PageNavigator;
class Profile;

// An interface implemented by an object that performs actions on the actual
// menu for the controller.
class BookmarkContextMenuControllerDelegate {
 public:
  virtual ~BookmarkContextMenuControllerDelegate() {}

  // Closes the bookmark context menu.
  virtual void CloseMenu() = 0;

  // Sent before any command from the menu is executed.
  virtual void WillExecuteCommand() {}

  // Sent after any command from the menu is executed.
  virtual void DidExecuteCommand() {}
};

// BookmarkContextMenuController creates and manages state for the context menu
// shown for any bookmark item.
class BookmarkContextMenuController : public BaseBookmarkModelObserver,
                                      public menus::SimpleMenuModel::Delegate {
 public:
  // Creates the bookmark context menu.
  // |profile| is used for opening urls as well as enabling 'open incognito'.
  // |browser| is used to determine the PageNavigator and may be null.
  // |navigator| is used if |browser| is null, and is provided for testing.
  // |parent| is the parent for newly created nodes if |selection| is empty.
  // |selection| is the nodes the context menu operates on and may be empty.
  BookmarkContextMenuController(
      gfx::NativeWindow parent_window,
      BookmarkContextMenuControllerDelegate* delegate,
      Profile* profile,
      PageNavigator* navigator,
      const BookmarkNode* parent,
      const std::vector<const BookmarkNode*>& selection);
  virtual ~BookmarkContextMenuController();

  void BuildMenu();

  menus::SimpleMenuModel* menu_model() const { return menu_model_.get(); }

  // menus::SimpleMenuModel::Delegate implementation:
  virtual bool IsCommandIdChecked(int command_id) const;
  virtual bool IsCommandIdEnabled(int command_id) const;
  virtual bool GetAcceleratorForCommandId(int command_id,
                                          menus::Accelerator* accelerator) {
    return false;
  }
  virtual void ExecuteCommand(int command_id);

  // Accessors:
  Profile* profile() const { return profile_; }
  PageNavigator* navigator() const { return navigator_; }

 private:
  // Adds a IDS_* style command to the menu.
  void AddItem(int id);
  // Adds a IDS_* style command to the menu with a different localized string.
  void AddItem(int id, int localization_id);
  // Adds a separator to the menu.
  void AddSeparator();
  // Adds a checkable item to the menu.
  void AddCheckboxItem(int id);

  // Overridden from BaseBookmarkModelObserver:
  // Any change to the model results in closing the menu.
  virtual void BookmarkModelChanged();

  // Returns true if selection_ has at least one bookmark of type url.
  bool HasURLs() const;

  gfx::NativeWindow parent_window_;
  BookmarkContextMenuControllerDelegate* delegate_;
  Profile* profile_;
  PageNavigator* navigator_;
  const BookmarkNode* parent_;
  std::vector<const BookmarkNode*> selection_;
  BookmarkModel* model_;
  scoped_ptr<menus::SimpleMenuModel> menu_model_;

  DISALLOW_COPY_AND_ASSIGN(BookmarkContextMenuController);
};

#endif  // CHROME_BROWSER_BOOKMARKS_BOOKMARK_CONTEXT_MENU_CONTROLLER_H_

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