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// Copyright 2013 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_VIEWS_TOOLBAR_WRENCH_MENU_H_
#define CHROME_BROWSER_UI_VIEWS_TOOLBAR_WRENCH_MENU_H_
#include <map>
#include <utility>
#include "base/memory/scoped_ptr.h"
#include "base/observer_list.h"
#include "base/time/time.h"
#include "base/timer/elapsed_timer.h"
#include "components/bookmarks/browser/base_bookmark_model_observer.h"
#include "content/public/browser/notification_observer.h"
#include "content/public/browser/notification_registrar.h"
#include "ui/base/models/menu_model.h"
#include "ui/views/controls/menu/menu_delegate.h"
class BookmarkMenuDelegate;
class Browser;
class WrenchMenuObserver;
namespace ui {
class NativeTheme;
}
namespace views {
class MenuButton;
struct MenuConfig;
class MenuItemView;
class MenuRunner;
class View;
} // namespace views
// WrenchMenu adapts the WrenchMenuModel to view's menu related classes.
class WrenchMenu : public views::MenuDelegate,
public bookmarks::BaseBookmarkModelObserver,
public content::NotificationObserver {
public:
enum RunFlags {
// Indicates that the menu was opened for a drag-and-drop operation.
FOR_DROP = 1 << 0,
};
WrenchMenu(Browser* browser, int run_flags);
~WrenchMenu() override;
void Init(ui::MenuModel* model);
// Shows the menu relative to the specified view.
void RunMenu(views::MenuButton* host);
// Closes the menu if it is open, otherwise does nothing.
void CloseMenu();
// Whether the menu is currently visible to the user.
bool IsShowing();
bool for_drop() const { return (run_flags_ & FOR_DROP) != 0; }
void AddObserver(WrenchMenuObserver* observer);
void RemoveObserver(WrenchMenuObserver* observer);
// MenuDelegate overrides:
const gfx::FontList* GetLabelFontList(int command_id) const override;
bool GetShouldUseDisabledEmphasizedForegroundColor(
int command_id) const override;
base::string16 GetTooltipText(int command_id,
const gfx::Point& p) const override;
bool IsTriggerableEvent(views::MenuItemView* menu,
const ui::Event& e) override;
bool GetDropFormats(
views::MenuItemView* menu,
int* formats,
std::set<ui::OSExchangeData::CustomFormat>* custom_formats) override;
bool AreDropTypesRequired(views::MenuItemView* menu) override;
bool CanDrop(views::MenuItemView* menu,
const ui::OSExchangeData& data) override;
int GetDropOperation(views::MenuItemView* item,
const ui::DropTargetEvent& event,
DropPosition* position) override;
int OnPerformDrop(views::MenuItemView* menu,
DropPosition position,
const ui::DropTargetEvent& event) override;
bool ShowContextMenu(views::MenuItemView* source,
int command_id,
const gfx::Point& p,
ui::MenuSourceType source_type) override;
bool CanDrag(views::MenuItemView* menu) override;
void WriteDragData(views::MenuItemView* sender,
ui::OSExchangeData* data) override;
int GetDragOperations(views::MenuItemView* sender) override;
int GetMaxWidthForMenu(views::MenuItemView* menu) override;
bool IsItemChecked(int command_id) const override;
bool IsCommandEnabled(int command_id) const override;
void ExecuteCommand(int command_id, int mouse_event_flags) override;
bool GetAccelerator(int command_id,
ui::Accelerator* accelerator) const override;
void WillShowMenu(views::MenuItemView* menu) override;
void WillHideMenu(views::MenuItemView* menu) override;
bool ShouldCloseOnDragComplete() override;
// bookmarks::BaseBookmarkModelObserver overrides:
void BookmarkModelChanged() override;
// content::NotificationObserver overrides:
void Observe(int type,
const content::NotificationSource& source,
const content::NotificationDetails& details) override;
private:
class CutCopyPasteView;
class RecentTabsMenuModelDelegate;
class ZoomView;
typedef std::pair<ui::MenuModel*,int> Entry;
typedef std::map<int,Entry> CommandIDToEntry;
// Populates |parent| with all the child menus in |model|. Recursively invokes
// |PopulateMenu| for any submenu.
void PopulateMenu(views::MenuItemView* parent,
ui::MenuModel* model);
// Adds a new menu item to |parent| at |menu_index| to represent the item in
// |model| at |model_index|:
// - |menu_index|: position in |parent| to add the new item.
// - |model_index|: position in |model| to retrieve information about the
// new menu item.
// The returned item's MenuItemView::GetCommand() is the same as that of
// |model|->GetCommandIdAt(|model_index|).
views::MenuItemView* AddMenuItem(views::MenuItemView* parent,
int menu_index,
ui::MenuModel* model,
int model_index,
ui::MenuModel::ItemType menu_type);
// Invoked from the cut/copy/paste menus. Cancels the current active menu and
// activates the menu item in |model| at |index|.
void CancelAndEvaluate(ui::MenuModel* model, int index);
// Creates the bookmark menu if necessary. Does nothing if already created or
// the bookmark model isn't loaded.
void CreateBookmarkMenu();
// Returns the index of the MenuModel/index pair representing the |command_id|
// in |command_id_to_entry_|.
int ModelIndexFromCommandId(int command_id) const;
// The views menu. Owned by |menu_runner_|.
views::MenuItemView* root_;
scoped_ptr<views::MenuRunner> menu_runner_;
// Maps from the command ID in model to the model/index pair the item came
// from.
CommandIDToEntry command_id_to_entry_;
// Browser the menu is being shown for.
Browser* browser_;
// |CancelAndEvaluate| sets |selected_menu_model_| and |selected_index_|.
// If |selected_menu_model_| is non-null after the menu completes
// ActivatedAt is invoked. This is done so that ActivatedAt isn't invoked
// while the message loop is nested.
ui::MenuModel* selected_menu_model_;
int selected_index_;
// Used for managing the bookmark menu items.
scoped_ptr<BookmarkMenuDelegate> bookmark_menu_delegate_;
// Menu corresponding to IDC_BOOKMARKS_MENU.
views::MenuItemView* bookmark_menu_;
// Menu corresponding to IDC_FEEDBACK.
views::MenuItemView* feedback_menu_item_;
// Used for managing "Recent tabs" menu items.
scoped_ptr<RecentTabsMenuModelDelegate> recent_tabs_menu_model_delegate_;
content::NotificationRegistrar registrar_;
// The bit mask of RunFlags.
const int run_flags_;
ObserverList<WrenchMenuObserver> observer_list_;
// Records the time from when menu opens to when the user selects a menu item.
base::ElapsedTimer menu_opened_timer_;
DISALLOW_COPY_AND_ASSIGN(WrenchMenu);
};
#endif // CHROME_BROWSER_UI_VIEWS_TOOLBAR_WRENCH_MENU_H_
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