1// Copyright (c) 2012 The Chromium Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5#ifndef CHROME_BROWSER_UI_VIEWS_BOOKMARKS_BOOKMARK_MENU_CONTROLLER_VIEWS_H_
6#define CHROME_BROWSER_UI_VIEWS_BOOKMARKS_BOOKMARK_MENU_CONTROLLER_VIEWS_H_
7
8#include <set>
9
10#include "base/compiler_specific.h"
11#include "components/bookmarks/browser/base_bookmark_model_observer.h"
12#include "components/bookmarks/browser/bookmark_node_data.h"
13#include "ui/views/controls/menu/menu_delegate.h"
14
15class BookmarkBarView;
16class BookmarkMenuControllerObserver;
17class BookmarkMenuDelegate;
18class BookmarkNode;
19class Browser;
20
21namespace content {
22class PageNavigator;
23}
24
25namespace ui {
26class OSExchangeData;
27}
28
29namespace views {
30class MenuButton;
31class MenuItemView;
32class MenuRunner;
33class Widget;
34}
35
36// BookmarkMenuController is responsible for showing a menu of bookmarks,
37// each item in the menu represents a bookmark.
38// BookmarkMenuController deletes itself as necessary, although the menu can
39// be explicitly hidden by way of the Cancel method.
40class BookmarkMenuController : public BaseBookmarkModelObserver,
41                               public views::MenuDelegate {
42 public:
43  // Creates a BookmarkMenuController showing the children of |node| starting
44  // at |start_child_index|.
45  BookmarkMenuController(Browser* browser,
46                         content::PageNavigator* page_navigator,
47                         views::Widget* parent,
48                         const BookmarkNode* node,
49                         int start_child_index,
50                         bool for_drop);
51
52  void RunMenuAt(BookmarkBarView* bookmark_bar);
53
54  void clear_bookmark_bar() {
55    bookmark_bar_ = NULL;
56  }
57
58  // Hides the menu.
59  void Cancel();
60
61  // Returns the node the menu is showing for.
62  const BookmarkNode* node() const { return node_; }
63
64  // Returns the menu.
65  views::MenuItemView* menu() const;
66
67  // Returns the context menu, or NULL if the context menu isn't showing.
68  views::MenuItemView* context_menu() const;
69
70  // Sets the page navigator.
71  void SetPageNavigator(content::PageNavigator* navigator);
72
73  void set_observer(BookmarkMenuControllerObserver* observer) {
74    observer_ = observer;
75  }
76
77  // views::MenuDelegate:
78  virtual base::string16 GetTooltipText(int id,
79                                        const gfx::Point& p) const OVERRIDE;
80  virtual bool IsTriggerableEvent(views::MenuItemView* view,
81                                  const ui::Event& e) OVERRIDE;
82  virtual void ExecuteCommand(int id, int mouse_event_flags) OVERRIDE;
83  virtual bool ShouldExecuteCommandWithoutClosingMenu(
84      int id,
85      const ui::Event& e) OVERRIDE;
86  virtual bool GetDropFormats(
87      views::MenuItemView* menu,
88      int* formats,
89      std::set<ui::OSExchangeData::CustomFormat>* custom_formats) OVERRIDE;
90  virtual bool AreDropTypesRequired(views::MenuItemView* menu) OVERRIDE;
91  virtual bool CanDrop(views::MenuItemView* menu,
92                       const ui::OSExchangeData& data) OVERRIDE;
93  virtual int GetDropOperation(views::MenuItemView* item,
94                               const ui::DropTargetEvent& event,
95                               DropPosition* position) OVERRIDE;
96  virtual int OnPerformDrop(views::MenuItemView* menu,
97                            DropPosition position,
98                            const ui::DropTargetEvent& event) OVERRIDE;
99  virtual bool ShowContextMenu(views::MenuItemView* source,
100                               int id,
101                               const gfx::Point& p,
102                               ui::MenuSourceType source_type) OVERRIDE;
103  virtual void DropMenuClosed(views::MenuItemView* menu) OVERRIDE;
104  virtual bool CanDrag(views::MenuItemView* menu) OVERRIDE;
105  virtual void WriteDragData(views::MenuItemView* sender,
106                             ui::OSExchangeData* data) OVERRIDE;
107  virtual int GetDragOperations(views::MenuItemView* sender) OVERRIDE;
108  virtual views::MenuItemView* GetSiblingMenu(
109      views::MenuItemView* menu,
110      const gfx::Point& screen_point,
111      views::MenuAnchorPosition* anchor,
112      bool* has_mnemonics,
113      views::MenuButton** button) OVERRIDE;
114  virtual int GetMaxWidthForMenu(views::MenuItemView* view) OVERRIDE;
115
116  // BaseBookmarkModelObserver:
117  virtual void BookmarkModelChanged() OVERRIDE;
118
119 private:
120  // BookmarkMenuController deletes itself as necessary.
121  virtual ~BookmarkMenuController();
122
123  scoped_ptr<views::MenuRunner> menu_runner_;
124
125  scoped_ptr<BookmarkMenuDelegate> menu_delegate_;
126
127  // The node we're showing the contents of.
128  const BookmarkNode* node_;
129
130  // Data for the drop.
131  bookmarks::BookmarkNodeData drop_data_;
132
133  // The observer, may be null.
134  BookmarkMenuControllerObserver* observer_;
135
136  // Is the menu being shown for a drop?
137  bool for_drop_;
138
139  // The bookmark bar. This is only non-null if we're showing a menu item for a
140  // folder on the bookmark bar and not for drop, or if the BookmarkBarView has
141  // been destroyed before the menu.
142  BookmarkBarView* bookmark_bar_;
143
144  DISALLOW_COPY_AND_ASSIGN(BookmarkMenuController);
145};
146
147#endif  // CHROME_BROWSER_UI_VIEWS_BOOKMARKS_BOOKMARK_MENU_CONTROLLER_VIEWS_H_
148