browser_tab_strip_controller.h revision 7d4cd473f85ac64c3747c96c277f9e506a0d2246 
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_TABS_BROWSER_TAB_STRIP_CONTROLLER_H_
6#define CHROME_BROWSER_UI_VIEWS_TABS_BROWSER_TAB_STRIP_CONTROLLER_H_
7
8#include "base/compiler_specific.h"
9#include "base/memory/scoped_ptr.h"
10#include "base/prefs/pref_change_registrar.h"
11#include "chrome/browser/ui/tabs/hover_tab_selector.h"
12#include "chrome/browser/ui/tabs/tab_strip_model.h"
13#include "chrome/browser/ui/views/frame/immersive_mode_controller.h"
14#include "chrome/browser/ui/views/tabs/tab_strip_controller.h"
15
16class Browser;
17class Tab;
18class TabStrip;
19struct TabRendererData;
20
21namespace content {
22class WebContents;
23}
24
25namespace ui {
26class ListSelectionModel;
27}
28
29// An implementation of TabStripController that sources data from the
30// WebContentses in a TabStripModel.
31class BrowserTabStripController : public TabStripController,
32                                  public TabStripModelObserver {
33 public:
34  BrowserTabStripController(Browser* browser, TabStripModel* model);
35  virtual ~BrowserTabStripController();
36
37  void InitFromModel(TabStrip* tabstrip);
38
39  TabStripModel* model() const { return model_; }
40
41  bool IsCommandEnabledForTab(TabStripModel::ContextMenuCommand command_id,
42                              Tab* tab) const;
43  void ExecuteCommandForTab(TabStripModel::ContextMenuCommand command_id,
44                            Tab* tab);
45  bool IsTabPinned(Tab* tab) const;
46
47  // TabStripController implementation:
48  virtual const ui::ListSelectionModel& GetSelectionModel() OVERRIDE;
49  virtual int GetCount() const OVERRIDE;
50  virtual bool IsValidIndex(int model_index) const OVERRIDE;
51  virtual bool IsActiveTab(int model_index) const OVERRIDE;
52  virtual int GetActiveIndex() const OVERRIDE;
53  virtual bool IsTabSelected(int model_index) const OVERRIDE;
54  virtual bool IsTabPinned(int model_index) const OVERRIDE;
55  virtual bool IsNewTabPage(int model_index) const OVERRIDE;
56  virtual void SelectTab(int model_index) OVERRIDE;
57  virtual void ExtendSelectionTo(int model_index) OVERRIDE;
58  virtual void ToggleSelected(int model_index) OVERRIDE;
59  virtual void AddSelectionFromAnchorTo(int model_index) OVERRIDE;
60  virtual void CloseTab(int model_index, CloseTabSource source) OVERRIDE;
61  virtual void ShowContextMenuForTab(Tab* tab,
62                                     const gfx::Point& p,
63                                     ui::MenuSourceType source_type) OVERRIDE;
64  virtual void UpdateLoadingAnimations() OVERRIDE;
65  virtual int HasAvailableDragActions() const OVERRIDE;
66  virtual void OnDropIndexUpdate(int index, bool drop_before) OVERRIDE;
67  virtual void PerformDrop(bool drop_before,
68                           int index,
69                           const GURL& url) OVERRIDE;
70  virtual bool IsCompatibleWith(TabStrip* other) const OVERRIDE;
71  virtual void CreateNewTab() OVERRIDE;
72  virtual bool IsIncognito() OVERRIDE;
73  virtual void LayoutTypeMaybeChanged() OVERRIDE;
74  virtual void OnStartedDraggingTabs() OVERRIDE;
75  virtual void OnStoppedDraggingTabs() OVERRIDE;
76
77  // TabStripModelObserver implementation:
78  virtual void TabInsertedAt(content::WebContents* contents,
79                             int model_index,
80                             bool is_active) OVERRIDE;
81  virtual void TabDetachedAt(content::WebContents* contents,
82                             int model_index) OVERRIDE;
83  virtual void TabSelectionChanged(
84      TabStripModel* tab_strip_model,
85      const ui::ListSelectionModel& old_model) OVERRIDE;
86  virtual void TabMoved(content::WebContents* contents,
87                        int from_model_index,
88                        int to_model_index) OVERRIDE;
89  virtual void TabChangedAt(content::WebContents* contents,
90                            int model_index,
91                            TabChangeType change_type) OVERRIDE;
92  virtual void TabReplacedAt(TabStripModel* tab_strip_model,
93                             content::WebContents* old_contents,
94                             content::WebContents* new_contents,
95                             int model_index) OVERRIDE;
96  virtual void TabPinnedStateChanged(content::WebContents* contents,
97                                     int model_index) OVERRIDE;
98  virtual void TabMiniStateChanged(content::WebContents* contents,
99                                   int model_index) OVERRIDE;
100  virtual void TabBlockedStateChanged(content::WebContents* contents,
101                                      int model_index) OVERRIDE;
102
103 protected:
104  // The context in which SetTabRendererDataFromModel is being called.
105  enum TabStatus {
106    NEW_TAB,
107    EXISTING_TAB
108  };
109
110  // Sets the TabRendererData from the TabStripModel.
111  virtual void SetTabRendererDataFromModel(content::WebContents* contents,
112                                           int model_index,
113                                           TabRendererData* data,
114                                           TabStatus tab_status);
115
116  Profile* profile() const { return model_->profile(); }
117
118  const TabStrip* tabstrip() const { return tabstrip_; }
119
120  const Browser* browser() const { return browser_; }
121
122 private:
123  class TabContextMenuContents;
124
125  // Invokes tabstrip_->SetTabData.
126  void SetTabDataAt(content::WebContents* web_contents, int model_index);
127
128  void StartHighlightTabsForCommand(
129      TabStripModel::ContextMenuCommand command_id,
130      Tab* tab);
131  void StopHighlightTabsForCommand(
132      TabStripModel::ContextMenuCommand command_id,
133      Tab* tab);
134
135  // Adds a tab.
136  void AddTab(content::WebContents* contents, int index, bool is_active);
137
138  // Resets the tabstrips layout type from prefs.
139  void UpdateLayoutType();
140
141  TabStripModel* model_;
142
143  TabStrip* tabstrip_;
144
145  // Non-owning pointer to the browser which is using this controller.
146  Browser* browser_;
147
148  // If non-NULL it means we're showing a menu for the tab.
149  scoped_ptr<TabContextMenuContents> context_menu_contents_;
150
151  // Helper for performing tab selection as a result of dragging over a tab.
152  HoverTabSelector hover_tab_selector_;
153
154  // Forces the tabs to use the regular (non-immersive) style and the
155  // top-of-window views to be revealed when the user is dragging |tabstrip|'s
156  // tabs.
157  scoped_ptr<ImmersiveRevealedLock> immersive_reveal_lock_;
158
159  PrefChangeRegistrar local_pref_registrar_;
160
161  DISALLOW_COPY_AND_ASSIGN(BrowserTabStripController);
162};
163
164#endif  // CHROME_BROWSER_UI_VIEWS_TABS_BROWSER_TAB_STRIP_CONTROLLER_H_
165