1// Copyright (c) 2011 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_TAB_CONTROLLER_H_
6#define CHROME_BROWSER_UI_VIEWS_TABS_TAB_CONTROLLER_H_
7#pragma once
8
9class BaseTab;
10
11namespace gfx {
12class Point;
13}
14namespace views {
15class MouseEvent;
16}
17
18// Controller for tabs.
19class TabController {
20 public:
21  // Selects the tab.
22  virtual void SelectTab(BaseTab* tab) = 0;
23
24  // Extends the selection from the anchor to |tab|.
25  virtual void ExtendSelectionTo(BaseTab* tab) = 0;
26
27  // Toggles whether |tab| is selected.
28  virtual void ToggleSelected(BaseTab* tab) = 0;
29
30  // Adds the selection the anchor to |tab|.
31  virtual void AddSelectionFromAnchorTo(BaseTab* tab) = 0;
32
33  // Closes the tab.
34  virtual void CloseTab(BaseTab* tab) = 0;
35
36  // Shows a context menu for the tab at the specified point in screen coords.
37  virtual void ShowContextMenuForTab(BaseTab* tab, const gfx::Point& p) = 0;
38
39  // Returns true if |tab| is the active tab. The active tab is the one whose
40  // content is shown in the browser.
41  virtual bool IsActiveTab(const BaseTab* tab) const = 0;
42
43  // Returns true if the specified Tab is selected.
44  virtual bool IsTabSelected(const BaseTab* tab) const = 0;
45
46  // Returns true if the specified Tab is pinned.
47  virtual bool IsTabPinned(const BaseTab* tab) const = 0;
48
49  // Returns true if the specified Tab is closeable.
50  virtual bool IsTabCloseable(const BaseTab* tab) const = 0;
51
52  // Potentially starts a drag for the specified Tab.
53  virtual void MaybeStartDrag(BaseTab* tab, const views::MouseEvent& event) = 0;
54
55  // Continues dragging a Tab.
56  virtual void ContinueDrag(const views::MouseEvent& event) = 0;
57
58  // Ends dragging a Tab. |canceled| is true if the drag was aborted in a way
59  // other than the user releasing the mouse. Returns whether the tab has been
60  // destroyed.
61  virtual bool EndDrag(bool canceled) = 0;
62
63  // Returns the tab that contains the specified coordinates, in terms of |tab|,
64  // or NULL if there is no tab that contains the specified point.
65  virtual BaseTab* GetTabAt(BaseTab* tab,
66                            const gfx::Point& tab_in_tab_coordinates) = 0;
67
68 protected:
69  virtual ~TabController() {}
70};
71
72#endif  // CHROME_BROWSER_UI_VIEWS_TABS_TAB_CONTROLLER_H_
73