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1 // Copyright 2014 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 ASH_COMMON_SYSTEM_OVERVIEW_OVERVIEW_BUTTON_TRAY_H_ | |
6 #define ASH_COMMON_SYSTEM_OVERVIEW_OVERVIEW_BUTTON_TRAY_H_ | |
7 | |
8 #include "ash/ash_export.h" | |
9 #include "ash/common/session/session_state_observer.h" | |
10 #include "ash/common/shell_observer.h" | |
11 #include "ash/common/system/tray/tray_background_view.h" | |
12 #include "base/macros.h" | |
13 | |
14 namespace views { | |
15 class ImageView; | |
16 } | |
17 | |
18 namespace ash { | |
19 | |
20 // Status area tray for showing a toggle for Overview Mode. Overview Mode | |
21 // is equivalent to WindowSelectorController being in selection mode. | |
22 // This hosts a ShellObserver that listens for the activation of Maximize Mode | |
23 // This tray will only be visible while in this state. This tray does not | |
24 // provide any bubble view windows. | |
25 class ASH_EXPORT OverviewButtonTray : public TrayBackgroundView, | |
26 public SessionStateObserver, | |
27 public ShellObserver { | |
28 public: | |
29 explicit OverviewButtonTray(WmShelf* wm_shelf); | |
30 ~OverviewButtonTray() override; | |
31 | |
32 // Updates the tray's visibility based on the LoginStatus and the current | |
33 // state of MaximizeMode | |
34 virtual void UpdateAfterLoginStatusChange(LoginStatus status); | |
35 | |
36 // ActionableView: | |
37 bool PerformAction(const ui::Event& event) override; | |
38 | |
39 // SessionStateObserver: | |
40 void SessionStateChanged(session_manager::SessionState state) override; | |
41 | |
42 // ShellObserver: | |
43 void OnMaximizeModeStarted() override; | |
44 void OnMaximizeModeEnded() override; | |
45 void OnOverviewModeStarting() override; | |
46 void OnOverviewModeEnded() override; | |
47 | |
48 // TrayBackgroundView: | |
49 void ClickedOutsideBubble() override; | |
50 base::string16 GetAccessibleNameForTray() override; | |
51 void HideBubbleWithView(const views::TrayBubbleView* bubble_view) override; | |
52 void SetShelfAlignment(ShelfAlignment alignment) override; | |
53 | |
54 private: | |
55 friend class OverviewButtonTrayTest; | |
56 | |
57 // Creates a new border for the icon. The padding is determined based on the | |
58 // alignment of the shelf. | |
59 void SetIconBorderForShelfAlignment(); | |
60 | |
61 // Sets the icon to visible if maximize mode is enabled and | |
62 // WindowSelectorController::CanSelect. | |
63 void UpdateIconVisibility(); | |
64 | |
65 // Weak pointer, will be parented by TrayContainer for its lifetime. | |
66 views::ImageView* icon_; | |
67 | |
68 DISALLOW_COPY_AND_ASSIGN(OverviewButtonTray); | |
69 }; | |
70 | |
71 } // namespace ash | |
72 | |
73 #endif // ASH_COMMON_SYSTEM_OVERVIEW_OVERVIEW_BUTTON_TRAY_H_ | |
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