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| 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 ASH_WM_POWER_BUTTON_CONTROLLER_H_ |
| 6 #define ASH_WM_POWER_BUTTON_CONTROLLER_H_ |
| 7 #pragma once |
| 8 |
| 9 #include "ash/ash_export.h" |
| 10 #include "base/basictypes.h" |
| 11 #include "base/memory/scoped_ptr.h" |
| 12 #include "base/time.h" |
| 13 #include "base/timer.h" |
| 14 #include "ui/aura/root_window_observer.h" |
| 15 |
| 16 namespace gfx { |
| 17 class Size; |
| 18 } |
| 19 |
| 20 namespace ui { |
| 21 class Layer; |
| 22 class LayerDelegate; |
| 23 } |
| 24 |
| 25 namespace ash { |
| 26 |
| 27 // Performs system-related functions on behalf of PowerButtonController. |
| 28 class ASH_EXPORT PowerButtonControllerDelegate { |
| 29 public: |
| 30 PowerButtonControllerDelegate() {} |
| 31 virtual ~PowerButtonControllerDelegate() {} |
| 32 |
| 33 virtual void RequestLockScreen() = 0; |
| 34 virtual void RequestShutdown() = 0; |
| 35 |
| 36 private: |
| 37 DISALLOW_COPY_AND_ASSIGN(PowerButtonControllerDelegate); |
| 38 }; |
| 39 |
| 40 // Displays onscreen animations and locks or suspends the system in response to |
| 41 // the power button being pressed or released. |
| 42 class ASH_EXPORT PowerButtonController : public aura::RootWindowObserver { |
| 43 public: |
| 44 // Animations that can be applied to groups of containers. |
| 45 // Exposed here for TestApi::ContainerGroupIsAnimated(). |
| 46 enum AnimationType { |
| 47 ANIMATION_SLOW_CLOSE = 0, |
| 48 ANIMATION_UNDO_SLOW_CLOSE, |
| 49 ANIMATION_FAST_CLOSE, |
| 50 ANIMATION_FADE_IN, |
| 51 ANIMATION_HIDE, |
| 52 ANIMATION_RESTORE, |
| 53 }; |
| 54 |
| 55 // Groups of containers that can be animated. |
| 56 // Exposed here for TestApi::ContainerGroupIsAnimated(). |
| 57 enum ContainerGroup { |
| 58 ALL_CONTAINERS = 0, |
| 59 SCREEN_LOCKER_CONTAINERS, |
| 60 SCREEN_LOCKER_AND_RELATED_CONTAINERS, |
| 61 ALL_BUT_SCREEN_LOCKER_AND_RELATED_CONTAINERS, |
| 62 }; |
| 63 |
| 64 // Helper class used by tests to access internal state. |
| 65 class TestApi { |
| 66 public: |
| 67 TestApi(PowerButtonController* controller) : controller_(controller) {} |
| 68 |
| 69 bool lock_timer_is_running() const { |
| 70 return controller_->lock_timer_.IsRunning(); |
| 71 } |
| 72 bool lock_fail_timer_is_running() const { |
| 73 return controller_->lock_fail_timer_.IsRunning(); |
| 74 } |
| 75 bool lock_to_shutdown_timer_is_running() const { |
| 76 return controller_->lock_to_shutdown_timer_.IsRunning(); |
| 77 } |
| 78 bool shutdown_timer_is_running() const { |
| 79 return controller_->shutdown_timer_.IsRunning(); |
| 80 } |
| 81 bool real_shutdown_timer_is_running() const { |
| 82 return controller_->real_shutdown_timer_.IsRunning(); |
| 83 } |
| 84 bool hide_background_layer_timer_is_running() const { |
| 85 return controller_->hide_background_layer_timer_.IsRunning(); |
| 86 } |
| 87 |
| 88 void trigger_lock_timeout() { controller_->OnLockTimeout(); } |
| 89 void trigger_lock_fail_timeout() { controller_->OnLockFailTimeout(); } |
| 90 void trigger_lock_to_shutdown_timeout() { |
| 91 controller_->OnLockToShutdownTimeout(); |
| 92 } |
| 93 void trigger_shutdown_timeout() { controller_->OnShutdownTimeout(); } |
| 94 void trigger_real_shutdown_timeout() { |
| 95 controller_->OnRealShutdownTimeout(); |
| 96 } |
| 97 void trigger_hide_background_layer_timeout() { |
| 98 controller_->HideBackgroundLayer(); |
| 99 } |
| 100 |
| 101 // Returns true if the given set of containers was last animated with |
| 102 // |type| (probably; the analysis is fairly ad-hoc). |
| 103 bool ContainerGroupIsAnimated(ContainerGroup group, |
| 104 AnimationType type) const; |
| 105 |
| 106 // Returns true if |background_layer_| is non-NULL and visible. |
| 107 bool BackgroundLayerIsVisible() const; |
| 108 |
| 109 private: |
| 110 PowerButtonController* controller_; // not owned |
| 111 |
| 112 DISALLOW_COPY_AND_ASSIGN(TestApi); |
| 113 }; |
| 114 |
| 115 PowerButtonController(); |
| 116 ~PowerButtonController(); |
| 117 |
| 118 void set_delegate(PowerButtonControllerDelegate* delegate) { |
| 119 delegate_.reset(delegate); |
| 120 } |
| 121 |
| 122 // Called when the user logs in. |
| 123 void OnLoginStateChange(bool logged_in, bool is_guest); |
| 124 |
| 125 // Called when the screen is locked (after the lock window is visible) or |
| 126 // unlocked. |
| 127 void OnLockStateChange(bool locked); |
| 128 |
| 129 // Called when Chrome gets a request to display the lock screen. |
| 130 void OnStartingLock(); |
| 131 |
| 132 // Called when the power or lock buttons are pressed or released. |
| 133 void OnPowerButtonEvent(bool down, const base::TimeTicks& timestamp); |
| 134 void OnLockButtonEvent(bool down, const base::TimeTicks& timestamp); |
| 135 |
| 136 // aura::RootWindowObserver overrides: |
| 137 virtual void OnRootWindowResized(const gfx::Size& new_size) OVERRIDE; |
| 138 |
| 139 private: |
| 140 class BackgroundLayerDelegate; |
| 141 |
| 142 // Requests that the screen be locked and starts |lock_fail_timer_|. |
| 143 void OnLockTimeout(); |
| 144 |
| 145 // Aborts the pre-lock animation. |
| 146 void OnLockFailTimeout(); |
| 147 |
| 148 // Displays the pre-shutdown animation and starts |shutdown_timer_|. |
| 149 void OnLockToShutdownTimeout(); |
| 150 |
| 151 // Displays the shutdown animation and starts |real_shutdown_timer_|. |
| 152 void OnShutdownTimeout(); |
| 153 |
| 154 // Requests that the machine be shut down. |
| 155 void OnRealShutdownTimeout(); |
| 156 |
| 157 // Puts us into the pre-shutdown state. |
| 158 void StartShutdownTimer(); |
| 159 |
| 160 // Shows or hides |background_layer_|. The show method creates and |
| 161 // initializes the layer if it doesn't already exist. |
| 162 void ShowBackgroundLayer(); |
| 163 void HideBackgroundLayer(); |
| 164 |
| 165 scoped_ptr<PowerButtonControllerDelegate> delegate_; |
| 166 |
| 167 // True if a non-guest user is currently logged in. |
| 168 bool logged_in_as_non_guest_; |
| 169 |
| 170 // True if the screen is currently locked. |
| 171 bool locked_; |
| 172 |
| 173 // Are the power or lock buttons currently held? |
| 174 bool power_button_down_; |
| 175 bool lock_button_down_; |
| 176 |
| 177 // Are we in the process of shutting the machine down? |
| 178 bool shutting_down_; |
| 179 |
| 180 // Should we start |shutdown_timer_| when we receive notification that the |
| 181 // screen has been locked? |
| 182 bool should_start_shutdown_timer_after_lock_; |
| 183 |
| 184 // Responsible for painting |background_layer_|. |
| 185 scoped_ptr<BackgroundLayerDelegate> background_layer_delegate_; |
| 186 |
| 187 // Layer that's stacked under all of the root window's children to provide a |
| 188 // black background when we're scaling all of the other windows down. |
| 189 scoped_ptr<ui::Layer> background_layer_; |
| 190 |
| 191 // Started when the user first presses the power button while in a |
| 192 // logged-in-as-a-non-guest-user, unlocked state. When it fires, we lock the |
| 193 // screen. |
| 194 base::OneShotTimer<PowerButtonController> lock_timer_; |
| 195 |
| 196 // Started when we request that the screen be locked. When it fires, we |
| 197 // assume that our request got dropped. |
| 198 base::OneShotTimer<PowerButtonController> lock_fail_timer_; |
| 199 |
| 200 // Started when the screen is locked while the power button is held. Adds a |
| 201 // delay between the appearance of the lock screen and the beginning of the |
| 202 // pre-shutdown animation. |
| 203 base::OneShotTimer<PowerButtonController> lock_to_shutdown_timer_; |
| 204 |
| 205 // Started when we begin displaying the pre-shutdown animation. When it |
| 206 // fires, we start the shutdown animation and get ready to request shutdown. |
| 207 base::OneShotTimer<PowerButtonController> shutdown_timer_; |
| 208 |
| 209 // Started when we display the shutdown animation. When it fires, we actually |
| 210 // request shutdown. Gives the animation time to complete before Chrome, X, |
| 211 // etc. are shut down. |
| 212 base::OneShotTimer<PowerButtonController> real_shutdown_timer_; |
| 213 |
| 214 // Started when we abort the pre-lock state. When it fires, we hide |
| 215 // |background_layer_|, as the desktop background is now covering the whole |
| 216 // screen. |
| 217 base::OneShotTimer<PowerButtonController> hide_background_layer_timer_; |
| 218 |
| 219 DISALLOW_COPY_AND_ASSIGN(PowerButtonController); |
| 220 }; |
| 221 |
| 222 } // namespace ash |
| 223 |
| 224 #endif // ASH_WM_POWER_BUTTON_CONTROLLER_H_ |
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