| // Copyright 2013 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef ASH_DISPLAY_RESOLUTION_NOTIFICATION_CONTROLLER_H_ |
| #define ASH_DISPLAY_RESOLUTION_NOTIFICATION_CONTROLLER_H_ |
| |
| #include <stdint.h> |
| |
| #include "ash/ash_export.h" |
| #include "ash/display/window_tree_host_manager.h" |
| #include "base/callback.h" |
| #include "base/gtest_prod_util.h" |
| #include "base/macros.h" |
| #include "base/memory/weak_ptr.h" |
| #include "base/timer/timer.h" |
| #include "ui/display/display_observer.h" |
| #include "ui/gfx/geometry/size.h" |
| #include "ui/message_center/public/cpp/notification_delegate.h" |
| |
| namespace ash { |
| |
| FORWARD_DECLARE_TEST(DisplayPrefsTest, PreventStore); |
| |
| // A class which manages the notification of display resolution change and |
| // also manages the timeout in case the new resolution is unusable. |
| class ASH_EXPORT ResolutionNotificationController |
| : public display::DisplayObserver, |
| public WindowTreeHostManager::Observer, |
| public message_center::NotificationObserver { |
| public: |
| ResolutionNotificationController(); |
| ~ResolutionNotificationController() override; |
| |
| // If |display_id| is not the internal display, Prepare a resolution change |
| // notification for |display_id| from |old_resolution| to |new_resolution|, |
| // which offers a button to revert the change in case something goes wrong. |
| // The notification times out if there's only one display connected and the |
| // user is trying to modify its resolution. In that case, the timeout has to |
| // be set since the user cannot make any changes if something goes wrong. |
| // |
| // Then call DisplayManager::SetDisplayMode() to apply the resolution change, |
| // and return the result; true if success, false otherwise. |
| // In case SetDisplayMode() fails, the prepared notification will be |
| // discarded. |
| // |
| // If |display_id| is the internal display, the resolution change is applied |
| // directly without preparing the confirm/revert notification (this kind of |
| // notification is only useful for external displays). |
| // |
| // This method does not create a notification itself. The notification will be |
| // created the next OnDisplayConfigurationChanged(), which will be called |
| // asynchronously after the resolution change is requested by this method. |
| // |
| // |accept_callback| will be called when the user accepts the resoltion change |
| // by closing the notification bubble or clicking on the accept button (if |
| // any). |
| bool PrepareNotificationAndSetDisplayMode( |
| int64_t display_id, |
| const display::ManagedDisplayMode& old_resolution, |
| const display::ManagedDisplayMode& new_resolution, |
| base::OnceClosure accept_callback) WARN_UNUSED_RESULT; |
| |
| // Returns true if the notification is visible or scheduled to be visible and |
| // the notification times out. |
| bool DoesNotificationTimeout(); |
| |
| // message_center::NotificationObserver |
| void Close(bool by_user) override; |
| void Click(const base::Optional<int>& button_index, |
| const base::Optional<base::string16>& reply) override; |
| |
| private: |
| friend class ResolutionNotificationControllerTest; |
| FRIEND_TEST_ALL_PREFIXES(ResolutionNotificationControllerTest, Timeout); |
| FRIEND_TEST_ALL_PREFIXES(DisplayPrefsTest, PreventStore); |
| |
| // A struct to bundle the data for a single resolution change. |
| struct ResolutionChangeInfo; |
| |
| static const int kTimeoutInSec; |
| static const char kNotificationId[]; |
| |
| // Create a new notification, or update its content if it already exists. |
| // |enable_spoken_feedback| is set to false when the notification is updated |
| // during the countdown so the update isn't necessarily read by the spoken |
| // feedback. |
| void CreateOrUpdateNotification(bool enable_spoken_feedback); |
| |
| // Called when the user accepts the display resolution change. Set |
| // |close_notification| to true when the notification should be removed. |
| void AcceptResolutionChange(bool close_notification); |
| |
| // Called when the user wants to revert the display resolution change. |
| void RevertResolutionChange(bool display_was_removed); |
| |
| // Called every second for timeout. |
| void OnTimerTick(); |
| |
| // display::DisplayObserver overrides: |
| void OnDisplayRemoved(const display::Display& old_display) override; |
| |
| // WindowTreeHostManager::Observer overrides: |
| void OnDisplayConfigurationChanged() override; |
| |
| static void SuppressTimerForTest(); |
| |
| std::unique_ptr<ResolutionChangeInfo> change_info_; |
| |
| base::WeakPtrFactory<ResolutionNotificationController> weak_factory_; |
| |
| DISALLOW_COPY_AND_ASSIGN(ResolutionNotificationController); |
| }; |
| |
| } // namespace ash |
| |
| #endif // ASH_DISPLAY_RESOLUTION_NOTIFICATION_CONTROLLER_H_ |