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| 1 // Copyright 2016 The Chromium Authors. All rights reserved. | 1 // Copyright 2016 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
| 4 | 4 |
| 5 #ifndef UI_DISPLAY_DISPLAY_LIST_H_ | 5 #ifndef UI_DISPLAY_DISPLAY_LIST_H_ |
| 6 #define UI_DISPLAY_DISPLAY_LIST_H_ | 6 #define UI_DISPLAY_DISPLAY_LIST_H_ |
| 7 | 7 |
| 8 #include <stdint.h> | 8 #include <stdint.h> |
| 9 | 9 |
| 10 #include <memory> | 10 #include <memory> |
| (...skipping 17 matching lines...) Expand all Loading... |
| 28 private: | 28 private: |
| 29 friend class DisplayList; | 29 friend class DisplayList; |
| 30 | 30 |
| 31 explicit DisplayListObserverLock(DisplayList* display_list); | 31 explicit DisplayListObserverLock(DisplayList* display_list); |
| 32 | 32 |
| 33 DisplayList* display_list_; | 33 DisplayList* display_list_; |
| 34 | 34 |
| 35 DISALLOW_COPY_AND_ASSIGN(DisplayListObserverLock); | 35 DISALLOW_COPY_AND_ASSIGN(DisplayListObserverLock); |
| 36 }; | 36 }; |
| 37 | 37 |
| 38 // Maintains an ordered list of display::Displays as well as operations to add, | 38 // Maintains an ordered list of Displays as well as operations to add, remove |
| 39 // remove and update said list. Additionally maintains display::DisplayObservers | 39 // and update said list. Additionally maintains DisplayObservers and updates |
| 40 // and updates them as appropriate. | 40 // them as appropriate. |
| 41 class DISPLAY_EXPORT DisplayList { | 41 class DISPLAY_EXPORT DisplayList { |
| 42 public: | 42 public: |
| 43 using Displays = std::vector<display::Display>; | 43 using Displays = std::vector<Display>; |
| 44 | 44 |
| 45 enum class Type { | 45 enum class Type { |
| 46 PRIMARY, | 46 PRIMARY, |
| 47 NOT_PRIMARY, | 47 NOT_PRIMARY, |
| 48 }; | 48 }; |
| 49 | 49 |
| 50 DisplayList(); | 50 DisplayList(); |
| 51 ~DisplayList(); | 51 ~DisplayList(); |
| 52 | 52 |
| 53 void AddObserver(display::DisplayObserver* observer); | 53 void AddObserver(DisplayObserver* observer); |
| 54 void RemoveObserver(display::DisplayObserver* observer); | 54 void RemoveObserver(DisplayObserver* observer); |
| 55 | 55 |
| 56 const Displays& displays() const { return displays_; } | 56 const Displays& displays() const { return displays_; } |
| 57 | 57 |
| 58 Displays::const_iterator FindDisplayById(int64_t id) const; | 58 Displays::const_iterator FindDisplayById(int64_t id) const; |
| 59 | 59 |
| 60 Displays::const_iterator GetPrimaryDisplayIterator() const; | 60 Displays::const_iterator GetPrimaryDisplayIterator() const; |
| 61 | 61 |
| 62 // Internally increments a counter that while non-zero results in observers | 62 // Internally increments a counter that while non-zero results in observers |
| 63 // not being called for any changes to the displays. It is assumed once | 63 // not being called for any changes to the displays. It is assumed once |
| 64 // callers release the last lock they call the observers appropriately. | 64 // callers release the last lock they call the observers appropriately. |
| 65 std::unique_ptr<DisplayListObserverLock> SuspendObserverUpdates(); | 65 std::unique_ptr<DisplayListObserverLock> SuspendObserverUpdates(); |
| 66 | 66 |
| 67 // Updates the cached display based on display.id(). | 67 // Updates the cached display based on display.id(). |
| 68 void UpdateDisplay(const display::Display& display); | 68 void UpdateDisplay(const Display& display); |
| 69 | 69 |
| 70 // Updates the cached display based on display.id(). Also updates the primary | 70 // Updates the cached display based on display.id(). Also updates the primary |
| 71 // display if |type| indicates |display| is the primary display. | 71 // display if |type| indicates |display| is the primary display. |
| 72 void UpdateDisplay(const display::Display& display, Type type); | 72 void UpdateDisplay(const Display& display, Type type); |
| 73 | 73 |
| 74 // Adds a new Display. | 74 // Adds a new Display. |
| 75 void AddDisplay(const display::Display& display, Type type); | 75 void AddDisplay(const Display& display, Type type); |
| 76 | 76 |
| 77 // Removes the Display with the specified id. | 77 // Removes the Display with the specified id. |
| 78 void RemoveDisplay(int64_t id); | 78 void RemoveDisplay(int64_t id); |
| 79 | 79 |
| 80 base::ObserverList<display::DisplayObserver>* observers() { | 80 base::ObserverList<DisplayObserver>* observers() { return &observers_; } |
| 81 return &observers_; | |
| 82 } | |
| 83 | 81 |
| 84 private: | 82 private: |
| 85 friend class DisplayListObserverLock; | 83 friend class DisplayListObserverLock; |
| 86 | 84 |
| 87 bool should_notify_observers() const { | 85 bool should_notify_observers() const { |
| 88 return observer_suspend_lock_count_ == 0; | 86 return observer_suspend_lock_count_ == 0; |
| 89 } | 87 } |
| 90 void IncrementObserverSuspendLockCount(); | 88 void IncrementObserverSuspendLockCount(); |
| 91 void DecrementObserverSuspendLockCount(); | 89 void DecrementObserverSuspendLockCount(); |
| 92 | 90 |
| 93 Type GetTypeByDisplayId(int64_t display_id) const; | 91 Type GetTypeByDisplayId(int64_t display_id) const; |
| 94 | 92 |
| 95 Displays::iterator FindDisplayByIdInternal(int64_t id); | 93 Displays::iterator FindDisplayByIdInternal(int64_t id); |
| 96 | 94 |
| 97 std::vector<display::Display> displays_; | 95 std::vector<Display> displays_; |
| 98 int primary_display_index_ = -1; | 96 int primary_display_index_ = -1; |
| 99 base::ObserverList<display::DisplayObserver> observers_; | 97 base::ObserverList<DisplayObserver> observers_; |
| 100 | 98 |
| 101 int observer_suspend_lock_count_ = 0; | 99 int observer_suspend_lock_count_ = 0; |
| 102 | 100 |
| 103 DISALLOW_COPY_AND_ASSIGN(DisplayList); | 101 DISALLOW_COPY_AND_ASSIGN(DisplayList); |
| 104 }; | 102 }; |
| 105 | 103 |
| 106 } // namespace display | 104 } // namespace display |
| 107 | 105 |
| 108 #endif // UI_DISPLAY_DISPLAY_LIST_H_ | 106 #endif // UI_DISPLAY_DISPLAY_LIST_H_ |
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