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_SYSTEM_WEB_NOTIFICATION_ASH_POPUP_ALIGNMENT_DELEGATE_H_ 6 #define ASH_SYSTEM_WEB_NOTIFICATION_ASH_POPUP_ALIGNMENT_DELEGATE_H_ 7 8 #include "ash/ash_export.h" 9 #include "ash/shelf/shelf_layout_manager_observer.h" 10 #include "ash/shelf/shelf_types.h" 11 #include "ash/shell_observer.h" 12 #include "base/macros.h" 13 #include "ui/gfx/display_observer.h" 14 #include "ui/gfx/geometry/rect.h" 15 #include "ui/message_center/views/popup_alignment_delegate.h" 16 17 namespace aura { 18 class Window; 19 } 20 21 namespace gfx { 22 class Screen; 23 } 24 25 namespace ash { 26 27 class AshPopupAlignmentDelegateTest; 28 class ShelfLayoutManager; 29 class WebNotificationTrayTest; 30 31 // The PopupAlignmentDelegate subclass for Ash. It needs to handle alignment of 32 // the shelf and its autohide state. 33 class ASH_EXPORT AshPopupAlignmentDelegate 34 : public message_center::PopupAlignmentDelegate, 35 public ShelfLayoutManagerObserver, 36 public ShellObserver, 37 public gfx::DisplayObserver { 38 public: 39 AshPopupAlignmentDelegate(); 40 virtual ~AshPopupAlignmentDelegate(); 41 42 // Start observing the system. 43 void StartObserving(gfx::Screen* screen, const gfx::Display& display); 44 45 // Sets the current height of the system tray so that the notification toasts 46 // can avoid it. 47 void SetSystemTrayHeight(int height); 48 49 // Overridden from message_center::PopupAlignmentDelegate: 50 virtual int GetToastOriginX(const gfx::Rect& toast_bounds) const OVERRIDE; 51 virtual int GetBaseLine() const OVERRIDE; 52 virtual int GetWorkAreaBottom() const OVERRIDE; 53 virtual bool IsTopDown() const OVERRIDE; 54 virtual bool IsFromLeft() const OVERRIDE; 55 virtual void RecomputeAlignment(const gfx::Display& display) OVERRIDE; 56 57 private: 58 friend class AshPopupAlignmentDelegateTest; 59 friend class WebNotificationTrayTest; 60 61 // Get the current alignment of the shelf. 62 ShelfAlignment GetAlignment() const; 63 64 // Update |shelf_| and start watching when it's first set. This should not 65 // be done in the constructor because the shelf might not be initialized at 66 // that point. 67 void UpdateShelf(); 68 69 // Overridden from ShellObserver: 70 virtual void OnDisplayWorkAreaInsetsChanged() OVERRIDE; 71 72 // Overridden from ShelfLayoutManagerObserver: 73 virtual void OnAutoHideStateChanged(ShelfAutoHideState new_state) OVERRIDE; 74 75 // Overridden from gfx::DisplayObserver: 76 virtual void OnDisplayAdded(const gfx::Display& new_display) OVERRIDE; 77 virtual void OnDisplayRemoved(const gfx::Display& old_display) OVERRIDE; 78 virtual void OnDisplayMetricsChanged(const gfx::Display& display, 79 uint32_t metrics) OVERRIDE; 80 81 int64_t display_id_; 82 gfx::Screen* screen_; 83 gfx::Rect work_area_; 84 aura::Window* root_window_; 85 ShelfLayoutManager* shelf_; 86 int system_tray_height_; 87 88 DISALLOW_COPY_AND_ASSIGN(AshPopupAlignmentDelegate); 89 }; 90 91 } // namespace ash 92 93 #endif // ASH_SYSTEM_WEB_NOTIFICATION_ASH_POPUP_ALIGNMENT_DELEGATE_H_ 94