Touch gestures for System Tray/ IME/ Stylus/ Notifications

ash/system/tray/system_tray.h

 // Copyright (c) 2012 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_SYSTEM_TRAY_SYSTEM_TRAY_H_
 #define ASH_SYSTEM_TRAY_SYSTEM_TRAY_H_
 
 #include <map>
 #include <memory>
 #include <vector>
@@ skipping 124 matching lines @@
   void BubbleViewDestroyed() override;
   void OnMouseEnteredView() override;
   void OnMouseExitedView() override;
   void RegisterAccelerators(const std::vector<ui::Accelerator>& accelerators,
                             views::TrayBubbleView* tray_bubble_view) override;
   void UnregisterAllAccelerators(
       views::TrayBubbleView* tray_bubble_view) override;
   base::string16 GetAccessibleNameForBubble() override;
   bool ShouldEnableExtraKeyboardAccessibility() override;
   void HideBubble(const views::TrayBubbleView* bubble_view) override;
+  bool ProcessGestureEventOnBubbleView(ui::GestureEvent* event,
+                                       View* target) override;
 
   ScreenTrayItem* GetScreenShareItem() { return screen_share_tray_item_; }
   ScreenTrayItem* GetScreenCaptureItem() { return screen_capture_tray_item_; }
 
   // Activates the system tray bubble.
   void ActivateBubble();
 
   // ui::EventHandler:
   void OnGestureEvent(ui::GestureEvent* event) override;
 
@@ skipping 70 matching lines @@
   // The original bounds of the system tray bubble.
   gfx::Rect system_tray_bubble_bounds_;
 
   // Tracks the amount of the drag. Only valid if |is_in_drag_| is true.
   float gesture_drag_amount_ = 0.f;
 
   // True if the user is in the process of gesture-dragging to open the system
   // tray bubble, false otherwise.
   bool is_in_drag_ = false;
 
+  // The target view that the sequence of scroll events happened on.
+  View* target_view_;
+
   // The web notification tray view that appears adjacent to this view.
   WebNotificationTray* web_notification_tray_ = nullptr;
 
   // Items.
   std::vector<std::unique_ptr<SystemTrayItem>> items_;
 
   // Pointers to members of |items_|.
   SystemTrayItem* detailed_item_ = nullptr;
 
   // Bubble for default and detailed views.
@@ skipping 27 matching lines @@
   ScreenTrayItem* screen_share_tray_item_ = nullptr;    // not owned
 
   std::unique_ptr<ActivationObserver> activation_observer_;
 
   DISALLOW_COPY_AND_ASSIGN(SystemTray);
 };
 
 }  // namespace ash
 
 #endif  // ASH_SYSTEM_TRAY_SYSTEM_TRAY_H_