Touch gestures for System Tray/ IME/ Stylus/ Notifications

ui/views/bubble/tray_bubble_view.cc

 // 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.
 
 #include "ui/views/bubble/tray_bubble_view.h"
 
 #include <algorithm>
 
 #include "base/macros.h"
 #include "cc/paint/paint_flags.h"
@@ skipping 151 matching lines @@
   TrayBubbleView* bubble_view_;
 
   DISALLOW_COPY_AND_ASSIGN(BottomAlignedBoxLayout);
 };
 
 }  // namespace internal
 
 using internal::TrayBubbleContentMask;
 using internal::BottomAlignedBoxLayout;
 
+bool TrayBubbleView::Delegate::ProcessGestureEventOnBubbleView(
+    ui::GestureEvent* event,
+    View* target) {
+  return false;
+}
+
 TrayBubbleView::InitParams::InitParams() = default;
 
 TrayBubbleView::InitParams::InitParams(const InitParams& other) = default;
 
 TrayBubbleView::TrayBubbleView(const InitParams& init_params)
     : BubbleDialogDelegateView(init_params.anchor_view,
                                GetArrowAlignment(init_params.anchor_alignment)),
       params_(init_params),
       layout_(new BottomAlignedBoxLayout(this)),
       delegate_(init_params.delegate),
@@ skipping 204 matching lines @@
     delegate_->OnMouseExitedView();
 }
 
 void TrayBubbleView::GetAccessibleNodeData(ui::AXNodeData* node_data) {
   if (delegate_ && CanActivate()) {
     node_data->role = ui::AX_ROLE_WINDOW;
     node_data->SetName(delegate_->GetAccessibleNameForBubble());
   }
 }
 
+void TrayBubbleView::OnGestureEvent(ui::GestureEvent* event) {
+  if (delegate_ && delegate_->ProcessGestureEventOnBubbleView(event, this))
+    event->SetHandled();
+  else
+    BubbleDialogDelegateView::OnGestureEvent(event);
+}
+
 void TrayBubbleView::MouseMovedOutOfHost() {
   // The mouse was accidentally over the bubble when it opened and the AutoClose
   // logic was not activated. Now that the user did move the mouse we tell the
   // delegate to disable AutoClose.
   delegate_->OnMouseEnteredView();
   mouse_actively_entered_ = true;
   mouse_watcher_->Stop();
 }
 
 bool TrayBubbleView::AcceleratorPressed(const ui::Accelerator& accelerator) {
@@ skipping 60 matching lines @@
     return;
 
   // No need to explicitly activate the widget. View::RequestFocus will activate
   // it if necessary.
   set_can_activate(true);
 
   view->RequestFocus();
 }
 
 }  // namespace views