Tablet WM : Swiping on system tray bubble.

ash/system/tray/system_tray_bubble.cc

Index: ash/system/tray/system_tray_bubble.cc
diff --git a/ash/system/tray/system_tray_bubble.cc b/ash/system/tray/system_tray_bubble.cc
index bf94470ed85f0c75f6784d3d8513fc6c2e1cc0de..5fd9532d03b8d59e0ad96b51b9e1b189a45db6ff 100644
--- a/ash/system/tray/system_tray_bubble.cc
+++ b/ash/system/tray/system_tray_bubble.cc
@@ -15,6 +15,7 @@
 #include "ash/system/tray/system_tray_item.h"
 #include "ash/system/tray/tray_bubble_wrapper.h"
 #include "ash/system/tray/tray_constants.h"
+#include "ash/wm/maximize_mode/maximize_mode_controller.h"
 #include "base/metrics/histogram_macros.h"
 #include "base/threading/thread_task_runner_handle.h"
 #include "ui/compositor/layer.h"
@@ -68,6 +69,26 @@ class AnimationObserverDeleteLayer : public ui::ImplicitAnimationObserver {
 
 }  // namespace
 
+// CloseBubbleObserver is used to delay closing the system tray bubble until the
+// animation completes.
+class CloseBubbleObserver : public ui::ImplicitAnimationObserver {
+ public:
+  explicit CloseBubbleObserver(SystemTrayBubble* system_tray_bubble)
+      : system_tray_bubble_(system_tray_bubble) {}
+
+  ~CloseBubbleObserver() override {}
+
+  void OnImplicitAnimationsCompleted() override {
+    system_tray_bubble_->Close();
+    delete this;
+  }
+
+ private:
+  SystemTrayBubble* system_tray_bubble_ = nullptr;
+
+  DISALLOW_COPY_AND_ASSIGN(CloseBubbleObserver);
+};
+
 // SystemTrayBubble
 
 SystemTrayBubble::SystemTrayBubble(
@@ -197,8 +218,27 @@ void SystemTrayBubble::InitView(views::View* anchor,
   }
 
   init_params->delegate = tray_;
-  // Place the bubble on same display as this system tray.
-  init_params->parent_window = tray_->GetBubbleWindowContainer();
+  // Place the bubble on same display as this system tray if it is not on
+  // maximize mode. Otherwise, create an clipping window to hold the system
+  // bubble. And place the clipping window on the same display as the system
+  // tray.
+  if (Shell::Get()
+          ->maximize_mode_controller()
+          ->IsMaximizeModeWindowManagerEnabled()) {
+    if (!clipping_window_.get()) {
+      clipping_window_ =
+          std::unique_ptr<aura::Window>(new aura::Window(nullptr));
+      clipping_window_->Init(ui::LAYER_NOT_DRAWN);
+      clipping_window_->layer()->SetMasksToBounds(true);
+      tray_->GetBubbleWindowContainer()->AddChild(clipping_window_.get());
+      clipping_window_->Show();
+    }
+    clipping_window_->SetBounds(tray_->GetWorkAreaBoundsInScreen());
+    init_params->parent_window = clipping_window_.get();
+  } else {
+    init_params->parent_window = tray_->GetBubbleWindowContainer();
+  }
+
   init_params->anchor_view = anchor;
   bubble_view_ = new TrayBubbleView(*init_params);
   UpdateBottomPadding();
@@ -298,6 +338,22 @@ void SystemTrayBubble::RecordVisibleRowMetrics() {
   }
 }
 
+void SystemTrayBubble::AnimateToTargetBounds(const gfx::Rect& target_bounds,
+                                             bool close_bubble) {
+  const int kAnimationDurationMS = 200;
+
+  ui::ScopedLayerAnimationSettings settings(
+      bubble_view()->GetWidget()->GetNativeView()->layer()->GetAnimator());
+  settings.SetTransitionDuration(
+      base::TimeDelta::FromMilliseconds(kAnimationDurationMS));
+  settings.SetTweenType(gfx::Tween::EASE_OUT);
+  settings.SetPreemptionStrategy(
+      ui::LayerAnimator::IMMEDIATELY_ANIMATE_TO_NEW_TARGET);
+  if (close_bubble)
+    settings.AddObserver(new CloseBubbleObserver(this));
+  bubble_view()->GetWidget()->SetBounds(target_bounds);
+}
+
 void SystemTrayBubble::UpdateBottomPadding() {
   if (bubble_type_ == BUBBLE_TYPE_DEFAULT)
     bubble_view_->SetBottomPadding(kDefaultViewBottomPadding);