Touch gestures for System Tray/ IME/ Stylus/ Notifications

ash/system/ime_menu/ime_menu_tray.cc

Index: ash/system/ime_menu/ime_menu_tray.cc
diff --git a/ash/system/ime_menu/ime_menu_tray.cc b/ash/system/ime_menu/ime_menu_tray.cc
index df15493b0e9bdbf761bcf795c5098bda8f458828..abf3f9f97d10b3f5fd9f77d9fe492c46304421ba 100644
--- a/ash/system/ime_menu/ime_menu_tray.cc
+++ b/ash/system/ime_menu/ime_menu_tray.cc
@@ -190,7 +190,7 @@ class ImeButtonsView : public views::View, public views::ButtonListener {
   // views::ButtonListener:
   void ButtonPressed(views::Button* sender, const ui::Event& event) override {
     if (sender == settings_button_) {
-      ime_menu_tray_->HideImeMenuBubble();
+      ime_menu_tray_->CloseBubble();
       ShowIMESettings();
       return;
     }
@@ -320,19 +320,6 @@ ImeMenuTray::~ImeMenuTray() {
     keyboard_controller->RemoveObserver(this);
 }
 
-void ImeMenuTray::ShowImeMenuBubble() {
-  keyboard::KeyboardController* keyboard_controller =
-      keyboard::KeyboardController::GetInstance();
-  if (keyboard_controller && keyboard_controller->keyboard_visible()) {
-    show_bubble_after_keyboard_hidden_ = true;
-    keyboard_controller->AddObserver(this);
-    keyboard_controller->HideKeyboard(
-        keyboard::KeyboardController::HIDE_REASON_AUTOMATIC);
-  } else {
-    ShowImeMenuBubbleInternal();
-  }
-}
-
 void ImeMenuTray::ShowImeMenuBubbleInternal() {
   views::TrayBubbleView::InitParams init_params;
   init_params.delegate = this;
@@ -365,19 +352,8 @@ void ImeMenuTray::ShowImeMenuBubbleInternal() {
   SetIsActive(true);
 }
 
-void ImeMenuTray::HideImeMenuBubble() {
-  bubble_.reset();
-  ime_list_view_ = nullptr;
-  SetIsActive(false);
-  shelf()->UpdateAutoHideState();
-}
-
-bool ImeMenuTray::IsImeMenuBubbleShown() {
-  return !!bubble_;
-}
-
 void ImeMenuTray::ShowKeyboardWithKeyset(const std::string& keyset) {
-  HideImeMenuBubble();
+  CloseBubble();
 
   // Overrides the keyboard url ref to make it shown with the given keyset.
   if (InputMethodManager::Get())
@@ -455,21 +431,50 @@ base::string16 ImeMenuTray::GetAccessibleNameForTray() {
 
 void ImeMenuTray::HideBubbleWithView(const views::TrayBubbleView* bubble_view) {
   if (bubble_->bubble_view() == bubble_view)
-    HideImeMenuBubble();
+    CloseBubble();
 }
 
 void ImeMenuTray::ClickedOutsideBubble() {
-  HideImeMenuBubble();
+  CloseBubble();
 }
 
 bool ImeMenuTray::PerformAction(const ui::Event& event) {
   if (bubble_)
-    HideImeMenuBubble();
+    CloseBubble();
   else
-    ShowImeMenuBubble();
+    ShowBubble();
   return true;
 }
 
+void ImeMenuTray::CloseBubble() {
+  bubble_.reset();
+  ime_list_view_ = nullptr;
+  SetIsActive(false);
+  shelf()->UpdateAutoHideState();
+}
+
+void ImeMenuTray::ShowBubble() {
+  keyboard::KeyboardController* keyboard_controller =
+      keyboard::KeyboardController::GetInstance();
+  if (keyboard_controller && keyboard_controller->keyboard_visible()) {
+    show_bubble_after_keyboard_hidden_ = true;
+    keyboard_controller->AddObserver(this);
+    keyboard_controller->HideKeyboard(
+        keyboard::KeyboardController::HIDE_REASON_AUTOMATIC);
+  } else {
+    ShowImeMenuBubbleInternal();
+  }
+}
+
+views::TrayBubbleView* ImeMenuTray::GetBubbleView() {
+  return bubble_ ? bubble_->bubble_view() : nullptr;
+}
+
+void ImeMenuTray::OnGestureEvent(ui::GestureEvent* event) {
+  if (!drag_controller()->ProcessGestureEvent(event, this))
+    TrayBackgroundView::OnGestureEvent(event);
+}
+
 void ImeMenuTray::OnIMERefresh() {
   UpdateTrayLabel();
   if (bubble_ && ime_list_view_) {
@@ -485,7 +490,7 @@ void ImeMenuTray::OnIMEMenuActivationChanged(bool is_activated) {
   if (is_activated)
     UpdateTrayLabel();
   else
-    HideImeMenuBubble();
+    CloseBubble();
 }
 
 void ImeMenuTray::BubbleViewDestroyed() {
@@ -519,6 +524,9 @@ void ImeMenuTray::HideBubble(const views::TrayBubbleView* bubble_view) {
   HideBubbleWithView(bubble_view);
 }
 
+bool ImeMenuTray::ProcessGestureEventForBubble(ui::GestureEvent* event) {
+  return drag_controller()->ProcessGestureEvent(event, this);
+}
 void ImeMenuTray::OnKeyboardBoundsChanging(const gfx::Rect& new_bounds) {}
 
 void ImeMenuTray::OnKeyboardClosed() {
@@ -572,7 +580,7 @@ void ImeMenuTray::OnKeyboardHidden() {
 
 void ImeMenuTray::OnKeyboardSuppressionChanged(bool suppressed) {
   if (suppressed != keyboard_suppressed_ && bubble_)
-    HideImeMenuBubble();
+    CloseBubble();
   keyboard_suppressed_ = suppressed;
 }