Re-factor Ash Message Center code part 2/4

ash/system/tray/tray_event_filter.cc

Index: ash/system/tray/tray_event_filter.cc
diff --git a/ash/system/tray/tray_event_filter.cc b/ash/system/tray/tray_event_filter.cc
new file mode 100644
index 0000000000000000000000000000000000000000..d67d989278dd8570047cb0c18866893618d84542
--- /dev/null
+++ b/ash/system/tray/tray_event_filter.cc
@@ -0,0 +1,93 @@
+// 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 "ash/system/tray/tray_event_filter.h"
+
+#include "ash/root_window_controller.h"
+#include "ash/shell.h"
+#include "ash/shell_window_ids.h"
+#include "ash/system/tray/tray_background_view.h"
+#include "ash/system/tray/tray_bubble_view.h"
+#include "ash/system/tray/tray_bubble_wrapper.h"
+#include "ash/system/tray/tray_constants.h"
+#include "ash/system/tray/tray_event_filter.h"
+#include "ash/wm/property_util.h"
+#include "ash/wm/shelf_layout_manager.h"
+#include "ui/aura/event_filter.h"
+#include "ui/aura/window.h"
+#include "ui/views/widget/widget.h"
+
+namespace ash {
+namespace internal {
+
+TrayEventFilter::TrayEventFilter(TrayBubbleWrapper* wrapper)
+    : wrapper_(wrapper) {
+  ash::Shell::GetInstance()->AddEnvEventFilter(this);
+}
+
+TrayEventFilter::~TrayEventFilter() {
+  ash::Shell::GetInstance()->RemoveEnvEventFilter(this);
+}
+
+bool TrayEventFilter::PreHandleKeyEvent(aura::Window* target,
+                                        ui::KeyEvent* event) {
+  return false;
+}
+
+bool TrayEventFilter::PreHandleMouseEvent(aura::Window* target,
+                                          ui::MouseEvent* event) {
+  if (event->type() == ui::ET_MOUSE_PRESSED)
+    return ProcessLocatedEvent(target, *event);
+  return false;
+}
+
+ui::TouchStatus TrayEventFilter::PreHandleTouchEvent(aura::Window* target,
+                                                     ui::TouchEvent* event) {
+  if (event->type() == ui::ET_TOUCH_PRESSED) {
+    if (ProcessLocatedEvent(target, *event))
+      return ui::TOUCH_STATUS_END;
+  }
+  return ui::TOUCH_STATUS_UNKNOWN;
+}
+
+ui::EventResult TrayEventFilter::PreHandleGestureEvent(
+    aura::Window* target,
+    ui::GestureEvent* event) {
+  return ui::ER_UNHANDLED;
+}
+
+bool TrayEventFilter::ProcessLocatedEvent(aura::Window* target,
+                                          const ui::LocatedEvent& event) {
+  if (target) {
+    // Don't process events that occurred inside an embedded menu.
+    ash::internal::RootWindowController* root_controller =
+        ash::GetRootWindowController(target->GetRootWindow());
+    if (root_controller && root_controller->GetContainer(
+            ash::internal::kShellWindowId_MenuContainer)->Contains(target)) {
+      return false;
+    }
+  }
+  if (!wrapper_->bubble_widget())
+    return false;
+
+  gfx::Rect bounds = wrapper_->bubble_widget()->GetWindowBoundsInScreen();
+  gfx::Insets insets;
+  wrapper_->bubble_view()->GetBorderInsets(&insets);
+  bounds.Inset(insets);
+  if (bounds.Contains(event.root_location()))
+    return false;
+  if (wrapper_->tray()) {
+    // If the user clicks on the parent tray, don't process the event here,
+    // let the tray logic handle the event and determine show/hide behavior.
+    bounds = wrapper_->tray()->GetWidget()->GetClientAreaBoundsInScreen();
+    if (bounds.Contains(event.root_location()))
+      return false;
+  }
+  // Handle clicking outside the bubble and tray and return true if the
+  // event was handled.
+  return wrapper_->tray()->ClickedOutsideBubble();
+}
+
+}  // namespace internal
+}  // namespace ash