1 files changed, 78 insertions, 0 deletions
diff --git a/chromium/ash/wm/overlay_event_filter.cc b/chromium/ash/wm/overlay_event_filter.cc
new file mode 100644
index 00000000000..2319d2fca27
--- /dev/null
+++ b/chromium/ash/wm/overlay_event_filter.cc
@@ -0,0 +1,78 @@
+// 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/wm/overlay_event_filter.h"
+
+#include "ash/wm/partial_screenshot_view.h"
+#include "ui/aura/window.h"
+#include "ui/aura/window_delegate.h"
+#include "ui/base/events/event.h"
+#include "ui/views/widget/widget.h"
+
+namespace ash {
+namespace internal {
+
+OverlayEventFilter::OverlayEventFilter()
+    : delegate_(NULL) {
+}
+
+OverlayEventFilter::~OverlayEventFilter() {
+  delegate_ = NULL;
+}
+
+void OverlayEventFilter::OnKeyEvent(ui::KeyEvent* event) {
+  if (!delegate_)
+    return;
+
+  // Do not consume a translated key event which is generated by an IME (e.g.,
+  // ui::VKEY_PROCESSKEY) since the key event is generated in response to a key
+  // press or release before showing the ovelay. This is important not to
+  // confuse key event handling JavaScript code in a page.
+  if (event->type() == ui::ET_TRANSLATED_KEY_PRESS ||
+      event->type() == ui::ET_TRANSLATED_KEY_RELEASE) {
+    return;
+  }
+
+  if (delegate_ && delegate_->IsCancelingKeyEvent(event))
+    Cancel();
+
+  // Handle key events only when they are sent to a child of the delegate's
+  // window.
+  aura::Window* target = static_cast<aura::Window*>(event->target());
+  if (delegate_ && delegate_->GetWindow() &&
+      delegate_->GetWindow()->Contains(target))
+    target->delegate()->OnKeyEvent(event);
+
+  // Always handled: other windows shouldn't receive input while we're
+  // displaying an overlay.
+  event->StopPropagation();
+}
+
+void OverlayEventFilter::OnLoginStateChanged(
+    user::LoginStatus status) {
+  Cancel();
+}
+
+void OverlayEventFilter::OnAppTerminating() {
+  Cancel();
+}
+
+void OverlayEventFilter::OnLockStateChanged(bool locked) {
+  Cancel();
+}
+
+void OverlayEventFilter::Activate(Delegate* delegate) {
+  delegate_ = delegate;
+}
+
+void OverlayEventFilter::Deactivate() {
+  delegate_ = NULL;
+}
+
+void OverlayEventFilter::Cancel() {
+  if (delegate_)
+    delegate_->Cancel();
+}
+}  // namespace internal
+}  // namespace ash