| // 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 "ui/aura/window.h" |
| #include "ui/aura/window_delegate.h" |
| #include "ui/events/event.h" |
| #include "ui/views/widget/widget.h" |
| |
| namespace ash { |
| |
| OverlayEventFilter::OverlayEventFilter() : scoped_session_observer_(this) {} |
| |
| OverlayEventFilter::~OverlayEventFilter() { |
| delegate_ = nullptr; |
| } |
| |
| void OverlayEventFilter::OnKeyEvent(ui::KeyEvent* event) { |
| if (!delegate_) |
| return; |
| |
| if (delegate_ && delegate_->IsCancelingKeyEvent(event)) |
| Cancel(); |
| |
| // Pass 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)) |
| event->StopPropagation(); |
| } |
| |
| void OverlayEventFilter::OnLoginStatusChanged(LoginStatus status) { |
| Cancel(); |
| } |
| |
| void OverlayEventFilter::OnChromeTerminating() { |
| Cancel(); |
| } |
| |
| void OverlayEventFilter::OnLockStateChanged(bool locked) { |
| Cancel(); |
| } |
| |
| void OverlayEventFilter::Activate(Delegate* delegate) { |
| if (delegate_) |
| delegate_->Cancel(); |
| delegate_ = delegate; |
| } |
| |
| void OverlayEventFilter::Deactivate(Delegate* delegate) { |
| if (delegate_ == delegate) |
| delegate_ = nullptr; |
| } |
| |
| void OverlayEventFilter::Cancel() { |
| if (delegate_) { |
| delegate_->Cancel(); |
| delegate_ = nullptr; |
| } |
| } |
| |
| bool OverlayEventFilter::IsActive() { |
| return delegate_ != nullptr; |
| } |
| |
| } // namespace ash |