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// 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()
: delegate_(NULL) {
}
OverlayEventFilter::~OverlayEventFilter() {
delegate_ = NULL;
}
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::OnLoginStateChanged(
user::LoginStatus status) {
Cancel();
}
void OverlayEventFilter::OnAppTerminating() {
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
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