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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/app_list/app_list.h"
#include "ash/app_list/app_list_view.h"
#include "ash/shell_delegate.h"
#include "ash/shell.h"
#include "ash/shell_window_ids.h"
#include "ui/aura/event.h"
#include "ui/aura/root_window.h"
#include "ui/aura/window.h"
#include "ui/gfx/compositor/scoped_layer_animation_settings.h"
#include "ui/gfx/screen.h"
namespace ash {
namespace internal {
namespace {
// Gets preferred bounds of app list window.
gfx::Rect GetPreferredBounds() {
gfx::Point cursor = gfx::Screen::GetCursorScreenPoint();
// Use full monitor rect so that the app list shade goes behind the launcher.
return gfx::Screen::GetMonitorAreaNearestPoint(cursor);
}
ui::Layer* GetLayer(views::Widget* widget) {
return widget->GetNativeView()->layer();
}
} // namespace
////////////////////////////////////////////////////////////////////////////////
// AppList, public:
AppList::AppList() : is_visible_(false), widget_(NULL) {
}
AppList::~AppList() {
ResetWidget();
}
void AppList::SetVisible(bool visible) {
if (visible == is_visible_)
return;
is_visible_ = visible;
if (widget_) {
ScheduleAnimation();
} else if (is_visible_) {
// AppListModel and AppListViewDelegate are owned by AppListView. They
// will be released with AppListView on close.
AppListView* app_list_view = new AppListView(
Shell::GetInstance()->delegate()->CreateAppListViewDelegate(),
GetPreferredBounds());
SetWidget(app_list_view->GetWidget());
}
}
bool AppList::IsVisible() {
return widget_ && widget_->IsVisible();
}
////////////////////////////////////////////////////////////////////////////////
// AppList, private:
void AppList::SetWidget(views::Widget* widget) {
DCHECK(widget_ == NULL);
if (is_visible_) {
widget_ = widget;
widget_->AddObserver(this);
Shell::GetInstance()->AddRootWindowEventFilter(this);
widget->GetNativeView()->GetRootWindow()->AddRootWindowObserver(this);
widget_->SetOpacity(0);
ScheduleAnimation();
widget_->Show();
widget_->Activate();
} else {
widget->Close();
}
}
void AppList::ResetWidget() {
if (!widget_)
return;
widget_->RemoveObserver(this);
GetLayer(widget_)->GetAnimator()->RemoveObserver(this);
Shell::GetInstance()->RemoveRootWindowEventFilter(this);
widget_->GetNativeView()->GetRootWindow()->RemoveRootWindowObserver(this);
widget_ = NULL;
}
void AppList::ScheduleAnimation() {
aura::Window* default_container = Shell::GetInstance()->GetContainer(
internal::kShellWindowId_DefaultContainer);
// |default_container| could be NULL during Shell shutdown.
if (!default_container)
return;
ui::Layer* layer = GetLayer(widget_);
// Stop observing previous animation.
StopObservingImplicitAnimations();
ui::ScopedLayerAnimationSettings app_list_animation(layer->GetAnimator());
app_list_animation.AddObserver(this);
layer->SetOpacity(is_visible_ ? 1.0 : 0.0);
ui::Layer* default_container_layer = default_container->layer();
ui::ScopedLayerAnimationSettings default_container_animation(
default_container_layer->GetAnimator());
app_list_animation.AddObserver(this);
default_container_layer->SetOpacity(is_visible_ ? 0.0 : 1.0);
}
////////////////////////////////////////////////////////////////////////////////
// AppList, aura::EventFilter implementation:
bool AppList::PreHandleKeyEvent(aura::Window* target,
aura::KeyEvent* event) {
return false;
}
bool AppList::PreHandleMouseEvent(aura::Window* target,
aura::MouseEvent* event) {
if (widget_ && is_visible_ && event->type() == ui::ET_MOUSE_PRESSED) {
aura::MouseEvent translated(*event, target, widget_->GetNativeView());
if (!widget_->GetNativeView()->ContainsPoint(translated.location()))
SetVisible(false);
}
return false;
}
ui::TouchStatus AppList::PreHandleTouchEvent(aura::Window* target,
aura::TouchEvent* event) {
return ui::TOUCH_STATUS_UNKNOWN;
}
ui::GestureStatus AppList::PreHandleGestureEvent(
aura::Window* target,
aura::GestureEvent* event) {
return ui::GESTURE_STATUS_UNKNOWN;
}
////////////////////////////////////////////////////////////////////////////////
// AppList, ura::RootWindowObserver implementation:
void AppList::OnRootWindowResized(const gfx::Size& new_size) {
if (widget_ && is_visible_)
widget_->SetBounds(gfx::Rect(new_size));
}
////////////////////////////////////////////////////////////////////////////////
// AppList, ui::ImplicitAnimationObserver implementation:
void AppList::OnImplicitAnimationsCompleted() {
if (!is_visible_ )
widget_->Close();
}
////////////////////////////////////////////////////////////////////////////////
// AppList, views::Widget::Observer implementation:
void AppList::OnWidgetClosing(views::Widget* widget) {
DCHECK(widget_ == widget);
if (is_visible_)
SetVisible(false);
ResetWidget();
}
void AppList::OnWidgetActivationChanged(views::Widget* widget, bool active) {
DCHECK(widget_ == widget);
if (widget_ && is_visible_ && !active)
SetVisible(false);
}
} // namespace internal
} // namespace ash
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