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// Copyright (c) 2011 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 "ui/aura_shell/app_list.h"
#include "base/bind.h"
#include "ui/aura/event.h"
#include "ui/aura/window.h"
#include "ui/aura_shell/shell.h"
#include "ui/aura_shell/shell_delegate.h"
#include "ui/aura_shell/shell_window_ids.h"
#include "ui/gfx/screen.h"
namespace aura_shell {
namespace internal {
namespace {
// Gets preferred bounds of app list window in show/hide state.
gfx::Rect GetPreferredBounds(bool show) {
// The y-axis offset used at the beginning of showing animation.
static const int kMoveUpAnimationOffset = 50;
gfx::Point cursor = gfx::Screen::GetCursorScreenPoint();
gfx::Rect work_area = gfx::Screen::GetMonitorWorkAreaNearestPoint(cursor);
gfx::Rect widget_bounds(work_area);
widget_bounds.Inset(150, 100);
if (!show)
widget_bounds.Offset(0, kMoveUpAnimationOffset);
return widget_bounds;
}
ui::Layer* GetLayer(views::Widget* widget) {
return widget->GetNativeView()->layer();
}
} // namespace
////////////////////////////////////////////////////////////////////////////////
// AppList, public:
AppList::AppList()
: aura::EventFilter(NULL),
is_visible_(false),
widget_(NULL),
ALLOW_THIS_IN_INITIALIZER_LIST(set_widget_factory_(this)) {
}
AppList::~AppList() {
ResetWidget();
}
void AppList::SetVisible(bool visible) {
if (visible == is_visible_)
return;
is_visible_ = visible;
if (widget_) {
ScheduleAnimation();
} else if (is_visible_ && !set_widget_factory_.HasWeakPtrs()) {
Shell::GetInstance()->delegate()->RequestAppListWidget(
GetPreferredBounds(false),
base::Bind(&AppList::SetWidget, set_widget_factory_.GetWeakPtr()));
}
}
bool AppList::IsVisible() {
return widget_ && widget_->IsVisible();
}
////////////////////////////////////////////////////////////////////////////////
// AppList, private:
void AppList::SetWidget(views::Widget* widget) {
DCHECK(widget_ == NULL);
set_widget_factory_.InvalidateWeakPtrs();
if (is_visible_) {
widget_ = widget;
widget_->AddObserver(this);
GetLayer(widget_)->GetAnimator()->AddObserver(this);
Shell::GetInstance()->AddDesktopEventFilter(this);
widget_->SetBounds(GetPreferredBounds(false));
widget_->SetOpacity(0);
ScheduleAnimation();
widget_->Show();
} else {
widget->Close();
}
}
void AppList::ResetWidget() {
if (!widget_)
return;
widget_->RemoveObserver(this);
GetLayer(widget_)->GetAnimator()->RemoveObserver(this);
Shell::GetInstance()->RemoveDesktopEventFilter(this);
widget_ = NULL;
}
void AppList::ScheduleAnimation() {
ui::Layer* layer = GetLayer(widget_);
ui::LayerAnimator::ScopedSettings app_list_animation(layer->GetAnimator());
layer->SetBounds(GetPreferredBounds(is_visible_));
layer->SetOpacity(is_visible_ ? 1.0 : 0.0);
ui::Layer* default_container_layer = Shell::GetInstance()->GetContainer(
internal::kShellWindowId_DefaultContainer)->layer();
ui::LayerAnimator::ScopedSettings default_container_animation(
default_container_layer->GetAnimator());
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;
}
////////////////////////////////////////////////////////////////////////////////
// AppList, ui::LayerAnimationObserver implementation:
void AppList::OnLayerAnimationEnded(
const ui::LayerAnimationSequence* sequence) {
if (!is_visible_ )
widget_->Close();
}
void AppList::OnLayerAnimationAborted(
const ui::LayerAnimationSequence* sequence) {
}
void AppList::OnLayerAnimationScheduled(
const ui::LayerAnimationSequence* sequence) {
}
////////////////////////////////////////////////////////////////////////////////
// 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 aura_shell
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