Revert 115515 - [Aura] Implement views-based applist.

ui/aura_shell/app_list/app_list.cc

-// 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/app_list.h"
-
-#include "base/bind.h"
-#include "base/command_line.h"
-#include "ui/aura/event.h"
-#include "ui/aura/window.h"
-#include "ui/aura_shell/app_list/app_list_model.h"
-#include "ui/aura_shell/app_list/app_list_view.h"
-#include "ui/aura_shell/aura_shell_switches.h"
-#include "ui/aura_shell/shell_delegate.h"
-#include "ui/aura_shell/shell.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(100, 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()) {
-    if (CommandLine::ForCurrentProcess()->HasSwitch(
-            switches::kAuraViewsAppList)) {
-      scoped_ptr<AppListModel> model(new AppListModel);
-      Shell::GetInstance()->delegate()->BuildAppListModel(model.get());
-
-      // AppListModel and AppListViewDelegate are owned by AppListView. They
-      // will be released with AppListView on close.
-      new AppListView(
-          model.release(),
-          Shell::GetInstance()->delegate()->CreateAppListViewDelegate(),
-          GetPreferredBounds(false),
-          base::Bind(&AppList::SetWidget, set_widget_factory_.GetWeakPtr()));
-    } else {
-      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()->AddRootWindowEventFilter(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()->RemoveRootWindowEventFilter(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