[Aura] A temp app list window.

chrome/browser/ui/views/aura/app_list_window.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 "chrome/browser/ui/views/aura/app_list_window.h"
+
+#include "chrome/browser/profiles/profile_manager.h"
+#include "chrome/browser/ui/views/dom_view.h"
+#include "content/browser/renderer_host/render_view_host.h"
+#include "content/browser/renderer_host/render_widget_host_view.h"
+#include "views/widget/widget.h"
+#include "ui/aura/desktop.h"
+#include "ui/base/animation/slide_animation.h"
+
+namespace {
+
+// The duration of the animation in milliseconds.
+const int kAnimationDurationMS = 200;
+
+// The y-axis offset used at the beginning of showing animation.
+const int kMoveUpAnimationOffset = 50;
+
+// Gets preferred position and size of app list window.
+gfx::Rect GetPreferredPosition() {
+  aura::Desktop* desktop_window = aura::Desktop::GetInstance();

[sky, 2011/10/25 17:59:27]

Go through screen instead of this. That way you can offset by the work area.

[xiyuan, 2011/10/27 22:51:29]

Done.

+  gfx::Rect widget_bounds(desktop_window->bounds());
+  widget_bounds.Inset(150, 100);
+
+  return widget_bounds;
+}
+
+}

[sky, 2011/10/25 17:59:27]

nit:  // namespace

[xiyuan, 2011/10/27 22:51:29]

Done.

+
+// static
+AppListWindow* AppListWindow::instance_ = NULL;
+
+AppListWindow::AppListWindow()
+    : widget_(NULL),
+      contents_(NULL) {
+}
+
+AppListWindow::~AppListWindow() {
+}
+
+void AppListWindow::DeleteDelegate() {
+  delete this;
+}
+
+views::View* AppListWindow::GetContentsView() {
+  return contents_;
+}
+
+void AppListWindow::WindowClosing() {
+  aura::Desktop::GetInstance()->RemoveObserver(this);
+  widget_ = NULL;
+  instance_ = NULL;
+}
+
+views::Widget* AppListWindow::GetWidget() {
+  return widget_;
+}
+
+const views::Widget* AppListWindow::GetWidget() const {
+  return widget_;
+}
+
+void AppListWindow::AnimationEnded(const ui::Animation* animation) {
+  if (animation_->GetCurrentValue() == 0)
+    widget_->Hide();
+}
+
+void AppListWindow::AnimationProgressed(const ui::Animation* animation) {
+  SetAnimationProgress(animation_->GetCurrentValue());
+}
+
+void AppListWindow::OnActiveWindowChanged(aura::Window* active) {
+  if (widget_ && !widget_->IsActive() && IsShowing())
+    Show(false /* show */, true /* animate */);
+}
+
+void AppListWindow::Init() {
+  DCHECK(!widget_ && !contents_);
+
+  contents_ = new DOMView();
+  contents_->Init(ProfileManager::GetDefaultProfile(), NULL);
+  contents_->LoadURL(GURL("chrome://newtab#applist"));
+
+  // Use a background with transparency to trigger transparent webkit.
+  SkBitmap background;
+  background.setConfig(SkBitmap::kARGB_8888_Config, 1, 1);
+  background.allocPixels();
+  background.eraseARGB(0x00, 0x00, 0x00, 0x00);
+
+  TabContents* tab = contents_->dom_contents()->tab_contents();
+  RenderViewHost* host = tab->render_view_host();
+  host->view()->SetBackground(background);
+
+  views::Widget::InitParams widget_params(
+      views::Widget::InitParams::TYPE_WINDOW_FRAMELESS);
+  widget_params.delegate = this;
+
+  widget_ = new views::Widget;

[sky, 2011/10/25 17:59:27]

Users might go a long time before using the app list, so I think we should
destroy it between uses.

[xiyuan, 2011/10/27 22:51:29]

Done. Closes the window instead of hiding now.

+  widget_->Init(widget_params);
+  widget_->SetContentsView(contents_);
+
+  aura::Desktop::GetInstance()->AddObserver(this);
+}
+
+void AppListWindow::Show(bool show, bool animated) {
+  if (animated) {
+    if (!animation_.get()) {
+      animation_.reset(new ui::SlideAnimation(this));

[sky, 2011/10/25 17:59:27]

You should be able to accomplish both of these by animating the layer directly.
The animation code is in flux right now. Currently you can get this effect by:

layer->SetAnimation(animation whose only value matters is time).
layer->SetOpacity(target_opacity);
layer->SetBounds(target_bounds);

It'll change slightly once Ian lands the animation changes, but not much.

[xiyuan, 2011/10/27 22:51:29]

Sort of done. Added a TODO to properly close window once the animation ended
notification code is landed.

+      animation_->SetSlideDuration(kAnimationDurationMS);
+      animation_->Reset(show ? 0.0 : 1.0);
+      SetAnimationProgress(animation_->GetCurrentValue());
+    }
+
+    if (show) {
+      widget_->Activate();
+      widget_->Show();
+      animation_->Show();
+    } else {
+      animation_->Hide();
+    }
+  } else {
+    SetAnimationProgress(1.0);
+
+    if (show) {
+      widget_->Activate();
+      widget_->Show();
+    } else {
+      widget_->Hide();
+    }
+  }
+}
+
+bool AppListWindow::IsShowing() const {
+  if (animation_.get() && animation_->is_animating()) {
+    return animation_->IsShowing();
+  } else {
+    return widget_->IsVisible();
+  }
+}
+
+void AppListWindow::SetAnimationProgress(double progress) {
+  widget_->SetOpacity(progress * 255);
+
+  gfx::Rect frame = GetPreferredPosition();
+  frame.Offset(0, kMoveUpAnimationOffset * (1.0 - progress));
+  widget_->SetBounds(frame);
+}
+
+// static
+void AppListWindow::Toggle() {

[sky, 2011/10/25 17:59:27]

Make order of methods match order in header.

[xiyuan, 2011/10/27 22:51:29]

Done.

+  if (!instance_) {
+    // TODO(xiyuan): Fix first time animation jankiness.
+    instance_ = new AppListWindow;
+    instance_->Init();
+  }
+
+  instance_->Show(!instance_->IsShowing(), true);
+}