[Aura] Implement views-based applist.

ui/aura_shell/examples/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 "base/basictypes.h"
+#include "ui/aura_shell/app_list/app_list_item_group_model.h"
+#include "ui/aura_shell/app_list/app_list_item_model.h"
+#include "ui/aura_shell/app_list/app_list_item_view.h"
+#include "ui/aura_shell/app_list/app_list_model.h"
+#include "ui/aura_shell/app_list/app_list_view_delegate.h"
+#include "ui/aura_shell/app_list/app_list_view.h"
+#include "ui/aura_shell/examples/example_factory.h"
+#include "ui/aura_shell/examples/toplevel_window.h"
+#include "ui/views/examples/examples_window.h"
+
+namespace aura_shell {
+namespace examples {
+
+namespace {
+
+class WindowTypeLauncherItem : public AppListItemModel {
+ public:
+  enum Type {
+    TOPLEVEL_WINDOW = 0,
+    NON_RESIZABLE_WINDOW,
+    LOCK_SCREEN,
+    WIDGETS_WINDOW,
+    EXAMPLES_WINDOW,
+    LAST_TYPE,
+  };
+
+  WindowTypeLauncherItem(Type type) : type_(type) {
+    SetIcon(GetIcon(type));
+    SetTitle(GetTitle(type));
+  }
+
+  static SkBitmap GetIcon(Type type) {
+    static const SkColor kColors[] = {
+        SkColorSetA(SK_ColorRED, 0x4F),
+        SkColorSetA(SK_ColorGREEN, 0x4F),
+        SkColorSetA(SK_ColorBLUE, 0x4F),
+        SkColorSetA(SK_ColorYELLOW, 0x4F),
+        SkColorSetA(SK_ColorCYAN, 0x4F),
+    };
+
+    SkBitmap icon;
+    icon.setConfig(SkBitmap::kARGB_8888_Config,
+                   AppListItemView::kIconSize,
+                   AppListItemView::kIconSize);
+    icon.allocPixels();
+    icon.eraseColor(kColors[static_cast<int>(type) % arraysize(kColors)]);
+    return icon;
+  }
+
+  static std::string GetTitle(Type type) {
+    switch (type) {
+      case TOPLEVEL_WINDOW:
+        return "Create Window";
+      case NON_RESIZABLE_WINDOW:
+        return "Create Non-Resizable Window";
+      case LOCK_SCREEN:
+        return "Lock Screen";
+      case WIDGETS_WINDOW:
+        return "Show Example Widgets";
+      case EXAMPLES_WINDOW:
+        return "Open Views Examples Window";
+      default:
+        return "Unknown window type.";
+    }
+  }
+
+  void Activate(int event_flags) {
+     switch (type_) {
+      case TOPLEVEL_WINDOW: {
+        ToplevelWindow::CreateParams params;
+        params.can_resize = true;
+        ToplevelWindow::CreateToplevelWindow(params);
+        break;
+      }
+      case NON_RESIZABLE_WINDOW: {
+        ToplevelWindow::CreateToplevelWindow(ToplevelWindow::CreateParams());
+        break;
+      }
+      case LOCK_SCREEN: {
+        CreateLockScreen();
+        break;
+      }
+      case WIDGETS_WINDOW: {
+        CreateWidgetsWindow();
+        break;
+      }
+      case EXAMPLES_WINDOW: {
+        views::examples::ShowExamplesWindow(false);
+        break;
+      }
+      default:
+        break;
+    }
+  }
+
+ private:
+  Type type_;
+
+  DISALLOW_COPY_AND_ASSIGN(WindowTypeLauncherItem);
+};
+
+class ExampleAppListViewDelegate : public AppListViewDelegate {
+ public:
+  ExampleAppListViewDelegate() {}
+
+ private:
+  virtual void OnAppListItemActivated(AppListItemModel* item,
+                                      int event_flags) OVERRIDE {
+    static_cast<WindowTypeLauncherItem*>(item)->Activate(event_flags);
+  }
+
+  DISALLOW_COPY_AND_ASSIGN(ExampleAppListViewDelegate);
+};
+
+AppListItemGroupModel* CreateGroup(const std::string& title,
+    WindowTypeLauncherItem::Type start_type,
+    WindowTypeLauncherItem::Type end_type) {
+  AppListItemGroupModel* group = new AppListItemGroupModel(title);
+  for (int i = static_cast<int>(start_type);
+       i < static_cast<int>(end_type);
+       ++i) {
+    WindowTypeLauncherItem::Type type =
+      static_cast<WindowTypeLauncherItem::Type>(i);
+    group->AddItem(new WindowTypeLauncherItem(type));
+  }
+  return group;
+}
+
+}  // namespace
+
+void BuildAppListModel(AppListModel* model) {
+  model->AddGroup(CreateGroup("Windows",
+      WindowTypeLauncherItem::TOPLEVEL_WINDOW,
+      WindowTypeLauncherItem::WIDGETS_WINDOW));
+  model->AddGroup(CreateGroup("Samples",
+      WindowTypeLauncherItem::WIDGETS_WINDOW,
+      WindowTypeLauncherItem::LAST_TYPE));
+}
+
+AppListViewDelegate* CreateAppListViewDelegate() {
+  return new ExampleAppListViewDelegate;
+}
+
+// TODO(xiyuan): Remove this.
+void CreateAppList(const gfx::Rect& bounds,
+                   const ShellDelegate::SetWidgetCallback& callback) {
+  AppListModel* model = new AppListModel();
+  BuildAppListModel(model);
+
+  new aura_shell::AppListView(
+      model,
+      CreateAppListViewDelegate(),
+      bounds,
+      callback);
+}
+
+}  // namespace examples
+}  // namespace aura_shell