Refactor LauncherDelegate

ash/launcher/ash_launcher_delegate.cc

+// Copyright 2013 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/launcher/ash_launcher_delegate.h"
+
+#include "ash/launcher/app_list_launcher_item_delegate.h"
+#include "ash/launcher/launcher_item_delegate.h"
+
+namespace ash {
+namespace internal {
+
+AshLauncherDelegate::AshLauncherDelegate() {
+  app_list_item_delegate_.reset(new AppListLauncherItemDelegate);
+}
+
+AshLauncherDelegate::~AshLauncherDelegate() {}
+
+LauncherID AshLauncherDelegate::GetIDByWindow(aura::Window* window) {
+  return 0;
+}
+
+void AshLauncherDelegate::OnLauncherCreated(Launcher* launcher) {
+  // Do nothing.
+}
+
+void AshLauncherDelegate::OnLauncherDestroyed(Launcher* launcher) {
+  // Do nothing.
+}
+
+LauncherID AshLauncherDelegate::GetLauncherIDForAppID(
+    const std::string& app_id) {
+  NOTREACHED();
+  return 0;
+}
+
+void AshLauncherDelegate::PinAppWithID(const std::string& app_id) {
+  NOTREACHED();
+  // Do nothing.
+}
+
+bool AshLauncherDelegate::IsAppPinned(const std::string& app_id) {
+  NOTREACHED();
+  return false;
+}
+
+void AshLauncherDelegate::UnpinAppsWithID(const std::string& app_id) {
+  NOTREACHED();
+  // Do nothing.
+}
+
+LauncherItemDelegate* AshLauncherDelegate::GetLauncherItemDelegate(
+    const LauncherItem& item) {
+  if (item.type == TYPE_APP_LIST)
+    return app_list_item_delegate_.get();
+
+  NOTREACHED();
+  return NULL;
+}
+
+}  // namespace internal
+}  // namespace ash