Mirror app list hierarchy data in profile prefs.

chrome/browser/ui/app_list/model_pref_updater.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 "chrome/browser/ui/app_list/model_pref_updater.h"
+
+#include "chrome/browser/ui/app_list/app_list_prefs.h"
+#include "chrome/browser/ui/app_list/extension_app_item.h"
+#include "ui/app_list/app_list_folder_item.h"
+#include "ui/app_list/app_list_item.h"
+#include "ui/app_list/app_list_model.h"
+
+namespace app_list {
+
+ModelPrefUpdater::ModelPrefUpdater(AppListPrefs* app_list_prefs,
+                                   AppListModel* model)
+    : app_list_prefs_(app_list_prefs), model_(model) {
+  model_->AddObserver(this);
+}
+
+ModelPrefUpdater::~ModelPrefUpdater() {
+  model_->RemoveObserver(this);
+}
+
+void ModelPrefUpdater::OnAppListItemAdded(AppListItem* item) {
+  UpdatePrefsFromAppListItem(item);
+}
+
+void ModelPrefUpdater::OnAppListItemWillBeDeleted(AppListItem* item) {
+  app_list_prefs_->DeleteAppListInfo(item->id());
+}
+
+void ModelPrefUpdater::OnAppListItemUpdated(AppListItem* item) {
+  UpdatePrefsFromAppListItem(item);
+}
+
+void ModelPrefUpdater::UpdatePrefsFromAppListItem(AppListItem* item) {
+  // Write synced data to local pref.
+  AppListPrefs::AppListInfo info;
+  if (item->GetItemType() == AppListFolderItem::kItemType)
+    info.item_type = AppListPrefs::AppListInfo::FOLDER_ITEM;
+  else if (item->GetItemType() == ExtensionAppItem::kItemType)
+    info.item_type = AppListPrefs::AppListInfo::APP_ITEM;
+  else
+    NOTREACHED();
+
+  info.parent_id = item->folder_id();
+  info.position = item->position();
+  info.name = item->name();
+
+  app_list_prefs_->SetAppListInfo(item->id(), info);
+}
+
+}  // namespace app_list