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/*
 * Copyright 2011 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
 * use this file except in compliance with the License. You may obtain a copy of
 * the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations under
 * the License.
 */

package com.google.gwt.storage.client;

/**
 * Implementation of Storage with non-native events.
 *
 * 

* Implementation of StorageEvents is incomplete for many browsers. This class * amends the properties consistently with W3C's StorageEvent. *

*/ class StorageImplNonNativeEvents extends StorageImpl { private static native StorageEvent createStorageEvent( String key, String oldValue, String newValue, String storage) /*-{ return { key: key, oldValue: oldValue, newValue: newValue, storage: storage, storageArea: $wnd[storage], url: $wnd.location.href }; }-*/; private static void fireStorageEvent( String key, String oldValue, String newValue, String storage) { if (hasStorageEventHandlers()) { StorageEvent se = createStorageEvent(key, oldValue, newValue, storage); handleStorageEvent(se); } } @Override public void clear(String storage) { super.clear(storage); fireStorageEvent(null, null, null, storage); } @Override public void removeItem(String storage, String key) { String oldValue = getItem(storage, key); super.removeItem(storage, key); fireStorageEvent(key, oldValue, null, storage); } @Override public void setItem(String storage, String key, String data) { String oldValue = getItem(storage, key); super.setItem(storage, key, data); fireStorageEvent(key, oldValue, data, storage); } @Override protected void addStorageEventHandler0() { // no-op } @Override protected void removeStorageEventHandler0() { // no-op } }




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