com.google.gwt.storage.client.StorageImplNonNativeEvents Maven / Gradle / Ivy
/*
* 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
}
}