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Java > Open Source Codes > com > google > gwt > user > client > impl > HistoryImpl


1 /*
2  * Copyright 2007 Google Inc.
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License"); you may not
5  * use this file except in compliance with the License. You may obtain a copy of
6  * the License at
7  *
8  * http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
12  * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
13  * License for the specific language governing permissions and limitations under
14  * the License.
15  */
16 package com.google.gwt.user.client.impl;
17
18 import com.google.gwt.user.client.History;
19
20 /**
21  * Native implementation associated with
22  * {@link com.google.gwt.user.client.History}.
23  */
24 public abstract class HistoryImpl {
25
26   protected static void onHistoryChanged(String JavaDoc historyToken) {
27     History.onHistoryChanged(historyToken);
28   }
29
30   public native String JavaDoc getToken() /*-{
31     return $wnd.__gwt_historyToken;
32   }-*/;
33
34   public abstract boolean init();
35
36   public abstract void newItem(String JavaDoc historyToken);
37
38   protected native void setToken(String JavaDoc token) /*-{
39     $wnd.__gwt_historyToken = token;
40   }-*/;
41 }
42
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