| /* |
| * Copyright 2008 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.user.client.impl; |
| |
| /** |
| * Base class for history implementations that use a timer rather than the |
| * onhashchange event. |
| */ |
| class HistoryImplTimer extends HistoryImpl { |
| |
| @Override |
| public native boolean init() /*-{ |
| var token = ''; |
| |
| // Get the initial token from the url's hash component. |
| var hash = $wnd.location.hash; |
| if (hash.length > 0) { |
| token = this.@com.google.gwt.user.client.impl.HistoryImpl::decodeFragment(Ljava/lang/String;)(hash.substring(1)); |
| } |
| |
| @com.google.gwt.user.client.impl.HistoryImpl::setToken(Ljava/lang/String;)(token); |
| |
| // Create the timer that checks the browser's url hash every 1/4 s. |
| var historyImpl = this; |
| |
| var checkHistory = $entry(function() { |
| var token = '', hash = $wnd.location.hash; |
| if (hash.length > 0) { |
| token = historyImpl.@com.google.gwt.user.client.impl.HistoryImpl::decodeFragment(Ljava/lang/String;)(hash.substring(1)); |
| } |
| |
| historyImpl.@com.google.gwt.user.client.impl.HistoryImpl::newItemOnEvent(Ljava/lang/String;)(token); |
| }); |
| |
| var checkHistoryCycle = function() { |
| @com.google.gwt.core.client.impl.Impl::setTimeout(Lcom/google/gwt/core/client/JavaScriptObject;I)(checkHistoryCycle, 250); |
| checkHistory(); |
| } |
| |
| // Kick off the timer. |
| checkHistoryCycle(); |
| return true; |
| }-*/; |
| } |