/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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 org.apache.wicket.examples.websocket.charts;
import java.util.ArrayList;
import java.util.List;
import org.apache.wicket.markup.head.HeaderItem;
import org.apache.wicket.markup.head.JavaScriptHeaderItem;
import org.apache.wicket.protocol.ws.api.WicketWebSocketJQueryResourceReference;
import org.apache.wicket.request.Url;
import org.apache.wicket.request.resource.JavaScriptResourceReference;
import org.apache.wicket.request.resource.UrlResourceReference;
/**
* A resource reference that contributes 'charts.js' - the JavaScript that registers the WebSocket client
* and constructs the Google chart.
*/
public class ChartsResourceReference extends JavaScriptResourceReference
{
public ChartsResourceReference()
{
super(ChartsResourceReference.class, "charts.js");
}
/**
* Specify that charts.js depends on Google JS APIs and Wicket WebSocket JavaScript
* @return a list of dependencies
*/
@Override
public List<HeaderItem> getDependencies()
{
List<HeaderItem> dependencies = new ArrayList<HeaderItem>();
dependencies.add(JavaScriptHeaderItem.forReference(new UrlResourceReference(Url.parse("https://www.google.com/jsapi"))));
dependencies.add(JavaScriptHeaderItem.forReference(WicketWebSocketJQueryResourceReference.get()));
return dependencies;
}
}