com.comsysto.insight.component.HighchartsPanel.java Source code

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Here is the source code for com.comsysto.insight.component.HighchartsPanel.java

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/*
 Copyright 2011 comSysto GmbH
    
 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.comsysto.insight.component;

import com.comsysto.insight.model.Highchart;
import org.apache.wicket.ResourceReference;
import org.apache.wicket.markup.html.IHeaderContributor;
import org.apache.wicket.markup.html.IHeaderResponse;
import org.apache.wicket.markup.html.WebMarkupContainer;
import org.apache.wicket.markup.html.basic.Label;
import org.apache.wicket.markup.html.panel.Panel;
import org.apache.wicket.model.AbstractReadOnlyModel;

public class HighchartsPanel extends Panel implements IHeaderContributor {

    public HighchartsPanel(String id, final Highchart highcharts) {
        super(id);

        final WebMarkupContainer chartDiv = new WebMarkupContainer("highchart");
        chartDiv.setOutputMarkupId(true);

        add(chartDiv);

        // store ID into chart.renderTo
        highcharts.getChart().setRenderTo(chartDiv.getMarkupId());

        /*
        * we inject the script in the component body and not as a header contribution
        * because the script needs to be called each time the component is refreshed using wicket
        * ajax support.
        */
        add(new Label("script", new AbstractReadOnlyModel<String>() {
            private static final long serialVersionUID = 1L;

            @Override
            public String getObject() {
                StringBuffer js = new StringBuffer();
                js.append("var ").append(chartDiv.getMarkupId()).append(";\n");
                js.append("$(document).ready(function() {\n");
                js.append(chartDiv.getMarkupId());
                js.append(" = new Highcharts.Chart(");

                js.append(highcharts.toJson());

                js.append(" ); }); ");

                return js.toString();
            }
        }).setEscapeModelStrings(false));
    }

    public void renderHead(IHeaderResponse response) {
        response.renderJavascriptReference(new ResourceReference(this.getClass(), "jquery-1.4.4.min.js"));
        response.renderJavascriptReference(new ResourceReference(this.getClass(), "highcharts.js"));
        response.renderJavascriptReference(new ResourceReference(this.getClass(), "exporting.js"));
    }

}