it.eng.spagobi.studio.highchart.utils.HighChartUtils.java Source code

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Here is the source code for it.eng.spagobi.studio.highchart.utils.HighChartUtils.java

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/**
 SpagoBI, the Open Source Business Intelligence suite
    
 Copyright (C) 2012 Engineering Ingegneria Informatica S.p.A. - SpagoBI Competency Center
 This Source Code Form is subject to the terms of the Mozilla Public
 License, v. 2.0. If a copy of the MPL was not distributed with this file,
 You can obtain one at http://mozilla.org/MPL/2.0/.
     
**/
package it.eng.spagobi.studio.highchart.utils;

import it.eng.spagobi.studio.highchart.Activator;
import it.eng.spagobi.studio.highchart.configuration.HighChartConfigurations;

import java.io.IOException;
import java.io.InputStream;
import java.net.URL;
import java.util.List;

import org.dom4j.Document;
import org.dom4j.Node;
import org.dom4j.io.SAXReader;
import org.eclipse.core.runtime.Platform;
import org.osgi.framework.Bundle;

public class HighChartUtils {

    public static final String TYPE_AREA = "area";
    public static final String TYPE_BAR = "bar";
    public static final String TYPE_PIE = "pie";
    public static final String TYPE_LINE = "line";
    public static final String TYPE_SPLINE = "spline";
    public static final String TYPE_AREASPLINE = "areaspline";
    public static final String TYPE_COLUMN = "column";
    public static final String TYPE_SCATTER = "scatter";

    /** Get input stream from a resource
     * 
     * @param resourcePath
     * @return
     * @throws IOException
     */

    public static InputStream getInputStreamFromResource(String resourcePath) throws IOException {
        Bundle b = Platform.getBundle(Activator.PLUGIN_ID);
        URL res = b.getResource(resourcePath);
        InputStream is = res.openStream();
        return is;
    }

    /** Get the chart image path for the selected type
     * 
     * @param imageType
     * @return
     * @throws Exception
     */

    public static String getChartImagePath(String imageType) throws Exception {
        String toReturn = null;
        InputStream is = getInputStreamFromResource(HighChartConfigurations.INFO_FILE);
        Document document = new SAXReader().read(is);
        List charts = document.selectNodes("//HIGHCHARTS/HIGHCHART");
        if (charts == null || charts.size() == 0)
            throw new Exception("No charts configured");
        for (int i = 0; i < charts.size(); i++) {
            Node chart = (Node) charts.get(i);
            String type = chart.valueOf("@type");
            if (imageType.equalsIgnoreCase(type)) {
                String imagePath = chart.valueOf("@imagePath");
                toReturn = imagePath;
                break;
            }
        }
        return toReturn;
    }

}