/**
* Copyright (C) 2014 JBoss 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 org.dashbuilder.renderer.google.client;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import javax.enterprise.context.ApplicationScoped;
import javax.inject.Named;
import com.googlecode.gwt.charts.client.ChartLoader;
import com.googlecode.gwt.charts.client.ChartPackage;
import org.dashbuilder.displayer.DisplayerSettings;
import org.dashbuilder.displayer.DisplayerType;
import org.dashbuilder.displayer.client.AbstractRendererLibrary;
import org.dashbuilder.displayer.client.Displayer;
/**
* Google's Visualization API based renderer.
*/
@ApplicationScoped
@Named(GoogleRenderer.UUID + "_renderer")
public class GoogleRenderer extends AbstractRendererLibrary {
public static final String UUID = "google";
public String getUUID() {
return UUID;
}
public Displayer lookupDisplayer(DisplayerSettings displayerSettings) {
DisplayerType displayerType = displayerSettings.getType();
if ( DisplayerType.BARCHART.equals(displayerType)) return new GoogleBarChartDisplayer();
if ( DisplayerType.PIECHART.equals(displayerType)) return new GooglePieChartDisplayer();
if ( DisplayerType.AREACHART.equals(displayerType)) return new GoogleAreaChartDisplayer();
if ( DisplayerType.LINECHART.equals(displayerType)) return new GoogleLineChartDisplayer();
if ( DisplayerType.BUBBLECHART.equals(displayerType)) return new GoogleBubbleChartDisplayer();
if ( DisplayerType.METERCHART.equals(displayerType)) return new GoogleMeterChartDisplayer();
if ( DisplayerType.TABLE.equals(displayerType)) return new GoogleTableDisplayer();
if ( DisplayerType.MAP.equals(displayerType)) return new GoogleMapDisplayer();
return null;
}
/**
* In Google the renderer mechanism is asynchronous.
*/
public void draw(final List<Displayer> displayerList) {
// Get the modules to load.
Set<ChartPackage> packageList = new HashSet<ChartPackage>();
for (Displayer displayer : displayerList) {
try {
GoogleDisplayer googleDisplayer = (GoogleDisplayer ) displayer;
packageList.add( googleDisplayer.getPackage());
} catch (ClassCastException e) {
// Just ignore non Google displayers.
}
}
// Create an array of packages.
ChartPackage[] packageArray = new ChartPackage[packageList.size()];
int i = 0;
for (ChartPackage pkg : packageList) {
packageArray[i++] = pkg;
}
// Load the visualization API
ChartLoader chartLoader = new ChartLoader(packageArray);
chartLoader.loadApi(new Runnable() {
// Called when the visualization API has been loaded.
public void run() {
GoogleRenderer.super.draw(displayerList);
}
});
}
}