org.primefaces.extensions.component.gchart.GChartRenderer Maven / Gradle / Ivy

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package org.primefaces.extensions.component.gchart;


import com.google.gson.Gson;
import com.google.gson.GsonBuilder;
import org.primefaces.extensions.component.gchart.model.GChartModel;
import org.primefaces.extensions.component.gchart.model.GChartModelRow;
import org.primefaces.extensions.util.ExtWidgetBuilder;
import org.primefaces.json.JSONArray;
import org.primefaces.json.JSONObject;
import org.primefaces.renderkit.CoreRenderer;
import org.primefaces.util.WidgetBuilder;

import javax.faces.component.UIComponent;
import javax.faces.context.FacesContext;
import javax.faces.context.ResponseWriter;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Collection;


public class GChartRenderer extends CoreRenderer {

	public static final String RENDERER_TYPE = "org.primefaces.extensions.component.GChartRenderer";
    private static final Gson GSON = new GsonBuilder().create();

	public void decode(FacesContext context, UIComponent component) {
		super.decode(context, component);
		decodeBehaviors(context, component);
	}
	
	@Override
	public void encodeEnd(FacesContext context, UIComponent component) throws IOException {
		GChart gChart = (GChart) component;

		encodeMarkup(context, gChart);
		encodeScript(context, gChart);
	}

	protected void encodeMarkup(FacesContext context, GChart chart)	throws IOException {
		ResponseWriter writer = context.getResponseWriter();
		
		writer.startElement("input", chart);
		writer.writeAttribute("id", chart.getClientId() + "_hidden",null);
		writer.writeAttribute("name",chart.getClientId() + "_hidden", null);
		writer.writeAttribute("type", "hidden", null);
		writer.endElement("input");

		writer.startElement("div", chart);
		writer.writeAttribute("id", chart.getClientId(), null);
		writer.endElement("div");
		
		this.startScript(writer, chart.getClientId());
		writer.writeAttribute("src", "https://www.google.com/jsapi", null);
		this.endScript(writer);
		
	}

	protected void encodeScript(FacesContext context, GChart chart) throws IOException {

		String clientId = chart.getClientId();
		String widgetVar = chart.resolveWidgetVar();

        ExtWidgetBuilder ewb = ExtWidgetBuilder.get(context);

		ewb.init("GChart", widgetVar, clientId);

		ewb.attr("chart", this.escapeText(((GChartModel) chart.getValue()).toJson()));
		ewb.attr("title", chart.getTitle());
		ewb.attr("width", chart.getWidth());
		ewb.attr("height", chart.getHeight());
		
		encodeClientBehaviors(context, chart);
		
		ewb.finish();
	}
}