OutputPanelRenderer.java

/*
 * Copyright 2011-2012 Blazebit
 *
 * 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.blazebit.blazefaces.component.outputpanel;

import com.blazebit.blazefaces.apt.JsfRenderer;
import java.io.IOException;

import javax.faces.FacesException;
import javax.faces.component.UIComponent;
import javax.faces.context.FacesContext;
import javax.faces.context.ResponseWriter;

import com.blazebit.blazefaces.renderkit.CoreRenderer;

@JsfRenderer
public class OutputPanelRenderer extends CoreRenderer {

    @Override
	public void encodeEnd(FacesContext context, UIComponent component) throws IOException {
		ResponseWriter writer = context.getResponseWriter();
		OutputPanel panel = (OutputPanel) component;
        String clientId = panel.getClientId(context);
		String tagName = getLayoutTag(context, panel);
		
		writer.startElement(tagName, panel);
		writer.writeAttribute("id", clientId, "id");
		
		if(panel.getStyle() != null) {
			writer.writeAttribute("style", panel.getStyle(), "style");
		}
		if(panel.getStyleClass() != null) {
			writer.writeAttribute("class", panel.getStyleClass(), "styleClass");
		}
		
		renderChildren(context, panel);
		
		writer.endElement(tagName);
	}

    @Override
	public void encodeChildren(FacesContext context, UIComponent component) throws IOException {
		//Do nothing
	}

    @Override
	public boolean getRendersChildren() {
		return true;
	}
	
	protected String getLayoutTag(FacesContext context, OutputPanel panel) {
		String layout = panel.getLayout();
		if(layout.equalsIgnoreCase("inline"))
			return "span";
		else if(layout.equalsIgnoreCase("block"))
			return "div";
		else
			throw new FacesException("Layout type '" + layout + "' is not a valid value for OutputPanel '" + panel.getClientId(context)  + "'");
	}
	
}