/*
* Copyright 2010 Prime Technology.
*
* 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.primefaces.component.watermark;
import java.io.IOException;
import javax.faces.FacesException;
import javax.faces.component.UIComponent;
import javax.faces.context.FacesContext;
import javax.faces.context.ResponseWriter;
import org.primefaces.renderkit.CoreRenderer;
import org.primefaces.util.ComponentUtils;
public class WatermarkRenderer extends CoreRenderer {
public void encodeEnd(FacesContext context, UIComponent component) throws IOException {
ResponseWriter writer = context.getResponseWriter();
Watermark watermark = (Watermark) component;
String target = null;
if(watermark.getFor() != null) {
String _for = watermark.getFor();
UIComponent forComponent = watermark.findComponent(_for);
if(forComponent == null) {
throw new FacesException("Cannot find component \"" + _for + "\" in view.");
}
target = ComponentUtils.escapeJQueryId(forComponent.getClientId(context));
} else if(watermark.getForElement() != null) {
target = watermark.getForElement();
} else {
throw new FacesException("Either for or forElement options must be used to define a watermark");
}
writer.startElement("script", null);
writer.writeAttribute("type", "text/javascript", null);
writer.write("jQuery(function() {");
writer.write("jQuery('" + target + "').watermark('" + watermark.getValue() + "', {className:'ui-watermark'});");
writer.write("});");
writer.endElement("script");
}
}