/**
* License Agreement.
*
* Rich Faces - Natural Ajax for Java Server Faces (JSF)
*
* Copyright (C) 2007 Exadel, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License version 2.1 as published by the Free Software Foundation.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
package org.ajax4jsf.renderkit.html;
import java.io.IOException;
import java.util.Map;
import javax.faces.component.UIComponent;
import javax.faces.context.FacesContext;
import javax.faces.context.ResponseWriter;
import org.ajax4jsf.component.UIPoll;
import org.ajax4jsf.javascript.JSFunction;
import org.ajax4jsf.javascript.JSFunctionDefinition;
import org.ajax4jsf.renderkit.AjaxCommandRendererBase;
import org.ajax4jsf.renderkit.AjaxRendererUtils;
import org.ajax4jsf.renderkit.RendererUtils.HTML;
/**
* @author shura
*
*/
public class AjaxPollRenderer extends AjaxCommandRendererBase {
private static final String AJAX_POLL_FUNCTION = "A4J.AJAX.Poll";
/* (non-Javadoc)
* @see org.ajax4jsf.renderkit.RendererBase#doEncodeEnd(javax.faces.context.ResponseWriter, javax.faces.context.FacesContext, javax.faces.component.UIComponent)
*/
protected void doEncodeEnd(ResponseWriter writer, FacesContext context, UIComponent component) throws IOException {
UIPoll poll = (UIPoll) component;
writer.startElement(HTML.SPAN_ELEM, component);
writer.writeAttribute(HTML.style_ATTRIBUTE, "display:none;", null);
getUtils().encodeId(context, component);
// polling script.
writer.startElement(HTML.SCRIPT_ELEM, component);
writer.writeAttribute(HTML.TYPE_ATTR, "text/javascript", null);
StringBuffer script = new StringBuffer("\n");
if(poll.isEnabled()){
JSFunction function = AjaxRendererUtils.buildAjaxFunction(component, context, AJAX_POLL_FUNCTION);
Map options = AjaxRendererUtils.buildEventOptions(context, component);
Integer interval = new Integer(poll.getInterval());
options.put("pollinterval", interval);
options.put("pollId", component.getClientId(context));
Object onsubmit = component.getAttributes().get("onsubmit");
if (null != onsubmit) {
JSFunctionDefinition onsubmitFunction = new JSFunctionDefinition();
onsubmitFunction.addToBody(onsubmit);
options.put("onsubmit", onsubmitFunction);
}
// options.put("timeout", interval);
function.addParameter(options);
function.appendScript(script);
} else {
script.append("A4J.AJAX.StopPoll('").append(component.getClientId(context)).append("')");
}
script.append(";\n");
writer.writeText(script.toString(),null);
writer.endElement(HTML.SCRIPT_ELEM);
writer.endElement(HTML.SPAN_ELEM);
}
/* (non-Javadoc)
* @see org.ajax4jsf.renderkit.RendererBase#getComponentClass()
*/
protected Class getComponentClass() {
// only poll component is allowed.
return UIPoll.class;
}
protected boolean isSubmitted(FacesContext facesContext, UIComponent uiComponent) {
boolean submitted = super.isSubmitted(facesContext, uiComponent);
UIPoll poll = (UIPoll) uiComponent;
poll.setSubmitted(submitted);
return submitted;
}
}