/**
* 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.richfaces.renderkit.html;
import java.io.IOException;
import java.util.HashMap;
import java.util.Map;
import javax.faces.application.ResourceDependencies;
import javax.faces.application.ResourceDependency;
import javax.faces.component.UIComponent;
import javax.faces.context.FacesContext;
import javax.faces.context.PartialViewContext;
import javax.faces.context.ResponseWriter;
import javax.faces.event.ActionEvent;
import org.ajax4jsf.javascript.JSFunction;
import org.ajax4jsf.javascript.JSFunctionDefinition;
import org.ajax4jsf.javascript.JSReference;
import org.richfaces.cdk.annotations.JsfRenderer;
import org.richfaces.component.AbstractPoll;
import org.richfaces.renderkit.HtmlConstants;
import org.richfaces.renderkit.RenderKitUtils;
import org.richfaces.renderkit.RendererBase;
import org.richfaces.renderkit.util.HandlersChain;
import org.richfaces.renderkit.util.RendererUtils;
/**
* @author shura
*/
@ResourceDependencies({ @ResourceDependency(library = "javax.faces", name = "jsf.js"),
@ResourceDependency(library = "org.richfaces", name = "jquery.js"),
@ResourceDependency(library = "org.richfaces", name = "richfaces.js"),
@ResourceDependency(library = "org.richfaces", name = "richfaces-queue.reslib"),
@ResourceDependency(library = "org.richfaces", name = "richfaces-base-component.js"),
@ResourceDependency(library = "org.richfaces", name = "poll.js") })
@JsfRenderer
public class AjaxPollRenderer extends RendererBase {
public static final String COMPONENT_FAMILY = "org.richfaces.Poll";
public static final String RENDERER_TYPE = "org.richfaces.PollRenderer";
private static final String AJAX_POLL_FUNCTION = "new RichFaces.ui.Poll";
private static final String ENABLED = "enabled";
private void addComponentToAjaxRender(FacesContext context, UIComponent component) {
PartialViewContext pvc = context.getPartialViewContext();
pvc.getRenderIds().add(component.getClientId(context));
}
@Override
protected void queueComponentEventForBehaviorEvent(FacesContext context, UIComponent component, String eventName) {
super.queueComponentEventForBehaviorEvent(context, component, eventName);
if (AbstractPoll.TIMER.equals(eventName)) {
new ActionEvent(component).queue();
addComponentToAjaxRender(context, component);
}
}
/*
* (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 {
RendererUtils utils = getUtils();
boolean shouldRenderForm = utils.getNestingForm(component) == null;
String rootElementName = shouldRenderForm ? HtmlConstants.DIV_ELEM : HtmlConstants.SPAN_ELEM;
AbstractPoll poll = (AbstractPoll) component;
writer.startElement(rootElementName, component);
writer.writeAttribute(HtmlConstants.STYLE_ATTRIBUTE, "display:none;", null);
utils.encodeId(context, component);
if (shouldRenderForm) {
String clientId = component.getClientId(context) + RendererUtils.DUMMY_FORM_ID;
utils.encodeBeginForm(context, component, writer, clientId);
utils.encodeEndForm(context, writer);
}
// polling script.
writer.startElement(HtmlConstants.SCRIPT_ELEM, component);
writer.writeAttribute(HtmlConstants.TYPE_ATTR, "text/javascript", null);
StringBuffer script = new StringBuffer("");
JSFunction function = new JSFunction(AJAX_POLL_FUNCTION);
Map<String, Object> options = new HashMap<String, Object>();
RenderKitUtils.addToScriptHash(options, "interval", poll.getInterval(), "1000");
// RenderKitUtils.addToScriptHash(options, "pollId", component.getClientId(context));
HandlersChain handlersChain = new HandlersChain(context, poll);
handlersChain.addInlineHandlerFromAttribute(AbstractPoll.ON_TIMER);
handlersChain.addBehaviors(AbstractPoll.TIMER);
handlersChain.addAjaxSubmitFunction();
String handler = handlersChain.toScript();
if (handler != null) {
JSFunctionDefinition timerHandler = new JSFunctionDefinition(JSReference.EVENT);
timerHandler.addToBody(handler);
options.put(AbstractPoll.ON_TIMER, timerHandler);
}
if (poll.isEnabled()) {
options.put(ENABLED, true);
}
function.addParameter(component.getClientId(context));
function.addParameter(options);
// function.appendScript(script);
writer.writeText(function.toScript(), null);
writer.endElement(HtmlConstants.SCRIPT_ELEM);
writer.endElement(rootElementName);
}
/*
* (non-Javadoc)
*
* @see org.ajax4jsf.renderkit.RendererBase#getComponentClass()
*/
protected Class<? extends UIComponent> getComponentClass() {
// only push component is allowed.
return AbstractPoll.class;
}
@Override
protected void doDecode(FacesContext context, UIComponent component) {
super.doDecode(context, component);
AbstractPoll poll = (AbstractPoll) component;
if (poll.isEnabled()) {
Map<String, String> requestParameterMap = context.getExternalContext().getRequestParameterMap();
if (requestParameterMap.get(poll.getClientId(context)) != null) {
new ActionEvent(poll).queue();
addComponentToAjaxRender(context, component);
}
}
}
}