/*
* Copyright 2009-2014 PrimeTek.
*
* 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.commandlink;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import javax.faces.FacesException;
import javax.faces.component.UIComponent;
import javax.faces.component.behavior.ClientBehaviorContext;
import javax.faces.context.FacesContext;
import javax.faces.context.ResponseWriter;
import javax.faces.event.ActionEvent;
import org.primefaces.component.api.ClientBehaviorRenderingMode;
import org.primefaces.context.RequestContext;
import org.primefaces.renderkit.CoreRenderer;
import org.primefaces.util.CSVBuilder;
import org.primefaces.util.ComponentUtils;
import org.primefaces.util.Constants;
import org.primefaces.util.HTML;
import org.primefaces.util.SharedStringBuilder;
public class CommandLinkRenderer extends CoreRenderer {
private static final String SB_BUILD_ONCLICK = CommandLinkRenderer.class.getName() + "#buildOnclick";
@Override
public void decode(FacesContext context, UIComponent component) {
CommandLink link = (CommandLink) component;
if(link.isDisabled()) {
return;
}
String param = component.getClientId();
if(context.getExternalContext().getRequestParameterMap().containsKey(param)) {
component.queueEvent(new ActionEvent(component));
}
decodeBehaviors(context, component);
}
@Override
public void encodeEnd(FacesContext context, UIComponent component) throws IOException {
ResponseWriter writer = context.getResponseWriter();
CommandLink link = (CommandLink) component;
String clientId = link.getClientId(context);
Object label = link.getValue();
if(!link.isDisabled()) {
String request;
boolean ajax = link.isAjax();
String styleClass = link.getStyleClass();
styleClass = styleClass == null ? CommandLink.STYLE_CLASS : CommandLink.STYLE_CLASS + " " + styleClass;
RequestContext requestContext = RequestContext.getCurrentInstance();
boolean csvEnabled = requestContext.getApplicationContext().getConfig().isClientSideValidationEnabled()&&link.isValidateClient();
StringBuilder onclick = SharedStringBuilder.get(context, SB_BUILD_ONCLICK);
if(link.getOnclick() != null) {
onclick.append(link.getOnclick()).append(";");
}
String onclickBehaviors = getEventBehaviors(context, link, "click", null);
if(onclickBehaviors != null) {
onclick.append(onclickBehaviors);
}
writer.startElement("a", link);
writer.writeAttribute("id", clientId, "id");
writer.writeAttribute("href", "#", null);
writer.writeAttribute("class", styleClass, null);
if(link.getTitle() != null) {
writer.writeAttribute("aria-label", link.getTitle(), null);
}
if(ajax) {
request = buildAjaxRequest(context, link, null);
}
else {
UIComponent form = ComponentUtils.findParentForm(context, link);
if(form == null) {
throw new FacesException("Commandlink \"" + clientId + "\" must be inside a form component");
}
request = buildNonAjaxRequest(context, link, form, clientId, true);
}
if(csvEnabled) {
CSVBuilder csvb = requestContext.getCSVBuilder();
request = csvb.init().source("this").ajax(ajax).process(link, link.getProcess()).update(link, link.getUpdate()).command(request).build();
}
onclick.append(request);
if(onclick.length() > 0) {
if(link.requiresConfirmation()) {
writer.writeAttribute("data-pfconfirmcommand", onclick.toString(), null);
writer.writeAttribute("onclick", link.getConfirmationScript(), "onclick");
}
else
writer.writeAttribute("onclick", onclick.toString(), "onclick");
}
List<ClientBehaviorContext.Parameter> behaviorParams = new ArrayList<ClientBehaviorContext.Parameter>();
behaviorParams.add(new ClientBehaviorContext.Parameter(Constants.CLIENT_BEHAVIOR_RENDERING_MODE, ClientBehaviorRenderingMode.UNOBSTRUSIVE));
String dialogReturnBehavior = getEventBehaviors(context, link, "dialogReturn", behaviorParams);
if(dialogReturnBehavior != null) {
writer.writeAttribute("data-dialogreturn", dialogReturnBehavior, null);
}
renderPassThruAttributes(context, link, HTML.LINK_ATTRS, HTML.CLICK_EVENT);
if(label != null)
writer.writeText(label, "value");
else
renderChildren(context, link);
writer.endElement("a");
}
else {
String styleClass = link.getStyleClass();
styleClass = styleClass == null ? CommandLink.DISABLED_STYLE_CLASS : CommandLink.DISABLED_STYLE_CLASS + " " + styleClass;
writer.startElement("span", link);
writer.writeAttribute("id", clientId, "id");
writer.writeAttribute("class", styleClass, "styleclass");
if(link.getStyle() != null)
writer.writeAttribute("style", link.getStyle(), "style");
if(label != null)
writer.writeText(label, "value");
else
renderChildren(context, link);
writer.endElement("span");
}
}
@Override
public void encodeChildren(FacesContext context, UIComponent component) throws IOException {
//Do Nothing
}
@Override
public boolean getRendersChildren() {
return true;
}
}