org.primefaces.component.outputlabel.OutputLabelRenderer Maven / Gradle / Ivy
/*
* Copyright 2009-2013 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.outputlabel;
import java.io.IOException;
import javax.el.ValueExpression;
import javax.faces.component.UIComponent;
import javax.faces.component.UIInput;
import javax.faces.context.FacesContext;
import javax.faces.context.ResponseWriter;
import org.primefaces.component.api.InputHolder;
import org.primefaces.expression.SearchExpressionFacade;
import org.primefaces.renderkit.CoreRenderer;
import org.primefaces.util.ComponentUtils;
import org.primefaces.util.HTML;
public class OutputLabelRenderer extends CoreRenderer {
@Override
public void encodeEnd(FacesContext context, UIComponent component) throws IOException {
ResponseWriter writer = context.getResponseWriter();
OutputLabel label = (OutputLabel) component;
String clientId = label.getClientId();
String value = ComponentUtils.getValueToRender(context, label);
UIComponent target = null;
String targetClientId = null;
UIInput input = null;
String styleClass = label.getStyleClass();
styleClass = styleClass == null ? OutputLabel.STYLE_CLASS : OutputLabel.STYLE_CLASS + " " + styleClass;
String _for = label.getFor();
if(_for != null) {
target = SearchExpressionFacade.resolveComponent(context, label, _for);
targetClientId = (target instanceof InputHolder) ? ((InputHolder) target).getInputClientId() : target.getClientId(context);
if(target instanceof UIInput) {
input = (UIInput) target;
if(value != null && (input.getAttributes().get("label") == null || input.getValueExpression("label") == null)) {
ValueExpression ve = label.getValueExpression("value");
if(ve != null) {
input.setValueExpression("label", ve);
}
else {
String labelString = value;
int colonPos = labelString.lastIndexOf(":");
if(colonPos != -1) {
labelString = labelString.substring(0, colonPos);
}
input.getAttributes().put("label", labelString);
}
}
if(!input.isValid()) {
styleClass = styleClass + " ui-state-error";
}
}
}
writer.startElement("label", label);
writer.writeAttribute("id", clientId, "id");
writer.writeAttribute("class", styleClass, "id");
renderPassThruAttributes(context, label, HTML.LABEL_ATTRS);
if(target != null) {
writer.writeAttribute("for", targetClientId, "for");
}
if(value != null) {
if(label.isEscape())
writer.writeText(value, "value");
else
writer.write(value);
}
renderChildren(context, label);
if(input != null && input.isRequired()) {
writer.startElement("span", label);
writer.writeAttribute("class", OutputLabel.REQUIRED_FIELD_INDICATOR_CLASS, null);
writer.write("*");
writer.endElement("span");
}
writer.endElement("label");
}
@Override
public void encodeChildren(FacesContext context, UIComponent component) throws IOException {
//Do nothing
}
@Override
public boolean getRendersChildren() {
return true;
}
}