org.springframework.faces.ui.RendererUtils Maven / Gradle / Ivy
/*
* Copyright 2004-2008 the original author or authors.
*
* 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.springframework.faces.ui;
import javax.faces.FacesException;
import javax.faces.component.UIComponent;
import javax.faces.component.UIForm;
import javax.faces.component.UIViewRoot;
import javax.faces.context.FacesContext;
/**
* Helper class for common renderer functionality.
*
* @author Jeremy Grelle
*
*/
class RendererUtils {
public static String getFormId(FacesContext context, UIComponent component) {
if (component.getParent() instanceof UIForm) {
return component.getParent().getClientId(context);
} else if (component.getParent() instanceof UIViewRoot) {
throw new FacesException("Could not render " + component.getClass().getName() + " component with id "
+ component.getId() + " - no enclosing UIForm was found.");
} else {
return getFormId(context, component.getParent());
}
}
}