org.richfaces.component.DataComponentsContextUtil Maven / Gradle / Ivy
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* Copyright 2011, Red Hat, Inc. and individual contributors
* by the @authors tag. See the copyright.txt in the distribution for a
* full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software 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 software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.richfaces.component;
import javax.faces.component.UIComponent;
import javax.faces.component.UIData;
import javax.faces.context.FacesContext;
/**
* @author Nick Belaevski
*
*/
public final class DataComponentsContextUtil {
private static final String MODEL_RESET_ATTRIBUTE_SUFFIX = "#" + DataComponentsContextUtil.class.getName();
private DataComponentsContextUtil() {
}
private static String getAttributeName(FacesContext context, UIComponent component) {
return component.getClientId(context) + MODEL_RESET_ATTRIBUTE_SUFFIX;
}
public static void resetDataModelOncePerPhase(FacesContext context, UIComponent component) {
String attributeName = getAttributeName(context, component);
if (context.getCurrentPhaseId() != context.getAttributes().put(attributeName, context.getCurrentPhaseId())) {
resetDataModel(context, component);
}
}
private static void resetDataModel(FacesContext context, UIComponent component) {
if (component instanceof UIDataAdaptor) {
((UIDataAdaptor) component).resetDataModel();
} else if (component instanceof UIData) {
// hack to reset cached data model
component.setValueExpression("value", component.getValueExpression("value"));
} else {
throw new IllegalArgumentException(component.toString());
}
}
}