org.primefaces.visit.ResetInputVisitCallback Maven / Gradle / Ivy
/**
* Copyright 2009-2018 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.visit;
import javax.el.ValueExpression;
import javax.faces.component.EditableValueHolder;
import javax.faces.component.UIComponent;
import javax.faces.component.visit.VisitCallback;
import javax.faces.component.visit.VisitContext;
import javax.faces.component.visit.VisitResult;
public class ResetInputVisitCallback implements VisitCallback {
public static final ResetInputVisitCallback INSTANCE = new ResetInputVisitCallback();
public static final ResetInputVisitCallback INSTANCE_CLEAR_MODEL = new ResetInputVisitCallback(true);
private final boolean clearModel;
public ResetInputVisitCallback() {
this.clearModel = false;
}
public ResetInputVisitCallback(boolean clearModel) {
this.clearModel = clearModel;
}
@Override
public VisitResult visit(VisitContext context, UIComponent target) {
if (target instanceof EditableValueHolder) {
EditableValueHolder input = (EditableValueHolder) target;
input.resetValue();
if (clearModel) {
ValueExpression ve = target.getValueExpression("value");
if (ve != null) {
ve.setValue(context.getFacesContext().getELContext(), null);
}
}
}
return VisitResult.ACCEPT;
}
}