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PrimeFaces is one of the most popular UI libraries in Java EE Ecosystem and widely used by software companies, world renowned brands, banks, financial institutions, insurance companies, universities and more.
/**
* 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.context;
import java.util.logging.Logger;
import javax.faces.component.EditableValueHolder;
import javax.faces.component.visit.VisitContext;
import javax.faces.context.FacesContext;
import javax.faces.context.PartialResponseWriter;
import javax.faces.context.PartialViewContext;
import javax.faces.context.PartialViewContextWrapper;
import javax.faces.event.PhaseId;
import org.primefaces.expression.SearchExpressionConstants;
import org.primefaces.util.ComponentUtils;
import org.primefaces.util.Constants;
import org.primefaces.visit.ResetInputContextCallback;
import org.primefaces.visit.ResetInputVisitCallback;
public class PrimePartialViewContext extends PartialViewContextWrapper {
private static final Logger LOG = Logger.getLogger(PrimePartialViewContext.class.getName());
private PartialViewContext wrapped;
private PartialResponseWriter writer = null;
public PrimePartialViewContext(PartialViewContext wrapped) {
this.wrapped = wrapped;
}
@Override
public PartialViewContext getWrapped() {
return this.wrapped;
}
@Override
public void processPartial(PhaseId phaseId) {
if (phaseId == PhaseId.RENDER_RESPONSE) {
FacesContext context = FacesContext.getCurrentInstance();
resetValues(context);
}
getWrapped().processPartial(phaseId);
}
@Override
public void setPartialRequest(boolean value) {
getWrapped().setPartialRequest(value);
}
@Override
public PartialResponseWriter getPartialResponseWriter() {
if (writer == null) {
PartialResponseWriter parentWriter = getWrapped().getPartialResponseWriter();
writer = new PrimePartialResponseWriter(parentWriter);
}
return writer;
}
@Override
public boolean isAjaxRequest() {
return getWrapped().isAjaxRequest()
|| FacesContext.getCurrentInstance().getExternalContext().getRequestParameterMap().containsKey("javax.faces.partial.ajax");
}
@Override
public boolean isPartialRequest() {
return getWrapped().isPartialRequest()
|| FacesContext.getCurrentInstance().getExternalContext().getRequestParameterMap().containsKey("javax.faces.partial.execute");
}
/**
* Visit the current renderIds and, if the component is
* an instance of {@link EditableValueHolder},
* call its {@link EditableValueHolder#resetValue} method.
* Use {@link #visitTree} to do the visiting.
*
* @param context The current {@link FacesContext}.
*/
private void resetValues(FacesContext context) {
Object resetValuesObject = context.getExternalContext().getRequestParameterMap().get(Constants.RequestParams.RESET_VALUES_PARAM);
boolean resetValues = (null != resetValuesObject && "true".equals(resetValuesObject));
if (resetValues) {
VisitContext visitContext = null;
ResetInputContextCallback contextCallback = null;
for (String renderId : context.getPartialViewContext().getRenderIds()) {
if (ComponentUtils.isValueBlank(renderId) || renderId.trim().equals(SearchExpressionConstants.NONE_KEYWORD)) {
continue;
}
// lazy init
if (visitContext == null) {
visitContext = VisitContext.createVisitContext(context, null, ComponentUtils.VISIT_HINTS_SKIP_UNRENDERED);
}
if (renderId.equals(SearchExpressionConstants.ALL_KEYWORD)) {
context.getViewRoot().visitTree(visitContext, ResetInputVisitCallback.INSTANCE);
}
else {
// lazy init
if (contextCallback == null) {
contextCallback = new ResetInputContextCallback(visitContext);
}
context.getViewRoot().invokeOnComponent(context, renderId, contextCallback);
}
}
}
}
}