/**
* Copyright 2005-2013 hdiv.org
*
* 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.hdiv.validators;
import java.util.Map;
import javax.faces.component.UICommand;
import javax.faces.component.UIComponent;
import javax.faces.component.UIData;
import javax.faces.component.UIParameter;
import javax.faces.context.FacesContext;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.hdiv.components.UIParameterExtension;
import org.hdiv.util.HDIVErrorCodes;
import org.hdiv.util.UtilsJsf;
import org.hdiv.validation.ValidationError;
/**
* ComponentValidator that validates parameters of a component of type UICommand,
*
* @author Gotzon Illarramendi
*/
public class UICommandValidator implements ComponentValidator {
private static Log log = LogFactory.getLog(UICommandValidator.class);
/*
* (non-Javadoc)
*
* @see org.hdiv.validators.ComponentValidator#validate(javax.faces.context.FacesContext,
* javax.faces.component.UIComponent)
*/
public ValidationError validate(FacesContext context, UIComponent component) {
UICommand command = (UICommand) component;
// Search parent components of type UIData
UIData uiDataComp = UtilsJsf.findParentUIData(command);
int rowIndex = 0;
if (uiDataComp != null) {
rowIndex = uiDataComp.getRowIndex();
}
// Check CommandLink's parameters
for (UIComponent childComp : component.getChildren()) {
if (childComp instanceof UIParameter) {
UIParameter param = (UIParameter) childComp;
ValidationError error = this.processParam(context, param, rowIndex);
if (error != null) {
return error;
}
}
}
return null;
}
/**
* Validates a parameter of component UICommand
*
* @param context
* Request context
* @param parameter
* UIParameter component to validate
* @param rowIndex
* index that shows where it is the UICommand component inside a UIData
* @return validation result
*/
private ValidationError processParam(FacesContext context, UIParameter parameter, int rowIndex) {
UIParameterExtension param = (UIParameterExtension) parameter;
UIComponent parent = parameter.getParent();
String parentClientId = parent.getClientId(context);
Map<String, String> requestMap = context.getExternalContext().getRequestParameterMap();
String requestValue = requestMap.get(param.getName());
String realValue;
if (rowIndex < 0) {
// May be -1 when commandLink finds a facet in a table,
// in the footer for example
// In these cases value has been stored in the 0 position
rowIndex = 0;
}
realValue = param.getValue(parentClientId).toString();
if (log.isDebugEnabled()) {
log.debug("requestValue:" + requestValue);
log.debug("realValue:" + realValue);
}
if (requestValue == null) {
ValidationError error = new ValidationError();
error.setErrorKey(HDIVErrorCodes.REQUIRED_PARAMETERS);
error.setErrorParam(param.getId());
error.setErrorValue(requestValue);
error.setErrorComponent(param.getClientId(context));
return error;
}
if (!requestValue.equals(realValue)) {
ValidationError error = new ValidationError();
error.setErrorKey(HDIVErrorCodes.PARAMETER_VALUE_INCORRECT);
error.setErrorParam(param.getId());
error.setErrorValue(requestValue);
error.setErrorComponent(param.getClientId(context));
return error;
}
return null;
}
}