/**
* Copyright 2005-2010 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.webflow.validator;
import java.util.Hashtable;
import java.util.Iterator;
import org.springframework.validation.Errors;
import org.springframework.validation.Validator;
import org.springframework.webflow.context.ExternalContext;
import org.springframework.webflow.context.ExternalContextHolder;
/**
* Validation to visualize the errors produced in the editable fields detected
* by HDIV.
*
* @author Gorka Vicente
* @since HDIV 2.0.3
*/
public class EditableParameterValidator implements Validator {
/**
* The request attributes key under HDIV should store errors produced in the
* editable fields.
*/
private static final String EDITABLE_PARAMETER_ERROR = "org.hdiv.action.EDITABLE_PARAMETER_ERROR";
/**
* Property that contains the error message to be shown when the value
* of the editable parameter is not valid.
*/
private static final String HDIV_EDITABLE_ERROR = "hdiv.editable.error";
/**
* Property that contains the error message to be shown when the value
* of the editable password parameter is not valid.
*/
private static final String HDIV_EDITABLE_PASSWORD_ERROR = "hdiv.editable.password.error";
public boolean supports(Class arg0) {
return true;
}
public void validate(Object obj, Errors errors) {
validateEditableParameters(obj, errors);
}
/**
* Obtains the errors from request detected by HDIV during the validation
* process of the editable parameters.
*
* @param formObject form object
* @param errors errors detected by HDIV during the validation process of
* the editable parameters.
*/
public void validateEditableParameters(Object formObject, Errors errors) {
ExternalContext externalContext = ExternalContextHolder.getExternalContext();
Hashtable editableParameters =
(Hashtable) externalContext.getRequestMap().get(EDITABLE_PARAMETER_ERROR);
if ((editableParameters != null) && (editableParameters.size() > 0)) {
for (Iterator it = editableParameters.keySet().iterator(); it.hasNext();) {
String currentParameter = (String) it.next();
String[] currentUnauthorizedValues = (String[]) editableParameters.get(currentParameter);
if ((currentUnauthorizedValues.length == 1)
&& (currentUnauthorizedValues[0].equals(HDIV_EDITABLE_PASSWORD_ERROR))) {
errors.rejectValue(currentParameter, HDIV_EDITABLE_PASSWORD_ERROR);
} else {
String printedValue = this.createMessageError(currentUnauthorizedValues);
errors.rejectValue(currentParameter, HDIV_EDITABLE_ERROR, new String[] { printedValue },
printedValue + " has not allowed characters");
}
}
}
}
/**
* It creates the message error from the values <code>values</code>.
*
* @param values values with not allowed characters
* @return message error to show
*/
public String createMessageError(String[] values) {
StringBuffer printedValue = new StringBuffer();
for (int i = 0; i < values.length; i++) {
if (i > 0)
printedValue.append(", ");
if (values[i].length() > 20)
printedValue.append(values[i].substring(0, 20) + "...");
else
printedValue.append(values[i]);
if (printedValue.length() > 20)
break;
}
return printedValue.toString();
}
}