/*
* Copyright 2017 OmniFaces
*
* 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.omnifaces.component.validator;
import static org.omnifaces.util.Utils.isEmpty;
import java.util.List;
import javax.faces.component.FacesComponent;
import javax.faces.component.UIInput;
import javax.faces.context.FacesContext;
import org.omnifaces.validator.MultiFieldValidator;
/**
* <p>
* The <code><o:validateAllOrNone></code> validates if at least ALL of the given {@link UIInput} components have
* been filled out or that NONE of the given <code>UIInput</code> components have been filled out.
* <p>
* The default message is
* <blockquote>{0}: Please fill out all or none of those fields</blockquote>
* <p>
* For general usage instructions, refer {@link ValidateMultipleFields} documentation.
*
* @author Bauke Scholtz
* @see ValidateMultipleFields
* @see ValidatorFamily
* @see MultiFieldValidator
*/
@FacesComponent(ValidateAllOrNone.COMPONENT_TYPE)
public class ValidateAllOrNone extends ValidateMultipleFields {
// Public constants -----------------------------------------------------------------------------------------------
/** The standard component type. */
public static final String COMPONENT_TYPE = "org.omnifaces.component.validator.ValidateAllOrNone";
// Actions --------------------------------------------------------------------------------------------------------
/**
* Validate if all or none is filled out.
*/
@Override
public boolean validateValues(FacesContext context, List<UIInput> inputs, List<Object> values) {
boolean hasValue = false;
boolean hasNoValue = false;
for (Object value : values) {
boolean currentHasValue = !isEmpty(value);
hasValue |= currentHasValue;
hasNoValue |= !currentHasValue;
}
return (hasValue != hasNoValue);
}
/**
* In an invalidating case, invalidate only those inputs which have an empty value.
*/
@Override
protected boolean shouldInvalidateInput(FacesContext context, UIInput input, Object value) {
return isEmpty(value);
}
}