/*
* Copyright 2011 SWM Services GmbH.
*
* 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 de.swm.commons.mobile.client.validation;
import com.google.gwt.user.client.ui.HasValue;
import de.swm.commons.mobile.client.widgets.ErrorLabel;
/**
* Implementations of this interface are responsible to display the error output of registered components. In one case
* may all elements of one form will share one error output instance, in another case may one field has
* exactly one corresponding error output element. One default implementation is {@link ErrorLabel}
*
* @author wiese.daniel <br>
* copyright (C) 2012, SWM Services GmbH
*/
public interface IErrorOutputElement {
/**
* Appends a new error message.
*
* @param producer the component which is producing this message.
* @param errorMessageToAppend the message to append
*/
void appendErrorMessage(HasValue<?> producer, String errorMessageToAppend);
/**
* Clears all error messages of the specified component.
*/
void clearErrorMessage();
}