001/*
002 * #%L
003 * GwtMaterial
004 * %%
005 * Copyright (C) 2015 - 2017 GwtMaterialDesign
006 * %%
007 * Licensed under the Apache License, Version 2.0 (the "License");
008 * you may not use this file except in compliance with the License.
009 * You may obtain a copy of the License at
010 * 
011 *      http://www.apache.org/licenses/LICENSE-2.0
012 * 
013 * Unless required by applicable law or agreed to in writing, software
014 * distributed under the License is distributed on an "AS IS" BASIS,
015 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
016 * See the License for the specific language governing permissions and
017 * limitations under the License.
018 * #L%
019 */
020package gwt.material.design.client.base;
021
022public interface HasError {
023
024    /**
025     * Errors occur when an app fails to complete what is expected, such as:
026     * - The app does not understand user input
027     * - The system or app fails
028     * - A user intends to run incompatible operations concurrently
029     */
030    void setError(String error);
031
032    /**
033     * Set the success message marking a widget as success.
034     */
035    void setSuccess(String success);
036
037    /**
038     * Apply a widgets help text.
039     */
040    void setHelperText(String helperText);
041
042    /**
043     * Clear the error or success states.
044     */
045    void clearErrorOrSuccess();
046}