001package gwt.material.design.client.base.helper;
002
003/*
004 * #%L
005 * GwtBootstrap3
006 * %%
007 * Copyright (C) 2013 GwtBootstrap3
008 * %%
009 * Licensed under the Apache License, Version 2.0 (the "License");
010 * you may not use this file except in compliance with the License.
011 * You may obtain a copy of the License at
012 * 
013 *      http://www.apache.org/licenses/LICENSE-2.0
014 * 
015 * Unless required by applicable law or agreed to in writing, software
016 * distributed under the License is distributed on an "AS IS" BASIS,
017 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
018 * See the License for the specific language governing permissions and
019 * limitations under the License.
020 * #L%
021 */
022
023import com.google.gwt.dom.client.Style;
024
025/**
026 * @author Sven Jacobs
027 */
028public final class EnumHelper {
029
030    /**
031     * Returns first enum constant found in at space-separated list of style names.
032     *
033     * @param styleName    Space-separated list of styles
034     * @param enumClass    Type of enum
035     * @param defaultValue Default value of no match was found
036     * @return First enum constant found or default value
037     */
038    public static <E extends Enum<? extends Style.HasCssName>> E fromStyleName(final String styleName,
039                                                                               final Class<E> enumClass,
040                                                                               final E defaultValue) {
041        return EnumHelper.fromStyleName(styleName, enumClass, defaultValue, false);
042    }
043
044    /**
045     * Returns first enum constant found in at space-separated list of style names.
046     *
047     * @param styleName    Space-separated list of styles
048     * @param enumClass    Type of enum
049     * @param defaultValue Default value of no match was found
050     * @return First enum constant found or default value
051     */
052    @SuppressWarnings("unchecked")
053    public static <E extends Enum<? extends Style.HasCssName>> E fromStyleName(final String styleName,
054                                                                               final Class<E> enumClass,
055                                                                               final E defaultValue,
056                                                                               final boolean ignoreSpaces) {
057        if (styleName == null || enumClass == null) {
058            return defaultValue;
059        }
060
061        for (final Enum<? extends Style.HasCssName> constant : enumClass.getEnumConstants()) {
062            final Style.HasCssName anEnum = (Style.HasCssName) constant;
063            final String cssClass = anEnum.getCssName();
064
065            if(cssClass != null) {
066                boolean contains;
067                if (ignoreSpaces) {
068                    contains = styleName.equals(cssClass);
069                } else {
070                    contains = StyleHelper.containsStyle(styleName, cssClass);
071                }
072                if (contains) {
073                    return (E) anEnum;
074                }
075            }
076        }
077        return defaultValue;
078    }
079
080    private EnumHelper() {
081    }
082}