001package org.gwtbootstrap3.client.ui.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 * @param <E> 037 * @return First enum constant found or default value 038 */ 039 @SuppressWarnings("unchecked") 040 public static <E extends Enum<? extends Style.HasCssName>> E fromStyleName(final String styleName, 041 final Class<E> enumClass, 042 final E defaultValue) { 043 044 if (styleName == null || enumClass == null) { 045 return defaultValue; 046 } 047 048 for (final Enum<? extends Style.HasCssName> constant : enumClass.getEnumConstants()) { 049 final Style.HasCssName anEnum = (Style.HasCssName) constant; 050 final String cssClass = anEnum.getCssName(); 051 052 if (cssClass != null && StyleHelper.containsStyle(styleName, cssClass)) { 053 return (E) anEnum; 054 } 055 } 056 057 return defaultValue; 058 } 059 060 private EnumHelper() { 061 } 062}