/* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.apache.isis.core.metamodel.facets.members.cssclassfa;
import java.util.Set;
import java.util.regex.Pattern;
import com.google.common.base.Joiner;
import com.google.common.base.Splitter;
import com.google.common.collect.Sets;
import org.apache.isis.core.metamodel.facetapi.Facet;
import org.apache.isis.core.metamodel.facetapi.FacetHolder;
import org.apache.isis.core.metamodel.facets.SingleStringValueFacetAbstract;
public class CssClassFaFacetAbstract extends SingleStringValueFacetAbstract implements CssClassFaFacet {
private static final Pattern WHITESPACE = Pattern.compile("\\s+");
private CssClassFaPosition position;
public CssClassFaFacetAbstract(final String value, final CssClassFaPosition position,
final FacetHolder holder) {
super(type(), holder, sanitize(value));
this.position = position;
}
@Override
public CssClassFaPosition getPosition() {
return position;
}
/**
* Adds the optional <em>fa</em> and <em>fa-fw</em> FontAwesome classes
*
* @param value The original CSS classes defined with {@literal @}
* {@link org.apache.isis.applib.annotation.CssClassFa CssClassFa}
* @return The original CSS classes plus <em>fa</em> and <em>fa-fw</em> if not already provided
*/
static String sanitize(final String value) {
final Iterable<String> classes = Splitter.on(WHITESPACE).split(value.trim());
final Set<String> cssClassesSet = Sets.newLinkedHashSet();
cssClassesSet.add("fa");
cssClassesSet.add("fa-fw");
for (final String cssClass : classes) {
cssClassesSet.add(faPrefix(cssClass));
}
return Joiner.on(' ').join(cssClassesSet).trim();
}
private static String faPrefix(final String cssClass) {
return cssClass.startsWith("fa-") || "fa".equals(cssClass)
? cssClass
: "fa-" + cssClass;
}
public static Class<? extends Facet> type() {
return CssClassFaFacet.class;
}
}