org.apache.isis.viewer.wicket.ui.util.CssClassRemover Maven / Gradle / Ivy
/*
* 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.viewer.wicket.ui.util;
import java.util.Set;
import com.google.common.base.Joiner;
import com.google.common.base.Splitter;
import com.google.common.collect.Sets;
import org.apache.wicket.AttributeModifier;
import org.apache.wicket.behavior.AttributeAppender;
import org.apache.wicket.model.Model;
/**
* Implementation of {@link AttributeAppender} that appends the provided CSS
* class attribute.
*/
public class CssClassRemover extends AttributeModifier {
private static final long serialVersionUID = 1L;
public CssClassRemover(String cssClass) {
super("class", new Model(cssClass));
}
@Override
protected String newValue(String currentValue, String valueToRemove) {
if (currentValue == null) return "";
Set classes = Sets.newHashSet(Splitter.on(" ").split(currentValue));
classes.remove(valueToRemove);
return Joiner.on(" ").join(classes);
}
}