/*
* 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.panels;
import com.google.common.base.Strings;
import org.apache.wicket.markup.head.CssHeaderItem;
import org.apache.wicket.markup.head.CssReferenceHeaderItem;
import org.apache.wicket.markup.head.IHeaderResponse;
import org.apache.wicket.request.resource.CssResourceReference;
import org.apache.isis.viewer.wicket.ui.selector.links.LinksSelectorPanelAbstract;
public final class PanelUtil {
private PanelUtil(){}
/**
* The contribution to the header performed implicitly by {@link PanelAbstract}.
*
* <p>
* Factored out for reuse by {@link LinksSelectorPanelAbstract}.
*/
public static void renderHead(final IHeaderResponse response, final Class<?> cls) {
final CssResourceReference cssResourceReference = cssResourceReferenceFor(cls);
if(cssResourceReference == null) {
return;
}
final CssReferenceHeaderItem forReference = CssHeaderItem.forReference(cssResourceReference);
response.render(forReference);
}
public static CssResourceReference cssResourceReferenceFor(final Class<?> cls) {
return cssResourceReferenceFor(cls, null);
}
public static CssResourceReference cssResourceReferenceFor(final Class<?> cls, final String suffix) {
final String url = cssFor(cls, suffix);
if(url == null) {
return null;
}
return new CssResourceReference(cls, url);
}
private static String cssFor(final Class<?> cls, String suffix) {
if(cls == null) {
return null;
}
String simpleName = cls.getSimpleName();
if(Strings.isNullOrEmpty(simpleName)) {
return null; // eg inner classes
}
String string;
if (suffix != null) {
string = ("-" + suffix);
} else {
string = "";
}
return simpleName + string + ".css";
}
}