/*
* 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.wicket.markup.head;
import java.util.ArrayList;
import java.util.List;
import java.util.Objects;
import org.apache.wicket.request.Response;
/**
* {@link HeaderItem} that has priority over other header items. {@code PriorityHeaderItem}s
* rendered parent-first at the beginning of the header. Dependencies of a
* {@code PriorityHeaderItem} also have priority.
*
* @author papegaaij
*/
public class PriorityHeaderItem extends HeaderItem implements IWrappedHeaderItem
{
private HeaderItem wrapped;
/**
* Construct.
*
* @param wrapped
* the actual {@link HeaderItem} that should have priority
*/
public PriorityHeaderItem(HeaderItem wrapped)
{
this.wrapped = wrapped;
}
/**
* @return the actual {@link HeaderItem}
*/
@Override
public HeaderItem getWrapped()
{
return wrapped;
}
@Override
public PriorityHeaderItem wrap(HeaderItem item)
{
return new PriorityHeaderItem(item);
}
@Override
public Iterable<?> getRenderTokens()
{
return getWrapped().getRenderTokens();
}
@Override
public void render(Response response)
{
getWrapped().render(response);
}
@Override
public List<HeaderItem> getDependencies()
{
List<PriorityHeaderItem> ret = new ArrayList<>();
for (HeaderItem curDependency : getWrapped().getDependencies())
{
ret.add(wrap(curDependency));
}
List<HeaderItem> dependencies = super.getDependencies();
dependencies.addAll(ret);
return dependencies;
}
@Override
public Iterable<? extends HeaderItem> getProvidedResources()
{
return getWrapped().getProvidedResources();
}
@Override
public boolean equals(Object o)
{
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
PriorityHeaderItem that = (PriorityHeaderItem) o;
return Objects.equals(wrapped, that.wrapped);
}
@Override
public int hashCode()
{
return Objects.hash(wrapped);
}
@Override
public String toString()
{
return "PriorityHeaderItem(" + getWrapped() + ")";
}
}