/*
* 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.extensions.markup.html.tabs;
import org.apache.wicket.markup.html.WebMarkupContainer;
import org.apache.wicket.model.IModel;
/**
* A simple decorator that will cache the panel returned from the first call to getPanel()
*
* @see org.apache.wicket.extensions.markup.html.tabs.ITab
* @see org.apache.wicket.extensions.markup.html.tabs.TabbedPanel
*
* @author Igor Vaynberg (ivaynberg)
*/
public class PanelCachingTab implements ITab
{
private static final long serialVersionUID = 1L;
// Might Panel or Fragment or ...
private WebMarkupContainer panel;
private final ITab delegate;
/**
* Constructor
*
* @param delegate
* ITab implementation to decorate
*/
public PanelCachingTab(final ITab delegate)
{
this.delegate = delegate;
}
/**
* {@inheritDoc}
*/
@Override
public IModel<String> getTitle()
{
return delegate.getTitle();
}
/**
* {@inheritDoc}
*/
@Override
public WebMarkupContainer getPanel(final String panelId)
{
if (panel == null)
{
panel = delegate.getPanel(panelId);
}
return panel;
}
/**
* {@inheritDoc}
*/
@Override
public boolean isVisible()
{
return delegate.isVisible();
}
}