/*
* 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.parser.filter;
import java.nio.charset.Charset;
import org.apache.wicket.Component;
import org.apache.wicket.MarkupContainer;
import org.apache.wicket.markup.ComponentTag;
import org.apache.wicket.markup.IMarkupCacheKeyProvider;
import org.apache.wicket.markup.IMarkupFragment;
import org.apache.wicket.markup.IMarkupResourceStreamProvider;
import org.apache.wicket.markup.MarkupException;
import org.apache.wicket.markup.MarkupStream;
import org.apache.wicket.markup.html.panel.AbstractMarkupSourcingStrategy;
import org.apache.wicket.markup.html.panel.IMarkupSourcingStrategy;
import org.apache.wicket.util.resource.IResourceStream;
import org.apache.wicket.util.resource.StringResourceStream;
/**
* https://issues.apache.org/jira/browse/WICKET-4494
* @see HtmlHandlerTest
*/
public class CustomMarkupLabel
extends MarkupContainer
implements IMarkupCacheKeyProvider, IMarkupResourceStreamProvider
{
private static final String SAMPLE_MARKUP = "<img alt='logo' src='logo.png'><br>Some text<br>Some more text";
public CustomMarkupLabel(final String id)
{
super(id);
}
@Override
protected IMarkupSourcingStrategy newMarkupSourcingStrategy()
{
return new MyMarkupSourcingStrategy(this);
}
@Override
public IResourceStream getMarkupResourceStream(MarkupContainer container, Class<?> containerClass)
{
// the markup is loaded from database in our real application
StringResourceStream res = new StringResourceStream(SAMPLE_MARKUP);
res.setCharset(Charset.forName("UTF-8"));
return res;
}
@Override
public String getCacheKey(MarkupContainer container, Class<?> containerClass)
{
return null;
}
//
// custom markup sourcing strategy
//
private static class MyMarkupSourcingStrategy extends AbstractMarkupSourcingStrategy
{
private final CustomMarkupLabel markupProvider;
public MyMarkupSourcingStrategy(final CustomMarkupLabel markupProvider)
{
this.markupProvider = markupProvider;
}
@Override
public void onComponentTagBody(Component component, MarkupStream markupStream, ComponentTag openTag)
{
super.onComponentTagBody(component, markupStream, openTag);
//
MarkupStream stream = new MarkupStream(getMarkup((MarkupContainer)component, null));
component.onComponentTagBody(stream, openTag);
}
@Override
public IMarkupFragment getMarkup(final MarkupContainer container, final Component child)
{
IMarkupFragment markup = markupProvider.getAssociatedMarkup();
if (markup == null)
{
throw new MarkupException("The EntityText has no markup!");
}
//
if (child == null)
{
return markup;
}
// search for the child insight the fragment markup
return markup.find(child.getId());
}
}
}