/*
* Copyright 2004, 2005, 2006 Odysseus Software GmbH
*
* Licensed 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 de.odysseus.calyxo.panels.misc;
import javax.servlet.http.HttpServletRequest;
import de.odysseus.calyxo.base.ModuleContext;
import de.odysseus.calyxo.base.access.AccessException;
import de.odysseus.calyxo.base.access.DynamicMapAccessor;
import de.odysseus.calyxo.base.access.AccessorMap;
import de.odysseus.calyxo.panels.PanelsContext;
import de.odysseus.calyxo.panels.PanelsSupport;
import de.odysseus.calyxo.panels.conf.ParamConfig;
/**
* This accessor contains a <code>param</code> child to access
* panel parameters.
*
* @author Christoph Beck
*/
public class PanelsAccessor extends AccessorMap {
/**
* Lookup parameter within current panels context stack.
*
* @author Christoph Beck
*/
public class ParamAccessor extends DynamicMapAccessor {
/**
* Lookup parameter.
*/
protected Object get(HttpServletRequest request, Object key) {
PanelsContext context = support.getContext(request);
ParamConfig param = context.lookupParamConfig(key.toString());
if (param == null) {
throw new AccessException("Unknown panel parameter '" + key + "'");
}
if (!param.isDefined()) {
throw new AccessException("Undefined value for panel parameter '" + key + "'");
}
return param.getValue();
}
}
final PanelsSupport support;
public PanelsAccessor(ModuleContext context) {
super();
support = PanelsSupport.getInstance(context);
put("param", new ParamAccessor());
}
}