/*
* 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.control;
import java.io.IOException;
import java.util.Locale;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import de.odysseus.calyxo.base.I18nSupport;
import de.odysseus.calyxo.base.ModuleContext;
import de.odysseus.calyxo.control.conf.DispatchConfig;
import de.odysseus.calyxo.control.impl.DefaultDispatcher;
import de.odysseus.calyxo.panels.PanelsContext;
import de.odysseus.calyxo.panels.PanelsSupport;
import de.odysseus.calyxo.panels.conf.PanelConfig;
/**
* Panels dispatcher implementation.
*
* This dispatcher modifies the standard behaviour for
* {@link de.odysseus.calyxo.control.conf.DispatchConfig} elements with
* the <code>path</code> property set. It searches for a toplevel
* panel element with <code>panel.name == dispatch.path</code>. If
* it finds one, it creates a panels context stack in request scope,
* pushes the panel and dispatches to <code>panel.path</code>.
*
* @author Christoph Beck
*/
public class PanelsDispatcher extends DefaultDispatcher {
private PanelsSupport support;
private I18nSupport i18n;
public PanelsDispatcher(ModuleContext context) {
super(context);
support = PanelsSupport.getInstance(context);
i18n = I18nSupport.getInstance(context);
}
/* (non-Javadoc)
* @see de.odysseus.calyxo.control.Dispatcher#dispatch(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse, de.odysseus.calyxo.control.conf.DispatchConfig)
*/
public void dispatch(
HttpServletRequest request,
HttpServletResponse response,
DispatchConfig dispatch)
throws IOException, ServletException {
if (dispatch.getPath() != null && !dispatch.isRedirect()) {
Locale locale = i18n.getLocale(request);
// lookup panel
PanelConfig panel = support.findPanelConfig(dispatch.getPath(), locale);
if (panel != null) {
if (log.isTraceEnabled())
log.trace("panel " + panel.getName());
String template = panel.findTemplate(locale);
if (template == null) {
throw new ServletException("Could not find path for panel " + panel.toInlineString());
}
template = addParams(template, dispatch, "UTF-8");
// log.debug("path " + path);
PanelsContext context = support.getOrCreateContext(request, locale);
// log.debug("push " + panel.getName());
context.push(panel);
// add dispatch parameters to current panel
// Iterator params = dispatch.getParamConfigs();
// while (params.hasNext()) {
// ParamConfig param = (ParamConfig)params.next();
// context.addParamConfig(
// new DynamicParamConfig(param.getName(), param.getValue())
// );
// }
try {
dispatch(request, response, template, false);
} finally {
// log.debug("pop " + panel.getName());
context.pop();
}
return;
}
}
super.dispatch(request, response, dispatch);
}
}