/*
* Copyright 2010 Lincoln Baxter, III
*
* 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 com.ocpsoft.pretty.faces.beans;
import java.util.List;
import javax.faces.application.NavigationHandler;
import javax.faces.context.FacesContext;
import javax.faces.event.PhaseId;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import com.ocpsoft.pretty.PrettyContext;
import com.ocpsoft.pretty.PrettyException;
import com.ocpsoft.pretty.faces.config.mapping.UrlAction;
import com.ocpsoft.pretty.faces.config.mapping.UrlMapping;
import com.ocpsoft.pretty.faces.util.FacesElUtils;
import com.ocpsoft.pretty.faces.util.FacesMessagesUtils;
import com.ocpsoft.pretty.faces.util.FacesStateUtils;
import com.ocpsoft.pretty.faces.util.PhaseIdComparator;
/**
* @author Lincoln Baxter, III <lincoln@ocpsoft.com>
*/
public class ActionExecutor
{
private static final Log log = LogFactory.getLog(ActionExecutor.class);
private static final FacesElUtils elUtils = new FacesElUtils();
private final FacesMessagesUtils mu = new FacesMessagesUtils();
public void executeActions(final FacesContext context, final PhaseId currentPhaseId, final UrlMapping mapping)
{
List<UrlAction> actions = mapping.getActions();
for (UrlAction action : actions)
{
if (shouldExecute(action, currentPhaseId, FacesStateUtils.isPostback(context)))
{
try
{
PrettyContext prettyContext = PrettyContext.getCurrentInstance(context);
log.trace("Invoking method: " + action + ", on request: " + prettyContext.getRequestURL());
Object result = elUtils.invokeMethod(context, action.getAction().getELExpression());
if (result != null)
{
mu.saveMessages(context, context.getExternalContext().getSessionMap());
String outcome = result.toString();
if (!"".equals(outcome))
{
NavigationHandler handler = context.getApplication().getNavigationHandler();
handler.handleNavigation(context, prettyContext.getCurrentViewId(), outcome);
}
return;
}
}
catch (Exception e)
{
throw new PrettyException("Exception occurred while processing <" + mapping.getId() + ":"
+ action.getAction() + "> " + e.getMessage(), e);
}
}
}
}
boolean shouldExecute(final UrlAction action, final PhaseId currentPhaseId, final boolean isPostback)
{
boolean result = false;
if (PhaseIdComparator.equals(action.getPhaseId(), currentPhaseId)
|| PhaseIdComparator.equals(action.getPhaseId(), PhaseId.ANY_PHASE))
{
if (action.onPostback())
{
result = true;
}
else
{
if (!isPostback)
{
result = true;
}
}
}
return result;
}
}