/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. 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. For additional information regarding
* copyright in this work, please see the NOTICE file in the top level
* directory of this distribution.
*/
package org.apache.roller.weblogger.ui.struts2.util;
import com.opensymphony.xwork2.ActionContext;
import com.opensymphony.xwork2.ActionInvocation;
import com.opensymphony.xwork2.interceptor.AbstractInterceptor;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.roller.weblogger.ui.struts2.editor.EntryAdd;
import org.apache.roller.weblogger.ui.struts2.editor.EntryAddWithMediaFile;
import org.apache.roller.weblogger.ui.struts2.editor.EntryEdit;
/**
* A struts2 interceptor for doing custom prepare logic.
*/
public class UIActionPrepareInterceptor extends AbstractInterceptor {
private static Log log = LogFactory.getLog(UIActionPrepareInterceptor.class);
public String intercept(ActionInvocation invocation) throws Exception {
log.debug("Entering UIActionPrepareInterceptor");
final Object action = invocation.getAction();
final ActionContext context = invocation.getInvocationContext();
// is this one of our own UIAction classes?
if (action instanceof UIActionPreparable) {
log.debug("action is UIActionPreparable, calling myPrepare() method");
// The EntryAdd->EntryEdit chain is the one place where we need
// to pass a parameter along the chain, thus this somewhat ugly hack
if (invocation.getStack().getRoot().size() > 1) {
Object action0= invocation.getStack().getRoot().get(0);
Object action1 = invocation.getStack().getRoot().get(1);
if (action0 instanceof EntryEdit && action1 instanceof EntryAdd) {
EntryEdit editAction = (EntryEdit)action0;
EntryAdd addAction = (EntryAdd)action1;
editAction.getBean().setId(addAction.getBean().getId());
} else if (action0 instanceof EntryAdd && action1 instanceof EntryAddWithMediaFile) {
EntryAdd addAction = (EntryAdd)action0;
EntryAddWithMediaFile mediaAction = (EntryAddWithMediaFile)action1;
addAction.setBean(mediaAction.getBean());
}
}
UIActionPreparable theAction = (UIActionPreparable) action;
theAction.myPrepare();
}
return invocation.invoke();
}
}