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package org.apache.velocity.app.event;
import org.apache.velocity.context.Context;
/*
* 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.
*/
/**
* Event handler for include type directives (e.g. #include()
, #parse()
)
* Allows the developer to modify the path of the resource returned.
*
* @author Will Glass-Husain
* @version $Id$
* @since 1.5
*/
public interface IncludeEventHandler extends EventHandler
{
/**
* Called when an include-type directive is encountered (
* #include
or #parse
). May modify the path
* of the resource to be included or may block the include entirely. All the
* registered IncludeEventHandlers are called unless null is returned. If
* none are registered the template at the includeResourcePath is retrieved.
*
* @param context current context
* @param includeResourcePath the path as given in the include directive.
* @param currentResourcePath the path of the currently rendering template that includes the
* include directive.
* @param directiveName name of the directive used to include the resource. (With the
* standard directives this is either "parse" or "include").
*
* @return a new resource path for the directive, or null to block the
* include from occurring.
*/
String includeEvent(Context context, String includeResourcePath, String currentResourcePath, String directiveName);
}