| // Copyright 2004 The Apache Software Foundation |
| // |
| // 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 org.apache.tapestry.event; |
| |
| import java.util.EventListener; |
| |
| /** |
| * An interface for objects that want to take part in the validation of the page. |
| * |
| * @author Mindbridge |
| * @version $Id$ |
| * @since 3.0 |
| **/ |
| |
| public interface PageValidateListener extends EventListener |
| { |
| /** |
| * Invoked by the page from its |
| * {@link org.apache.tapestry.IPage#validate(org.apache.tapestry.IRequestCycle)} method. |
| * |
| * <p>May throw a {@link org.apache.tapestry.PageRedirectException}, to redirect the user |
| * to an appropriate part of the system (such as, a login page). |
| **/ |
| |
| public void pageValidate(PageEvent event); |
| } |