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Java > Open Source Codes > org > eclipse > jface > dialogs > IPageChangingListener


1 /*******************************************************************************
2  * Copyright (c) 2006, 2007 IBM Corporation and others.
3  * All rights reserved. This program and the accompanying materials
4  * are made available under the terms of the Eclipse Public License v1.0
5  * which accompanies this distribution, and is available at
6  * http://www.eclipse.org/legal/epl-v10.html
7  *
8  * Contributors:
9  * Chris Gross (schtoo@schtoo.com) - initial API and implementation for bug 16179
10  * IBM Corporation - revisions to initial contribution
11  *******************************************************************************/
12 package org.eclipse.jface.dialogs;
13
14 /**
15  * A listener which is notified when the current page of a multi-page dialog is
16  * changing. Use this listener to perform long-running work that should only be
17  * executed once, when the page is in the process of changing, rather then
18  * during validation of page controls.
19  *
20  * @see PageChangingEvent
21  * @since 3.3
22  */
23 public interface IPageChangingListener {
24     
25     /**
26      * Handle the an <code>IDialogPage</code> changing.
27      *
28      * The <code>doit</code> field of the <code>PageChangingEvent</code>
29      * must be set to false to prevent the page from changing.
30      *
31      * @param event
32      * event object describing the change
33      */
34     public void handlePageChanging(PageChangingEvent event);
35
36 }
37
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