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Java > Open Source Codes > org > eclipse > ui > internal > layout > ICachingLayout


1 /*******************************************************************************
2  * Copyright (c) 2004, 2006 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  * IBM Corporation - initial API and implementation
10  *******************************************************************************/
11
12 package org.eclipse.ui.internal.layout;
13
14 import org.eclipse.swt.widgets.Control;
15
16 /**
17  * Layouts that implement this interface are capable of caching the
18  * sizes of child controls in a manner that allows the information
19  * for a single control to be flushed without affecting the remaining
20  * controls. These layouts will ignore the "changed" arguments to layout(...)
21  * and computeSize(...), however they will flush their cache for individual
22  * controls when the flush(...) method is called.
23  * <p>
24  * This allows for much more efficient layouts, since most of the cache
25  * can be reused when a child control changes.
26  * </p>
27  *
28  * @since 3.0
29  */
30 public interface ICachingLayout {
31     /**
32      * Flushes cached data for the given control
33      */
34     public void flush(Control dirtyControl);
35 }
36
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