| /******************************************************************************* |
| * Copyright (c) 2000, 2004 IBM Corporation and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.ui.forms.widgets; |
| import org.eclipse.swt.widgets.Composite; |
| /** |
| * Classes that extend abstract class Layout and implement this interface can |
| * take part in layout computation of the TableWrapLayout manager. This layout |
| * uses alternative algorithm that computes columns before rows. It allows it |
| * to 'flow' wrapped text proportionally (similar to the way web browser |
| * renders tables). Custom layout managers that implement this interface will |
| * allow TableWrapLayout to properly compute width hint to pass. |
| * |
| * @see TableWrapLayout |
| * @see ColumnLayout |
| * @since 3.0 |
| */ |
| public interface ILayoutExtension { |
| /** |
| * Computes the minimum width of the parent. All widgets capable of word |
| * wrapping should return the width of the longest word that cannot be |
| * broken any further. |
| * |
| * @param parent the parent composite |
| * @param changed <code>true</code> if the cached information should be |
| * flushed, <code>false</code> otherwise. |
| * @return the minimum width of the parent composite |
| */ |
| public int computeMinimumWidth(Composite parent, boolean changed); |
| /** |
| * Computes the maximum width of the parent. All widgets capable of word |
| * wrapping should return the length of the entire text with wrapping |
| * turned off. |
| * |
| * @param parent the parent composite |
| * @param changed <code>true</code> if the cached information |
| * should be flushed, <code>false</code> otherwise. |
| * @return the maximum width of the parent composite |
| */ |
| public int computeMaximumWidth(Composite parent, boolean changed); |
| } |
