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| 1 | +/* | |
| 2 | + * Copyright (c) 1995, 2005, Oracle and/or its affiliates. All rights reserved. | |
| 3 | + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | |
| 4 | + * | |
| 5 | + * This code is free software; you can redistribute it and/or modify it | |
| 6 | + * under the terms of the GNU General Public License version 2 only, as | |
| 7 | + * published by the Free Software Foundation. Oracle designates this | |
| 8 | + * particular file as subject to the "Classpath" exception as provided | |
| 9 | + * by Oracle in the LICENSE file that accompanied this code. | |
| 10 | + * | |
| 11 | + * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 12 | + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 13 | + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 14 | + * version 2 for more details (a copy is included in the LICENSE file that | |
| 15 | + * accompanied this code). | |
| 16 | + * | |
| 17 | + * You should have received a copy of the GNU General Public License version | |
| 18 | + * 2 along with this work; if not, write to the Free Software Foundation, | |
| 19 | + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 20 | + * | |
| 21 | + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | |
| 22 | + * or visit www.oracle.com if you need additional information or have any | |
| 23 | + * questions. | |
| 24 | + */ | |
| 25 | +package java.awt; | |
| 26 | + | |
| 27 | +/** | |
| 28 | + * Defines the interface for classes that know how to lay out | |
| 29 | + * <code>Container</code>s. | |
| 30 | + * <p> | |
| 31 | + * Swing's painting architecture assumes the children of a | |
| 32 | + * <code>JComponent</code> do not overlap. If a | |
| 33 | + * <code>JComponent</code>'s <code>LayoutManager</code> allows | |
| 34 | + * children to overlap, the <code>JComponent</code> must override | |
| 35 | + * <code>isOptimizedDrawingEnabled</code> to return false. | |
| 36 | + * | |
| 37 | + * @see Container | |
| 38 | + * @see javax.swing.JComponent#isOptimizedDrawingEnabled | |
| 39 | + * | |
| 40 | + * @author Sami Shaio | |
| 41 | + * @author Arthur van Hoff | |
| 42 | + */ | |
| 43 | +public interface LayoutManager { | |
| 44 | + /** | |
| 45 | + * If the layout manager uses a per-component string, | |
| 46 | + * adds the component <code>comp</code> to the layout, | |
| 47 | + * associating it | |
| 48 | + * with the string specified by <code>name</code>. | |
| 49 | + * | |
| 50 | + * @param name the string to be associated with the component | |
| 51 | + * @param comp the component to be added | |
| 52 | + */ | |
| 53 | + void addLayoutComponent(String name, Component comp); | |
| 54 | + | |
| 55 | + /** | |
| 56 | + * Removes the specified component from the layout. | |
| 57 | + * @param comp the component to be removed | |
| 58 | + */ | |
| 59 | + void removeLayoutComponent(Component comp); | |
| 60 | + | |
| 61 | + /** | |
| 62 | + * Calculates the preferred size dimensions for the specified | |
| 63 | + * container, given the components it contains. | |
| 64 | + * @param parent the container to be laid out | |
| 65 | + * | |
| 66 | + * @see #minimumLayoutSize | |
| 67 | + */ | |
| 68 | + Dimension preferredLayoutSize(Container parent); | |
| 69 | + | |
| 70 | + /** | |
| 71 | + * Calculates the minimum size dimensions for the specified | |
| 72 | + * container, given the components it contains. | |
| 73 | + * @param parent the component to be laid out | |
| 74 | + * @see #preferredLayoutSize | |
| 75 | + */ | |
| 76 | + Dimension minimumLayoutSize(Container parent); | |
| 77 | + | |
| 78 | + /** | |
| 79 | + * Lays out the specified container. | |
| 80 | + * @param parent the container to be laid out | |
| 81 | + */ | |
| 82 | + void layoutContainer(Container parent); | |
| 83 | +} | |