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| 1 | /* | ||
| 2 | * Copyright (c) 1997, 2002, 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 | |||
| 26 | package javax.swing; | ||
| 27 | |||
| 28 | import javax.swing.event.*; | ||
| 29 | |||
| 30 | /** | ||
| 31 | * A model that supports at most one indexed selection. | ||
| 32 | * | ||
| 33 | * @author Dave Moore | ||
| 34 | */ | ||
| 35 | public interface SingleSelectionModel { | ||
| 36 | /** | ||
| 37 | * Returns the model's selection. | ||
| 38 | * | ||
| 39 | * @return the model's selection, or -1 if there is no selection | ||
| 40 | * @see #setSelectedIndex | ||
| 41 | */ | ||
| 42 | public int getSelectedIndex(); | ||
| 43 | |||
| 44 | /** | ||
| 45 | * Sets the model's selected index to <I>index</I>. | ||
| 46 | * | ||
| 47 | * Notifies any listeners if the model changes | ||
| 48 | * | ||
| 49 | * @param index an int specifying the model selection | ||
| 50 | * @see #getSelectedIndex | ||
| 51 | * @see #addChangeListener | ||
| 52 | */ | ||
| 53 | public void setSelectedIndex(int index); | ||
| 54 | |||
| 55 | /** | ||
| 56 | * Clears the selection (to -1). | ||
| 57 | */ | ||
| 58 | public void clearSelection(); | ||
| 59 | |||
| 60 | /** | ||
| 61 | * Returns true if the selection model currently has a selected value. | ||
| 62 | * @return true if a value is currently selected | ||
| 63 | */ | ||
| 64 | public boolean isSelected(); | ||
| 65 | |||
| 66 | /** | ||
| 67 | * Adds <I>listener</I> as a listener to changes in the model. | ||
| 68 | * @param listener the ChangeListener to add | ||
| 69 | */ | ||
| 70 | void addChangeListener(ChangeListener listener); | ||
| 71 | |||
| 72 | /** | ||
| 73 | * Removes <I>listener</I> as a listener to changes in the model. | ||
| 74 | * @param listener the ChangeListener to remove | ||
| 75 | */ | ||
| 76 | void removeChangeListener(ChangeListener listener); | ||
| 77 | } | ||