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| 1 | +/* | |
| 2 | + * Copyright (c) 1995, 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 sun.awt; | |
| 27 | + | |
| 28 | +import java.awt.*; | |
| 29 | + | |
| 30 | +/** | |
| 31 | + * FocusingTextField: a subclass of java.awt.TextField that handles moving the | |
| 32 | + * input focus from field to field, as when the user hits 'return.' | |
| 33 | + * | |
| 34 | + * @author Herb Jellinek | |
| 35 | + */ | |
| 36 | + | |
| 37 | +public class FocusingTextField extends TextField { | |
| 38 | + | |
| 39 | + /** The field to move to on 'return' - can be null. */ | |
| 40 | + TextField next; | |
| 41 | + | |
| 42 | + /** If true, select the contents of the field when it gets the focus. */ | |
| 43 | + boolean willSelect; | |
| 44 | + | |
| 45 | + /** | |
| 46 | + * Create a FocusingTextField. | |
| 47 | + * @param cols number of columns of text. | |
| 48 | + */ | |
| 49 | + public FocusingTextField(int cols) { | |
| 50 | + super("", cols); | |
| 51 | + } | |
| 52 | + | |
| 53 | + /** | |
| 54 | + * Create a FocusingTextField. | |
| 55 | + * @param cols number of columns of text. | |
| 56 | + * @param willSelect if true, will select all contents of field when | |
| 57 | + * focus is gained. | |
| 58 | + */ | |
| 59 | + public FocusingTextField(int cols, boolean willSelect) { | |
| 60 | + this(cols); | |
| 61 | + this.willSelect = willSelect; | |
| 62 | + } | |
| 63 | + | |
| 64 | + public void setWillSelect(boolean will) { | |
| 65 | + willSelect = will; | |
| 66 | + } | |
| 67 | + | |
| 68 | + public boolean getWillSelect() { | |
| 69 | + return willSelect; | |
| 70 | + } | |
| 71 | + | |
| 72 | + /** | |
| 73 | + * Call this to set the next field to receive the input focus. | |
| 74 | + * @param next the next TextField in order - can be null. | |
| 75 | + */ | |
| 76 | + public void setNextField(TextField next) { | |
| 77 | + this.next = next; | |
| 78 | + } | |
| 79 | + | |
| 80 | + /** | |
| 81 | + * We got the focus. If willSelect is true, select everything. | |
| 82 | + */ | |
| 83 | + public boolean gotFocus(Event e, Object arg) { | |
| 84 | + if (willSelect) { | |
| 85 | + select(0, getText().length()); | |
| 86 | + } | |
| 87 | + return true; | |
| 88 | + } | |
| 89 | + | |
| 90 | + /** | |
| 91 | + * We lost the focus. If willSelect is true, deselect everything. | |
| 92 | + */ | |
| 93 | + public boolean lostFocus(Event e, Object arg) { | |
| 94 | + if (willSelect) { | |
| 95 | + select(0, 0); | |
| 96 | + } | |
| 97 | + return true; | |
| 98 | + } | |
| 99 | + | |
| 100 | + /** | |
| 101 | + * Pass the focus to the next guy, if any. | |
| 102 | + */ | |
| 103 | + public void nextFocus() { | |
| 104 | + if (next != null) { | |
| 105 | + next.requestFocus(); | |
| 106 | + } | |
| 107 | + super.nextFocus(); | |
| 108 | + } | |
| 109 | +} | |