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1 /*******************************************************************************
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2 * Copyright (c) 2000, 2008 IBM Corporation and others.
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3 * All rights reserved. This program and the accompanying materials
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4 * are made available under the terms of the Eclipse Public License v1.0
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5 * which accompanies this distribution, and is available at
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6 * http://www.eclipse.org/legal/epl-v10.html
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7 *
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8 * Contributors:
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9 * IBM Corporation - initial API and implementation
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10 * Port to the D programming language:
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11 * Frank Benoit <benoit@tionex.de>
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12 *******************************************************************************/
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13 module org.eclipse.swt.accessibility.AccessibleTextAdapter;
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14
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15 import java.lang.all;
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16
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17 import org.eclipse.swt.accessibility.AccessibleTextEvent;
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18 import org.eclipse.swt.accessibility.AccessibleTextListener;
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19
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20 /**
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21 * This adapter class provides default implementations for the
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22 * methods described by the <code>AccessibleTextListener</code> interface.
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23 * <p>
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24 * Classes that wish to deal with <code>AccessibleTextEvent</code>s can
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25 * extend this class and override only the methods that they are
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26 * interested in.
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27 * </p><p>
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28 * Note: Accessibility clients use child identifiers to specify
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29 * whether they want information about a control or one of its children.
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30 * Child identifiers are increasing integers beginning with 0.
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31 * The identifier CHILDID_SELF represents the control itself.
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32 * When returning a child identifier to a client, you may use CHILDID_NONE
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33 * to indicate that no child or control has the required information.
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34 * </p><p>
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35 * Note: This adapter is typically used by implementors of
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36 * a custom control to provide very detailed information about
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37 * the control instance to accessibility clients.
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38 * </p>
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39 *
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40 * @see AccessibleTextListener
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41 * @see AccessibleTextEvent
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42 * @see <a href="http://www.eclipse.org/swt/">Sample code and further information</a>
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43 *
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44 * @since 3.0
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45 */
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46 public abstract class AccessibleTextAdapter : AccessibleTextListener {
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47
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48 /**
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49 * Sent when an accessibility client requests the current character offset
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50 * of the text caret.
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51 * The default behavior is to do nothing.
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52 * <p>
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53 * Return the caret offset in the <code>offset</code>
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54 * field of the event object.
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55 * </p>
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56 *
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57 * @param e an event object containing the following fields:<ul>
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58 * <li>childID [IN] - an identifier specifying a child of the control</li>
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59 * <li>offset [OUT] - the current offset of the text caret</li>
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60 * </ul>
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61 */
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62 public void getCaretOffset (AccessibleTextEvent e) {
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63 }
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64
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65 /**
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66 * Sent when an accessibility client requests the range of the current
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67 * text selection.
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68 * The default behavior is to do nothing.
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69 * <p>
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70 * Return the selection start offset and non-negative length in the
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71 * <code>offset</code> and <code>length</code> fields of the event object.
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72 * </p>
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73 *
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74 * @param e an event object containing the following fields:<ul>
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75 * <li>childID [IN] - an identifier specifying a child of the control</li>
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76 * <li>offset [OUT] - the offset of the current text selection</li>
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77 * <li>length [OUT] - the length of the current text selection</li>
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78 * </ul>
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79 */
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80 public void getSelectionRange (AccessibleTextEvent e) {
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81 }
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82 }
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