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annotate dwt/dnd/RTFTransfer.d @ 107:6b8fcfda8b57

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Ported dwt.dnd.RTFTransfer
author Jacob Carlborg <doob@me.com>
date Wed, 31 Dec 2008 14:48:00 +0100
parents d8635bb48c7c
children a2d82e6fd054
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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 *
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11 * Port to the D programming language:
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12 * Jacob Carlborg <doob@me.com>
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13 *******************************************************************************/
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14 module dwt.dnd.RTFTransfer;
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16 import dwt.dwthelper.utils;
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18 import dwt.internal.cocoa.NSString;
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19 import dwt.internal.cocoa.OS;
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21 import dwt.dnd.ByteArrayTransfer;
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22 import dwt.dnd.DND;
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23 import dwt.dnd.TransferData;
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25 /**
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26 * The class <code>RTFTransfer</code> provides a platform specific mechanism
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27 * for converting text in RTF format represented as a java <code>String</code>
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28 * to a platform specific representation of the data and vice versa.
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29 *
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30 * <p>An example of a java <code>String</code> containing RTF text is shown
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31 * below:</p>
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32 *
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33 * <code><pre>
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34 * String rtfData = "{\\rtf1{\\colortbl;\\red255\\green0\\blue0;}\\uc1\\b\\i Hello World}";
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35 * </code></pre>
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36 *
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37 * @see Transfer
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38 */
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39 public class RTFTransfer : ByteArrayTransfer {
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41 static RTFTransfer _instance;
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42 static const String RTF;
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43 static const int RTFID;
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45 static this ()
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46 {
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47 _instance = new RTFTransfer();
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48 RTF = OS.NSRTFPboardType.getString();
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49 RTFID = registerType(RTF);
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50 }
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52 this() {}
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54 /**
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55 * Returns the singleton instance of the RTFTransfer class.
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56 *
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57 * @return the singleton instance of the RTFTransfer class
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58 */
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59 public static RTFTransfer getInstance () {
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60 return _instance;
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61 }
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63 /**
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64 * This implementation of <code>javaToNative</code> converts RTF-formatted text
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65 * represented by a java <code>String</code> to a platform specific representation.
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66 *
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67 * @param object a java <code>String</code> containing RTF text
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68 * @param transferData an empty <code>TransferData</code> object that will
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69 * be filled in on return with the platform specific format of the data
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70 *
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71 * @see Transfer#nativeToJava
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72 */
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73 public void javaToNative (Object object, TransferData transferData){
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74 if (!checkRTF(object) || !isSupportedType(transferData)) {
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75 DND.error(DND.ERROR_INVALID_DATA);
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76 }
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77 transferData.data = NSString.stringWith((cast(ArrayWrapperString) object).array);
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78 }
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79
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80 /**
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81 * This implementation of <code>nativeToJava</code> converts a platform specific
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82 * representation of RTF text to a java <code>String</code>.
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83 *
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84 * @param transferData the platform specific representation of the data to be converted
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85 * @return a java <code>String</code> containing RTF text if the conversion was successful;
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86 * otherwise null
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87 *
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88 * @see Transfer#javaToNative
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89 */
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90 public Object nativeToJava(TransferData transferData){
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91 if (!isSupportedType(transferData) || transferData.data is null) return null;
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92 NSString string = cast(NSString) transferData.data;
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93 return string.getString();
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94 }
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96 protected int[] getTypeIds() {
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97 return [RTFID];
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98 }
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99
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100 protected String[] getTypeNames() {
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101 return [RTF];
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102 }
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103
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104 bool checkRTF(Object object) {
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105 return (object !is null && cast(ArrayWrapperString) object && (cast(ArrayWrapperString) object).array.length() > 0);
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106 }
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108 protected bool validate(Object object) {
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109 return checkRTF(object);
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110 }
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111 }