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annotate dwt/dnd/RTFTransfer.d @ 7:e831403a80a9

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Add 'cast' to casts
author Frank Benoit <benoit@tionex.de>
date Wed, 27 Aug 2008 14:30:35 +0200
parents 1a8b3cb347e0
children e76aa0b07480
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1 /*******************************************************************************
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2 * Copyright (c) 2000, 2005 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 module dwt.dnd;
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12
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13 import dwt.internal.carbon.OS;
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14 import dwt.internal.carbon.CFRange;
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15
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16 /**
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17 * The class <code>RTFTransfer</code> provides a platform specific mechanism
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18 * for converting text in RTF format represented as a java <code>String</code>
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19 * to a platform specific representation of the data and vice versa. See
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20 * <code>Transfer</code> for additional information.
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21 *
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22 * <p>An example of a java <code>String</code> containing RTF text is shown
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23 * below:</p>
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24 *
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25 * <code><pre>
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26 * String rtfData = "{\\rtf1{\\colortbl;\\red255\\green0\\blue0;}\\uc1\\b\\i Hello World}";
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27 * </code></pre>
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28 */
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29 public class RTFTransfer : ByteArrayTransfer {
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30
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31 static RTFTransfer _instance = new RTFTransfer();
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32 static final String RTF = "RTF "; //$NON-NLS-1$
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33 static final int RTFID = registerType(RTF);
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34
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35 this() {}
0
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36
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37 /**
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38 * Returns the singleton instance of the RTFTransfer class.
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39 *
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40 * @return the singleton instance of the RTFTransfer class
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41 */
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42 public static RTFTransfer getInstance () {
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43 return _instance;
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44 }
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45
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46 /**
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47 * This implementation of <code>javaToNative</code> converts RTF-formatted text
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48 * represented by a java <code>String</code> to a platform specific representation.
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49 * For additional information see <code>Transfer#javaToNative</code>.
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50 *
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51 * @param object a java <code>String</code> containing RTF text
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52 * @param transferData an empty <code>TransferData</code> object; this
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53 * object will be filled in on return with the platform specific format of the data
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54 */
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55 public void javaToNative (Object object, TransferData transferData){
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56 if (!checkRTF(object) || !isSupportedType(transferData)) {
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57 DND.error(DND.ERROR_INVALID_DATA);
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58 }
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59 transferData.result = -1;
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60 String String = cast(String)object;
0
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61 int count = String.length();
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62 char[] chars = new char[count];
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63 String.getChars(0, count, chars, 0);
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64 int cfString = OS.CFStringCreateWithCharacters(OS.kCFAllocatorDefault, chars, count);
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65 if (cfString is 0) return;
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66 try {
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67 CFRange range = new CFRange();
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68 range.length = chars.length;
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69 int encoding = OS.CFStringGetSystemEncoding();
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70 int[] size = new int[1];
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71 int numChars = OS.CFStringGetBytes(cfString, range, encoding, cast(byte)'?', true, null, 0, size);
0
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72 if (numChars is 0 || size[0] is 0) return;
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73 byte[] buffer = new byte[size[0]];
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74 numChars = OS.CFStringGetBytes(cfString, range, encoding, cast(byte)'?', true, buffer, size [0], size);
0
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75 if (numChars is 0) return;
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76 transferData.data = new byte[1][];
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77 transferData.data[0] = buffer;
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78 transferData.result = 0;
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79 } finally {
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80 OS.CFRelease(cfString);
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81 }
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82 }
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83
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84 /**
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85 * This implementation of <code>nativeToJava</code> converts a platform specific
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86 * representation of RTF text to a java <code>String</code>.
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87 * For additional information see <code>Transfer#nativeToJava</code>.
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88 *
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89 * @param transferData the platform specific representation of the data to be
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90 * been converted
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91 * @return a java <code>String</code> containing RTF text if the
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92 * conversion was successful; otherwise null
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93 */
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94 public Object nativeToJava(TransferData transferData){
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95 if (!isSupportedType(transferData) || transferData.data is null) return null;
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96 if (transferData.data.length is 0 || transferData.data[0].length is 0) return null;
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97 byte[] buffer = transferData.data[0];
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98 int encoding = OS.CFStringGetSystemEncoding();
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99 int cfString = OS.CFStringCreateWithBytes(OS.kCFAllocatorDefault, buffer, buffer.length, encoding, true);
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100 if (cfString is 0) return null;
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101 try {
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102 int length = OS.CFStringGetLength(cfString);
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103 if (length is 0) return null;
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104 char[] chars = new char[length];
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105 CFRange range = new CFRange();
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106 range.length = length;
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107 OS.CFStringGetCharacters(cfString, range, chars);
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108 return new String(chars);
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109 } finally {
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110 OS.CFRelease(cfString);
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111 }
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112 }
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113
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114 protected int[] getTypeIds() {
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115 return new int[] {RTFID};
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116 }
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117
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118 protected String[] getTypeNames() {
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119 return new String[] {RTF};
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120 }
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121
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122 bool checkRTF(Object object) {
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123 return (object !is null && object instanceof String && (cast(String)object).length() > 0);
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124 }
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125
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diff changeset
126 protected bool validate(Object object) {
380af2bdd8e5 Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
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127 return checkRTF(object);
380af2bdd8e5 Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
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128 }
380af2bdd8e5 Upload of whole dwt tree
Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
parents:
diff changeset
129 }