Mercurial > projects > dwt-linux
annotate dwt/dnd/RTFTransfer.d @ 259:c0d810de7093
Update SWT 3.4M7 to 3.4
| author | Frank Benoit <benoit@tionex.de> |
|---|---|
| date | Sun, 29 Jun 2008 14:33:38 +0200 |
| parents | 380bad9f6852 |
| children | 6383fb4cdfc3 |
| rev | line source |
|---|---|
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1 /******************************************************************************* |
| 259 | 2 * Copyright (c) 2000, 2008 IBM Corporation and others. |
| 92 | 3 * All rights reserved. This program and the accompanying materials |
| 4 * are made available under the terms of the Eclipse Public License v1.0 | |
| 5 * which accompanies this distribution, and is available at | |
| 6 * http://www.eclipse.org/legal/epl-v10.html | |
| 7 * | |
| 8 * Contributors: | |
| 9 * IBM Corporation - initial API and implementation | |
| 108 | 10 * Port to the D programming language: |
| 11 * Frank Benoit <benoit@tionex.de> | |
| 92 | 12 *******************************************************************************/ |
| 13 module dwt.dnd.RTFTransfer; | |
| 14 | |
| 15 import dwt.internal.Converter; | |
| 16 import dwt.internal.gtk.OS; | |
| 17 import dwt.dnd.ByteArrayTransfer; | |
| 18 import dwt.dnd.TransferData; | |
| 19 import dwt.dnd.DND; | |
| 20 | |
| 21 import dwt.dwthelper.utils; | |
| 22 static import tango.text.Util; | |
| 23 | |
| 24 /** | |
| 25 * The class <code>RTFTransfer</code> provides a platform specific mechanism | |
| 26 * for converting text in RTF format represented as a java <code>String</code> | |
| 259 | 27 * to a platform specific representation of the data and vice versa. |
| 92 | 28 * |
| 29 * <p>An example of a java <code>String</code> containing RTF text is shown | |
| 30 * below:</p> | |
| 31 * | |
| 32 * <code><pre> | |
| 33 * String rtfData = "{\\rtf1{\\colortbl;\\red255\\green0\\blue0;}\\uc1\\b\\i Hello World}"; | |
| 34 * </code></pre> | |
| 259 | 35 * |
| 36 * @see Transfer | |
| 92 | 37 */ |
| 38 public class RTFTransfer : ByteArrayTransfer { | |
| 39 | |
| 40 private static RTFTransfer _instance; | |
| 238 | 41 private static const String TEXT_RTF = "text/rtf"; //$NON-NLS-1$ |
| 92 | 42 private static const int TEXT_RTF_ID; |
| 238 | 43 private static const String TEXT_RTF2 = "TEXT/RTF"; //$NON-NLS-1$ |
| 92 | 44 private static const int TEXT_RTF2_ID; |
| 238 | 45 private static const String APPLICATION_RTF = "application/rtf"; //$NON-NLS-1$ |
| 92 | 46 private static const int APPLICATION_RTF_ID; |
| 47 | |
| 48 static this(){ | |
| 49 TEXT_RTF_ID = registerType(TEXT_RTF); | |
| 50 TEXT_RTF2_ID = registerType(TEXT_RTF2); | |
| 51 APPLICATION_RTF_ID = registerType(APPLICATION_RTF); | |
| 52 _instance = new RTFTransfer(); | |
| 53 } | |
| 54 | |
| 55 private this() {} | |
| 56 | |
| 57 /** | |
| 58 * Returns the singleton instance of the RTFTransfer class. | |
| 59 * | |
| 60 * @return the singleton instance of the RTFTransfer class | |
| 61 */ | |
| 62 public static RTFTransfer getInstance () { | |
| 63 return _instance; | |
| 64 } | |
| 65 | |
| 66 /** | |
| 67 * This implementation of <code>javaToNative</code> converts RTF-formatted text | |
| 68 * represented by a java <code>String</code> to a platform specific representation. | |
| 69 * | |
| 70 * @param object a java <code>String</code> containing RTF text | |
| 259 | 71 * @param transferData an empty <code>TransferData</code> object that will |
| 72 * be filled in on return with the platform specific format of the data | |
| 73 * | |
| 74 * @see Transfer#nativeToJava | |
| 92 | 75 */ |
|
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76 public override void javaToNative (Object object, TransferData transferData){ |
| 92 | 77 transferData.result = 0; |
| 78 if (!checkRTF(object) || !isSupportedType(transferData)) { | |
| 79 DND.error(DND.ERROR_INVALID_DATA); | |
| 80 } | |
| 238 | 81 String string = (cast(ArrayWrapperString)object).array; |
| 92 | 82 char* pValue = cast(char*)OS.g_malloc(string.length + 1); |
| 83 if (pValue is null) return; | |
| 84 pValue[ 0 .. string.length ] = string; | |
| 85 pValue[ string.length ] = '\0'; | |
| 86 transferData.length = string.length; | |
| 87 transferData.format = 8; | |
| 88 transferData.pValue = pValue; | |
| 89 transferData.result = 1; | |
| 90 } | |
| 91 | |
| 92 /** | |
| 93 * This implementation of <code>nativeToJava</code> converts a platform specific | |
| 94 * representation of RTF text to a java <code>String</code>. | |
| 95 * | |
| 259 | 96 * @param transferData the platform specific representation of the data to be converted |
| 97 * @return a java <code>String</code> containing RTF text if the conversion was successful; | |
| 98 * otherwise null | |
| 99 * | |
| 100 * @see Transfer#javaToNative | |
| 92 | 101 */ |
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102 public override Object nativeToJava(TransferData transferData){ |
| 92 | 103 if ( !isSupportedType(transferData) || transferData.pValue is null ) return null; |
| 104 int size = transferData.format * transferData.length / 8; | |
| 105 if (size is 0) return null; | |
| 106 byte[] buffer = new byte[size]; | |
| 107 char [] chars = transferData.pValue[ 0 .. size]; | |
| 108 return new ArrayWrapperString( chars[ 0 .. tango.text.Util.locate( chars, '\0' ) ] ); | |
| 109 } | |
| 110 | |
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overloads second walkthrough
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parents:
108
diff
changeset
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111 protected override int[] getTypeIds() { |
| 92 | 112 return [TEXT_RTF_ID, TEXT_RTF2_ID, APPLICATION_RTF_ID]; |
| 113 } | |
| 114 | |
| 238 | 115 protected override String[] getTypeNames() { |
| 92 | 116 return [TEXT_RTF, TEXT_RTF2, APPLICATION_RTF]; |
| 117 } | |
| 118 | |
| 119 bool checkRTF(Object object) { | |
| 120 if( object is null ) return false; | |
| 121 ArrayWrapperString astr = cast(ArrayWrapperString)object; | |
| 122 if( astr is null ) return false; | |
| 123 return astr.array.length > 0; | |
| 124 } | |
| 125 | |
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152
17f8449522fd
overloads second walkthrough
Frank Benoit <benoit@tionex.de>
parents:
108
diff
changeset
|
126 protected override bool validate(Object object) { |
| 92 | 127 return checkRTF(object); |
| 128 } | |
| 129 } |