package org.eclipse.swt.dnd; | |
/* | |
* (c) Copyright IBM Corp. 2000, 2001. | |
* All Rights Reserved | |
*/ | |
import org.eclipse.swt.internal.Converter; | |
/** | |
* The <code>RTFTransfer</code> class is used to transfer text with the RTF format | |
* in a drag and drop operation. | |
*/ | |
public class RTFTransfer extends ByteArrayTransfer { | |
private static RTFTransfer _instance = new RTFTransfer(); | |
private static final String TYPENAME1 = "text/rtf"; | |
private static final int TYPEID1 = registerType(TYPENAME1); | |
private static final String TYPENAME2 = "TEXT/RTF"; | |
private static final int TYPEID2 = registerType(TYPENAME2); | |
private static final String TYPENAME3 = "application/rtf"; | |
private static final int TYPEID3 = registerType(TYPENAME3); | |
private RTFTransfer() { | |
} | |
/** | |
* Returns the singleton instance of the RTFTransfer class. | |
* | |
* @return the singleton instance of the RTFTransfer class | |
*/ | |
public static RTFTransfer getInstance () { | |
return _instance; | |
} | |
/** | |
* Converts a RTF-formatted Java String to a platform specific representation. | |
* <p> | |
* On a successful conversion, the transferData.result field will be set as follows: | |
* <ul> | |
* <li>Windows: OLE.S_OK | |
* <li>Motif: 0 | |
* </ul> | |
* If this transfer agent is unable to perform the conversion, | |
* the transferData.result field will be set to a failure value as follows: | |
* <ul> | |
* <li>Windows: OLE.DV_E_TYMED | |
* <li>Motif: 1 | |
* </ul></p> | |
* | |
* @param object a Java String containing the data to be transferred | |
* @param transferData an empty TransferData object; this object will be filled in on return | |
* with the platform specific format of the data | |
*/ | |
public void javaToNative (Object object, TransferData transferData){ | |
if (object == null || !(object instanceof String)) return; | |
byte [] buffer = Converter.wcsToMbcs (null, (String)object, true); | |
super.javaToNative(buffer, transferData); | |
} | |
/** | |
* Converts a platform specific representation of a string to a Java String. | |
* | |
* @param transferData the platform specific representation of the data that has been transferred | |
* @return a Java String containing the transferred data if the conversion was successful; | |
* otherwise null | |
*/ | |
public Object nativeToJava(TransferData transferData){ | |
// get byte array from super | |
byte[] buffer = (byte[])super.nativeToJava(transferData); | |
if (buffer == null) return null; | |
// convert byte array to a string | |
char [] unicode = Converter.mbcsToWcs (null, buffer); | |
String string = new String (unicode); | |
int end = string.indexOf('\0'); | |
return (end == -1) ? string : string.substring(0, end); | |
} | |
protected String[] getTypeNames(){ | |
return new String[]{TYPENAME1, TYPENAME2, TYPENAME3}; | |
} | |
protected int[] getTypeIds(){ | |
return new int[]{TYPEID1, TYPEID2, TYPEID3}; | |
} | |
} |