| package org.eclipse.swt.dnd;
|
|
|
| /*
|
| * Copyright (c) 2000, 2002 IBM Corp. All rights reserved. |
| * This file is made available under the terms of the Common Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/cpl-v10.html
|
| */
|
|
|
| import org.eclipse.swt.internal.Converter;
|
| /**
|
| * The class <code>TextTransfer</code> provides a platform specific mechanism
|
| * for converting plain text represented as a java <code>String</code>
|
| * to a platform specific representation of the data and vice versa. See
|
| * <code>Transfer</code> for additional information.
|
| */ |
| public class TextTransfer extends ByteArrayTransfer {
|
|
|
| private static TextTransfer _instance = new TextTransfer();
|
| private static final String TYPENAME1 = "STRING";
|
| private static final int TYPEID1 = registerType(TYPENAME1);
|
| private static final String TYPENAME2 = "text/plain";
|
| private static final int TYPEID2 = registerType(TYPENAME2);
|
| private static final String TYPENAME3 = "text/text";
|
| private static final int TYPEID3 = registerType(TYPENAME3);
|
| private static final String TYPENAME4 = "TEXT";
|
| private static final int TYPEID4 = registerType(TYPENAME4);
|
|
|
| private TextTransfer() {
|
| }
|
| /**
|
| * Returns the singleton instance of the TextTransfer class.
|
| *
|
| * @return the singleton instance of the TextTransfer class
|
| */ |
| public static TextTransfer getInstance () {
|
| return _instance;
|
| }
|
| /**
|
| * This implementation of <code>javaToNative</code> converts plain text
|
| * represented by a java <code>String</code> to a platform specific representation.
|
| * For additional information see <code>Transfer#javaToNative</code>.
|
| *
|
| * @param object a java <code>String</code> containing text
|
| * @param transferData an empty <code>TransferData</code> 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);
|
| }
|
| /**
|
| * This implementation of <code>nativeToJava</code> converts a platform specific
|
| * representation of plain text to a java <code>String</code>.
|
| * For additional information see <code>Transfer#nativeToJava</code>.
|
| *
|
| * @param transferData the platform specific representation of the data to be
|
| * been converted
|
| * @return a java <code>String</code> containing text 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, TYPENAME4};
|
| }
|
| protected int[] getTypeIds(){
|
| return new int[]{TYPEID1, TYPEID2, TYPEID3, TYPEID4};
|
| }
|
| }
|
