| 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>FileTransfer</code> provides a platform specific mechanism
|
| * for converting a list of files 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 FileTransfer extends ByteArrayTransfer {
|
|
|
| private static FileTransfer _instance = new FileTransfer();
|
| private static final String TYPENAME = "text/uri-list";
|
| private static final int TYPEID = registerType(TYPENAME);
|
|
|
| private FileTransfer() {}
|
| /**
|
| * Returns the singleton instance of the FileTransfer class.
|
| *
|
| * @return the singleton instance of the FileTransfer class
|
| */ |
| public static FileTransfer getInstance () {
|
| return _instance;
|
| }
|
| /**
|
| * This implementation of <code>javaToNative</code> converts a list of file names
|
| * represented by a java <code>String[]</code> to a platform specific representation.
|
| * Each <code>String</code> in the array contains the absolute path for a single
|
| * file or directory. For additional information see
|
| * <code>Transfer#javaToNative</code>.
|
| *
|
| * @param object a java <code>String[]</code> containing the file names to be
|
| * converted
|
| * @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;
|
| // build a byte array from data
|
| String[] files = (String[])object;
|
|
|
| // create a string separated by "new lines" to represent list of files
|
| String nativeFormat = "";
|
| for (int i = 0, length = files.length; i < length; i++){
|
| nativeFormat += "file:"+files[i]+"\r";
|
| }
|
| byte[] buffer = Converter.wcsToMbcs(null, nativeFormat, true);
|
| // pass byte array on to super to convert to native
|
| super.javaToNative(buffer, transferData);
|
| }
|
| /**
|
| * This implementation of <code>nativeToJava</code> converts a platform specific
|
| * representation of a list of file names to a java <code>String[]</code>.
|
| * Each String in the array contains the absolute path for a single file or directory.
|
| * 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 a list of file names if the
|
| * conversion was successful; otherwise null
|
| */ |
| public Object nativeToJava(TransferData transferData) {
|
|
|
| byte[] data = (byte[])super.nativeToJava(transferData);
|
| if (data == null) return null;
|
| char[] unicode = Converter.mbcsToWcs(null, data);
|
| String string = new String(unicode);
|
| // parse data and convert string to array of files
|
| int start = string.indexOf("file:");
|
| if (start == -1) return null;
|
| start += 5;
|
| String[] fileNames = new String[0];
|
| while (start < string.length()) {
|
| int end = string.indexOf("\r", start);
|
| if (end == -1) end = string.length() - 1;
|
| String fileName = string.substring(start, end);
|
|
|
| String[] newFileNames = new String[fileNames.length + 1];
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| System.arraycopy(fileNames, 0, newFileNames, 0, fileNames.length);
|
| newFileNames[fileNames.length] = fileName;
|
| fileNames = newFileNames;
|
|
|
| start = string.indexOf("file:", end);
|
| if (start == -1) break;
|
| start += 5;
|
| }
|
| return fileNames;
|
| }
|
| protected String[] getTypeNames(){
|
| return new String[]{TYPENAME};
|
| }
|
| protected int[] getTypeIds(){
|
| return new int[]{TYPEID};
|
| }
|
| }
|