1 files changed, 115 insertions, 0 deletions
diff --git a/bundles/org.eclipse.swt/Eclipse SWT Drag and Drop/wpf/org/eclipse/swt/dnd/URLTransfer.java b/bundles/org.eclipse.swt/Eclipse SWT Drag and Drop/wpf/org/eclipse/swt/dnd/URLTransfer.java
new file mode 100644
index 0000000000..c509da3664
--- /dev/null
+++ b/bundles/org.eclipse.swt/Eclipse SWT Drag and Drop/wpf/org/eclipse/swt/dnd/URLTransfer.java
@@ -0,0 +1,115 @@
+/*******************************************************************************
+ * Copyright (c) 2007, 2009 IBM Corporation and others.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *     IBM Corporation - initial API and implementation
+ *******************************************************************************/
+package org.eclipse.swt.dnd;
+
+import org.eclipse.swt.internal.wpf.OS;
+
+/**
+ * The class <code>URLTransfer</code> provides a platform specific mechanism 
+ * for converting text in URL format represented as a java <code>String</code> 
+ * to a platform specific representation of the data and vice versa. The string
+ * must contain a fully specified url.
+ * 
+ * <p>An example of a java <code>String</code> containing a URL is shown below:</p>
+ * 
+ * <code><pre>
+ *     String url = "http://www.eclipse.org";
+ * </code></pre>
+ *
+ * @see Transfer
+ * @since 3.4
+ */
+public class URLTransfer extends ByteArrayTransfer {
+
+	static URLTransfer _instance = new URLTransfer();
+	static final String URL = "UniformResourceLocator"; //$NON-NLS-1$
+	static final int URL_ID = registerType(URL);
+
+private URLTransfer() {}
+
+/**
+ * Returns the singleton instance of the URLTransfer class.
+ *
+ * @return the singleton instance of the URLTransfer class
+ */
+public static URLTransfer getInstance () {
+	return _instance;
+}
+
+/**
+ * This implementation of <code>javaToNative</code> converts a URL
+ * represented by a java <code>String</code> to a platform specific representation.
+ * 
+ * @param object a java <code>String</code> containing a URL
+ * @param transferData an empty <code>TransferData</code> object that will
+ *  	be filled in on return with the platform specific format of the data
+ * 
+ * @see Transfer#nativeToJava
+ */
+public void javaToNative (Object object, TransferData transferData){
+	if (!checkURL(object) || !isSupportedType(transferData)) {
+		DND.error(DND.ERROR_INVALID_DATA);
+	}
+	String string = (String)object + '\0';
+	byte[] buffer = string.getBytes();
+	if (buffer.length == 0) return;
+	int typeid = OS.Byte_typeid();
+	int pBytes = OS.Array_CreateInstance(typeid, buffer.length);
+	OS.GCHandle_Free(typeid);
+	if (pBytes == 0) return;
+	OS.memcpy(pBytes, buffer, buffer.length);
+	int pStream = OS.gcnew_MemoryStream();
+	OS.MemoryStream_Write(pStream, pBytes, 0, buffer.length);
+	OS.GCHandle_Free(pBytes);
+	transferData.pValue = pStream;
+}
+
+/**
+ * This implementation of <code>nativeToJava</code> converts a platform 
+ * specific representation of a URL to a java <code>String</code>.
+ * 
+ * @param transferData the platform specific representation of the data to be converted
+ * @return a java <code>String</code> containing a URL if the conversion was successful;
+ * 		otherwise null
+ * 
+ * @see Transfer#javaToNative
+ */
+public Object nativeToJava(TransferData transferData){
+	if (!isSupportedType(transferData) || transferData.pValue == 0) return null;
+
+	int byteArray = 	OS.MemoryStream_ToArray(transferData.pValue);
+	int bLength = OS.Array_GetLength(byteArray, 0);
+	byte[] buffer = new byte[bLength];
+	if (bLength == 0) return "";
+	OS.memcpy(buffer, byteArray, bLength);
+	OS.GCHandle_Free(byteArray);
+
+	String string = new String(buffer);
+	int end = string.indexOf('\0');
+	return (end == -1) ? string : string.substring(0, end);
+}
+
+protected int[] getTypeIds(){
+	return new int[] {URL_ID};
+}
+
+protected String[] getTypeNames(){
+	return new String[] {URL}; 
+}
+
+boolean checkURL(Object object) {
+	return object != null && (object instanceof String) && ((String)object).length() > 0;
+}
+
+protected boolean validate(Object object) {
+	return checkURL(object);
+}
+}