--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dwt/dnd/URLTransfer.d	Mon May 12 19:13:01 2008 +0200
@@ -0,0 +1,119 @@
+/*******************************************************************************
+ * Copyright (c) 2007 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
+ *******************************************************************************/
+module dwt.dnd.URLTransfer;
+
+import dwt.internal.gtk.OS;
+
+import dwt.dnd.ByteArrayTransfer;
+import dwt.dnd.TransferData;
+import dwt.dnd.DND;
+
+import dwt.dwthelper.utils;
+
+/**
+ * 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.  See
+ * <code>Transfer</code> for additional information. The string
+ * must be a fully specified url.
+ *
+ * <p>An example of a java <code>String[]</code> containing a URL is shown
+ * below:</p>
+ *
+ * <code><pre>
+ *     String urlData = "http://www.eclipse.org";
+ * </code></pre>
+ */
+public class URLTransfer : ByteArrayTransfer {
+
+    static URLTransfer _instance;
+    private static const String TEXT_UNICODE = "text/unicode"; //$NON-NLS-1$
+    private static const String TEXT_XMOZURL = "text/x-moz-url"; //$NON-NLS-1$
+    private static int TEXT_UNICODE_ID;
+    private static int TEXT_XMOZURL_ID;
+
+static this(){
+    TEXT_UNICODE_ID = registerType(TEXT_UNICODE);
+    TEXT_XMOZURL_ID = registerType(TEXT_XMOZURL);
+    _instance = new URLTransfer();
+}
+
+private this() {}
+
+/**
+ * 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.
+ * For additional information see <code>Transfer#javaToNative</code>.
+ *
+ * @param object a java <code>String</code> containing a URL
+ * @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){
+    transferData.result = 0;
+    if (!checkURL(object) || !isSupportedType(transferData)) {
+        DND.error(DND.ERROR_INVALID_DATA);
+    }
+    String string = (cast(ArrayWrapperString)object).array;
+    char* pValue = cast(char*)OS.g_malloc(string.length+1);
+    if (pValue is null) return;
+    pValue[ 0 .. string.length ] = string[];
+    pValue[ string.length ] = '\0';
+    transferData.length = string.length;
+    transferData.format = 8;
+    transferData.pValue = pValue;
+    transferData.result = 1;
+}
+
+/**
+ * This implementation of <code>nativeToJava</code> converts a platform specific
+ * representation of a URL <code>String</code>.
+ * For additional information see <code>Transfer#nativeToJava</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
+ */
+public Object nativeToJava(TransferData transferData){
+    if (!isSupportedType(transferData) ||  transferData.pValue is null) return null;
+    int size = (transferData.format * transferData.length / 8);
+    if (size <= 0) return null;
+    String string = tango.stdc.stringz.fromStringz(cast(char*)transferData.pValue).dup;
+    int end = string.indexOf('\0');
+    return new ArrayWrapperString((end is -1) ? string : string.substring(0, end));
+}
+
+protected int[] getTypeIds(){
+    return [TEXT_XMOZURL_ID, TEXT_UNICODE_ID];
+}
+
+protected String[] getTypeNames(){
+    return [TEXT_XMOZURL, TEXT_UNICODE];
+}
+
+bool checkURL(Object object) {
+    return object !is null && (null !is cast(ArrayWrapperString)object) && (cast(ArrayWrapperString)object).array.length > 0;
+}
+
+protected bool validate(Object object) {
+    return checkURL(object);
+}
+}