1 files changed, 116 insertions, 0 deletions
diff --git a/bundles/org.eclipse.swt/Eclipse SWT Drag and Drop/motif/org/eclipse/swt/dnd/URLTransfer.java b/bundles/org.eclipse.swt/Eclipse SWT Drag and Drop/motif/org/eclipse/swt/dnd/URLTransfer.java
new file mode 100644
index 0000000000..9e266354fb
--- /dev/null
+++ b/bundles/org.eclipse.swt/Eclipse SWT Drag and Drop/motif/org/eclipse/swt/dnd/URLTransfer.java
@@ -0,0 +1,116 @@
+/*******************************************************************************
+ * 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.motif.*;
+ 
+/**
+ * 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 TEXT_UNICODE = "text/unicode"; //$NON-NLS-1$
+	private static final String TEXT_XMOZURL = "text/x-moz-url"; //$NON-NLS-1$
+	static final int TEXT_UNICODE_ID = registerType(TEXT_UNICODE);
+	private static final int TEXT_XMOZURL_ID = registerType(TEXT_XMOZURL);	
+
+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){
+	transferData.result = 0;
+	if (!checkURL(object) || !isSupportedType(transferData)) {
+		DND.error(DND.ERROR_INVALID_DATA);
+	}
+	String string = (String)object;
+	int charCount = string.length();
+	char [] chars = new char[charCount +1];
+	string.getChars(0, charCount , chars, 0);
+	int byteCount = chars.length*2;
+	int pValue = OS.XtMalloc(byteCount);
+	if (pValue == 0) return;
+	OS.memmove(pValue, chars, byteCount);
+	transferData.length = byteCount;
+	transferData.format = 8;
+	transferData.pValue = pValue;
+	transferData.result = 1;
+}
+
+/**
+ * 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;
+	/* Ensure byteCount is a multiple of 2 bytes */
+	int size = (transferData.format * transferData.length / 8) / 2 * 2;
+	if (size <= 0) return null;			
+	char[] chars = new char [size/2];
+	OS.memmove (chars, transferData.pValue, size);
+	String string = new String (chars);
+	int end = string.indexOf('\0');
+	return (end == -1) ? string : string.substring(0, end);
+}
+
+protected int[] getTypeIds(){
+	return new int[] {TEXT_XMOZURL_ID, TEXT_UNICODE_ID};
+}
+
+protected String[] getTypeNames(){
+	return new String[] {TEXT_XMOZURL, TEXT_UNICODE};
+}
+
+boolean checkURL(Object object) {
+	return object != null && (object instanceof String) && ((String)object).length() > 0;
+}
+
+protected boolean validate(Object object) {
+	return checkURL(object);
+}
+}