1 files changed, 57 insertions, 0 deletions
diff --git a/bundles/org.eclipse.swt/Eclipse SWT Drag and Drop/gtk/org/eclipse/swt/dnd/Transfer.java b/bundles/org.eclipse.swt/Eclipse SWT Drag and Drop/gtk/org/eclipse/swt/dnd/Transfer.java
new file mode 100644
index 0000000000..9dcf84ff27
--- /dev/null
+++ b/bundles/org.eclipse.swt/Eclipse SWT Drag and Drop/gtk/org/eclipse/swt/dnd/Transfer.java
@@ -0,0 +1,57 @@
+package org.eclipse.swt.dnd;
+
+/*
+ * (c) Copyright IBM Corp. 2000, 2001.
+ * All Rights Reserved
+ */
+ 
+import org.eclipse.swt.internal.Converter;
+import org.eclipse.swt.internal.gtk.OS;
+import org.eclipse.swt.widgets.Display;
+
+/**
+ * The class <code>Transfer</code> provides a mechanism for converting a Java object to a 
+ * platform specific format that can be passed around in a Drag and Drop operation and vice versa.
+ *
+ * <p>You should only need to become familiar with this class if you are implementing
+ * a Transfer subclass and you are unable to subclass the ByteArrayTransfer class.</p>
+ */
+public abstract class Transfer {
+/**
+ * Returns a list of the data types that can be transferred using this Transfer agent.
+ *
+ * <p>Only the data type fields of the TransferData Object are filled in.</p>
+ *
+ * @return a list of the data types that can be transferred using this Transfer agent
+ */
+abstract public TransferData[] getSupportedTypes();
+/**
+ * Returns true if the transferData data type can be transferred using this Transfer agent.
+ *
+ * @param transferData a platform specific description of a data type; only the data type fields 
+ *                         of the TransferData Object need to be filled in
+ *
+ * @return true if the transferData data type can be transferred using this Transfer agent
+ */
+abstract public boolean isSupportedType(TransferData transferData);
+abstract protected String[] getTypeNames();
+abstract protected int[] getTypeIds();
+abstract protected void javaToNative (Object object, TransferData transferData);
+abstract protected Object nativeToJava(TransferData transferData);
+/**
+ * Registers a name for a data type and returns the associated unique identifier.
+ *
+ * <p>You may register the same type more than once, the same unique identifier will be returned if the
+ * type has been previously registered.</p>
+ *
+ * <p>Note: Do <b>not</b> call this method with pre-defined Clipboard Format types such as CF_TEXT 
+ * or CF_BITMAP because the pre-defined value will not be returned</p>
+ *
+ * @param formatName the name of a data type
+ *
+ * @return the unique identifier associated with htis data type
+ */
+public static int registerType(String formatName){
+	return 0;
+}
+}