android: Add callback types to Document

Change-Id: I93d117d42b6ccf48b58f9c8d64be0266ff36c6f3

android/Bootstrap/src/org/libreoffice/kit/Document.java

@@ -26,10 +26,19 @@ public class Document {
     public static final int DOCTYPE_DRAWING = 3;
     public static final int DOCTYPE_OTHER = 4;
 
+    /**
+     * Mouse event types
+     */
     public static final int MOUSE_BUTTON_DOWN = 0;
     public static final int MOUSE_BUTTON_UP = 1;
     public static final int MOUSE_MOVE = 2;
 
+    /**
+     * Callback message types
+     */
+    public static final int CALLBACK_INVALIDATE_TILES = 0;
+    public static final int CALLBACK_INVALIDATE_VISIBLE_CURSOR = 1;
+
     private final ByteBuffer handle;
     private MessageCallback messageCallback = null;