android: add graphic selection

Change-Id: I9bf9193a2130316caca83030c4fb5dd588c5c0e0

android/experimental/LOAndroid3/src/java/org/libreoffice/InvalidationHandler.java

@@ -66,6 +66,9 @@ public class InvalidationHandler implements Document.MessageCallback {
             case Document.CALLBACK_CURSOR_VISIBLE:
                 cursorVisibility(payload);
                 break;
+            case Document.CALLBACK_GRAPHIC_SELECTION:
+                graphicSelection(payload);
+                break;
             case Document.CALLBACK_HYPERLINK_CLICKED:
                 if (!payload.startsWith("http://") && !payload.startsWith("https://")) {
                     payload = "http://" + payload;
@@ -221,6 +224,19 @@ public class InvalidationHandler implements Document.MessageCallback {
         }
     }
 
+    /**
+     * Handles the graphic selection change message
+     * @param payload
+     */
+    private void graphicSelection(String payload) {
+        if (payload.isEmpty() || payload.equals("EMPTY")) {
+            mTextCursorLayer.changeSelections(Collections.EMPTY_LIST);
+        } else {
+            List<RectF> rects = convertPayloadToRectangles(payload);
+            mTextCursorLayer.changeSelections(rects);
+        }
+    }
+
     public synchronized void changeStateTo(OverlayState next) {
         changeState(mState, next);
     }