tdf#131548 Android: jump to cell

Added LOK_CALLBACK_SC_FOLLOW_JUMP: fire this signal to jump to cell
cursor in android viewer. Payload format same as
LOK_CALLBACK_INVALIDATE_TILES.

Change-Id: Ic896baccf1327d6ccdf104811446e3454a42679e
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/116448
Tested-by: Jenkins
Reviewed-by: Michael Weghorn <m.weghorn@posteo.de>

2 files changed, 51 insertions, 4 deletions

diff --git a/android/Bootstrap/src/org/libreoffice/kit/Document.java b/android/Bootstrap/src/org/libreoffice/kit/Document.java
index 69f8f76c3eb4..ed7208da5924 100644
--- a/android/Bootstrap/src/org/libreoffice/kit/Document.java
+++ b/android/Bootstrap/src/org/libreoffice/kit/Document.java
@@ -92,6 +92,7 @@ public class Document {
     public static final int CALLBACK_COMMENT = 32;
     public static final int CALLBACK_INVALIDATE_HEADER = 33;
     public static final int CALLBACK_CELL_ADDRESS = 34;
+    public static final int CALLBACK_SC_FOLLOW_JUMP = 52;
 
     /**
      * Set text selection types
diff --git a/android/source/src/java/org/libreoffice/InvalidationHandler.java b/android/source/src/java/org/libreoffice/InvalidationHandler.java
index d74f150bfb44..0f3f1dd7b889 100644
--- a/android/source/src/java/org/libreoffice/InvalidationHandler.java
+++ b/android/source/src/java/org/libreoffice/InvalidationHandler.java
@@ -55,6 +55,7 @@ public class InvalidationHandler implements Document.MessageCallback, Office.Mes
                     && messageID != Document.CALLBACK_DOCUMENT_PASSWORD
                     && messageID != Document.CALLBACK_HYPERLINK_CLICKED
                     && messageID != Document.CALLBACK_SEARCH_RESULT_SELECTION
+                    && messageID != Document.CALLBACK_SC_FOLLOW_JUMP
                     && messageID != Document.CALLBACK_TEXT_SELECTION
                     && messageID != Document.CALLBACK_TEXT_SELECTION_START
                     && messageID != Document.CALLBACK_TEXT_SELECTION_END)
@@ -114,6 +115,9 @@ public class InvalidationHandler implements Document.MessageCallback, Office.Mes
             case Document.CALLBACK_CELL_CURSOR:
                 invalidateCellCursor(payload);
                 break;
+            case Document.CALLBACK_SC_FOLLOW_JUMP:
+                jumpToCell(payload);
+                break;
             case Document.CALLBACK_INVALIDATE_HEADER:
                 invalidateHeader();
                 break;
@@ -214,6 +218,14 @@ public class InvalidationHandler implements Document.MessageCallback, Office.Mes
         }
     }
 
+    private void jumpToCell(String payload) {
+        RectF cellCursorRect = convertPayloadCellToRectangle(payload);
+
+        if (cellCursorRect != null) {
+            moveViewportToMakeSelectionVisible(cellCursorRect);
+        }
+    }
+
     /**
      * Handles the search result selection message, which is a JSONObject
      *
@@ -368,6 +380,40 @@ public class InvalidationHandler implements Document.MessageCallback, Office.Mes
         if (coordinates.length != 4) {
             return null;
         }
+        return convertPayloadToRectangle(coordinates);
+    }
+
+    /**
+     * Parses the payload text with rectangle coordinates and converts to rectangle in pixel coordinates
+     *
+     * @param payload - invalidation message payload text
+     * @return rectangle in pixel coordinates
+     */
+    public RectF convertPayloadCellToRectangle(String payload) {
+        String payloadWithoutWhitespace = payload.replaceAll("\\s", ""); // remove all whitespace from the string
+
+        if (payloadWithoutWhitespace.isEmpty() || payloadWithoutWhitespace.equals("EMPTY")) {
+            return null;
+        }
+
+        String[] coordinates = payloadWithoutWhitespace.split(",");
+
+        if (coordinates.length != 6 ) {
+            return null;
+        }
+        return convertPayloadToRectangle(coordinates);
+    }
+
+    /**
+     * Converts rectangle coordinates to rectangle in pixel coordinates
+     *
+     * @param coordinates - the first four items defines the rectangle
+     * @return rectangle in pixel coordinates
+     */
+    public RectF convertPayloadToRectangle(String[] coordinates) {
+        if (coordinates.length < 4 ) {
+            return null;
+        }
 
         int x = Integer.decode(coordinates[0]);
         int y = Integer.decode(coordinates[1]);
@@ -377,10 +423,10 @@ public class InvalidationHandler implements Document.MessageCallback, Office.Mes
         float dpi = LOKitShell.getDpi(mContext);
 
         return new RectF(
-                LOKitTileProvider.twipToPixel(x, dpi),
-                LOKitTileProvider.twipToPixel(y, dpi),
-                LOKitTileProvider.twipToPixel(x + width, dpi),
-                LOKitTileProvider.twipToPixel(y + height, dpi)
+            LOKitTileProvider.twipToPixel(x, dpi),
+            LOKitTileProvider.twipToPixel(y, dpi),
+            LOKitTileProvider.twipToPixel(x + width, dpi),
+            LOKitTileProvider.twipToPixel(y + height, dpi)
         );
     }