tdf#150673 sw offapi: add change tracking of table column deletion

This is a minimal extension of the text range based change
tracking to record and apply table column deletions with full
Undo/Redo support.

Add property HasTextChangesOnly to com::sun::star::text::CellProperties.

During recording of track changes, deletion of table columns wasn't
recorded: columns were removed completely with their text content.
Now the deletion deletes the cell content with change tracking,
setting also HasTextChangesOnly property of table cells to FALSE. If
a tracked deletion is accepted in a deleted column, and the result
is an empty cell, the column will be removed, if HasTextChangesOnly
property of the deleted cell is FALSE.

Note: Deletion of empty columns isn't recorded. Hiding deleted
columns hasn't been supported yet in the Hide Changes mode.

Follow-up to commit 05366b8e6683363688de8708a3d88cf144c7a2bf
"tdf#60382 sw offapi: add change tracking of table/row deletion".

Change-Id: I36915d7a58f66b4a3bdaf90495cb998d29c36561
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/151593
Tested-by: Jenkins
Reviewed-by: László Németh <nemeth@numbertext.org>

1 files changed, 6 insertions, 0 deletions

diff --git a/offapi/com/sun/star/text/CellProperties.idl b/offapi/com/sun/star/text/CellProperties.idl
index 2448c25c8439..58c9718c0dc2 100644
--- a/offapi/com/sun/star/text/CellProperties.idl
+++ b/offapi/com/sun/star/text/CellProperties.idl
@@ -130,6 +130,12 @@ published service CellProperties
         @since LibreOffice 6.3
      */
     [optional, readonly, property] com::sun::star::text::XText ParentText;
+
+    /** If TRUE, the table cell wasn't deleted or inserted with its tracked cell content
+
+        @since LibreOffice 7.6
+     */
+    [optional, property, maybevoid] boolean HasTextChangesOnly;
 };