[LyX/master] Lock deleted table cell for editing (#12799)

[Juergen Spitzmueller]

commit c988183d6f5b1e1d24dda3bf0a3694fb7a65590d
Author: Juergen Spitzmueller <sp...@lyx.org>
Date:   Sun Mar 2 09:52:37 2025 +0100

    Lock deleted table cell for editing (#12799)
---
 src/insets/InsetTabular.cpp | 16 +++++++++++++++-
 src/insets/InsetTabular.h   |  4 ++++
 2 files changed, 19 insertions(+), 1 deletion(-)

diff --git a/src/insets/InsetTabular.cpp b/src/insets/InsetTabular.cpp
index 2de2caa8ba..6d1556caa9 100644
--- a/src/insets/InsetTabular.cpp
+++ b/src/insets/InsetTabular.cpp
@@ -4795,7 +4795,7 @@ bool Tabular::hasNewlines(idx_type cell) const
 InsetTableCell::InsetTableCell(Buffer * buf)
        : InsetText(buf, InsetText::PlainLayout), isFixedWidth(false), 
isVarwidth(false),
          isMultiColumn(false), isMultiRow(false), mr_rows(1), 
isCaptionRow(false),
-         contentAlign(LYX_ALIGN_CENTER)
+         contentAlign(LYX_ALIGN_CENTER), isDeleted(false)
 {}
 
 bool InsetTableCell::allowParagraphCustomization(idx_type) const
@@ -4819,9 +4819,23 @@ ColorCode InsetTableCell::backgroundColor(PainterInfo 
const & pi) const
 }
 
 
+void InsetTableCell::setChange(Change const & change)
+{
+       // Mark cell deleted
+       isDeleted = change.deleted();
+
+       InsetText::setChange(change);
+}
+
+
 bool InsetTableCell::getStatus(Cursor & cur, FuncRequest const & cmd,
        FuncStatus & status) const
 {
+       if (isDeleted) {
+               status.message(from_utf8(N_("This portion of the document is 
deleted.")));
+               status.setEnabled(false);
+               return true;
+       }
        bool enabled = true;
        switch (cmd.action()) {
        case LFUN_INSET_SPLIT:
diff --git a/src/insets/InsetTabular.h b/src/insets/InsetTabular.h
index a24d10a845..5687e61acf 100644
--- a/src/insets/InsetTabular.h
+++ b/src/insets/InsetTabular.h
@@ -107,6 +107,8 @@ public:
        bool canPaintChange(BufferView const &) const override { return false; }
        /// This assures we never output \maketitle in table cells
        bool isInTitle() const override { return true; }
+       ///
+       void setChange(Change const & change) override;
 private:
        ///
        InsetTableCell() = delete;
@@ -154,6 +156,8 @@ private:
        LyXAlignment contentAlign;
        ///
        std::string background_color;
+       ///
+       bool isDeleted;
        /// should paragraph indentation be omitted in any case?
        bool neverIndent() const override { return true; }
        ///
-- 
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