commit c5e4043fa3553987f34f32819471ff8b00f5932a
Author: Juergen Spitzmueller <[email protected]>
Date: Wed Feb 22 17:31:32 2023 +0100
Warn user when OUTLINE_IN/OUT is about to flatten the structure (#11178)
---
src/Text3.cpp | 39 +++++++++++++++++++++++++++++++++++++++
1 files changed, 39 insertions(+), 0 deletions(-)
diff --git a/src/Text3.cpp b/src/Text3.cpp
index d077dde..a45eb39 100644
--- a/src/Text3.cpp
+++ b/src/Text3.cpp
@@ -560,6 +560,45 @@ static void outline(OutlineOp mode, Cursor & cur, Text *
text)
}
case OutlineIn:
case OutlineOut: {
+ // We first iterate without actually doing something
+ // in order to check whether the action flattens the
structure.
+ // If so, warn (#11178).
+ ParagraphList::iterator cstart = start;
+ bool strucchange = false;
+ for (; cstart != finish; ++cstart) {
+ toclevel = buf.text().getTocLevel(distance(bgn,
cstart));
+ if (toclevel == Layout::NOT_IN_TOC)
+ continue;
+
+ DocumentClass const & tc =
buf.params().documentClass();
+ int const newtoclevel =
+ (mode == OutlineIn ? toclevel + 1 :
toclevel - 1);
+
+ bool found = false;
+ for (auto const & lay : tc) {
+ if (lay.toclevel == newtoclevel
+ && lay.isNumHeadingLabelType()
+ &&
cstart->layout().isNumHeadingLabelType()) {
+ found = true;
+ break;
+ }
+ }
+ if (!found) {
+ strucchange = true;
+ break;
+ }
+ }
+ if (strucchange
+ && frontend::Alert::prompt(_("Action flattens
document structure"),
+ _("This action will
cause some headings that have been "
+ "on different level
before to be on the same level "
+ "since there is no
more lower or higher heading level. "
+ "Continue still?"),
+ 1, 1,
+ _("&Yes, continue
nonetheless"),
+ _("&No, quit
operation")) == 1)
+ break;
+
pit_type const len = distance(start, finish);
buf.undo().recordUndo(cur, pit, pit + len - 1);
for (; start != finish; ++start) {
--
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