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Do not record undo when typing two spaces has been blocked

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Move the code that forbids character insertion in its own helper function.

Call this function before doing a recordUndo. This avoids to mark the
document dirty in cases where nothing happens.

Part of bug #10721.
This commit is contained in:
Jean-Marc Lasgouttes 2017-07-11 12:15:29 +02:00
parent 7945ba0cb0
commit cfd27dd219
1 changed files with 46 additions and 42 deletions
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88
src/Text.cpp
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@ -908,12 +908,58 @@ void Text::insertStringAsParagraphs(Cursor & cur, docstring const & str,
}
namespace {
bool canInsertChar(Cursor const & cur, char_type c)
{
Paragraph const & par = cur.paragraph();
// If not in free spacing mode, check if there will be two blanks together or a blank at
// the beginning of a paragraph.
if (!par.isFreeSpacing() && isLineSeparatorChar(c)) {
if (cur.pos() == 0) {
cur.message(_(
"You cannot insert a space at the "
"beginning of a paragraph. Please read the Tutorial."));
return false;
}
// LASSERT: Is it safe to continue here?
LASSERT(cur.pos() > 0, /**/);
if ((par.isLineSeparator(cur.pos() - 1) || par.isNewline(cur.pos() - 1))
&& !par.isDeleted(cur.pos() - 1)) {
cur.message(_(
"You cannot type two spaces this way. "
"Please read the Tutorial."));
return false;
}
}
// Prevent to insert uncodable characters in verbatim and ERT
// (workaround for bug 9012)
// Don't do it for listings inset, since InsetListings::latex() tries
// to switch to a usable encoding which works in many cases (bug 9102).
if (par.isPassThru() && cur.inset().lyxCode() != LISTINGS_CODE &&
cur.current_font.language()) {
Encoding const * e = cur.current_font.language()->encoding();
if (!e->encodable(c)) {
cur.message(_("Character is uncodable in verbatim paragraphs."));
return false;
}
}
return true;
}
}
// insert a character, moves all the following breaks in the
// same Paragraph one to the right and make a rebreak
void Text::insertChar(Cursor & cur, char_type c)
{
LBUFERR(this == cur.text());
if (!canInsertChar(cur,c))
return;
cur.recordUndo(INSERT_UNDO);
TextMetrics const & tm = cur.bv().textMetrics(this);
@ -922,9 +968,6 @@ void Text::insertChar(Cursor & cur, char_type c)
// try to remove this
pit_type const pit = cur.pit();
bool const freeSpacing = par.layout().free_spacing ||
par.isFreeSpacing();
if (lyxrc.auto_number) {
static docstring const number_operators = from_ascii("+-/*");
static docstring const number_unary_operators = from_ascii("+-");
@ -1007,45 +1050,6 @@ void Text::insertChar(Cursor & cur, char_type c)
}
}
// Next check, if there will be two blanks together or a blank at
// the beginning of a paragraph.
// I decided to handle blanks like normal characters, the main
// difference are the special checks when calculating the row.fill
// (blank does not count at the end of a row) and the check here
// When the free-spacing option is set for the current layout,
// disable the double-space checking
if (!freeSpacing && isLineSeparatorChar(c)) {
if (cur.pos() == 0) {
cur.message(_(
"You cannot insert a space at the "
"beginning of a paragraph. Please read the Tutorial."));
return;
}
// LASSERT: Is it safe to continue here?
LASSERT(cur.pos() > 0, /**/);
if ((par.isLineSeparator(cur.pos() - 1) || par.isNewline(cur.pos() - 1))
&& !par.isDeleted(cur.pos() - 1)) {
cur.message(_(
"You cannot type two spaces this way. "
"Please read the Tutorial."));
return;
}
}
// Prevent to insert uncodable characters in verbatim and ERT
// (workaround for bug 9012)
// Don't do it for listings inset, since InsetListings::latex() tries
// to switch to a usable encoding which works in many cases (bug 9102).
if (cur.paragraph().isPassThru() && owner_->lyxCode() != LISTINGS_CODE &&
cur.current_font.language()) {
Encoding const * e = cur.current_font.language()->encoding();
if (!e->encodable(c)) {
cur.message(_("Character is uncodable in verbatim paragraphs."));
return;
}
}
pos_type pos = cur.pos();
if (!cur.paragraph().isPassThru() && owner_->lyxCode() != IPA_CODE &&
cur.real_current_font.fontInfo().family() != TYPEWRITER_FAMILY &&