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Fixed undo crash in first paragraph by avoiding special case and doing a

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full rebreak on every undo. Undo still is unpredictable in nested insets,
but hey, one less crash is worth a beer anyway.


git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@7355 a592a061-630c-0410-9148-cb99ea01b6c8
This commit is contained in:
Asger Ottar Alstrup 2003-07-25 11:58:47 +00:00
parent 192f2c94b2
commit 8a2e3e4d73
3 changed files with 55 additions and 38 deletions
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6
src/ChangeLog
View File

@ -1,3 +1,9 @@
2003-07-25 Asger Alstrup <alstrup@lyx.org>
* undo_funcs.C (textHandleUndo): Fix undo crash in first paragraph
by not having a special case, and always doing a full rebreak of
the document after undo.
2003-07-23 Angus Leeming <leeming@lyx.org>
* factory.C (createInset): InsetExternal::setParams now takes a

61
src/undo_funcs.C
View File

@ -114,15 +114,11 @@ bool textHandleUndo(BufferView * bv, Undo & undo)
//LyXText * text = inset ? inset->getLyXText(bv) : bv->text;
LyXText * text = bv->text;
lyxerr << "handle: text: " << text << "\n";
if (undo.first_par_offset) {
ParagraphList::iterator redo = plist->begin();
lyxerr << "handle: 1\n";
advance(redo, undo.first_par_offset);
lyxerr << "handle: 2\n";
text->setCursorIntern(plist->begin(), 0);
}
// The cursor should be sane, so we will put it to the top
text->setCursorIntern(plist->begin(), 0);
lyxerr << "handle: 3\n";
text->redoParagraphs(text->cursor, plist->end());
// Rebreak the entire document
text->fullRebreak();
lyxerr << "handle: after redo\n";
if (inset) {
@ -192,6 +188,7 @@ void createUndo(BufferView * bv, Undo::undo_kind kind,
plist = &buf->paragraphs;
// this is what we'd like to have in the end for small grained undo
for (ParIterator it = buf->par_iterator_begin(); it != null; ++it) {
// This does not work if we are nested twice or more
if (it->id() == first->id())
first = it.outerPar();
if (it->id() == last->id())
@ -208,25 +205,23 @@ void createUndo(BufferView * bv, Undo::undo_kind kind,
}
// Undo::EDIT and Undo::FINISH are
// always finished. (no overlapping there)
// Undo::EDIT and Undo::FINISH are always finished.
// (no overlapping there)
// overlapping only with insert and delete inside one paragraph:
// Nobody wants all removed character
// appear one by one when undoing.
// Nobody wants all removed character appear one by one when undoing.
// EDIT is special since only layout information, not the
// contents of a paragaph are stored.
if (!undo_finished && kind != Undo::EDIT && kind != Undo::FINISH) {
if (! undo_finished && kind != Undo::EDIT && kind != Undo::FINISH) {
// Check whether storing is needed.
if (!buf->undostack.empty() &&
buf->undostack.top().kind == kind &&
buf->undostack.top().first_par_offset == first_offset &&
buf->undostack.top().last_par_offset == last_offset) {
// No undo needed.
if (! buf->undostack.empty()
&& buf->undostack.top().kind == kind
&& buf->undostack.top().first_par_offset == first_offset
&& buf->undostack.top().last_par_offset == last_offset) {
// No undo recording needed.
return;
}
}
// Create a new Undo.
int const cursor_offset = std::distance
(text->ownerParagraphs().begin(), text->cursor.par());
@ -344,19 +339,6 @@ bool textRedo(BufferView * bv)
}
void setUndo(BufferView * bv, Undo::undo_kind kind)
{
setUndo(bv, kind, bv->text->cursor.par());
}
void setUndo(BufferView * bv, Undo::undo_kind kind,
ParagraphList::iterator first)
{
setUndo(bv, kind, first, first);
}
void setUndo(BufferView * bv, Undo::undo_kind kind,
ParagraphList::iterator first, ParagraphList::iterator last)
{
@ -367,7 +349,20 @@ void setUndo(BufferView * bv, Undo::undo_kind kind,
}
void setUndo(BufferView * bv, Undo::undo_kind kind,
ParagraphList::iterator first)
{
setUndo(bv, kind, first, first);
}
void setUndo(BufferView * bv, Undo::undo_kind kind)
{
setUndo(bv, kind, bv->text->cursor.par());
}
void setCursorParUndo(BufferView * bv)
{
setUndo(bv, Undo::FINISH, bv->text->cursor.par());
setUndo(bv, Undo::FINISH);
}

26
src/undo_funcs.h
View File

@ -19,23 +19,39 @@ class Paragraph;
/// returns false if no undo possible
bool textUndo(BufferView *);
/// returns false if no redo possible
bool textRedo(BufferView *);
/// makes sure the next operation will be stored
void finishUndo();
/// Whilst undo is frozen, all actions do not get added
/// to the undo stack
/**
* Whilst undo is frozen, all actions do not get added
* to the undo stack
*/
void freezeUndo();
/// Track undos again
void unFreezeUndo();
/// FIXME
/**
* Record undo information - call with the first paragraph that will be changed
* and the last paragraph that will be changed. So we give an inclusive
* range.
* This is called before you make the changes to the paragraph, and it
* will record the original information of the paragraphs in the undo stack.
*/
void setUndo(BufferView *, Undo::undo_kind kind,
ParagraphList::iterator first, ParagraphList::iterator last);
/// Convienience: Prepare undo when change in a single paragraph.
void setUndo(BufferView *, Undo::undo_kind kind,
ParagraphList::iterator first);
// set undo for containing paragraph
/// Convienience: Prepare undo for the paragraph that contains the cursor
void setUndo(BufferView *, Undo::undo_kind kind);
/// FIXME
/// Convienience: Prepare and finish undo for the paragraph that contains the cursor
void setCursorParUndo(BufferView *);
/// Are we avoiding tracking undos currently ?