lyx_mirror/src/undo.C

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/**
* \file undo.C
* This file is part of LyX, the document processor.
* Licence details can be found in the file COPYING.
*
* \author Asger Alstrup
* \author Lars Gullik Bj<EFBFBD>nnes
* \author John Levon
* \author Andr<EFBFBD> P<EFBFBD>nitz
* \author J<EFBFBD>rgen Vigna
*
* Full author contact details are available in file CREDITS.
*/
#include <config.h>
#include "undo.h"
#include "buffer.h"
#include "cursor.h"
#include "debug.h"
#include "BufferView.h"
#include "lyxtext.h"
#include "paragraph.h"
#include "mathed/math_support.h"
#include <algorithm>
using std::advance;
the stuff from the sneak preview: For one, it still contains a few things that are already in CVS (the 'brown paperbag' changes). Secondly, this changes the ParagraphList to a std::vector but does not yet take full advantage of it except removing LyXText::parOffset() and similar. I had an extensive talk with my profiler and we are happy nevertheless. This also moves almost all Cut&Paste specific stuff from text.C to CutAndPaste.C. Much smaller interface now... Namespace CutAndPaste is now lyx::cap::. Was inconsistent with the rest.... Make ParagraphList a proper class. We'll need this later for a specialized erase/insert. Remove some unneeded prototypes and function declarations Use ParameterStruct directly instead of ShareContainer<ParameterStruct> Inline a few accesses to CursorSlice members as suggested by the profiler. Fix commandline conversion crash reported by Kayvan. Replace PosIterator by DocumentIterator. The latter can also iterate through math and nested text in math... Remove math specific hack from Documentiterator Derive InsetCollapsable from InsetText instead of using an InsetText member. This give us the opportunity to get rid of the InsetOld::owner_ backpointer. Cosmetics in CutAndPaste.C and cursor.C. Fix nasty crash (popping slices off an empty selection anchor). Add a few asserts. Remove all 'manual' update calls. We do now one per user interaction which is completely sufficient. git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@8527 a592a061-630c-0410-9148-cb99ea01b6c8
2004-03-25 09:16:36 +00:00
using lyx::par_type;
using std::endl;
namespace {
/// The flag used by finishUndo().
bool undo_finished;
std::ostream & operator<<(std::ostream & os, Undo const & undo)
{
return os << " from: " << undo.from
<< " end: " << undo.end
<< " cursor:\n" << undo.cursor;
}
void recordUndo(Undo::undo_kind kind,
the stuff from the sneak preview: For one, it still contains a few things that are already in CVS (the 'brown paperbag' changes). Secondly, this changes the ParagraphList to a std::vector but does not yet take full advantage of it except removing LyXText::parOffset() and similar. I had an extensive talk with my profiler and we are happy nevertheless. This also moves almost all Cut&Paste specific stuff from text.C to CutAndPaste.C. Much smaller interface now... Namespace CutAndPaste is now lyx::cap::. Was inconsistent with the rest.... Make ParagraphList a proper class. We'll need this later for a specialized erase/insert. Remove some unneeded prototypes and function declarations Use ParameterStruct directly instead of ShareContainer<ParameterStruct> Inline a few accesses to CursorSlice members as suggested by the profiler. Fix commandline conversion crash reported by Kayvan. Replace PosIterator by DocumentIterator. The latter can also iterate through math and nested text in math... Remove math specific hack from Documentiterator Derive InsetCollapsable from InsetText instead of using an InsetText member. This give us the opportunity to get rid of the InsetOld::owner_ backpointer. Cosmetics in CutAndPaste.C and cursor.C. Fix nasty crash (popping slices off an empty selection anchor). Add a few asserts. Remove all 'manual' update calls. We do now one per user interaction which is completely sufficient. git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@8527 a592a061-630c-0410-9148-cb99ea01b6c8
2004-03-25 09:16:36 +00:00
LCursor & cur, par_type first_par, par_type last_par,
limited_stack<Undo> & stack)
{
BOOST_ASSERT(first_par <= cur.lastpar());
BOOST_ASSERT(last_par <= cur.lastpar());
if (first_par > last_par)
std::swap(first_par, last_par);
// create the position information of the Undo entry
Undo undo;
undo.kind = kind;
undo.cursor = StableDocIterator(cur);
undo.from = first_par;
undo.end = cur.lastpar() - last_par;
// Undo::ATOMIC are always recorded (no overlapping there).
// As nobody wants all removed character appear one by one when undoing,
// we want combine 'similar' non-ATOMIC undo recordings to one.
if (!undo_finished
&& kind != Undo::ATOMIC
&& !stack.empty()
&& stack.top().cursor.size() == undo.cursor.size()
&& stack.top().kind == undo.kind
&& stack.top().from == undo.from
&& stack.top().end == undo.end)
return;
// fill in the real data to be saved
if (cur.inMathed()) {
// simply use the whole cell
undo.array = asString(cur.cell());
} else {
// some more effort needed here as 'the whole cell' of the
// main LyXText _is_ the whole document.
// record the relevant paragraphs
LyXText * text = cur.text();
BOOST_ASSERT(text);
ParagraphList & plist = text->paragraphs();
ParagraphList::iterator first = plist.begin();
advance(first, first_par);
ParagraphList::iterator last = plist.begin();
advance(last, last_par + 1);
undo.pars = ParagraphList(first, last);
}
// push the undo entry to undo stack
//lyxerr << "undo record: " << stack.top() << std::endl;
stack.push(undo);
// next time we'll try again to combine entries if possible
undo_finished = false;
}
void performUndoOrRedo(BufferView & bv, Undo const & undo)
{
LCursor & cur = bv.cursor();
lyxerr << "undo, performing: " << undo << std::endl;
cur.setCursor(undo.cursor.asDocIterator(&bv.buffer()->inset()), false);
if (cur.inMathed()) {
// We stored the full cell here as there is not much to be
// gained by storing just 'a few' paragraphs (most if not
// all math inset cells have just one paragraph!)
asArray(undo.array, cur.cell());
} else {
// Some finer machinery is needed here.
LyXText * text = cur.text();
BOOST_ASSERT(text);
ParagraphList & plist = text->paragraphs();
// remove new stuff between first and last
ParagraphList::iterator first = plist.begin();
advance(first, undo.from);
ParagraphList::iterator last = plist.begin();
advance(last, plist.size() - undo.end);
plist.erase(first, last);
// re-insert old stuff instead
first = plist.begin();
advance(first, undo.from);
plist.insert(first, undo.pars.begin(), undo.pars.end());
}
cur.resetAnchor();
finishUndo();
}
// returns false if no undo possible
bool textUndoOrRedo(BufferView & bv,
limited_stack<Undo> & stack, limited_stack<Undo> & otherstack)
{
if (stack.empty()) {
// nothing to do
finishUndo();
return false;
}
Undo undo = stack.top();
stack.pop();
finishUndo();
// this implements redo
otherstack.push(undo);
DocIterator dit =
undo.cursor.asDocIterator(&bv.buffer()->inset());
if (dit.inMathed()) {
// Easy way out: store a full cell.
otherstack.top().array = asString(dit.cell());
} else {
// As cells might be too large in texted, store just a part
// of the paragraph list.
otherstack.top().pars.clear();
LyXText * text = dit.text();
BOOST_ASSERT(text);
ParagraphList & plist = text->paragraphs();
if (undo.from + undo.end <= int(plist.size())) {
ParagraphList::iterator first = plist.begin();
advance(first, undo.from);
ParagraphList::iterator last = plist.begin();
advance(last, plist.size() - undo.end);
otherstack.top().pars.insert(otherstack.top().pars.begin(), first, last);
}
}
otherstack.top().cursor = bv.cursor();
//lyxerr << " undo other: " << otherstack.top() << std::endl;
performUndoOrRedo(bv, undo);
return true;
}
} // namespace anon
void finishUndo()
{
// makes sure the next operation will be stored
undo_finished = true;
}
bool textUndo(BufferView & bv)
{
return textUndoOrRedo(bv, bv.buffer()->undostack(),
bv.buffer()->redostack());
}
bool textRedo(BufferView & bv)
{
return textUndoOrRedo(bv, bv.buffer()->redostack(),
bv.buffer()->undostack());
}
void recordUndo(Undo::undo_kind kind,
the stuff from the sneak preview: For one, it still contains a few things that are already in CVS (the 'brown paperbag' changes). Secondly, this changes the ParagraphList to a std::vector but does not yet take full advantage of it except removing LyXText::parOffset() and similar. I had an extensive talk with my profiler and we are happy nevertheless. This also moves almost all Cut&Paste specific stuff from text.C to CutAndPaste.C. Much smaller interface now... Namespace CutAndPaste is now lyx::cap::. Was inconsistent with the rest.... Make ParagraphList a proper class. We'll need this later for a specialized erase/insert. Remove some unneeded prototypes and function declarations Use ParameterStruct directly instead of ShareContainer<ParameterStruct> Inline a few accesses to CursorSlice members as suggested by the profiler. Fix commandline conversion crash reported by Kayvan. Replace PosIterator by DocumentIterator. The latter can also iterate through math and nested text in math... Remove math specific hack from Documentiterator Derive InsetCollapsable from InsetText instead of using an InsetText member. This give us the opportunity to get rid of the InsetOld::owner_ backpointer. Cosmetics in CutAndPaste.C and cursor.C. Fix nasty crash (popping slices off an empty selection anchor). Add a few asserts. Remove all 'manual' update calls. We do now one per user interaction which is completely sufficient. git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@8527 a592a061-630c-0410-9148-cb99ea01b6c8
2004-03-25 09:16:36 +00:00
LCursor & cur, par_type first, par_type last)
{
Buffer * buf = cur.bv().buffer();
recordUndo(kind, cur, first, last, buf->undostack());
buf->redostack().clear();
the stuff from the sneak preview: For one, it still contains a few things that are already in CVS (the 'brown paperbag' changes). Secondly, this changes the ParagraphList to a std::vector but does not yet take full advantage of it except removing LyXText::parOffset() and similar. I had an extensive talk with my profiler and we are happy nevertheless. This also moves almost all Cut&Paste specific stuff from text.C to CutAndPaste.C. Much smaller interface now... Namespace CutAndPaste is now lyx::cap::. Was inconsistent with the rest.... Make ParagraphList a proper class. We'll need this later for a specialized erase/insert. Remove some unneeded prototypes and function declarations Use ParameterStruct directly instead of ShareContainer<ParameterStruct> Inline a few accesses to CursorSlice members as suggested by the profiler. Fix commandline conversion crash reported by Kayvan. Replace PosIterator by DocumentIterator. The latter can also iterate through math and nested text in math... Remove math specific hack from Documentiterator Derive InsetCollapsable from InsetText instead of using an InsetText member. This give us the opportunity to get rid of the InsetOld::owner_ backpointer. Cosmetics in CutAndPaste.C and cursor.C. Fix nasty crash (popping slices off an empty selection anchor). Add a few asserts. Remove all 'manual' update calls. We do now one per user interaction which is completely sufficient. git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@8527 a592a061-630c-0410-9148-cb99ea01b6c8
2004-03-25 09:16:36 +00:00
//lyxerr << "undostack:\n";
//for (size_t i = 0, n = buf->undostack().size(); i != n && i < 6; ++i)
// lyxerr << " " << i << ": " << buf->undostack()[i] << std::endl;
}
void recordUndo(LCursor & cur, Undo::undo_kind kind)
{
recordUndo(kind, cur, cur.par(), cur.par());
}
void recordUndoSelection(LCursor & cur, Undo::undo_kind kind)
{
recordUndo(kind, cur, cur.selBegin().par(), cur.selEnd().par());
}
the stuff from the sneak preview: For one, it still contains a few things that are already in CVS (the 'brown paperbag' changes). Secondly, this changes the ParagraphList to a std::vector but does not yet take full advantage of it except removing LyXText::parOffset() and similar. I had an extensive talk with my profiler and we are happy nevertheless. This also moves almost all Cut&Paste specific stuff from text.C to CutAndPaste.C. Much smaller interface now... Namespace CutAndPaste is now lyx::cap::. Was inconsistent with the rest.... Make ParagraphList a proper class. We'll need this later for a specialized erase/insert. Remove some unneeded prototypes and function declarations Use ParameterStruct directly instead of ShareContainer<ParameterStruct> Inline a few accesses to CursorSlice members as suggested by the profiler. Fix commandline conversion crash reported by Kayvan. Replace PosIterator by DocumentIterator. The latter can also iterate through math and nested text in math... Remove math specific hack from Documentiterator Derive InsetCollapsable from InsetText instead of using an InsetText member. This give us the opportunity to get rid of the InsetOld::owner_ backpointer. Cosmetics in CutAndPaste.C and cursor.C. Fix nasty crash (popping slices off an empty selection anchor). Add a few asserts. Remove all 'manual' update calls. We do now one per user interaction which is completely sufficient. git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@8527 a592a061-630c-0410-9148-cb99ea01b6c8
2004-03-25 09:16:36 +00:00
void recordUndo(LCursor & cur, Undo::undo_kind kind, par_type from)
{
recordUndo(kind, cur, cur.par(), from);
}
void recordUndo(LCursor & cur, Undo::undo_kind kind,
the stuff from the sneak preview: For one, it still contains a few things that are already in CVS (the 'brown paperbag' changes). Secondly, this changes the ParagraphList to a std::vector but does not yet take full advantage of it except removing LyXText::parOffset() and similar. I had an extensive talk with my profiler and we are happy nevertheless. This also moves almost all Cut&Paste specific stuff from text.C to CutAndPaste.C. Much smaller interface now... Namespace CutAndPaste is now lyx::cap::. Was inconsistent with the rest.... Make ParagraphList a proper class. We'll need this later for a specialized erase/insert. Remove some unneeded prototypes and function declarations Use ParameterStruct directly instead of ShareContainer<ParameterStruct> Inline a few accesses to CursorSlice members as suggested by the profiler. Fix commandline conversion crash reported by Kayvan. Replace PosIterator by DocumentIterator. The latter can also iterate through math and nested text in math... Remove math specific hack from Documentiterator Derive InsetCollapsable from InsetText instead of using an InsetText member. This give us the opportunity to get rid of the InsetOld::owner_ backpointer. Cosmetics in CutAndPaste.C and cursor.C. Fix nasty crash (popping slices off an empty selection anchor). Add a few asserts. Remove all 'manual' update calls. We do now one per user interaction which is completely sufficient. git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@8527 a592a061-630c-0410-9148-cb99ea01b6c8
2004-03-25 09:16:36 +00:00
par_type from, par_type to)
{
recordUndo(kind, cur, from, to);
}
void recordUndoFullDocument(LCursor &)
{
//recordUndo(Undo::ATOMIC,
// cur, 0, cur.bv().text()->paragraphs().size() - 1);
}