#include "buffer.h"
#include "debug.h"
#include "BufferView.h"
-#include "funcrequest.h"
#include "iterators.h"
#include "lyxtext.h"
#include "paragraph.h"
-#include "insets/updatableinset.h"
-#include "insets/insettext.h"
+#include "insets/updatableinset.h" // for dynamic_cast<UpdatableInset *>
-#include <iostream>
-
-using std::endl;
using lyx::paroffset_type;
/// Whether actions are not added to the undo stacks.
bool undo_frozen;
-Undo::Undo(undo_kind kind_arg, int text_arg,
- int first, int last,
- int cursor, int cursor_pos_arg,
- ParagraphList const & par)
+Undo::Undo(undo_kind kind_, int text_, int index_,
+ int first_par_, int end_par_, int cursor_par_, int cursor_pos_)
:
- kind(kind_arg),
- text(text_arg),
- first_par_offset(first),
- last_par_offset(last),
- cursor_par_offset(cursor),
- cursor_pos(cursor_pos_arg),
- pars(par)
+ kind(kind_),
+ text(text_),
+ index(index_),
+ first_par(first_par_),
+ end_par(end_par_),
+ cursor_par(cursor_par_),
+ cursor_pos(cursor_pos_)
{}
+namespace {
+
std::ostream & operator<<(std::ostream & os, Undo const & undo)
{
return os << " text: " << undo.text
- << " first: " << undo.first_par_offset
- << " last: " << undo.last_par_offset
- << " cursor: " << undo.cursor_par_offset
+ << " index: " << undo.index
+ << " first: " << undo.first_par
+ << " from end: " << undo.end_par
+ << " cursor: " << undo.cursor_par
<< "/" << undo.cursor_pos;
}
-namespace {
+// translates LyXText pointer into offset count from document begin
+ParIterator text2pit(LyXText * text, int & tcount)
+{
+ tcount = 0;
+ Buffer * buf = text->bv()->buffer();
+ ParIterator pit = buf->par_iterator_begin();
+ ParIterator end = buf->par_iterator_end();
+
+ // it.text() returns 0 for outermost text.
+ if (text == text->bv()->text)
+ return pit;
+
+ for ( ; pit != end; ++pit, ++tcount)
+ if (pit.text() == text)
+ return pit;
+ lyxerr << "undo: should not happen" << std::endl;
+ return end;
+}
+
+
+// translates offset from buffer begin to ParIterator
+ParIterator num2pit(BufferView * bv, int num)
+{
+ Buffer * buf = bv->buffer();
+ ParIterator pit = buf->par_iterator_begin();
+ ParIterator end = buf->par_iterator_end();
+
+ for ( ; num && pit != end; ++pit, --num)
+ ;
+
+ if (pit != end)
+ return pit;
+
+ // don't crash early...
+ lyxerr << "undo: num2pit: num: " << num << std::endl;
+ BOOST_ASSERT(false);
+ return buf->par_iterator_begin();
+}
+
+
+// translates offset from buffer begin to LyXText
+LyXText * pit2text(BufferView * bv, ParIterator const & pit)
+{
+ LyXText * text = pit.text();
+ return text ? text : bv->text;
+}
+
void recordUndo(Undo::undo_kind kind,
- LyXText * text, paroffset_type firstpar, paroffset_type lastpar,
+ LyXText * text, paroffset_type first_par, paroffset_type last_par,
limited_stack<Undo> & stack)
{
Buffer * buf = text->bv()->buffer();
- ParagraphList & plist = text->ownerParagraphs();
- ParagraphList::iterator first = plist.begin();
- advance(first, firstpar);
- ParagraphList::iterator last = plist.begin();
- advance(last, lastpar);
-
- // try to find the appropriate list by counting the
- // texts from buffer begin
- ParIterator null = buf->par_iterator_end();
-
- int tcount = 0;
- // it.text() returns 0 for outermost text.
- if (text != text->bv()->text)
- for (ParIterator it = buf->par_iterator_begin(); it != null; ++it, ++tcount)
- if (it.text() == text)
- break;
-
- // and calculate a stable reference to them
- int const first_offset = firstpar;
- int const last_offset = plist.size() - lastpar;
+ int const end_par = text->ownerParagraphs().size() - last_par;
// Undo::ATOMIC are always recorded (no overlapping there).
// overlapping only with insert and delete inside one paragraph:
// nobody wants all removed character appear one by one when undoing.
- if (! undo_finished && kind != Undo::ATOMIC) {
+ if (!undo_finished && kind != Undo::ATOMIC) {
// Check whether storing is needed.
- if (! buf->undostack().empty()
+ 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) {
+ && buf->undostack().top().first_par == first_par
+ && buf->undostack().top().end_par == end_par) {
// No additonal undo recording needed -
// effectively, we combine undo recordings to one.
return;
}
}
- // Record the cursor position in a stable way.
- int const cursor_offset = text->cursor.par();
-
// make and push the Undo entry
- stack.push(Undo(kind, tcount,
- first_offset, last_offset,
- cursor_offset, text->cursor.pos(),
- ParagraphList()));
- lyxerr << "undo record: " << stack.top() << endl;
+ int textnum;
+ ParIterator pit = text2pit(text, textnum);
+ stack.push(Undo(kind, textnum, pit.index(),
+ first_par, end_par, text->cursor.par(), text->cursor.pos()));
+ lyxerr << "undo record: " << stack.top() << std::endl;
// record the relevant paragraphs
ParagraphList & undo_pars = stack.top().pars;
- for (ParagraphList::iterator it = first; it != last; ++it) {
+ ParagraphList & plist = text->ownerParagraphs();
+ ParagraphList::iterator first = plist.begin();
+ advance(first, first_par);
+ ParagraphList::iterator last = plist.begin();
+ advance(last, last_par);
+
+ for (ParagraphList::iterator it = first; it != last; ++it)
undo_pars.push_back(*it);
- undo_pars.back().id(it->id());
- }
undo_pars.push_back(*last);
- undo_pars.back().id(last->id());
// and make sure that next time, we should be combining if possible
undo_finished = false;
}
-// Returns false if no undo possible.
+// returns false if no undo possible
bool performUndoOrRedo(BufferView * bv, Undo const & undo)
{
- lyxerr << "undo, performing: " << undo << endl;
- Buffer * buf = bv->buffer();
- ParIterator plit = buf->par_iterator_begin();
- ParIterator null = buf->par_iterator_end();
-
- int tcount = undo.text;
- for ( ; tcount && plit != null; ++plit, --tcount)
- ;
-
- LyXText * text = plit.text();
- if (!text)
- text = bv->text;
+ lyxerr << "undo, performing: " << undo << std::endl;
+ ParIterator pit = num2pit(bv, undo.text);
+ LyXText * text = pit2text(bv, pit);
ParagraphList & plist = text->ownerParagraphs();
// remove new stuff between first and last
{
ParagraphList::iterator first = plist.begin();
- advance(first, undo.first_par_offset);
+ advance(first, undo.first_par);
ParagraphList::iterator last = plist.begin();
- advance(last, plist.size() - undo.last_par_offset);
+ advance(last, plist.size() - undo.end_par);
plist.erase(first, ++last);
}
plist.assign(undo.pars.begin(), undo.pars.end());
} else {
ParagraphList::iterator first = plist.begin();
- advance(first, undo.first_par_offset);
+ advance(first, undo.first_par);
plist.insert(first, undo.pars.begin(), undo.pars.end());
}
// set cursor
- lyxerr << "undo, text: " << text << " inset: " << plit.inset() << endl;
- InsetOld * inset = plit.inset();
- if (inset) {
- // Magic needed to cope with inset locking
- FuncRequest cmd(bv, LFUN_INSET_EDIT, "left");
- inset->localDispatch(cmd);
- }
+ lyxerr << "undo, text: " << undo.text
+ << " inset: " << pit.inset()
+ << " index: " << undo.index
+ << " par: " << undo.cursor_par
+ << " pos: " << undo.cursor_pos
+ << std::endl;
// set cursor again to force the position to be the right one
- text->setCursorIntern(undo.cursor_par_offset, undo.cursor_pos);
+ text->cursor.par(undo.cursor_par);
+ text->cursor.pos(undo.cursor_pos);
// clear any selection
text->clearSelection();
text->selection.cursor = text->cursor;
text->updateCounters();
- // rebreak the entire document
+ // rebreak the entire lyxtext
bv->text->fullRebreak();
+ pit.lockPath(bv);
+
finishUndo();
return true;
}
-// Returns false if no undo possible.
+// returns false if no undo possible
bool textUndoOrRedo(BufferView * bv,
limited_stack<Undo> & stack, limited_stack<Undo> & otherstack)
{
if (stack.empty()) {
- /*
- * Finish the undo operation in the case there was no entry
- * on the stack to perform.
- */
+ // nothing to do
freezeUndo();
bv->unlockInset(bv->theLockingInset());
finishUndo();
if (!undo_frozen) {
otherstack.push(undo);
otherstack.top().pars.clear();
- Buffer * buf = bv->buffer();
- ParagraphList & plist = buf->paragraphs();
- if (undo.first_par_offset + undo.last_par_offset <= int(plist.size())) {
+ ParIterator pit = num2pit(bv, undo.text);
+ ParagraphList & plist = pit.plist();
+ if (undo.first_par + undo.end_par <= int(plist.size())) {
ParagraphList::iterator first = plist.begin();
- advance(first, undo.first_par_offset);
+ advance(first, undo.first_par);
ParagraphList::iterator last = plist.begin();
- advance(last, plist.size() - undo.last_par_offset + 1);
+ advance(last, plist.size() - undo.end_par + 1);
otherstack.top().pars.insert(otherstack.top().pars.begin(), first, last);
}
- otherstack.top().cursor_pos = text
- lyxerr << " undo other: " << otherstack.top() << endl;
+ LyXText * text = pit2text(bv, pit);
+ otherstack.top().cursor_pos = text->cursor.pos();
+ otherstack.top().cursor_par = text->cursor.par();
+ lyxerr << " undo other: " << otherstack.top() << std::endl;
}
// Now we can unlock the inset for safety because the inset
void freezeUndo()
{
- // This is dangerous and for internal use only.
+ // this is dangerous and for internal use only
undo_frozen = true;
}
void unFreezeUndo()
{
- // This is dangerous and for internal use only.
+ // this is dangerous and for internal use only
undo_frozen = false;
}
void finishUndo()
{
- // Makes sure the next operation will be stored.
+ // makes sure the next operation will be stored
undo_finished = true;
}
void recordUndo(Undo::undo_kind kind,
LyXText const * text, paroffset_type first, paroffset_type last)
{
- if (!undo_frozen) {
- Buffer * buf = text->bv()->buffer();
- recordUndo(kind, const_cast<LyXText *>(text),
- first, last, buf->undostack());
- buf->redostack().clear();
- }
+ if (undo_frozen)
+ return;
+ Buffer * buf = text->bv()->buffer();
+ recordUndo(kind, const_cast<LyXText *>(text), first, last, buf->undostack());
+ buf->redostack().clear();
}
projects / lyx.git / blobdiff