using boost::shared_ptr;
-/// the flag used by FinishUndo();
+/// The flag used by FinishUndo().
bool undo_finished;
-/// whether actions are not added to the undo stacks
+/// Whether actions are not added to the undo stacks.
bool undo_frozen;
namespace {
-/// utility to return the cursor
+/// Utility to return the cursor.
LyXCursor const & undoCursor(BufferView * bv)
{
if (bv->theLockingInset())
return bv->text->cursor;
}
+
/**
- * returns a pointer to the very first Paragraph depending of where we are
- * so it will return the first paragraph of the buffer or the first paragraph
- * of the textinset we're in.
+ * Returns a pointer to the very first Paragraph depending of where
+ * we are so it will return the first paragraph of the buffer or the
+ * first paragraph of the textinset we're in.
*/
Paragraph * firstUndoParagraph(BufferView * bv, int inset_id)
{
}
-// returns false if no undo possible
+// Returns false if no undo possible.
bool textHandleUndo(BufferView * bv, Undo & undo)
{
Buffer * b = bv->buffer();
Paragraph * const before = &*b->getParFromID(undo.number_of_before_par);
Paragraph * const behind = &*b->getParFromID(undo.number_of_behind_par);
- // if there's no before take the beginning
- // of the document for redoing
+ // If there's no before take the beginning
+ // of the document for redoing.
if (!before) {
LyXText * t = bv->text;
int num = undo.number_of_inset_id;
t->setCursorIntern(firstUndoParagraph(bv, num), 0);
}
- // replace the paragraphs with the undo informations
+ // Replace the paragraphs with the undo informations.
Paragraph * undopar = undo.par;
- undo.par = 0; /* otherwise the undo destructor would
- delete the paragraph */
-
- // get last undo par and set the right(new) inset-owner of the
- // paragraph if there is any. This is not needed if we don't have
- // a paragraph before because then in is automatically done in the
- // function which assigns the first paragraph to an InsetText. (Jug)
+ // Otherwise the undo destructor would
+ // delete the paragraph.
+ undo.par = 0;
+
+ // Get last undo par and set the right(new) inset-owner of the
+ // paragraph if there is any. This is not needed if we don't
+ // have a paragraph before because then in is automatically
+ // done in the function which assigns the first paragraph to
+ // an InsetText. (Jug)
Paragraph * lastundopar = undopar;
if (lastundopar) {
Inset * in = 0;
vector<Paragraph *> deletelist;
- // now add old paragraphs to be deleted
+ // Now add old paragraphs to be deleted.
if (before != behind || (!behind && !before)) {
Paragraph * deletepar;
if (before)
Paragraph * tmppar = deletepar;
deletepar = deletepar->next();
- // a memory optimization for edit:
+ // A memory optimization for edit:
// Only layout information
// is stored in the undo. So restore
// the text informations.
// next/prev pointer in the paragraphs so that a rebuild of
// the LyXText works!!!
- // thread the end of the undo onto the par in front if any
+ // Thread the end of the undo onto the par in front if any.
if (lastundopar) {
lastundopar->next(behind);
if (behind)
behind->previous(lastundopar);
}
- // put the new stuff in the list if there is one
+ // Put the new stuff in the list if there is one.
if (undopar) {
undopar->previous(before);
if (before)
}
}
} else {
- // We enter here on DELETE undo operations where we have to
- // substitue the second paragraph with the first if the removed
- // one is the first!
+ // We enter here on DELETE undo operations where we
+ // have to substitue the second paragraph with the
+ // first if the removed one is the first.
if (!before && behind) {
int id = firstUndoParagraph(bv, undo.number_of_inset_id)->id();
Paragraph * op = &*bv->buffer()->getParFromID(id);
}
- // Set the cursor for redoing
- if (before) { // if we have a par before the undopar
+ // Set the cursor for redoing.
+ // If we have a par before the undopar.
+ if (before) {
Inset * it = before->inInset();
if (it)
it->getLyXText(bv)->setCursorIntern(before, 0);
else
bv->text->setCursorIntern(before, 0);
}
+
// we are not ready for this we cannot set the cursor for a paragraph
// which is not already in a row of LyXText!!!
#if 0
#endif
Paragraph * endpar = 0;
- // calculate the endpar for redoing the paragraphs.
+
+ // Calculate the endpar for redoing the paragraphs.
if (behind)
endpar = behind->next();
t = bv->text;
}
t->setCursorIntern(tmppar, undo.cursor_pos);
- // clear any selection and set the selection cursor
- // for an evt. new selection.
+ // Clear any selection and set the selection
+ // cursor for an evt. new selection.
t->clearSelection();
t->selection.cursor = t->cursor;
t->updateCounters();
t = bv->text;
}
t->setCursorIntern(tmppar, undo.cursor_pos);
- // clear any selection and set the selection cursor
- // for an evt. new selection.
+ // Clear any selection and set the selection
+ // cursor for an evt. new selection.
t->clearSelection();
t->selection.cursor = t->cursor;
t->updateCounters();
}
}
- // And here it's safe enough to delete all removed paragraphs
+ // And here it's safe enough to delete all removed paragraphs.
vector<Paragraph *>::iterator pit = deletelist.begin();
- if (pit != deletelist.end()) {
- for(;pit != deletelist.end(); ++pit) {
- (*pit)->previous(0);
- (*pit)->next(0);
- delete (*pit);
- }
- }
+ for(; pit != deletelist.end(); ++pit) {
+ (*pit)->previous(0);
+ (*pit)->next(0);
+ delete (*pit);
+ }
finishUndo();
bv->text->postPaint(0);
// EDIT is special since only layout information, not the
// contents of a paragaph are stored.
if (!undo_finished && (kind != Undo::EDIT) && (kind != Undo::FINISH)) {
- // check whether storing is needed
+ // Check whether storing is needed.
if (!b->undostack.empty() &&
b->undostack.top()->kind == kind &&
b->undostack.top()->number_of_before_par == before_number &&
b->undostack.top()->number_of_behind_par == behind_number) {
- // no undo needed
+ // No undo needed.
return false;
}
}
- // create a new Undo
- Paragraph * undopar = 0; // nothing to replace (undo of delete maybe)
+ // Create a new Undo.
+ Paragraph * undopar = 0;
Paragraph * start = first;
Paragraph * end = 0;
Paragraph * tmppar = start;
Paragraph * tmppar2 = new Paragraph(*tmppar, true);
- // a memory optimization: Just store the layout information
- // when only edit
+ // A memory optimization: Just store the layout
+ // information when only edit.
if (kind == Undo::EDIT) {
tmppar2->clearContents();
}
}
-// returns false if no undo possible
+// Returns false if no undo possible.
bool textUndoOrRedo(BufferView * bv,
limited_stack<boost::shared_ptr<Undo> > & stack,
limited_stack<boost::shared_ptr<Undo> > & otherstack)
}
}
- // now we can unlock the inset for saftey because the inset pointer could
- // be changed during the undo-function. Anyway if needed we have to lock
- // the right inset/position if this is requested.
+ // Now we can unlock the inset for saftey because the inset
+ // pointer could be changed during the undo-function. Anyway
+ // if needed we have to lock the right inset/position if this
+ // is requested.
freezeUndo();
bv->unlockInset(bv->theLockingInset());
bool const ret = textHandleUndo(bv, *undo.get());
} // namespace anon
+
void finishUndo()
{
- // makes sure the next operation will be stored
+ // Makes sure the next operation will be stored.
undo_finished = true;
}
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;
}
bool textUndo(BufferView * bv)
{
- return textUndoOrRedo(bv, bv->buffer()->undostack, bv->buffer()->redostack);
+ return textUndoOrRedo(bv, bv->buffer()->undostack,
+ bv->buffer()->redostack);
}
bool textRedo(BufferView * bv)
{
- return textUndoOrRedo(bv, bv->buffer()->redostack, bv->buffer()->undostack);
+ return textUndoOrRedo(bv, bv->buffer()->redostack,
+ bv->buffer()->undostack);
}
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