]> git.lyx.org Git - lyx.git/blobdiff - src/undo_funcs.C
most of textHandleUndo
[lyx.git] / src / undo_funcs.C
index da7255979a16f0707ab8e07fa86fc92b3160b72c..f820005ebcaa49fba85ae0123657943c0c8d8413 100644 (file)
@@ -47,15 +47,15 @@ LyXCursor const & undoCursor(BufferView * bv)
  * we are so it will return the first paragraph of the buffer or the
  * first paragraph of the textinset we're in.
  */
-ParagraphList undoParagraphs(BufferView * bv, int inset_id)
+ParagraphList undoParagraphs(BufferView * bv, int inset_id)
 {
        Inset * inset = bv->buffer()->getInsetFromID(inset_id);
        if (inset) {
                ParagraphList * result = inset->getParagraphs(0);
                if (result && !result->empty())
-                       return *result;
+                       return result;
        }
-       return bv->text->ownerParagraphs();
+       return &bv->text->ownerParagraphs();
 }
 
 
@@ -80,54 +80,84 @@ bool textHandleUndo(BufferView * bv, Undo & undo)
 
        ParIterator const before = b->getParFromID(undo.number_of_before_par);
        ParIterator const behind = b->getParFromID(undo.number_of_behind_par);
-       ParIterator const end    = b->par_iterator_end();
+       ParIterator const null   = b->par_iterator_end();
 
-       // If there's no before take the beginning
-       // of the document for redoing.
-       if (before == end) {
+       int const before_id = (before == null) ? -1 : before->id();
+       int const behind_id = (behind == null) ? -1 : behind->id();
+       int const inset_id  = undo.number_of_inset_id;
+
+       ParagraphList * plist = undoParagraphs(bv, inset_id);
+
+       ParagraphList::iterator first;
+       if (before == null) {
+               // if there's no before take the beginning of parlist.
+               first = plist->begin();
                LyXText * t = bv->text;
-               int num = undo.number_of_inset_id;
-               if (undo.number_of_inset_id >= 0) {
-                       Inset * in = bv->buffer()->getInsetFromID(num);
-                       if (in) {
+               if (inset_id >= 0)
+                       if (Inset * in = bv->buffer()->getInsetFromID(inset_id))
                                t = in->getLyXText(bv);
-                       } else {
-                               num = -1;
-                       }
-               }
-               t->setCursorIntern(undoParagraphs(bv, num).begin(), 0);
+               t->setCursorIntern(plist->begin(), 0);
+       } else {
+               first = *before;
+               ++first;
+       }
+       int const first_id  = first->id();
+
+       int after_id;
+       ParagraphList::iterator after;
+       if (behind == null) {
+               // if there's no behind take the end of parlist.
+               after = plist->end();
+               after_id = -1;
+       } else {
+               after = *behind;
+               after_id = after->id();
        }
 
+       lyxerr << "\nbefore_id: " << before_id << "\n";
+       lyxerr << "first_id:  " << first_id  << "\n";
+       lyxerr << "after_id: " << after_id << "\n";
+       lyxerr << "behind_id: " << behind_id << "\n";
+       lyxerr << "inset_id: " << inset_id << "\n";
+
        // Set the right(new) inset-owner of the paragraph if there is any.
        if (!undo.pars.empty()) {
                Inset * in = 0;
-               if (before != end)
+               if (before != null)
                        in = before->inInset();
-               else if (undo.number_of_inset_id >= 0)
-                       in = bv->buffer()->getInsetFromID(undo.number_of_inset_id);
+               else if (inset_id >= 0)
+                       in = bv->buffer()->getInsetFromID(inset_id);
                for (size_t i = 0, n = undo.pars.size(); i < n; ++i)
                        undo.pars[i]->setInsetOwner(in);
        }
 
-       // Replace the paragraphs with the undo informations.
-       vector<Paragraph *> deletelist;
 
-       // Now add old paragraphs to be deleted.
-       if (before != behind || (behind == end && before == end)) {
-               ParagraphList::iterator deletepar;
-               if (before != end) {
-                       deletepar = *before;
-                       ++deletepar;
-               } else {
-                       deletepar = undoParagraphs(bv, undo.number_of_inset_id).begin();
-               }
-               // this surprisingly fills the undo! (Andre')
-               size_t par = 0;
-               //while (deletepar && deletepar != *behind)
-               while (deletepar != *behind) {
-                       deletelist.push_back(&*deletepar);
-                       ++deletepar;
+       // quick hack to make the common case work
+       if (undo.pars.size() == 1 && boost::next(first) == after) {
+       //      first = *undo.pars[0];
+               lyxerr << "could use special case...\n";
+       }
+
+#if 0
+       // remove stuff between first and after
+       plist->erase(first, after);
+       // re-create first
+       if (before == null) {
+               // if there's no before take the beginning of parlist.
+               first = plist->begin();
+       } else {
+               first = *before;
+               ++first;
+       }
+
+#endif
 
+       // inset saved paragraphs
+       for (size_t i = 0, n = undo.pars.size(); i < n; ++i) {
+               lyxerr << " inserting par " << undo.pars[i]->id() << "\n";
+               lyxerr << " inserting plist: " << plist << "\n";
+               //plist->insert(first, new Paragraph(*undo.pars[i], true));
+               /*
                        // A memory optimization for edit:
                        // Only layout information
                        // is stored in the undo. So restore
@@ -136,62 +166,12 @@ bool textHandleUndo(BufferView * bv, Undo & undo)
                                undo.pars[par]->setContentsFromPar(*deletelist.back());
                                ++par;
                        }
-               }
-       }
-
-       // The order here is VERY IMPORTANT. We have to set the right
-       // 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.
-       if (!undo.pars.empty()) {
-#warning FIXME
-               //undo.pars.back()->next(&**behind);
-               //if (behind != end)
-               //(&**behind)->previous(undo.pars.back());
-       }
-
-       // Put the new stuff in the list if there is one.
-       Paragraph * undopar = undo.pars.empty() ? 0 : undo.pars.front();
-       if (!undo.pars.empty()) {
-#warning FIXME
-               //undo.pars.front()->previous(&**before);
-               if (before != end) {
-#warning FIXME
-                       //(&**before)->next(undopar);
-               } else {
-                       int id = undoParagraphs(bv, undo.number_of_inset_id).front().id();
-                       ParIterator op = bv->buffer()->getParFromID(id);
-                       if (op != end && op->inInset()) {
-#warning FIXME reimplementaion needed here
-                               //static_cast<InsetText*>(op->inInset())->paragraph(undopar);
-                       } else {
-#warning FIXME reimplementation needed here
-                               //bv->buffer()->paragraphs.set(undopar);
-                       }
-               }
-       } 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.
-               if (before == end && behind != end) {
-                       int id = undoParagraphs(bv, undo.number_of_inset_id).front().id();
-                       ParIterator op = bv->buffer()->getParFromID(id);
-                       if (op != end && op->inInset()) {
-#warning FIXME reimplementation needed here
-                               //static_cast<InsetText*>(op->inInset())->paragraph(&**behind);
-                       } else {
-#warning FIXME reimplementation needed here
-                               //bv->buffer()->paragraphs.set(&**behind);
-                       }
-                       undopar = &**behind;
-               }
+               */
        }
-
-
-       // Set the cursor for redoing.
-       // If we have a par before the undopar.
-       if (before != end) {
+       
+       // Set the cursor for redoing
+       // if we have a par before the first.
+       if (before != null) {
                Inset * it = before->inInset();
                if (it)
                        it->getLyXText(bv)->setCursorIntern(*before, 0);
@@ -199,37 +179,17 @@ bool textHandleUndo(BufferView * bv, Undo & undo)
                        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
-       else { // otherwise this is the first one and we start here
-               Inset * it = undopar->inInset();
-               if (it)
-                       it->getLyXText(bv)->setCursorIntern(bv, undopar, 0);
-               else
-                       bv->text->setCursorIntern(bv, undopar, 0);
-       }
-#endif
-
        UpdatableInset * it = 0;
-       if (undopar)
-               it = static_cast<UpdatableInset*>(undopar->inInset());
+       if (first != plist->begin())
+               it = static_cast<UpdatableInset*>(first->inInset());
 
        LyXText * text = it ? it->getLyXText(bv) : bv->text;
 
-       ParagraphList::iterator endpar = text->ownerParagraphs().end();
-
-       // Calculate the endpar for redoing the paragraphs.
-       if (behind != end) {
-               endpar = *behind;
-               ++endpar;
-       }
+       text->redoParagraphs(text->cursor, plist->end());
 
-       text->redoParagraphs(text->cursor, endpar);
-       ParIterator tmppar =
-               bv->buffer()->getParFromID(undo.number_of_cursor_par);
+       ParIterator tmppar = bv->buffer()->getParFromID(inset_id);
 
-       if (tmppar != end) {
+       if (tmppar != null) {
                LyXText * t;
                Inset * it = tmppar->inInset();
                if (it) {
@@ -254,47 +214,67 @@ bool textHandleUndo(BufferView * bv, Undo & undo)
                                          bv->text->cursor.pos());
        }
 
-       // And here it's safe enough to delete all removed paragraphs.
-       vector<Paragraph *>::iterator pit = deletelist.begin();
-       for(; pit != deletelist.end(); ++pit) {
-#warning FIXME
-               //(*pit)->previous(0);
-               //(*pit)->next(0);
-               delete (*pit);
-       }
-
-       // Otherwise the undo destructor would delete the paragraphs
-       undo.pars.resize(0);
 
        finishUndo();
        bv->text->postPaint(0);
+
        return true;
 }
 
 
 bool createUndo(BufferView * bv, Undo::undo_kind kind,
-       ParagraphList::iterator itfirst, ParagraphList::iterator itbehind,
+       ParagraphList::iterator itfirst, ParagraphList::iterator itlast,
        shared_ptr<Undo> & u)
 {
-       Paragraph * const first = &*itfirst;
-       Paragraph * const behind = &*itbehind;
-       lyx::Assert(first);
-
-       int before_number = -1;
-       int behind_number = -1;
-       int inset_id = -1;
-
-#warning FIXME
-       //if (first->previous())
-       //      before_number = first->previous()->id();
-       if (behind)
-               behind_number = behind->id();
-       if (first->inInset())
-               inset_id = first->inInset()->id();
-
        Buffer * b = bv->buffer();
 
-       // Undo::EDIT  and Undo::FINISH are
+       ParIterator null    = b->par_iterator_end();
+       ParIterator prev    = null;
+       ParIterator before  = null;
+       ParIterator first   = null;
+       ParIterator last    = null;
+       ParIterator behind  = null;
+
+       int const first_id  = itfirst->id();
+       int const last_id   = itlast->id();
+
+       for (ParIterator it = b->par_iterator_begin(); it != null; ++it) {
+               if ((*it)->id() == first_id) {
+                       first = it;
+                       before = prev;
+               }
+               if ((*it)->id() == last_id) {
+                       last = it;
+                       behind = last;
+                       ++behind;
+               }
+               prev = it;
+       }
+
+       if (last == null)
+               last = first;
+
+       int const before_id = (before == null) ? -1 : before->id();
+       int const behind_id = (behind == null) ? -1 : behind->id();
+       int inset_id        = (first->inInset()) ? first->inInset()->id() : -1;
+
+       lyxerr << "\nbefore_id: " << before_id << "\n";
+       lyxerr << "first_id:  " << first_id  << "\n";
+       lyxerr << "last_id:   " << last_id   << "\n";
+       lyxerr << "behind_id: " << behind_id << "\n";
+       lyxerr << "inset_id:  " << inset_id  << "\n";
+
+       ParagraphList * plist = 0;
+       if (first != null)
+               plist = &first.plist();
+       else if (behind != null)
+               plist = &behind.plist();
+       else if (!plist) {
+               lyxerr << "plist from buffer (should this happen?)\n";
+               plist = &b->paragraphs;
+       }
+
+       // 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
@@ -305,8 +285,8 @@ bool createUndo(BufferView * bv, Undo::undo_kind kind,
                // 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) {
+                   b->undostack.top()->number_of_before_par == before_id &&
+                   b->undostack.top()->number_of_behind_par == behind_id) {
                        // No undo needed.
                        return false;
                }
@@ -315,49 +295,22 @@ bool createUndo(BufferView * bv, Undo::undo_kind kind,
        // Create a new Undo.
        std::vector<Paragraph *> undo_pars;
 
-       Paragraph const * end = 0;
-
-       if (behind) {
-#warning FIXME
-               //end = behind->previous();
-       }else {
-               end = first;
-#warning FIXME
-               //while (end->next())
-               //      end = end->next();
-       }
-
-#warning FIXME
-//     if (first && end && (first != end->next()) &&
-//         ((before_number != behind_number) ||
-//              ((before_number < 0) && (behind_number < 0))))
-//     {
-//             undo_pars.push_back(new Paragraph(*first, true));
-//             for (Paragraph * tmppar = first; tmppar != end && tmppar->next(); ) {
-//                     tmppar = tmppar->next();
-//                     undo_pars.push_back(new Paragraph(*tmppar, true));
-//                     size_t const n = undo_pars.size();
-//                     undo_pars[n - 2]->next(undo_pars[n - 1]);
-//                     undo_pars[n - 1]->previous(undo_pars[n - 2]);
-//             }
-//             undo_pars.back()->next(0);
-//     }
+       for (ParagraphList::iterator it = *first; it != *last; ++it) 
+               undo_pars.push_back(new Paragraph(*it, true));
+       undo_pars.push_back(new Paragraph(**last, true));
 
        // A memory optimization: Just store the layout
        // information when only edit.
-       if (kind == Undo::EDIT) {
-               for (size_t i = 0, n = undo_pars.size(); i < n; ++i)
-                       undo_pars[i]->clearContents();
-       }
+#warning Waste...
+       //if (kind == Undo::EDIT)
+       //      for (size_t i = 0, n = undo_pars.size(); i < n; ++i)
+       //              undo_pars[i]->clearContents();
 
        int cursor_par = undoCursor(bv).par()->id();
        int cursor_pos = undoCursor(bv).pos();
 
-       //lyxerr << "createUndo: inset_id: " << inset_id << "  before_number: "
-       //      << before_number << "  behind_number: " << behind_number << "\n";
        u.reset(new Undo(kind, inset_id,
-               before_number, behind_number,
-               cursor_par, cursor_pos, undo_pars));
+               before_id, behind_id, cursor_par, cursor_pos, undo_pars));
 
        undo_finished = false;
        return true;
@@ -392,7 +345,7 @@ bool textUndoOrRedo(BufferView * bv,
                        if (first->next())
                                first = first->next();
                } else
-                       first = undoParagraphs(bv, undo->number_of_inset_id).begin();
+                       first = undoParagraphs(bv, undo->number_of_inset_id)->begin();
                if (first) {
                        shared_ptr<Undo> u;
                        ParIterator behind = b->getParFromID(undo->number_of_behind_par);
@@ -452,28 +405,27 @@ bool textRedo(BufferView * bv)
 
 
 void setUndo(BufferView * bv, Undo::undo_kind kind,
-            ParagraphList::iterator first, ParagraphList::iterator behind)
+            ParagraphList::iterator first)
+{
+       setUndo(bv, kind, first, first);
+}
+
+
+void setUndo(BufferView * bv, Undo::undo_kind kind,
+            ParagraphList::iterator first, ParagraphList::iterator last)
 {
+#warning DISABLED
+       //return;
        if (!undo_frozen) {
                shared_ptr<Undo> u;
-               if (createUndo(bv, kind, first, behind, u))
+               if (createUndo(bv, kind, first, last, u))
                        bv->buffer()->undostack.push(u);
                bv->buffer()->redostack.clear();
        }
 }
 
 
-void setRedo(BufferView * bv, Undo::undo_kind kind,
-            ParagraphList::iterator first, ParagraphList::iterator behind)
-{
-       shared_ptr<Undo> u;
-       if (createUndo(bv, kind, first, behind, u))
-               bv->buffer()->redostack.push(u);
-}
-
-
 void setCursorParUndo(BufferView * bv)
 {
-       setUndo(bv, Undo::FINISH, bv->text->cursor.par(),
-               boost::next(bv->text->cursor.par()));
+       setUndo(bv, Undo::FINISH, bv->text->cursor.par());
 }