]> git.lyx.org Git - lyx.git/blobdiff - src/undo_funcs.C
don't rm emergency saves ever
[lyx.git] / src / undo_funcs.C
index 44154e431d980521d7f6f1b7acf0f2e959e60ac3..63cbe37fc91a8a3794116fa191c76df248e8472e 100644 (file)
@@ -17,7 +17,6 @@
 #include "insets/insettext.h"
 #include "debug.h"
 #include "support/LAssert.h"
-
 #include "iterators.h"
 
 #include <vector>
@@ -47,15 +46,15 @@ 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.
  */
-Paragraph * firstUndoParagraph(BufferView * bv, int inset_id)
+ParagraphList undoParagraphs(BufferView * bv, int inset_id)
 {
        Inset * inset = bv->buffer()->getInsetFromID(inset_id);
        if (inset) {
-               Paragraph * result = inset->getFirstParagraph(0);
-               if (result)
-                       return result;
+               ParagraphList * result = inset->getParagraphs(0);
+               if (result && !result->empty())
+                       return *result;
        }
-       return &*bv->text->ownerParagraphs().begin();
+       return bv->text->ownerParagraphs();
 }
 
 
@@ -94,35 +93,21 @@ bool textHandleUndo(BufferView * bv, Undo & undo)
                                num = -1;
                        }
                }
-               t->setCursorIntern(firstUndoParagraph(bv, num), 0);
+               t->setCursorIntern(undoParagraphs(bv, num).begin(), 0);
        }
 
-       // Replace the paragraphs with the undo informations.
-
-       Paragraph * undopar = undo.pars.empty() ? 0 : undo.pars[0];
-       // Otherwise the undo destructor would
-       // delete the paragraph.
-       undo.pars.resize(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) {
+       // Set the right(new) inset-owner of the paragraph if there is any. 
+       if (!undo.pars.empty()) {
                Inset * in = 0;
                if (before)
                        in = before->inInset();
                else if (undo.number_of_inset_id >= 0)
                        in = bv->buffer()->getInsetFromID(undo.number_of_inset_id);
-               lastundopar->setInsetOwner(in);
-               while (lastundopar->next()) {
-                       lastundopar = lastundopar->next();
-                       lastundopar->setInsetOwner(in);
-               }
+               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.
@@ -131,11 +116,11 @@ bool textHandleUndo(BufferView * bv, Undo & undo)
                if (before)
                        deletepar = before->next();
                else
-                       deletepar = firstUndoParagraph(bv, undo.number_of_inset_id);
-               Paragraph * tmppar2 = undopar;
+                       deletepar = &undoParagraphs(bv, undo.number_of_inset_id).front();
+               // this surprisingly fills the undo! (Andre')
+               size_t par = 0;
                while (deletepar && deletepar != behind) {
                        deletelist.push_back(deletepar);
-                       Paragraph * tmppar = deletepar;
                        deletepar = deletepar->next();
 
                        // A memory optimization for edit:
@@ -143,8 +128,8 @@ bool textHandleUndo(BufferView * bv, Undo & undo)
                        // is stored in the undo. So restore
                        // the text informations.
                        if (undo.kind == Undo::EDIT) {
-                               tmppar2->setContentsFromPar(*tmppar);
-                               tmppar2 = tmppar2->next();
+                               undo.pars[par]->setContentsFromPar(*deletelist.back());
+                               ++par;
                        }
                }
        }
@@ -154,19 +139,20 @@ bool textHandleUndo(BufferView * bv, Undo & undo)
        // the LyXText works!!!
 
        // Thread the end of the undo onto the par in front if any.
-       if (lastundopar) {
-               lastundopar->next(behind);
+       if (!undo.pars.empty()) {
+               undo.pars.back()->next(behind);
                if (behind)
-                       behind->previous(lastundopar);
+                       behind->previous(undo.pars.back());
        }
 
        // Put the new stuff in the list if there is one.
-       if (undopar) {
-               undopar->previous(before);
+       Paragraph * undopar = undo.pars.empty() ? 0 : undo.pars.front();
+       if (!undo.pars.empty()) {
+               undo.pars.front()->previous(before);
                if (before)
                        before->next(undopar);
                else {
-                       int id = firstUndoParagraph(bv, undo.number_of_inset_id)->id();
+                       int id = undoParagraphs(bv, undo.number_of_inset_id).front().id();
                        Paragraph * op = &*bv->buffer()->getParFromID(id);
                        if (op && op->inInset()) {
                                static_cast<InsetText*>(op->inInset())->paragraph(undopar);
@@ -179,14 +165,13 @@ bool textHandleUndo(BufferView * bv, Undo & undo)
                // 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();
+                       int id = undoParagraphs(bv, undo.number_of_inset_id).front().id();
                        Paragraph * op = &*bv->buffer()->getParFromID(id);
                        if (op && op->inInset()) {
                                static_cast<InsetText*>(op->inInset())->paragraph(behind);
                        } else {
                                bv->buffer()->paragraphs.set(behind);
                        }
-
                        undopar = behind;
                }
        }
@@ -279,6 +264,9 @@ bool textHandleUndo(BufferView * bv, Undo & undo)
                delete (*pit);
        }
 
+       // Otherwise the undo destructor would delete the paragraphs
+       undo.pars.resize(0);
+
        finishUndo();
        bv->text->postPaint(0);
        return true;
@@ -289,8 +277,8 @@ bool createUndo(BufferView * bv, Undo::undo_kind kind,
        ParagraphList::iterator itfirst, ParagraphList::iterator itbehind,
        shared_ptr<Undo> & u)
 {
-       Paragraph * first = &*itfirst;
-       Paragraph * behind = &*itbehind;
+       Paragraph * const first = &*itfirst;
+       Paragraph * const behind = &*itbehind;
        lyx::Assert(first);
 
        int before_number = -1;
@@ -327,24 +315,22 @@ bool createUndo(BufferView * bv, Undo::undo_kind kind,
        // Create a new Undo.
        std::vector<Paragraph *> undo_pars;
 
-       Paragraph * start = first;
-       Paragraph * end = 0;
+       Paragraph const * end = 0;
 
        if (behind)
-               end = const_cast<Paragraph*>(behind->previous());
+               end = behind->previous();
        else {
-               end = start;
+               end = first;
                while (end->next())
                        end = end->next();
        }
-       if (start && end && (start != end->next()) &&
+
+       if (first && end && (first != end->next()) &&
            ((before_number != behind_number) ||
                 ((before_number < 0) && (behind_number < 0))))
        {
-               Paragraph * tmppar = start;
-               undo_pars.push_back(new Paragraph(*tmppar, true));
-
-               while (tmppar != end && tmppar->next()) {
+               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();
@@ -364,6 +350,8 @@ bool createUndo(BufferView * bv, Undo::undo_kind kind,
        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));
@@ -394,7 +382,7 @@ bool textUndoOrRedo(BufferView * bv,
                if (first && first->next())
                        first = first->next();
                else if (!first)
-                       first = firstUndoParagraph(bv, undo->number_of_inset_id);
+                       first = &*undoParagraphs(bv, undo->number_of_inset_id).begin();
                if (first) {
                        shared_ptr<Undo> u;
                        if (createUndo(bv, undo->kind, first,