]> git.lyx.org Git - lyx.git/blobdiff - src/CutAndPaste.cpp
Correct the spelling of "occured" to "occurred"
[lyx.git] / src / CutAndPaste.cpp
index e7a17f17200eedce34dca0f2c9e4cc9ce562e7eb..6333892cd6cc6e2d1bfe6729a50657f46cc56fab 100644 (file)
@@ -15,6 +15,7 @@
 
 #include "CutAndPaste.h"
 
+#include "BranchList.h"
 #include "Buffer.h"
 #include "buffer_funcs.h"
 #include "BufferList.h"
 #include "BufferView.h"
 #include "Changes.h"
 #include "Cursor.h"
+#include "Encoding.h"
 #include "ErrorList.h"
 #include "FuncCode.h"
 #include "FuncRequest.h"
 #include "InsetIterator.h"
 #include "InsetList.h"
 #include "Language.h"
-#include "LyXFunc.h"
+#include "LyX.h"
 #include "LyXRC.h"
 #include "Text.h"
 #include "Paragraph.h"
-#include "paragraph_funcs.h"
 #include "ParagraphParameters.h"
 #include "ParIterator.h"
-#include "Undo.h"
+#include "TextClass.h"
 
-#include "insets/InsetFlex.h"
+#include "insets/InsetBibitem.h"
+#include "insets/InsetBranch.h"
 #include "insets/InsetCommand.h"
+#include "insets/InsetFlex.h"
 #include "insets/InsetGraphics.h"
 #include "insets/InsetGraphicsParams.h"
 #include "insets/InsetInclude.h"
+#include "insets/InsetLabel.h"
 #include "insets/InsetTabular.h"
 
 #include "mathed/MathData.h"
 #include "mathed/InsetMath.h"
+#include "mathed/InsetMathHull.h"
+#include "mathed/InsetMathRef.h"
 #include "mathed/MathSupport.h"
 
 #include "support/debug.h"
 #include "support/docstream.h"
 #include "support/gettext.h"
+#include "support/lassert.h"
 #include "support/limited_stack.h"
 #include "support/lstrings.h"
+#include "support/TempFile.h"
 
+#include "frontends/alert.h"
 #include "frontends/Clipboard.h"
 #include "frontends/Selection.h"
 
@@ -72,7 +81,7 @@ namespace {
 
 typedef pair<pit_type, int> PitPosPair;
 
-typedef limited_stack<pair<ParagraphList, DocumentClass const *> > CutStack;
+typedef limited_stack<pair<ParagraphList, DocumentClassConstPtr> > CutStack;
 
 CutStack theCuts(10);
 // persistent selection, cleared until the next selection
@@ -90,38 +99,49 @@ bool checkPastePossible(int index)
 }
 
 
-pair<PitPosPair, pit_type>
-pasteSelectionHelper(Cursor & cur, ParagraphList const & parlist,
-                    DocumentClass const * const oldDocClass, ErrorList & errorlist)
+struct PasteReturnValue {
+       PasteReturnValue(pit_type r_par, pos_type r_pos, bool r_nu) :
+         par(r_par), pos(r_pos), needupdate(r_nu)
+       {}
+
+       pit_type par;
+       pos_type pos;
+       bool needupdate;
+};
+
+PasteReturnValue
+pasteSelectionHelper(DocIterator const & cur, ParagraphList const & parlist,
+                     DocumentClassConstPtr oldDocClass, Buffer * tmpbuffer,
+                     ErrorList & errorlist)
 {
        Buffer const & buffer = *cur.buffer();
        pit_type pit = cur.pit();
        pos_type pos = cur.pos();
+       bool need_update = false;
+
+       if (parlist.empty())
+               return PasteReturnValue(pit, pos, need_update);
+
        InsetText * target_inset = cur.inset().asInsetText();
        if (!target_inset) {
                InsetTabular * it = cur.inset().asInsetTabular();
-               target_inset = it? it->cell(cur.idx())->asInsetText() : 0;
+               target_inset = it ? it->cell(cur.idx())->asInsetText() : 0;
        }
-       LASSERT(target_inset, return make_pair(PitPosPair(pit, pos), pit));
-       ParagraphList & pars = target_inset->paragraphs();
+       LASSERT(target_inset, return PasteReturnValue(pit, pos, need_update));
 
-       if (parlist.empty())
-               return make_pair(PitPosPair(pit, pos), pit);
-
-       BOOST_ASSERT (pos <= pars[pit].size());
+       ParagraphList & pars = target_inset->paragraphs();
+       LASSERT(pos <= pars[pit].size(),
+                       return PasteReturnValue(pit, pos, need_update));
 
        // Make a copy of the CaP paragraphs.
        ParagraphList insertion = parlist;
-       DocumentClass const * const newDocClass = 
-               buffer.params().documentClassPtr();
 
        // Now remove all out of the pars which is NOT allowed in the
        // new environment and set also another font if that is required.
 
-       // Convert newline to paragraph break in ERT inset.
-       // This should not be here!
-       InsetCode const code = target_inset->lyxCode();
-       if (code == ERT_CODE || code == LISTINGS_CODE) {
+       // Convert newline to paragraph break in ParbreakIsNewline
+       if (target_inset->getLayout().parbreakIsNewline()
+           || pars[pit].layout().parbreak_is_newline) {
                for (size_t i = 0; i != insertion.size(); ++i) {
                        for (pos_type j = 0; j != insertion[i].size(); ++j) {
                                if (insertion[i].isNewline(j)) {
@@ -138,6 +158,7 @@ pasteSelectionHelper(Cursor & cur, ParagraphList const & parlist,
        }
 
        // set the paragraphs to plain layout if necessary
+       DocumentClassConstPtr newDocClass = buffer.params().documentClassPtr();
        if (cur.inset().usePlainLayout()) {
                bool forcePlainLayout = cur.inset().forcePlainLayout();
                Layout const & plainLayout = newDocClass->plainLayout();
@@ -149,7 +170,8 @@ pasteSelectionHelper(Cursor & cur, ParagraphList const & parlist,
                        if (forcePlainLayout || parLayout == defaultLayout)
                                par->setLayout(plainLayout);
                }
-       } else { // check if we need to reset from plain layout
+       } else {
+               // check if we need to reset from plain layout
                Layout const & defaultLayout = newDocClass->defaultLayout();
                Layout const & plainLayout = newDocClass->plainLayout();
                ParagraphList::iterator const end = insertion.end();
@@ -161,7 +183,7 @@ pasteSelectionHelper(Cursor & cur, ParagraphList const & parlist,
                }
        }
 
-       InsetText in(buffer);
+       InsetText in(cur.buffer());
        // Make sure there is no class difference.
        in.paragraphs().clear();
        // This works without copying any paragraph data because we have
@@ -191,10 +213,8 @@ pasteSelectionHelper(Cursor & cur, ParagraphList const & parlist,
                if (tmpbuf->params().depth() > max_depth)
                        tmpbuf->params().depth(max_depth);
 
-               // Only set this from the 2nd on as the 2nd depends
-               // for maxDepth still on pit.
-               if (tmpbuf != insertion.begin())
-                       max_depth = tmpbuf->getMaxDepthAfter();
+               // Set max_depth for the next paragraph
+               max_depth = tmpbuf->getMaxDepthAfter();
 
                // Set the inset owner of this paragraph.
                tmpbuf->setInsetOwner(target_inset);
@@ -205,7 +225,7 @@ pasteSelectionHelper(Cursor & cur, ParagraphList const & parlist,
                                        tmpbuf->eraseChar(i--, false);
                }
 
-               tmpbuf->setChange(Change(buffer.params().trackChanges ?
+               tmpbuf->setChange(Change(buffer.params().track_changes ?
                                         Change::INSERTED : Change::UNCHANGED));
        }
 
@@ -221,22 +241,72 @@ pasteSelectionHelper(Cursor & cur, ParagraphList const & parlist,
 
        InsetIterator const i_end = inset_iterator_end(in);
        for (InsetIterator it = inset_iterator_begin(in); it != i_end; ++it) {
+               // Even though this will also be done later, it has to be done here 
+               // since some inset might going to try to access
+               // the buffer() member.
+               it->setBuffer(const_cast<Buffer &>(buffer));
                switch (it->lyxCode()) {
+
+               case MATH_HULL_CODE: {
+                       // check for equation labels and resolve duplicates
+                       InsetMathHull * ins = it->asInsetMath()->asHullInset();
+                       std::vector<InsetLabel *> labels = ins->getLabels();
+                       for (size_t i = 0; i != labels.size(); ++i) {
+                               if (!labels[i])
+                                       continue;
+                               InsetLabel * lab = labels[i];
+                               docstring const oldname = lab->getParam("name");
+                               lab->updateLabel(oldname);
+                               // We need to update the buffer reference cache.
+                               need_update = true;
+                               docstring const newname = lab->getParam("name");
+                               if (oldname == newname)
+                                       continue;
+                               // adapt the references
+                               for (InsetIterator itt = inset_iterator_begin(in);
+                                     itt != i_end; ++itt) {
+                                       if (itt->lyxCode() == REF_CODE) {
+                                               InsetCommand * ref = itt->asInsetCommand();
+                                               if (ref->getParam("reference") == oldname)
+                                                       ref->setParam("reference", newname);
+                                       } else if (itt->lyxCode() == MATH_REF_CODE) {
+                                               InsetMathRef * mi = itt->asInsetMath()->asRefInset();
+                                               // this is necessary to prevent an uninitialized
+                                               // buffer when the RefInset is in a MathBox.
+                                               // FIXME audit setBuffer calls
+                                               mi->setBuffer(const_cast<Buffer &>(buffer));
+                                               if (mi->getTarget() == oldname)
+                                                       mi->changeTarget(newname);
+                                       }
+                               }
+                       }
+                       break;
+               }
+
                case LABEL_CODE: {
                        // check for duplicates
-                       InsetCommand & lab = static_cast<InsetCommand &>(*it);
+                       InsetLabel & lab = static_cast<InsetLabel &>(*it);
                        docstring const oldname = lab.getParam("name");
-                       lab.updateCommand(oldname, false);
+                       lab.updateLabel(oldname);
+                       // We need to update the buffer reference cache.
+                       need_update = true;
                        docstring const newname = lab.getParam("name");
-                       if (oldname != newname) {
-                               // adapt the references
-                               for (InsetIterator itt = inset_iterator_begin(in); itt != i_end; ++itt) {
-                                       if (itt->lyxCode() == REF_CODE) {
-                                               InsetCommand & ref = dynamic_cast<InsetCommand &>(*itt);
-                                               if (ref.getParam("reference") == oldname)
-                                                       ref.setParam("reference", newname);
-                                       }
+                       if (oldname == newname)
+                               break;
+                       // adapt the references
+                       for (InsetIterator itt = inset_iterator_begin(in); itt != i_end; ++itt) {
+                               if (itt->lyxCode() == REF_CODE) {
+                                       InsetCommand & ref = static_cast<InsetCommand &>(*itt);
+                                       if (ref.getParam("reference") == oldname)
+                                               ref.setParam("reference", newname);
+                               } else if (itt->lyxCode() == MATH_REF_CODE) {
+                                       InsetMathRef * mi = itt->asInsetMath()->asRefInset();
+                                       // this is necessary to prevent an uninitialized
+                                       // buffer when the RefInset is in a MathBox.
+                                       // FIXME audit setBuffer calls
+                                       mi->setBuffer(const_cast<Buffer &>(buffer));
+                                       if (mi->getTarget() == oldname)
+                                               mi->changeTarget(newname);
                                }
                        }
                        break;
@@ -245,28 +315,66 @@ pasteSelectionHelper(Cursor & cur, ParagraphList const & parlist,
                case INCLUDE_CODE: {
                        InsetInclude & inc = static_cast<InsetInclude &>(*it);
                        inc.updateCommand();
+                       // We need to update the list of included files.
+                       need_update = true;
                        break;
                }
 
                case BIBITEM_CODE: {
                        // check for duplicates
-                       InsetCommand & bib = static_cast<InsetCommand &>(*it);
+                       InsetBibitem & bib = static_cast<InsetBibitem &>(*it);
                        docstring const oldkey = bib.getParam("key");
                        bib.updateCommand(oldkey, false);
+                       // We need to update the buffer reference cache.
+                       need_update = true;
                        docstring const newkey = bib.getParam("key");
-                       if (oldkey != newkey) {
-                               // adapt the references
-                               for (InsetIterator itt = inset_iterator_begin(in); itt != i_end; ++itt) {
-                                       if (itt->lyxCode() == CITE_CODE) {
-                                               InsetCommand & ref = dynamic_cast<InsetCommand &>(*itt);
-                                               if (ref.getParam("key") == oldkey)
-                                                       ref.setParam("key", newkey);
-                                       }
+                       if (oldkey == newkey)
+                               break;
+                       // adapt the references
+                       for (InsetIterator itt = inset_iterator_begin(in);
+                            itt != i_end; ++itt) {
+                               if (itt->lyxCode() == CITE_CODE) {
+                                       InsetCommand * ref = itt->asInsetCommand();
+                                       if (ref->getParam("key") == oldkey)
+                                               ref->setParam("key", newkey);
                                }
                        }
                        break;
                }
 
+               case BRANCH_CODE: {
+                       // check if branch is known to target buffer
+                       // or its master
+                       InsetBranch & br = static_cast<InsetBranch &>(*it);
+                       docstring const name = br.branch();
+                       if (name.empty())
+                               break;
+                       bool const is_child = (&buffer != buffer.masterBuffer());
+                       BranchList branchlist = buffer.params().branchlist();
+                       if ((!is_child && branchlist.find(name))
+                           || (is_child && (branchlist.find(name)
+                               || buffer.masterBuffer()->params().branchlist().find(name))))
+                               break;
+                       if (tmpbuffer) {
+                               // This is for a temporary buffer, so simply create the branch.
+                               // Must not use lyx::dispatch(), since tmpbuffer has no view.
+                               DispatchResult dr;
+                               tmpbuffer->dispatch(FuncRequest(LFUN_BRANCH_ADD, name), dr);
+                       } else {
+                               docstring text = bformat(
+                                       _("The pasted branch \"%1$s\" is undefined.\n"
+                                         "Do you want to add it to the document's branch list?"),
+                                       name);
+                               if (frontend::Alert::prompt(_("Unknown branch"),
+                                         text, 0, 1, _("&Add"), _("&Don't Add")) != 0)
+                                       break;
+                               lyx::dispatch(FuncRequest(LFUN_BRANCH_ADD, name));
+                       }
+                       // We need to update the list of branches.
+                       need_update = true;
+                       break;
+               }
+
                default:
                        break; // nothing
                }
@@ -301,7 +409,7 @@ pasteSelectionHelper(Cursor & cur, ParagraphList const & parlist,
        pit = last_paste;
        pos = pars[last_paste].size();
 
-       // FIXME Should we do it here, or should we let updateLabels() do it?
+       // FIXME Should we do it here, or should we let updateBuffer() do it?
        // Set paragraph buffers. It's important to do this right away
        // before something calls Inset::buffer() and causes a crash.
        for (pit_type p = startpit; p <= pit; ++p)
@@ -319,12 +427,12 @@ pasteSelectionHelper(Cursor & cur, ParagraphList const & parlist,
                        pars[last_paste].makeSameLayout(pars[last_paste + 1]);
                        mergeParagraph(buffer.params(), pars, last_paste);
                } else {
-                       pars[last_paste + 1].stripLeadingSpaces(buffer.params().trackChanges);
+                       pars[last_paste + 1].stripLeadingSpaces(buffer.params().track_changes);
                        ++last_paste;
                }
        }
 
-       return make_pair(PitPosPair(pit, pos), last_paste + 1);
+       return PasteReturnValue(pit, pos, need_update);
 }
 
 
@@ -340,17 +448,17 @@ PitPosPair eraseSelectionHelper(BufferParams const & params,
 
        // Start and end is inside same paragraph
        if (endpit == pit_type(pars.size()) || startpit == endpit) {
-               endpos -= pars[startpit].eraseChars(startpos, endpos, params.trackChanges);
+               endpos -= pars[startpit].eraseChars(startpos, endpos, params.track_changes);
                return PitPosPair(endpit, endpos);
        }
 
        for (pit_type pit = startpit; pit != endpit + 1;) {
                pos_type const left  = (pit == startpit ? startpos : 0);
                pos_type right = (pit == endpit ? endpos : pars[pit].size() + 1);
-               bool const merge = pars[pit].isMergedOnEndOfParDeletion(params.trackChanges);
+               bool const merge = pars[pit].isMergedOnEndOfParDeletion(params.track_changes);
 
                // Logically erase only, including the end-of-paragraph character
-               pars[pit].eraseChars(left, right, params.trackChanges);
+               pars[pit].eraseChars(left, right, params.track_changes);
 
                // Separate handling of paragraph break:
                if (merge && pit != endpit &&
@@ -372,39 +480,123 @@ PitPosPair eraseSelectionHelper(BufferParams const & params,
 }
 
 
-void putClipboard(ParagraphList const & paragraphs, 
-       DocumentClass const * const docclass, docstring const & plaintext)
+Buffer * copyToTempBuffer(ParagraphList const & paragraphs, DocumentClassConstPtr docclass)
 {
-       // For some strange reason gcc 3.2 and 3.3 do not accept
-       // Buffer buffer(string(), false);
-       // This needs to be static to avoid a memory leak. When a Buffer is
-       // constructed, it constructs a BufferParams, which in turn constructs
-       // a DocumentClass, via new, that is never deleted. If we were to go to
-       // some kind of garbage collection there, or a shared_ptr, then this
-       // would not be needed.
-       static Buffer * buffer = theBufferList().newBuffer(
-               FileName::tempName().absFilename() + "_clipboard.internal");
-       buffer->setUnnamed(true);
-       buffer->paragraphs() = paragraphs;
-       buffer->inset().setBuffer(*buffer);
+       // This used to need to be static to avoid a memory leak. It no longer needs
+       // to be so, but the alternative is to construct a new one of these (with a
+       // new temporary directory, etc) every time, and then to destroy it. So maybe
+       // it's worth just keeping this one around.
+       // FIXME THREAD
+       static TempFile tempfile("clipboard.internal");
+       tempfile.setAutoRemove(false);
+       static Buffer * staticbuffer = theBufferList().newInternalBuffer(
+                       tempfile.name().absFileName());
+
+       // These two things only really need doing the first time.
+       staticbuffer->setUnnamed(true);
+       staticbuffer->inset().setBuffer(*staticbuffer);
+
+       // Use a clone for the complicated stuff so that we do not need to clean
+       // up in order to avoid a crash.
+       Buffer * buffer = staticbuffer->cloneBufferOnly();
+       LASSERT(buffer, return 0);
+
+       // This needs doing every time.
+       // Since setDocumentClass() causes deletion of the old document class
+       // we need to reset all layout pointers in paragraphs (otherwise they
+       // would be dangling).
+       ParIterator const end = buffer->par_iterator_end();
+       for (ParIterator it = buffer->par_iterator_begin(); it != end; ++it) {
+               docstring const name = it->layout().name();
+               if (docclass->hasLayout(name))
+                       it->setLayout((*docclass)[name]);
+               else
+                       it->setPlainOrDefaultLayout(*docclass);
+       }
        buffer->params().setDocumentClass(docclass);
-       ostringstream lyx;
-       if (buffer->write(lyx))
-               theClipboard().put(lyx.str(), plaintext);
-       else
-               theClipboard().put(string(), plaintext);
+
+       // we will use pasteSelectionHelper to copy the paragraphs into the
+       // temporary Buffer, since it does a lot of things to fix them up.
+       DocIterator dit = doc_iterator_begin(buffer, &buffer->inset());
+       ErrorList el;
+       pasteSelectionHelper(dit, paragraphs, docclass, buffer, el);
+
+       return buffer;
+}
+
+
+void putClipboard(ParagraphList const & paragraphs, 
+       DocumentClassConstPtr docclass, docstring const & plaintext)
+{
+       Buffer * buffer = copyToTempBuffer(paragraphs, docclass);
+       if (!buffer) // already asserted in copyToTempBuffer()
+               return;
+
+       // We don't want to produce images that are not used. Therefore,
+       // output formulas as MathML. Even if this is not understood by all
+       // applications, the number that can parse it should go up in the future.
+       buffer->params().html_math_output = BufferParams::MathML;
+
+       // Make sure MarkAsExporting is deleted before buffer is
+       {
+               // The Buffer is being used to export. This is necessary so that the
+               // updateMacros call will record the needed information.
+               MarkAsExporting mex(buffer);
+
+               buffer->updateBuffer(Buffer::UpdateMaster, OutputUpdate);
+               buffer->updateMacros();
+               buffer->updateMacroInstances(OutputUpdate);
+
+               // LyX's own format
+               string lyx;
+               ostringstream oslyx;
+               if (buffer->write(oslyx))
+                       lyx = oslyx.str();
+
+               // XHTML format
+               odocstringstream oshtml;
+               OutputParams runparams(encodings.fromLyXName("utf8"));
+               // We do not need to produce images, etc.
+               runparams.dryrun = true;
+               // We are not interested in errors (bug 8866)
+               runparams.silent = true;
+               buffer->writeLyXHTMLSource(oshtml, runparams, Buffer::FullSource);
+
+               theClipboard().put(lyx, oshtml.str(), plaintext);
+       }
+
        // Save that memory
-       buffer->paragraphs().clear();
+       delete buffer;
 }
 
 
-void copySelectionHelper(Buffer const & buf, ParagraphList const & pars,
+/// return true if the whole ParagraphList is deleted
+static bool isFullyDeleted(ParagraphList const & pars)
+{
+       pit_type const pars_size = static_cast<pit_type>(pars.size());
+
+       // check all paragraphs
+       for (pit_type pit = 0; pit < pars_size; ++pit) {
+               if (!pars[pit].empty())   // prevent assertion failure
+                       if (!pars[pit].isDeleted(0, pars[pit].size()))
+                               return false;
+       }
+       return true;
+}
+
+
+void copySelectionHelper(Buffer const & buf, Text const & text,
        pit_type startpit, pit_type endpit,
-       int start, int end, DocumentClass const * const dc, CutStack & cutstack)
+       int start, int end, DocumentClassConstPtr dc, CutStack & cutstack)
 {
-       LASSERT(0 <= start && start <= pars[startpit].size(), /**/);
-       LASSERT(0 <= end && end <= pars[endpit].size(), /**/);
-       LASSERT(startpit != endpit || start <= end, /**/);
+       ParagraphList const & pars = text.paragraphs();
+
+       // In most of these cases, we can try to recover.
+       LASSERT(0 <= start, start = 0);
+       LASSERT(start <= pars[startpit].size(), start = pars[startpit].size());
+       LASSERT(0 <= end, end = 0);
+       LASSERT(end <= pars[endpit].size(), end = pars[endpit].size());
+       LASSERT(startpit != endpit || start <= end, return);
 
        // Clone the paragraphs within the selection.
        ParagraphList copy_pars(boost::next(pars.begin(), startpit),
@@ -423,21 +615,37 @@ void copySelectionHelper(Buffer const & buf, ParagraphList const & pars,
        ParagraphList::iterator it = copy_pars.begin();
        ParagraphList::iterator it_end = copy_pars.end();
 
-       for (; it != it_end; it++) {
-               // ERT paragraphs have the Language latex_language.
-               // This is invalid outside of ERT, so we need to change it
-               // to the buffer language.
-               if (it->ownerCode() == ERT_CODE || it->ownerCode() == LISTINGS_CODE) {
-                       it->changeLanguage(buf.params(), latex_language, buf.language());
-               }
-               it->setInsetOwner(0);
+       for (; it != it_end; ++it) {
+               // Since we have a copy of the paragraphs, the insets
+               // do not have a proper buffer reference. It makes
+               // sense to add them temporarily, because the
+               // operations below depend on that (acceptChanges included).
+               it->setBuffer(const_cast<Buffer &>(buf));
+               // PassThru paragraphs have the Language
+               // latex_language. This is invalid for others, so we
+               // need to change it to the buffer language.
+               if (it->isPassThru())
+                       it->changeLanguage(buf.params(), 
+                                          latex_language, buf.language());
        }
 
-       // do not copy text (also nested in insets) which is marked as deleted
-       acceptChanges(copy_pars, buf.params());
+       // do not copy text (also nested in insets) which is marked as
+       // deleted, unless the whole selection was deleted
+       if (!isFullyDeleted(copy_pars))
+               acceptChanges(copy_pars, buf.params());
+       else
+               rejectChanges(copy_pars, buf.params());
+
 
-       DocumentClass * d = const_cast<DocumentClass *>(dc);
-       cutstack.push(make_pair(copy_pars, d));
+       // do some final cleanup now, to make sure that the paragraphs
+       // are not linked to something else.
+       it = copy_pars.begin();
+       for (; it != it_end; ++it) {
+               it->setBuffer(*static_cast<Buffer *>(0));
+               it->setInsetOwner(0);
+       }
+
+       cutstack.push(make_pair(copy_pars, dc));
 }
 
 } // namespace anon
@@ -512,12 +720,12 @@ bool multipleCellsSelected(Cursor const & cur)
 }
 
 
-void switchBetweenClasses(DocumentClass const * const oldone, 
-               DocumentClass const * const newone, InsetText & in, ErrorList & errorlist)
+void switchBetweenClasses(DocumentClassConstPtr oldone,
+               DocumentClassConstPtr newone, InsetText & in, ErrorList & errorlist)
 {
        errorlist.clear();
 
-       LASSERT(!in.paragraphs().empty(), /**/);
+       LBUFERR(!in.paragraphs().empty());
        if (oldone == newone)
                return;
        
@@ -525,13 +733,25 @@ void switchBetweenClasses(DocumentClass const * const oldone,
        DocumentClass const & newtc = *newone;
 
        // layouts
+       ParIterator it = par_iterator_begin(in);
        ParIterator end = par_iterator_end(in);
-       for (ParIterator it = par_iterator_begin(in); it != end; ++it) {
+       // for remembering which layouts we've had to add
+       set<docstring> newlayouts;
+       for (; it != end; ++it) {
                docstring const name = it->layout().name();
 
                // the pasted text will keep their own layout name. If this layout does
                // not exist in the new document, it will behave like a standard layout.
-               newtc.addLayoutIfNeeded(name);
+               bool const added_one = newtc.addLayoutIfNeeded(name);
+               if (added_one)
+                       newlayouts.insert(name);
+
+               if (added_one || newlayouts.find(name) != newlayouts.end()) {
+                       // Warn the user.
+                       docstring const s = bformat(_("Layout `%1$s' was not found."), name);
+                       errorlist.push_back(
+                               ErrorItem(_("Layout Not Found"), s, it->id(), 0, it->size()));
+               }
 
                if (in.usePlainLayout())
                        it->setLayout(newtc.plainLayout());
@@ -539,29 +759,42 @@ void switchBetweenClasses(DocumentClass const * const oldone,
                        it->setLayout(newtc[name]);
        }
 
-       // character styles
+       // character styles and hidden table cells
        InsetIterator const i_end = inset_iterator_end(in);
        for (InsetIterator it = inset_iterator_begin(in); it != i_end; ++it) {
-               InsetCollapsable * inset = it->asInsetCollapsable();
-               if (!inset)
-                       continue;
-               if (inset->lyxCode() != FLEX_CODE)
+               InsetCode const code = it->lyxCode();
+               if (code == FLEX_CODE) {
                        // FIXME: Should we verify all InsetCollapsable?
-                       continue;
-               inset->setLayout(newone);
-               if (!inset->undefined())
-                       continue;
-               // The flex inset is undefined in newtc
-               docstring const s = bformat(_(
-                       "Flex inset %1$s is "
-                       "undefined because of class "
-                       "conversion from\n%2$s to %3$s"),
-                       inset->name(), from_utf8(oldtc.name()),
-                       from_utf8(newtc.name()));
-               // To warn the user that something had to be done.
-               errorlist.push_back(ErrorItem(
-                               _("Undefined flex inset"),
-                               s, it.paragraph().id(), it.pos(), it.pos() + 1));
+                       docstring const layoutName = it->layoutName();
+                       docstring const & n = newone->insetLayout(layoutName).name();
+                       bool const is_undefined = n.empty() ||
+                               n == DocumentClass::plainInsetLayout().name();
+                       if (!is_undefined)
+                               continue;
+       
+                       // The flex inset is undefined in newtc
+                       docstring const oldname = from_utf8(oldtc.name());
+                       docstring const newname = from_utf8(newtc.name());
+                       docstring s;
+                       if (oldname == newname)
+                               s = bformat(_("Flex inset %1$s is undefined after "
+                                       "reloading `%2$s' layout."), layoutName, oldname);
+                       else
+                               s = bformat(_("Flex inset %1$s is undefined because of "
+                                       "conversion from `%2$s' layout to `%3$s'."),
+                                       layoutName, oldname, newname);
+                       // To warn the user that something had to be done.
+                       errorlist.push_back(ErrorItem(
+                                       _("Undefined flex inset"),
+                                       s, it.paragraph().id(), it.pos(), it.pos() + 1));
+               } else if (code == TABULAR_CODE) {
+                       // The recursion above does not catch paragraphs in "hidden" cells,
+                       // i.e., ones that are part of a multirow or multicolum. So we need
+                       // to handle those separately.
+                       // This is the cause of bug #9049.
+                       InsetTabular * table = it->asInsetTabular();
+                       table->setLayoutForHiddenCells(newtc);
+               }
        }
 }
 
@@ -617,7 +850,7 @@ void cutSelection(Cursor & cur, bool doclear, bool realcut)
 
        if (cur.inTexted()) {
                Text * text = cur.text();
-               LASSERT(text, /**/);
+               LBUFERR(text);
 
                saveSelection(cur);
 
@@ -631,7 +864,7 @@ void cutSelection(Cursor & cur, bool doclear, bool realcut)
                BufferParams const & bp = cur.buffer()->params();
                if (realcut) {
                        copySelectionHelper(*cur.buffer(),
-                               text->paragraphs(),
+                               *text,
                                begpit, endpit,
                                cur.selBegin().pos(), endpos,
                                bp.documentClassPtr(), theCuts);
@@ -642,7 +875,7 @@ void cutSelection(Cursor & cur, bool doclear, bool realcut)
                }
 
                if (begpit != endpit)
-                       cur.updateFlags(Update::Force | Update::FitCursor);
+                       cur.screenUpdateFlags(Update::Force | Update::FitCursor);
 
                boost::tie(endpit, endpos) =
                        eraseSelectionHelper(bp,
@@ -658,12 +891,17 @@ void cutSelection(Cursor & cur, bool doclear, bool realcut)
 
                // sometimes necessary
                if (doclear
-                       && text->paragraphs()[begpit].stripLeadingSpaces(bp.trackChanges))
+                       && text->paragraphs()[begpit].stripLeadingSpaces(bp.track_changes))
                        cur.fixIfBroken();
 
                // need a valid cursor. (Lgb)
                cur.clearSelection();
-               cur.buffer()->updateLabels();
+
+               // After a cut operation, we must make sure that the Buffer is updated
+               // because some further operation might need updated label information for
+               // example. So we cannot just use "cur.forceBufferUpdate()" here.
+               // This fixes #7071.
+               cur.buffer()->updateBuffer();
 
                // tell tabular that a recent copy happened
                dirtyTabularStack(false);
@@ -698,7 +936,8 @@ void copyInset(Cursor const & cur, Inset * inset, docstring const & plaintext)
        Paragraph par;
        BufferParams const & bp = cur.buffer()->params();
        par.setLayout(bp.documentClass().plainLayout());
-       par.insertInset(0, inset, Change(Change::UNCHANGED));
+       Font font(inherit_font, bp.language);
+       par.insertInset(0, inset, font, Change(Change::UNCHANGED));
        pars.push_back(par);
        theCuts.push(make_pair(pars, bp.documentClassPtr()));
 
@@ -706,6 +945,7 @@ void copyInset(Cursor const & cur, Inset * inset, docstring const & plaintext)
        putClipboard(theCuts[0].first, theCuts[0].second, plaintext);
 }
 
+
 namespace {
 
 void copySelectionToStack(Cursor const & cur, CutStack & cutstack)
@@ -720,7 +960,7 @@ void copySelectionToStack(Cursor const & cur, CutStack & cutstack)
 
        if (cur.inTexted()) {
                Text * text = cur.text();
-               LASSERT(text, /**/);
+               LBUFERR(text);
                // ok we have a selection. This is always between cur.selBegin()
                // and sel_end cursor
 
@@ -733,10 +973,14 @@ void copySelectionToStack(Cursor const & cur, CutStack & cutstack)
                       (par != cur.selEnd().pit() || pos < cur.selEnd().pos()))
                        ++pos;
 
-               copySelectionHelper(*cur.buffer(), pars, par, cur.selEnd().pit(),
+               copySelectionHelper(*cur.buffer(), *text, par, cur.selEnd().pit(),
                        pos, cur.selEnd().pos(), 
                        cur.buffer()->params().documentClassPtr(), cutstack);
-               dirtyTabularStack(false);
+
+               // Reset the dirty_tabular_stack_ flag only when something
+               // is copied to the clipboard (not to the selectionBuffer).
+               if (&cutstack == &theCuts)
+                       dirtyTabularStack(false);
        }
 
        if (cur.inMathed()) {
@@ -817,59 +1061,64 @@ void clearCutStack()
 }
 
 
-docstring selection(size_t sel_index)
+docstring selection(size_t sel_index, DocumentClassConstPtr docclass)
 {
-       return sel_index < theCuts.size()
-               ? theCuts[sel_index].first.back().asString(AS_STR_INSETS | AS_STR_NEWLINES)
-               : docstring();
+       if (sel_index >= theCuts.size())
+               return docstring();
+
+       boost::scoped_ptr<Buffer> buffer(copyToTempBuffer(theCuts[sel_index].first, docclass));
+       if (!buffer)
+               return docstring();
+
+       return buffer->paragraphs().back().asString(AS_STR_INSETS | AS_STR_NEWLINES);
 }
 
 
 void pasteParagraphList(Cursor & cur, ParagraphList const & parlist,
-                       DocumentClass const * const docclass, ErrorList & errorList)
+                       DocumentClassConstPtr docclass, ErrorList & errorList)
 {
        if (cur.inTexted()) {
                Text * text = cur.text();
-               LASSERT(text, /**/);
+               LBUFERR(text);
 
-               pit_type endpit;
-               PitPosPair ppp;
-
-               boost::tie(ppp, endpit) =
-                       pasteSelectionHelper(cur, parlist, docclass, errorList);
-               cur.buffer()->updateLabels();
+               PasteReturnValue prv =
+                       pasteSelectionHelper(cur, parlist, docclass, 0, errorList);
+               cur.forceBufferUpdate();
                cur.clearSelection();
-               text->setCursor(cur, ppp.first, ppp.second);
+               text->setCursor(cur, prv.par, prv.pos);
        }
 
        // mathed is handled in InsetMathNest/InsetMathGrid
-       LASSERT(!cur.inMathed(), /**/);
+       LATTEST(!cur.inMathed());
 }
 
 
-void pasteFromStack(Cursor & cur, ErrorList & errorList, size_t sel_index)
+bool pasteFromStack(Cursor & cur, ErrorList & errorList, size_t sel_index)
 {
        // this does not make sense, if there is nothing to paste
        if (!checkPastePossible(sel_index))
-               return;
+               return false;
 
        cur.recordUndo();
        pasteParagraphList(cur, theCuts[sel_index].first,
                           theCuts[sel_index].second, errorList);
-       cur.setSelection();
+       return true;
 }
 
 
-void pasteClipboardText(Cursor & cur, ErrorList & errorList, bool asParagraphs)
+bool pasteClipboardText(Cursor & cur, ErrorList & errorList, bool asParagraphs,
+                        Clipboard::TextType type)
 {
        // Use internal clipboard if it is the most recent one
-       if (theClipboard().isInternal()) {
-               pasteFromStack(cur, errorList, 0);
-               return;
-       }
+       // This overrides asParagraphs and type on purpose!
+       if (theClipboard().isInternal())
+               return pasteFromStack(cur, errorList, 0);
 
        // First try LyX format
-       if (theClipboard().hasLyXContents()) {
+       if ((type == Clipboard::LyXTextType ||
+            type == Clipboard::LyXOrPlainTextType ||
+            type == Clipboard::AnyTextType) &&
+           theClipboard().hasTextContents(Clipboard::LyXTextType)) {
                string lyx = theClipboard().getAsLyX();
                if (!lyx.empty()) {
                        // For some strange reason gcc 3.2 and 3.3 do not accept
@@ -880,28 +1129,98 @@ void pasteClipboardText(Cursor & cur, ErrorList & errorList, bool asParagraphs)
                                cur.recordUndo();
                                pasteParagraphList(cur, buffer.paragraphs(),
                                        buffer.params().documentClassPtr(), errorList);
-                               cur.setSelection();
-                               return;
+                               return true;
+                       }
+               }
+       }
+
+       // Then try TeX and HTML
+       Clipboard::TextType types[2] = {Clipboard::HtmlTextType, Clipboard::LaTeXTextType};
+       string names[2] = {"html", "latexclipboard"};
+       for (int i = 0; i < 2; ++i) {
+               if (type != types[i] && type != Clipboard::AnyTextType)
+                       continue;
+               bool available = theClipboard().hasTextContents(types[i]);
+
+               // If a specific type was explicitly requested, try to
+               // interpret plain text: The user told us that the clipboard
+               // contents is in the desired format
+               if (!available && type == types[i]) {
+                       types[i] = Clipboard::PlainTextType;
+                       available = theClipboard().hasTextContents(types[i]);
+               }
+
+               if (available) {
+                       docstring text = theClipboard().getAsText(types[i]);
+                       available = !text.empty();
+                       if (available) {
+                               // For some strange reason gcc 3.2 and 3.3 do not accept
+                               // Buffer buffer(string(), false);
+                               Buffer buffer("", false);
+                               buffer.setUnnamed(true);
+                               available = buffer.importString(names[i], text, errorList);
+                               if (available)
+                                       available = !buffer.paragraphs().empty();
+                               if (available && !buffer.paragraphs()[0].empty()) {
+                                       cur.recordUndo();
+                                       pasteParagraphList(cur, buffer.paragraphs(),
+                                               buffer.params().documentClassPtr(), errorList);
+                                       return true;
+                               }
                        }
                }
        }
 
        // Then try plain text
-       docstring const text = theClipboard().getAsText();
+       docstring const text = theClipboard().getAsText(Clipboard::PlainTextType);
+       if (text.empty())
+               return false;
+       cur.recordUndo();
+       if (asParagraphs)
+               cur.text()->insertStringAsParagraphs(cur, text, cur.current_font);
+       else
+               cur.text()->insertStringAsLines(cur, text, cur.current_font);
+       return true;
+}
+
+
+void pasteSimpleText(Cursor & cur, bool asParagraphs)
+{
+       docstring text;
+       // Use internal clipboard if it is the most recent one
+       if (theClipboard().isInternal()) {
+               if (!checkPastePossible(0))
+                       return;
+
+               ParagraphList const & pars = theCuts[0].first;
+               ParagraphList::const_iterator it = pars.begin();
+               for (; it != pars.end(); ++it) {
+                       if (it != pars.begin())
+                               text += "\n";
+                       text += (*it).asString();
+               }
+               asParagraphs = false;
+       } else {
+               // Then try plain text
+               text = theClipboard().getAsText(Clipboard::PlainTextType);
+       }
+
        if (text.empty())
                return;
+
        cur.recordUndo();
+       cutSelection(cur, true, false);
        if (asParagraphs)
-               cur.text()->insertStringAsParagraphs(cur, text);
+               cur.text()->insertStringAsParagraphs(cur, text, cur.current_font);
        else
-               cur.text()->insertStringAsLines(cur, text);
+               cur.text()->insertStringAsLines(cur, text, cur.current_font);
 }
 
 
 void pasteClipboardGraphics(Cursor & cur, ErrorList & /* errorList */,
                            Clipboard::GraphicsType preferedType)
 {
-       LASSERT(theClipboard().hasGraphicsContents(preferedType), /**/);
+       LASSERT(theClipboard().hasGraphicsContents(preferedType), return);
 
        // get picture from clipboard
        FileName filename = theClipboard().getAsGraphics(cur, preferedType);
@@ -909,9 +1228,9 @@ void pasteClipboardGraphics(Cursor & cur, ErrorList & /* errorList */,
                return;
 
        // create inset for graphic
-       InsetGraphics * inset = new InsetGraphics(*cur.buffer());
+       InsetGraphics * inset = new InsetGraphics(cur.buffer());
        InsetGraphicsParams params;
-       params.filename = support::DocFileName(filename.absFilename());
+       params.filename = support::DocFileName(filename.absFileName(), false);
        inset->setParams(params);
        cur.recordUndo();
        cur.insert(inset);
@@ -928,7 +1247,7 @@ void pasteSelection(Cursor & cur, ErrorList & errorList)
 }
 
 
-void replaceSelectionWithString(Cursor & cur, docstring const & str, bool backwards)
+void replaceSelectionWithString(Cursor & cur, docstring const & str)
 {
        cur.recordUndo();
        DocIterator selbeg = cur.selectionBegin();
@@ -943,17 +1262,10 @@ void replaceSelectionWithString(Cursor & cur, docstring const & str, bool backwa
        docstring::const_iterator cit = str.begin();
        docstring::const_iterator end = str.end();
        for (; cit != end; ++cit, ++pos)
-               par.insertChar(pos, *cit, font, cur.buffer()->params().trackChanges);
+               par.insertChar(pos, *cit, font, cur.buffer()->params().track_changes);
 
        // Cut the selection
        cutSelection(cur, true, false);
-
-       // select the replacement
-       if (backwards) {
-               selbeg.pos() += str.length();
-               cur.setSelection(selbeg, -int(str.length()));
-       } else
-               cur.setSelection(selbeg, str.length());
 }
 
 
@@ -969,31 +1281,43 @@ void eraseSelection(Cursor & cur)
        //lyxerr << "cap::eraseSelection begin: " << cur << endl;
        CursorSlice const & i1 = cur.selBegin();
        CursorSlice const & i2 = cur.selEnd();
-       if (i1.inset().asInsetMath()) {
-               saveSelection(cur);
-               cur.top() = i1;
-               if (i1.idx() == i2.idx()) {
-                       i1.cell().erase(i1.pos(), i2.pos());
-                       // We may have deleted i1.cell(cur.pos()).
-                       // Make sure that pos is valid.
-                       if (cur.pos() > cur.lastpos())
-                               cur.pos() = cur.lastpos();
-               } else {
-                       InsetMath * p = i1.asInsetMath();
-                       Inset::row_type r1, r2;
-                       Inset::col_type c1, c2;
-                       region(i1, i2, r1, r2, c1, c2);
-                       for (Inset::row_type row = r1; row <= r2; ++row)
-                               for (Inset::col_type col = c1; col <= c2; ++col)
-                                       p->cell(p->index(row, col)).clear();
-                       // We've deleted the whole cell. Only pos 0 is valid.
-                       cur.pos() = 0;
-               }
-               // need a valid cursor. (Lgb)
-               cur.clearSelection();
+       if (!i1.asInsetMath()) {
+               LYXERR0("Can't erase this selection");
+               return;
+       }
+
+       saveSelection(cur);
+       cur.top() = i1;
+       InsetMath * p = i1.asInsetMath();
+       if (i1.idx() == i2.idx()) {
+               i1.cell().erase(i1.pos(), i2.pos());
+               // We may have deleted i1.cell(cur.pos()).
+               // Make sure that pos is valid.
+               if (cur.pos() > cur.lastpos())
+                       cur.pos() = cur.lastpos();
+       } else if (p->nrows() > 0 && p->ncols() > 0) {
+               // This is a grid, delete a nice square region
+               Inset::row_type r1, r2;
+               Inset::col_type c1, c2;
+               region(i1, i2, r1, r2, c1, c2);
+               for (Inset::row_type row = r1; row <= r2; ++row)
+                       for (Inset::col_type col = c1; col <= c2; ++col)
+                               p->cell(p->index(row, col)).clear();
+               // We've deleted the whole cell. Only pos 0 is valid.
+               cur.pos() = 0;
        } else {
-               lyxerr << "can't erase this selection 1" << endl;
+               Inset::idx_type idx1 = i1.idx();
+               Inset::idx_type idx2 = i2.idx();
+               if (idx1 > idx2)
+                       swap(idx1, idx2);
+               for (Inset::idx_type idx = idx1 ; idx <= idx2; ++idx)
+                       p->cell(idx).clear();
+               // We've deleted the whole cell. Only pos 0 is valid.
+               cur.pos() = 0;
        }
+
+       // need a valid cursor. (Lgb)
+       cur.clearSelection();
        //lyxerr << "cap::eraseSelection end: " << cur << endl;
 }
 
@@ -1038,7 +1362,8 @@ docstring grabSelection(Cursor const & cur)
        if (i1.idx() == i2.idx()) {
                if (i1.inset().asInsetMath()) {
                        MathData::const_iterator it = i1.cell().begin();
-                       return asString(MathData(it + i1.pos(), it + i2.pos()));
+                       Buffer * buf = cur.buffer();
+                       return asString(MathData(buf, it + i1.pos(), it + i2.pos()));
                } else {
                        return from_ascii("unknown selection 1");
                }