Fix crash that occurs if the cursor is in a table cell when the document class

is changed
	* src/cursor.C: remove unused 'using std::swap'
	* src/BufferView.C: ditto

	* src/CutAndPaste.[Ch]
	(switchBetweenClasses): replace ParagraphList argument with InsetText
	argument. This avoids an unnecessary swap in lyxfunc.C.

	* src/CutAndPaste.C
	(pasteSelectionHelper): Adjust to the changes above
	(pasteSelectionHelper): Use ParagraphList::swap instead of std::swap.
	This fixes the crash.

	* src/lyxfunc.C
	(LyXFunc::dispatch): Adjust to switchBetweenClasses changes


git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@13895 a592a061-630c-0410-9148-cb99ea01b6c8

src/BufferView.C

@@ -54,7 +54,6 @@ using lyx::cap::setSelectionRange;
 using std::distance;
 using std::find;
 using std::string;
-using std::swap;
 using std::vector;
 
 

src/CutAndPaste.C

@@ -150,7 +150,14 @@ pasteSelectionHelper(Buffer const & buffer,
 	}
 
 	// Make sure there is no class difference.
-	lyx::cap::switchBetweenClasses(textclass, tc, insertion, errorlist);
+	InsetText in;
+	// This works without copying any paragraph data because we have
+	// a specialized swap method for ParagraphList. This is important
+	// since we store pointers to insets at some places and we don't
+	// want to invalidate them.
+	insertion.swap(in.paragraphs());
+	lyx::cap::switchBetweenClasses(textclass, tc, in, errorlist);
+	insertion.swap(in.paragraphs());
 
 	ParagraphList::iterator tmpbuf = insertion.begin();
 	int depth_delta = pars[pit].params().depth() - tmpbuf->params().depth();
@@ -200,8 +207,7 @@ pasteSelectionHelper(Buffer const & buffer,
 
 	// Prepare the paragraphs and insets for insertion.
 	// A couple of insets store buffer references so need updating.
-	InsetText in;
-	std::swap(in.paragraphs(), insertion);
+	insertion.swap(in.paragraphs());
 
 	ParIterator fpit = par_iterator_begin(in);
 	ParIterator fend = par_iterator_end(in);
@@ -223,7 +229,7 @@ pasteSelectionHelper(Buffer const & buffer,
 			}
 		}
 	}
-	std::swap(in.paragraphs(), insertion);
+	insertion.swap(in.paragraphs());
 
 	// Split the paragraph for inserting the buf if necessary.
 	if (!empty)
@@ -368,18 +374,15 @@ string grabAndEraseSelection(LCursor & cur)
 
 
 void switchBetweenClasses(textclass_type c1, textclass_type c2,
-	ParagraphList & pars, ErrorList & errorlist)
+	InsetText & in, ErrorList & errorlist)
 {
-	BOOST_ASSERT(!pars.empty());
+	BOOST_ASSERT(!in.paragraphs().empty());
 	if (c1 == c2)
 		return;
 
 	LyXTextClass const & tclass1 = textclasslist[c1];
 	LyXTextClass const & tclass2 = textclasslist[c2];
 
-	InsetText in;
-	std::swap(in.paragraphs(), pars);
-
 	// layouts
 	ParIterator end = par_iterator_end(in);
 	for (ParIterator it = par_iterator_begin(in); it != end; ++it) {
@@ -432,8 +435,6 @@ void switchBetweenClasses(textclass_type c1, textclass_type c2,
 			}
 		}
 	}
-
-	std::swap(in.paragraphs(), pars);
 }
 
 

src/CutAndPaste.h

@@ -23,6 +23,7 @@
 
 class Buffer;
 class ErrorList;
+class InsetText;
 class LyXTextClass;
 class LCursor;
 
@@ -67,9 +68,8 @@ void pasteParagraphList(LCursor & cur, ParagraphList const & parlist,
  *  It changes layouts and character styles.
  */
 void switchBetweenClasses(lyx::textclass_type c1,
-				lyx::textclass_type c2,
-				ParagraphList & par,
-				ErrorList &);
+                          lyx::textclass_type c2,
+                          InsetText & in, ErrorList &);
 
 // only used by the spellchecker
 void replaceWord(LCursor & cur, std::string const & replacestring);

src/cursor.C

@@ -63,7 +63,6 @@ using std::endl;
 using std::isalpha;
 #endif
 using std::min;
-using std::swap;
 
 namespace {
 

src/lyxfunc.C

@@ -1563,7 +1563,7 @@ void LyXFunc::dispatch(FuncRequest const & cmd)
 			ErrorList el;
 			lyx::cap::switchBetweenClasses(
 				old_class, new_class,
-				buffer->paragraphs(), el);
+				static_cast<InsetText &>(buffer->inset()), el);
 
 			view()->setCursor(backcur.asDocIterator(&(buffer->inset())));
 			bufferErrors(*buffer, el);