*** empty log message ***

git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@8931 a592a061-630c-0410-9148-cb99ea01b6c8

src/dociterator.C

@@ -410,6 +410,17 @@ void DocIterator::backwardPos()
 }
 
 
+bool DocIterator::hasPart(DocIterator const & it) const
+{
+	// it can't be a part if it is larger
+	if (it.size() > size())
+		return false;
+
+	// as inset adresses are the 'last' level
+	return &it.back().inset() == &operator[](it.size() - 1).inset();
+}
+
+
 std::ostream & operator<<(std::ostream & os, DocIterator const & dit)
 {
 	for (size_t i = 0, n = dit.size(); i != n; ++i)

src/dociterator.h

@@ -185,6 +185,9 @@ public:
 	/// move backward one inset
 	void backwardInset();
 
+	/// are we some 'extension' (i.e. deeper nested) of the given iterator
+	bool hasPart(DocIterator const & it) const;
+
 	/// output
 	friend std::ostream &
 	operator<<(std::ostream & os, DocIterator const & cur);

src/mathed/math_nestinset.C

@@ -927,7 +927,7 @@ void MathNestInset::lfunMouseMotion(LCursor & cur, FuncRequest & cmd)
 	if (cmd.button() == mouse_button::button1) {
 		LCursor & bvcur = cur.bv().cursor();
 		if (abs(cmd.x - first_x) + abs(cmd.y - first_y) > 4
-        && cur.size() <= bvcur.anchor_.size()) {
+        && bvcur.anchor_.hasPart(cur)) {
 			first_x = cmd.x;
 			first_y = cmd.y;
 

src/text3.C

@@ -1129,9 +1129,9 @@ void LyXText::dispatch(LCursor & cur, FuncRequest & cmd)
 
 		// ignore motions deeper nested than the real anchor
 		LCursor & bvcur = cur.bv().cursor();
-		if (bvcur.anchor_.size() < cur.size())
+		if (!bvcur.anchor_.hasPart(cur))
 			break;
-
+ 
 		CursorSlice old = cur.top();
 		setCursorFromCoordinates(cur, cmd.x, cmd.y);