minor cleanup

git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@3206 a592a061-630c-0410-9148-cb99ea01b6c8

src/ChangeLog

@@ -1,3 +1,9 @@
+
+2001-12-13  André Pönitz <poenitz@gmx.net>
+
+	* undostack.[Ch]:
+	* undo_func.C: minor cleanup
+
 2001-12-12  Jean-Marc Lasgouttes  <lasgouttes@freesurf.fr>
 
 	* FontLoader.C (getFontinfo): only use symbol fonts with encoding

src/undo_funcs.C

@@ -26,10 +26,12 @@ bool undo_finished;
 /// a flag
 bool undo_frozen;
 
+
 bool textUndo(BufferView * bv)
 {
 	// returns false if no undo possible
-	Undo * undo = bv->buffer()->undostack.pop();
+	Undo * undo = bv->buffer()->undostack.top();
+	bv->buffer()->undostack.pop();
 	if (undo) {
 		finishUndo();
 		if (!undo_frozen) {
@@ -50,7 +52,8 @@ bool textUndo(BufferView * bv)
 bool textRedo(BufferView * bv)
 {
 	// returns false if no redo possible
-	Undo * undo = bv->buffer()->redostack.pop();
+	Undo * undo = bv->buffer()->redostack.top();
+	bv->buffer()->redostack.pop();
 	if (undo) {
 		finishUndo();
 		if (!undo_frozen) {
@@ -247,7 +250,6 @@ void setRedo(BufferView * bv, Undo::undo_kind kind,
 	bv->buffer()->redostack.push(createUndo(bv, kind, first, behind));
 }
 
-using lyx::pos_type;
 
 Undo * createUndo(BufferView * bv, Undo::undo_kind kind,
                   Paragraph const * first, Paragraph const * behind)
@@ -345,6 +347,7 @@ void setCursorParUndo(BufferView * bv)
 			bv->text->cursor.par()->next());
 }
 
+
 Paragraph * firstUndoParagraph(BufferView * bv, int inset_id)
 {
 	Inset * inset = bv->buffer()->getInsetFromID(inset_id);
@@ -356,6 +359,7 @@ Paragraph * firstUndoParagraph(BufferView * bv, int inset_id)
 	return bv->text->ownerParagraph();
 }
 
+
 LyXCursor const & undoCursor(BufferView * bv)
 {
 	if (bv->theLockingInset())

src/undostack.C

@@ -23,18 +23,18 @@ UndoStack::UndoStack()
 	: limit(100) {}
 
 
-Undo * UndoStack::pop()
+void UndoStack::pop()
 {
-	if (stakk.empty()) return 0;
-	Undo * result = stakk.front();
+	if (stakk.empty())
+		return;
 	stakk.pop_front();
-	return result;
 }
 
 
-Undo * UndoStack::top()
+Undo * UndoStack::top() const
 {
-	if (stakk.empty()) return 0;
+	if (stakk.empty())
+		return 0;
 	return stakk.front();
 }
 
@@ -63,7 +63,8 @@ void UndoStack::SetStackLimit(Stakk::size_type l)
 
 void UndoStack::push(Undo * undo_arg)
 {
-	if (!undo_arg) return;
+	if (!undo_arg)
+		return;
 	
 	stakk.push_front(undo_arg);
 	if (stakk.size() > limit) {
@@ -74,6 +75,7 @@ void UndoStack::push(Undo * undo_arg)
 }
 
 
-bool UndoStack::empty() const {
+bool UndoStack::empty() const
+{
 	return stakk.empty();
 }

src/undostack.h

@@ -33,14 +33,14 @@ public:
 	///
 	UndoStack();
 	///
-	Undo * pop();
+	~UndoStack();
 	///
-	Undo * top();
+	void pop();
+	///
+	Undo * top() const;
 	///
 	bool empty() const;
 	///
-	~UndoStack();
-	///
 	void clear();
 	///
 	void SetStackLimit(Stakk::size_type l);