From f41c28ff252cdc6f8276515282b2535a59a227d1 Mon Sep 17 00:00:00 2001
From: Matthias Neeracher <neeri@users.sourceforge.net>
Date: Mon, 16 Apr 2007 04:54:02 +0000
Subject: [PATCH] Support undo for grooves

---
 Sources/VLSheetView.h  |  1 +
 Sources/VLSheetView.mm | 19 +++++++++++++++----
 2 files changed, 16 insertions(+), 4 deletions(-)

diff --git a/Sources/VLSheetView.h b/Sources/VLSheetView.h
index b256187..d1f9564 100644
--- a/Sources/VLSheetView.h
+++ b/Sources/VLSheetView.h
@@ -121,6 +121,7 @@ enum VLRecalc {
 - (VLRegion) findRegionForEvent:(NSEvent *) event;
 
 - (void) setGroove:(NSString *)groove;
+- (void) setGrooveMenu:(NSString *)groove;
 
 @end
 
diff --git a/Sources/VLSheetView.mm b/Sources/VLSheetView.mm
index 88622b5..ec43bb2 100644
--- a/Sources/VLSheetView.mm
+++ b/Sources/VLSheetView.mm
@@ -893,14 +893,20 @@ static int8_t sSharpAcc[] = {
 {
 	[[self document] addObserver:self forKeyPath:@"song" options:0 context:nil];
 	[[self document] addObserver:self forKeyPath:@"songKey" options:0 context:nil];	
-	[self setGroove:[[self document] valueForKey:@"songGroove"]];
+	[[self document] addObserver:self forKeyPath:@"songGroove" options:0 context:nil];	
+	[self setGrooveMenu:[[self document] valueForKey:@"songGroove"]];
 }
 
 - (void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)o change:(NSDictionary *)c context:(id)ctx
 {
-	if ([keyPath isEqual:@"songKey"])
+	if ([keyPath isEqual:@"songKey"]) {
 		fNeedsRecalc = kRecalc;
-	[self setNeedsDisplay: YES];			
+		[self setNeedsDisplay: YES];
+	} else if ([keyPath isEqual:@"songKey"]) {
+		[self setNeedsDisplay: YES];
+	} else if ([keyPath isEqual:@"songGroove"]) {
+		[self setGrooveMenu:[[self document] valueForKey:@"songGroove"]];
+	}					
 }
 
 - (IBAction)endRepeatSheet:(id)sender
@@ -910,7 +916,7 @@ static int8_t sSharpAcc[] = {
 
 - (IBAction)selectGroove:(id)sender
 {
-	if ([sender tag])
+	if ([sender tag]) 
 		[[VLGrooveController alloc] initWithSheetView:self];
 	else	
 		[self setGroove:[sender title]];
@@ -919,6 +925,11 @@ static int8_t sSharpAcc[] = {
 - (void)setGroove:(NSString *)groove
 {
 	[[self document] setValue:groove forKey:@"songGroove"];
+	[self setGrooveMenu:groove];
+}
+
+- (void)setGrooveMenu:(NSString *)groove
+{
 	int removeIndex = [fGrooveMenu indexOfItemWithTitle:groove];
 	if (removeIndex < 0 && [fGrooveMenu numberOfItems] > 11)
 		removeIndex = 11;