Add methods dealing with menus needed for future features.

Switch from storing both the ref and the commit to storing just one or the other as a refish.

Change action methods that receive PBRefMenuItem to support the change in functionality. In particular the removeRefSheetDidEnd:returnCode:contextInfo: method in PBRefController now looks up the commit for the ref (this was the only place that needed both the ref and the commit).

PBGitRevisionCell.m

@@ -291,7 +291,7 @@
 	if (!ref)
 		return [self menu];
 
-	NSArray *items = [contextMenuDelegate menuItemsForRef:ref commit:[self objectValue]];
+	NSArray *items = [contextMenuDelegate menuItemsForRef:ref];
 	NSMenu *menu = [[NSMenu alloc] init];
 	for (NSMenuItem *item in items)
 		[menu addItem:item];

PBRefContextDelegate.h

@@ -9,5 +9,6 @@
 
 
 @protocol PBRefContextDelegate
-- (NSArray *) menuItemsForRef:(PBGitRef *)ref commit:(PBGitCommit *)commit;
+- (NSArray *) menuItemsForRef:(PBGitRef *)ref;
+- (NSArray *) menuItemsForCommit:(PBGitCommit *)commit;
 @end

PBRefController.h

@@ -13,6 +13,8 @@
 #import "PBGitCommit.h"
 #import "PBRefContextDelegate.h"
 
+@class PBRefMenuItem;
+
 @interface PBRefController : NSObject <PBRefContextDelegate> {
 	IBOutlet __weak PBGitHistoryController *historyController;
 	IBOutlet NSArrayController *commitController;
@@ -29,7 +31,8 @@
 - (IBAction)closeSheet:(id) sender;
 - (IBAction)saveSheet:(id) sender;
 
-- (NSArray *) menuItemsForRef:(PBGitRef *)ref commit:(PBGitCommit *)commit;
+- (NSArray *) menuItemsForRef:(PBGitRef *)ref;
+- (NSArray *) menuItemsForCommit:(PBGitCommit *)commit;
 
 - (void) changeBranch:(NSMenuItem *)sender;
 - (void) selectCurrentBranch;

PBRefController.m

@@ -39,20 +39,21 @@
 	if (returnCode == NSAlertDefaultReturn) {
 		int ret = 1;
         PBRefMenuItem *refMenuItem = contextInfo;
-		[historyController.repository outputForArguments:[NSArray arrayWithObjects:@"update-ref", @"-d", [[refMenuItem ref] ref], nil] retValue: &ret];
+		[historyController.repository outputForArguments:[NSArray arrayWithObjects:@"update-ref", @"-d", [[refMenuItem refish] refishName], nil] retValue: &ret];
 		if (ret) {
 			NSLog(@"Removing ref failed!");
 			return;
 		}
-		[historyController.repository removeBranch:[[PBGitRevSpecifier alloc] initWithRef:[refMenuItem ref]]];
-		[[refMenuItem commit] removeRef:[refMenuItem ref]];
+		[historyController.repository removeBranch:[[PBGitRevSpecifier alloc] initWithRef:[refMenuItem refish]]];
+		PBGitCommit *commitForRef = [historyController.repository commitForRef:[refMenuItem refish]];
+		[commitForRef removeRef:[refMenuItem refish]];
 		[commitController rearrangeObjects];
 	}
 }
 
 - (void) removeRef:(PBRefMenuItem *)sender
 {
-	NSString *ref_desc = [NSString stringWithFormat:@"%@ %@", [[sender ref] type], [[sender ref] shortName]];
+	NSString *ref_desc = [NSString stringWithFormat:@"%@ %@", [(PBGitRef *)[sender refish] type], [[sender refish] shortName]];
 	NSString *question = [NSString stringWithFormat:@"Are you sure you want to remove the %@?", ref_desc];
     NSBeginAlertSheet([NSString stringWithFormat:@"Delete %@?", ref_desc], @"Delete", @"Cancel", nil, [[historyController view] window], self, @selector(removeRefSheetDidEnd:returnCode:contextInfo:), NULL, sender, question);
 }
@@ -60,7 +61,7 @@
 - (void) checkoutRef:(PBRefMenuItem *)sender
 {
 	int ret = 1;
-	[historyController.repository outputInWorkdirForArguments:[NSArray arrayWithObjects:@"checkout", [[sender ref] shortName], nil] retValue: &ret];
+	[historyController.repository outputInWorkdirForArguments:[NSArray arrayWithObjects:@"checkout", [[sender refish] shortName], nil] retValue: &ret];
 	if (ret) {
 		[[historyController.repository windowController] showMessageSheet:@"Checking out branch failed" infoText:@"There was an error checking out the branch. Perhaps your working directory is not clean?"];
 		return;
@@ -71,10 +72,10 @@
 
 - (void) tagInfo:(PBRefMenuItem *)sender
 {
-    NSString *message = [NSString stringWithFormat:@"Info for tag: %@", [[sender ref] shortName]];
+    NSString *message = [NSString stringWithFormat:@"Info for tag: %@", [[sender refish] shortName]];
 
     int ret = 1;
-    NSString *info = [historyController.repository outputInWorkdirForArguments:[NSArray arrayWithObjects:@"tag", @"-n50", @"-l", [[sender ref] shortName], nil] retValue: &ret];
+    NSString *info = [historyController.repository outputInWorkdirForArguments:[NSArray arrayWithObjects:@"tag", @"-n50", @"-l", [[sender refish] shortName], nil] retValue: &ret];
 
     if (!ret) {
 	    [[historyController.repository windowController] showMessageSheet:message infoText:info];
@@ -82,11 +83,19 @@
     return;
 }
 
-- (NSArray *) menuItemsForRef:(PBGitRef *)ref commit:(PBGitCommit *)commit
+#pragma mark Contextual menus
+
+- (NSArray *) menuItemsForRef:(PBGitRef *)ref
 {
-	return [PBRefMenuItem defaultMenuItemsForRef:ref commit:commit target:self];
+	return [PBRefMenuItem defaultMenuItemsForRef:ref inRepository:historyController.repository target:self];
 }
 
+- (NSArray *) menuItemsForCommit:(PBGitCommit *)commit
+{
+	return [PBRefMenuItem defaultMenuItemsForCommit:commit target:self];
+}
+
+
 # pragma mark Tableview delegate methods
 
 - (BOOL)tableView:(NSTableView *)tv writeRowsWithIndexes:(NSIndexSet *)rowIndexes toPasteboard:(NSPasteboard*)pboard

PBRefMenuItem.h

@@ -11,13 +11,13 @@
 #import "PBGitCommit.h"
 
 @interface PBRefMenuItem : NSMenuItem {
-	PBGitRef *ref;
-	PBGitCommit *commit;
+	id <PBGitRefish> refish;
 }
-	
-@property (retain) PBGitCommit *commit;
-@property (retain) PBGitRef *ref;
 
-+ (NSArray *)defaultMenuItemsForRef:(PBGitRef *)ref commit:(PBGitCommit *)commit target:(id)target;
+@property (retain) id <PBGitRefish> refish;
+
++ (PBRefMenuItem *) separatorItem;
++ (NSArray *) defaultMenuItemsForRef:(PBGitRef *)ref inRepository:(PBGitRepository *)repo target:(id)target;
++ (NSArray *) defaultMenuItemsForCommit:(PBGitCommit *)commit target:(id)target;
 
 @end

PBRefMenuItem.m

@@ -10,37 +10,72 @@
 
 
 @implementation PBRefMenuItem
-@synthesize ref, commit;
+@synthesize refish;
 
-+ (NSArray *)defaultMenuItemsForRef:(PBGitRef *)ref commit:(PBGitCommit *)commit target:(id)target
++ (PBRefMenuItem *) itemWithTitle:(NSString *)title action:(SEL)selector enabled:(BOOL)isEnabled
 {
-	NSMutableArray *array = [NSMutableArray array];
-	NSString *type = [ref type];
-	if ([type isEqualToString:@"remote"])
-		type = @"remote branch";
-	else if ([type isEqualToString:@"head"])
-		type = @"branch";
+	if (!isEnabled)
+		selector = nil;
 
-	[array addObject:[[PBRefMenuItem alloc] initWithTitle:[@"Delete " stringByAppendingString:type]
-												   action:@selector(removeRef:)
-											keyEquivalent: @""]];
-	if ([type isEqualToString:@"branch"])
-		[array addObject:[[PBRefMenuItem alloc] initWithTitle:@"Checkout branch"
-													   action:@selector(checkoutRef:)
-												keyEquivalent: @""]];
+	PBRefMenuItem *item = [[PBRefMenuItem alloc] initWithTitle:title action:selector keyEquivalent:@""];
+	[item setEnabled:isEnabled];
+	return item;
+}
 
-    if ([type isEqualToString:@"tag"])
-		[array addObject:[[PBRefMenuItem alloc] initWithTitle:@"View tag info"
-													   action:@selector(tagInfo:)
-												keyEquivalent: @""]];    
-	
-	for (PBRefMenuItem *item in array)
-	{
-		[item setTarget: target];
-		[item setRef: ref];
-		[item setCommit:commit];
+
++ (PBRefMenuItem *) separatorItem
+{
+	PBRefMenuItem *item = (PBRefMenuItem *)[super separatorItem];
+	return item;
+}
+
+
++ (NSArray *) defaultMenuItemsForRef:(PBGitRef *)ref inRepository:(PBGitRepository *)repo target:(id)target
+{
+	if (!ref || !repo || !target) {
+		return nil;
 	}
 
-	return array;
+	NSMutableArray *items = [NSMutableArray array];
+
+	NSString *targetRefName = [ref shortName];
+
+	PBGitRef *headRef = [[repo headRef] ref];
+	BOOL isHead = [ref isEqualToRef:headRef];
+
+	// checkout ref
+	NSString *checkoutTitle = [@"Checkout " stringByAppendingString:targetRefName];
+	[items addObject:[PBRefMenuItem itemWithTitle:checkoutTitle action:@selector(checkoutRef:) enabled:!isHead]];
+
+	// view tag info
+	if ([ref isTag])
+		[items addObject:[PBRefMenuItem itemWithTitle:@"View tag info" action:@selector(tagInfo:) enabled:YES]];
+
+	// delete ref
+	[items addObject:[PBRefMenuItem separatorItem]];
+	NSString *deleteTitle = [NSString stringWithFormat:@"Delete %@…", targetRefName];
+	[items addObject:[PBRefMenuItem itemWithTitle:deleteTitle action:@selector(removeRef:) enabled:YES]];
+
+	for (PBRefMenuItem *item in items) {
+		[item setTarget:target];
+		[item setRefish:ref];
+	}
+
+	return items;
 }
+
+
++ (NSArray *) defaultMenuItemsForCommit:(PBGitCommit *)commit target:(id)target
+{
+	NSMutableArray *items = [NSMutableArray array];
+
+	for (PBRefMenuItem *item in items) {
+		[item setTarget:target];
+		[item setRefish:commit];
+	}
+
+	return items;
+}
+
+
 @end

PBWebHistoryController.m

@@ -115,7 +115,7 @@ contextMenuItemsForElement:(NSDictionary *)element
 			for (PBGitRef *ref in historyController.webCommit.refs)
 			{
 				if ([[ref shortName] isEqualToString:selectedRefString])
-					return [contextMenuDelegate menuItemsForRef:ref commit:historyController.webCommit];
+					return [contextMenuDelegate menuItemsForRef:ref];
 			}
 			NSLog(@"Could not find selected ref!");
 			return defaultMenuItems;