Sidebar: Add "Commit" action

When this tree leaf is selected, the view switches
to the commit view.

PBGitSidebarController.h

@@ -9,11 +9,16 @@
 #import <Cocoa/Cocoa.h>
 #import "PBViewController.h"
 
+@class PBSourceViewAction;
+
 @interface PBGitSidebarController : PBViewController {
 	IBOutlet NSWindow *window;
 	IBOutlet NSOutlineView *sourceView;
 
 	NSMutableArray *items;
+
+	/* Specific things */
+	PBSourceViewAction *commitAction;
 }
 
 @property(readonly) NSMutableArray *items;

PBGitSidebarController.m

@@ -9,6 +9,7 @@
 #import "PBGitSidebarController.h"
 #import "PBSourceViewItem.h"
 #import "NSOutlineViewExt.h"
+#import "PBSourceViewAction.h"
 
 @interface PBGitSidebarController ()
 
@@ -82,7 +83,13 @@
 		return;
 	}
 
-	/* Handle Remotes etc */
+	if (item == commitAction)
+		[[repository windowController] showCommitView:self];
+
+	/* ... */
+
+	
+	/* Handle Remotes */
 }
 
 #pragma mark NSOutlineView delegate methods
@@ -119,6 +126,12 @@
 {
 	PBSourceViewItem *actions = [PBSourceViewItem groupItemWithTitle:@"Actions"];
 
+	actions.isUncollapsible = YES;
+
+	commitAction = [PBSourceViewAction itemWithTitle:@"Index / Commit"];
+	commitAction.icon = [NSImage imageNamed:@"CommitViewTemplate"];
+	[actions addChild:commitAction];
+	
 	PBSourceViewItem *branches = [PBSourceViewItem groupItemWithTitle:@"Branches"];
 	PBSourceViewItem *remotes = [PBSourceViewItem groupItemWithTitle:@"Remotes"];
 	PBSourceViewItem *tags = [PBSourceViewItem groupItemWithTitle:@"Tags"];

PBSourceViewItem.h

@@ -18,6 +18,7 @@
 	PBSourceViewItem *parent;
 
 	BOOL isGroupItem;
+	BOOL isUncollapsible;
 }
 
 + (id)groupItemWithTitle:(NSString *)title;
@@ -36,7 +37,7 @@
 
 @property(retain) NSString *title;
 @property(readonly) NSMutableArray *children;
-@property(assign) BOOL isGroupItem;
+@property(assign) BOOL isGroupItem, isUncollapsible;
 @property(retain) PBGitRevSpecifier *revSpecifier;
 @property(retain) PBSourceViewItem *parent;
 @end

PBSourceViewItem.m

@@ -10,7 +10,7 @@
 #import "PBGitRevSpecifier.h"
 
 @implementation PBSourceViewItem
-@synthesize parent, title, isGroupItem, children, revSpecifier;
+@synthesize parent, title, isGroupItem, children, revSpecifier, isUncollapsible;
 
 - (id)init
 {