Load commit list in a separate thread

This makes the initial startup much faster. Commits get loaded in a separate
thread, and are displayed every 1000 commits.

There is a bug in here that makes fails a click while it is loading the commit
list. Not sure how to fix this, perhaps send the arrayController?

GitTest.xcodeproj/project.pbxproj

@@ -18,9 +18,7 @@
 		F56526240E03D85900F03B52 /* WebKit.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = F56526230E03D85900F03B52 /* WebKit.framework */; };
 		F565262B0E03D89B00F03B52 /* PBWebGitController.m in Sources */ = {isa = PBXBuildFile; fileRef = F565262A0E03D89B00F03B52 /* PBWebGitController.m */; };
 		F565265A0E03E71B00F03B52 /* commit.html in Resources */ = {isa = PBXBuildFile; fileRef = F56526590E03E71B00F03B52 /* commit.html */; };
-		F57ABDDF0E0441DE00A088B8 /* commit.js in Sources */ = {isa = PBXBuildFile; fileRef = F57ABDDE0E0441DE00A088B8 /* commit.js */; };
 		F57ABE0B0E0442DD00A088B8 /* commit.js in Resources */ = {isa = PBXBuildFile; fileRef = F57ABDDE0E0441DE00A088B8 /* commit.js */; };
-		F57ABE190E04431D00A088B8 /* prototype.js in Sources */ = {isa = PBXBuildFile; fileRef = F57ABE180E04431D00A088B8 /* prototype.js */; };
 		F57ABE2B0E04435100A088B8 /* prototype.js in Resources */ = {isa = PBXBuildFile; fileRef = F57ABE180E04431D00A088B8 /* prototype.js */; };
 		F58A8F280E043698007E3FC0 /* commits.css in Resources */ = {isa = PBXBuildFile; fileRef = F58A8F270E043698007E3FC0 /* commits.css */; };
 		F5945E170E02B0C200706420 /* PBGitRepository.m in Sources */ = {isa = PBXBuildFile; fileRef = F5945E160E02B0C200706420 /* PBGitRepository.m */; };
@@ -48,7 +46,7 @@
 		F56526290E03D89B00F03B52 /* PBWebGitController.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = PBWebGitController.h; sourceTree = "<group>"; };
 		F565262A0E03D89B00F03B52 /* PBWebGitController.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = PBWebGitController.m; sourceTree = "<group>"; };
 		F56526590E03E71B00F03B52 /* commit.html */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text.html; name = commit.html; path = html/commit.html; sourceTree = "<group>"; };
-		F57ABDDE0E0441DE00A088B8 /* commit.js */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.javascript; name = commit.js; path = html/commit.js; sourceTree = "<group>"; };
+		F57ABDDE0E0441DE00A088B8 /* commit.js */ = {isa = PBXFileReference; explicitFileType = sourcecode.javascript; fileEncoding = 4; name = commit.js; path = html/commit.js; sourceTree = "<group>"; };
 		F57ABE180E04431D00A088B8 /* prototype.js */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.javascript; name = prototype.js; path = html/prototype.js; sourceTree = "<group>"; };
 		F58A8F270E043698007E3FC0 /* commits.css */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text.css; name = commits.css; path = html/commits.css; sourceTree = "<group>"; };
 		F5945E150E02B0C200706420 /* PBGitRepository.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = PBGitRepository.h; sourceTree = "<group>"; };
@@ -239,8 +237,6 @@
 				F56524BB0E02D22D00F03B52 /* NSFileHandleExt.m in Sources */,
 				F56524F00E02D45200F03B52 /* PBGitCommit.m in Sources */,
 				F565262B0E03D89B00F03B52 /* PBWebGitController.m in Sources */,
-				F57ABDDF0E0441DE00A088B8 /* commit.js in Sources */,
-				F57ABE190E04431D00A088B8 /* prototype.js in Sources */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 		};

PBGitRepository.h

@@ -13,9 +13,13 @@
 	NSArray* commits;
 }
 
-+ (PBGitRepository*) repositoryWithPath:(NSString*) path;
 + (void) setGitPath;
+
++ (PBGitRepository*) repositoryWithPath:(NSString*) path;
+- (PBGitRepository*) initWithPath:(NSString*) path;
+
 - (NSFileHandle*) handleForCommand:(NSString*) cmd;
+- (void) initializeCommits;
 - (void) addCommit: (id)obj;
 
 @property (copy) NSString* path;

PBGitRepository.m

@@ -13,16 +13,25 @@
 
 @implementation PBGitRepository
 
+@synthesize commits;
 static NSString* gitPath = @"/usr/bin/env";
 
 + (PBGitRepository*) repositoryWithPath:(NSString*) path
 {
 	[self setGitPath];
-	PBGitRepository* repo = [[PBGitRepository alloc] init];
-	repo.path = path;
+	PBGitRepository* repo = [[PBGitRepository alloc] initWithPath: path];
 	return repo;
 }
 
+- (PBGitRepository*) initWithPath: (NSString*) p
+{
+	self.path = p;
+	NSThread * commitThread = [[NSThread alloc] initWithTarget: self selector: @selector(initializeCommits) object:nil];
+	[commitThread start];
+	return self;
+}
+
+
 + (void) setGitPath
 {
 	char* path = getenv("GIT_PATH");
@@ -60,26 +69,33 @@ static NSString* gitPath = @"/usr/bin/env";
 	commits = obj;
 }
 
-- (NSArray*) commits
+- (void) initializeCommits
 {
-	if (commits != nil)
-		return commits;
+	NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
 	
-	NSFileHandle* handle = [self handleForCommand:@"log --pretty=format:%H\01%s\01%an HEAD"];
 	NSMutableArray * newArray = [NSMutableArray array];
+	NSDate* start = [NSDate date];
+	NSFileHandle* handle = [self handleForCommand:@"log --pretty=format:%H\01%s\01%an HEAD"];
 	NSString* currentLine = [handle readLine];
-
+	int num = 0;
 	while (currentLine.length > 0) {
 		NSArray* components = [currentLine componentsSeparatedByString:@"\01"];
 		PBGitCommit* newCommit = [[PBGitCommit alloc] initWithRepository: self andSha: [components objectAtIndex:0]];
 		newCommit.subject = [components objectAtIndex:1];
 		newCommit.author = [components objectAtIndex:2];
 		[newArray addObject: newCommit];
+		num++;
+		if (num % 1000 == 0)
+			[self performSelectorOnMainThread:@selector(setCommits:) withObject:newArray waitUntilDone:NO];
 		currentLine = [handle readLine];
 	}
 
-	commits = newArray;
-	return commits;
+	[self performSelectorOnMainThread:@selector(setCommits:) withObject:newArray waitUntilDone:YES];
+	NSTimeInterval duration = [[NSDate date] timeIntervalSinceDate:start];
+	NSLog(@"Loaded %i commits in %f seconds", num, duration);
+
+	[pool release];
+	[NSThread exit];
 }
 
 - (NSFileHandle*) handleForCommand:(NSString *)cmd

PBWebGitController.h

@@ -8,15 +8,17 @@
 
 #import <Cocoa/Cocoa.h>
 #import "GitTest_AppDelegate.h"
+#import "PBGitCommit.h"
 #import <WebKit/WebKit.h>
 
 @interface PBWebGitController : NSObject {
 	IBOutlet GitTest_AppDelegate* controller;
 	IBOutlet WebView* view;
 	IBOutlet NSArrayController* commitsController;
+	NSString* currentSha;
 	NSString* diff;
 }
 
-- (void) changeContentTo: (id) content;
+- (void) changeContentTo: (PBGitCommit *) content;
 @property (readonly) NSString* diff;
 @end

PBWebGitController.m

@@ -41,13 +41,13 @@
 	}
 }
 
-- (void) changeContentTo: (id) content
+- (void) changeContentTo: (PBGitCommit *) content
 {
-	NSLog(@"Starting Change");
+	if ([currentSha isEqualToString: content.sha])
+		return;
+	currentSha = content.sha;
 	id script = [view windowScriptObject];
 	[script setValue: content forKey:@"CommitObject"];
-	NSLog(@"Done 1");
 	[script callWebScriptMethod:@"doeHet" withArguments: nil];
-	NSLog(@"Change done");
 }
 @end