ti.facebook.login.function.patch

diff --git a/iphone/Classes/FacebookModule.h b/iphone/Classes/FacebookModule.h
index d52bd55..b073a57 100644
--- a/iphone/Classes/FacebookModule.h
+++ b/iphone/Classes/FacebookModule.h
@@ -11,7 +11,7 @@
 #import "FBConnect.h"
 #import "KrollCallback.h"
 
-@interface FacebookModule : TiModule<FBSessionDelegate,FBDialogDelegate,FBRequestDelegate> {
+@interface FacebookModule : TiModule<FBSessionDelegate,FBDialogDelegate,FBRequestDelegate,FBSessionDelegate> {
 @private
 	FBSession *session;
 	FBLoginDialog *dialog;
@@ -56,6 +56,10 @@
 @end
 
 
+@interface FBLoginCallback : FBDialogCallback {
+}
+@end
+
 @interface FBPermissionCallback : FBDialogCallback {
 	NSString *permission;
 }
@@ -70,4 +74,4 @@
 @end
 
 
-#endif
\ No newline at end of file
+#endif
diff --git a/iphone/Classes/FacebookModule.m b/iphone/Classes/FacebookModule.m
index caedea8..97ecea6 100644
--- a/iphone/Classes/FacebookModule.m
+++ b/iphone/Classes/FacebookModule.m
@@ -169,6 +169,54 @@
 
 @end
 
+@implementation FBLoginCallback
+
+- (id)initWithCallback:(KrollCallback*)callback_ module:(FacebookModule*)module_
+{
+	if (self = [super initWithCallback:callback_ module:module_])
+	{
+	  // Nothing
+	}
+	return self;
+}
+
+- (void)dealloc
+{
+	[super dealloc];
+}
+
+- (FBDialog*)newDialog
+{
+	FBLoginDialog *dialog_ = [[FBLoginDialog alloc] init];
+	return dialog_;
+}
+
+- (void)dialogDidSucceed:(FBDialog*)dialog_
+{
+	NSLog(@"[DEBUG] Facebook login dialogDidSucceed");
+	NSDictionary *event = [NSDictionary dictionaryWithObjectsAndKeys:[NSNull null],@"error",[NSNumber numberWithBool:true],@"success",[NSNumber numberWithBool:false],@"cancel",@"login",@"event",nil];
+	[module _fireEventToListener:@"login" withObject:event listener:callback thisObject:nil];
+	[self autorelease];
+}
+
+- (void)dialogDidCancel:(FBDialog*)dialog_
+{
+	NSLog(@"[DEBUG] Facebook login dialogDidCancel");
+	NSDictionary *event = [NSDictionary dictionaryWithObjectsAndKeys:[NSNull null],@"error",[NSNumber numberWithBool:false],@"success",[NSNumber numberWithBool:true],@"cancel",@"login",@"event",nil];
+	[module _fireEventToListener:@"login" withObject:event listener:callback thisObject:nil];
+	[self autorelease];
+}
+
+- (void)dialog:(FBDialog*)dialog_ didFailWithError:(NSError*)error
+{
+	NSLog(@"[ERROR] Facebook login dialog failed with error = %@",[error description]);
+	NSDictionary *event = [NSDictionary dictionaryWithObjectsAndKeys:[error description],@"error",[NSNumber numberWithBool:false],@"success",[NSNumber numberWithBool:false],@"cancel",@"login",@"event",nil];
+	[module _fireEventToListener:@"login" withObject:event listener:callback thisObject:nil];
+	[self autorelease];
+}
+@end
+
+
 @implementation FBPermissionCallback
 
 - (id)initWithCallback:(KrollCallback*)callback_ module:(FacebookModule*)module_ permission:(NSString*) permission_
@@ -348,8 +396,16 @@
 	[lock unlock];
 }	
 
+
 #pragma mark Public APIs
 
+- (void)login:(id)args
+{
+  ENSURE_ARG_COUNT(args, 0);
+  FBLoginCallback *cb = [[FBLoginCallback alloc] initWithCallback:nil module:self];
+  [self performSelectorOnMainThread:@selector(showDialog:) withObject:cb waitUntilDone:NO];
+}
+
 - (void)logout
 {
 	if (session!=nil)
@@ -635,4 +691,4 @@ MAKE_SYSTEM_PROP(LOGIN_BUTTON_STYLE_NORMAL,FBLoginButtonStyleNormal);
 
 @end
 
-#endif
\ No newline at end of file
+#endif