#import "ITKeyBroadcaster.h"
#import "ITKeyCombo.h"
#import <Carbon/Carbon.h>

NSString *ITKeyBroadcasterKeyEvent = @"ITKeyBroadcasterKeyEvent";

@implementation ITKeyBroadcaster

- (void)_bcastKeyCode:(short)keyCode modifiers:(long)modifiers {
	ITKeyCombo *keyCombo = [ITKeyCombo keyComboWithKeyCode:keyCode modifiers:modifiers];
	NSDictionary *userInfo = [NSDictionary dictionaryWithObject:keyCombo forKey:@"keyCombo"];
	
	[[NSNotificationCenter defaultCenter] postNotificationName:ITKeyBroadcasterKeyEvent object:self userInfo:userInfo];
}

- (void)_bcastEvent:(NSEvent *)event {
	short keyCode;
	long modifiers;
	
	keyCode = [event keyCode];
	modifiers = [event modifierFlags];
	modifiers = [[self class] cocoaModifiersAsCarbonModifiers:modifiers];
	
	[self _bcastKeyCode:keyCode modifiers:modifiers];
}

- (void)keyDown:(NSEvent *)event {
	[self _bcastEvent:event];
}

- (BOOL)performKeyEquivalent:(NSEvent *)event {
	[self _bcastEvent:event];
	return YES;
}

+ (long)cocoaModifiersAsCarbonModifiers:(long)cocoaModifiers {
	static long cocoaToCarbon[6][2] = {
		{ NSCommandKeyMask, cmdKey },
		{ NSAlternateKeyMask, optionKey },
		{ NSControlKeyMask, controlKey },
		{ NSShiftKeyMask, shiftKey },
		{ NSFunctionKeyMask, rightControlKey },
		//{ NSAlphaShiftKeyMask, alphaLock }, //Ignore this?
	};
	
	long carbonModifiers = 0;
	int i;
	
	for (i = 0;i < 6;i++) {
		if (cocoaModifiers & cocoaToCarbon[i][0]) {
			carbonModifiers += cocoaToCarbon[i][1];
		}
	}
	
	return carbonModifiers;
}

@end