//

//  AIDefaultFontRemoval.m

//  Adium

//

//  Created by Zachary West on 2009-10-28.

//  Copyright 2009  . All rights reserved.

//

#import "AIDefaultFontRemovalPlugin.h"

#import <AIUtilities/AIFontAdditions.h>

#import <AIUtilities/AIColorAdditions.h>

@implementation AIDefaultFontRemovalPlugin

- (void)installPlugin

{

	// We only monitor outgoing messages.

	[adium.contentController registerContentFilter:self ofType:AIFilterContent direction:AIFilterOutgoing];	

}

- (void)uninstallPlugin

{

	[adium.contentController unregisterContentFilter:self];

}

- (void)dealloc

{

	[defaultRemovedAttributes release];

	[super dealloc];

}

- (NSAttributedString *)filterAttributedString:(NSAttributedString *)inAttributedString context:(id)context

{

	if (!inAttributedString || ![inAttributedString length]) return inAttributedString;

	NSMutableAttributedString *mutableString = [inAttributedString mutableCopy];

	if (!defaultRemovedAttributes) {

		NSFont *defaultFont = [[adium.preferenceController defaultPreferenceForKey:KEY_FORMATTING_FONT

																			 group:PREF_GROUP_FORMATTING

																			object:nil] representedFont];

		defaultRemovedAttributes = [[NSDictionary dictionaryWithObjectsAndKeys:

									 defaultFont, NSFontAttributeName,

									 [NSColor colorWithCalibratedRed:1.0 green:1.0 blue:1.0 alpha:1.0], NSBackgroundColorAttributeName,

									 nil] retain];

	}

	for (NSString *attributeName in defaultRemovedAttributes.allKeys) {

		NSUInteger position = 0;

		while (position < mutableString.length) {

			NSRange attributeRange;

			id attributeValue = [mutableString attribute:attributeName

												 atIndex:position

										  effectiveRange:&attributeRange];

			if (attributeValue && [attributeValue isEqualTo:[defaultRemovedAttributes objectForKey:attributeName]]) {

				[mutableString removeAttribute:attributeName range:attributeRange];

			}

			position += attributeRange.length;

		}

	}

	return [mutableString autorelease];

}

/*!

 * @brief When should this run?

 *

 * We want this font removal to occur as early as possible, in case any other filters try and modify the fonts.

 */

- (CGFloat)filterPriority

{

	return HIGHEST_FILTER_PRIORITY;

}

@end