root/Footagehead/trunk/FHHandler.h

/* $Id$ */

/*
 *  Copyright (c) 2003-2007 Axel Andersson
 *  All rights reserved.
 * 
 *  Redistribution and use in source and binary forms, with or without
 *  modification, are permitted provided that the following conditions
 *  are met:
 *  1. Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 *  2. Redistributions in binary form must reproduce the above copyright
 *     notice, this list of conditions and the following disclaimer in the
 *     documentation and/or other materials provided with the distribution.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

@class FHFile;

@interface FHHandler : WIObject {
        NSMutableArray                          *_files;
        WIURL                                           *_url;

        NSImage                                         *_icon;

        id                                                      _delegate;

        NSUInteger                                      _numberOfFiles;
        NSUInteger                                      _numberOfImages;
}


+ (BOOL)handlesURL:(WIURL *)url isPrimary:(BOOL)primary;
+ (BOOL)handlesURLAsDirectory:(WIURL *)url;
+ (Class)handlerForURL:(WIURL *)url;
+ (NSArray *)handlerClasses;

- (id)initHandlerWithURL:(WIURL *)url;

- (void)setDelegate:(id)delegate;
- (id)delegate;

- (NSArray *)files;
- (NSUInteger)numberOfFiles;
- (NSUInteger)numberOfImages;
- (void)removeFile:(FHFile *)file;

- (BOOL)isLocal;
- (BOOL)isSynchronous;
- (BOOL)isFinished;
- (BOOL)hasParent;

- (WIURL *)URL;
- (WIURL *)parentURL;
- (NSArray *)stringComponents;
- (NSArray *)URLComponents;
- (NSImage *)iconForURL:(WIURL *)url;

@end


@interface NSObject(FHHandlerDelegate)

- (void)handlerDidAddFiles:(FHHandler *)handler;
- (void)handlerDidFinishLoading:(FHHandler *)handler;

@end


@interface FHPlaceholderHandler : FHHandler

+ (Class)handler;

@end