/MapView/Map/RMWebTileImage.h

 1//
 2//  RMWebTileImage.h
 3//
 4// Copyright (c) 2008-2009, Route-Me Contributors
 5// All rights reserved.
 6//
 7// Redistribution and use in source and binary forms, with or without
 8// modification, are permitted provided that the following conditions are met:
 9//
10// * Redistributions of source code must retain the above copyright notice, this
11//   list of conditions and the following disclaimer.
12// * Redistributions in binary form must reproduce the above copyright notice,
13//   this list of conditions and the following disclaimer in the documentation
14//   and/or other materials provided with the distribution.
15//
16// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
17// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
20// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
21// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
22// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
23// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
24// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
25// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
26// POSSIBILITY OF SUCH DAMAGE.
27
28#import <Foundation/Foundation.h>
29#import "RMTileImage.h"
30
31#import "RMURLConnectionOperation.h"
32
33static const NSUInteger kWebTileRetries = 30;
34static const NSUInteger kMaxConcurrentConnections = 5;
35
36extern NSString *RMWebTileImageErrorDomain;
37
38extern NSString *RMWebTileImageHTTPResponseCodeKey;
39enum {
40    RMWebTileImageErrorUnexpectedHTTPResponse,
41    RMWebTileImageErrorZeroLengthResponse,
42    RMWebTileImageErrorNotFoundResponse
43};
44
45extern NSString *RMWebTileImageNotificationErrorKey;
46
47
48
49/// RMTileImage subclass: a tile image loaded from a URL.
50@interface RMWebTileImage : RMTileImage {
51    NSUInteger retries;
52    NSError *lastError;
53
54	NSURL *url;
55    RMURLConnectionOperation *connectionOp;
56
57	NSMutableData *data;
58}
59
60- (id)initWithTile:(RMTile)tile FromURL:(NSString*)url;
61
62@end