-
Notifications
You must be signed in to change notification settings - Fork 3
/
listing11.html
executable file
·398 lines (340 loc) · 15.3 KB
/
listing11.html
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/1999/REC-html401-19991224/loose.dtd">
<html>
<head>
<!-- BEGIN META TAG INFO -->
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<link rel="home" href="http://developer.apple.com/">
<link rel="find" href="http://developer.apple.com/search/">
<link rel="stylesheet" type="text/css" href="../../documentation/css/adcstyle.css" title="fonts">
<script language="JavaScript" src="../../documentation/js/adc.js" type="text/javascript"></script>
<!-- END META TAG INFO -->
<!-- BEGIN TITLE -->
<title>CocoaSlides - /Model/AssetCollection.m</title>
<!-- END TITLE -->
<script language="JavaScript">
function JumpToNewPage() {
window.location=document.scpopupmenu.gotop.value;
return true;
}
</script>
</head>
<!-- BEGIN BODY OPEN -->
<body>
<!--END BODY OPEN -->
<!-- START CENTER OPEN -->
<center>
<!-- END CENTER OPEN -->
<!-- BEGIN LOGO AND SEARCH -->
<!--#include virtual="/includes/adcnavbar"-->
<!-- END LOGO AND SEARCH -->
<!-- START BREADCRUMB -->
<div id="breadcrumb">
<table width="680" border="0" cellpadding="0" cellspacing="0">
<tr>
<td scope="row"><img width="340" height="10" src="images/1dot.gif" alt=""></td>
<td><img width="340" height="10" src="images/1dot.gif" alt=""></td>
</tr>
<tr valign="middle">
<td align="left" colspan="2">
<a href="http://developer.apple.com/">ADC Home</a> > <a href="../../referencelibrary/index.html">Reference Library</a> > <a href="../../samplecode/index.html">Sample Code</a> > <a href="../../samplecode/Cocoa/index.html">Cocoa</a> > <a href="../../samplecode/Cocoa/idxGraphicsImaging-date.html">Graphics & Imaging</a> > <A HREF="javascript:location.replace('index.html');">CocoaSlides</A> >
</td>
</tr>
<tr>
<td colspan="2" scope="row"><img width="680" height="35" src="images/1dot.gif" alt=""></td>
</tr>
</table>
</div>
<!-- END BREADCRUMB -->
<!-- START MAIN CONTENT -->
<!-- START TITLE GRAPHIC AND INTRO-->
<table width="680" border="0" cellpadding="0" cellspacing="0">
<tr align="left" valign="top">
<td><h1><div id="pagehead">CocoaSlides</div></h1></td>
</tr>
</table>
<!-- END TITLE GRAPHIC AND INTRO -->
<!-- START WIDE COLUMN -->
<table width="680" border="0" cellpadding="0" cellspacing="0">
<tr align="left" valign="top">
<td id="scdetails">
<h2>/Model/AssetCollection.m</h2>
<form name="scpopupmenu" onSubmit="return false;" method=post>
<p><strong>View Source Code:</strong>
<select name="gotop" onChange="JumpToNewPage();" style="width:340px"><option selected value="ingnore">Select File</option>
<option value="listing1.html">/Controller/BrowserWindowController.h</option>
<option value="listing2.html">/Controller/BrowserWindowController.m</option>
<option value="listing3.html">/Controller/MainController.h</option>
<option value="listing4.html">/Controller/MainController.m</option>
<option value="listing5.html">/Controller/SlideshowWindowController.h</option>
<option value="listing6.html">/Controller/SlideshowWindowController.m</option>
<option value="listing7.html">/main.m</option>
<option value="listing8.html">/Model/Asset.h</option>
<option value="listing9.html">/Model/Asset.m</option>
<option value="listing10.html">/Model/AssetCollection.h</option>
<option value="listing11.html">/Model/AssetCollection.m</option>
<option value="listing12.html">/Model/ImageAsset.h</option>
<option value="listing13.html">/Model/ImageAsset.m</option>
<option value="listing14.html">/Support/NSImage+Conversion.h</option>
<option value="listing15.html">/Support/NSImage+Conversion.m</option>
<option value="listing16.html">/View/AssetCollectionView.h</option>
<option value="listing17.html">/View/AssetCollectionView.m</option>
<option value="listing18.html">/View/AssetCollectionViewNode.h</option>
<option value="listing19.html">/View/AssetCollectionViewNode.m</option>
<option value="listing20.html">/View/SlideCarrierView.h</option>
<option value="listing21.html">/View/SlideCarrierView.m</option>
<option value="listing22.html">/View/SlideImageView.h</option>
<option value="listing23.html">/View/SlideImageView.m</option>
<option value="listing24.html">/View/SlideshowView.h</option>
<option value="listing25.html">/View/SlideshowView.m</option>
<option value="listing26.html">/View/ViewLayout.h</option>
<option value="listing27.html">/View/ViewLayout.m</option></select>
</p>
</form>
<p><strong><a href="CocoaSlides.zip">Download Sample</a></strong> (“CocoaSlides.zip”, 592.8K)<BR>
<strong><a href="CocoaSlides.dmg">Download Sample</a></strong> (“CocoaSlides.dmg”, 645.3K)</p>
<!--
<p><strong><a href="#">Download Sample</a></strong> (“filename.sit”, 500K)</p>
-->
</td>
</tr>
<tr>
<td scope="row"><img width="680" height="10" src="images/1dot.gif" alt=""><br>
<img height="1" width="680" src="images/1dot_919699.gif" alt=""><br>
<img width="680" height="20" src="images/1dot.gif" alt=""></td>
</tr>
<tr>
<td scope="row">
<!--googleon: index -->
<pre class="sourcecodebox">/*
File: AssetCollection.m
Abstract: Asset Collection Model Class for CocoaSlides
Version: 1.4
Disclaimer: IMPORTANT: This Apple software is supplied to you by Apple
Computer, Inc. ("Apple") in consideration of your agreement to the
following terms, and your use, installation, modification or
redistribution of this Apple software constitutes acceptance of these
terms. If you do not agree with these terms, please do not use,
install, modify or redistribute this Apple software.
In consideration of your agreement to abide by the following terms, and
subject to these terms, Apple grants you a personal, non-exclusive
license, under Apple's copyrights in this original Apple software (the
"Apple Software"), to use, reproduce, modify and redistribute the Apple
Software, with or without modifications, in source and/or binary forms;
provided that if you redistribute the Apple Software in its entirety and
without modifications, you must retain this notice and the following
text and disclaimers in all such redistributions of the Apple Software.
Neither the name, trademarks, service marks or logos of Apple Computer,
Inc. may be used to endorse or promote products derived from the Apple
Software without specific prior written permission from Apple. Except
as expressly stated in this notice, no other rights or licenses, express
or implied, are granted by Apple herein, including but not limited to
any patent rights that may be infringed by your derivative works or by
other works in which the Apple Software may be incorporated.
The Apple Software is provided by Apple on an "AS IS" basis. APPLE
MAKES NO WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION
THE IMPLIED WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS
FOR A PARTICULAR PURPOSE, REGARDING THE APPLE SOFTWARE OR ITS USE AND
OPERATION ALONE OR IN COMBINATION WITH YOUR PRODUCTS.
IN NO EVENT SHALL APPLE BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL
OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) ARISING IN ANY WAY OUT OF THE USE, REPRODUCTION,
MODIFICATION AND/OR DISTRIBUTION OF THE APPLE SOFTWARE, HOWEVER CAUSED
AND WHETHER UNDER THEORY OF CONTRACT, TORT (INCLUDING NEGLIGENCE),
STRICT LIABILITY OR OTHERWISE, EVEN IF APPLE HAS BEEN ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
Copyright © 2006 Apple Computer, Inc., All Rights Reserved
*/
#import "AssetCollection.h"
#import "Asset.h"
#import "ImageAsset.h"
@interface AssetCollection (Internals)
- (Asset *)assetForFilename:(NSString *)filename;
- (NSArray *)findAssetFilesInRootURL;
@end
@implementation AssetCollection
- initWithRootURL:(NSURL *)newRootURL {
self = [super init];
if (self) {
rootURL = [newRootURL retain];
assets = [[NSMutableArray alloc] init];
previewImagePixelsPerSide = 80;
}
return self;
}
- (void)dealloc {
[rootURL release];
[assets release];
[super dealloc];
}
- (NSURL *)rootURL {
return rootURL;
}
- (NSArray *)assets {
return [[assets retain] autorelease];
}
- (void)setAssets:(NSArray *)newAssets {
if (assets != newAssets) {
id old = assets;
assets = [newAssets mutableCopy];
[old release];
}
}
- (void)insertObject:(id)obj inAssetsAtIndex:(NSUInteger)index {
[assets insertObject:obj atIndex:index];
}
- (void)removeObjectFromAssetsAtIndex:(NSUInteger)index {
[assets removeObjectAtIndex:index];
}
- (NSInteger)previewImagePixelsPerSide {
return previewImagePixelsPerSide;
}
#pragma mark *** Background Update Control ***
- (void)refreshInBackgroundThread:(id)unusedObject {
NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
// Get a list of all the possible image files in root directory.
NSArray *assetFiles = [self findAssetFilesInRootURL];
// Identify three groups of image files:
// (1) files that are in the catalog, but have since changed (the file's modification date is later than its last-cached date)
// (2) files that exist on disk but are not yet in the catalog (presumably the file was added and we should create a catalog entry for it)
// (3) files that exist in the catalog but not on disk (presumably the file was deleted and we should remove the corresponding catalog entry)
NSMutableArray *assetsToProcess = [[self assets] mutableCopy];
Asset *asset;
NSMutableArray *assetsChanged = [NSMutableArray array];
NSMutableArray *filesAdded = [NSMutableArray array];
NSMutableArray *assetsRemoved = [NSMutableArray array];
NSFileManager *fileManager = [NSFileManager defaultManager];
NSString *rootPath = [[self rootURL] path];
NSEnumerator *fileEnumerator = [assetFiles objectEnumerator];
NSString *filename;
while (filename = [fileEnumerator nextObject]) {
// Get full path to file.
NSString *path = [rootPath stringByAppendingPathComponent:filename];
// Look for a corresponding entry in the catalog.
asset = [self assetForFilename:filename];
if (asset != nil) {
// Check whether file has changed.
NSDictionary *fileAttributes = [fileManager fileAttributesAtPath:path traverseLink:YES];
if (fileAttributes != nil) {
// Get file's modification date.
NSDate *fileModificationDate = [fileAttributes objectForKey:NSFileModificationDate];
if ([fileModificationDate compare:[asset dateLastUpdated]] == NSOrderedDescending) {
[assetsChanged addObject:asset];
}
} else {
// NOTE: This shouldn't ever really happen, unless the file was deleted between our initial scan and getting to the file attribute check, but just in case, allow for the file to have been removed in that interval.
[assetsRemoved addObject:asset];
}
// We've dealt with this catalogImage instance.
[assetsToProcess removeObject:asset];
} else {
// File was added.
[filesAdded addObject:filename];
}
}
// Check for images in the catalog for which no corresponding file was found.
[assetsRemoved addObjectsFromArray:assetsToProcess];
[assetsToProcess release];
assetsToProcess = nil;
// Remove assets to be removed.
NSEnumerator *assetEnumerator = [assetsRemoved objectEnumerator];
while (asset = [assetEnumerator nextObject]) {
[self performSelectorOnMainThread:@selector(removeAsset:) withObject:asset waitUntilDone:YES];
}
// Add assets to be added.
fileEnumerator = [filesAdded objectEnumerator];
while (filename = [fileEnumerator nextObject]) {
NSURL *assetURL = [NSURL URLWithString:[filename stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding] relativeToURL:[self rootURL]];
NSString *extension = [filename pathExtension];
Asset *asset = nil;
if ([[ImageAsset fileTypes] containsObject:extension]) {
asset = [[ImageAsset alloc] initWithURL:assetURL];
}
if (asset != nil) {
[self performSelectorOnMainThread:@selector(addAsset:) withObject:asset waitUntilDone:YES];
[asset release];
asset = nil;
}
}
[pool release];
inRefresh = NO;
}
- (void)startRefresh {
if (!inRefresh) {
inRefresh = YES;
[NSThread detachNewThreadSelector:@selector(refreshInBackgroundThread:) toTarget:self withObject:nil];
}
}
#pragma mark *** Main Thread Callback Points ***
- (void)addAsset:(Asset *)asset {
[self insertObject:asset inAssetsAtIndex:[assets count]];
}
- (void)removeAsset:(Asset *)asset {
NSUInteger index = [assets indexOfObject:asset];
if (index != NSNotFound) {
[self removeObjectFromAssetsAtIndex:index];
}
}
@end
@implementation AssetCollection (Internals)
- (Asset *)assetForFilename:(NSString *)filename {
// (Use of a dictionary or other more search-efficient construct would speed this up.)
for (Asset *asset in [self assets]) {
if ([filename isEqualToString:[asset filename]]) {
return asset;
}
}
return nil;
}
- (NSArray *)findAssetFilesInRootURL {
NSString *rootPath = [[self rootURL] path];
NSFileManager *fileManager = [NSFileManager defaultManager];
NSArray *possibleAssetFiles = [fileManager directoryContentsAtPath:rootPath];
NSArray *supportedAssetFileTypes = [ImageAsset fileTypes];
NSMutableArray *assetFiles = [NSMutableArray array];
for (NSString *filename in possibleAssetFiles) {
// (In a real-world application, if we have a filename with no extension, we should be prepared to check the file's HFS type code or other identifying metadata here.)
if ([supportedAssetFileTypes containsObject:[filename pathExtension]]) {
[assetFiles addObject:filename];
}
}
return assetFiles;
}
@end
</pre>
<!--googleoff: index -->
</td>
</tr>
</table>
<!-- END WIDE COLUMN -->
<!-- END MAIN CONTENT -->
<table width="680" border="0" cellpadding="0" cellspacing="0">
<tr>
<td><div style="width: 100%; height: 1px; background-color: #919699; margin-top: 5px; margin-bottom: 15px"></div></td>
</tr>
<tr>
<td align="center"><br/>
<table border="0" cellpadding="0" cellspacing="0" class="graybox">
<tr>
<th>Did this document help you?</th>
</tr>
<tr>
<td>
<div style="margin-bottom: 8px"><a href="http://developer.apple.com/feedback/?v=1&url=/samplecode/CocoaSlides/listing11.html%3Fid%3DDTS10004072-2.1&media=dvd" target=_new>Yes</a>: Tell us what works for you.</div>
<div style="margin-bottom: 8px"><a href="http://developer.apple.com/feedback/?v=2&url=/samplecode/CocoaSlides/listing11.html%3Fid%3DDTS10004072-2.1&media=dvd" target=_new>It’s good, but:</a> Report typos, inaccuracies, and so forth.</div>
<div><a href="http://developer.apple.com/feedback/?v=3&url=/samplecode/CocoaSlides/listing11.html%3Fid%3DDTS10004072-2.1&media=dvd" target=_new>It wasn’t helpful</a>: Tell us what would have helped.</div>
</td>
</tr>
</table>
</td>
</tr>
</table>
<!-- START BOTTOM APPLE NAVIGATION -->
<!--#include virtual="/includes/footer"-->
<!-- END BOTTOM APPLE NAVIGATION -->
<!-- START CENTER CLOSE -->
</center>
<!-- END CENTER CLOSE -->
</body>
</html>