| author | Jens Alfke <jens@mooseyard.com> |
| Sun Apr 06 19:13:27 2008 -0700 (2008-04-06) | |
| changeset 3 | 8fad19466c59 |
| child 11 | e5976864dfe9 |
| permissions | -rw-r--r-- |
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// |
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// ConcurrentOperation.m |
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// MYUtilities |
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// |
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// Created by Jens Alfke on 2/5/08. |
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// Copyright 2008 Jens Alfke. All rights reserved. |
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// |
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#import "ConcurrentOperation.h" |
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// See file:///Developer/Documentation/DocSets/com.apple.ADC_Reference_Library.CoreReference.docset/Contents/Resources/Documents/documentation/Cocoa/Reference/NSOperation_class/Reference/Reference.html#//apple_ref/doc/uid/TP40004591-RH2-DontLinkElementID_4 |
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@implementation ConcurrentOperation |
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- (BOOL) isConcurrent {return YES;}
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- (void) main |
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{
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Assert(NO,@"Shouldn't call -main method of ConcurrentOperation"); |
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} |
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- (BOOL) isExecuting |
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{
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return _isExecuting; |
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} |
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- (BOOL) isFinished |
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{
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return _isFinished; |
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} |
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- (void) start |
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{
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// don't call super! |
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Log(@"Starting %@",self); |
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[self willChangeValueForKey: @"isExecuting"]; |
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_isExecuting = YES; |
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[self didChangeValueForKey: @"isExecuting"]; |
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} |
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- (void) finish |
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{
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Log(@"Finished %@",self); |
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[self willChangeValueForKey: @"isExecuting"]; |
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[self willChangeValueForKey: @"isFinished"]; |
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_isExecuting = NO; |
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_isFinished = YES; |
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[self didChangeValueForKey: @"isFinished"]; |
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[self didChangeValueForKey: @"isExecuting"]; |
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} |
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- (void) cancel |
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{
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Log(@"Canceling %@",self); |
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[super cancel]; |
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if( _isExecuting ) {
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[self willChangeValueForKey: @"isExecuting"]; |
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_isExecuting = NO; |
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[self didChangeValueForKey: @"isExecuting"]; |
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} |
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} |
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@end |