Source/ThreadSafeDeleage.m

   1 /*
   2  * MacGDBp
   3  * Copyright (c) 2013, Blue Static <http://www.bluestatic.org>
   4  *
   5  * This program is free software; you can redistribute it and/or modify it under the terms of the GNU
   6  * General Public License as published by the Free Software Foundation; either version 2 of the
   7  * License, or (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without
  10  * even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  11  * General Public License for more details.
  12  *
  13  * You should have received a copy of the GNU General Public License along with this program; if not,
  14  * write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
  15  */
  16
  17 #import "ThreadSafeDeleage.h"
  18
  19 @implementation ThreadSafeDeleage {
  20   NSObject* _object;
  21   Protocol* _protocol;
  22   NSThread* _thread;
  23   NSArray* _modes;
  24 }
  25
  26 @synthesize object = _object;
  27
  28 - (id)initWithObject:(NSObject*)object
  29             protocol:(Protocol*)protocol
  30               thread:(NSThread*)thread {
  31   return [self initWithObject:object
  32                      protocol:protocol
  33                        thread:thread
  34                         modes:@[ NSRunLoopCommonModes ]];
  35 }
  36
  37 - (id)initWithObject:(NSObject*)object
  38             protocol:(Protocol*)protocol
  39               thread:(NSThread*)thread
  40                modes:(NSArray*)runLoopModes {
  41   if ((self = [super init])) {
  42     _object = object;
  43     _protocol = protocol;
  44     _thread = thread;
  45     _modes = [runLoopModes retain];
  46   }
  47   return self;
  48 }
  49
  50 - (void)dealloc {
  51   [_modes release];
  52   [super dealloc];
  53 }
  54
  55 - (BOOL)conformsToProtocol:(Protocol*)protocol {
  56   return [_protocol isEqual:protocol];
  57 }
  58
  59 - (NSMethodSignature*)methodSignatureForSelector:(SEL)aSelector {
  60   if (!_object)
  61     return [_protocol methodSignatureForSelector:aSelector];
  62   return [_object methodSignatureForSelector:aSelector];
  63 }
  64
  65 - (BOOL)respondsToSelector:(SEL)aSelector {
  66   if (!_object)
  67     return [_protocol respondsToSelector:aSelector];
  68   return [_object respondsToSelector:aSelector];
  69 }
  70
  71 - (void)forwardInvocation:(NSInvocation*)invocation {
  72   if ([_object respondsToSelector:[invocation selector]]) {
  73     [invocation retainArguments];
  74     [self performSelector:@selector(dispatchInvocation:)
  75                  onThread:_thread
  76                withObject:invocation
  77             waitUntilDone:NO
  78                     modes:_modes];
  79   }
  80 }
  81
  82 - (void)dispatchInvocation:(NSInvocation*)invocation {
  83   [invocation invokeWithTarget:_object];
  84 }
  85
  86 @end