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CPInvocationOperation.j
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CPInvocationOperation.j
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/*
* CPInvocationOperation.j
*
* Created by Johannes Fahrenkrug.
* Copyright 2009, Springenwerk.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
@import "CPInvocation.j"
@import "CPObject.j"
@import "CPOperation.j"
/*!
@class CPInvocationOperation
@brief Represents an operation using an invocation that can be run in an CPOperationQueue
*/
@implementation CPInvocationOperation : CPOperation
{
CPInvocation _invocation;
}
- (void)main
{
if (_invocation)
{
[_invocation invoke];
}
}
- (id)init
{
if (self = [super init])
{
_invocation = nil;
}
return self;
}
/*!
Returns a CPInvocationOperation object initialized with the specified invocation object.
@param inv the invocation
*/
- (id)initWithInvocation:(CPInvocation)inv
{
if (self = [self init])
{
_invocation = inv;
}
return self;
}
/*!
Returns a CPInvocationOperation object initialized with the specified target and selector.
@param target the target
@param sel the selector that should be called on the target
@param arg the arguments
*/
- (id)initWithTarget:(id)target selector:(SEL)sel object:(id)arg
{
var inv = [[CPInvocation alloc] initWithMethodSignature:nil];
[inv setTarget:target];
[inv setSelector:sel];
[inv setArgument:arg atIndex:2];
return [self initWithInvocation:inv];
}
/*!
Returns the receiver’s invocation object.
*/
- (CPInvocation)invocation
{
return _invocation;
}
/*!
Returns the result of the invocation or method.
*/
- (id)result
{
if ([self isFinished] && _invocation)
{
return [_invocation returnValue];
}
return nil;
}
@end