CPOperation Class Reference

Represents an operation that can be run in an CPOperationQueue. More...

#import <CPOperation.h>

Inheritance diagram for CPOperation:

Instance Methods
(void)	- addDependency:
(void)	- cancel
(JSObject)	- completionFunction
(CPArray)	- dependencies
(id)	- init
(BOOL)	- isCancelled
(BOOL)	- isConcurrent
(BOOL)	- isExecuting
(BOOL)	- isFinished
(BOOL)	- isReady
(void)	- main
(void)	- observeValueForKeyPath:ofObject:change:context:
(int)	- queuePriority
(void)	- removeDependency:
(void)	- setCompletionFunction:
(void)	- setQueuePriority:
(void)	- start
(void)	- waitUntilFinished
Instance Methods inherited from CPObject
(void)	- addObserver:forKeyPath:options:context:
(void)	- applyChange:toKeyPath:
(id)	- autorelease
(id)	- awakeAfterUsingCoder:
(void)	- awakeFromCib
(void)	- bind:toObject:withKeyPath:options:
(Class)	- classForCoder
(Class)	- classForKeyedArchiver
(CPString)	- className
(id)	- copy
(void)	- dealloc
(CPString)	- description
(CPDictionary)	- dictionaryWithValuesForKeys:
(void)	- didChange:valuesAtIndexes:forKey:
(void)	- didChangeValueForKey:
(void)	- didChangeValueForKey:withSetMutation:usingObjects:
(void)	- doesNotRecognizeSelector:
(CPArray)	- exposedBindings
(id)	- forwardingTargetForSelector:
(void)	- forwardInvocation:
(unsigned)	- hash
(BOOL)	- implementsSelector:
(CPDictionary)	- infoForBinding:
(BOOL)	- isEqual:
(BOOL)	- isKindOfClass:
(BOOL)	- isMemberOfClass:
(BOOL)	- isProxy
(IMP)	- methodForSelector:
(CPMethodSignature)	- methodSignatureForSelector:
(id)	- mutableArrayValueForKey:
(id)	- mutableArrayValueForKeyPath:
(id)	- mutableCopy
(id)	- mutableSetValueForKey:
(id)	- mutableSetValueForKeyPath:
(id)	- performSelector:
(id)	- performSelector:withObject:
(id)	- performSelector:withObject:withObject:
(id)	- performSelector:withObjects:
(void)	- release
(void)	- removeObserver:forKeyPath:
(id)	- replacementObjectForArchiver:
(id)	- replacementObjectForCoder:
(id)	- replacementObjectForKeyedArchiver:
(BOOL)	- respondsToSelector:
(id)	- retain
(id)	- self
(void)	- setValue:forKey:
(void)	- setValue:forKeyPath:
(void)	- setValue:forUndefinedKey:
(void)	- setValuesForKeysWithDictionary:
(CPString)	- UID
(void)	- unbind:
(Class)	- valueClassForBinding:
(id)	- valueForKey:
(id)	- valueForKeyPath:
(id)	- valueForUndefinedKey:
(void)	- willChange:valuesAtIndexes:forKey:
(void)	- willChangeValueForKey:
(void)	- willChangeValueForKey:withSetMutation:usingObjects:

Instance Variables
CPArray	operations
Instance Variables inherited from CPObject
Class	isa

Additional Inherited Members
Class Methods inherited from CPObject
(BOOL)	+ accessInstanceVariablesDirectly
(id)	+ alloc
(id)	+ allocWithCoder:
(BOOL)	+ automaticallyNotifiesObserversForKey:
(Class)	+ class
(void)	+ exposeBinding:
(void)	+ initialize
(IMP)	+ instanceMethodForSelector:
(BOOL)	+ instancesRespondToSelector:
(BOOL)	+ isSubclassOfClass:
(CPSet)	+ keyPathsForValuesAffectingValueForKey:
(void)	+ load
(id)	+ new
(void)	+ setVersion:
(Class)	+ superclass
(int)	+ version

Detailed Description

Represents an operation that can be run in an CPOperationQueue.

It should be subclassed an the subclass should implement its own main method to do the actual work.

Definition at line 2 of file CPOperation.h.

Method Documentation

- (void) addDependency: (CPOperation)  anOperation

implementation

Makes the receiver dependent on the completion of the specified operation.

Parameters

anOperation

the operation that the receiver should depend on

Definition at line 188 of file CPOperation.j.

- (void) cancel

implementation

Advises the operation object that it should stop executing its task.

Definition at line 233 of file CPOperation.j.

- (JSObject) completionFunction

implementation

The JS function that should be run after the main method

Returns

JS function

Definition at line 171 of file CPOperation.j.

- (CPArray) dependencies

implementation

The operations that the receiver depends on

Returns

array of operations

Definition at line 218 of file CPOperation.j.

- (id) init

implementation

Initializes the receiver

Returns

the initialized receiver

Reimplemented from CPObject.

Reimplemented in CPFunctionOperation, and CPInvocationOperation.

Definition at line 82 of file CPOperation.j.

- (BOOL) isCancelled

implementation

Indicates if this operation has been cancelled

Returns

if this operation has been cancelled

Definition at line 126 of file CPOperation.j.

- (BOOL) isConcurrent

implementation

Just added for Cocoa compatibility

Returns

always false

Definition at line 153 of file CPOperation.j.

- (BOOL) isExecuting

implementation

Indicates if this operation is currently executing

Returns

if this operation is currently executing

Definition at line 135 of file CPOperation.j.

- (BOOL) isFinished

implementation

Indicates if this operation has finished running

Returns

if this operation has finished running

Definition at line 144 of file CPOperation.j.

- (BOOL) isReady

implementation

Indicates if this operation is ready to be executed. Takes the "isFinished" state of dependent operations into account

Returns

if this operation is ready to run

Definition at line 162 of file CPOperation.j.

- (void) main

implementation

Reimplemented in CPFunctionOperation, and CPInvocationOperation.

Definition at line 77 of file CPOperation.j.

- (void) observeValueForKeyPath: (CPString)  keyPath ofObject: (id)  object change: (CPDictionary)  change context: (void)  context

implementation

Definition at line 259 of file CPOperation.j.

- (int) queuePriority

implementation

The priority of the operation when used in an operation queue.

Returns

the priority

Definition at line 253 of file CPOperation.j.

- (void) removeDependency: (CPOperation)  anOperation

implementation

Removes the receiver’s dependence on the specified operation.

Parameters

anOperation

the operation that the receiver should no longer depend on

Definition at line 204 of file CPOperation.j.

- (void) setCompletionFunction: (JSObject)  aJavaScriptFunction

implementation

Sets the JS function that should be run after the main method

Definition at line 179 of file CPOperation.j.

- (void) setQueuePriority: (int)  priority

implementation

Sets the priority of the operation when used in an operation queue.

Parameters

priority

the priority

Definition at line 244 of file CPOperation.j.

- (void) start

implementation

Starts the operation (runs the main method), sets all the status flags and runs the completion function if it's set

Definition at line 101 of file CPOperation.j.

- (void) waitUntilFinished

implementation

Just added for Cocoa compatibility, doesn't do anything

Definition at line 226 of file CPOperation.j.

Instance Variable Documentation

- (CPArray) operations

protected

Definition at line 4 of file CPOperation.h.

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The documentation for this class was generated from the following files:

• Foundation/CPOperation.h
• Foundation/CPOperation.j