Struct NSTask 

pub struct NSTask { /* private fields */ }

Available on crate feature NSTask only.

Apple’s documentation

Implementations

impl NSTask

pub fn init(this: Allocated<Self>) -> Retained<Self>

pub fn executableURL(&self) -> Option<Retained<NSURL>>

Available on crate feature NSURL only.

pub fn setExecutableURL(&self, executable_url: Option<&NSURL>)

Available on crate feature NSURL only.

Setter for executableURL.

This is copied when set.

pub fn arguments(&self) -> Option<Retained<NSArray<NSString>>>

Available on crate features NSArray and NSString only.

pub fn setArguments(&self, arguments: Option<&NSArray<NSString>>)

Available on crate features NSArray and NSString only.

Setter for arguments.

This is copied when set.

pub fn environment(&self) -> Option<Retained<NSDictionary<NSString, NSString>>>

Available on crate features NSDictionary and NSString only.

pub fn setEnvironment( &self, environment: Option<&NSDictionary<NSString, NSString>>, )

Available on crate features NSDictionary and NSString only.

Setter for environment.

This is copied when set.

pub fn currentDirectoryURL(&self) -> Option<Retained<NSURL>>

Available on crate feature NSURL only.

pub fn setCurrentDirectoryURL(&self, current_directory_url: Option<&NSURL>)

Available on crate feature NSURL only.

Setter for currentDirectoryURL.

This is copied when set.

pub fn launchRequirementData(&self) -> Option<Retained<NSData>>

Available on crate feature NSData only.

pub fn setLaunchRequirementData(&self, launch_requirement_data: Option<&NSData>)

Available on crate feature NSData only.

Setter for launchRequirementData.

This is copied when set.

pub fn standardInput(&self) -> Option<Retained<AnyObject>>

pub unsafe fn setStandardInput(&self, standard_input: Option<&AnyObject>)

Setter for standardInput.

Safety

standard_input should be of the correct type.

pub fn standardOutput(&self) -> Option<Retained<AnyObject>>

pub unsafe fn setStandardOutput(&self, standard_output: Option<&AnyObject>)

Setter for standardOutput.

Safety

standard_output should be of the correct type.

pub fn standardError(&self) -> Option<Retained<AnyObject>>

pub unsafe fn setStandardError(&self, standard_error: Option<&AnyObject>)

Setter for standardError.

Safety

standard_error should be of the correct type.

pub fn launchAndReturnError(&self) -> Result<(), Retained<NSError>>

Available on crate feature NSError only.

pub fn interrupt(&self)

pub fn terminate(&self)

pub fn suspend(&self) -> bool

pub fn resume(&self) -> bool

pub fn processIdentifier(&self) -> c_int

pub fn isRunning(&self) -> bool

pub fn terminationStatus(&self) -> c_int

pub fn terminationReason(&self) -> NSTaskTerminationReason

pub unsafe fn terminationHandler( &self, ) -> *mut DynBlock<dyn Fn(NonNull<NSTask>)>

Available on crate feature block2 only.

Safety

The returned block must be sendable.

pub unsafe fn setTerminationHandler( &self, termination_handler: Option<&DynBlock<dyn Fn(NonNull<NSTask>)>>, )

Available on crate feature block2 only.

Setter for terminationHandler.

This is copied when set.

Safety

termination_handler block must be sendable.

pub fn qualityOfService(&self) -> NSQualityOfService

Available on crate feature NSObjCRuntime only.

pub fn setQualityOfService(&self, quality_of_service: NSQualityOfService)

Available on crate feature NSObjCRuntime only.

Setter for qualityOfService.

impl NSTask

Methods declared on superclass NSObject.

pub fn new() -> Retained<Self>

impl NSTask

NSTaskConveniences.

pub unsafe fn launchedTaskWithExecutableURL_arguments_error_terminationHandler( url: &NSURL, arguments: &NSArray<NSString>, error: Option<&mut Option<Retained<NSError>>>, termination_handler: Option<&DynBlock<dyn Fn(NonNull<NSTask>)>>, ) -> Option<Retained<NSTask>>

Available on crate features NSArray and NSError and NSString and NSURL and block2 only.

Safety

termination_handler block must be sendable.

pub fn waitUntilExit(&self)

impl NSTask

NSDeprecated.

pub fn launchPath(&self) -> Option<Retained<NSString>>

👎Deprecated

Available on crate feature NSString only.

pub fn setLaunchPath(&self, launch_path: Option<&NSString>)

👎Deprecated

Available on crate feature NSString only.

Setter for launchPath.

This is copied when set.

pub fn currentDirectoryPath(&self) -> Retained<NSString>

👎Deprecated

Available on crate feature NSString only.

pub fn setCurrentDirectoryPath(&self, current_directory_path: &NSString)

👎Deprecated

Available on crate feature NSString only.

Setter for currentDirectoryPath.

This is copied when set.

pub fn launch(&self)

👎Deprecated

pub fn launchedTaskWithLaunchPath_arguments( path: &NSString, arguments: &NSArray<NSString>, ) -> Retained<NSTask>

👎Deprecated

Available on crate features NSArray and NSString only.

Methods from Deref<Target = NSObject>

pub fn doesNotRecognizeSelector(&self, sel: Sel) -> !

Handle messages the object doesn’t recognize.

See Apple’s documentation for details.

Methods from Deref<Target = AnyObject>

pub fn class(&self) -> &'static AnyClass

Dynamically find the class of this object.

Panics

May panic if the object is invalid (which may be the case for objects returned from unavailable init/new methods).

Example

Check that an instance of NSObject has the precise class NSObject.

use objc2::ClassType;
use objc2::runtime::NSObject;

let obj = NSObject::new();
assert_eq!(obj.class(), NSObject::class());

pub unsafe fn get_ivar<T>(&self, name: &str) -> &T

where T: Encode,

👎Deprecated: this is difficult to use correctly, use Ivar::load instead.

Use Ivar::load instead.

Safety

The object must have an instance variable with the given name, and it must be of type T.

See Ivar::load_ptr for details surrounding this.

pub fn downcast_ref<T>(&self) -> Option<&T>

where T: DowncastTarget,

Attempt to downcast the object to a class of type T.

This is the reference-variant. Use Retained::downcast if you want to convert a retained object to another type.

Mutable classes

Some classes have immutable and mutable variants, such as NSString and NSMutableString.

When some Objective-C API signature says it gives you an immutable class, it generally expects you to not mutate that, even though it may technically be mutable “under the hood”.

So using this method to convert a NSString to a NSMutableString, while not unsound, is generally frowned upon unless you created the string yourself, or the API explicitly documents the string to be mutable.

See Apple’s documentation on mutability and on isKindOfClass: for more details.

Generic classes

Objective-C generics are called “lightweight generics”, and that’s because they aren’t exposed in the runtime. This makes it impossible to safely downcast to generic collections, so this is disallowed by this method.

You can, however, safely downcast to generic collections where all the type-parameters are AnyObject.

Panics

This works internally by calling isKindOfClass:. That means that the object must have the instance method of that name, and an exception will be thrown (if CoreFoundation is linked) or the process will abort if that is not the case. In the vast majority of cases, you don’t need to worry about this, since both root objects NSObject and NSProxy implement this method.

Examples

Cast an NSString back and forth from NSObject.

use objc2::rc::Retained;
use objc2_foundation::{NSObject, NSString};

let obj: Retained<NSObject> = NSString::new().into_super();
let string = obj.downcast_ref::<NSString>().unwrap();
// Or with `downcast`, if we do not need the object afterwards
let string = obj.downcast::<NSString>().unwrap();

Try (and fail) to cast an NSObject to an NSString.

use objc2_foundation::{NSObject, NSString};

let obj = NSObject::new();
assert!(obj.downcast_ref::<NSString>().is_none());

Try to cast to an array of strings.

use objc2_foundation::{NSArray, NSObject, NSString};

let arr = NSArray::from_retained_slice(&[NSObject::new()]);
// This is invalid and doesn't type check.
let arr = arr.downcast_ref::<NSArray<NSString>>();

This fails to compile, since it would require enumerating over the array to ensure that each element is of the desired type, which is a performance pitfall.

Downcast when processing each element instead.

use objc2_foundation::{NSArray, NSObject, NSString};

let arr = NSArray::from_retained_slice(&[NSObject::new()]);

for elem in arr {
    if let Some(data) = elem.downcast_ref::<NSString>() {
        // handle `data`
    }
}

Trait Implementations

impl AsRef<AnyObject> for NSTask

fn as_ref(&self) -> &AnyObject

Converts this type into a shared reference of the (usually inferred) input type.

impl AsRef<NSObject> for NSTask

fn as_ref(&self) -> &NSObject

Converts this type into a shared reference of the (usually inferred) input type.

impl AsRef<NSTask> for NSTask

fn as_ref(&self) -> &Self

Converts this type into a shared reference of the (usually inferred) input type.

impl Borrow<AnyObject> for NSTask

fn borrow(&self) -> &AnyObject

Immutably borrows from an owned value.

impl Borrow<NSObject> for NSTask

fn borrow(&self) -> &NSObject

Immutably borrows from an owned value.

impl ClassType for NSTask

const NAME: &'static str = "NSTask"

The name of the Objective-C class that this type represents.

type Super = NSObject

The superclass of this class.

type ThreadKind = <<NSTask as ClassType>::Super as ClassType>::ThreadKind

Whether the type can be used from any thread, or from only the main thread.

fn class() -> &'static AnyClass

Get a reference to the Objective-C class that this type represents.

fn as_super(&self) -> &Self::Super

Get an immutable reference to the superclass.

impl Debug for NSTask

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl DefaultRetained for NSTask

fn default_retained() -> Retained<Self>

The default Retained for a type.

impl Deref for NSTask

type Target = NSObject

The resulting type after dereferencing.

fn deref(&self) -> &Self::Target

Dereferences the value.

impl Hash for NSTask

fn hash<H: Hasher>(&self, state: &mut H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Message for NSTask

fn retain(&self) -> Retained<Self>

where Self: Sized,

Increment the reference count of the receiver.

impl NSObjectProtocol for NSTask

fn isEqual(&self, other: Option<&AnyObject>) -> bool

where Self: Sized + Message,

Check whether the object is equal to an arbitrary other object.

fn hash(&self) -> usize

where Self: Sized + Message,

An integer that can be used as a table address in a hash table structure.

fn isKindOfClass(&self, cls: &AnyClass) -> bool

where Self: Sized + Message,

Check if the object is an instance of the class, or one of its subclasses.

fn is_kind_of<T>(&self) -> bool

where T: ClassType, Self: Sized + Message,

👎Deprecated: use isKindOfClass directly, or cast your objects with AnyObject::downcast_ref

Check if the object is an instance of the class type, or one of its subclasses.

fn isMemberOfClass(&self, cls: &AnyClass) -> bool

where Self: Sized + Message,

Check if the object is an instance of a specific class, without checking subclasses.

fn respondsToSelector(&self, aSelector: Sel) -> bool

where Self: Sized + Message,

Check whether the object implements or inherits a method with the given selector.

fn conformsToProtocol(&self, aProtocol: &AnyProtocol) -> bool

where Self: Sized + Message,

Check whether the object conforms to a given protocol.

fn description(&self) -> Retained<NSObject>

where Self: Sized + Message,

A textual representation of the object.

fn debugDescription(&self) -> Retained<NSObject>

where Self: Sized + Message,

A textual representation of the object to use when debugging.

fn isProxy(&self) -> bool

where Self: Sized + Message,

Check whether the receiver is a subclass of the NSProxy root class instead of the usual NSObject.

fn retainCount(&self) -> usize

where Self: Sized + Message,

The reference count of the object.

impl PartialEq for NSTask

fn eq(&self, other: &Self) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl RefEncode for NSTask

const ENCODING_REF: Encoding = <NSObject as ::objc2::RefEncode>::ENCODING_REF

The Objective-C type-encoding for a reference of this type.

impl DowncastTarget for NSTask

impl Eq for NSTask

impl Send for NSTask

impl Sync for NSTask