Struct NSUserActivity

#[repr(C)]
pub struct NSUserActivity { /* private fields */ }

Available on crate feature NSUserActivity only.

Apple’s documentation

Implementations

impl NSUserActivity

pub unsafe fn initWithActivityType( this: Allocated<Self>, activity_type: &NSString, ) -> Retained<Self>

Available on crate feature NSString only.

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

👎Deprecated: Use initWithActivityType: with a specific activity type string

pub unsafe fn activityType(&self) -> Retained<NSString>

Available on crate feature NSString only.

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

Available on crate feature NSString only.

pub unsafe fn setTitle(&self, title: Option<&NSString>)

Available on crate feature NSString only.

Setter for title.

pub unsafe fn userInfo(&self) -> Option<Retained<NSDictionary>>

Available on crate feature NSDictionary only.

pub unsafe fn setUserInfo(&self, user_info: Option<&NSDictionary>)

Available on crate feature NSDictionary only.

Setter for userInfo.

pub unsafe fn addUserInfoEntriesFromDictionary( &self, other_dictionary: &NSDictionary, )

Available on crate feature NSDictionary only.

pub unsafe fn requiredUserInfoKeys(&self) -> Option<Retained<NSSet<NSString>>>

Available on crate features NSSet and NSString only.

pub unsafe fn setRequiredUserInfoKeys( &self, required_user_info_keys: Option<&NSSet<NSString>>, )

Available on crate features NSSet and NSString only.

Setter for requiredUserInfoKeys.

pub unsafe fn needsSave(&self) -> bool

pub unsafe fn setNeedsSave(&self, needs_save: bool)

Setter for needsSave.

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

Available on crate feature NSURL only.

pub unsafe fn setWebpageURL(&self, webpage_url: Option<&NSURL>)

Available on crate feature NSURL only.

Setter for webpageURL.

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

Available on crate feature NSURL only.

pub unsafe fn setReferrerURL(&self, referrer_url: Option<&NSURL>)

Available on crate feature NSURL only.

Setter for referrerURL.

pub unsafe fn expirationDate(&self) -> Option<Retained<NSDate>>

Available on crate feature NSDate only.

pub unsafe fn setExpirationDate(&self, expiration_date: Option<&NSDate>)

Available on crate feature NSDate only.

Setter for expirationDate.

pub unsafe fn keywords(&self) -> Retained<NSSet<NSString>>

Available on crate features NSSet and NSString only.

pub unsafe fn setKeywords(&self, keywords: &NSSet<NSString>)

Available on crate features NSSet and NSString only.

Setter for keywords.

pub unsafe fn supportsContinuationStreams(&self) -> bool

pub unsafe fn setSupportsContinuationStreams( &self, supports_continuation_streams: bool, )

Setter for supportsContinuationStreams.

pub unsafe fn delegate( &self, ) -> Option<Retained<ProtocolObject<dyn NSUserActivityDelegate>>>

pub unsafe fn setDelegate( &self, delegate: Option<&ProtocolObject<dyn NSUserActivityDelegate>>, )

This is a weak property. Setter for delegate.

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

Available on crate feature NSString only.

pub unsafe fn setTargetContentIdentifier( &self, target_content_identifier: Option<&NSString>, )

Available on crate feature NSString only.

Setter for targetContentIdentifier.

pub unsafe fn becomeCurrent(&self)

pub unsafe fn resignCurrent(&self)

pub unsafe fn invalidate(&self)

pub unsafe fn getContinuationStreamsWithCompletionHandler( &self, completion_handler: &Block<dyn Fn(*mut NSInputStream, *mut NSOutputStream, *mut NSError)>, )

Available on crate features NSError and NSStream and block2 only.

pub unsafe fn isEligibleForHandoff(&self) -> bool

pub unsafe fn setEligibleForHandoff(&self, eligible_for_handoff: bool)

Setter for isEligibleForHandoff.

pub unsafe fn isEligibleForSearch(&self) -> bool

pub unsafe fn setEligibleForSearch(&self, eligible_for_search: bool)

Setter for isEligibleForSearch.

pub unsafe fn isEligibleForPublicIndexing(&self) -> bool

pub unsafe fn setEligibleForPublicIndexing( &self, eligible_for_public_indexing: bool, )

Setter for isEligibleForPublicIndexing.

pub unsafe fn isEligibleForPrediction(&self) -> bool

pub unsafe fn setEligibleForPrediction(&self, eligible_for_prediction: bool)

Setter for isEligibleForPrediction.

pub unsafe fn persistentIdentifier( &self, ) -> Option<Retained<NSUserActivityPersistentIdentifier>>

Available on crate feature NSString only.

pub unsafe fn setPersistentIdentifier( &self, persistent_identifier: Option<&NSUserActivityPersistentIdentifier>, )

Available on crate feature NSString only.

Setter for persistentIdentifier.

pub unsafe fn deleteSavedUserActivitiesWithPersistentIdentifiers_completionHandler( persistent_identifiers: &NSArray<NSUserActivityPersistentIdentifier>, handler: &Block<dyn Fn()>, )

Available on crate features NSArray and NSString and block2 only.

pub unsafe fn deleteAllSavedUserActivitiesWithCompletionHandler( handler: &Block<dyn Fn()>, )

Available on crate feature block2 only.

impl NSUserActivity

Methods declared on superclass NSObject.

pub unsafe fn new() -> Retained<Self>

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.

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 NSUserActivity

fn as_ref(&self) -> &AnyObject

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

impl AsRef<NSObject> for NSUserActivity

fn as_ref(&self) -> &NSObject

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

impl AsRef<NSUserActivity> for NSUserActivity

fn as_ref(&self) -> &Self

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

impl Borrow<AnyObject> for NSUserActivity

fn borrow(&self) -> &AnyObject

Immutably borrows from an owned value.

impl Borrow<NSObject> for NSUserActivity

fn borrow(&self) -> &NSObject

Immutably borrows from an owned value.

impl ClassType for NSUserActivity

const NAME: &'static str = "NSUserActivity"

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

type Super = NSObject

The superclass of this class.

type ThreadKind = <<NSUserActivity 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 NSUserActivity

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

Formats the value using the given formatter.

impl Deref for NSUserActivity

type Target = NSObject

The resulting type after dereferencing.

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

Dereferences the value.

impl Hash for NSUserActivity

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 NSUserActivity

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

where Self: Sized,

Increment the reference count of the receiver.

impl NSObjectProtocol for NSUserActivity

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 NSUserActivity

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 NSUserActivity

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

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

impl DowncastTarget for NSUserActivity

impl Eq for NSUserActivity