Struct NSTabViewItem 

pub struct NSTabViewItem { /* private fields */ }

Available on crate feature NSTabViewItem only.

Apple’s documentation

Implementations

impl NSTabViewItem

pub fn tabViewItemWithViewController( view_controller: &NSViewController, ) -> Retained<Self>

Available on crate features NSResponder and NSViewController only.

Creates an autoreleased TabViewItem that wraps the provided ViewController. The viewController is set as the tab view item’s -viewControllerproperty, which sets several of the tab view item’s other properties.

Parameter viewController: The view controller to wrap, used to set the viewController property

pub unsafe fn initWithIdentifier( this: Allocated<Self>, identifier: Option<&AnyObject>, ) -> Retained<Self>

Safety

identifier should be of the correct type.

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

pub unsafe fn setIdentifier(&self, identifier: Option<&AnyObject>)

Setter for identifier.

Safety

identifier should be of the correct type.

pub fn color(&self) -> Retained<NSColor>

Available on crate feature NSColor only.

pub fn setColor(&self, color: &NSColor)

Available on crate feature NSColor only.

Setter for color.

This is copied when set.

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

pub fn setLabel(&self, label: &NSString)

Setter for label.

This is copied when set.

pub fn image(&self) -> Option<Retained<NSImage>>

Available on crate feature NSImage only.

Get and set the image for this tab view item. The image may only be used in certain tab view styles and options. The default value is nil.

pub fn setImage(&self, image: Option<&NSImage>)

Available on crate feature NSImage only.

Setter for image.

pub fn view(&self, mtm: MainThreadMarker) -> Option<Retained<NSView>>

Available on crate features NSResponder and NSView only.

pub fn setView(&self, view: Option<&NSView>)

Available on crate features NSResponder and NSView only.

Setter for view.

pub fn viewController( &self, mtm: MainThreadMarker, ) -> Option<Retained<NSViewController>>

Available on crate features NSResponder and NSViewController only.

The view controller wrapped by the tab view item. This property must be set if the tab view item will be added to an NSTabViewController, but can also be used if the tab view item is added to an NSTabView. If this is set, the tab view item will forward -viewcalls onto the viewController. Setting a viewController will also set the following properties on the tab view item: -identifierfrom the address of the viewController, -labelfrom the viewController’s title, and -imagebased on the classname as the view controller. An image named “ViewControllerClassName-TabViewItem” will be searched for first, followed by “ViewControllerClassName”. It will search first using +[NSImage imageNamed:], then in viewController.nibBundle,and lastly in the bundle containing the view controller’s class. As defined by: -[NSImage imageNamed:imageName], -[viewController.nibBundle imageForResource:imageName], -[[NSBundle bundleForClass:[viewController class]] imageForResource:imageName]. One pass with imageName as [NSStringFromClass([viewController class]) stringByAppendingString: “ -TabViewItem“], followed by imageName as NSStringFromClass([viewController class]).

pub fn setViewController(&self, view_controller: Option<&NSViewController>)

Available on crate features NSResponder and NSViewController only.

Setter for viewController.

pub fn tabState(&self) -> NSTabState

pub fn tabView(&self, mtm: MainThreadMarker) -> Option<Retained<NSTabView>>

Available on crate features NSResponder and NSTabView and NSView only.

pub fn initialFirstResponder( &self, mtm: MainThreadMarker, ) -> Option<Retained<NSView>>

Available on crate features NSResponder and NSView only.

pub fn setInitialFirstResponder(&self, initial_first_responder: Option<&NSView>)

Available on crate features NSResponder and NSView only.

Setter for initialFirstResponder.

This is a weak property.

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

pub fn setToolTip(&self, tool_tip: Option<&NSString>)

Setter for toolTip.

This is copied when set.

pub fn drawLabel_inRect(&self, should_truncate_label: bool, label_rect: NSRect)

pub fn sizeOfLabel(&self, compute_min: bool) -> NSSize

impl NSTabViewItem

Methods declared on superclass NSObject.

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

pub 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

Available on crate feature NSAccessibilityConstants only.

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.

Available on crate feature NSAccessibilityConstants only.

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,

Available on crate feature NSAccessibilityConstants only.

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 NSTabViewItem

fn as_ref(&self) -> &AnyObject

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

impl AsRef<NSObject> for NSTabViewItem

fn as_ref(&self) -> &NSObject

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

impl AsRef<NSTabViewItem> for NSTabViewItem

fn as_ref(&self) -> &Self

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

impl Borrow<AnyObject> for NSTabViewItem

fn borrow(&self) -> &AnyObject

Immutably borrows from an owned value.

impl Borrow<NSObject> for NSTabViewItem

fn borrow(&self) -> &NSObject

Immutably borrows from an owned value.

impl ClassType for NSTabViewItem

const NAME: &'static str = "NSTabViewItem"

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

type Super = NSObject

The superclass of this class.

type ThreadKind = <<NSTabViewItem 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 NSTabViewItem

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

Formats the value using the given formatter.

impl DefaultRetained for NSTabViewItem

fn default_retained() -> Retained<Self>

The default Retained for a type.

impl Deref for NSTabViewItem

type Target = NSObject

The resulting type after dereferencing.

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

Dereferences the value.

impl Hash for NSTabViewItem

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 NSTabViewItem

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

where Self: Sized,

Increment the reference count of the receiver.

impl NSCoding for NSTabViewItem

unsafe fn encodeWithCoder(&self, coder: &NSCoder)

where Self: Sized + Message,

Safety

unsafe fn initWithCoder( this: Allocated<Self>, coder: &NSCoder, ) -> Option<Retained<Self>>

where Self: Sized + Message,

Safety

impl NSObjectProtocol for NSTabViewItem

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 NSTabViewItem

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 NSTabViewItem

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

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

impl DowncastTarget for NSTabViewItem

impl Eq for NSTabViewItem