Struct NSTableViewDiffableDataSource

#[repr(C)]
pub struct NSTableViewDiffableDataSource<SectionIdentifierType: ?Sized = AnyObject, ItemIdentifierType: ?Sized = AnyObject> { /* private fields */ }

Available on crate feature NSTableViewDiffableDataSource only.

Apple’s documentation

Implementations

impl<SectionIdentifierType: Message, ItemIdentifierType: Message> NSTableViewDiffableDataSource<SectionIdentifierType, ItemIdentifierType>

pub unsafe fn initWithTableView_cellProvider( this: Allocated<Self>, table_view: &NSTableView, cell_provider: NSTableViewDiffableDataSourceCellProvider, ) -> Retained<Self>

Available on crate features NSControl and NSResponder and NSTableColumn and NSTableView and NSView and block2 only.

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

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

pub unsafe fn snapshot( &self, ) -> Retained<NSDiffableDataSourceSnapshot<SectionIdentifierType, ItemIdentifierType>>

Available on crate feature NSDiffableDataSource only.

pub unsafe fn applySnapshot_animatingDifferences( &self, snapshot: &NSDiffableDataSourceSnapshot<SectionIdentifierType, ItemIdentifierType>, animating_differences: bool, )

Available on crate feature NSDiffableDataSource only.

pub unsafe fn applySnapshot_animatingDifferences_completion( &self, snapshot: &NSDiffableDataSourceSnapshot<SectionIdentifierType, ItemIdentifierType>, animating_differences: bool, completion: Option<&DynBlock<dyn Fn()>>, )

Available on crate features NSDiffableDataSource and block2 only.

pub unsafe fn itemIdentifierForRow( &self, row: NSInteger, ) -> Option<Retained<ItemIdentifierType>>

pub unsafe fn rowForItemIdentifier( &self, identifier: &ItemIdentifierType, ) -> NSInteger

pub unsafe fn sectionIdentifierForRow( &self, row: NSInteger, ) -> Option<Retained<SectionIdentifierType>>

pub unsafe fn rowForSectionIdentifier( &self, identifier: &SectionIdentifierType, ) -> NSInteger

pub unsafe fn rowViewProvider( &self, mtm: MainThreadMarker, ) -> NSTableViewDiffableDataSourceRowProvider

Available on crate features NSControl and NSResponder and NSTableRowView and NSTableView and NSView and block2 only.

pub unsafe fn setRowViewProvider( &self, row_view_provider: NSTableViewDiffableDataSourceRowProvider, )

Available on crate features NSControl and NSResponder and NSTableRowView and NSTableView and NSView and block2 only.

Setter for rowViewProvider.

pub unsafe fn sectionHeaderViewProvider( &self, mtm: MainThreadMarker, ) -> NSTableViewDiffableDataSourceSectionHeaderViewProvider

Available on crate features NSControl and NSResponder and NSTableView and NSView and block2 only.

pub unsafe fn setSectionHeaderViewProvider( &self, section_header_view_provider: NSTableViewDiffableDataSourceSectionHeaderViewProvider, )

Available on crate features NSControl and NSResponder and NSTableView and NSView and block2 only.

Setter for sectionHeaderViewProvider.

pub unsafe fn defaultRowAnimation(&self) -> NSTableViewAnimationOptions

Available on crate feature NSTableView only.

pub unsafe fn setDefaultRowAnimation( &self, default_row_animation: NSTableViewAnimationOptions, )

Available on crate feature NSTableView only.

Setter for defaultRowAnimation.

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<SectionIdentifierType: ?Sized + Message, ItemIdentifierType: ?Sized + Message> AsRef<AnyObject> for NSTableViewDiffableDataSource<SectionIdentifierType, ItemIdentifierType>

fn as_ref(&self) -> &AnyObject

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

impl<SectionIdentifierType: ?Sized + Message, ItemIdentifierType: ?Sized + Message> AsRef<NSObject> for NSTableViewDiffableDataSource<SectionIdentifierType, ItemIdentifierType>

fn as_ref(&self) -> &NSObject

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

impl<SectionIdentifierType: ?Sized + Message, ItemIdentifierType: ?Sized + Message> AsRef<NSTableViewDiffableDataSource<SectionIdentifierType, ItemIdentifierType>> for NSTableViewDiffableDataSource<SectionIdentifierType, ItemIdentifierType>

fn as_ref(&self) -> &Self

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

impl<SectionIdentifierType: ?Sized + Message, ItemIdentifierType: ?Sized + Message> Borrow<AnyObject> for NSTableViewDiffableDataSource<SectionIdentifierType, ItemIdentifierType>

fn borrow(&self) -> &AnyObject

Immutably borrows from an owned value.

impl<SectionIdentifierType: ?Sized + Message, ItemIdentifierType: ?Sized + Message> Borrow<NSObject> for NSTableViewDiffableDataSource<SectionIdentifierType, ItemIdentifierType>

fn borrow(&self) -> &NSObject

Immutably borrows from an owned value.

impl<SectionIdentifierType: ?Sized + Message, ItemIdentifierType: ?Sized + Message> ClassType for NSTableViewDiffableDataSource<SectionIdentifierType, ItemIdentifierType>

const NAME: &'static str = "NSTableViewDiffableDataSource"

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

type Super = NSObject

The superclass of this class.

type ThreadKind = <<NSTableViewDiffableDataSource<SectionIdentifierType, ItemIdentifierType> 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<SectionIdentifierType: ?Sized, ItemIdentifierType: ?Sized> Debug for NSTableViewDiffableDataSource<SectionIdentifierType, ItemIdentifierType>

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

Formats the value using the given formatter.

impl<SectionIdentifierType: ?Sized + Message, ItemIdentifierType: ?Sized + Message> Deref for NSTableViewDiffableDataSource<SectionIdentifierType, ItemIdentifierType>

type Target = NSObject

The resulting type after dereferencing.

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

Dereferences the value.

impl<SectionIdentifierType: ?Sized, ItemIdentifierType: ?Sized> Hash for NSTableViewDiffableDataSource<SectionIdentifierType, ItemIdentifierType>

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<SectionIdentifierType: ?Sized + Message, ItemIdentifierType: ?Sized + Message> Message for NSTableViewDiffableDataSource<SectionIdentifierType, ItemIdentifierType>

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

where Self: Sized,

Increment the reference count of the receiver.

impl<SectionIdentifierType: ?Sized, ItemIdentifierType: ?Sized> NSObjectProtocol for NSTableViewDiffableDataSource<SectionIdentifierType, ItemIdentifierType>

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<SectionIdentifierType: ?Sized, ItemIdentifierType: ?Sized> NSTableViewDataSource for NSTableViewDiffableDataSource<SectionIdentifierType, ItemIdentifierType>

unsafe fn numberOfRowsInTableView(&self, table_view: &NSTableView) -> NSInteger

where Self: Sized + Message,

Available on crate features NSControl and NSResponder and NSView and NSTableView only.

unsafe fn tableView_objectValueForTableColumn_row( &self, table_view: &NSTableView, table_column: Option<&NSTableColumn>, row: NSInteger, ) -> Option<Retained<AnyObject>>

where Self: Sized + Message,

Available on crate features NSControl and NSResponder and NSTableColumn and NSView and NSTableView only.

unsafe fn tableView_setObjectValue_forTableColumn_row( &self, table_view: &NSTableView, object: Option<&AnyObject>, table_column: Option<&NSTableColumn>, row: NSInteger, )

where Self: Sized + Message,

Available on crate features NSControl and NSResponder and NSTableColumn and NSView and NSTableView only.

unsafe fn tableView_sortDescriptorsDidChange( &self, table_view: &NSTableView, old_descriptors: &NSArray<NSSortDescriptor>, )

where Self: Sized + Message,

Available on crate features NSControl and NSResponder and NSView and NSTableView only.

unsafe fn tableView_pasteboardWriterForRow( &self, table_view: &NSTableView, row: NSInteger, ) -> Option<Retained<ProtocolObject<dyn NSPasteboardWriting>>>

where Self: Sized + Message,

Available on crate features NSControl and NSPasteboard and NSResponder and NSView and NSTableView only.

unsafe fn tableView_draggingSession_willBeginAtPoint_forRowIndexes( &self, table_view: &NSTableView, session: &NSDraggingSession, screen_point: NSPoint, row_indexes: &NSIndexSet, )

where Self: Sized + Message,

Available on crate features NSControl and NSDraggingSession and NSResponder and NSView and NSTableView only.

unsafe fn tableView_draggingSession_endedAtPoint_operation( &self, table_view: &NSTableView, session: &NSDraggingSession, screen_point: NSPoint, operation: NSDragOperation, )

where Self: Sized + Message,

Available on crate features NSControl and NSDragging and NSDraggingSession and NSResponder and NSView and NSTableView only.

unsafe fn tableView_updateDraggingItemsForDrag( &self, table_view: &NSTableView, dragging_info: &ProtocolObject<dyn NSDraggingInfo>, )

where Self: Sized + Message,

Available on crate features NSControl and NSDragging and NSResponder and NSView and NSTableView only.

unsafe fn tableView_writeRowsWithIndexes_toPasteboard( &self, table_view: &NSTableView, row_indexes: &NSIndexSet, pboard: &NSPasteboard, ) -> bool

where Self: Sized + Message,

👎Deprecated: Use -tableView:pasteboardWriterForRow: instead

Available on crate features NSControl and NSPasteboard and NSResponder and NSView and NSTableView only.

unsafe fn tableView_validateDrop_proposedRow_proposedDropOperation( &self, table_view: &NSTableView, info: &ProtocolObject<dyn NSDraggingInfo>, row: NSInteger, drop_operation: NSTableViewDropOperation, ) -> NSDragOperation

where Self: Sized + Message,

Available on crate features NSControl and NSDragging and NSResponder and NSView and NSTableView only.

unsafe fn tableView_acceptDrop_row_dropOperation( &self, table_view: &NSTableView, info: &ProtocolObject<dyn NSDraggingInfo>, row: NSInteger, drop_operation: NSTableViewDropOperation, ) -> bool

where Self: Sized + Message,

Available on crate features NSControl and NSDragging and NSResponder and NSView and NSTableView only.

unsafe fn tableView_namesOfPromisedFilesDroppedAtDestination_forDraggedRowsWithIndexes( &self, table_view: &NSTableView, drop_destination: &NSURL, index_set: &NSIndexSet, ) -> Retained<NSArray<NSString>>

where Self: Sized + Message,

👎Deprecated: Use NSFilePromiseReceiver objects instead

Available on crate features NSControl and NSResponder and NSView and NSTableView only.

impl<SectionIdentifierType: ?Sized, ItemIdentifierType: ?Sized> PartialEq for NSTableViewDiffableDataSource<SectionIdentifierType, ItemIdentifierType>

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<SectionIdentifierType: ?Sized + Message, ItemIdentifierType: ?Sized + Message> RefEncode for NSTableViewDiffableDataSource<SectionIdentifierType, ItemIdentifierType>

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

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

impl DowncastTarget for NSTableViewDiffableDataSource<AnyObject, AnyObject>

impl<SectionIdentifierType: ?Sized, ItemIdentifierType: ?Sized> Eq for NSTableViewDiffableDataSource<SectionIdentifierType, ItemIdentifierType>