#[repr(C)]pub struct UITabGroup { /* private fields */ }
UITab
and UITabGroup
only.Expand description
Implementations§
Source§impl UITabGroup
impl UITabGroup
Sourcepub unsafe fn selectedChild(&self) -> Option<Retained<UITab>>
pub unsafe fn selectedChild(&self) -> Option<Retained<UITab>>
The currently selected tab. The tab must be part of children
.
Sourcepub unsafe fn setSelectedChild(&self, selected_child: Option<&UITab>)
pub unsafe fn setSelectedChild(&self, selected_child: Option<&UITab>)
Setter for selectedChild
.
Sourcepub unsafe fn defaultChildIdentifier(&self) -> Option<Retained<NSString>>
pub unsafe fn defaultChildIdentifier(&self) -> Option<Retained<NSString>>
The default child tab to select for when a selection is required and selectedChild
is nil.
If this is nil, then the default selected element is the first element of children
. Default is nil.
Sourcepub unsafe fn setDefaultChildIdentifier(
&self,
default_child_identifier: Option<&NSString>,
)
pub unsafe fn setDefaultChildIdentifier( &self, default_child_identifier: Option<&NSString>, )
Setter for defaultChildIdentifier
.
Sourcepub unsafe fn children(&self) -> Retained<NSArray<UITab>>
pub unsafe fn children(&self) -> Retained<NSArray<UITab>>
Child tabs of the tab group. Default is an empty array.
Sourcepub unsafe fn setChildren(&self, children: &NSArray<UITab>)
pub unsafe fn setChildren(&self, children: &NSArray<UITab>)
Setter for children
.
Sourcepub unsafe fn displayOrderIdentifiers(&self) -> Retained<NSArray<NSString>>
pub unsafe fn displayOrderIdentifiers(&self) -> Retained<NSArray<NSString>>
The display order of the children, represented by the identifiers. Default is empty.
Any tab in children
not contained in displayOrderIdentifiers
will be appended after
sorted items. Identifiers that do not match tabs in children
will be ignored.
Sourcepub unsafe fn setDisplayOrderIdentifiers(
&self,
display_order_identifiers: &NSArray<NSString>,
)
pub unsafe fn setDisplayOrderIdentifiers( &self, display_order_identifiers: &NSArray<NSString>, )
Setter for displayOrderIdentifiers
.
Sourcepub unsafe fn allowsReordering(&self) -> bool
pub unsafe fn allowsReordering(&self) -> bool
Determines if elements in children
can be reordered from the sidebar. Default is NO.
Changes in the display order are notified via tabBarController:didCustomizeDisplayOrderForGroup:
in UITabBarControllerDelegate
.
Sourcepub unsafe fn setAllowsReordering(&self, allows_reordering: bool)
pub unsafe fn setAllowsReordering(&self, allows_reordering: bool)
Setter for allowsReordering
.
Sourcepub unsafe fn displayOrder(&self) -> Retained<NSArray<UITab>>
pub unsafe fn displayOrder(&self) -> Retained<NSArray<UITab>>
Returns the children
array sorted by displayOrderIdentifiers
if it is specified.
Any tab in children
not contained in the identifiers will be appended after
sorted items. Identifiers that do not match tabs in children
will be ignored.
Sourcepub unsafe fn tabForIdentifier(
&self,
identifier: &NSString,
) -> Option<Retained<UITab>>
pub unsafe fn tabForIdentifier( &self, identifier: &NSString, ) -> Option<Retained<UITab>>
Returns the tab
matching the specified identifier
in the group’s children and its descendants.
Returns nil if no tab is found matching the identifier
.
Available on crate features UINavigationController
and UIResponder
and UIViewController
only.
UINavigationController
and UIResponder
and UIViewController
only.A navigation controller used to automatically manage the view controller hierarchy of the group.
Set a UINavigationController
to allow the tab group to manage the hierarchy automatically.
The navigation stack of the managing navigation controller will be managed by the tab group based on
the selected tab of the group. When multiple navigation controllers are set on nested groups, the rootmost
controller is used. Default is nil.
By default, the navigation stack is represented by the view controller of each tab of the selected tree, if a view controller is provided for that level. If no view controller is provided for that level, then it will be ignored.
To customize the displayed view controllers per tab level of selection, implement the delegate method
tabBarController:displayedViewControllersForTab:proposedViewControllers:
on UITabBarControllerDelegate
, which will propose a set of view controllers per level.
Available on crate features UINavigationController
and UIResponder
and UIViewController
only.
UINavigationController
and UIResponder
and UIViewController
only.Setter for managingNavigationController
.
Available on crate features UIAction
and UIMenuElement
only.
UIAction
and UIMenuElement
only.Actions to display in the sidebar, after all tabs. Default is nil.
Sourcepub unsafe fn setSidebarActions(&self, sidebar_actions: &NSArray<UIAction>)
Available on crate features UIAction
and UIMenuElement
only.
pub unsafe fn setSidebarActions(&self, sidebar_actions: &NSArray<UIAction>)
UIAction
and UIMenuElement
only.Setter for sidebarActions
.
The preferred appearance of the group and its children in the sidebar. Default is automatic
Sourcepub unsafe fn setSidebarAppearance(
&self,
sidebar_appearance: UITabGroupSidebarAppearance,
)
pub unsafe fn setSidebarAppearance( &self, sidebar_appearance: UITabGroupSidebarAppearance, )
Setter for sidebarAppearance
.
Sourcepub unsafe fn initWithTitle_image_identifier_children_viewControllerProvider(
this: Allocated<Self>,
title: &NSString,
image: Option<&UIImage>,
identifier: &NSString,
children: &NSArray<UITab>,
view_controller_provider: Option<&DynBlock<dyn Fn(NonNull<UITab>) -> NonNull<UIViewController>>>,
) -> Retained<Self>
Available on crate features UIImage
and UIResponder
and UIViewController
and block2
only.
pub unsafe fn initWithTitle_image_identifier_children_viewControllerProvider( this: Allocated<Self>, title: &NSString, image: Option<&UIImage>, identifier: &NSString, children: &NSArray<UITab>, view_controller_provider: Option<&DynBlock<dyn Fn(NonNull<UITab>) -> NonNull<UIViewController>>>, ) -> Retained<Self>
UIImage
and UIResponder
and UIViewController
and block2
only.Creates a UITabGroup
using the specified parameters.
Source§impl UITabGroup
Methods declared on superclass UITab
.
impl UITabGroup
Methods declared on superclass UITab
.
Sourcepub unsafe fn initWithTitle_image_identifier_viewControllerProvider(
this: Allocated<Self>,
title: &NSString,
image: Option<&UIImage>,
identifier: &NSString,
view_controller_provider: Option<&DynBlock<dyn Fn(NonNull<UITab>) -> NonNull<UIViewController>>>,
) -> Retained<Self>
Available on crate features UIImage
and UIResponder
and UIViewController
and block2
only.
pub unsafe fn initWithTitle_image_identifier_viewControllerProvider( this: Allocated<Self>, title: &NSString, image: Option<&UIImage>, identifier: &NSString, view_controller_provider: Option<&DynBlock<dyn Fn(NonNull<UITab>) -> NonNull<UIViewController>>>, ) -> Retained<Self>
UIImage
and UIResponder
and UIViewController
and block2
only.Creates a tab with the specified identifier, title, image, and view controller provider.
The view controller provider is called when a view controller is requested and is currently nil.
For root level tabs on UITabBarController
, the resolved view controller must be non-nil.
pub unsafe fn init(this: Allocated<Self>) -> Retained<Self>
pub unsafe fn new(mtm: MainThreadMarker) -> Retained<Self>
Methods from Deref<Target = UITab>§
Sourcepub unsafe fn identifier(&self) -> Retained<NSString>
pub unsafe fn identifier(&self) -> Retained<NSString>
The identifier associated with the tab, must be unique across the tab bar controller.
Sourcepub unsafe fn isEnabled(&self) -> bool
pub unsafe fn isEnabled(&self) -> bool
Determines if the tab is enabled. When NO, tabs will have a disabled appearance and cannot be selected by the user. Default is YES.
Sourcepub unsafe fn setEnabled(&self, enabled: bool)
pub unsafe fn setEnabled(&self, enabled: bool)
Setter for isEnabled
.
Sourcepub unsafe fn image(&self) -> Option<Retained<UIImage>>
Available on crate feature UIImage
only.
pub unsafe fn image(&self) -> Option<Retained<UIImage>>
UIImage
only.The image of the tab. Default is nil.
Sourcepub unsafe fn setImage(&self, image: Option<&UIImage>)
Available on crate feature UIImage
only.
pub unsafe fn setImage(&self, image: Option<&UIImage>)
UIImage
only.Setter for image
.
Sourcepub unsafe fn subtitle(&self) -> Option<Retained<NSString>>
pub unsafe fn subtitle(&self) -> Option<Retained<NSString>>
The subtitle of the tab. This is displayed only in certain contexts, like the sidebar. Default is nil.
Sourcepub unsafe fn setSubtitle(&self, subtitle: Option<&NSString>)
pub unsafe fn setSubtitle(&self, subtitle: Option<&NSString>)
Setter for subtitle
.
Sourcepub unsafe fn badgeValue(&self) -> Option<Retained<NSString>>
pub unsafe fn badgeValue(&self) -> Option<Retained<NSString>>
The badge value of the tab. Default is nil.
Sourcepub unsafe fn setBadgeValue(&self, badge_value: Option<&NSString>)
pub unsafe fn setBadgeValue(&self, badge_value: Option<&NSString>)
Setter for badgeValue
.
Sourcepub unsafe fn preferredPlacement(&self) -> UITabPlacement
pub unsafe fn preferredPlacement(&self) -> UITabPlacement
The preferred placement for the tab in the contexts that allow for different tab placements.
Default is UITabPlacementAutomatic
which resolves its placement based on context.
Sourcepub unsafe fn setPreferredPlacement(&self, preferred_placement: UITabPlacement)
pub unsafe fn setPreferredPlacement(&self, preferred_placement: UITabPlacement)
Setter for preferredPlacement
.
Sourcepub unsafe fn userInfo(&self) -> Option<Retained<AnyObject>>
pub unsafe fn userInfo(&self) -> Option<Retained<AnyObject>>
A custom object associated with the tab. Default is nil.
Sourcepub unsafe fn setUserInfo(&self, user_info: Option<&AnyObject>)
pub unsafe fn setUserInfo(&self, user_info: Option<&AnyObject>)
Setter for userInfo
.
Sourcepub unsafe fn parent(&self) -> Option<Retained<UITabGroup>>
pub unsafe fn parent(&self) -> Option<Retained<UITabGroup>>
The parent group of the tab. This is only non-nil if the tab is part of a parent group, and returns nil otherwise.
Sourcepub unsafe fn tabBarController(&self) -> Option<Retained<UITabBarController>>
Available on crate features UIResponder
and UITabBarController
and UIViewController
only.
pub unsafe fn tabBarController(&self) -> Option<Retained<UITabBarController>>
UIResponder
and UITabBarController
and UIViewController
only.The tab bar controller managing the tab. This is non-nil when the tab or any of its ancestors is added to a UITabBarController; and is nil otherwise.
Sourcepub unsafe fn viewController(&self) -> Option<Retained<UIViewController>>
Available on crate features UIResponder
and UIViewController
only.
pub unsafe fn viewController(&self) -> Option<Retained<UIViewController>>
UIResponder
and UIViewController
only.The view controller owned by the tab. The view controller provider is used to resolve the view controller if it is currently nil. For root level tabs, the view controller for the tab must be non-nil.
Sourcepub unsafe fn managingTabGroup(&self) -> Option<Retained<UITabGroup>>
pub unsafe fn managingTabGroup(&self) -> Option<Retained<UITabGroup>>
The managing tab group for the tab. This returns the rootmost UITabGroup
in the tab’s parent hierarchy with an
active managingNavigationController
. This can be different to parent
if the tab is nested in multiple
levels of tab groups. If the tab does not belong to a hierarchy with a managing navigation controller, then this
will return nil. Default is nil.
Sourcepub unsafe fn isHidden(&self) -> bool
pub unsafe fn isHidden(&self) -> bool
Determines if the tab is currently hidden. Default is NO. Hidden tabs cannot be accessed from the sidebar.
Sourcepub unsafe fn isHiddenByDefault(&self) -> bool
pub unsafe fn isHiddenByDefault(&self) -> bool
The default hidden state. When the user resets their customization, UITab.hidden
will be set to the value
of this property. Default is NO.
Sourcepub unsafe fn setHiddenByDefault(&self, hidden_by_default: bool)
pub unsafe fn setHiddenByDefault(&self, hidden_by_default: bool)
Setter for isHiddenByDefault
.
Sourcepub unsafe fn allowsHiding(&self) -> bool
pub unsafe fn allowsHiding(&self) -> bool
Determines if the tab’s visibility can be changed by the user while editing. Default is NO.
Sourcepub unsafe fn setAllowsHiding(&self, allows_hiding: bool)
pub unsafe fn setAllowsHiding(&self, allows_hiding: bool)
Setter for allowsHiding
.
Sourcepub unsafe fn hasVisiblePlacement(&self) -> bool
pub unsafe fn hasVisiblePlacement(&self) -> bool
Determines if the tab has a visible placement. Returns YES if the tab is visible in a tab bar that supports different tab placements. Otherwise returns NO.
Methods from Deref<Target = NSObject>§
Sourcepub fn doesNotRecognizeSelector(&self, sel: Sel) -> !
pub fn doesNotRecognizeSelector(&self, sel: Sel) -> !
Handle messages the object doesn’t recognize.
See Apple’s documentation for details.
Methods from Deref<Target = AnyObject>§
Sourcepub fn class(&self) -> &'static AnyClass
Available on crate feature UIIndirectScribbleInteraction
only.
pub fn class(&self) -> &'static AnyClass
UIIndirectScribbleInteraction
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());
Sourcepub unsafe fn get_ivar<T>(&self, name: &str) -> &Twhere
T: Encode,
👎Deprecated: this is difficult to use correctly, use Ivar::load
instead.Available on crate feature UIIndirectScribbleInteraction
only.
pub unsafe fn get_ivar<T>(&self, name: &str) -> &Twhere
T: Encode,
Ivar::load
instead.UIIndirectScribbleInteraction
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.
Sourcepub fn downcast_ref<T>(&self) -> Option<&T>where
T: DowncastTarget,
Available on crate feature UIIndirectScribbleInteraction
only.
pub fn downcast_ref<T>(&self) -> Option<&T>where
T: DowncastTarget,
UIIndirectScribbleInteraction
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§
Source§impl AsRef<AnyObject> for UITabGroup
impl AsRef<AnyObject> for UITabGroup
Source§impl AsRef<NSObject> for UITabGroup
impl AsRef<NSObject> for UITabGroup
Source§impl AsRef<UITab> for UITabGroup
impl AsRef<UITab> for UITabGroup
Source§impl AsRef<UITabGroup> for UITabGroup
impl AsRef<UITabGroup> for UITabGroup
Source§impl Borrow<AnyObject> for UITabGroup
impl Borrow<AnyObject> for UITabGroup
Source§impl Borrow<NSObject> for UITabGroup
impl Borrow<NSObject> for UITabGroup
Source§impl Borrow<UITab> for UITabGroup
impl Borrow<UITab> for UITabGroup
Source§impl ClassType for UITabGroup
impl ClassType for UITabGroup
Source§const NAME: &'static str = "UITabGroup"
const NAME: &'static str = "UITabGroup"
Source§type ThreadKind = dyn MainThreadOnly
type ThreadKind = dyn MainThreadOnly
Source§impl Debug for UITabGroup
impl Debug for UITabGroup
Source§impl Deref for UITabGroup
impl Deref for UITabGroup
Source§impl Hash for UITabGroup
impl Hash for UITabGroup
Source§impl Message for UITabGroup
impl Message for UITabGroup
Source§impl NSObjectProtocol for UITabGroup
impl NSObjectProtocol for UITabGroup
Source§fn isEqual(&self, other: Option<&AnyObject>) -> bool
fn isEqual(&self, other: Option<&AnyObject>) -> bool
Source§fn hash(&self) -> usize
fn hash(&self) -> usize
Source§fn isKindOfClass(&self, cls: &AnyClass) -> bool
fn isKindOfClass(&self, cls: &AnyClass) -> bool
Source§fn is_kind_of<T>(&self) -> bool
fn is_kind_of<T>(&self) -> bool
isKindOfClass
directly, or cast your objects with AnyObject::downcast_ref
Source§fn isMemberOfClass(&self, cls: &AnyClass) -> bool
fn isMemberOfClass(&self, cls: &AnyClass) -> bool
Source§fn respondsToSelector(&self, aSelector: Sel) -> bool
fn respondsToSelector(&self, aSelector: Sel) -> bool
Source§fn conformsToProtocol(&self, aProtocol: &AnyProtocol) -> bool
fn conformsToProtocol(&self, aProtocol: &AnyProtocol) -> bool
Source§fn debugDescription(&self) -> Retained<NSObject>
fn debugDescription(&self) -> Retained<NSObject>
Source§impl PartialEq for UITabGroup
impl PartialEq for UITabGroup
Source§impl RefEncode for UITabGroup
impl RefEncode for UITabGroup
Source§const ENCODING_REF: Encoding = <UITab as ::objc2::RefEncode>::ENCODING_REF
const ENCODING_REF: Encoding = <UITab as ::objc2::RefEncode>::ENCODING_REF
impl DowncastTarget for UITabGroup
impl Eq for UITabGroup
Auto Trait Implementations§
impl !Freeze for UITabGroup
impl !RefUnwindSafe for UITabGroup
impl !Send for UITabGroup
impl !Sync for UITabGroup
impl !Unpin for UITabGroup
impl !UnwindSafe for UITabGroup
Blanket Implementations§
Source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
Source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Source§impl<'a, T> MainThreadOnly for T
impl<'a, T> MainThreadOnly for T
Source§fn mtm(&self) -> MainThreadMarker
fn mtm(&self) -> MainThreadMarker
MainThreadMarker
from the main-thread-only object. Read more