Struct gtk4::Accessible

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pub struct Accessible { /* private fields */ }
Expand description

Accessible is an interface for describing UI elements for Assistive Technologies.

Every accessible implementation has:

The role cannot be changed after instantiating a Accessible implementation.

The attributes are updated every time a UI element’s state changes in a way that should be reflected by assistive technologies. For instance, if a Widget visibility changes, the AccessibleState::Hidden state will also change to reflect the visible property.

Every accessible implementation is part of a tree of accessible objects. Normally, this tree corresponds to the widget tree, but can be customized by reimplementing the vfunc::Gtk::Accessible::get_accessible_parent, vfunc::Gtk::Accessible::get_first_accessible_child and vfunc::Gtk::Accessible::get_next_accessible_sibling virtual functions. Note that you can not create a top-level accessible object as of now, which means that you must always have a parent accessible object. Also note that when an accessible object does not correspond to a widget, and it has children, whose implementation you don’t control, it is necessary to ensure the correct shape of the a11y tree by calling AccessibleExt::set_accessible_parent() and updating the sibling by AccessibleExt::update_next_accessible_sibling().

§Properties

§accessible-role

The accessible role of the given Accessible implementation.

The accessible role cannot be changed once set.

Readable | Writeable

§Implements

AccessibleExt, AccessibleExtManual

Implementations§

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impl Accessible

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pub const NONE: Option<&'static Accessible> = None

Trait Implementations§

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impl Clone for Accessible

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fn clone(&self) -> Self

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for Accessible

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

Formats the value using the given formatter. Read more
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impl HasParamSpec for Accessible

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type ParamSpec = ParamSpecObject

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type SetValue = Accessible

Preferred value to be used as setter for the associated ParamSpec.
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type BuilderFn = fn(_: &str) -> ParamSpecObjectBuilder<'_, Accessible>

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fn param_spec_builder() -> Self::BuilderFn

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impl Hash for Accessible

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

Feeds this value into the given Hasher. Read more
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fn hash_slice<H>(data: &[Self], state: &mut H)
where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher. Read more
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impl<T: AccessibleImpl> IsImplementable<T> for Accessible

Available on crate feature v4_10 only.
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fn interface_init(iface: &mut Interface<Self>)

Override the virtual methods of this interface for the given subclass and do other interface initialization. Read more
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fn instance_init(_instance: &mut InitializingObject<T>)

Instance specific initialization. Read more
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impl Ord for Accessible

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fn cmp(&self, other: &Self) -> Ordering

This method returns an Ordering between self and other. Read more
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fn max(self, other: Self) -> Self
where Self: Sized,

Compares and returns the maximum of two values. Read more
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fn min(self, other: Self) -> Self
where Self: Sized,

Compares and returns the minimum of two values. Read more
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fn clamp(self, min: Self, max: Self) -> Self
where Self: Sized + PartialOrd,

Restrict a value to a certain interval. Read more
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impl<OT: ObjectType> PartialEq<OT> for Accessible

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

This method tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl<OT: ObjectType> PartialOrd<OT> for Accessible

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fn partial_cmp(&self, other: &OT) -> Option<Ordering>

This method returns an ordering between self and other values if one exists. Read more
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fn lt(&self, other: &Rhs) -> bool

This method tests less than (for self and other) and is used by the < operator. Read more
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fn le(&self, other: &Rhs) -> bool

This method tests less than or equal to (for self and other) and is used by the <= operator. Read more
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fn gt(&self, other: &Rhs) -> bool

This method tests greater than (for self and other) and is used by the > operator. Read more
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fn ge(&self, other: &Rhs) -> bool

This method tests greater than or equal to (for self and other) and is used by the >= operator. Read more
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impl StaticType for Accessible

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fn static_type() -> Type

Returns the type identifier of Self.
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impl Eq for Accessible

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impl IsA<Accessible> for AboutDialog

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impl IsA<Accessible> for AccessibleRange

Available on crate feature v4_10 only.
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impl IsA<Accessible> for ActionBar

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impl IsA<Accessible> for Actionable

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impl IsA<Accessible> for AppChooser

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impl IsA<Accessible> for AppChooserButton

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impl IsA<Accessible> for AppChooserDialog

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impl IsA<Accessible> for AppChooserWidget

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impl IsA<Accessible> for ApplicationWindow

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impl IsA<Accessible> for AspectFrame

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impl IsA<Accessible> for Assistant

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impl IsA<Accessible> for Box

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impl IsA<Accessible> for Button

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impl IsA<Accessible> for Calendar

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impl IsA<Accessible> for CellEditable

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impl IsA<Accessible> for CellView

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impl IsA<Accessible> for CenterBox

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impl IsA<Accessible> for CheckButton

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impl IsA<Accessible> for ColorButton

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impl IsA<Accessible> for ColorChooserDialog

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impl IsA<Accessible> for ColorChooserWidget

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impl IsA<Accessible> for ColorDialogButton

Available on crate feature v4_10 only.
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impl IsA<Accessible> for ColumnView

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impl IsA<Accessible> for ComboBox

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impl IsA<Accessible> for ComboBoxText

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impl IsA<Accessible> for Dialog

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impl IsA<Accessible> for DragIcon

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impl IsA<Accessible> for DrawingArea

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impl IsA<Accessible> for DropDown

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impl IsA<Accessible> for Editable

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impl IsA<Accessible> for EditableLabel

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impl IsA<Accessible> for EmojiChooser

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impl IsA<Accessible> for Entry

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impl IsA<Accessible> for Expander

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impl IsA<Accessible> for FileChooserDialog

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impl IsA<Accessible> for FileChooserWidget

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impl IsA<Accessible> for Fixed

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impl IsA<Accessible> for FlowBox

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impl IsA<Accessible> for FlowBoxChild

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impl IsA<Accessible> for FontButton

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impl IsA<Accessible> for FontChooserDialog

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impl IsA<Accessible> for FontChooserWidget

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impl IsA<Accessible> for FontDialogButton

Available on crate feature v4_10 only.
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impl IsA<Accessible> for Frame

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impl IsA<Accessible> for GLArea

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impl IsA<Accessible> for GraphicsOffload

Available on crate feature v4_14 only.
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impl IsA<Accessible> for Grid

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impl IsA<Accessible> for GridView

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impl IsA<Accessible> for HeaderBar

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impl IsA<Accessible> for IconView

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impl IsA<Accessible> for Image

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impl IsA<Accessible> for InfoBar

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impl IsA<Accessible> for Inscription

Available on crate feature v4_8 only.
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impl IsA<Accessible> for Label

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impl IsA<Accessible> for LevelBar

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impl IsA<Accessible> for LinkButton

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impl IsA<Accessible> for ListBase

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impl IsA<Accessible> for ListBox

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impl IsA<Accessible> for ListBoxRow

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impl IsA<Accessible> for ListView

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impl IsA<Accessible> for LockButton

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impl IsA<Accessible> for MediaControls

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impl IsA<Accessible> for MenuButton

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impl IsA<Accessible> for MessageDialog

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impl IsA<Accessible> for Native

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impl IsA<Accessible> for Notebook

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impl IsA<Accessible> for Overlay

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impl IsA<Accessible> for PageSetupUnixDialog

Available on Linux only.
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impl IsA<Accessible> for Paned

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impl IsA<Accessible> for PasswordEntry

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impl IsA<Accessible> for Picture

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impl IsA<Accessible> for Popover

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impl IsA<Accessible> for PopoverMenu

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impl IsA<Accessible> for PopoverMenuBar

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impl IsA<Accessible> for PrintUnixDialog

Available on Linux only.
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impl IsA<Accessible> for ProgressBar

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impl IsA<Accessible> for Range

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impl IsA<Accessible> for Revealer

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impl IsA<Accessible> for Root

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impl IsA<Accessible> for Scale

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impl IsA<Accessible> for ScaleButton

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impl IsA<Accessible> for Scrollbar

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impl IsA<Accessible> for ScrolledWindow

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impl IsA<Accessible> for SearchEntry

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impl IsA<Accessible> for Separator

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impl IsA<Accessible> for ShortcutLabel

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impl IsA<Accessible> for ShortcutsGroup

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impl IsA<Accessible> for ShortcutsSection

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impl IsA<Accessible> for ShortcutsShortcut

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impl IsA<Accessible> for ShortcutsWindow

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impl IsA<Accessible> for SpinButton

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impl IsA<Accessible> for Spinner

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impl IsA<Accessible> for Stack

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impl IsA<Accessible> for StackPage

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impl IsA<Accessible> for StackSidebar

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impl IsA<Accessible> for StackSwitcher

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impl IsA<Accessible> for Statusbar

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impl IsA<Accessible> for Switch

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impl IsA<Accessible> for Text

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impl IsA<Accessible> for TextView

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impl IsA<Accessible> for ToggleButton

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impl IsA<Accessible> for TreeExpander

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impl IsA<Accessible> for TreeView

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impl IsA<Accessible> for Video

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impl IsA<Accessible> for Viewport

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impl IsA<Accessible> for VolumeButton

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impl IsA<Accessible> for Widget

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impl IsA<Accessible> for Window

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impl IsA<Accessible> for WindowControls

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impl IsA<Accessible> for WindowHandle

Auto Trait Implementations§

Blanket Implementations§

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impl<O> AccessibleExt for O
where O: IsA<Accessible>,

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fn announce(&self, message: &str, priority: AccessibleAnnouncementPriority)

Available on crate feature v4_14 only.
Requests the user’s screen reader to announce the given message. Read more
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fn accessible_parent(&self) -> Option<Accessible>

Available on crate feature v4_10 only.
Retrieves the accessible parent for an accessible object. Read more
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fn accessible_role(&self) -> AccessibleRole

Retrieves the accessible role of an accessible object. Read more
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fn at_context(&self) -> ATContext

Available on crate feature v4_10 only.
Retrieves the accessible implementation for the given Accessible. Read more
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fn bounds(&self) -> Option<(i32, i32, i32, i32)>

Available on crate feature v4_10 only.
Queries the coordinates and dimensions of this accessible Read more
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fn first_accessible_child(&self) -> Option<Accessible>

Available on crate feature v4_10 only.
Retrieves the first accessible child of an accessible object. Read more
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fn next_accessible_sibling(&self) -> Option<Accessible>

Available on crate feature v4_10 only.
Retrieves the next accessible sibling of an accessible object Read more
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fn platform_state(&self, state: AccessiblePlatformState) -> bool

Available on crate feature v4_10 only.
Query a platform state, such as focus. Read more
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fn reset_property(&self, property: AccessibleProperty)

Resets the accessible @property to its default value. Read more
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fn reset_relation(&self, relation: AccessibleRelation)

Resets the accessible @relation to its default value. Read more
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fn reset_state(&self, state: AccessibleState)

Resets the accessible @state to its default value. Read more
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fn set_accessible_parent( &self, parent: Option<&impl IsA<Accessible>>, next_sibling: Option<&impl IsA<Accessible>> )

Available on crate feature v4_10 only.
Sets the parent and sibling of an accessible object. Read more
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fn update_next_accessible_sibling( &self, new_sibling: Option<&impl IsA<Accessible>> )

Available on crate feature v4_10 only.
Updates the next accessible sibling of @self. Read more
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fn set_accessible_role(&self, accessible_role: AccessibleRole)

The accessible role of the given Accessible implementation. Read more
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fn connect_accessible_role_notify<F: Fn(&Self) + 'static>( &self, f: F ) -> SignalHandlerId

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impl<O> AccessibleExtManual for O
where O: IsA<Accessible>,

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fn update_property(&self, properties: &[Property<'_>])

Updates an array of accessible properties. Read more
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fn update_relation(&self, relations: &[Relation<'_>])

Updates an array of accessible relations. Read more
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fn update_state(&self, states: &[State])

Updates an array of accessible states. Read more
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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> Cast for T
where T: ObjectType,

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fn upcast<T>(self) -> T
where T: ObjectType, Self: IsA<T>,

Upcasts an object to a superclass or interface T. Read more
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fn upcast_ref<T>(&self) -> &T
where T: ObjectType, Self: IsA<T>,

Upcasts an object to a reference of its superclass or interface T. Read more
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fn downcast<T>(self) -> Result<T, Self>
where T: ObjectType, Self: MayDowncastTo<T>,

Tries to downcast to a subclass or interface implementor T. Read more
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fn downcast_ref<T>(&self) -> Option<&T>
where T: ObjectType, Self: MayDowncastTo<T>,

Tries to downcast to a reference of its subclass or interface implementor T. Read more
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fn dynamic_cast<T>(self) -> Result<T, Self>
where T: ObjectType,

Tries to cast to an object of type T. This handles upcasting, downcasting and casting between interface and interface implementors. All checks are performed at runtime, while upcast will do many checks at compile-time already. downcast will perform the same checks at runtime as dynamic_cast, but will also ensure some amount of compile-time safety. Read more
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fn dynamic_cast_ref<T>(&self) -> Option<&T>
where T: ObjectType,

Tries to cast to reference to an object of type T. This handles upcasting, downcasting and casting between interface and interface implementors. All checks are performed at runtime, while downcast and upcast will do many checks at compile-time already. Read more
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unsafe fn unsafe_cast<T>(self) -> T
where T: ObjectType,

Casts to T unconditionally. Read more
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unsafe fn unsafe_cast_ref<T>(&self) -> &T
where T: ObjectType,

Casts to &T unconditionally. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T> FromGlibContainerAsVec<<T as GlibPtrDefault>::GlibType, *const GList> for T

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unsafe fn from_glib_none_num_as_vec(ptr: *const GList, num: usize) -> Vec<T>

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unsafe fn from_glib_container_num_as_vec(_: *const GList, _: usize) -> Vec<T>

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unsafe fn from_glib_full_num_as_vec(_: *const GList, _: usize) -> Vec<T>

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impl<T> FromGlibContainerAsVec<<T as GlibPtrDefault>::GlibType, *const GPtrArray> for T

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unsafe fn from_glib_none_num_as_vec(ptr: *const GPtrArray, num: usize) -> Vec<T>

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unsafe fn from_glib_container_num_as_vec( _: *const GPtrArray, _: usize ) -> Vec<T>

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unsafe fn from_glib_full_num_as_vec(_: *const GPtrArray, _: usize) -> Vec<T>

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impl<T> FromGlibContainerAsVec<<T as GlibPtrDefault>::GlibType, *const GSList> for T

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unsafe fn from_glib_none_num_as_vec(ptr: *const GSList, num: usize) -> Vec<T>

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unsafe fn from_glib_container_num_as_vec(_: *const GSList, _: usize) -> Vec<T>

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unsafe fn from_glib_full_num_as_vec(_: *const GSList, _: usize) -> Vec<T>

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impl<T> FromGlibContainerAsVec<<T as GlibPtrDefault>::GlibType, *mut GList> for T

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unsafe fn from_glib_none_num_as_vec(ptr: *mut GList, num: usize) -> Vec<T>

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unsafe fn from_glib_container_num_as_vec(ptr: *mut GList, num: usize) -> Vec<T>

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unsafe fn from_glib_full_num_as_vec(ptr: *mut GList, num: usize) -> Vec<T>

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impl<T> FromGlibContainerAsVec<<T as GlibPtrDefault>::GlibType, *mut GPtrArray> for T

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unsafe fn from_glib_none_num_as_vec(ptr: *mut GPtrArray, num: usize) -> Vec<T>

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unsafe fn from_glib_container_num_as_vec( ptr: *mut GPtrArray, num: usize ) -> Vec<T>

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unsafe fn from_glib_full_num_as_vec(ptr: *mut GPtrArray, num: usize) -> Vec<T>

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impl<T> FromGlibContainerAsVec<<T as GlibPtrDefault>::GlibType, *mut GSList> for T

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unsafe fn from_glib_none_num_as_vec(ptr: *mut GSList, num: usize) -> Vec<T>

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unsafe fn from_glib_container_num_as_vec(ptr: *mut GSList, num: usize) -> Vec<T>

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unsafe fn from_glib_full_num_as_vec(ptr: *mut GSList, num: usize) -> Vec<T>

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impl<T> FromGlibPtrArrayContainerAsVec<<T as GlibPtrDefault>::GlibType, *const GList> for T

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unsafe fn from_glib_none_as_vec(ptr: *const GList) -> Vec<T>

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unsafe fn from_glib_container_as_vec(_: *const GList) -> Vec<T>

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unsafe fn from_glib_full_as_vec(_: *const GList) -> Vec<T>

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impl<T> FromGlibPtrArrayContainerAsVec<<T as GlibPtrDefault>::GlibType, *const GPtrArray> for T

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unsafe fn from_glib_none_as_vec(ptr: *const GPtrArray) -> Vec<T>

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unsafe fn from_glib_container_as_vec(_: *const GPtrArray) -> Vec<T>

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unsafe fn from_glib_full_as_vec(_: *const GPtrArray) -> Vec<T>

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impl<T> FromGlibPtrArrayContainerAsVec<<T as GlibPtrDefault>::GlibType, *const GSList> for T

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unsafe fn from_glib_none_as_vec(ptr: *const GSList) -> Vec<T>

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unsafe fn from_glib_container_as_vec(_: *const GSList) -> Vec<T>

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unsafe fn from_glib_full_as_vec(_: *const GSList) -> Vec<T>

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impl<T> FromGlibPtrArrayContainerAsVec<<T as GlibPtrDefault>::GlibType, *mut GList> for T

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unsafe fn from_glib_none_as_vec(ptr: *mut GList) -> Vec<T>

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unsafe fn from_glib_container_as_vec(ptr: *mut GList) -> Vec<T>

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unsafe fn from_glib_full_as_vec(ptr: *mut GList) -> Vec<T>

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impl<T> FromGlibPtrArrayContainerAsVec<<T as GlibPtrDefault>::GlibType, *mut GPtrArray> for T

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unsafe fn from_glib_none_as_vec(ptr: *mut GPtrArray) -> Vec<T>

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unsafe fn from_glib_container_as_vec(ptr: *mut GPtrArray) -> Vec<T>

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unsafe fn from_glib_full_as_vec(ptr: *mut GPtrArray) -> Vec<T>

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impl<T> FromGlibPtrArrayContainerAsVec<<T as GlibPtrDefault>::GlibType, *mut GSList> for T

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unsafe fn from_glib_none_as_vec(ptr: *mut GSList) -> Vec<T>

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unsafe fn from_glib_container_as_vec(ptr: *mut GSList) -> Vec<T>

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unsafe fn from_glib_full_as_vec(ptr: *mut GSList) -> Vec<T>

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impl<O> GObjectPropertyExpressionExt for O
where O: IsA<Object>,

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fn property_expression(&self, property_name: &str) -> PropertyExpression

Create an expression looking up an object’s property.
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fn property_expression_weak(&self, property_name: &str) -> PropertyExpression

Create an expression looking up an object’s property with a weak reference.
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fn this_expression(property_name: &str) -> PropertyExpression

Create an expression looking up a property in the bound this object.
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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> IntoClosureReturnValue for T
where T: Into<Value>,

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impl<T> ObjectExt for T
where T: ObjectType,

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fn is<U>(&self) -> bool
where U: StaticType,

Returns true if the object is an instance of (can be cast to) T.
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fn type_(&self) -> Type

Returns the type of the object.
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fn object_class(&self) -> &Class<Object>

Returns the ObjectClass of the object. Read more
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fn class(&self) -> &Class<T>
where T: IsClass,

Returns the class of the object.
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fn class_of<U>(&self) -> Option<&Class<U>>
where U: IsClass,

Returns the class of the object in the given type T. Read more
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fn interface<U>(&self) -> Option<InterfaceRef<'_, U>>
where U: IsInterface,

Returns the interface T of the object. Read more
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fn set_property(&self, property_name: &str, value: impl Into<Value>)

Sets the property property_name of the object to value value. Read more
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fn set_property_from_value(&self, property_name: &str, value: &Value)

Sets the property property_name of the object to value value. Read more
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fn set_properties(&self, property_values: &[(&str, &dyn ToValue)])

Sets multiple properties of the object at once. Read more
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fn set_properties_from_value(&self, property_values: &[(&str, Value)])

Sets multiple properties of the object at once. Read more
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fn property<V>(&self, property_name: &str) -> V
where V: for<'b> FromValue<'b> + 'static,

Gets the property property_name of the object and cast it to the type V. Read more
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fn property_value(&self, property_name: &str) -> Value

Gets the property property_name of the object. Read more
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fn has_property(&self, property_name: &str, type_: Option<Type>) -> bool

Check if the object has a property property_name of the given type_. Read more
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fn property_type(&self, property_name: &str) -> Option<Type>

Get the type of the property property_name of this object. Read more
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fn find_property(&self, property_name: &str) -> Option<ParamSpec>

Get the ParamSpec of the property property_name of this object.
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fn list_properties(&self) -> PtrSlice<ParamSpec>

Return all ParamSpec of the properties of this object.
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fn freeze_notify(&self) -> PropertyNotificationFreezeGuard

Freeze all property notifications until the return guard object is dropped. Read more
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unsafe fn set_qdata<QD>(&self, key: Quark, value: QD)
where QD: 'static,

Set arbitrary data on this object with the given key. Read more
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unsafe fn qdata<QD>(&self, key: Quark) -> Option<NonNull<QD>>
where QD: 'static,

Return previously set arbitrary data of this object with the given key. Read more
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unsafe fn steal_qdata<QD>(&self, key: Quark) -> Option<QD>
where QD: 'static,

Retrieve previously set arbitrary data of this object with the given key. Read more
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unsafe fn set_data<QD>(&self, key: &str, value: QD)
where QD: 'static,

Set arbitrary data on this object with the given key. Read more
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unsafe fn data<QD>(&self, key: &str) -> Option<NonNull<QD>>
where QD: 'static,

Return previously set arbitrary data of this object with the given key. Read more
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unsafe fn steal_data<QD>(&self, key: &str) -> Option<QD>
where QD: 'static,

Retrieve previously set arbitrary data of this object with the given key. Read more
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fn block_signal(&self, handler_id: &SignalHandlerId)

Block a given signal handler. Read more
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fn unblock_signal(&self, handler_id: &SignalHandlerId)

Unblock a given signal handler.
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fn stop_signal_emission(&self, signal_id: SignalId, detail: Option<Quark>)

Stop emission of the currently emitted signal.
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fn stop_signal_emission_by_name(&self, signal_name: &str)

Stop emission of the currently emitted signal by the (possibly detailed) signal name.
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fn connect<F>( &self, signal_name: &str, after: bool, callback: F ) -> SignalHandlerId
where F: Fn(&[Value]) -> Option<Value> + Send + Sync + 'static,

Connect to the signal signal_name on this object. Read more
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fn connect_id<F>( &self, signal_id: SignalId, details: Option<Quark>, after: bool, callback: F ) -> SignalHandlerId
where F: Fn(&[Value]) -> Option<Value> + Send + Sync + 'static,

Connect to the signal signal_id on this object. Read more
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fn connect_local<F>( &self, signal_name: &str, after: bool, callback: F ) -> SignalHandlerId
where F: Fn(&[Value]) -> Option<Value> + 'static,

Connect to the signal signal_name on this object. Read more
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fn connect_local_id<F>( &self, signal_id: SignalId, details: Option<Quark>, after: bool, callback: F ) -> SignalHandlerId
where F: Fn(&[Value]) -> Option<Value> + 'static,

Connect to the signal signal_id on this object. Read more
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unsafe fn connect_unsafe<F>( &self, signal_name: &str, after: bool, callback: F ) -> SignalHandlerId
where F: Fn(&[Value]) -> Option<Value>,

Connect to the signal signal_name on this object. Read more
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unsafe fn connect_unsafe_id<F>( &self, signal_id: SignalId, details: Option<Quark>, after: bool, callback: F ) -> SignalHandlerId
where F: Fn(&[Value]) -> Option<Value>,

Connect to the signal signal_id on this object. Read more
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fn connect_closure( &self, signal_name: &str, after: bool, closure: RustClosure ) -> SignalHandlerId

Connect a closure to the signal signal_name on this object. Read more
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fn connect_closure_id( &self, signal_id: SignalId, details: Option<Quark>, after: bool, closure: RustClosure ) -> SignalHandlerId

Connect a closure to the signal signal_id on this object. Read more
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fn watch_closure(&self, closure: &impl AsRef<Closure>)

Limits the lifetime of closure to the lifetime of the object. When the object’s reference count drops to zero, the closure will be invalidated. An invalidated closure will ignore any calls to invoke_with_values, or invoke when using Rust closures.
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fn emit<R>(&self, signal_id: SignalId, args: &[&dyn ToValue]) -> R

Emit signal by signal id. Read more
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fn emit_with_values(&self, signal_id: SignalId, args: &[Value]) -> Option<Value>

Same as Self::emit but takes Value for the arguments.
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fn emit_by_name<R>(&self, signal_name: &str, args: &[&dyn ToValue]) -> R

Emit signal by its name. Read more
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fn emit_by_name_with_values( &self, signal_name: &str, args: &[Value] ) -> Option<Value>

Emit signal by its name. Read more
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fn emit_by_name_with_details<R>( &self, signal_name: &str, details: Quark, args: &[&dyn ToValue] ) -> R

Emit signal by its name with details. Read more
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fn emit_by_name_with_details_and_values( &self, signal_name: &str, details: Quark, args: &[Value] ) -> Option<Value>

Emit signal by its name with details. Read more
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fn emit_with_details<R>( &self, signal_id: SignalId, details: Quark, args: &[&dyn ToValue] ) -> R

Emit signal by signal id with details. Read more
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fn emit_with_details_and_values( &self, signal_id: SignalId, details: Quark, args: &[Value] ) -> Option<Value>

Emit signal by signal id with details. Read more
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fn disconnect(&self, handler_id: SignalHandlerId)

Disconnect a previously connected signal handler.
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fn connect_notify<F>(&self, name: Option<&str>, f: F) -> SignalHandlerId
where F: Fn(&T, &ParamSpec) + Send + Sync + 'static,

Connect to the notify signal of the object. Read more
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fn connect_notify_local<F>(&self, name: Option<&str>, f: F) -> SignalHandlerId
where F: Fn(&T, &ParamSpec) + 'static,

Connect to the notify signal of the object. Read more
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unsafe fn connect_notify_unsafe<F>( &self, name: Option<&str>, f: F ) -> SignalHandlerId
where F: Fn(&T, &ParamSpec),

Connect to the notify signal of the object. Read more
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fn notify(&self, property_name: &str)

Notify that the given property has changed its value. Read more
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fn notify_by_pspec(&self, pspec: &ParamSpec)

Notify that the given property has changed its value. Read more
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fn downgrade(&self) -> WeakRef<T>

Downgrade this object to a weak reference.
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fn add_weak_ref_notify<F>(&self, f: F) -> WeakRefNotify<T>
where F: FnOnce() + Send + 'static,

Add a callback to be notified when the Object is disposed.
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fn add_weak_ref_notify_local<F>(&self, f: F) -> WeakRefNotify<T>
where F: FnOnce() + 'static,

Add a callback to be notified when the Object is disposed. Read more
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fn bind_property<'a, 'f, 't, O>( &'a self, source_property: &'a str, target: &'a O, target_property: &'a str ) -> BindingBuilder<'a, 'f, 't>
where O: ObjectType,

Bind property source_property on this object to the target_property on the target object. Read more
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fn ref_count(&self) -> u32

Returns the strong reference count of this object.
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unsafe fn run_dispose(&self)

Runs the dispose mechanism of the object. Read more
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impl<T> Property for T
where T: HasParamSpec,

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type Value = T

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impl<T> PropertyGet for T
where T: HasParamSpec,

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type Value = T

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fn get<R, F>(&self, f: F) -> R
where F: Fn(&<T as PropertyGet>::Value) -> R,

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impl<T> StaticTypeExt for T
where T: StaticType,

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fn ensure_type()

Ensures that the type has been registered with the type system.
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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T> TransparentType for T

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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T> TryFromClosureReturnValue for T
where T: for<'a> FromValue<'a> + StaticType + 'static,

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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<'a, T, C, E> FromValueOptional<'a> for T
where T: FromValue<'a, Checker = C>, C: ValueTypeChecker<Error = ValueTypeMismatchOrNoneError<E>>, E: Error + Send + 'static,

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impl<Super, Sub> MayDowncastTo<Sub> for Super
where Super: IsA<Super>, Sub: IsA<Super>,