Struct ItemRc

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

A ItemRc is holding a reference to a ItemTree containing the item, and the index of this item

Implementations

impl ItemRc

pub fn new(item_tree: VRc<ItemTreeVTable>, index: u32) -> Self

Create an ItemRc from a ItemTree and an index

pub fn is_root_item_of(&self, item_tree: &VRc<ItemTreeVTable>) -> bool

pub fn borrow<'a>(&'a self) -> Pin<ItemRef<'a>>

Return a Pin<ItemRef<'a>>

pub fn downcast<T: HasStaticVTable<ItemVTable>>( &self, ) -> Option<VRcMapped<ItemTreeVTable, T>>

Returns a VRcMapped of this item, to conveniently access specialized item API.

pub fn downgrade(&self) -> ItemWeak

pub fn parent_item(&self) -> Option<ItemRc>

Return the parent Item in the item tree.

If the item is a the root on its Window or PopupWindow, then the parent is None.

pub fn is_visible(&self) -> bool

Returns true if this item is visible from the root of the item tree. Note that this will return false for Clip elements with the clip property evaluating to true.

pub fn is_accessible(&self) -> bool

pub fn accessible_role(&self) -> AccessibleRole

pub fn accessible_string_property( &self, what: AccessibleStringProperty, ) -> Option<SharedString>

pub fn accessible_action(&self, action: &AccessibilityAction)

pub fn supported_accessibility_actions(&self) -> SupportedAccessibilityAction

pub fn element_count(&self) -> Option<usize>

pub fn element_type_names_and_ids( &self, element_index: usize, ) -> Option<Vec<(SharedString, SharedString)>>

pub fn geometry(&self) -> LogicalRect

pub fn map_to_window(&self, p: LogicalPoint) -> LogicalPoint

Returns an absolute position of p in the parent item coordinate system (does not add this item’s x and y)

pub fn map_to_item_tree( &self, p: LogicalPoint, item_tree: &VRc<ItemTreeVTable>, ) -> LogicalPoint

Returns an absolute position of p in the ItemTree’s coordinate system (does not add this item’s x and y)

pub fn index(&self) -> u32

Return the index of the item within the ItemTree

pub fn item_tree(&self) -> &VRc<ItemTreeVTable>

Returns a reference to the ItemTree holding this item

pub fn first_child(&self) -> Option<Self>

The first child Item of this Item

pub fn last_child(&self) -> Option<Self>

The last child Item of this Item

pub fn previous_sibling(&self) -> Option<Self>

The previous sibling of this Item

pub fn next_sibling(&self) -> Option<Self>

The next sibling of this Item

pub fn previous_focus_item(&self) -> Self

Move tab focus to the previous item:

pub fn next_focus_item(&self) -> Self

Move tab focus to the next item:

pub fn window_adapter(&self) -> Option<WindowAdapterRc>

pub fn visit_descendants<R>( &self, visitor: impl FnMut(&ItemRc) -> ControlFlow<R>, ) -> Option<R>

Visit the children of this element and call the visitor to each of them, until the visitor returns ControlFlow::Break. When the visitor breaks, the function returns the value. If it doesn’t break, the function returns None.

Trait Implementations

impl Clone for ItemRc

fn clone(&self) -> ItemRc

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for ItemRc

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

Formats the value using the given formatter.

impl PartialEq for ItemRc

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 Eq for ItemRc