pub struct Tree { /* private fields */ }Expand description
A hierarchical tree view widget.
Supports expand/collapse via Enter/Space, keyboard navigation, and optional guide lines.
Implementations§
Trait Implementations§
Source§impl Component for Tree
impl Component for Tree
Source§fn measure(&self, _constraint: Constraint, _cx: &mut MeasureCx) -> Size
fn measure(&self, _constraint: Constraint, _cx: &mut MeasureCx) -> Size
测量组件在给定约束下的自适应尺寸 Read more
Source§fn layout(&mut self, rect: Rect, _cx: &mut LayoutCx<'_>)
fn layout(&mut self, rect: Rect, _cx: &mut LayoutCx<'_>)
布局回调——组件在此计算子节点 rect 并调用 child.layout() Read more
Source§fn for_each_child(&self, _f: &mut dyn FnMut(&Node))
fn for_each_child(&self, _f: &mut dyn FnMut(&Node))
遍历子节点(为焦点系统等提供统一的树遍历接口)
Source§fn for_each_child_mut(&mut self, _f: &mut dyn FnMut(&mut Node))
fn for_each_child_mut(&mut self, _f: &mut dyn FnMut(&mut Node))
遍历子节点(可变版本)
Auto Trait Implementations§
impl Freeze for Tree
impl RefUnwindSafe for Tree
impl Send for Tree
impl Sync for Tree
impl Unpin for Tree
impl UnsafeUnpin for Tree
impl UnwindSafe for Tree
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
Mutably borrows from an owned value. Read more