Struct Map 

pub struct Map<A, W: Widget, F>
where
    F: for<'a> Fn(&'a A) -> &'a W::Data,
{
    pub inner: W,
    /* private fields */
}

Data mapping

This is a generic data-mapping widget-wrapper. See also Adapt, MapAny.

This struct is a thin wrapper around the inner widget without its own Id. It supports Deref and DerefMut to the inner widget.

Fields

inner: W

The inner widget

Implementations

impl<A, W: Widget, F> Map<A, W, F>

where F: for<'a> Fn(&'a A) -> &'a W::Data,

pub fn new(inner: W, map_fn: F) -> Self

Construct

• Over an inner widget
• And map_fn mapping to the inner widget’s data type

Trait Implementations

impl<A, W: Widget, F> Deref for Map<A, W, F>

where F: for<'a> Fn(&'a A) -> &'a W::Data,

type Target = W

The resulting type after dereferencing.

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

Dereferences the value.

impl<A, W: Widget, F> DerefMut for Map<A, W, F>

where F: for<'a> Fn(&'a A) -> &'a W::Data,

fn deref_mut(&mut self) -> &mut Self::Target

Mutably dereferences the value.

impl<A, W: Widget, F> Layout for Map<A, W, F>

where F: for<'a> Fn(&'a A) -> &'a W::Data,

fn rect(&self) -> Rect

Get the widget’s region

fn size_rules(&mut self, sizer: SizeCx<'_>, axis: AxisInfo) -> SizeRules

Get size rules for the given axis

fn set_rect(&mut self, cx: &mut ConfigCx<'_>, rect: Rect, hints: AlignHints)

Set size and position

fn try_probe(&self, coord: Coord) -> Option<Id>

Probe a coordinate for a widget’s Id

fn draw(&self, draw: DrawCx<'_>)

Draw a widget and its children

impl<A, W, F> Scrollable for Map<A, W, F>

where F: for<'a> Fn(&'a A) -> &'a W::Data, W: Scrollable + Widget,

fn content_size(&self) -> Size

Get the content size (the inner size of the scrolled pane)

fn max_scroll_offset(&self) -> Offset

Get the maximum scroll offset

fn scroll_offset(&self) -> Offset

Get the current scroll offset

fn set_scroll_offset(&mut self, cx: &mut EventCx<'_>, offset: Offset) -> Offset

Set the scroll offset

impl<A, W: Widget, F> Tile for Map<A, W, F>

where F: for<'a> Fn(&'a A) -> &'a W::Data,

fn as_tile(&self) -> &dyn Tile

Get as a dyn Tile

fn id_ref(&self) -> &Id

Get a reference to the widget’s identifier

fn id(&self) -> Id

Get the widget’s identifier

fn identify(&self) -> IdentifyWidget<'_>

Return a Display-able widget identifier

fn child_indices(&self) -> ChildIndices

Get child indices available to recursion

fn get_child(&self, index: usize) -> Option<&dyn Tile>

Access a child as a dyn Tile, if available

fn find_child_index(&self, id: &Id) -> Option<usize>

Find the child which is an ancestor of this id, if any

fn nav_next(&self, reverse: bool, from: Option<usize>) -> Option<usize>

Navigation in spatial order

fn translation(&self, index: usize) -> Offset

Get translation of child index relative to this widget

fn probe(&self, coord: Coord) -> Id

where Self: Sized,

Probe a coordinate for a widget’s Id

fn role(&self, cx: &mut dyn RoleCx) -> Role<'_>

Describe the widget’s role

fn navigable(&self) -> bool

Whether this widget supports navigation focus

fn tooltip(&self) -> Option<&str>

Tooltip

fn role_child_properties(&self, cx: &mut dyn RoleCx, index: usize)

Specify additional role properties for child index

impl<A, W: Widget, F> Widget for Map<A, W, F>

where F: for<'a> Fn(&'a A) -> &'a W::Data,

type Data = A

Input data type

fn as_node<'__a>(&'__a mut self, data: &'__a Self::Data) -> Node<'__a>

Erase type

fn child_node<'__n>( &'__n mut self, data: &'__n Self::Data, index: usize, ) -> Option<Node<'__n>>

Access a child as a Node, if available