Struct DragSim 

pub struct DragSim<T: Clone + 'static> { /* private fields */ }

Headless driver for one provider’s drag world. Every method takes the VirtualDom so the underlying signal operations run inside its runtime; call rerender between actions and markup assertions.

Implementations

impl<T: Clone + PartialEq + 'static> DragSim<T>

pub fn place(&self, dom: &VirtualDom, zone: ZoneId, rect: Rect)

Give a zone its client rect - the headless stand-in for layout.

Panics

Panics when no zone with this id is registered.

pub fn window_key(&self) -> Option<WindowKey>

The key this sim’s provider joined its world under, when it did.

pub fn place_in( &self, dom: &VirtualDom, window: WindowKey, zone: ZoneId, rect: Rect, )

Self::place for a zone living in another joined window’s registry - rect is in that window’s client px.

Panics

Panics when this sim’s provider joined no world, the window is unknown, or the zone isn’t registered there.

pub fn pick_up(&mut self, dom: &VirtualDom, payload: T)

Begin a pointer drag carrying payload, from no particular zone.

pub fn pick_up_from( &mut self, dom: &VirtualDom, payload: T, from: Option<ZoneId>, )

Begin a pointer drag, reporting from as the source zone (arrives in DropOutcome::from).

pub fn move_to(&mut self, dom: &VirtualDom, point: Point)

Move the pointer: updates the tracked position and enters/leaves zones by hit-testing the placed rects - the same logic the pointer gesture runs per pointermove.

pub fn release(&mut self, dom: &VirtualDom) -> Option<ZoneId>

Release at the current pointer position. Returns the zone that received the drop, or None when the drag cancelled (no acceptable zone under the pointer, and none with an edge within the 48px snap).

pub fn release_as( &mut self, dom: &VirtualDom, effect: DropEffect, ) -> Option<ZoneId>

Self::release with an explicit effect - simulate the Ctrl-held copy drop with DropEffect::Copy.

pub fn cancel(&mut self, dom: &VirtualDom)

Abort the drag, as Escape or a pointer cancel would.

pub fn completions(&self, dom: &VirtualDom) -> Vec<bool>

Exactly-once source completion results observed by the simulated source (true for delivered, false for cancelled).

pub fn over(&self, dom: &VirtualDom) -> Option<ZoneId>

The zone currently hovered.

pub fn dragging(&self, dom: &VirtualDom) -> bool

Is a drag in flight?

pub fn payload(&self, dom: &VirtualDom) -> Option<T>

The in-flight payload, if any.

pub fn announcement(&self, dom: &VirtualDom) -> String

The latest screen-reader announcement.

Trait Implementations

impl<T: Clone + 'static> Clone for DragSim<T>

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<T: Clone + 'static> Copy for DragSim<T>