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 王天杨
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import { useConstant } from '../../utils/use-constant.mjs';
/**
* Can manually trigger a drag gesture on one or more `drag`-enabled `motion` components.
*
* ```jsx
* const dragControls = useDragControls()
*
* function startDrag(event) {
* dragControls.start(event, { snapToCursor: true })
* }
*
* return (
* <>
* <div onPointerDown={startDrag} />
* <motion.div drag="x" dragControls={dragControls} />
* </>
* )
* ```
*
* @public
*/
class DragControls {
constructor() {
this.componentControls = new Set();
}
/**
* Subscribe a component's internal `VisualElementDragControls` to the user-facing API.
*
* @internal
*/
subscribe(controls) {
this.componentControls.add(controls);
return () => this.componentControls.delete(controls);
}
/**
* Start a drag gesture on every `motion` component that has this set of drag controls
* passed into it via the `dragControls` prop.
*
* ```jsx
* dragControls.start(e, {
* snapToCursor: true
* })
* ```
*
* @param event - PointerEvent
* @param options - Options
*
* @public
*/
start(event, options) {
this.componentControls.forEach((controls) => {
controls.start(event.nativeEvent || event, options);
});
}
/**
* Cancels a drag gesture.
*
* ```jsx
* dragControls.cancel()
* ```
*
* @public
*/
cancel() {
this.componentControls.forEach((controls) => {
controls.cancel();
});
}
/**
* Stops a drag gesture.
*
* ```jsx
* dragControls.stop()
* ```
*
* @public
*/
stop() {
this.componentControls.forEach((controls) => {
controls.stop();
});
}
}
const createDragControls = () => new DragControls();
/**
* Usually, dragging is initiated by pressing down on a `motion` component with a `drag` prop
* and moving it. For some use-cases, for instance clicking at an arbitrary point on a video scrubber, we
* might want to initiate that dragging from a different component than the draggable one.
*
* By creating a `dragControls` using the `useDragControls` hook, we can pass this into
* the draggable component's `dragControls` prop. It exposes a `start` method
* that can start dragging from pointer events on other components.
*
* ```jsx
* const dragControls = useDragControls()
*
* function startDrag(event) {
* dragControls.start(event, { snapToCursor: true })
* }
*
* return (
* <>
* <div onPointerDown={startDrag} />
* <motion.div drag="x" dragControls={dragControls} />
* </>
* )
* ```
*
* @public
*/
function useDragControls() {
return useConstant(createDragControls);
}
export { DragControls, useDragControls };
//# sourceMappingURL=use-drag-controls.mjs.map
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