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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 | 1x 119x 119x 277x 277x 277x 277x 74x 84x 470x 470x 1x 1x 470x 470x 91x 91x 470x | import { MouseCursor } from '.';
const ELEMENT_CURSORS_MAP = Symbol('ElementCursorsMap');
/*
* Public Methods
*/
function initElementCursor(
element: HTMLDivElement,
cursor: MouseCursor | null
): void {
_getElementCursors(element)[0] = cursor;
_setElementCursor(element, cursor);
}
function _setElementCursor(
element: HTMLDivElement,
cursor: MouseCursor | null
): void {
const cursors = _getElementCursors(element);
cursors[1] = cursors[0];
cursors[0] = cursor;
element.style.cursor = (
cursor instanceof MouseCursor
? cursor
: MouseCursor.getDefinedCursor('auto')
).getStyleProperty();
}
function resetElementCursor(element: HTMLDivElement): void {
_setElementCursor(element, _getElementCursors(element)[1]);
}
function hideElementCursor(element: HTMLDivElement): void {
_setElementCursor(element, MouseCursor.getDefinedCursor('none'));
}
/*
* Helpers
*/
function _getElementCursors(
element: HTMLDivElement
): [MouseCursor | null, MouseCursor | null] {
let map = _getElementCursors[ELEMENT_CURSORS_MAP];
if (!(map instanceof WeakMap)) {
map = new WeakMap();
Object.defineProperty(_getElementCursors, ELEMENT_CURSORS_MAP, {
value: map,
});
}
let cursors = map.get(element);
if (!cursors) {
cursors = [null, null];
map.set(element, cursors);
}
return cursors;
}
/*
* Exports
*/
export {
initElementCursor,
resetElementCursor,
hideElementCursor,
_setElementCursor as setElementCursor,
};
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