@e280/quay/x/logic/aspects/tree-trail.js

File-browser and outliner UI for the web

import { signal } from "@e280/strata";
export class TreeTrail {
    signal = signal([]);
    constructor(root) {
        this.signal([root]);
    }
    setTrail(e, item) {
        if (e.target !== e.currentTarget)
            return;
        const trail = [];
        let cur = item.kind === "folder"
            ? item
            : item.parent;
        while (cur) {
            trail.unshift(cur);
            cur = cur.parent;
        }
        this.signal(trail);
    }
    get currentFolder() {
        return this.signal().at(-1)?.children ?? [];
    }
}
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