table = (data, options) => { options = Object.assign({}, defaultOptions, options); const { sortable, rank, paged } = options; let sortKey = undefined; let sortDirection = true; let page = 0; if (sortable && rank) { throw new Error("A table can either be ranked or sortable, but not both"); } let columns = Object.keys(data[0]).map(key => { const opts = options.columns[key] || {}; return { key: key, type: opts.type || typeof data[0][key], options: opts }; }); function bake() { if (sortKey) { data = data.slice().sort((a, b) => { let as = a[sortKey]; let bs = b[sortKey]; // make this sort stable if (as == bs) return JSON.stringify(a).localeCompare(JSON.stringify(b)); let res = as > bs ? 1 : as < bs ? -1 : 0; if (sortDirection) res = -res; return res; }); } let offset = page * paged; let rows = data.slice(offset, offset + (paged || data.length)); let pages = paged ? Math.ceil(data.length / paged) : 1; return html`

${ options.header === false ? `` : html` ${rank ? html`` : ""} ${columns.map(c => { return th(c, sortKey, sortDirection, sortable); })} ` } ${rows.map( (row, i) => html` ${rank ? html`` : ""} ${columns.map(c => { let displayValue = (c.options.formatter || identity)( row[c.key], i, row ); if ( displayValue instanceof window.HTMLElement && displayValue.tagName == "TD" ) { return displayValue; } return html``; })} ` )}


${offset + i + 1}	${displayValue}

${ pages > 1 ? html`` : "" }

`; } let dom = bake(); function rerender() { dom.firstChild.remove(); dom.appendChild(bake().firstChild); } dom.addEventListener("click", e => { if (e.target.tagName === "TH" && sortable) { if (sortKey == e.target.dataset.key) { sortDirection = !sortDirection; } sortKey = e.target.dataset.key; rerender(); } if (e.target.tagName === "BUTTON") { if (e.target.dataset.action) { switch (e.target.dataset.action) { case "next": page++, rerender(); break; case "previous": page--, rerender(); break; } } else if (e.target.dataset.page) { (page = parseInt(e.target.dataset.page)), rerender(); } } }); return dom; }