oficina / sheets Public

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1	/* Send one atomic batch per 500 cells, with chunks and invocations in order.
2	* Concurrent writes lost paints when older replies were discarded.
3	* A final refetch still raced with live edits. Serial chunks avoid both;
4	* stop on the first failed chunk. */
5	(function () {
6	'use strict';
7
8	var tail = Promise.resolve();
9	window.SheetsCellQueue = function (jobs, post, done) {
10	var run = function () {
11	var i = 0;
12	function step() {
13	if (i >= jobs.length) { if (done) done(); return true; }
14	var cells = jobs.slice(i, i + 500);
15	i += cells.length;
16	return post('/cells/batch', { cells: cells }).then(function (ok) {
17	if (ok === true) return step();
18	return false;
19	}, function () { return false; });
20	}
21	return step();
22	};
23	tail = tail.then(run, run);
24	return tail;
25	};
26	}());
27