molstar
Version:
A comprehensive macromolecular library.
54 lines • 1.83 kB
JavaScript
;
/**
* Copyright (c) 2019 mol* contributors, licensed under MIT, See LICENSE file for more info.
*
* @author David Sehnal <david.sehnal@gmail.com>
*/
Object.defineProperty(exports, "__esModule", { value: true });
exports.AsyncQueue = void 0;
var array_1 = require("./array");
var rxjs_1 = require("rxjs");
var AsyncQueue = /** @class */ (function () {
function AsyncQueue() {
this.queue = [];
this.signal = new rxjs_1.Subject();
}
Object.defineProperty(AsyncQueue.prototype, "length", {
get: function () { return this.queue.length; },
enumerable: false,
configurable: true
});
AsyncQueue.prototype.enqueue = function (v) {
this.queue.push(v);
if (this.queue.length === 1)
return true;
return this.waitFor(v);
};
AsyncQueue.prototype.handled = function (v) {
(0, array_1.arrayRemoveInPlace)(this.queue, v);
if (this.queue.length > 0) {
this.signal.next({ v: this.queue[0], stillPresent: true });
}
};
AsyncQueue.prototype.remove = function (v) {
var rem = (0, array_1.arrayRemoveInPlace)(this.queue, v);
if (rem)
this.signal.next({ v: v, stillPresent: false });
return rem;
};
AsyncQueue.prototype.waitFor = function (t) {
var _this = this;
return new Promise(function (res) {
var sub = _this.signal.subscribe(function (_a) {
var v = _a.v, removed = _a.stillPresent;
if (v === t) {
sub.unsubscribe();
res(removed);
}
});
});
};
return AsyncQueue;
}());
exports.AsyncQueue = AsyncQueue;
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