@reactivex/rxjs/dist/amd/scheduler/AnimationFrameAction.js

Reactive Extensions for modern JavaScript

var __extends = (this && this.__extends) || function (d, b) {
    for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p];
    function __() { this.constructor = d; }
    d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
};
define(["require", "exports", './FutureAction', '../util/AnimationFrame'], function (require, exports, FutureAction_1, AnimationFrame_1) {
    "use strict";
    /**
     * We need this JSDoc comment for affecting ESDoc.
     * @ignore
     * @extends {Ignored}
     */
    var AnimationFrameAction = (function (_super) {
        __extends(AnimationFrameAction, _super);
        function AnimationFrameAction() {
            _super.apply(this, arguments);
        }
        AnimationFrameAction.prototype._schedule = function (state, delay) {
            if (delay === void 0) { delay = 0; }
            if (delay > 0) {
                return _super.prototype._schedule.call(this, state, delay);
            }
            this.delay = delay;
            this.state = state;
            var scheduler = this.scheduler;
            scheduler.actions.push(this);
            if (!scheduler.scheduledId) {
                scheduler.scheduledId = AnimationFrame_1.AnimationFrame.requestAnimationFrame(function () {
                    scheduler.scheduledId = null;
                    scheduler.flush();
                });
            }
            return this;
        };
        AnimationFrameAction.prototype._unsubscribe = function () {
            var scheduler = this.scheduler;
            var scheduledId = scheduler.scheduledId, actions = scheduler.actions;
            _super.prototype._unsubscribe.call(this);
            if (actions.length === 0) {
                scheduler.active = false;
                if (scheduledId != null) {
                    scheduler.scheduledId = null;
                    AnimationFrame_1.AnimationFrame.cancelAnimationFrame(scheduledId);
                }
            }
        };
        return AnimationFrameAction;
    }(FutureAction_1.FutureAction));
    exports.AnimationFrameAction = AnimationFrameAction;
});
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