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"use strict";
var __extends = (this && this.__extends) || (function () {
var extendStatics = function (d, b) {
extendStatics = Object.setPrototypeOf ||
({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||
function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };
return extendStatics(d, b);
}
return function (d, b) {
extendStatics(d, b);
function __() { this.constructor = d; }
d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
};
})();
Object.defineProperty(exports, "__esModule", { value: true });
var Action_1 = require("./Action");
var AsyncAction = (function (_super) {
__extends(AsyncAction, _super);
function AsyncAction(scheduler, work) {
var _this = _super.call(this, scheduler, work) || this;
_this.scheduler = scheduler;
_this.work = work;
_this.pending = false;
return _this;
}
AsyncAction.prototype.schedule = function (state, delay) {
if (delay === void 0) { delay = 0; }
if (this.closed) {
return this;
}
this.state = state;
var id = this.id;
var scheduler = this.scheduler;
if (id != null) {
this.id = this.recycleAsyncId(scheduler, id, delay);
}
this.pending = true;
this.delay = delay;
this.id = this.id || this.requestAsyncId(scheduler, this.id, delay);
return this;
};
AsyncAction.prototype.requestAsyncId = function (scheduler, id, delay) {
if (delay === void 0) { delay = 0; }
return setInterval(scheduler.flush.bind(scheduler, this), delay);
};
AsyncAction.prototype.recycleAsyncId = function (scheduler, id, delay) {
if (delay === void 0) { delay = 0; }
if (delay !== null && this.delay === delay && this.pending === false) {
return id;
}
clearInterval(id);
return undefined;
};
AsyncAction.prototype.execute = function (state, delay) {
if (this.closed) {
return new Error('executing a cancelled action');
}
this.pending = false;
var error = this._execute(state, delay);
if (error) {
return error;
}
else if (this.pending === false && this.id != null) {
this.id = this.recycleAsyncId(this.scheduler, this.id, null);
}
};
AsyncAction.prototype._execute = function (state, delay) {
var errored = false;
var errorValue = undefined;
try {
this.work(state);
}
catch (e) {
errored = true;
errorValue = !!e && e || new Error(e);
}
if (errored) {
this.unsubscribe();
return errorValue;
}
};
AsyncAction.prototype._unsubscribe = function () {
var id = this.id;
var scheduler = this.scheduler;
var actions = scheduler.actions;
var index = actions.indexOf(this);
this.work = null;
this.state = null;
this.pending = false;
this.scheduler = null;
if (index !== -1) {
actions.splice(index, 1);
}
if (id != null) {
this.id = this.recycleAsyncId(scheduler, id, null);
}
this.delay = null;
};
return AsyncAction;
}(Action_1.Action));
exports.AsyncAction = AsyncAction;
//# sourceMappingURL=AsyncAction.js.map
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