'use strict';
exports.__esModule = true;
exports['default'] = bufferWhen;
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { 'default': obj }; }
function _inherits(subClass, superClass) { Iif (typeof superClass !== 'function' && superClass !== null) { throw new TypeError('Super expression must either be null or a function, not ' + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); Eif (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }
function _classCallCheck(instance, Constructor) { Iif (!(instance instanceof Constructor)) { throw new TypeError('Cannot call a class as a function'); } }
var _Subscriber3 = require('../Subscriber');
var _Subscriber4 = _interopRequireDefault(_Subscriber3);
var _utilTryCatch = require('../util/tryCatch');
var _utilTryCatch2 = _interopRequireDefault(_utilTryCatch);
var _utilErrorObject = require('../util/errorObject');
/**
* Opens a buffer immediately, then closes the buffer when the observable returned by calling `closingSelector` emits a value.
* It that immediately opens a new buffer and repeats the process
* @param {function} a function that takes no arguments and returns an Observable that signals buffer closure
* @returns {Observable<T[]>} an observable of arrays of buffered values.
*/
function bufferWhen(closingSelector) {
return this.lift(new BufferWhenOperator(closingSelector));
}
var BufferWhenOperator = (function () {
function BufferWhenOperator(closingSelector) {
_classCallCheck(this, BufferWhenOperator);
this.closingSelector = closingSelector;
}
BufferWhenOperator.prototype.call = function call(subscriber) {
return new BufferWhenSubscriber(subscriber, this.closingSelector);
};
return BufferWhenOperator;
})();
var BufferWhenSubscriber = (function (_Subscriber) {
_inherits(BufferWhenSubscriber, _Subscriber);
function BufferWhenSubscriber(destination, closingSelector) {
_classCallCheck(this, BufferWhenSubscriber);
_Subscriber.call(this, destination);
this.closingSelector = closingSelector;
this.openBuffer();
}
BufferWhenSubscriber.prototype._next = function _next(value) {
this.buffer.push(value);
};
BufferWhenSubscriber.prototype._error = function _error(err) {
this.buffer = null;
this.destination.error(err);
};
BufferWhenSubscriber.prototype._complete = function _complete() {
var buffer = this.buffer;
this.destination.next(buffer);
this.buffer = null;
this.destination.complete();
};
BufferWhenSubscriber.prototype.openBuffer = function openBuffer() {
var prevClosingNotification = this.closingNotification;
if (prevClosingNotification) {
this.remove(prevClosingNotification);
prevClosingNotification.unsubscribe();
}
var buffer = this.buffer;
if (buffer) {
this.destination.next(buffer);
}
this.buffer = [];
var closingNotifier = _utilTryCatch2['default'](this.closingSelector)();
if (closingNotifier === _utilErrorObject.errorObject) {
var err = closingNotifier.e;
this.buffer = null;
this.destination.error(err);
} else {
this.add(this.closingNotification = closingNotifier._subscribe(new BufferClosingNotifierSubscriber(this)));
}
};
return BufferWhenSubscriber;
})(_Subscriber4['default']);
var BufferClosingNotifierSubscriber = (function (_Subscriber2) {
_inherits(BufferClosingNotifierSubscriber, _Subscriber2);
function BufferClosingNotifierSubscriber(parent) {
_classCallCheck(this, BufferClosingNotifierSubscriber);
_Subscriber2.call(this, null);
this.parent = parent;
}
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BufferClosingNotifierSubscriber.prototype._next = function _next() {
this.parent.openBuffer();
};
BufferClosingNotifierSubscriber.prototype._error = function _error(err) {
this.parent.error(err);
};
BufferClosingNotifierSubscriber.prototype._complete = function _complete() {
this.parent.openBuffer();
};
return BufferClosingNotifierSubscriber;
})(_Subscriber4['default']);
module.exports = exports['default'];
//# sourceMappingURL=bufferWhen.js.map |