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/**
* Abstract base class for implementations of the Observer class.
* This base class enforces the grammar of observers where OnError and OnCompleted are terminal messages.
*/
var AbstractObserver = Rx.internals.AbstractObserver = (function (__super__) {
inherits(AbstractObserver, __super__);
/**
* Creates a new observer in a non-stopped state.
*/
function AbstractObserver() {
this.isStopped = false;
__super__.call(this);
}
// Must be implemented by other observers
AbstractObserver.prototype.next = notImplemented;
AbstractObserver.prototype.error = notImplemented;
AbstractObserver.prototype.completed = notImplemented;
/**
* Notifies the observer of a new element in the sequence.
* @param {Any} value Next element in the sequence.
*/
AbstractObserver.prototype.onNext = function (value) {
if (!this.isStopped) { this.next(value); }
};
/**
* Notifies the observer that an exception has occurred.
* @param {Any} error The error that has occurred.
*/
AbstractObserver.prototype.onError = function (error) {
if (!this.isStopped) {
this.isStopped = true;
this.error(error);
}
};
/**
* Notifies the observer of the end of the sequence.
*/
AbstractObserver.prototype.onCompleted = function () {
if (!this.isStopped) {
this.isStopped = true;
this.completed();
}
};
/**
* Disposes the observer, causing it to transition to the stopped state.
*/
AbstractObserver.prototype.dispose = function () {
this.isStopped = true;
};
AbstractObserver.prototype.fail = function (e) {
if (!this.isStopped) {
this.isStopped = true;
this.error(e);
return true;
}
return false;
};
return AbstractObserver;
}(Observer));
Version data entries
14 entries across 7 versions & 1 rubygems