Flight-with-observable-state NPM

flight-with-observable-state

A Flight mixin which extends the flight-with-state mixin by exposing the component's state as an observable stream.

Installation

npm install --save flight-with-observable-state

This module requires flightjs, rx and flight-with-state as a peer dependencies.

Example

Here's an example component that uses withObservableState.

var ToggleButton = flight.component(
    // Use `withObservableState` before your component definition.
    withObservableState,
    function toggleButton() {
        this.attributes({
            initiallyActive: false
        });

        // Define an instance's `initialState`
        this.initialState({
            active: false
        });

        this.after('initialize', function () {
            this.on('click', this.toggle);

            // Subscribe to a stream of the changing state
            this.observableState.subscribe(this.update.bind(this));

            // Transition the state using `replaceState`
            this.replaceState({
                active: this.attr.initiallyActive
            });
        });

        this.toggle = function () {
            // Merge changes onto the state using `mergeState`
            this.mergeState({
                // Access the current state using `this.state`
                active: !this.state.active
            });
        };

        this.update = function (state) {
            this.$node.toggleClass('is-active', state.active);
        };
    }
);

API

withObservableState includes the flight-with-state mixin, and as such provides all of those methods as part of its API. You do not need to include withState in your own component. withObservableState also introduces the observableState property.

`observableState`

observableState property provides an observable stream of the component's changing state. In actuality it is an instance of a RXJS Observable connected to a RXJS BehaviourSubject.