auru / redux-unity-router

import { PureComponent } from 'react';

import { DEFAULT_SLICE } from '../constants';

class BaseRouterComponent extends PureComponent {

    constructor(props, context) {

        super(props, context);

        const { store, router } = context;

        this.store = store;

        this.router = router;

        this.handleStoreChange = this.handleStoreChange.bind(this);

        this.unsubscribe = store && store.subscribe(this.handleStoreChange);

    }

    componentDidMount() {

        return this.handleStoreChange();

    }

    componentWillUnmount() {

        if (this.isSubscribed) {

            this.unsubscribe();

            delete this.unsubscribe;

        }

    }

    get isSubscribed() {

        return typeof this.unsubscribe === 'function';

    }

    handleStoreChange() { // eslint-disable-line class-methods-use-this

        throw new Error('this.handleStoreChange() should be implemented');

    }

    getStatefromStore() {

        const { slice = DEFAULT_SLICE, immutable } = this.router;

        const state = this.store.getState();

        return immutable ? state.get(slice) : state[slice];

    }

}

export default BaseRouterComponent;