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/**
@license
Copyright (c) 2018 The Polymer Project Authors. All rights reserved.
This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt
The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt
The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt
Code distributed by Google as part of the polymer project is also
subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt
*/
import { LitElement, html } from '@polymer/lit-element';
import { connect } from 'pwa-helpers/connect-mixin.js';
// This element is connected to the Redux store.
import { store } from '../store.js';
// These are the elements needed by this element.
import { removeFromCartIcon } from './my-icons.js';
import './shop-item.js';
// These are the actions needed by this element.
import { removeFromCart } from '../actions/shop.js';
// These are the reducers needed by this element.
import { cartItemsSelector, cartTotalSelector } from '../reducers/shop.js';
// These are the shared styles needed by this element.
import { ButtonSharedStyles } from './button-shared-styles.js';
class ShopCart extends connect(store)(LitElement) {
_render({_items, _total}) {
return html`
${ButtonSharedStyles}
<style>
:host { display: block; }
</style>
<p hidden="${_items.length !== 0}">Please add some products to cart.</p>
${_items.map((item) =>
html`
<div>
<shop-item name="${item.title}" amount="${item.amount}" price="${item.price}"></shop-item>
<button
on-click="${(e) => store.dispatch(removeFromCart(e.currentTarget.dataset['index']))}"
data-index$="${item.id}"
title="Remove from cart">
${removeFromCartIcon}
</button>
</div>
`
)}
<p hidden="${!_items.length}"><b>Total:</b> ${_total}</p>
`;
}
static get properties() { return {
_items: Array,
_total: Number
}}
// This is called every time something is updated in the store.
_stateChanged(state) {
this._items = cartItemsSelector(state);
this._total = cartTotalSelector(state);
}
}
window.customElements.define('shop-cart', ShopCart);
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