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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 { html } from '@polymer/lit-element';
import { PageViewElement } from './page-view-element.js';
import { connect } from 'pwa-helpers/connect-mixin.js';
// This element is connected to the Redux store.
import { store } from '../store.js';
// These are the actions needed by this element.
import { checkout } from '../actions/shop.js';
// We are lazy loading its reducer.
import shop, { cartQuantitySelector } from '../reducers/shop.js';
store.addReducers({
shop
});
// These are the elements needed by this element.
import './shop-products.js';
import './shop-cart.js';
// These are the shared styles needed by this element.
import { SharedStyles } from './shared-styles.js';
import { ButtonSharedStyles } from './button-shared-styles.js';
import { addToCartIcon } from './my-icons.js';
class MyView3 extends connect(store)(PageViewElement) {
_render({_quantity, _error}) {
return html`
${SharedStyles}
${ButtonSharedStyles}
<style>
/* Add more specificity (.checkout) to workaround an issue in lit-element:
https://github.com/PolymerLabs/lit-element/issues/34 */
button.checkout {
border: 2px solid var(--app-dark-text-color);
border-radius: 3px;
padding: 8px 16px;
}
button.checkout:hover {
border-color: var(--app-primary-color);
color: var(--app-primary-color);
}
.cart, .cart svg {
fill: var(--app-primary-color);
width: 64px;
height: 64px;
}
.circle.small {
margin-top: -72px;
width: 28px;
height: 28px;
font-size: 16px;
font-weight: bold;
line-height: 30px;
}
</style>
<section>
<h2>Redux example: shopping cart</h2>
<div class="cart">${addToCartIcon}<div class="circle small">${_quantity}</div></div>
<p>This is a slightly more advanced Redux example, that simulates a
shopping cart: getting the products, adding/removing items to the
cart, and a checkout action, that can sometimes randomly fail (to
simulate where you would add failure handling). </p>
<p>This view, as well as its 2 child elements, <code><shop-products></code> and
<code><shop-cart></code> are connected to the Redux store.</p>
</section>
<section>
<h3>Products</h3>
<shop-products></shop-products>
<br>
<h3>Your Cart</h3>
<shop-cart></shop-cart>
<div>${_error}</div>
<br>
<p>
<button class="checkout" hidden="${_quantity == 0}"
on-click="${() => store.dispatch(checkout())}">
Checkout
</button>
</p>
</section>
`;
}
static get properties() { return {
// This is the data from the store.
_quantity: Number,
_error: String
}}
// This is called every time something is updated in the store.
_stateChanged(state) {
this._quantity = cartQuantitySelector(state);
this._error = state.shop.error;
}
}
window.customElements.define('my-view3', MyView3);
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