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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
import { ifDefined, html } from "../vendor/lit.all.mjs";
import { MozLitElement } from "../lit-utils.mjs";
window.MozXULElement?.insertFTLIfNeeded("toolkit/global/mozFiveStar.ftl");
/**
* The visual representation is five stars, each of them either empty,
* half-filled or full. The fill state is derived from the rating,
* rounded to the nearest half.
*
* @tagname moz-five-star
* @property {number} rating - The rating out of 5.
* @property {string} title - The title text.
*/
export default class MozFiveStar extends MozLitElement {
static properties = {
rating: { type: Number, reflect: true },
title: { type: String },
};
static get queries() {
return {
starEls: { all: ".rating-star" },
starsWrapperEl: ".stars",
};
}
getStarsFill() {
let starFill = [];
let roundedRating = Math.round(this.rating * 2) / 2;
for (let i = 1; i <= 5; i++) {
if (i <= roundedRating) {
starFill.push("full");
} else if (i - roundedRating === 0.5) {
starFill.push("half");
} else {
starFill.push("empty");
}
}
return starFill;
}
render() {
let starFill = this.getStarsFill();
return html`
<link
rel="stylesheet"
href="chrome://global/content/elements/moz-five-star.css"
/>
<div
class="stars"
role="img"
data-l10n-id=${ifDefined(
this.title ? undefined : "moz-five-star-rating"
)}
data-l10n-args=${ifDefined(
this.title ? undefined : JSON.stringify({ rating: this.rating ?? 0 })
)}
>
${starFill.map(
fill => html`<span class="rating-star" fill="${fill}"></span>`
)}
</div>
`;
}
}
customElements.define("moz-five-star", MozFiveStar);
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