/* -*- indent-tabs-mode: nil; js-indent-level: 2 -*-
* 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 {
html,
ifDefined,
when,
} from "chrome://global/content/vendor/lit.all.mjs";
import { MozLitElement } from "chrome://global/content/lit-utils.mjs";
/**
* Cards contain content and actions about a single subject.
* There are two card types:
* The default type where no type attribute is required and the card
* will have no extra functionality.
*
* The "accordion" type will initially not show any content. The card
* will contain an arrow to expand the card so that all of the content
* is visible. You can use the "expanded" attribute to force the accordion
* card to show its content on initial render.
*
*
* @property {string} heading - The heading text that will be used for the card.
* @property {string} icon - (optional) A flag to indicate the header should include an icon
* @property {string} type - (optional) The type of card. No type specified
* will be the default card. The other available type is "accordion"
* @property {boolean} expanded - A flag to indicate whether the card is
* expanded or not. Can be used to expand the content section of the
* accordion card on initial render.
* @slot content - The content to show inside of the card.
*/
export default class MozCard extends MozLitElement {
static queries = {
detailsEl: "#moz-card-details",
headingEl: "#heading",
contentSlotEl: "#content",
};
static properties = {
heading: { type: String },
icon: { type: Boolean },
type: { type: String, reflect: true },
expanded: { type: Boolean },
};
constructor() {
super();
this.type = "default";
this.expanded = false;
}
headingTemplate() {
if (!this.heading) {
return "";
}
return html`
<div id="heading-wrapper">
${when(
this.type == "accordion",
() => html`<div class="chevron-icon"></div>`
)}
${when(
this.icon,
() =>
html`<div part="icon" id="heading-icon" role="presentation"></div>`
)}
<span id="heading" title=${ifDefined(this.heading)} part="heading"
>${this.heading}</span
>
</div>
`;
}
cardTemplate() {
if (this.type === "accordion") {
return html`
<details
id="moz-card-details"
@toggle="${this.onToggle}"
?open=${this.expanded}
>
<summary part="summary">${this.headingTemplate()}</summary>
<div id="content"><slot></slot></div>
</details>
`;
}
return html`
<div id="moz-card-details">
${this.headingTemplate()}
<div id="content" aria-describedby="content">
<slot></slot>
</div>
</div>
`;
}
onToggle() {
this.expanded = this.detailsEl.open;
this.dispatchEvent(
new ToggleEvent("toggle", {
newState: this.detailsEl.open ? "open" : "closed",
oldState: this.detailsEl.open ? "closed" : "open",
})
);
}
render() {
return html`
<link
rel="stylesheet"
href="chrome://global/content/elements/moz-card.css"
/>
<article
class="moz-card"
aria-labelledby=${ifDefined(this.heading ? "heading" : undefined)}
>
${this.cardTemplate()}
</article>
`;
}
}
customElements.define("moz-card", MozCard);
