143 lines
4.5 KiB
TypeScript
143 lines
4.5 KiB
TypeScript
import { MediaChromeButton } from './media-chrome-button.js';
|
|
import { globalThis, document } from './utils/server-safe-globals.js';
|
|
import { MediaUIEvents, MediaUIAttributes } from './constants.js';
|
|
import { verbs } from './labels/labels.js';
|
|
import { getBooleanAttr, setBooleanAttr } from './utils/element-utils.js';
|
|
|
|
const { MEDIA_TIME_IS_LIVE, MEDIA_PAUSED } = MediaUIAttributes;
|
|
const { MEDIA_SEEK_TO_LIVE_REQUEST, MEDIA_PLAY_REQUEST } = MediaUIEvents;
|
|
|
|
const indicatorSVG =
|
|
'<svg viewBox="0 0 6 12"><circle cx="3" cy="6" r="2"></circle></svg>';
|
|
|
|
const slotTemplate = document.createElement('template');
|
|
slotTemplate.innerHTML = /*html*/ `
|
|
<style>
|
|
:host { --media-tooltip-display: none; }
|
|
|
|
slot[name=indicator] > *,
|
|
:host ::slotted([slot=indicator]) {
|
|
${/* Override styles for icon-only buttons */ ''}
|
|
min-width: auto;
|
|
fill: var(--media-live-button-icon-color, rgb(140, 140, 140));
|
|
color: var(--media-live-button-icon-color, rgb(140, 140, 140));
|
|
}
|
|
|
|
:host([${MEDIA_TIME_IS_LIVE}]:not([${MEDIA_PAUSED}])) slot[name=indicator] > *,
|
|
:host([${MEDIA_TIME_IS_LIVE}]:not([${MEDIA_PAUSED}])) ::slotted([slot=indicator]) {
|
|
fill: var(--media-live-button-indicator-color, rgb(255, 0, 0));
|
|
color: var(--media-live-button-indicator-color, rgb(255, 0, 0));
|
|
}
|
|
|
|
:host([${MEDIA_TIME_IS_LIVE}]:not([${MEDIA_PAUSED}])) {
|
|
cursor: not-allowed;
|
|
}
|
|
|
|
</style>
|
|
|
|
<slot name="indicator">${indicatorSVG}</slot>
|
|
${
|
|
/*
|
|
A new line between spacer and text creates inconsistent spacing
|
|
between slotted items and default slots.
|
|
*/ ''
|
|
}
|
|
<slot name="spacer"> </slot><slot name="text">LIVE</slot>
|
|
`;
|
|
|
|
const updateAriaAttributes = (el: MediaLiveButton): void => {
|
|
const isPausedOrNotLive = el.mediaPaused || !el.mediaTimeIsLive;
|
|
const label = isPausedOrNotLive ? verbs.SEEK_LIVE() : verbs.PLAYING_LIVE();
|
|
el.setAttribute('aria-label', label);
|
|
|
|
isPausedOrNotLive
|
|
? el.removeAttribute('aria-disabled')
|
|
: el.setAttribute('aria-disabled', 'true');
|
|
};
|
|
|
|
/**
|
|
* @slot indicator - The default is an SVG of a circle that changes to red when the video or audio is live. Can be replaced with your own SVG or font icon.
|
|
* @slot spacer - A simple text space ( ) between the indicator and the text.
|
|
* @slot text - The text content of the button, with a default of “LIVE”.
|
|
*
|
|
* @attr {boolean} mediapaused - (read-only) Present if the media is paused.
|
|
* @attr {boolean} mediatimeislive - (read-only) Present if the media playback is live.
|
|
*
|
|
* @cssproperty [--media-live-button-display = inline-flex] - `display` property of button.
|
|
* @cssproperty --media-live-button-icon-color - `fill` and `color` of not live button icon.
|
|
* @cssproperty --media-live-button-indicator-color - `fill` and `color` of live button icon.
|
|
*/
|
|
class MediaLiveButton extends MediaChromeButton {
|
|
static get observedAttributes(): string[] {
|
|
return [...super.observedAttributes, MEDIA_PAUSED, MEDIA_TIME_IS_LIVE];
|
|
}
|
|
|
|
constructor(options: object = {}) {
|
|
super({ slotTemplate, ...options });
|
|
}
|
|
|
|
connectedCallback(): void {
|
|
updateAriaAttributes(this);
|
|
super.connectedCallback();
|
|
}
|
|
|
|
attributeChangedCallback(
|
|
attrName: string,
|
|
oldValue: string | null,
|
|
newValue: string | null
|
|
): void {
|
|
super.attributeChangedCallback(attrName, oldValue, newValue);
|
|
updateAriaAttributes(this);
|
|
}
|
|
|
|
/**
|
|
* @type {boolean} Is the media paused
|
|
*/
|
|
get mediaPaused(): boolean {
|
|
return getBooleanAttr(this, MediaUIAttributes.MEDIA_PAUSED);
|
|
}
|
|
|
|
set mediaPaused(value: boolean) {
|
|
setBooleanAttr(this, MediaUIAttributes.MEDIA_PAUSED, value);
|
|
}
|
|
|
|
/**
|
|
* @type {boolean} Is the media playback currently live
|
|
*/
|
|
get mediaTimeIsLive(): boolean {
|
|
return getBooleanAttr(this, MediaUIAttributes.MEDIA_TIME_IS_LIVE);
|
|
}
|
|
|
|
set mediaTimeIsLive(value: boolean) {
|
|
setBooleanAttr(this, MediaUIAttributes.MEDIA_TIME_IS_LIVE, value);
|
|
}
|
|
|
|
handleClick(): void {
|
|
// If we're live and not paused, don't allow seek to live
|
|
if (!this.mediaPaused && this.mediaTimeIsLive) return;
|
|
|
|
this.dispatchEvent(
|
|
new globalThis.CustomEvent(MEDIA_SEEK_TO_LIVE_REQUEST, {
|
|
composed: true,
|
|
bubbles: true,
|
|
})
|
|
);
|
|
|
|
// If we're paused, also automatically play
|
|
if (this.hasAttribute(MEDIA_PAUSED)) {
|
|
this.dispatchEvent(
|
|
new globalThis.CustomEvent(MEDIA_PLAY_REQUEST, {
|
|
composed: true,
|
|
bubbles: true,
|
|
})
|
|
);
|
|
}
|
|
}
|
|
}
|
|
|
|
if (!globalThis.customElements.get('media-live-button')) {
|
|
globalThis.customElements.define('media-live-button', MediaLiveButton);
|
|
}
|
|
|
|
export default MediaLiveButton;
|