peertube-plugin-livechat/conversejs/custom/plugins/size/index.js

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2024-05-23 09:42:14 +00:00
// SPDX-FileCopyrightText: 2024 John Livingston <https://www.john-livingston.fr/>
//
// SPDX-License-Identifier: AGPL-3.0-only
import { _converse, converse, api } from '../../../src/headless/core.js'
/**
* This plugin computes the available width of converse-root, and adds classes
* and events so we can adapt the display of some elements to the current
* width/height.
* We can't rely on things such as @media, because in certain cases (for
* example when the chat is beside the video), the chat position and size
* depends on many other elements (video in large mode, ...).
*/
converse.plugins.add('livechat-converse-size', {
dependencies: [],
initialize () {
_converse.api.listen.on('connected', start)
_converse.api.listen.on('reconnected', start)
_converse.api.listen.on('disconnected', stop)
}
})
const rootResizeObserver = new ResizeObserver(entries => {
for (const entry of entries) {
handle(entry.target)
}
})
function start () {
const root = document.querySelector('converse-root')
if (!root) { return }
if (root.hasAttribute('livechat-converse-root-width')) {
stop()
}
root.style.display = 'block' // this is needed, otherwise it won't have any width.
rootResizeObserver.observe(root)
handle(root)
}
function stop () {
rootResizeObserver.disconnect()
const root = document.querySelector('converse-root')
if (root) {
root.removeAttribute('livechat-converse-root-width')
root.removeAttribute('livechat-converse-root-height')
}
}
function handle (el) {
const rect = el.getBoundingClientRect()
const height = rect.height > 576 ? 'high' : (rect.height > 250 ? 'medium' : 'small')
const width = rect.width > 576 ? 'large' : (rect.width > 250 ? 'medium' : 'small')
const previousHeight = el.getAttribute('livechat-converse-root-height')
const previousWidth = el.getAttribute('livechat-converse-root-width')
if (width === previousWidth && height === previousHeight) { return }
el.setAttribute('livechat-converse-root-width', width)
el.setAttribute('livechat-converse-root-height', height)
api.trigger('livechatSizeChanged', {
height: height,
width: width
})
}