54 lines
1.5 KiB
JavaScript
54 lines
1.5 KiB
JavaScript
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import { _converse, converse, api } from '../../../src/headless/core.js'
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/**
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* This plugin computes the available width of converse-root, and adds classes
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* and events so we can adapt the display of some elements to the current
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* width/height.
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* We can't rely on things such as @media, because in certain cases (for
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* example when the chat is beside the video), the chat position and size
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* depends on many other elements (video in large mode, ...).
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*/
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converse.plugins.add('livechat-converse-size', {
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dependencies: [],
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initialize () {
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_converse.api.listen.on('connected', start)
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_converse.api.listen.on('reconnected', start)
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_converse.api.listen.on('disconnected', stop)
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}
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})
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const rootResizeObserver = new ResizeObserver(entries => {
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for (const entry of entries) {
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handle(entry.target)
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}
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})
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function start () {
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const root = document.querySelector('converse-root')
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if (!root) { return }
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if (root.hasAttribute('livechat-converse-root-width')) {
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stop()
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}
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rootResizeObserver.observe(root)
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handle(root)
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}
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function stop () {
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rootResizeObserver.disconnect()
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document.querySelector('converse-root')?.removeAttribute('livechat-converse-root-width')
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}
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function handle (el) {
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const rect = el.getBoundingClientRect()
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const width = rect.width > 576 ? 'large' : (rect.width > 250 ? 'medium' : 'small')
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const previous = el.getAttribute('livechat-converse-root-width')
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if (width === previous) { return }
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el.setAttribute('livechat-converse-root-width', width)
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api.trigger('livechatSizeChanged', {
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width: width
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})
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}
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