373 lines
16 KiB
JavaScript
373 lines
16 KiB
JavaScript
import tplAudio from 'templates/audio.js';
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import tplGif from 'templates/gif.js';
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import tplImage from 'templates/image.js';
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import tplVideo from 'templates/video.js';
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import { api } from '@converse/headless/core';
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import { containsDirectives, getDirectiveAndLength, getDirectiveTemplate, isQuoteDirective } from './styling.js';
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import { getEmojiMarkup } from './chat/utils.js';
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import { getHyperlinkTemplate } from 'utils/html.js';
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import { getMediaURLs } from '@converse/headless/shared/chat/utils.js';
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import { getMediaURLsMetadata } from '@converse/headless/shared/parsers.js';
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import {
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convertASCII2Emoji,
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getCodePointReferences,
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getShortnameReferences
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} from '@converse/headless/plugins/emoji/utils.js';
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import {
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filterQueryParamsFromURL,
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isAudioURL,
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isGIFURL,
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isImageURL,
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isVideoURL,
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shouldRenderMediaFromURL,
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} from '@converse/headless/utils/url.js';
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import { html } from 'lit';
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const isString = s => typeof s === 'string';
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// We don't render more than two line-breaks, replace extra line-breaks with
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// the zero-width whitespace character
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const collapseLineBreaks = text => text.replace(/\n\n+/g, m => `\n${'\u200B'.repeat(m.length - 2)}\n`);
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const tplMentionWithNick = o => html`<span class="mention mention--self badge badge-info" data-uri="${o.uri}">${o.mention}</span>`;
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const tplMention = o => html`<span class="mention" data-uri="${o.uri}">${o.mention}</span>`;
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/**
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* @class RichText
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* A String subclass that is used to render rich text (i.e. text that contains
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* hyperlinks, images, mentions, styling etc.).
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*
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* The "rich" parts of the text is represented by lit TemplateResult
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* objects which are added via the {@link RichText.addTemplateResult}
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* method and saved as metadata.
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*
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* By default Converse adds TemplateResults to support emojis, hyperlinks,
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* images, map URIs and mentions.
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*
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* 3rd party plugins can listen for the `beforeMessageBodyTransformed`
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* and/or `afterMessageBodyTransformed` events and then call
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* `addTemplateResult` on the RichText instance in order to add their own
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* rich features.
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*/
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export class RichText extends String {
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/**
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* Create a new {@link RichText} instance.
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* @param { String } text - The text to be annotated
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* @param { number } offset - The offset of this particular piece of text
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* from the start of the original message text. This is necessary because
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* RichText instances can be nested when templates call directives
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* which create new RichText instances (as happens with XEP-393 styling directives).
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* @param { Object } options
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* @param { String } options.nick - The current user's nickname (only relevant if the message is in a XEP-0045 MUC)
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* @param { Boolean } options.render_styling - Whether XEP-0393 message styling should be applied to the message
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* @param { Boolean } [options.embed_audio] - Whether audio URLs should be rendered as <audio> elements.
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* If set to `true`, then audio files will always be rendered with an
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* audio player. If set to `false`, they won't, and if not defined, then the `embed_audio` setting
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* is used to determine whether they should be rendered as playable audio or as hyperlinks.
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* @param { Boolean } [options.embed_videos] - Whether video URLs should be rendered as <video> elements.
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* If set to `true`, then videos will always be rendered with a video
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* player. If set to `false`, they won't, and if not defined, then the `embed_videos` setting
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* is used to determine whether they should be rendered as videos or as hyperlinks.
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* @param { Array } [options.mentions] - An array of mention references
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* @param { Array } [options.media_urls] - An array of {@link MediaURLMetadata} objects,
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* used to render media such as images, videos and audio. It might not be
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* possible to have the media metadata available, so if this value is
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* `undefined` then the passed-in `text` will be parsed for URLs. If you
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* don't want this parsing to happen, pass in an empty array for this
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* option.
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* @param { Boolean } [options.show_images] - Whether image URLs should be rendered as <img> elements.
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* @param { Boolean } options.show_me_message - Whether /me messages should be rendered differently
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* @param { Function } options.onImgClick - Callback for when an inline rendered image has been clicked
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* @param { Function } options.onImgLoad - Callback for when an inline rendered image has been loaded
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*/
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constructor (text, offset = 0, options = {}) {
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super(text);
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this.embed_audio = options?.embed_audio;
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this.embed_videos = options?.embed_videos;
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this.mentions = options?.mentions || [];
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this.media_urls = options?.media_urls;
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this.nick = options?.nick;
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this.offset = offset;
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this.onImgClick = options?.onImgClick;
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this.onImgLoad = options?.onImgLoad;
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this.options = options;
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this.payload = [];
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this.references = [];
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this.render_styling = options?.render_styling;
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this.show_images = options?.show_images;
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this.hide_media_urls = options?.hide_media_urls;
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}
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shouldRenderMedia (url_text, type) {
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let override;
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if (type === 'image') {
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override = this.show_images;
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} else if (type === 'audio') {
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override = this.embed_audio;
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} else if (type === 'video') {
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override = this.embed_videos;
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}
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if (typeof override === 'boolean') {
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return override;
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}
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return shouldRenderMediaFromURL(url_text, type);
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}
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/**
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* Look for `http` URIs and return templates that render them as URL links
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* @param { String } text
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* @param { number } local_offset - The index of the passed in text relative to
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* the start of this RichText instance (which is not necessarily the same as the
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* offset from the start of the original message stanza's body text).
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*/
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addHyperlinks (text, local_offset) {
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const full_offset = local_offset + this.offset;
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const urls_meta = this.media_urls || getMediaURLsMetadata(text, local_offset).media_urls || [];
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const media_urls = getMediaURLs(urls_meta, text, full_offset);
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media_urls.filter(o => !o.is_encrypted).forEach(url_obj => {
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const url_text = url_obj.url;
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const filtered_url = filterQueryParamsFromURL(url_text);
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let template;
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if (isGIFURL(url_text) && this.shouldRenderMedia(url_text, 'image')) {
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template = tplGif(filtered_url, this.hide_media_urls);
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} else if (isImageURL(url_text) && this.shouldRenderMedia(url_text, 'image')) {
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template = tplImage({
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'src': filtered_url,
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// XXX: bit of an abuse of `hide_media_urls`, might want a dedicated option here
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'href': this.hide_media_urls ? null : filtered_url,
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'onClick': this.onImgClick,
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'onLoad': this.onImgLoad
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});
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} else if (isVideoURL(url_text) && this.shouldRenderMedia(url_text, 'video')) {
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template = tplVideo(filtered_url, this.hide_media_urls);
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} else if (isAudioURL(url_text) && this.shouldRenderMedia(url_text, 'audio')) {
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template = tplAudio(filtered_url, this.hide_media_urls);
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} else {
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template = getHyperlinkTemplate(filtered_url);
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}
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this.addTemplateResult(url_obj.start + local_offset, url_obj.end + local_offset, template);
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});
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}
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/**
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* Look for `geo` URIs and return templates that render them as URL links
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* @param { String } text
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* @param { number } offset - The index of the passed in text relative to
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* the start of the message body text.
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*/
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addMapURLs (text, offset) {
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const regex = /geo:([\-0-9.]+),([\-0-9.]+)(?:,([\-0-9.]+))?(?:\?(.*))?/g;
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const matches = text.matchAll(regex);
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for (const m of matches) {
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this.addTemplateResult(
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m.index + offset,
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m.index + m[0].length + offset,
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getHyperlinkTemplate(m[0].replace(regex, api.settings.get('geouri_replacement')))
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);
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}
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}
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/**
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* Look for emojis (shortnames or unicode) and add templates for rendering them.
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* @param { String } text
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* @param { number } offset - The index of the passed in text relative to
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* the start of the message body text.
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*/
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addEmojis (text, offset) {
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const references = [...getShortnameReferences(text.toString()), ...getCodePointReferences(text.toString())];
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references.forEach(e => {
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this.addTemplateResult(e.begin + offset, e.end + offset, getEmojiMarkup(e, { 'add_title_wrapper': true }));
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});
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}
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/**
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* Look for mentions included as XEP-0372 references and add templates for
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* rendering them.
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* @param { String } text
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* @param { number } local_offset - The index of the passed in text relative to
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* the start of this RichText instance (which is not necessarily the same as the
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* offset from the start of the original message stanza's body text).
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*/
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addMentions (text, local_offset) {
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const full_offset = local_offset + this.offset;
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this.mentions?.forEach(ref => {
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const begin = Number(ref.begin) - full_offset;
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if (begin < 0 || begin >= full_offset + text.length) {
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return;
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}
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const end = Number(ref.end) - full_offset;
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const mention = text.slice(begin, end);
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if (mention === this.nick) {
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this.addTemplateResult(begin + local_offset, end + local_offset, tplMentionWithNick({...ref, mention }));
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} else {
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this.addTemplateResult(begin + local_offset, end + local_offset, tplMention({...ref, mention }));
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}
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});
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}
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/**
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* Look for XEP-0393 styling directives and add templates for rendering them.
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*/
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addStyling () {
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if (!containsDirectives(this)) {
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return;
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}
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const references = [];
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const mention_ranges = this.mentions.map(m =>
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Array.from({ 'length': Number(m.end) }, (_, i) => Number(m.begin) + i)
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);
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let i = 0;
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while (i < this.length) {
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if (mention_ranges.filter(r => r.includes(i)).length) { // eslint-disable-line no-loop-func
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// Don't treat potential directives if they fall within a
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// declared XEP-0372 reference
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i++;
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continue;
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}
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const { d, length } = getDirectiveAndLength(this, i);
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if (d && length) {
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const is_quote = isQuoteDirective(d);
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const end = i + length;
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const slice_end = is_quote ? end : end - d.length;
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let slice_begin = d === '```' ? i + d.length + 1 : i + d.length;
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if (is_quote && this[slice_begin] === ' ') {
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// Trim leading space inside codeblock
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slice_begin += 1;
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}
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const offset = slice_begin;
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const text = this.slice(slice_begin, slice_end);
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references.push({
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'begin': i,
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'template': getDirectiveTemplate(d, text, offset, this.options),
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end
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});
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i = end;
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}
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i++;
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}
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references.forEach(ref => this.addTemplateResult(ref.begin, ref.end, ref.template));
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}
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trimMeMessage () {
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if (this.offset === 0) {
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// Subtract `/me ` from 3rd person messages
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if (this.isMeCommand()) {
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this.payload[0] = this.payload[0].substring(4);
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}
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}
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}
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/**
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* Look for plaintext (i.e. non-templated) sections of this RichText
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* instance and add references via the passed in function.
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* @param { Function } func
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*/
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addAnnotations (func) {
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const payload = this.marshall();
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let idx = 0; // The text index of the element in the payload
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for (const text of payload) {
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if (!text) {
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continue;
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} else if (isString(text)) {
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func.call(this, text, idx);
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idx += text.length;
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} else {
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idx = text.end;
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}
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}
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}
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/**
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* Parse the text and add template references for rendering the "rich" parts.
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*
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* @param { RichText } text
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* @param { Boolean } show_images - Should URLs of images be rendered as `<img>` tags?
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* @param { Function } onImgLoad
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* @param { Function } onImgClick
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**/
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async addTemplates () {
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/**
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* Synchronous event which provides a hook for transforming a chat message's body text
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* before the default transformations have been applied.
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* @event _converse#beforeMessageBodyTransformed
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* @param { RichText } text - A {@link RichText } instance. You
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* can call {@link RichText#addTemplateResult } on it in order to
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* add TemplateResult objects meant to render rich parts of the message.
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* @example _converse.api.listen.on('beforeMessageBodyTransformed', (view, text) => { ... });
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*/
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await api.trigger('beforeMessageBodyTransformed', this, { 'Synchronous': true });
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this.render_styling && this.addStyling();
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this.addAnnotations(this.addMentions);
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this.addAnnotations(this.addHyperlinks);
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this.addAnnotations(this.addMapURLs);
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await api.emojis.initialize();
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this.addAnnotations(this.addEmojis);
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/**
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* Synchronous event which provides a hook for transforming a chat message's body text
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* after the default transformations have been applied.
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* @event _converse#afterMessageBodyTransformed
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* @param { RichText } text - A {@link RichText } instance. You
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* can call {@link RichText#addTemplateResult} on it in order to
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* add TemplateResult objects meant to render rich parts of the message.
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* @example _converse.api.listen.on('afterMessageBodyTransformed', (view, text) => { ... });
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*/
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await api.trigger('afterMessageBodyTransformed', this, { 'Synchronous': true });
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this.payload = this.marshall();
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this.options.show_me_message && this.trimMeMessage();
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this.payload = this.payload.map(item => (isString(item) ? item : item.template));
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}
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/**
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* The "rich" markup parts of a chat message are represented by lit
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* TemplateResult objects.
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*
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* This method can be used to add new template results to this message's
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* text.
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*
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* @method RichText.addTemplateResult
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* @param { Number } begin - The starting index of the plain message text
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* which is being replaced with markup.
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* @param { Number } end - The ending index of the plain message text
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* which is being replaced with markup.
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* @param { Object } template - The lit TemplateResult instance
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*/
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addTemplateResult (begin, end, template) {
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this.references.push({ begin, end, template });
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}
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isMeCommand () {
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const text = this.toString();
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if (!text) {
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return false;
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}
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return text.startsWith('/me ');
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}
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/**
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* Take the annotations and return an array of text and TemplateResult
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* instances to be rendered to the DOM.
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* @method RichText#marshall
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*/
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marshall () {
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let list = [this.toString()];
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this.references
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.sort((a, b) => b.begin - a.begin)
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.forEach(ref => {
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const text = list.shift();
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list = [text.slice(0, ref.begin), ref, text.slice(ref.end), ...list];
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});
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return list.reduce(
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(acc, i) => (isString(i) ? [...acc, convertASCII2Emoji(collapseLineBreaks(i))] : [...acc, i]),
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[]
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);
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}
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}
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