76 lines
3.1 KiB
TypeScript
76 lines
3.1 KiB
TypeScript
/*
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Copyright 2020 The Matrix.org Foundation C.I.C.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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import { MatrixEvent } from "matrix-js-sdk/src/models/event";
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import { IPreview } from "./IPreview";
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import { TagID } from "../models";
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import { _t, sanitizeForTranslation } from "../../../languageHandler";
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import { getSenderName, isSelf, shouldPrefixMessagesIn } from "./utils";
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import ReplyChain from "../../../components/views/elements/ReplyChain";
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import { getHtmlText } from "../../../HtmlUtils";
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export class MessageEventPreview implements IPreview {
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public getTextFor(event: MatrixEvent, tagId?: TagID, isThread?: boolean): string {
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let eventContent = event.getContent();
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if (event.isRelation("m.replace")) {
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// It's an edit, generate the preview on the new text
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eventContent = event.getContent()['m.new_content'];
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}
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if (!eventContent || !eventContent['body']) return null; // invalid for our purposes
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let body = (eventContent['body'] || '').trim();
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const msgtype = eventContent['msgtype'];
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if (!body || !msgtype) return null; // invalid event, no preview
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const hasHtml = eventContent.format === "org.matrix.custom.html" && eventContent.formatted_body;
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if (hasHtml) {
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body = eventContent.formatted_body;
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}
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// XXX: Newer relations have a getRelation() function which is not compatible with replies.
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const mRelatesTo = event.getWireContent()['m.relates_to'];
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if (mRelatesTo && mRelatesTo['m.in_reply_to']) {
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// If this is a reply, get the real reply and use that
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if (hasHtml) {
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body = (ReplyChain.stripHTMLReply(body) || '').trim();
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} else {
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body = (ReplyChain.stripPlainReply(body) || '').trim();
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}
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if (!body) return null; // invalid event, no preview
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}
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if (hasHtml) {
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const sanitised = getHtmlText(body.replace(/<br\/?>/gi, "\n")); // replace line breaks before removing them
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// run it through DOMParser to fixup encoded html entities
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body = new DOMParser().parseFromString(sanitised, "text/html").documentElement.textContent;
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}
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body = sanitizeForTranslation(body);
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if (msgtype === 'm.emote') {
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return _t("* %(senderName)s %(emote)s", { senderName: getSenderName(event), emote: body });
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}
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if (isThread || isSelf(event) || !shouldPrefixMessagesIn(event.getRoomId(), tagId)) {
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return body;
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} else {
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return _t("%(senderName)s: %(message)s", { senderName: getSenderName(event), message: body });
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}
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}
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}
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