WIP for showing pills in edit history

src/components/views/elements/EditHistoryMessage.js

@@ -0,0 +1,51 @@
+/*
+Copyright 2019 New Vector Ltd
+Copyright 2019 The Matrix.org Foundation C.I.C.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+import React from 'react';
+import PropTypes from 'prop-types';
+import * as HtmlUtils from '../../../HtmlUtils';
+import {formatTime} from '../../../DateUtils';
+import {MatrixEvent} from 'matrix-js-sdk';
+import {pillifyLinks} from '../../../utils/pillify';
+
+export default class EditHistoryMessage extends React.Component {
+    static propTypes = {
+        // the message event being edited
+        mxEvent: PropTypes.instanceOf(MatrixEvent).isRequired,
+    };
+
+    constructor(props, context) {
+        super(props, context);
+    }
+
+    componentDidMount() {
+        pillifyLinks(this.refs.content.children, this.props.mxEvent);
+    }
+
+    componentDidUpdate() {
+        pillifyLinks(this.refs.content.children, this.props.mxEvent);
+    }
+
+    render() {
+        const event = this.props.mxEvent;
+        const timestamp = formatTime(new Date(event.getTs()), true);
+        const content = event.event.content["m.new_content"] || event.event.content;
+        return <li className="edit" key={event.getId()}>
+            <strong>{timestamp}</strong>
+            <p ref="content">{HtmlUtils.bodyToHtml(content)}</p>
+        </li>;
+    }
+}

src/utils/pillify.js

@@ -95,7 +95,7 @@ export function pillifyLinks(nodes, mxEvent) {
         }
 
         if (node.childNodes && node.childNodes.length && !pillified) {
-            pillifyLinks(node.childNodes);
+            pillifyLinks(node.childNodes, mxEvent);
         }
 
         node = node.nextSibling;