Merge pull request #2993 from matrix-org/jryans/devtools-event-source-in-timeline

Add debug feature to show hidden events in timeline

src/components/structures/MessagePanel.js

@@ -24,6 +24,7 @@ import {wantsDateSeparator} from '../../DateUtils';
 import sdk from '../../index';
 
 import MatrixClientPeg from '../../MatrixClientPeg';
+import SettingsStore from '../../settings/SettingsStore';
 
 const CONTINUATION_MAX_INTERVAL = 5 * 60 * 1000; // 5 minutes
 const continuedTypes = ['m.sticker', 'm.room.message'];
@@ -248,6 +249,10 @@ module.exports = React.createClass({
             return false; // ignored = no show (only happens if the ignore happens after an event was received)
         }
 
+        if (SettingsStore.getValue("showHiddenEventsInTimeline")) {
+            return true;
+        }
+
         const EventTile = sdk.getComponent('rooms.EventTile');
         if (!EventTile.haveTileForEvent(mxEv)) {
             return false; // no tile = no show

src/components/views/messages/ViewSourceEvent.js

@@ -0,0 +1,67 @@
+/*
+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 classNames from 'classnames';
+
+export default class ViewSourceEvent extends React.PureComponent {
+    static propTypes = {
+        /* the MatrixEvent to show */
+        mxEvent: PropTypes.object.isRequired,
+    };
+
+    constructor(props) {
+        super(props);
+
+        this.state = {
+            expanded: false,
+        };
+    }
+
+    onToggle = (ev) => {
+        ev.preventDefault();
+        const { expanded } = this.state;
+        this.setState({
+            expanded: !expanded,
+        });
+    }
+
+    render() {
+        const { mxEvent } = this.props;
+        const { expanded } = this.state;
+
+        let content;
+        if (expanded) {
+            content = <pre>{JSON.stringify(mxEvent, null, 4)}</pre>;
+        } else {
+            content = <code>{`{ "type": ${mxEvent.getType()} }`}</code>;
+        }
+
+        const classes = classNames("mx_ViewSourceEvent mx_EventTile_content", {
+            mx_ViewSourceEvent_expanded: expanded,
+        });
+
+        return <span className={classes}>
+            {content}
+            <a
+                className="mx_ViewSourceEvent_toggle"
+                href="#"
+                onClick={this.onToggle}
+            />
+        </span>;
+    }
+}

src/components/views/rooms/EventTile.js

@@ -520,7 +520,10 @@ module.exports = withMatrixClient(React.createClass({
             eventType !== 'm.room.message' && eventType !== 'm.sticker' && eventType != 'm.room.create'
         );
 
-        const tileHandler = getHandlerTile(this.props.mxEvent);
+        let tileHandler = getHandlerTile(this.props.mxEvent);
+        if (!tileHandler && SettingsStore.getValue("showHiddenEventsInTimeline")) {
+            tileHandler = "messages.ViewSourceEvent";
+        }
         // This shouldn't happen: the caller should check we support this type
         // before trying to instantiate us
         if (!tileHandler) {

src/components/views/settings/tabs/user/LabsUserSettingsTab.js

@@ -52,6 +52,7 @@ export default class LabsUserSettingsTab extends React.Component {
                 <div className="mx_SettingsTab_section">
                     {flags}
                     <SettingsFlag name={"enableWidgetScreenshots"} level={SettingLevel.ACCOUNT} />
+                    <SettingsFlag name={"showHiddenEventsInTimeline"} level={SettingLevel.DEVICE} />
                 </div>
             </div>
         );