Add NotifProvider to offer @room as a completion

src/autocomplete/Autocompleter.js

@@ -23,6 +23,7 @@ import DuckDuckGoProvider from './DuckDuckGoProvider';
 import RoomProvider from './RoomProvider';
 import UserProvider from './UserProvider';
 import EmojiProvider from './EmojiProvider';
+import NotifProvider from './NotifProvider';
 import Promise from 'bluebird';
 
 export type SelectionRange = {
@@ -44,6 +45,7 @@ const PROVIDERS = [
     UserProvider,
     RoomProvider,
     EmojiProvider,
+    NotifProvider,
     CommandProvider,
     DuckDuckGoProvider,
 ];

src/autocomplete/NotifProvider.js

@@ -0,0 +1,63 @@
+/*
+Copyright 2017 New Vector Ltd
+
+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 AutocompleteProvider from './AutocompleteProvider';
+import { _t } from '../languageHandler';
+import MatrixClientPeg from '../MatrixClientPeg';
+import {PillCompletion} from './Components';
+import sdk from '../index';
+
+const AT_ROOM_REGEX = /@\S*/g;
+
+export default class NotifProvider extends AutocompleteProvider {
+    constructor(room) {
+        super(AT_ROOM_REGEX);
+        this.room = room;
+    }
+
+    async getCompletions(query: string, selection: {start: number, end: number}, force = false) {
+        const RoomAvatar = sdk.getComponent('views.avatars.RoomAvatar');
+
+        const client = MatrixClientPeg.get();
+
+        if (!this.room.currentState.mayTriggerNotifOfType('room', client.credentials.userId)) return [];
+
+        let completions = [];
+        const {command, range} = this.getCurrentCommand(query, selection, force);
+        if (command && command[0] && '@room'.startsWith(command[0]) && command[0].length > 1) {
+            return [{
+                completion: '@room',
+                suffix: ' ',
+                component: (
+                    <PillCompletion initialComponent={<RoomAvatar width={24} height={24} room={this.room} />} title="@room" description={_t("Notify the whole room")} />
+                ),
+                range,
+            }];
+        }
+        return [];
+    }
+
+    getName() {
+        return '❗️ ' + _t('Room Notification');
+    }
+
+    renderCompletions(completions: [React.Component]): ?React.Component {
+        return <div className="mx_Autocomplete_Completion_container_pill mx_Autocomplete_Completion_container_truncate">
+            { completions }
+        </div>;
+    }
+}

src/i18n/strings/en_EN.json

@@ -891,6 +891,8 @@
     "Commands": "Commands",
     "Results from DuckDuckGo": "Results from DuckDuckGo",
     "Emoji": "Emoji",
+    "Notify the whole room": "Notify the whole room",
+    "Room Notification": "Room Notification",
     "Users": "Users",
     "unknown device": "unknown device",
     "NOT verified": "NOT verified",