Add keyboard shortcut for emoji reactions

src/components/views/rooms/BasicMessageComposer.tsx

@@ -47,6 +47,7 @@ import AutocompleteWrapperModel from "../../../editor/autocomplete";
 import DocumentPosition from "../../../editor/position";
 import {ICompletion} from "../../../autocomplete/Autocompleter";
 
+// matches emoticons which follow the start of a line or whitespace
 const REGEX_EMOTICON_WHITESPACE = new RegExp('(?:^|\\s)(' + EMOTICON_REGEX.source + ')\\s$');
 
 const IS_MAC = navigator.platform.indexOf("Mac") !== -1;
@@ -524,7 +525,7 @@ export default class BasicMessageEditor extends React.Component<IProps, IState>
             const position = model.positionForOffset(caret.offset, caret.atNodeEnd);
             const range = model.startRange(position);
             range.expandBackwardsWhile((index, offset, part) => {
-                return part.text[offset] !== " " && (
+                return part.text[offset] !== " " && part.text[offset] !== "+" && (
                     part.type === "plain" ||
                     part.type === "pill-candidate" ||
                     part.type === "command"

src/components/views/rooms/SendMessageComposer.js

@@ -44,6 +44,8 @@ import RateLimitedFunc from '../../../ratelimitedfunc';
 import {Action} from "../../../dispatcher/actions";
 import SettingsStore from "../../../settings/SettingsStore";
 import CountlyAnalytics from "../../../CountlyAnalytics";
+import {MatrixClientPeg} from "../../../MatrixClientPeg";
+import EMOJI_REGEX from 'emojibase-regex';
 
 function addReplyToMessageContent(content, repliedToEvent, permalinkCreator) {
     const replyContent = ReplyThread.makeReplyMixIn(repliedToEvent);
@@ -89,6 +91,24 @@ export function createMessageContent(model, permalinkCreator, replyToEvent) {
     return content;
 }
 
+// exported for tests
+export function isQuickReaction(model) {
+    const parts = model.parts;
+    if (parts.length == 0) return false;
+    const text = textSerialize(model);
+    // shortcut takes the form "+:emoji:" or "+ :emoji:""
+    // can be in 1 or 2 parts
+    if (parts.length <= 2) {
+        const hasShortcut = text.startsWith("+") || text.startsWith("+ ");
+        const emojiMatch = text.match(EMOJI_REGEX);
+        if (hasShortcut && emojiMatch && emojiMatch.length == 1) {
+            return emojiMatch[0] === text.substring(1) ||
+                emojiMatch[0] === text.substring(2);
+        }
+    }
+    return false;
+}
+
 export default class SendMessageComposer extends React.Component {
     static propTypes = {
         room: PropTypes.object.isRequired,
@@ -221,6 +241,41 @@ export default class SendMessageComposer extends React.Component {
         return false;
     }
 
+    _sendQuickReaction() {
+        const timeline = this.props.room.getLiveTimeline();
+        const events = timeline.getEvents();
+        const reaction = this.model.parts[1].text;
+        for (let i = events.length - 1; i >= 0; i--) {
+            if (events[i].getType() === "m.room.message") {
+                let shouldReact = true;
+                const lastMessage = events[i];
+                const userId = MatrixClientPeg.get().getUserId();
+                const messageReactions = this.props.room.getUnfilteredTimelineSet()
+                    .getRelationsForEvent(lastMessage.getId(), "m.annotation", "m.reaction");
+
+                // if we have already sent this reaction, don't redact but don't re-send
+                if (messageReactions) {
+                    const myReactionEvents = messageReactions.getAnnotationsBySender()[userId] || [];
+                    const myReactionKeys = [...myReactionEvents]
+                        .filter(event => !event.isRedacted())
+                        .map(event => event.getRelation().key);
+                        shouldReact = !myReactionKeys.includes(reaction);
+                }
+                if (shouldReact) {
+                    MatrixClientPeg.get().sendEvent(lastMessage.getRoomId(), "m.reaction", {
+                        "m.relates_to": {
+                            "rel_type": "m.annotation",
+                            "event_id": lastMessage.getId(),
+                            "key": reaction,
+                        },
+                    });
+                    dis.dispatch({action: "message_sent"});
+                }
+                break;
+            }
+        }
+    }
+
     _getSlashCommand() {
         const commandText = this.model.parts.reduce((text, part) => {
             // use mxid to textify user pills in a command
@@ -308,6 +363,11 @@ export default class SendMessageComposer extends React.Component {
             }
         }
 
+        if (isQuickReaction(this.model)) {
+            shouldSend = false;
+            this._sendQuickReaction();
+        }
+
         const replyToEvent = this.props.replyToEvent;
         if (shouldSend) {
             const startTime = CountlyAnalytics.getTimestamp();

src/editor/parts.ts

@@ -190,7 +190,9 @@ abstract class PlainBasePart extends BasePart {
                 return true;
             }
             // only split if the previous character is a space
-            return this._text[offset - 1] !== " ";
+            // or if it is a + and this is a :
+            return this._text[offset - 1] !== " " &&
+                (this._text[offset - 1] !== "+" || chr !== ":");
         }
         return true;
     }

test/components/views/rooms/SendMessageComposer-test.js

@@ -18,8 +18,10 @@ import Adapter from "enzyme-adapter-react-16";
 import { configure, mount } from "enzyme";
 import React from "react";
 import {act} from "react-dom/test-utils";
-
-import SendMessageComposer, {createMessageContent} from "../../../../src/components/views/rooms/SendMessageComposer";
+import SendMessageComposer, {
+    createMessageContent,
+    isQuickReaction,
+} from "../../../../src/components/views/rooms/SendMessageComposer";
 import MatrixClientContext from "../../../../src/contexts/MatrixClientContext";
 import EditorModel from "../../../../src/editor/model";
 import {createPartCreator, createRenderer} from "../../../editor/mock";
@@ -227,6 +229,42 @@ describe('<SendMessageComposer/>', () => {
             });
         });
     });
+
+    describe("isQuickReaction", () => {
+        it("correctly detects quick reaction", () => {
+            const model = new EditorModel([], createPartCreator(), createRenderer());
+            model.update("+😊", "insertText", {offset: 3, atNodeEnd: true});
+
+            const isReaction = isQuickReaction(model);
+
+            expect(isReaction).toBeTruthy();
+        });
+
+        it("correctly detects quick reaction with space", () => {
+            const model = new EditorModel([], createPartCreator(), createRenderer());
+            model.update("+ 😊", "insertText", {offset: 4, atNodeEnd: true});
+
+            const isReaction = isQuickReaction(model);
+
+            expect(isReaction).toBeTruthy();
+        });
+
+        it("correctly rejects quick reaction with extra text", () => {
+            const model = new EditorModel([], createPartCreator(), createRenderer());
+            const model2 = new EditorModel([], createPartCreator(), createRenderer());
+            const model3 = new EditorModel([], createPartCreator(), createRenderer());
+            const model4 = new EditorModel([], createPartCreator(), createRenderer());
+            model.update("+😊hello", "insertText", {offset: 8, atNodeEnd: true});
+            model2.update(" +😊", "insertText", {offset: 4, atNodeEnd: true});
+            model3.update("+ 😊😊", "insertText", {offset: 6, atNodeEnd: true});
+            model4.update("+smiley", "insertText", {offset: 7, atNodeEnd: true});
+
+            expect(isQuickReaction(model)).toBeFalsy();
+            expect(isQuickReaction(model2)).toBeFalsy();
+            expect(isQuickReaction(model3)).toBeFalsy();
+            expect(isQuickReaction(model4)).toBeFalsy();
+        });
+    });
 });