Add formatting buttons to the WysiwygComposer

package.json

@@ -57,7 +57,7 @@
   "dependencies": {
     "@babel/runtime": "^7.12.5",
     "@matrix-org/analytics-events": "^0.2.0",
-    "@matrix-org/matrix-wysiwyg": "^0.0.2",
+    "@matrix-org/matrix-wysiwyg": "^0.2.0",
     "@matrix-org/react-sdk-module-api": "^0.0.3",
     "@sentry/browser": "^6.11.0",
     "@sentry/tracing": "^6.11.0",

res/css/_components.pcss

@@ -297,6 +297,7 @@
 @import "./views/rooms/_TopUnreadMessagesBar.pcss";
 @import "./views/rooms/_VoiceRecordComposerTile.pcss";
 @import "./views/rooms/_WhoIsTypingTile.pcss";
+@import "./views/rooms/wysiwyg_composer/_FormattingButtons.pcss";
 @import "./views/rooms/wysiwyg_composer/_WysiwygComposer.pcss";
 @import "./views/settings/_AvatarSetting.pcss";
 @import "./views/settings/_CrossSigningPanel.pcss";

res/css/views/rooms/_MessageComposer.pcss

@@ -233,6 +233,17 @@ limitations under the License.
     }
 }
 
+/*
+    The wysisyg composer increase the size of the MessageComposer. We temporary move the buttons
+    Soon the dom structure of the MessageComposer will change with the next evolution of the wysiwyg composer
+    and this workaround will disappear
+*/
+.mx_MessageComposer_wysiwyg {
+    .mx_MessageComposer_e2eIcon.mx_E2EIcon,.mx_MessageComposer_button, .mx_MessageComposer_sendMessage {
+        margin-top: 22px;
+    }
+}
+
 .mx_MessageComposer_upload::before {
     mask-image: url('$(res)/img/element-icons/room/composer/attach.svg');
 }

res/css/views/rooms/wysiwyg_composer/_FormattingButtons.pcss

@@ -0,0 +1,118 @@
+/*
+Copyright 2022 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.
+*/
+
+.mx_FormattingButtons {
+    display: flex;
+    justify-content: start;
+
+    .mx_FormattingButtons_Button {
+        --size: 28px;
+        position: relative;
+        cursor: pointer;
+        height: var(--size);
+        line-height: var(--size);
+        width: auto;
+        padding-left: 22px;
+        margin-right: 8px;
+        background-color: transparent;
+        border: none;
+
+        &:first-child {
+            margin-left: 12px;
+        }
+
+        &:last-child {
+            margin-right: auto;
+        }
+
+        &::before {
+            content: '';
+            position: absolute;
+            top: 6px;
+            left: 6px;
+            height: 16px;
+            width: 16px;
+            background-color: $icon-button-color;
+            mask-repeat: no-repeat;
+            mask-size: contain;
+            mask-position: center;
+        }
+
+        &::after {
+            content: '';
+            position: absolute;
+            left: 0;
+            top: 0;
+            z-index: 0;
+            width: var(--size);
+            height: var(--size);
+            border-radius: 5px;
+        }
+
+        &:hover {
+            &::after {
+                background: rgba($secondary-content, 0.1);
+            }
+
+            &::before {
+                background-color: $secondary-content;
+            }
+        }
+    }
+
+    .mx_FormattingButtons_active {
+        &::after {
+            background: rgba($accent, 0.1);
+        }
+
+        &::before {
+            background-color: $accent;
+        }
+    }
+
+    .mx_FormattingButtons_Button_bold::before {
+        mask-image: url('$(res)/img/element-icons/room/composer/bold.svg');
+    }
+
+    .mx_FormattingButtons_Button_italic::before {
+        mask-image: url('$(res)/img/element-icons/room/composer/italic.svg');
+    }
+
+    .mx_FormattingButtons_Button_underline::before {
+        mask-image: url('$(res)/img/element-icons/room/composer/underline.svg');
+    }
+
+    .mx_FormattingButtons_Button_strikethrough::before {
+        mask-image: url('$(res)/img/element-icons/room/composer/strikethrough.svg');
+    }
+}
+
+.mx_FormattingButtons_Tooltip {
+    padding: 0 2px 0 2px;
+
+    .mx_FormattingButtons_Tooltip_KeyboardShortcut {
+        color: $tertiary-content;
+
+        kbd {
+            margin-top: 2px;
+            text-align: center;
+            display: inline-block;
+            text-transform: capitalize;
+            font-size: 12px;
+            font-family: Inter, sans-serif;
+        }
+    }
+}

src/components/views/rooms/MessageComposer.tsx

@@ -389,6 +389,7 @@ export default class MessageComposer extends React.Component<IProps, IState> {
     }
 
     public render() {
+        const isWysiwygComposerEnabled = SettingsStore.getValue("feature_wysiwyg_composer");
         const controls = [
             this.props.e2eStatus ?
                 <E2EIcon key="e2eIcon" status={this.props.e2eStatus} className="mx_MessageComposer_e2eIcon" /> :
@@ -403,8 +404,6 @@ export default class MessageComposer extends React.Component<IProps, IState> {
 
         const canSendMessages = this.context.canSendMessages && !this.context.tombstone;
         if (canSendMessages) {
-            const isWysiwygComposerEnabled = SettingsStore.getValue("feature_wysiwyg_composer");
-
             if (isWysiwygComposerEnabled) {
                 controls.push(
                     <WysiwygComposer key="controls_input"
@@ -503,6 +502,7 @@ export default class MessageComposer extends React.Component<IProps, IState> {
             "mx_MessageComposer": true,
             "mx_MessageComposer--compact": this.props.compact,
             "mx_MessageComposer_e2eStatus": this.props.e2eStatus != undefined,
+            "mx_MessageComposer_wysiwyg": isWysiwygComposerEnabled,
         });
 
         return (

src/components/views/rooms/wysiwyg_composer/Editor.tsx

@@ -0,0 +1,41 @@
+/*
+Copyright 2022 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, { forwardRef, memo } from 'react';
+
+interface EditorProps {
+    disabled: boolean;
+}
+
+export const Editor = memo(
+    forwardRef<HTMLDivElement, EditorProps>(
+        function Editor({ disabled }: EditorProps, ref,
+        ) {
+            return <div className="mx_WysiwygComposer_container">
+                <div className="mx_WysiwygComposer_content"
+                    ref={ref!}
+                    contentEditable={!disabled}
+                    role="textbox"
+                    aria-multiline="true"
+                    aria-autocomplete="list"
+                    aria-haspopup="listbox"
+                    dir="auto"
+                    aria-disabled={disabled}
+                />
+            </div>;
+        },
+    ),
+);

src/components/views/rooms/wysiwyg_composer/FormattingButtons.tsx

@@ -0,0 +1,69 @@
+/*
+Copyright 2022 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 { useWysiwyg } from "@matrix-org/matrix-wysiwyg";
+import classNames from "classnames";
+
+import AccessibleTooltipButton from "../../elements/AccessibleTooltipButton";
+import { Alignment } from "../../elements/Tooltip";
+import { KeyboardShortcut } from "../../settings/KeyboardShortcut";
+import { KeyCombo } from "../../../../KeyBindingsManager";
+import { _td } from "../../../../languageHandler";
+
+interface TooltipProps {
+    label: string;
+    keyCombo?: KeyCombo;
+}
+
+function Tooltip({ label, keyCombo }: TooltipProps) {
+    return <div className="mx_FormattingButtons_Tooltip">
+        { label }
+        { keyCombo && <KeyboardShortcut value={keyCombo} className="mx_FormattingButtons_Tooltip_KeyboardShortcut" /> }
+    </div>;
+}
+
+interface ButtonProps extends TooltipProps {
+    className: string;
+    isActive: boolean;
+    onClick: () => void;
+}
+
+function Button({ label, keyCombo, onClick, isActive, className }: ButtonProps) {
+    return <AccessibleTooltipButton
+        element="button"
+        onClick={onClick}
+        title={label}
+        className={
+            classNames('mx_FormattingButtons_Button', className, { 'mx_FormattingButtons_active': isActive })}
+        tooltip={keyCombo && <Tooltip label={label} keyCombo={keyCombo} />}
+        alignment={Alignment.Top}
+    />;
+}
+
+interface FormattingButtonsProps {
+    wysiwyg: ReturnType<typeof useWysiwyg>['wysiwyg'];
+    formattingStates: ReturnType<typeof useWysiwyg>['formattingStates'];
+}
+
+export function FormattingButtons({ wysiwyg, formattingStates }: FormattingButtonsProps) {
+    return <div className="mx_FormattingButtons">
+        <Button isActive={formattingStates.bold === 'reversed'} label={_td("Bold")} keyCombo={{ ctrlOrCmdKey: true, key: 'b' }} onClick={() => wysiwyg.bold()} className="mx_FormattingButtons_Button_bold" />
+        <Button isActive={formattingStates.italic === 'reversed'} label={_td('Italic')} keyCombo={{ ctrlOrCmdKey: true, key: 'i' }} onClick={() => wysiwyg.italic()} className="mx_FormattingButtons_Button_italic" />
+        <Button isActive={formattingStates.underline === 'reversed'} label={_td('Underline')} keyCombo={{ ctrlOrCmdKey: true, key: 'u' }} onClick={() => wysiwyg.underline()} className="mx_FormattingButtons_Button_underline" />
+        <Button isActive={formattingStates.strikeThrough === 'reversed'} label={_td('Strikethrough')} onClick={() => wysiwyg.strikeThrough()} className="mx_FormattingButtons_Button_strikethrough" />
+    </div>;
+}

src/components/views/rooms/wysiwyg_composer/WysiwygComposer.tsx

@@ -14,14 +14,16 @@ See the License for the specific language governing permissions and
 limitations under the License.
 */
 
-import React, { useCallback, useState } from 'react';
+import React, { useCallback, useEffect } from 'react';
 import { useWysiwyg } from "@matrix-org/matrix-wysiwyg";
 import { IEventRelation, MatrixEvent } from 'matrix-js-sdk/src/models/event';
 
 import { useRoomContext } from '../../../../contexts/RoomContext';
 import { sendMessage } from './message';
 import { RoomPermalinkCreator } from '../../../../utils/permalinks/Permalinks';
 import { useMatrixClientContext } from '../../../../contexts/MatrixClientContext';
+import { FormattingButtons } from './FormattingButtons';
+import { Editor } from './Editor';
 
 interface WysiwygProps {
     disabled?: boolean;
@@ -39,11 +41,13 @@ export function WysiwygComposer(
     const roomContext = useRoomContext();
     const mxClient = useMatrixClientContext();
 
-    const [content, setContent] = useState<string>();
-    const { ref, isWysiwygReady, wysiwyg } = useWysiwyg({ onChange: (_content) => {
-        setContent(_content);
-        onChange(_content);
-    } });
+    const { ref, isWysiwygReady, content, formattingStates, wysiwyg } = useWysiwyg();
+
+    useEffect(() => {
+        if (!disabled && content !== null) {
+            onChange(content);
+        }
+    }, [onChange, content, disabled]);
 
     const memoizedSendMessage = useCallback(() => {
         sendMessage(content, { mxClient, roomContext, ...props });
@@ -53,18 +57,8 @@ export function WysiwygComposer(
 
     return (
         <div className="mx_WysiwygComposer">
-            <div className="mx_WysiwygComposer_container">
-                <div className="mx_WysiwygComposer_content"
-                    ref={ref}
-                    contentEditable={!disabled && isWysiwygReady}
-                    role="textbox"
-                    aria-multiline="true"
-                    aria-autocomplete="list"
-                    aria-haspopup="listbox"
-                    dir="auto"
-                    aria-disabled={disabled || !isWysiwygReady}
-                />
-            </div>
+            <FormattingButtons wysiwyg={wysiwyg} formattingStates={formattingStates} />
+            <Editor ref={ref} disabled={!isWysiwygReady || disabled} />
             { children?.(memoizedSendMessage) }
         </div>
     );

src/components/views/settings/KeyboardShortcut.tsx

@@ -38,9 +38,10 @@ export const KeyboardKey: React.FC<IKeyboardKeyProps> = ({ name, last }) => {
 
 interface IKeyboardShortcutProps {
     value: KeyCombo;
+    className?: string;
 }
 
-export const KeyboardShortcut: React.FC<IKeyboardShortcutProps> = ({ value }) => {
+export const KeyboardShortcut: React.FC<IKeyboardShortcutProps> = ({ value, className = 'mx_KeyboardShortcut' }) => {
     if (!value) return null;
 
     const modifiersElement = [];
@@ -58,7 +59,7 @@ export const KeyboardShortcut: React.FC<IKeyboardShortcutProps> = ({ value }) =>
         modifiersElement.push(<KeyboardKey key="shiftKey" name={Key.SHIFT} />);
     }
 
-    return <div className="mx_KeyboardShortcut">
+    return <div className={className}>
         { modifiersElement }
         <KeyboardKey name={value.key} last />
     </div>;