Labs: Add quick/cheap "do not disturb" flag

res/css/structures/_UserMenu.scss

@@ -117,6 +117,32 @@ limitations under the License.
         .mx_UserMenu_headerButtons {
             // No special styles: the rest of the layout happens to make it work.
         }
+
+        .mx_UserMenu_dnd {
+            width: 24px;
+            height: 24px;
+            margin-right: 8px;
+            position: relative;
+
+            &::before {
+                content: '';
+                position: absolute;
+                width: 24px;
+                height: 24px;
+                mask-position: center;
+                mask-size: contain;
+                mask-repeat: no-repeat;
+                background: $muted-fg-color;
+            }
+
+            &.mx_UserMenu_dnd_noisy::before {
+                mask-image: url('$(res)/img/element-icons/notifications.svg');
+            }
+
+            &.mx_UserMenu_dnd_muted::before {
+                mask-image: url('$(res)/img/element-icons/roomlist/notifications-off.svg');
+            }
+        }
     }
 
     &.mx_UserMenu_minimized {

src/Notifier.ts

@@ -383,6 +383,10 @@ export const Notifier = {
                 // don't bother notifying as user was recently active in this room
                 return;
             }
+            if (SettingsStore.getValue("doNotDisturb")) {
+                // Don't bother the user if they didn't ask to be bothered
+                return;
+            }
 
             if (this.isEnabled()) {
                 this._displayPopupNotification(ev, room);

src/components/structures/UserMenu.tsx

@@ -74,6 +74,7 @@ interface IState {
 export default class UserMenu extends React.Component<IProps, IState> {
     private dispatcherRef: string;
     private themeWatcherRef: string;
+    private dndWatcherRef: string;
     private buttonRef: React.RefObject<HTMLButtonElement> = createRef();
     private tagStoreRef: fbEmitter.EventSubscription;
 
@@ -89,6 +90,9 @@ export default class UserMenu extends React.Component<IProps, IState> {
         if (SettingsStore.getValue("feature_spaces")) {
             SpaceStore.instance.on(UPDATE_SELECTED_SPACE, this.onSelectedSpaceUpdate);
         }
+
+        // Force update is the easiest way to trigger the UI update (we don't store state for this)
+        this.dndWatcherRef = SettingsStore.watchSetting("doNotDisturb", null, () => this.forceUpdate());
     }
 
     private get hasHomePage(): boolean {
@@ -103,6 +107,7 @@ export default class UserMenu extends React.Component<IProps, IState> {
 
     public componentWillUnmount() {
         if (this.themeWatcherRef) SettingsStore.unwatchSetting(this.themeWatcherRef);
+        if (this.dndWatcherRef) SettingsStore.unwatchSetting(this.dndWatcherRef);
         if (this.dispatcherRef) defaultDispatcher.unregister(this.dispatcherRef);
         OwnProfileStore.instance.off(UPDATE_EVENT, this.onProfileUpdate);
         this.tagStoreRef.remove();
@@ -288,6 +293,12 @@ export default class UserMenu extends React.Component<IProps, IState> {
         this.setState({contextMenuPosition: null}); // also close the menu
     };
 
+    private onDndToggle = (ev) => {
+        ev.stopPropagation();
+        const current = SettingsStore.getValue("doNotDisturb");
+        SettingsStore.setValue("doNotDisturb", null, SettingLevel.DEVICE, !current);
+    };
+
     private renderContextMenu = (): React.ReactNode => {
         if (!this.state.contextMenuPosition) return null;
 
@@ -534,6 +545,7 @@ export default class UserMenu extends React.Component<IProps, IState> {
                 {/* masked image in CSS */}
             </span>
         );
+        let dnd;
         if (this.state.selectedSpace) {
             name = (
                 <div className="mx_UserMenu_doubleName">
@@ -560,6 +572,16 @@ export default class UserMenu extends React.Component<IProps, IState> {
                 </div>
             );
             isPrototype = true;
+        } else if (SettingsStore.getValue("feature_dnd")) {
+            const isDnd = SettingsStore.getValue("doNotDisturb");
+            dnd = <AccessibleButton
+                onClick={this.onDndToggle}
+                className={classNames({
+                    "mx_UserMenu_dnd": true,
+                    "mx_UserMenu_dnd_noisy": !isDnd,
+                    "mx_UserMenu_dnd_muted": isDnd,
+                })}
+            />;
         }
         if (this.props.isMinimized) {
             name = null;
@@ -595,6 +617,7 @@ export default class UserMenu extends React.Component<IProps, IState> {
                             />
                         </span>
                         {name}
+                        {dnd}
                         {buttons}
                     </div>
                 </ContextMenuButton>

src/i18n/strings/en_EN.json

@@ -786,6 +786,7 @@
     "%(senderName)s: %(stickerName)s": "%(senderName)s: %(stickerName)s",
     "Change notification settings": "Change notification settings",
     "Spaces prototype. Incompatible with Communities, Communities v2 and Custom Tags. Requires compatible homeserver for some features.": "Spaces prototype. Incompatible with Communities, Communities v2 and Custom Tags. Requires compatible homeserver for some features.",
+    "Show options to enable 'Do not disturb' mode": "Show options to enable 'Do not disturb' mode",
     "Send and receive voice messages (in development)": "Send and receive voice messages (in development)",
     "Render LaTeX maths in messages": "Render LaTeX maths in messages",
     "Communities v2 prototypes. Requires compatible homeserver. Highly experimental - use with caution.": "Communities v2 prototypes. Requires compatible homeserver. Highly experimental - use with caution.",

src/settings/Settings.ts

@@ -128,6 +128,12 @@ export const SETTINGS: {[setting: string]: ISetting} = {
         default: false,
         controller: new ReloadOnChangeController(),
     },
+    "feature_dnd": {
+        isFeature: true,
+        displayName: _td("Show options to enable 'Do not disturb' mode"),
+        supportedLevels: LEVELS_FEATURE,
+        default: false,
+    },
     "feature_voice_messages": {
         isFeature: true,
         displayName: _td("Send and receive voice messages (in development)"),
@@ -226,6 +232,10 @@ export const SETTINGS: {[setting: string]: ISetting} = {
         supportedLevels: LEVELS_DEVICE_ONLY_SETTINGS,
         default: false,
     },
+    "doNotDisturb": {
+        supportedLevels: [SettingLevel.DEVICE],
+        default: false,
+    },
     "mjolnirRooms": {
         supportedLevels: [SettingLevel.ACCOUNT],
         default: [],