Add a keyboard shortcut to toggle hidden event visibility when labs are enabled

src/KeyBindingsDefaults.ts

@@ -22,9 +22,11 @@ import {
     NavigationAction,
     RoomAction,
     RoomListAction,
+    LabsAction,
 } from "./KeyBindingsManager";
 import { isMac, Key } from "./Keyboard";
 import SettingsStore from "./settings/SettingsStore";
+import SdkConfig from "./SdkConfig";
 
 const messageComposerBindings = (): KeyBinding<MessageComposerAction>[] => {
     const bindings: KeyBinding<MessageComposerAction>[] = [
@@ -411,10 +413,28 @@ const navigationBindings = (): KeyBinding<NavigationAction>[] => {
     ];
 };
 
+const labsBindings = (): KeyBinding<LabsAction>[] => {
+    if (!SdkConfig.get()['showLabsSettings']) {
+        return [];
+    }
+
+    return [
+        {
+            action: LabsAction.ToggleHiddenEventVisibility,
+            keyCombo: {
+                key: Key.H,
+                ctrlOrCmd: true,
+                shiftKey: true,
+            },
+        },
+    ];
+};
+
 export const defaultBindingsProvider: IKeyBindingsProvider = {
     getMessageComposerBindings: messageComposerBindings,
     getAutocompleteBindings: autocompleteBindings,
     getRoomListBindings: roomListBindings,
     getRoomBindings: roomBindings,
     getNavigationBindings: navigationBindings,
+    getLabsBindings: labsBindings,
 };

src/KeyBindingsManager.ts

@@ -125,6 +125,12 @@ export enum NavigationAction {
     SelectNextUnreadRoom = 'SelectNextUnreadRoom',
 }
 
+/** Actions only available when labs are enabled */
+export enum LabsAction {
+    /** Toggle visibility of hidden events */
+    ToggleHiddenEventVisibility = 'ToggleHiddenEventVisibility',
+}
+
 /**
  * Represent a key combination.
  *
@@ -213,6 +219,7 @@ export interface IKeyBindingsProvider {
     getRoomListBindings: KeyBindingGetter<RoomListAction>;
     getRoomBindings: KeyBindingGetter<RoomAction>;
     getNavigationBindings: KeyBindingGetter<NavigationAction>;
+    getLabsBindings: KeyBindingGetter<LabsAction>;
 }
 
 export class KeyBindingsManager {
@@ -264,6 +271,10 @@ export class KeyBindingsManager {
     getNavigationAction(ev: KeyboardEvent | React.KeyboardEvent): NavigationAction | undefined {
         return this.getAction(this.bindingsProviders.map(it => it.getNavigationBindings), ev);
     }
+
+    getLabsAction(ev: KeyboardEvent | React.KeyboardEvent): LabsAction | undefined {
+        return this.getAction(this.bindingsProviders.map(it => it.getLabsBindings), ev);
+    }
 }
 
 const manager = new KeyBindingsManager();

src/accessibility/KeyboardShortcuts.ts

@@ -31,6 +31,7 @@ export enum CategoryName {
     ROOM_LIST = "Room List",
     ROOM = "Room",
     AUTOCOMPLETE = "Autocomplete",
+    LABS = "Labs",
 }
 
 // Meta-key representing the digits [0-9] often found at the top of standard keyboard layouts
@@ -125,6 +126,11 @@ export const CATEGORIES: Record<CategoryName, ICategory> = {
             "KeyBinding.nextOptionInAutoComplete",
             "KeyBinding.previousOptionInAutoComplete",
         ],
+    }, [CategoryName.LABS]: {
+        categoryLabel: _td("Labs"),
+        settingNames: [
+            "KeyBinding.toggleHiddenEventVisibility",
+        ],
     },
 };
 
@@ -402,6 +408,14 @@ export const KEYBOARD_SHORTCUTS: { [setting: string]: ISetting } = {
         },
         displayName: _td("Toggle space panel"),
     },
+    "KeyBinding.toggleHiddenEventVisibility": {
+        default: {
+            ctrlOrCmdKey: true,
+            shiftKey: true,
+            key: Key.H,
+        },
+        displayName: _td("Toggle hidden event visibility"),
+    },
 };
 
 export const registerShortcut = (shortcutName: string, categoryName: CategoryName, shortcut: ISetting): void => {

src/components/structures/LoggedInView.tsx

@@ -29,6 +29,7 @@ import { fixupColorFonts } from '../../utils/FontManager';
 import dis from '../../dispatcher/dispatcher';
 import { IMatrixClientCreds } from '../../MatrixClientPeg';
 import SettingsStore from "../../settings/SettingsStore";
+import { SettingLevel } from "../../settings/SettingLevel";
 import ResizeHandle from '../views/elements/ResizeHandle';
 import { CollapseDistributor, Resizer } from '../../resizer';
 import MatrixClientContext from "../../contexts/MatrixClientContext";
@@ -47,7 +48,7 @@ import { IOOBData, IThreepidInvite } from "../../stores/ThreepidInviteStore";
 import Modal from "../../Modal";
 import { ICollapseConfig } from "../../resizer/distributors/collapse";
 import HostSignupContainer from '../views/host_signup/HostSignupContainer';
-import { getKeyBindingsManager, NavigationAction, RoomAction } from '../../KeyBindingsManager';
+import { getKeyBindingsManager, NavigationAction, RoomAction, LabsAction } from '../../KeyBindingsManager';
 import { IOpts } from "../../createRoom";
 import SpacePanel from "../views/spaces/SpacePanel";
 import { replaceableComponent } from "../../utils/replaceableComponent";
@@ -531,6 +532,33 @@ class LoggedInView extends React.Component<IProps, IState> {
                 // if we do not have a handler for it, pass it to the platform which might
                 handled = PlatformPeg.get().onKeyDown(ev);
         }
+
+        // Handle labs actions here, as they apply within the same scope
+        if (!handled) {
+            const labsAction = getKeyBindingsManager().getLabsAction(ev);
+            switch (labsAction) {
+                case LabsAction.ToggleHiddenEventVisibility: {
+                    const hiddenEventVisibility = SettingsStore.getValueAt(
+                        SettingLevel.DEVICE,
+                        'showHiddenEventsInTimeline',
+                        undefined,
+                        false,
+                    );
+                    SettingsStore.setValue(
+                        'showHiddenEventsInTimeline',
+                        undefined,
+                        SettingLevel.DEVICE,
+                        !hiddenEventVisibility,
+                    );
+                    handled = true;
+                    break;
+                }
+                default:
+                    // if we do not have a handler for it, pass it to the platform which might
+                    handled = PlatformPeg.get().onKeyDown(ev);
+            }
+        }
+
         if (handled) {
             ev.stopPropagation();
             ev.preventDefault();

src/components/views/settings/tabs/user/KeyboardUserSettingsTab.tsx

@@ -25,6 +25,7 @@ import {
     CATEGORIES,
     CategoryName,
 } from "../../../../../accessibility/KeyboardShortcuts";
+import SdkConfig from "../../../../../SdkConfig";
 import { isMac, Key } from "../../../../../Keyboard";
 import { _t } from "../../../../../languageHandler";
 
@@ -76,6 +77,10 @@ interface IKeyboardShortcutRowProps {
     name: string;
 }
 
+// Filter out the labs section if labs aren't enabled.
+const visibleCategories = Object.entries(CATEGORIES).filter(([categoryName]) =>
+    categoryName !== CategoryName.LABS || SdkConfig.get()['showLabsSettings']);
+
 const KeyboardShortcutRow: React.FC<IKeyboardShortcutRowProps> = ({ name }) => {
     return <div className="mx_KeyboardShortcut_shortcutRow">
         { KEYBOARD_SHORTCUTS[name].displayName }
@@ -100,7 +105,7 @@ const KeyboardShortcutSection: React.FC<IKeyboardShortcutSectionProps> = ({ cate
 const KeyboardUserSettingsTab: React.FC = () => {
     return <div className="mx_SettingsTab mx_KeyboardUserSettingsTab">
         <div className="mx_SettingsTab_heading">{ _t("Keyboard") }</div>
-        { Object.entries(CATEGORIES).map(([categoryName, category]: [CategoryName, ICategory]) => {
+        { visibleCategories.map(([categoryName, category]: [CategoryName, ICategory]) => {
             return <KeyboardShortcutSection key={categoryName} categoryName={categoryName} category={category} />;
         }) }
     </div>;

src/i18n/strings/en_EN.json

@@ -3414,5 +3414,6 @@
     "Cancel autocomplete": "Cancel autocomplete",
     "Next autocomplete suggestion": "Next autocomplete suggestion",
     "Previous autocomplete suggestion": "Previous autocomplete suggestion",
-    "Toggle space panel": "Toggle space panel"
+    "Toggle space panel": "Toggle space panel",
+    "Toggle hidden event visibility": "Toggle hidden event visibility"
 }