Main menu and overlay patching API

frontend/src/components/DeckyGlobalComponentsState.tsx

@@ -14,13 +14,13 @@ export class DeckyGlobalComponentsState {
     return { components: this._components };
   }
 
-  addComponent(path: string, component: FC) {
+  addComponent(name: string, component: FC) {
-    this._components.set(path, component);
+    this._components.set(name, component);
     this.notifyUpdate();
   }
 
-  removeComponent(path: string) {
+  removeComponent(name: string) {
-    this._components.delete(path);
+    this._components.delete(name);
     this.notifyUpdate();
   }
 
@@ -30,8 +30,8 @@ export class DeckyGlobalComponentsState {
 }
 
 interface DeckyGlobalComponentsContext extends PublicDeckyGlobalComponentsState {
-  addComponent(path: string, component: FC): void;
+  addComponent(name: string, component: FC): void;
-  removeComponent(path: string): void;
+  removeComponent(name: string): void;
 }
 
 const DeckyGlobalComponentsContext = createContext<DeckyGlobalComponentsContext>(null as any);

frontend/src/components/DeckyMenuState.tsx

@@ -0,0 +1,147 @@
+import { CustomMainMenuItem, ItemPatch, OverlayPatch } from 'decky-frontend-lib';
+import { FC, ReactNode, createContext, useContext, useEffect, useState } from 'react';
+
+interface PublicDeckyMenuState {
+  items: Set<CustomMainMenuItem>;
+  itemPatches: Map<string, Set<ItemPatch>>;
+  overlayPatches: Set<OverlayPatch>;
+  overlayComponents: Set<ReactNode>;
+}
+
+export class DeckyMenuState {
+  private _items = new Set<CustomMainMenuItem>();
+  private _itemPatches = new Map<string, Set<ItemPatch>>();
+  private _overlayPatches = new Set<OverlayPatch>();
+  private _overlayComponents = new Set<ReactNode>();
+
+  public eventBus = new EventTarget();
+
+  publicState(): PublicDeckyMenuState {
+    return {
+      items: this._items,
+      itemPatches: this._itemPatches,
+      overlayPatches: this._overlayPatches,
+      overlayComponents: this._overlayComponents,
+    };
+  }
+
+  addItem(item: CustomMainMenuItem) {
+    this._items.add(item);
+    this.notifyUpdate();
+    return item;
+  }
+
+  addPatch(path: string, patch: ItemPatch) {
+    let patchList = this._itemPatches.get(path);
+    if (!patchList) {
+      patchList = new Set();
+      this._itemPatches.set(path, patchList);
+    }
+    patchList.add(patch);
+    this.notifyUpdate();
+    return patch;
+  }
+
+  addOverlayPatch(patch: OverlayPatch) {
+    this._overlayPatches.add(patch);
+    this.notifyUpdate();
+    return patch;
+  }
+
+  addOverlayComponent(component: ReactNode) {
+    this._overlayComponents.add(component);
+    this.notifyUpdate();
+    return component;
+  }
+
+  removePatch(path: string, patch: ItemPatch) {
+    const patchList = this._itemPatches.get(path);
+    patchList?.delete(patch);
+    if (patchList?.size == 0) {
+      this._itemPatches.delete(path);
+    }
+    this.notifyUpdate();
+  }
+
+  removeItem(item: CustomMainMenuItem) {
+    this._items.delete(item);
+    this.notifyUpdate();
+    return item;
+  }
+
+  removeOverlayPatch(patch: OverlayPatch) {
+    this._overlayPatches.delete(patch);
+    this.notifyUpdate();
+  }
+
+  removeOverlayComponent(component: ReactNode) {
+    this._overlayComponents.delete(component);
+    this.notifyUpdate();
+  }
+
+  private notifyUpdate() {
+    this.eventBus.dispatchEvent(new Event('update'));
+  }
+}
+
+interface DeckyMenuStateContext extends PublicDeckyMenuState {
+  addItem: DeckyMenuState['addItem'];
+  addPatch: DeckyMenuState['addPatch'];
+  addOverlayPatch: DeckyMenuState['addOverlayPatch'];
+  addOverlayComponent: DeckyMenuState['addOverlayComponent'];
+  removePatch: DeckyMenuState['removePatch'];
+  removeOverlayPatch: DeckyMenuState['removeOverlayPatch'];
+  removeOverlayComponent: DeckyMenuState['removeOverlayComponent'];
+  removeItem: DeckyMenuState['removeItem'];
+}
+
+const DeckyMenuStateContext = createContext<DeckyMenuStateContext>(null as any);
+
+export const useDeckyMenuState = () => useContext(DeckyMenuStateContext);
+
+interface Props {
+  deckyMenuState: DeckyMenuState;
+}
+
+export const DeckyMenuStateContextProvider: FC<Props> = ({ children, deckyMenuState }) => {
+  const [publicDeckyMenuState, setPublicDeckyMenuState] = useState<PublicDeckyMenuState>({
+    ...deckyMenuState.publicState(),
+  });
+
+  useEffect(() => {
+    function onUpdate() {
+      setPublicDeckyMenuState({ ...deckyMenuState.publicState() });
+    }
+
+    deckyMenuState.eventBus.addEventListener('update', onUpdate);
+
+    return () => deckyMenuState.eventBus.removeEventListener('update', onUpdate);
+  }, []);
+
+  const addItem = deckyMenuState.addItem.bind(deckyMenuState);
+  const addPatch = deckyMenuState.addPatch.bind(deckyMenuState);
+  const addOverlayPatch = deckyMenuState.addOverlayPatch.bind(deckyMenuState);
+  const addOverlayComponent = deckyMenuState.addOverlayComponent.bind(deckyMenuState);
+  const removePatch = deckyMenuState.removePatch.bind(deckyMenuState);
+  const removeOverlayPatch = deckyMenuState.removeOverlayPatch.bind(deckyMenuState);
+  const removeOverlayComponent = deckyMenuState.removeOverlayComponent.bind(deckyMenuState);
+  const removeItem = deckyMenuState.removeItem.bind(deckyMenuState);
+
+  return (
+    <DeckyMenuStateContext.Provider
+      value={{
+        ...publicDeckyMenuState,
+        addItem,
+        addPatch,
+        addOverlayPatch,
+        addOverlayComponent,
+        removePatch,
+        removeOverlayPatch,
+        removeOverlayComponent,
+        removeItem,
+      }}
+    >
+      {children}
+    </DeckyMenuStateContext.Provider>
+  );
+};

frontend/src/menu-hook.tsx

@@ -0,0 +1,212 @@
+import {
+  CustomMainMenuItem,
+  ItemPatch,
+  MainMenuItem,
+  OverlayPatch,
+  afterPatch,
+  findInReactTree,
+  sleep,
+} from 'decky-frontend-lib';
+import { FC } from 'react';
+import { ReactNode, cloneElement, createElement } from 'react';
+
+import { DeckyMenuState, DeckyMenuStateContextProvider, useDeckyMenuState } from './components/DeckyMenuState';
+import Logger from './logger';
+
+declare global {
+  interface Window {
+    __MENU_HOOK_INSTANCE: any;
+  }
+}
+
+class MenuHook extends Logger {
+  private menuRenderer?: any;
+  private originalRenderer?: any;
+  private menuState: DeckyMenuState = new DeckyMenuState();
+
+  constructor() {
+    super('MenuHook');
+
+    this.log('Initialized');
+    window.__MENU_HOOK_INSTANCE?.deinit?.();
+    window.__MENU_HOOK_INSTANCE = this;
+  }
+
+  init() {
+    const tree = (document.getElementById('root') as any)._reactRootContainer._internalRoot.current;
+    let outerMenuRoot: any;
+    const findMenuRoot = (currentNode: any, iters: number): any => {
+      if (iters >= 60) {
+        // currently 54
+        return null;
+      }
+      if (currentNode?.memoizedProps?.navID == 'MainNavMenuContainer') {
+        this.log(`Menu root was found in ${iters} recursion cycles`);
+        return currentNode;
+      }
+      if (currentNode.child) {
+        let node = findMenuRoot(currentNode.child, iters + 1);
+        if (node !== null) return node;
+      }
+      if (currentNode.sibling) {
+        let node = findMenuRoot(currentNode.sibling, iters + 1);
+        if (node !== null) return node;
+      }
+      return null;
+    };
+
+    (async () => {
+      outerMenuRoot = findMenuRoot(tree, 0);
+      while (!outerMenuRoot) {
+        this.error(
+          'Failed to find Menu root node, reattempting in 5 seconds. A developer may need to increase the recursion limit.',
+        );
+        await sleep(5000);
+        outerMenuRoot = findMenuRoot(tree, 0);
+      }
+      this.log('found outermenuroot', outerMenuRoot);
+      const menuRenderer = outerMenuRoot.return;
+      this.menuRenderer = menuRenderer;
+      this.originalRenderer = menuRenderer.type;
+      let toReplace = new Map<string, ReactNode>();
+
+      let patchedInnerMenu: any;
+      let overlayComponentManager: any;
+
+      const DeckyOverlayComponentManager = () => {
+        const { overlayComponents } = useDeckyMenuState();
+
+        return <>{overlayComponents.values()}</>;
+      };
+
+      const DeckyInnerMenuWrapper = (props: { innerProps: any }) => {
+        const { overlayPatches } = useDeckyMenuState();
+
+        const rendererRet = this.originalRenderer(props.innerProps);
+
+        // Find the first array of children, this contains [mainmenu, overlay]
+        const childArray = findInReactTree(rendererRet, (x) => x?.[0]?.type);
+
+        // Insert the overlay components manager
+        if (!overlayComponentManager) {
+          overlayComponentManager = <DeckyOverlayComponentManager />;
+        }
+
+        childArray.push(overlayComponentManager);
+
+        // This must be cached in patchedInnerMenu to prevent re-renders
+        if (patchedInnerMenu) {
+          childArray[0].type = patchedInnerMenu;
+        } else {
+          afterPatch(childArray[0], 'type', (menuArgs, ret) => {
+            const { itemPatches, items } = useDeckyMenuState();
+
+            const itemList = ret.props.children;
+
+            // Add custom menu items
+            if (items.size > 0) {
+              const button = findInReactTree(ret.props.children, (x) =>
+                x?.type?.toString()?.includes('exactRouteMatch:'),
+              );
+
+              const MenuItemComponent: FC<MainMenuItem> = button.type;
+
+              items.forEach((item) => {
+                let realIndex = 0; // there are some non-item things in the array
+                let count = 0;
+                itemList.forEach((i: any) => {
+                  if (count == item.index) return;
+                  if (i?.type == MenuItemComponent) count++;
+                  realIndex++;
+                });
+                itemList.splice(realIndex, 0, createElement(MenuItemComponent, item));
+              });
+            }
+
+            // Apply and revert patches
+            itemList.forEach((item: { props: MainMenuItem }, index: number) => {
+              if (!item?.props?.route) return;
+              const replaced = toReplace.get(item?.props?.route as string);
+              if (replaced) {
+                itemList[index] = replaced;
+                toReplace.delete(item?.props.route as string);
+              }
+              if (item?.props?.route && itemPatches.has(item.props.route as string)) {
+                toReplace.set(item?.props?.route as string, itemList[index]);
+                itemPatches.get(item.props.route as string)?.forEach((patch) => {
+                  const oType = itemList[index].type;
+                  itemList[index] = patch({
+                    ...cloneElement(itemList[index]),
+                    type: (props) => createElement(oType, props),
+                  });
+                });
+              }
+            });
+
+            return ret;
+          });
+          patchedInnerMenu = childArray[0].type;
+        }
+
+        // Apply patches to the overlay
+        if (childArray[1]) {
+          overlayPatches.forEach((patch) => (childArray[1] = patch(childArray[1])));
+        }
+
+        return rendererRet;
+      };
+
+      const DeckyOuterMenuWrapper = (props: any) => {
+        return (
+          <DeckyMenuStateContextProvider deckyMenuState={this.menuState}>
+            <DeckyInnerMenuWrapper innerProps={props} />
+          </DeckyMenuStateContextProvider>
+        );
+      };
+      menuRenderer.type = DeckyOuterMenuWrapper;
+      if (menuRenderer.alternate) {
+        menuRenderer.alternate.type = menuRenderer.type;
+      }
+      this.log('Finished initial injection');
+    })();
+  }
+
+  deinit() {
+    this.menuRenderer.type = this.originalRenderer;
+    this.menuRenderer.alternate.type = this.menuRenderer.type;
+  }
+
+  addItem(item: CustomMainMenuItem) {
+    return this.menuState.addItem(item);
+  }
+
+  addPatch(path: string, patch: ItemPatch) {
+    return this.menuState.addPatch(path, patch);
+  }
+
+  addOverlayPatch(patch: OverlayPatch) {
+    return this.menuState.addOverlayPatch(patch);
+  }
+
+  addOverlayComponent(component: ReactNode) {
+    return this.menuState.addOverlayComponent(component);
+  }
+
+  removePatch(path: string, patch: ItemPatch) {
+    return this.menuState.removePatch(path, patch);
+  }
+
+  removeItem(item: CustomMainMenuItem) {
+    return this.menuState.removeItem(item);
+  }
+
+  removeOverlayPatch(patch: OverlayPatch) {
+    return this.menuState.removeOverlayPatch(patch);
+  }
+
+  removeOverlayComponent(component: ReactNode) {
+    return this.menuState.removeOverlayComponent(component);
+  }
+}
+
+export default MenuHook;

frontend/src/plugin-loader.tsx

@@ -1,13 +1,4 @@
-import {
+import { ConfirmModal, ModalRoot, QuickAccessTab, Router, showModal, sleep, staticClasses } from 'decky-frontend-lib';
-  ConfirmModal,
-  ModalRoot,
-  Patch,
-  QuickAccessTab,
-  Router,
-  showModal,
-  sleep,
-  staticClasses,
-} from 'decky-frontend-lib';
 import { FC, lazy } from 'react';
 import { FaCog, FaExclamationCircle, FaPlug } from 'react-icons/fa';
 
@@ -19,6 +10,7 @@ import NotificationBadge from './components/NotificationBadge';
 import PluginView from './components/PluginView';
 import WithSuspense from './components/WithSuspense';
 import Logger from './logger';
+import MenuHook from './menu-hook';
 import { Plugin } from './plugin';
 import RouterHook from './router-hook';
 import { deinitSteamFixes, initSteamFixes } from './steamfixes';
@@ -37,6 +29,7 @@ const FilePicker = lazy(() => import('./components/modals/filepicker'));
 class PluginLoader extends Logger {
   private plugins: Plugin[] = [];
   private tabsHook: TabsHook | OldTabsHook = document.title == 'SP' ? new OldTabsHook() : new TabsHook();
+  private menuHook: MenuHook = new MenuHook();
   // private windowHook: WindowHook = new WindowHook();
   private routerHook: RouterHook = new RouterHook();
   public toaster: Toaster = new Toaster();
@@ -46,11 +39,10 @@ class PluginLoader extends Logger {
   // stores a list of plugin names which requested to be reloaded
   private pluginReloadQueue: { name: string; version?: string }[] = [];
 
-  private focusWorkaroundPatch?: Patch;
-
   constructor() {
     super(PluginLoader.name);
     this.tabsHook.init();
+    this.menuHook.init();
     this.log('Initialized');
 
     const TabBadge = () => {
@@ -185,7 +177,6 @@ class PluginLoader extends Logger {
     this.routerHook.removeRoute('/decky/settings');
     deinitSteamFixes();
     deinitFilepickerPatches();
-    this.focusWorkaroundPatch?.unpatch();
   }
 
   public unloadPlugin(name: string) {
@@ -322,6 +313,7 @@ class PluginLoader extends Logger {
 
   createPluginAPI(pluginName: string) {
     return {
+      menuHook: this.menuHook,
       routerHook: this.routerHook,
       toaster: this.toaster,
       callServerMethod: this.callServerMethod,

frontend/src/router-hook.tsx

@@ -120,6 +120,8 @@ class RouterHook extends Logger {
       return <>{renderedComponents}</>;
     };
 
+    let globalComponents: any;
+
     this.wrapperPatch = afterPatch(this.gamepadWrapper, 'render', (_: any, ret: any) => {
       if (ret?.props?.children?.props?.children?.length == 5 || ret?.props?.children?.props?.children?.length == 4) {
         const idx = ret?.props?.children?.props?.children?.length == 4 ? 1 : 2;
@@ -143,11 +145,17 @@ class RouterHook extends Logger {
             this.memoizedRouter = memo(this.router.type);
             this.memoizedRouter.isDeckyRouter = true;
           }
-          ret.props.children.props.children.push(
+
-            <DeckyGlobalComponentsStateContextProvider deckyGlobalComponentsState={this.globalComponentsState}>
+          if (!globalComponents) {
-              <DeckyGlobalComponentsWrapper />
+            globalComponents = (
-            </DeckyGlobalComponentsStateContextProvider>,
+              <DeckyGlobalComponentsStateContextProvider deckyGlobalComponentsState={this.globalComponentsState}>
-          );
+                <DeckyGlobalComponentsWrapper />
+              </DeckyGlobalComponentsStateContextProvider>
+            );
+          }
+
+          ret.props.children.props.children.push(globalComponents);
+
           ret.props.children.props.children[idx].props.children[0].type = this.memoizedRouter;
         }
       }