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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', (_, 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;
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