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import type { ToastData } from '@decky/api';
import { FC, ReactNode, createContext, useContext, useEffect, useState } from 'react';
interface PublicDeckyToasterState {
toasts: Set<ToastData>;
}
export class DeckyToasterState {
// TODO a set would be better
private _toasts: Set<ToastData> = new Set();
public eventBus = new EventTarget();
publicState(): PublicDeckyToasterState {
return { toasts: this._toasts };
}
addToast(toast: ToastData) {
this._toasts.add(toast);
this.notifyUpdate();
}
removeToast(toast: ToastData) {
this._toasts.delete(toast);
this.notifyUpdate();
}
private notifyUpdate() {
this.eventBus.dispatchEvent(new Event('update'));
}
}
interface DeckyToasterContext extends PublicDeckyToasterState {
addToast(toast: ToastData): void;
removeToast(toast: ToastData): void;
}
const DeckyToasterContext = createContext<DeckyToasterContext>(null as any);
export const useDeckyToasterState = () => useContext(DeckyToasterContext);
interface Props {
deckyToasterState: DeckyToasterState;
children: ReactNode;
}
export const DeckyToasterStateContextProvider: FC<Props> = ({ children, deckyToasterState }) => {
const [publicDeckyToasterState, setPublicDeckyToasterState] = useState<PublicDeckyToasterState>({
...deckyToasterState.publicState(),
});
useEffect(() => {
function onUpdate() {
setPublicDeckyToasterState({ ...deckyToasterState.publicState() });
}
deckyToasterState.eventBus.addEventListener('update', onUpdate);
return () => deckyToasterState.eventBus.removeEventListener('update', onUpdate);
}, []);
const addToast = deckyToasterState.addToast.bind(deckyToasterState);
const removeToast = deckyToasterState.removeToast.bind(deckyToasterState);
return (
<DeckyToasterContext.Provider value={{ ...publicDeckyToasterState, addToast, removeToast }}>
{children}
</DeckyToasterContext.Provider>
);
};
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