function onDelegatedClick(selector: string, handler: (element: HTMLElement, event: MouseEvent) => void): void {
    document.addEventListener('click', (event: MouseEvent) => {
        const target = event.target as HTMLElement;
        const element = target.closest(selector) as HTMLElement | null;
        if (element) {
            handler(element, event);
        }
    });
}

function onDelegatedSubmit(selector: string, handler: (form: HTMLFormElement, event: Event) => void): void {
    document.addEventListener('submit', (event: Event) => {
        const target = event.target as HTMLElement;
        const form = target.closest(selector) as HTMLFormElement | null;
        if (form) {
            handler(form, event);
        }
    });
}

function onDelegatedChange(selector: string, handler: (element: HTMLElement, event: Event) => void): void {
    document.addEventListener('change', (event: Event) => {
        const target = event.target as HTMLElement;
        const element = target.closest(selector) as HTMLElement | null;
        if (element) {
            handler(element, event);
        }
    });
}

function onDelegatedKeydown(selector: string, handler: (element: HTMLElement, event: KeyboardEvent) => void): void {
    document.addEventListener('keydown', (event: KeyboardEvent) => {
        const target = event.target as HTMLElement;
        const element = target.closest(selector) as HTMLElement | null;
        if (element) {
            handler(element, event);
        }
    });
}

function getDataAttribute(element: HTMLElement, name: string): string | undefined {
    return element.dataset[name];
}

function setDataAttribute(element: HTMLElement, name: string, value: string): void {
    element.dataset[name] = value;
}

function onClick(element: HTMLElement | null, handler: (event: MouseEvent) => void): void {
    if (element) {
        element.addEventListener('click', handler);
    }
}

function onSubmit(element: HTMLFormElement | null, handler: (event: Event) => void): void {
    if (element) {
        element.addEventListener('submit', handler);
    }
}

function onChange(element: HTMLElement | null, handler: (event: Event) => void): void {
    if (element) {
        element.addEventListener('change', handler);
    }
}

function onKeydown(element: HTMLElement | null, handler: (event: KeyboardEvent) => void): void {
    if (element) {
        element.addEventListener('keydown', handler);
    }
}

function onInput(element: HTMLElement | null, handler: (event: Event) => void): void {
    if (element) {
        element.addEventListener('input', handler);
    }
}

function preventDefault(event: Event): void {
    event.preventDefault();
}

function stopPropagation(event: Event): void {
    event.stopPropagation();
}

(window as any).events = {
    onDelegatedClick,
    onDelegatedSubmit,
    onDelegatedChange,
    onDelegatedKeydown,
    getDataAttribute,
    setDataAttribute,
    onClick,
    onSubmit,
    onChange,
    onKeydown,
    onInput,
    preventDefault,
    stopPropagation
};

export {
    onDelegatedClick,
    onDelegatedSubmit,
    onDelegatedChange,
    onDelegatedKeydown,
    getDataAttribute,
    setDataAttribute,
    onClick,
    onSubmit,
    onChange,
    onKeydown,
    onInput,
    preventDefault,
    stopPropagation
};