Class ButtonInput

src/webpage/settings.ts:393–426

		input.checked = this.value;
		input.oninput = this.onChange.bind(this);
		this.input = new WeakRef(input);
		div.append(input);
		return div;
	}
	private onChange() {
		this.owner.changed();
		const input = this.input.deref();
		if (input) {
			const value = input.checked as boolean;
			this.value = value;
			this.onchange(value);
		}
	}
	setState(state: boolean) {
		if (this.input) {
			const checkbox = this.input.deref();
			if (checkbox) {
				checkbox.checked = state;
				this.value = state;
			}
		}
	}
	onchange: (str: boolean) => void = (_) => {};
	watchForChange(func: (str: boolean) => void) {
		this.onchange = func;
	}
	submit() {
		this.onSubmit(this.value);
	}
}

class SubButtonInput implements OptionsElement<void> {
	readonly owner: Options;
	readonly onClick: (opt: Options) => void;
	textContent: string;
	value!: void;
	opts?: {noSubmit?: boolean; ltr?: boolean; intText?: string};