struct OpenClose : UINode
{
	void Render(UIContainer* ctx) override
	{
		ctx->PushBox();

		cb = ctx->Element<UICheckbox>();
		cb->SetValue(open);

		openBtn = ctx->Element<UIButton>();
		openBtn->SetText("Open");

		closeBtn = ctx->Element<UIButton>();
		closeBtn->SetText("Close");

		if (open)
		{
			ctx->PushBox();
			ctx->Text("It is open!");
			ctx->Pop();
		}

		ctx->Pop();
	}
	void OnEvent(UIEvent& e) override
	{
		if (e.type == UIEventType::Click)
		{
			if (e.target == openBtn || e.target == closeBtn)
			{
				open = e.target == openBtn;
				e.context->Rebuild(this);
			}
		}
		if (e.type == UIEventType::Change)
		{
			if (e.target == cb)
			{
				open = cb->GetValue();
				e.context->Rebuild(this);
			}
		}
	}

	bool open = false;

	UICheckbox* cb;
	UIButton* openBtn;
	UIButton* closeBtn;
};