Method OnDropdownClose

src/window.cpp:286–308

* A dropdown window associated to this window has been closed. * @param pt the point inside the window the mouse resides on after closure. * @param widget the widget (button) that the dropdown is associated with. * @param index the element in the dropdown that is selected. * @param instant_close whether the dropdown was configured to close on mouse up. */

 * @param instant_close whether the dropdown was configured to close on mouse up.
 */
void Window::OnDropdownClose(Point pt, WidgetID widget, int index, int click_result, bool instant_close)
{
	if (widget < 0) return;

	/* Many dropdown selections depend on the position of the main toolbar,
	 * so if it doesn't exist (e.g. the end screen has appeared), just skip the instant close behaviour. */
	if (instant_close && FindWindowById(WC_MAIN_TOOLBAR, 0) != nullptr) {
		/* Send event for selected option if we're still
		 * on the parent button of the dropdown (behaviour of the dropdowns in the main toolbar). */
		if (GetWidgetFromPos(this, pt.x, pt.y) == widget) {
			this->OnDropdownSelect(widget, index, click_result);
		}
	}

	/* Raise the dropdown button */
	NWidgetCore *nwi2 = this->GetWidget<NWidgetCore>(widget);
	if ((nwi2->type & WWT_MASK) == NWID_BUTTON_DROPDOWN) {
		nwi2->disp_flags.Reset(NWidgetDisplayFlag::DropdownActive);
	} else {
		this->RaiseWidget(widget);
	}
	this->SetWidgetDirty(widget);
}

/**
 * Return the Scrollbar to a widget index.