Method ConstructWindow

src/picker_gui.cpp:177–249

}

void PickerWindow::ConstructWindow()
{
	this->CreateNestedTree();

	/* Test if pickers should be active.*/
	bool is_active = this->callbacks.IsActive();

	this->preview_height = std::max(this->callbacks.preview_height, PREVIEW_HEIGHT);

	/* Functionality depends on widgets being present, not window class. */
	this->has_class_picker = is_active && this->GetWidget<NWidgetBase>(WID_PW_CLASS_LIST) != nullptr && this->callbacks.HasClassChoice();
	this->has_type_picker = is_active && this->GetWidget<NWidgetBase>(WID_PW_TYPE_MATRIX) != nullptr;

	if (this->has_class_picker) {
		this->GetWidget<NWidgetCore>(WID_PW_CLASS_LIST)->SetToolTip(this->callbacks.GetClassTooltip());

		this->querystrings[WID_PW_CLASS_FILTER] = &this->class_editbox;
	} else {
		if (auto *nwid = this->GetWidget<NWidgetStacked>(WID_PW_CLASS_SEL); nwid != nullptr) {
			/* Check the container orientation. MakeNWidgets adds an additional NWID_VERTICAL container so we check the grand-parent. */
			bool is_vertical = (nwid->parent->parent->type == NWID_VERTICAL);
			nwid->SetDisplayedPlane(is_vertical ? SZSP_HORIZONTAL : SZSP_VERTICAL);
		}
	}

	this->class_editbox.cancel_button = QueryString::ACTION_CLEAR;
	this->class_string_filter.SetFilterTerm(this->class_editbox.text.GetText());
	this->class_string_filter.callbacks = &this->callbacks;

	this->classes.SetListing(this->callbacks.class_last_sorting);
	this->classes.SetFiltering(this->callbacks.class_last_filtering);
	this->classes.SetSortFuncs(_class_sorter_funcs);
	this->classes.SetFilterFuncs(_class_filter_funcs);

	/* Update saved type information. */
	this->callbacks.saved = this->callbacks.UpdateSavedItems(this->callbacks.saved);

	/* Clear used type information. */
	this->callbacks.used.clear();

	if (this->has_type_picker) {
		/* Populate used type information. */
		this->callbacks.FillUsedItems(this->callbacks.used);

		SetWidgetDisabledState(WID_PW_MODE_ALL, !this->callbacks.HasClassChoice());

		this->GetWidget<NWidgetCore>(WID_PW_TYPE_ITEM)->SetToolTip(this->callbacks.GetTypeTooltip());

		auto *matrix = this->GetWidget<NWidgetMatrix>(WID_PW_TYPE_MATRIX);
		matrix->SetScrollbar(this->GetScrollbar(WID_PW_TYPE_SCROLL));

		this->querystrings[WID_PW_TYPE_FILTER] = &this->type_editbox;
	} else {
		if (auto *nwid = this->GetWidget<NWidgetStacked>(WID_PW_TYPE_SEL); nwid != nullptr) {
			/* Check the container orientation. MakeNWidgets adds an additional NWID_VERTICAL container so we check the grand-parent. */
			bool is_vertical = (nwid->parent->parent->type == NWID_VERTICAL);
			nwid->SetDisplayedPlane(is_vertical ? SZSP_HORIZONTAL : SZSP_VERTICAL);
		}