Method BuildSortTownList

src/town_gui.cpp:738–760

	Scrollbar *vscroll = nullptr;

	void BuildSortTownList()
	{
		if (this->towns.NeedRebuild()) {
			this->towns.clear();
			this->towns.reserve(Town::GetNumItems());

			for (const Town *t : Town::Iterate()) {
				if (this->string_filter.IsEmpty()) {
					this->towns.push_back(t);
					continue;
				}
				this->string_filter.ResetState();
				this->string_filter.AddLine(t->GetCachedName());
				if (this->string_filter.GetState()) this->towns.push_back(t);
			}

			this->towns.RebuildDone();
			this->vscroll->SetCount(this->towns.size()); // Update scrollbar as well.
		}
		/* Always sort the towns. */
		this->towns.Sort();
		this->SetWidgetDirty(WID_TD_LIST); // Force repaint of the displayed towns.
	}

	/** Sort by town name */
	static bool TownNameSorter(const Town * const &a, const Town * const &b, const bool &)