Method OnClick

src/picker_gui.cpp:375–458

}

void PickerWindow::OnClick(Point pt, WidgetID widget, int)
{
	switch (widget) {
		/* Class Picker */
		case WID_PW_CLASS_LIST: {
			const auto vscroll = this->GetWidget<NWidgetScrollbar>(WID_PW_CLASS_SCROLL);
			auto it = vscroll->GetScrolledItemFromWidget(this->classes, pt.y, this, WID_PW_CLASS_LIST);
			if (it == this->classes.end()) return;

			if (this->callbacks.GetSelectedClass() != *it || HasBit(this->callbacks.mode, PFM_ALL)) {
				ClrBit(this->callbacks.mode, PFM_ALL); // Disable showing all.
				this->callbacks.SetSelectedClass(*it);
				this->InvalidateData({PickerInvalidation::Type, PickerInvalidation::Position, PickerInvalidation::Validate});
			}
			SndClickBeep();
			CloseWindowById(WC_SELECT_STATION, 0);
			break;
		}

		case WID_PW_MODE_ALL:
		case WID_PW_MODE_USED:
		case WID_PW_MODE_SAVED:
			ToggleBit(this->callbacks.mode, widget - WID_PW_MODE_ALL);
			if (!this->IsWidgetDisabled(WID_PW_MODE_ALL) && HasBit(this->callbacks.mode, widget - WID_PW_MODE_ALL)) {
				/* Enabling used or saved filters automatically enables all. */
				SetBit(this->callbacks.mode, PFM_ALL);
			}
			this->InvalidateData({PickerInvalidation::Class, PickerInvalidation::Type, PickerInvalidation::Position});
			SndClickBeep();
			break;

		case WID_PW_SHRINK:
			this->callbacks.preview_height = this->preview_height = _ctrl_pressed ? PREVIEW_HEIGHT : std::max(PREVIEW_HEIGHT, this->preview_height - STEP_PREVIEW_HEIGHT);
			this->InvalidateData({});
			this->ReInit();
			break;

		case WID_PW_EXPAND:
			this->callbacks.preview_height = this->preview_height = _ctrl_pressed ? MAX_PREVIEW_HEIGHT : std::min(MAX_PREVIEW_HEIGHT, this->preview_height + STEP_PREVIEW_HEIGHT);
			this->InvalidateData({});
			this->ReInit();
			break;

		/* Type Picker */
		case WID_PW_TYPE_ITEM: {
			int sel = this->GetWidget<NWidgetBase>(widget)->GetParentWidget<NWidgetMatrix>()->GetCurrentElement();
			assert(sel < (int)this->types.size());
			const auto &item = this->types[sel];

			if (_ctrl_pressed) {
				auto it = this->callbacks.saved.find(item);
				if (it == std::end(this->callbacks.saved)) {
					this->callbacks.saved.insert(item);
				} else {
					this->callbacks.saved.erase(it);
				}
				this->InvalidateData(PickerInvalidation::Type);
				break;