Save buttons on ShopForm are now disabled if no items on receipt.

shop/shopform.cpp

@@ -15,6 +15,9 @@ ShopForm::ShopForm(QWidget *parent) :
 {
     ui->setupUi(this);
     m_itemsModel = NULL;
+
+    ui->temporarySaveButton->setEnabled(false);
+    ui->saveButton->setEnabled(false);
 }
 
 ShopForm::~ShopForm()
@@ -43,6 +46,8 @@ void ShopForm::loadLast()
         connectItemSignals();
 
         ui->total->setText(QString::number(m_voucher->totalPrice().toDouble(), 'f', 2));
+        ui->temporarySaveButton->setEnabled(true);
+        ui->saveButton->setEnabled(true);
     }
 }
 
@@ -119,6 +124,8 @@ void ShopForm::onCountChanged()
     ShopService srv;
     srv.calculate(m_voucher);
     ui->total->setText(QString::number(m_voucher->totalPrice().toDouble(), 'f', 2));
+    ui->temporarySaveButton->setEnabled(!m_voucher->items().isEmpty());
+    ui->saveButton->setEnabled(!m_voucher->items().isEmpty());
 
     if (m_voucher->status() == Voucher::NEW && m_voucher->id() == 0)
     {
@@ -158,6 +165,8 @@ void ShopForm::doTempSave(bool comboChanged)
         {
             m_voucher = srv.createVoucher();
             ui->total->setText("0");
+            ui->temporarySaveButton->setEnabled(false);
+            ui->saveButton->setEnabled(false);
         }
 
         fillRaceiptCombo();
@@ -181,6 +190,9 @@ void ShopForm::changeReceipt()
     m_itemsModel->setData(m_voucher->items());
     ui->total->setText(m_voucher->totalPrice().toString());
 
+    ui->temporarySaveButton->setEnabled(true);
+    ui->saveButton->setEnabled(true);
+
     fillRaceiptCombo();
 }