Added sell commodity feature.

commodity/data/commoditydata.h

@@ -14,9 +14,9 @@
 class CommodityData : public ShopItem
 {
     Q_OBJECT
+    Q_PROPERTY(QString code READ code WRITE setCode)
     Q_PROPERTY(QString name READ name WRITE setName)
     Q_PROPERTY(QString shortName READ shortName WRITE setShortName)
-    Q_PROPERTY(QString code READ code WRITE setCode)
     Q_PROPERTY(QSharedPointer<QObject> type READ type WRITE setType)
     Q_PROPERTY(QDecDouble price READ price WRITE setPrice)
     Q_PROPERTY(Enums::VatType vat READ vat WRITE setVat)
@@ -25,10 +25,10 @@ class CommodityData : public ShopItem
 public:
     CommodityData(QObject *parent = 0);
 
-    int id() const;
+    int id() override;
     void setId(int id);
 
-    QString name() const;
+    QString name() override;
     void setName(const QString &name);
 
     QString shortName() const;
@@ -60,6 +60,12 @@ private:
     int m_price;
     Enums::VatType m_vat;
     int m_count;
+
+    // IShopItem interface
+public:
+    QDecDouble unitPrice() override;
+    Enums::VatType vatType() override;
+    QString pluginId() override;
 };
 
 #endif // COMMODITYDATA_H