diff --git a/camp/campgrid.cpp b/camp/campgrid.cpp
index f0ae749..6ddb7f2 100644
--- a/camp/campgrid.cpp
+++ b/camp/campgrid.cpp
@@ -125,7 +125,7 @@ void CampGrid::addToVoucher(const CampDataPtr& data)
 
     shopSrv.addShopItem(voucher, campItem, 1);
     shopSrv.calculate(voucher);
-    shopSrv.saveVoucher(voucher);
+    shopSrv.save(voucher);
 
     data->setOnVoucher(true);
 
diff --git a/camp/campservice.cpp b/camp/campservice.cpp
index 4c4e5a4..39ebb08 100644
--- a/camp/campservice.cpp
+++ b/camp/campservice.cpp
@@ -357,8 +357,12 @@ void CampService::addAccFee(const CampDataPtr& data, const AddressItemPtr& item,
     }
 }
 
-QList<IShopItemPtr> CampService::shopItems()
+QList<IShopItemPtr> CampService::shopItems(const QString& category)
 {
+    if (!category.isEmpty()) {
+        return {};
+    }
+
     CampShopItemPtr item(new CampShopItem);
 
     QList<IShopItemPtr> items;
diff --git a/camp/campservice.h b/camp/campservice.h
index 68d4ff4..c4de1a1 100644
--- a/camp/campservice.h
+++ b/camp/campservice.h
@@ -36,7 +36,7 @@ private:
 
     // ISellableService interface
 public:
-    QList<IShopItemPtr> shopItems() override;
+    QList<IShopItemPtr> shopItems(const QString& category = "") override;
     IShopItemPtr shopItem(int itemId) override;
     void addedToVoucher(int itemId, int countAdded) override;
     ISeller *seller() override;
diff --git a/camp/campshopitem.cpp b/camp/campshopitem.cpp
index b396e44..f9286f3 100644
--- a/camp/campshopitem.cpp
+++ b/camp/campshopitem.cpp
@@ -28,7 +28,7 @@ Enums::VatType CampShopItem::vatType()
     return m_vatType;
 }
 
-QString CampShopItem::pluginId()
+QString CampShopItem::pluginId() const
 {
     return "CAMP";
 }
@@ -48,7 +48,7 @@ void CampShopItem::setVatType(const Enums::VatType &vatType)
     m_vatType = vatType;
 }
 
-long CampShopItem::id()
+long CampShopItem::id() const
 {
     return m_id;
 }
diff --git a/camp/campshopitem.h b/camp/campshopitem.h
index 1faed75..c2e0af6 100644
--- a/camp/campshopitem.h
+++ b/camp/campshopitem.h
@@ -10,12 +10,12 @@ public:
 
     // IShopItem interface
 public:
-    long id() override;
+    long id() const override;
     QString name() override;
     QString shortName() override;
     QDecDouble unitPrice() override;
     Enums::VatType vatType() override;
-    QString pluginId() override;
+    QString pluginId() const override;
 
     // ShopItem interface
 public:
diff --git a/commodity/CMakeLists.txt b/commodity/CMakeLists.txt
index 7290576..00d335b 100644
--- a/commodity/CMakeLists.txt
+++ b/commodity/CMakeLists.txt
@@ -40,7 +40,7 @@ add_library(commodity SHARED
         data/commoditytypedata.h
         settings/commoditysettings.cpp
         settings/commoditysettings.h
-        )
+        coloritemdelegate.cpp coloritemdelegate.h)
 
 target_compile_definitions(commodity PRIVATE -DCOMMODITY_LIBRARY)
 
diff --git a/commodity/coloritemdelegate.cpp b/commodity/coloritemdelegate.cpp
new file mode 100644
index 0000000..d54c2ed
--- /dev/null
+++ b/commodity/coloritemdelegate.cpp
@@ -0,0 +1,175 @@
+//
+// Created by Josef Rokos on 03.05.2023.
+//
+
+#include "coloritemdelegate.h"
+#include <QPainter>
+#include <QApplication>
+#include <QPaintEvent>
+#include <QHBoxLayout>
+#include <QColorDialog>
+
+ColorLabel::ColorLabel(QWidget* parent) : QWidget(parent), m_color(Qt::white) {
+    setAttribute(Qt::WA_StaticContents);
+    setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Minimum);
+    setFocusPolicy(Qt::NoFocus);
+}
+
+QColor ColorLabel::color() const {
+    return m_color;
+}
+
+void ColorLabel::setColor(const QColor& color) {
+    m_color = color;
+}
+
+QSize ColorLabel::sizeHint() const {
+    return {20,20};
+}
+
+void ColorLabel::paintEvent(QPaintEvent* event) {
+    QPainter painter(this);
+
+    QStyle* style = QApplication::style();
+    painter.save();
+    painter.setBrush(m_color);
+
+    bool dark = false;
+    qreal darkness = 1-(0.299*m_color.red() + 0.587*m_color.green() + 0.114*m_color.blue())/255;
+    if(darkness >= 0.5){
+        dark = true;
+    }
+
+    QColor penColor = dark ? Qt::transparent : Qt::darkGray;
+
+    painter.setPen(penColor);
+    int border = (event->rect().height() - style->pixelMetric(QStyle::PM_IndicatorWidth))/2;
+
+    QRect rect(event->rect().x()+border, event->rect().y()+border,
+               style->pixelMetric(QStyle::PM_IndicatorWidth),
+               style->pixelMetric(QStyle::PM_IndicatorWidth));// = option.rect.adjusted(4,4,-4,-6);
+
+    painter.drawRect(rect);
+    painter.restore();
+}
+
+ColorItemEditor::ColorItemEditor(QWidget* parent) : QWidget(parent), m_buttonPressed(false)
+{
+    m_colorIndicator = new ColorLabel(this);
+    m_colorIndicator->setColor(m_color);
+    m_button = new QToolButton(this);
+    m_button->setSizePolicy(QSizePolicy::Fixed,QSizePolicy::Fixed);
+    m_button->setText("...");
+    m_button->installEventFilter(this);
+    QHBoxLayout* layout = new QHBoxLayout(this);
+    layout->addWidget(m_colorIndicator);
+    layout->addWidget(m_button);
+    layout->setSpacing(0);
+    layout->setContentsMargins(1,1,1,1);
+    setFocusProxy(m_button);
+    setAutoFillBackground(true);
+    setLayout(layout);
+    setAutoFillBackground(true);
+    connect(m_button,SIGNAL(clicked()),this,SLOT(slotClicked()));
+}
+
+void ColorItemEditor::setColor(const QColor& value) {
+    m_color = value;
+    m_colorIndicator->setColor(value);
+}
+
+bool ColorItemEditor::eventFilter(QObject* obj, QEvent* event) {
+    if (obj == m_button){
+        if (event->type() == QEvent::FocusOut && !m_buttonPressed){
+            auto focusEvent = dynamic_cast<QFocusEvent*>(event);
+            if (focusEvent && focusEvent->reason()!=Qt::MouseFocusReason){
+                setFocusToParent();
+                emit(editingFinished());
+            }
+            return false;
+        }
+    }
+    return false;
+}
+
+void ColorItemEditor::setFocusToParent() {
+    if (parentWidget()) {
+        parentWidget()->setFocus();
+    }
+}
+
+void ColorItemEditor::slotClicked() {
+    m_buttonPressed = true;
+    auto dialog = new QColorDialog(this);
+    dialog->setCurrentColor(m_color);
+
+    if (dialog->exec()) {
+        setColor(dialog->currentColor());
+    }
+
+    delete dialog;
+    setFocusToParent();
+    emit(editingFinished());
+}
+
+ColorItemDelegate::ColorItemDelegate(QObject* parent) : QStyledItemDelegate(parent) {
+
+}
+
+void ColorItemDelegate::paint(QPainter* painter, const QStyleOptionViewItem& option, const QModelIndex& index) const {
+    QColor color(index.data().toString());
+
+    if (color.isValid()) {
+        painter->save();
+        painter->setBrush(color);
+
+        QRect rect(option.rect.x(), option.rect.y(), option.rect.width(), option.rect.height());
+        painter->drawRect(rect);
+        painter->restore();
+    } else {
+        QStyledItemDelegate::paint(painter, option, index);
+    }
+}
+
+QSize ColorItemDelegate::sizeHint(const QStyleOptionViewItem& option, const QModelIndex& index) const {
+    return QStyledItemDelegate::sizeHint(option, index);
+}
+
+QWidget* ColorItemDelegate::createEditor(QWidget* parent, const QStyleOptionViewItem& option, const QModelIndex& index) const {
+    QColor color(index.data().toString());
+    if (!color.isValid()) {
+        color = QColorConstants::Gray;
+    }
+
+    auto editor = new ColorItemEditor(parent);
+    editor->setColor(color);
+    connect(editor, &ColorItemEditor::editingFinished, this, &ColorItemDelegate::commitAndCloseEditor);
+    return editor;
+}
+
+void ColorItemDelegate::commitAndCloseEditor() {
+    auto editor = qobject_cast<ColorItemEditor*>(sender());
+    emit commitData(editor);
+    emit closeEditor(editor);
+}
+
+void ColorItemDelegate::setEditorData(QWidget* editor, const QModelIndex& index) const {
+    auto edit = qobject_cast<ColorItemEditor*>(editor);
+    QColor color(index.data().toString());
+
+    if (edit && color.isValid()) {
+        edit->setColor(color);
+    } else {
+        QStyledItemDelegate::setEditorData(editor, index);
+    }
+}
+
+void ColorItemDelegate::setModelData(QWidget* editor, QAbstractItemModel* model, const QModelIndex& index) const {
+    auto edit = qobject_cast<ColorItemEditor*>(editor);
+
+    if (edit) {
+        model->setData(index, edit->color().name());
+    } else {
+        QStyledItemDelegate::setModelData(editor, model, index);
+    }
+}
diff --git a/commodity/coloritemdelegate.h b/commodity/coloritemdelegate.h
new file mode 100644
index 0000000..f4c0729
--- /dev/null
+++ b/commodity/coloritemdelegate.h
@@ -0,0 +1,64 @@
+//
+// Created by Josef Rokos on 03.05.2023.
+//
+
+#ifndef COLORITEMDELEGATE_H
+#define COLORITEMDELEGATE_H
+
+#include <QStyledItemDelegate>
+#include <QToolButton>
+
+class ColorItemDelegate : public QStyledItemDelegate {
+    Q_OBJECT
+public:
+    explicit ColorItemDelegate(QObject* parent = nullptr);
+    ~ColorItemDelegate() override = default;
+
+    void paint(QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index) const override;
+    QSize sizeHint(const QStyleOptionViewItem &option, const QModelIndex &index) const override;
+    QWidget *createEditor(QWidget *parent, const QStyleOptionViewItem &option, const QModelIndex &index) const override;
+    void setEditorData(QWidget *editor, const QModelIndex &index) const override;
+    void setModelData(QWidget *editor, QAbstractItemModel *model, const QModelIndex &index) const override;
+
+private slots:
+    void commitAndCloseEditor();
+
+
+};
+
+class ColorLabel : public QWidget{
+Q_OBJECT
+public:
+    explicit ColorLabel(QWidget* parent = nullptr);
+    QColor color() const;
+    void setColor(const QColor &color);
+    QSize sizeHint() const override;
+protected:
+    void paintEvent(QPaintEvent *event) override;
+private:
+    QColor m_color;
+};
+
+class ColorItemEditor : public QWidget
+{
+Q_OBJECT
+public:
+    explicit ColorItemEditor(QWidget *parent = nullptr);
+    QColor color(){return m_color;}
+    void setColor(const QColor& value);
+protected:
+    bool eventFilter(QObject *obj, QEvent *event) override;
+private:
+    void setFocusToParent();
+signals:
+    void editingFinished();
+private slots:
+    void slotClicked();
+private:
+    QColor m_color;
+    QToolButton* m_button;
+    ColorLabel* m_colorIndicator;
+    bool m_buttonPressed;
+};
+
+#endif //COLORITEMDELEGATE_H
diff --git a/commodity/commodity.json b/commodity/commodity.json
index de892f8..ec44962 100644
--- a/commodity/commodity.json
+++ b/commodity/commodity.json
@@ -8,7 +8,7 @@
         "default" : "",
         "CZ" : ""
     },
-    "schemaVersion" : 1,
+    "schemaVersion" : 2,
     "sql" : [
   "CREATE TABLE \"CommodityTypeData\" (
   \"id\" INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT,
@@ -26,8 +26,13 @@ CREATE TABLE \"CommodityData\" (
   CONSTRAINT \"type_fk\"
     FOREIGN KEY (\"type\")
     REFERENCES \"CommodityTypeData\" (\"id\")
-    DEFERRABLE INITIALLY DEFERRED);"
-
+    DEFERRABLE INITIALLY DEFERRED);
+",
+"
+ALTER TABLE \"CommodityTypeData\" ADD \"color\" TEXT NULL;
+ALTER TABLE \"CommodityData\" ADD \"favorite\" INTEGER NULL;
+UPDATE \"CommodityData\" SET \"favorite\"=0;
+"
     ],
     "dependencies" : [ "SHOP" ],
     "translations" : {
diff --git a/commodity/commodityform.cpp b/commodity/commodityform.cpp
index 6a645fd..51d824a 100644
--- a/commodity/commodityform.cpp
+++ b/commodity/commodityform.cpp
@@ -25,6 +25,7 @@ CommodityForm::CommodityForm(QWidget *parent) :
        << ComboData(Enums::SECOND_LOWER,tr("Second Lower"));
     registerBinding(ui->vat, vt);
     registerBinding(ui->count);
+    registerBinding(ui->favorite);
 
     m_codeAsNumber = false;
 }
diff --git a/commodity/commodityform.ui b/commodity/commodityform.ui
index 7c376d5..4993d28 100644
--- a/commodity/commodityform.ui
+++ b/commodity/commodityform.ui
@@ -94,6 +94,13 @@
      </property>
     </widget>
    </item>
+   <item row="7" column="1">
+    <widget class="QCheckBox" name="favorite">
+     <property name="text">
+      <string>Favorite</string>
+     </property>
+    </widget>
+   </item>
   </layout>
  </widget>
  <tabstops>
diff --git a/commodity/commodityservice.cpp b/commodity/commodityservice.cpp
index 9613b3d..f70e206 100644
--- a/commodity/commodityservice.cpp
+++ b/commodity/commodityservice.cpp
@@ -1,11 +1,13 @@
 #include "commodityservice.h"
 
-QList<QSharedPointer<IShopItem> > CommodityService::shopItems()
+QList<QSharedPointer<IShopItem> > CommodityService::shopItems(const QString& category/* = ""*/)
 {
     QList<QSharedPointer<IShopItem> > ret;
 
     foreach (QSharedPointer<CommodityData> data, all()) {
-        ret.append(qSharedPointerDynamicCast<IShopItem, CommodityData>(data));
+        if (category.isEmpty() || (data->favorite() && data->category() == category)) {
+            ret.append(qSharedPointerDynamicCast<IShopItem, CommodityData>(data));
+        }
     }
 
     return ret;
diff --git a/commodity/commodityservice.h b/commodity/commodityservice.h
index c1eda86..f5ec0ee 100644
--- a/commodity/commodityservice.h
+++ b/commodity/commodityservice.h
@@ -12,7 +12,7 @@ public:
 
     // ISellableService interface
 public:
-    QList<IShopItemPtr> shopItems() override;
+    QList<IShopItemPtr> shopItems(const QString& category = "") override;
     void addedToVoucher(int itemId, int countAdded) override;
     IShopItemPtr shopItem(int itemId) override;
     ISeller *seller() override;
diff --git a/commodity/commoditysettingsform.cpp b/commodity/commoditysettingsform.cpp
index 8a27df4..0266206 100644
--- a/commodity/commoditysettingsform.cpp
+++ b/commodity/commoditysettingsform.cpp
@@ -4,6 +4,8 @@
 #include <service.h>
 #include <settingsservice.h>
 
+#include "coloritemdelegate.h"
+
 CommoditySettingsForm::CommoditySettingsForm(QWidget *parent) :
     FormBinder<CommoditySettings>(parent),
     ui(new Ui::CommoditySettingsForm)
@@ -13,9 +15,10 @@ CommoditySettingsForm::CommoditySettingsForm(QWidget *parent) :
     registerBinding(ui->codeAsNumber);
 
     m_table = new AutoTableModel<CommodityTypeData>();
-    m_table->setEditableCols(QList<int>() << 0);
+    m_table->setEditableCols(QList<int>() << 0 << 1);
     ui->commodityTypesTable->setModel(m_table);
     ui->commodityTypesTable->horizontalHeader()->setSectionResizeMode(0, QHeaderView::Stretch);
+    ui->commodityTypesTable->setItemDelegateForColumn(1, new ColorItemDelegate(this));
 }
 
 CommoditySettingsForm::~CommoditySettingsForm()
diff --git a/commodity/data/commoditydata.cpp b/commodity/data/commoditydata.cpp
index ad94843..54173ca 100644
--- a/commodity/data/commoditydata.cpp
+++ b/commodity/data/commoditydata.cpp
@@ -13,6 +13,7 @@ namespace qx {
         t.data(&CommodityData::m_price, "price");
         t.data(&CommodityData::m_vat, "vat");
         t.data(&CommodityData::m_count, "count");
+        t.data(&CommodityData::m_favorite, "favorite");
 
         t.relationManyToOne(&CommodityData::m_type, "type");
     }
@@ -25,7 +26,7 @@ CommodityData::CommodityData(QObject *parent)
     m_price = 0;
     m_vat = Enums::NONE;
 }
-long CommodityData::id()
+long CommodityData::id() const
 {
     return m_id;
 }
@@ -114,7 +115,7 @@ Enums::VatType CommodityData::vatType()
     return vat();
 }
 
-QString CommodityData::pluginId()
+QString CommodityData::pluginId() const
 {
     return "COMMODITY";
 }
@@ -123,6 +124,22 @@ QStringList CommodityData::eagerLoad() {
     return { "type" };
 }
 
+bool CommodityData::favorite() {
+    return m_favorite;
+}
+
+void CommodityData::setFavorite(bool favorite) {
+    m_favorite = favorite;
+}
+
+QString CommodityData::color() {
+    return m_type->color();
+}
+
+QString CommodityData::category() {
+    return m_type->name();
+}
+
 
 
 
diff --git a/commodity/data/commoditydata.h b/commodity/data/commoditydata.h
index e01d1aa..9d370cc 100644
--- a/commodity/data/commoditydata.h
+++ b/commodity/data/commoditydata.h
@@ -24,11 +24,12 @@ class CommodityData : public IShopItem
     Q_PROPERTY(QDecDouble price READ price WRITE setPrice)
     Q_PROPERTY(Enums::VatType vat READ vat WRITE setVat)
     Q_PROPERTY(int count READ count WRITE setCount)
+    Q_PROPERTY(bool favorite READ favorite WRITE setFavorite)
 
 public:
     explicit CommodityData(QObject *parent = nullptr);
 
-    long id() override;
+    long id() const override;
     void setId(long id);
 
     QString name() override;
@@ -52,6 +53,9 @@ public:
     int count() const;
     void setCount(int count);
 
+    bool favorite() override;
+    void setFavorite(bool favorite);
+
     Q_INVOKABLE QStringList eagerLoad();
 
 private:
@@ -63,13 +67,15 @@ private:
     int m_price;
     Enums::VatType m_vat;
     int m_count;
+    bool m_favorite;
 
     // IShopItem interface
 public:
     QDecDouble unitPrice() override;
     Enums::VatType vatType() override;
-    QString pluginId() override;
-
+    QString pluginId() const override;
+    QString color() override;
+    QString category() override;
 };
 
 typedef QSharedPointer<CommodityData> CommodityDataPtr;
diff --git a/commodity/data/commoditytypedata.cpp b/commodity/data/commoditytypedata.cpp
index 452ad18..112dbd5 100644
--- a/commodity/data/commoditytypedata.cpp
+++ b/commodity/data/commoditytypedata.cpp
@@ -7,6 +7,7 @@ namespace qx {
         t.setName("CommodityTypeData");
         t.id(&CommodityTypeData::m_id, "id");
         t.data(&CommodityTypeData::m_name, "name");
+        t.data(&CommodityTypeData::m_color, "color");
     }
 }
 
@@ -47,4 +48,12 @@ QString CommodityTypeData::toString()
     return this->name();
 }
 
+QString CommodityTypeData::color() const {
+    return m_color;
+}
+
+void CommodityTypeData::setColor(const QString& color) {
+    m_color = color;
+}
+
 
diff --git a/commodity/data/commoditytypedata.h b/commodity/data/commoditytypedata.h
index 3b6eb5f..d6e3c28 100644
--- a/commodity/data/commoditytypedata.h
+++ b/commodity/data/commoditytypedata.h
@@ -12,6 +12,7 @@ class CommodityTypeData :public ComboItem
 
     QX_REGISTER_FRIEND_CLASS(CommodityTypeData)
     Q_PROPERTY(QString name READ name WRITE setName)
+    Q_PROPERTY(QString color READ color WRITE setColor)
 
 public:
     explicit CommodityTypeData(QObject *parent = nullptr);
@@ -22,9 +23,13 @@ public:
     QString name() const;
     void setName(const QString &name);
 
+    QString color() const;
+    void setColor(const QString& color);
+
 private:
     long m_id{0};
     QString m_name;
+    QString m_color;
 
     // ComboItem interface
 public:
diff --git a/core/service.h b/core/service.h
index 95c6a4d..69c9d78 100644
--- a/core/service.h
+++ b/core/service.h
@@ -58,7 +58,7 @@ public:
         return ret;
     }
 
-    void save(QSharedPointer<T> entity, qx::QxSession* pSession = nullptr) {
+    virtual void save(QSharedPointer<T> entity, qx::QxSession* pSession = nullptr) {
         if (!checkPermission(PERM_ADD)) {
             return;
         }
@@ -83,7 +83,7 @@ public:
         emit dataChanged();
     }
 
-    void update(QSharedPointer<T> entity, qx::QxSession* pSession = nullptr) {
+    virtual void update(QSharedPointer<T> entity, qx::QxSession* pSession = nullptr) {
         if (!checkPermission(PERM_EDIT)) {
             return;
         }
diff --git a/shop/data/favorititem.cpp b/shop/data/favorititem.cpp
index 77b434e..63738dd 100644
--- a/shop/data/favorititem.cpp
+++ b/shop/data/favorititem.cpp
@@ -5,7 +5,7 @@ QX_REGISTER_CPP_SHOP(FavoritItem)
 
 QX_REGISTER_ALL_QT_PROPERTIES(FavoritItem, "id")
 
-long FavoritItem::id()
+long FavoritItem::id() const
 {
     return m_id;
 }
@@ -55,7 +55,7 @@ void FavoritItem::setVatType(const Enums::VatType &vatType)
     m_vatType = vatType;
 }
 
-QString FavoritItem::pluginId()
+QString FavoritItem::pluginId() const
 {
     return m_pluginId;
 }
diff --git a/shop/data/favorititem.h b/shop/data/favorititem.h
index 4b49372..7ebc922 100644
--- a/shop/data/favorititem.h
+++ b/shop/data/favorititem.h
@@ -30,13 +30,13 @@ public:
 
     // IShopItem interface
 public:
-    long id() override;
+    long id() const override;
     void setId(long id);
 
     QString name() override;
     void setName(const QString &name);
 
-    virtual QString shortName() override;
+    QString shortName() override;
     void setShortName(const QString &shortName);
 
     QDecDouble unitPrice() override;
@@ -45,7 +45,7 @@ public:
     Enums::VatType vatType() override;
     void setVatType(const Enums::VatType &vatType);
 
-    QString pluginId() override;
+    QString pluginId() const override;
     void setPluginId(const QString &pluginId);
 
     QString favButtonName() const;
diff --git a/shop/directsaleitem.cpp b/shop/directsaleitem.cpp
index dcd7b93..1d85dd0 100644
--- a/shop/directsaleitem.cpp
+++ b/shop/directsaleitem.cpp
@@ -6,7 +6,7 @@ DirectSaleItem::DirectSaleItem(QObject *parent) : IShopItem(parent)
     m_vat = Enums::NONE;
 }
 
-long DirectSaleItem::id()
+long DirectSaleItem::id() const
 {
     return 0;
 }
@@ -26,7 +26,7 @@ QDecDouble DirectSaleItem::unitPrice()
     return m_unitPrice;
 }
 
-QString DirectSaleItem::pluginId()
+QString DirectSaleItem::pluginId() const
 {
     return "";
 }
diff --git a/shop/directsaleitem.h b/shop/directsaleitem.h
index 3fb7a49..12fd286 100644
--- a/shop/directsaleitem.h
+++ b/shop/directsaleitem.h
@@ -22,11 +22,11 @@ public slots:
 
     // IShopItem interface
 public:
-    long id() override;
+    long id() const override;
     QString name() override;
     QString shortName() override;
     QDecDouble unitPrice() override;
-    QString pluginId() override;
+    QString pluginId() const override;
     Enums::VatType vatType() override;
 
     int count() const;
diff --git a/shop/favbutton.h b/shop/favbutton.h
index a44134e..88ab899 100644
--- a/shop/favbutton.h
+++ b/shop/favbutton.h
@@ -8,11 +8,11 @@ class FavButtonStyle : public QProxyStyle
 {
 public:
     FavButtonStyle();
-    virtual ~FavButtonStyle();
+    ~FavButtonStyle() override = default;
 
     // QStyle interface
 public:
-    void drawItemText(QPainter *painter, const QRect &rect, int flags, const QPalette &pal, bool enabled, const QString &text, QPalette::ColorRole textRole) const;
+    void drawItemText(QPainter *painter, const QRect &rect, int flags, const QPalette &pal, bool enabled, const QString &text, QPalette::ColorRole textRole) const override;
 
 private:
     Q_DISABLE_COPY(FavButtonStyle)
@@ -23,15 +23,15 @@ class FavButton : public QToolButton
     Q_OBJECT
 
 public:
-    FavButton(QWidget *parent = 0);
+    explicit FavButton(QWidget *parent = nullptr);
 
 signals:
     void itemDropped();
 
     // QWidget interface
 protected:
-    virtual void dragEnterEvent(QDragEnterEvent *event) override;
-    virtual void dropEvent(QDropEvent *event) override;
+    void dragEnterEvent(QDragEnterEvent *event) override;
+    void dropEvent(QDropEvent *event) override;
 
 private:
     FavButtonStyle m_style;
diff --git a/shop/isellableservice.h b/shop/isellableservice.h
index 994b9e6..734200e 100644
--- a/shop/isellableservice.h
+++ b/shop/isellableservice.h
@@ -12,7 +12,7 @@ class SHOPSHARED_EXPORT ISellableService
 public:
     ISellableService();
 
-    virtual QList<IShopItemPtr> shopItems() = 0;
+    virtual QList<IShopItemPtr> shopItems(const QString& category = "") = 0;
     virtual IShopItemPtr shopItem(int itemId) = 0;
     virtual void addedToVoucher(int itemId, int countAdded) = 0;
     virtual ISeller *seller() = 0;
diff --git a/shop/ishopitem.h b/shop/ishopitem.h
index 60054d2..9503ebf 100644
--- a/shop/ishopitem.h
+++ b/shop/ishopitem.h
@@ -17,20 +17,28 @@ class SHOPSHARED_EXPORT IShopItem : public QObject
     Q_PROPERTY(QString shortName READ shortName)
     Q_PROPERTY(QDecDouble unitPrice READ unitPrice)
     Q_PROPERTY(Enums::VatType vatType READ vatType)
+    Q_PROPERTY(bool favorite READ favorite)
 
 public:
     explicit IShopItem(QObject* parent = nullptr);
     ~IShopItem() override = default;
 
-    virtual long id() { return {}; }
+    virtual long id() const { return {}; }
     virtual QString name() { return {}; }
     virtual QString code() { return {}; }
     virtual QString shortName() { return {}; }
     virtual QDecDouble unitPrice() { return {}; }
     virtual Enums::VatType vatType() { return {}; }
-    virtual QString pluginId() { return {}; }
+    virtual QString pluginId() const { return {}; }
+    virtual QString color() { return {}; }
+    virtual QString category() { return {}; }
+    virtual bool favorite() { return false; }
 };
 
+inline bool operator==(const IShopItem& lhs, const IShopItem& rhs) {
+    return lhs.id() == rhs.id() && lhs.pluginId() == rhs.pluginId();
+}
+
 using IShopItemPtr = QSharedPointer<IShopItem>;
 
 QX_REGISTER_HPP_SHOP(IShopItem, QObject, 0)
diff --git a/shop/settings/shopsettingsform.cpp b/shop/settings/shopsettingsform.cpp
index 8dcf4a4..c270aa2 100644
--- a/shop/settings/shopsettingsform.cpp
+++ b/shop/settings/shopsettingsform.cpp
@@ -1,8 +1,6 @@
 #include "shopsettingsform.h"
 #include "ui_shopsettingsform.h"
 
-#include <settingsservice.h>
-#include <combodata.h>
 #include <QFileDialog>
 #include <QDragEnterEvent>
 #include <QDebug>
@@ -146,7 +144,7 @@ bool ShopSettingsForm::saveRecord()
     }
 
     foreach (QString btnName, m_btnMap.keys()) {
-        if (m_btnMap[btnName] != NULL)
+        if (m_btnMap[btnName] != nullptr)
         {
             srvFav.save(m_btnMap[btnName]);
         }
@@ -192,10 +190,6 @@ FavButtonStyle::FavButtonStyle()
 {
 }
 
-FavButtonStyle::~FavButtonStyle()
-{
-}
-
 void FavButtonStyle::drawItemText(QPainter *painter, const QRect &rect, int flags, const QPalette &pal, bool enabled, const QString &text, QPalette::ColorRole textRole) const
 {
     flags |= Qt::TextWordWrap;
diff --git a/shop/shopform.cpp b/shop/shopform.cpp
index 35cd74d..1e4e934 100644
--- a/shop/shopform.cpp
+++ b/shop/shopform.cpp
@@ -145,6 +145,7 @@ void ShopForm::loadLast()
     m_commodityModel->setData(srv.allSellableItems());
     ui->commodityTable->horizontalHeader()->setSectionResizeMode(1, QHeaderView::Stretch);
     ui->commodityTable->setColumnHidden(4, true);
+    ui->commodityTable->setColumnHidden(5, true);
     ui->commodityTable->setColumnHidden(2, true);
     ui->commodityTable->setColumnWidth(3, 90);
 
@@ -167,22 +168,20 @@ void ShopForm::loadButtons(const ShopSettingsPtr& settings)
     Service<FavoritItem> srvFav;
     QMap<QString, FavoritItemPtr> btnMap;
 
-    foreach (QWidget *child, ui->favorites->findChildren<QWidget*>()) {
-        if (child->objectName() != "directSale")
-        {
-            delete child;
-        }
-    }
+    clearFavButtons();
 
     foreach (FavoritItemPtr item, srvFav.all()) {
         btnMap[item->favButtonName()] = item;
     }
 
+    ShopService srv;
+    auto allItems = srv.allSellableItems();
+
     for (int i = 0; i < settings->favBtnRows(); i++)
     {
         for (int j = 0; j < settings->favBtnCols(); j++)
         {
-            FavButton *btn = new FavButton(ui->favorites);
+            auto *btn = new QToolButton(ui->favorites);
             QString btnName = QString::number(i) + "_" + QString::number(j);
             btn->setObjectName(btnName);
 
@@ -197,6 +196,16 @@ void ShopForm::loadButtons(const ShopSettingsPtr& settings)
             if (btnMap[btnName] != nullptr)
             {
                 btn->setText(btnMap[btnName]->shortName());
+
+                auto shItem = std::find_if(allItems.begin(), allItems.end(),[btnMap, btn](auto it) -> bool {
+                    return btnMap[btn->objectName()]->refId() == it->id() && btnMap[btn->objectName()]->pluginId() == it->pluginId();
+                });
+
+                if (shItem != allItems.end()) {
+                    btn->setStyleSheet("background: " + shItem->data()->color() + ";");
+                    btn->update();
+                }
+
                 connect(btn, &FavButton::clicked, [this, btnMap, btn](bool){
                     FavoritItemPtr item = btnMap[btn->objectName()];
 
@@ -249,6 +258,7 @@ void ShopForm::setupForm()
     loadLast();
     fillReceiptCombo();
     loadButtons(settings);
+    loadCatButtons();
 }
 
 void ShopForm::on_directSale_clicked()
@@ -514,7 +524,7 @@ void ShopForm::recalculate()
 
     if (m_voucher->status() == Voucher::NEW && m_voucher->id() == 0)
     {
-        srv.saveVoucher(m_voucher);
+        srv.save(m_voucher);
     }
     else
     {
@@ -664,3 +674,107 @@ void ShopForm::on_actualReceipt_customContextMenuRequested(const QPoint &pos)
     QPoint globalPos = ui->actualReceipt->mapToGlobal(pos);
     m_itemCtxMenu->exec(globalPos);
 }
+
+void ShopForm::clearFavButtons() {
+    foreach (QWidget *child, ui->favorites->findChildren<QWidget*>()) {
+        if (child->objectName() != "directSale")
+        {
+            delete child;
+        }
+    }
+}
+
+void ShopForm::loadFavCatButtons(const QString& category) {
+    SettingsService srvSettings("SHOP");
+    ShopSettingsPtr settings = srvSettings.loadSettings<ShopSettings>();
+
+    if (category.isEmpty()) {
+        loadButtons(settings);
+        return;
+    }
+
+    clearFavButtons();
+
+    ShopService srv;
+    auto all = srv.allSellableItems(category);
+
+    if (all.count() == 0) {
+        return;
+    }
+
+    auto square = std::sqrt(all.count());
+    int cols = static_cast<int>(square);
+    int rows = cols;
+
+    if (square - cols != 0) {
+        if (cols > 1) {
+            ++rows;
+        } else {
+            ++cols;
+        }
+    }
+
+    if (cols * rows < all.count()) {
+        ++cols;
+    }
+
+    int index = 0;
+    for (int i = 0; i < rows; i++) {
+        for (int j = 0; j < cols; j++) {
+            if (index >= all.count()) {
+                break;
+            }
+
+            auto item = all[index];
+            ++index;
+            auto *btn = new QToolButton(ui->favorites);
+
+            if (settings->favBtnSize() > 0)
+            {
+                btn->setMinimumHeight(settings->favBtnSize());
+                btn->setMinimumWidth(settings->favBtnSize());
+            }
+
+            btn->setText(item->shortName());
+            btn->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Fixed);
+            ((QGridLayout*)ui->favorites->layout())->addWidget(btn, i + 1, j);
+
+            btn->setStyleSheet("background: " + item->color() + ";");
+            btn->update();
+
+            connect(btn, &QToolButton::clicked, [this, item](bool){
+                addItem(item, 1);
+            });
+        }
+    }
+}
+
+void ShopForm::loadCatButtons() {
+    ShopService srv;
+    auto allCat = srv.allCategories();
+
+    for (const auto btnFav : ui->widgetCategories->findChildren<QWidget*>()) {
+        if (btnFav->objectName() != "btnFav") {
+            delete btnFav;
+        }
+    }
+
+    for (const auto& cat : allCat.keys()) {
+        auto catButton = new QToolButton(ui->widgetCategories);
+        catButton->setText(cat);
+        catButton->setMinimumHeight(45);
+        catButton->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Fixed);
+        catButton->setStyleSheet("background: " + allCat[cat] + ";");
+        catButton->update();
+
+        connect(catButton, &QPushButton::clicked, [this, cat](bool){
+            loadFavCatButtons(cat);
+        });
+
+        ui->widgetCategories->layout()->addWidget(catButton);
+    }
+}
+
+void ShopForm::on_btnFav_clicked() {
+    loadFavCatButtons("");
+}
diff --git a/shop/shopform.h b/shop/shopform.h
index 61abdc3..5a494b0 100644
--- a/shop/shopform.h
+++ b/shop/shopform.h
@@ -42,6 +42,8 @@ private slots:
 
     void on_payButton_clicked();
 
+    void on_btnFav_clicked();
+
     void on_showPaidButton_clicked();
 
     void on_btnAddItem_clicked();
@@ -67,6 +69,9 @@ private:
 
     void loadLast();
     void loadButtons(const ShopSettingsPtr& settings);
+    void loadFavCatButtons(const QString& category);
+    void loadCatButtons();
+    void clearFavButtons();
     void fillReceiptCombo();
     void createVoucher();
     void doTempSave(bool comboChanged);
diff --git a/shop/shopform.ui b/shop/shopform.ui
index a87b397..e9037af 100644
--- a/shop/shopform.ui
+++ b/shop/shopform.ui
@@ -35,6 +35,73 @@
       <property name="bottomMargin">
        <number>0</number>
       </property>
+      <item>
+       <widget class="QWidget" name="widgetButtons" native="true">
+        <layout class="QVBoxLayout" name="verticalLayout">
+         <item>
+          <widget class="QToolButton" name="directSale">
+           <property name="font">
+            <font>
+             <pointsize>10</pointsize>
+            </font>
+           </property>
+           <property name="text">
+            <string>Direct Sell</string>
+           </property>
+           <property name="icon">
+            <iconset resource="shoprc.qrc">
+             <normaloff>:/icons/shop.svg</normaloff>:/icons/shop.svg</iconset>
+           </property>
+           <property name="iconSize">
+            <size>
+             <width>45</width>
+             <height>45</height>
+            </size>
+           </property>
+           <property name="shortcut">
+            <string>Ctrl+D</string>
+           </property>
+           <property name="toolButtonStyle">
+            <enum>Qt::ToolButtonTextUnderIcon</enum>
+           </property>
+           <property name="autoRaise">
+            <bool>true</bool>
+           </property>
+          </widget>
+         </item>
+         <item>
+          <widget class="QWidget" name="widgetCategories" native="true">
+           <layout class="QHBoxLayout" name="horizontalLayout_5">
+            <item>
+             <widget class="QPushButton" name="btnFav">
+              <property name="minimumSize">
+               <size>
+                <width>0</width>
+                <height>45</height>
+               </size>
+              </property>
+              <property name="text">
+               <string>Favorities</string>
+              </property>
+             </widget>
+            </item>
+           </layout>
+          </widget>
+         </item>
+         <item>
+          <widget class="QWidget" name="favorites" native="true">
+           <property name="sizePolicy">
+            <sizepolicy hsizetype="Preferred" vsizetype="MinimumExpanding">
+             <horstretch>0</horstretch>
+             <verstretch>0</verstretch>
+            </sizepolicy>
+           </property>
+           <layout class="QGridLayout" name="gridLayout"/>
+          </widget>
+         </item>
+        </layout>
+       </widget>
+      </item>
       <item>
        <widget class="QWidget" name="widgetComodity" native="true">
         <layout class="QVBoxLayout" name="verticalLayout_3">
@@ -110,49 +177,6 @@
         </layout>
        </widget>
       </item>
-      <item>
-       <widget class="QWidget" name="widgetButtons" native="true">
-        <layout class="QVBoxLayout" name="verticalLayout">
-         <item>
-          <widget class="QWidget" name="favorites" native="true">
-           <layout class="QGridLayout" name="gridLayout">
-            <item row="0" column="0">
-             <widget class="QToolButton" name="directSale">
-              <property name="font">
-               <font>
-                <pointsize>10</pointsize>
-               </font>
-              </property>
-              <property name="text">
-               <string>Direct Sell</string>
-              </property>
-              <property name="icon">
-               <iconset resource="shoprc.qrc">
-                <normaloff>:/icons/shop.svg</normaloff>:/icons/shop.svg</iconset>
-              </property>
-              <property name="iconSize">
-               <size>
-                <width>45</width>
-                <height>45</height>
-               </size>
-              </property>
-              <property name="shortcut">
-               <string>Ctrl+D</string>
-              </property>
-              <property name="toolButtonStyle">
-               <enum>Qt::ToolButtonTextUnderIcon</enum>
-              </property>
-              <property name="autoRaise">
-               <bool>true</bool>
-              </property>
-             </widget>
-            </item>
-           </layout>
-          </widget>
-         </item>
-        </layout>
-       </widget>
-      </item>
       <item>
        <widget class="QWidget" name="widget_2" native="true">
         <layout class="QVBoxLayout" name="verticalLayout_6">
diff --git a/shop/shopitem.h b/shop/shopitem.h
index ebd183c..ed04f34 100644
--- a/shop/shopitem.h
+++ b/shop/shopitem.h
@@ -25,13 +25,13 @@ public slots:
 
     // IShopItem interface
 public:
-    long id() override { return 0; }
+    long id() const override { return 0; }
     QString code() override { return ""; }
     QString name() override { return ""; }
     QString shortName() override { return ""; }
     QDecDouble unitPrice() override { return {}; }
     Enums::VatType vatType() override { return Enums::NONE; }
-    QString pluginId() override { return ""; }
+    QString pluginId() const override { return ""; }
 };
 
 typedef QSharedPointer<ShopItem> ShopItemPtr;
diff --git a/shop/shopservice.cpp b/shop/shopservice.cpp
index 39b90ed..c3a18b7 100644
--- a/shop/shopservice.cpp
+++ b/shop/shopservice.cpp
@@ -371,7 +371,7 @@ void ShopService::moveItems(QList<VoucherItemPtr> items, VoucherPtr source, Vouc
 
     if (target->status() == Voucher::NEW && target->id() == 0)
     {
-        this->saveVoucher(target, &session);
+        this->save(target, &session);
     }
 
     for (const auto& it : items) {
@@ -415,7 +415,7 @@ QList<VoucherPtr> ShopService::vouchersForEet()
                .arg(QString::number(Voucher::PAID), QString::number(Voucher::EET_SENT), QString::number(Voucher::EET_NOT_ENTERING)));
 }
 
-QList<IShopItemPtr> ShopService::allSellableItems()
+QList<IShopItemPtr> ShopService::allSellableItems(const QString& category/* = ""*/)
 {
     QList<QSharedPointer<IShopItem> > items;
     foreach (IPlugin *plugin, Context::instance().plugins()) {
@@ -424,7 +424,7 @@ QList<IShopItemPtr> ShopService::allSellableItems()
 
         if (selSrv != nullptr)
         {
-            items.append(selSrv->shopItems());
+            items.append(selSrv->shopItems(category));
         }
     }
 
@@ -491,13 +491,58 @@ QDecDouble ShopService::vatRate(Enums::VatType vatType)
     return vatRate;
 }
 
-void ShopService::saveVoucher(VoucherPtr entity, qx::QxSession* pSession/* = nullptr*/)
+void ShopService::save(VoucherPtr entity, qx::QxSession* pSession/* = nullptr*/)
 {
     SeasonService seasonSrv;
     SeasonPtr season = seasonSrv.active();
     entity->setSeason(season);
 
     addDateAndUser(entity, true);
-    save(entity, pSession);
+    Service::save(entity, pSession);
+}
+
+QMap<QString, QString> ShopService::allCategories() {
+    QMap<QString, QString> ret;
+
+    for (const auto& item : allSellableItems()) {
+        if (!item->category().isEmpty() && !ret.contains(item->category())) {
+            ret[item->category()] = item->color();
+        }
+    }
+
+    return ret;
+}
+
+void ShopService::update(VoucherPtr entity, qx::QxSession* pSession) {
+    bool reloadItems = pSession == nullptr;
+
+    {
+        QScopedPointer<qx::QxSession> ptrSession;
+
+        if (pSession == nullptr) {
+            ptrSession.reset(new qx::QxSession());
+            pSession = ptrSession.data();
+        }
+
+        Service::update(entity, pSession);
+        auto oldItems = entity->items();
+        entity->clearItems();
+        load(entity);
+
+        for (auto item : entity->items()) {
+            auto newItem = std::find_if(oldItems.begin(), oldItems.end(), [item](auto it){
+                return item->id() == it->id();
+            });
+
+            if (newItem == oldItems.end()) {
+                qx::dao::delete_by_id(item, pSession->database());
+            }
+        }
+    }
+
+    if (reloadItems) {
+        entity->clearItems();
+        load(entity);
+    }
 }
 
diff --git a/shop/shopservice.h b/shop/shopservice.h
index 780dfcc..a7b2a91 100644
--- a/shop/shopservice.h
+++ b/shop/shopservice.h
@@ -27,7 +27,8 @@ public:
     void calculate(VoucherPtr voucher);
     void calculateItem(VoucherItemPtr item);
     void pay(VoucherPtr voucher);
-    void saveVoucher(VoucherPtr entity, qx::QxSession* pSession = nullptr);
+    void save(VoucherPtr entity, qx::QxSession* pSession = nullptr) override;
+    void update(VoucherPtr entity, qx::QxSession* pSession = nullptr) override;
     void moveItems(QList<VoucherItemPtr> items, VoucherPtr source, VoucherPtr target);
     void updateRelatedItem(VoucherItem* item, int countAdded);
     bool processEet(VoucherPtr voucher, QString &message);
@@ -40,7 +41,8 @@ public:
     QList<VoucherPtr> tempVouchers();
     QList<VoucherPtr> paiedVouchers();
     QList<VoucherPtr> vouchersForEet();
-    QList<IShopItemPtr> allSellableItems();
+    QList<IShopItemPtr> allSellableItems(const QString& category = "");
+    QMap<QString, QString> allCategories();
     VoucherSum unpaidSummary();
     VoucherSum unsendEET();