closes #1: Favorite buttons has been extended with category buttons.

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