Set to define last value when creating new delegate.

--HG--
branch : develop

src/app/widgets/doubledelegate.cpp

@@ -40,11 +40,18 @@
  * @return editor to be used for editing the data item.
  */
 //cppcheck-suppress unusedFunction
+DoubleSpinBoxDelegate::DoubleSpinBoxDelegate(QObject *parent): QItemDelegate(parent), lastValue(-10001.0)
+{
+    //Little hack. Help save value in const method.
+    connect(this, &DoubleSpinBoxDelegate::NewLastValue, this, &DoubleSpinBoxDelegate::SetLastValue);
+}
+
 QWidget *DoubleSpinBoxDelegate::createEditor(QWidget *parent, const QStyleOptionViewItem &option,
                                              const QModelIndex &index ) const
 {
     Q_UNUSED(option);
     Q_UNUSED(index);
+    emit NewLastValue(-10001.0);//Here need reset value to default because we begin work with new item
     QDoubleSpinBox *editor = new QDoubleSpinBox(parent);
     editor->setMinimum(-10000.0);
     editor->setMaximum(10000.0);
@@ -119,3 +126,9 @@ void DoubleSpinBoxDelegate::commitAndCloseEditor()
     }
     emit closeEditor(spinBox);
 }
+
+//---------------------------------------------------------------------------------------------------------------------
+void DoubleSpinBoxDelegate::SetLastValue(const qreal &newLastValue)
+{
+    lastValue = newLastValue;
+}

src/app/widgets/doubledelegate.h

@@ -43,13 +43,21 @@ public:
      * @brief DoubleSpinBoxDelegate constructor.
      * @param parent parent object.
      */
-    DoubleSpinBoxDelegate(QObject *parent = nullptr): QItemDelegate(parent), lastValue(-10001.0){}
+    DoubleSpinBoxDelegate(QObject *parent = nullptr);
     QWidget *createEditor(QWidget *parent, const QStyleOptionViewItem &option, const QModelIndex &index) const;
     void    setEditorData(QWidget *editor, const QModelIndex &index) const;
     void    setModelData(QWidget *editor, QAbstractItemModel *model, const QModelIndex &index) const;
     void    updateEditorGeometry(QWidget *editor, const QStyleOptionViewItem &option, const QModelIndex &index) const;
+signals:
+    /**
+     * @brief NewLastValue help reset last value in const method (hack).
+     * @param text text.
+     */
+    void    NewLastValue(const qreal &newLastValue) const;
 public slots:
     void    commitAndCloseEditor();
+private slots:
+    void    SetLastValue(const qreal &newLastValue);
 private:
     /** @brief lastValue last saved value. */
     qreal lastValue;