Added support for editable grid cells.

core/itablemodel.h

@@ -3,6 +3,7 @@
 
 #include <QString>
 #include <QAbstractTableModel>
+#include <QList>
 
 #include "core_global.h"
 
@@ -19,6 +20,17 @@ protected:
 public slots:
     void filter(const QString &filter);
     void restore();
+
+signals:
+    void editCompleted();
+
+    // QAbstractItemModel interface
+public:
+    virtual Qt::ItemFlags flags(const QModelIndex &index) const override;
+    void setEditableCols(const QList<int> cols);
+
+private:
+    QList<int> m_editableCols;
 };
 
 #endif // ITABLEMODEL_H