add core files

Classes/TreeModel.h

@@ -0,0 +1,68 @@
+#ifndef __TREEMODEL_HPP__
+#define __TREEMODEL_HPP__
+
+#include <QtCore/QObject>
+#include <QtCore/qabstractitemmodel.h>
+
+
+class TreeModel : public QAbstractItemModel
+{
+    class Item
+    {
+    public:
+        Item();
+
+        inline unsigned id(void) const {return _id;}
+
+        void clear(void);
+        bool insertRow(int row);
+
+        QVariant data(int role) const;
+        void setData(const QVariant & value,  int role);
+
+        inline Item * parent(void) const {return _parent;}
+        inline void setParent(Item * parent) {_parent = parent;}
+
+        int childrenCount(void) const;
+        const Item * child(int index) const;
+        Item * child(int index);
+        int childRow(const Item * child) const;
+
+    private:
+        unsigned            _id;
+        Item *              _parent;
+        QMap<int,  QVariant> _data;
+        QList<Item>         _children;
+
+        static unsigned next_id;
+    };
+
+public:
+    TreeModel(QObject * parent = 0);
+    TreeModel(unsigned columns,  QObject * parent = 0);
+
+    /* Read-Only model members */
+    virtual QModelIndex index(int row , int column,  const QModelIndex & parent = QModelIndex()) const;
+    virtual QModelIndex parent(const QModelIndex & index) const;
+    virtual int rowCount(const QModelIndex & parent = QModelIndex()) const;
+    virtual int columnCount(const QModelIndex & parent = QModelIndex()) const;
+    virtual QVariant data(const QModelIndex & index,  int role) const;
+    virtual QVariant headerData(int section,  Qt::Orientation orientation,  int role = Qt::DisplayRole) const;
+
+    /* Editable Model members */
+    bool insertRow(int row,  const QModelIndex & parent = QModelIndex());
+    virtual bool setData(const QModelIndex & index,  const QVariant & value,  int role = Qt::EditRole);
+
+    void clear(void);
+
+private:
+    Item * get_item(const QModelIndex & index);
+    const Item * get_item(const QModelIndex & index) const;
+
+private:
+    unsigned _columnCount;
+    QList<QString> _horizontalHeader;
+    Item _root;
+};
+
+#endif //__TREEMODEL_HPP__