implement entire project in nodes

Project items are now represented directly in nodes opening up more versatility and possibilities. This is the first iteration of this and will be buggy. Need to test thoroughly.

app/project/projectviewmodel.h

@@ -99,99 +99,11 @@ public:
   virtual QMimeData * mimeData(const QModelIndexList &indexes) const override;
   virtual bool dropMimeData(const QMimeData *data, Qt::DropAction action, int row, int column, const QModelIndex &parent) override;
 
-  /** Other model functions */
-  void AddChild(Item* parent, Item* child);
-  void RemoveChild(Item* parent, Item* child, QObject* new_parent);
-  void RenameChild(Item* item, const QString& name);
-
   /**
    * @brief Convenience function for creating QModelIndexes from an Item object
    */
   QModelIndex CreateIndexFromItem(Item* item, int column = 0);
 
-  /**
-   * @brief An UndoCommand for moving an item from one folder to another folder
-   */
-  class MoveItemCommand : public UndoCommand {
-  public:
-    MoveItemCommand(ProjectViewModel* model, Item* item, Folder* destination);
-
-    virtual Project* GetRelevantProject() const override;
-
-    virtual void redo() override;
-
-    virtual void undo() override;
-
-  private:
-    ProjectViewModel* model_;
-    Item* item_;
-    Folder* source_;
-    Folder* destination_;
-
-  };
-
-  /**
-   * @brief An UndoCommand for renaming an item
-   */
-  class RenameItemCommand : public UndoCommand {
-  public:
-    RenameItemCommand(ProjectViewModel* model, Item* item, const QString& name);
-
-    virtual Project* GetRelevantProject() const override;
-
-    virtual void redo() override;
-
-    virtual void undo() override;
-
-  private:
-    ProjectViewModel* model_;
-    Item* item_;
-    QString old_name_;
-    QString new_name_;
-  };
-
-  /**
-   * @brief An UndoCommand for adding an item
-   */
-  class AddItemCommand : public UndoCommand {
-  public:
-    AddItemCommand(ProjectViewModel* model, Item* folder, Item *child);
-
-    virtual Project* GetRelevantProject() const override;
-
-    virtual void redo() override;
-
-    virtual void undo() override;
-
-  private:
-    ProjectViewModel* model_;
-    Item* parent_;
-    Item* child_;
-    QObject memory_manager_;
-
-  };
-
-  /**
-   * @brief An undo command for removing an item
-   */
-  class RemoveItemCommand : public UndoCommand {
-  public:
-    RemoveItemCommand(ProjectViewModel* model, Item* item);
-
-    virtual Project* GetRelevantProject() const override;
-
-    virtual void redo() override;
-
-    virtual void undo() override;
-
-  private:
-    ProjectViewModel* model_;
-    Item* item_;
-    Item* parent_;
-    QObject memory_manager_;
-
-  };
-
 private:
   /**
    * @brief Retrieve the index of `item` in its parent
@@ -205,17 +117,6 @@ private:
    */
   int IndexOfChild(Item* item) const;
 
-  /**
-   * @brief Get the child count of an index
-   *
-   * @param index
-   *
-   * @return
-   *
-   * Return number of children (immediate children only)
-   */
-  int ChildCount(const QModelIndex& index);
-
   /**
    * @brief Retrieves the Item object from a given index
    *
@@ -230,21 +131,25 @@ private:
    */
   bool ItemIsParentOfChild(Item* parent, Item* child) const;
 
-  /**
-   * @brief Moves an item to a new destination updating all views in the process
-   *
-   * This function will emit a signal indicating that rows are moving, set `destination` as the new parent of `item`,
-   * and then emit a signal that the row has finished moving.
-   *
-   * It's not recommended to use this function directly in most cases since it does not create an UndoCommand allowing
-   * the user to undo the move. Instead this function should primarily be called from UndoCommands belonging to this
-   * class (e.g. MoveItemCommand).
-   */
-  void MoveItemInternal(Item* item, Item* destination);
+  void ConnectItem(Item* n);
+
+  void DisconnectItem(Item* n);
 
   Project* project_;
 
   QVector<ColumnType> columns_;
+
+private slots:
+  void FolderBeginInsertItem(Item* n, int insert_index);
+
+  void FolderEndInsertItem();
+
+  void FolderBeginRemoveItem(Item* n, int child_index);
+
+  void FolderEndRemoveItem();
+
+  void ItemRenamed();
+
 };
 
 }