Fixed data base info retrieving through DBHelper, value(QString) should never be used because it is really slow. All items sorting should be done at db level or using std::sort.

custom_widgets/yacreader_treeview.h

@@ -0,0 +1,29 @@
+#ifndef YACREADER_TREEVIEW_H
+#define YACREADER_TREEVIEW_H
+
+#include <QtWidgets>
+
+class YACReaderTreeView : public QTreeView
+{
+    Q_OBJECT
+public:
+    explicit YACReaderTreeView(QWidget *parent = 0);
+    void mousePressEvent(QMouseEvent *event);
+protected slots:
+    //fix for drop auto expand
+    void expandCurrent();
+
+protected:
+    //Drop to import
+    void dragEnterEvent(QDragEnterEvent *event);
+    void dragLeaveEvent(QDragLeaveEvent *event);
+    void dragMoveEvent(QDragMoveEvent *event);
+    void dropEvent(QDropEvent *event);
+
+    //fix for drop auto expand
+    QTimer expandTimer;
+    QTimer t;
+    QPoint expandPos;
+};
+
+#endif // YACREADER_TREEVIEW_H