Text selection in model-view implementation

[iLLiCiT]

Hi, I want to ask if is possible (and how if possible) to make QTreeView's item's text selectable by mouse like when:

label = QLabel("Selectable text")
label.setTextInteractionFlags(Qt.TextSelectableByMouse)

I'm using customized QTreeView, QAbstractListModel and QStyledItemDelegate.
Delegate is painting QTextDocument.

Not sure if these information are enough.

Can anyone help me please?

[iLLiCiT]

I want to be able to do this kind of selection:

• select text from item and be able to copy selection with shortcut. Like QLabel when you set interaction flag TextSelectableByMouse

[iLLiCiT]

I describe it incomprehensibly or it's not possible?