Keep QTableView scrolling to the last row when the model is growing

Question

I've a QTableView in a pyqt application. I continuously append rows to the underlying model. And what I want is the view to continuously scroll to the last, most recent row (is that behavior called "autoscrolling"?). But instead, the view does not scroll at all (automatically) and stays at its position. Can I enable this autoscrolling behavior somehow or do I need to code something to achieve it? Cheers, Wolfgang

Accepted Answer

There is no default autoscrolling feature, but you can get the behavior relatively simple. Your model will emit `rowsInserted` when you insert/append rows. You can connect to that signal and call `scrollToBottom` on your view.

There is one problem though. View needs to adjust itself, because it won't put the item at the bottom immediately when `rowsInserted` fires. Calling `scrollToBottom` within a `QTimer.singleShot` solves this because `QTimer` will wait until there are no pending events (like update of the view).

Assuming the model is stored as `self.model` and view is `self.view`, this is how it'll look:

```
self.model.rowsInserted.connect(self.autoScroll)
```

and the `autoScroll` method:

```
def autoScroll(self):
    QtCore.QTimer.singleShot(0, self.view.scrollToBottom)
```

Or if you prefer not having a seperate method for this:

```
self.model.rowsInserted.connect(lambda: QtCore.QTimer.singleShot(0, self.view.scrollToBottom))
```

Keep QTableView scrolling to the last row when the model is growing

Solution

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