Explicitly set focus on text box

[glassez]

Closes #20084.

[thalieht]

It works but it's not the only place that needs this:

• Add category... is not focused in Name field anymore
• Add subcategory...
• Edit category... for Save path
• Add peers... in peerlist
• Add trackers... in trackerlist
• Edit trackers... in transferlist
• Add torrent links
• Off topic (not focused with Qt 6.4.3 either): maybe if you want while you're at it, focus Path in Torrent creator

Not sure if i've found everything.

[jinliu]

It works but it's not the only place that needs this:

Could this actually be a Qt bug, and should be fixed there? Yeah the Qt document doesn't specify the default focus policy for dialogs, but I don't think Qt should change it in an x.y.1 release. So it might be an unintended change.

[glassez]

Could this actually be a Qt bug, and should be fixed there? Yeah the Qt document doesn't specify the default focus policy for dialogs, but I don't think Qt should change it in an x.y.1 release.

If it was not declared to behave in a certain way, then it is not entirely correct to call such a change a bug, especially since it could not have been changed on purpose. It's better to set focus (or maybe even tab order) explicitly.

[glassez]

@thalieht, I want to try several things, but I still have no opportunity to install v6.6.1. Can you test current try?

P.S. it should be compilable with Qt 6.6.0+.

Forget. I still got Qt 6.6.1. Unfortunately, latest approach doesn't work.
I'll explore it further.

[glassez]

Now I believe it is really Qt bug.

Could you follow QTBUG-120049 and provide more info if any?

[jinliu]

I guess you can't call setFocus() before showing the dialog:
https://doc.qt.io/qt-6/qwidget.html#setFocus-1

... if this widget or one of its parents is the active window.

This suggests using a timer to delay calling setFocus():

    QTimer::singleShot(0, this, [this]
    {
        l2->setFocus();
    });

[glassez]

I guess you can't call setFocus() before showing the dialog

I can. And it works.
But now I would prefer to avoid add such workarounds and let Qt to fix this bug.

[luzpaz]

Maybe we all can facilitate interest in the upstream QTBUG-120049 by voting for it ?