Is there an elegant way to activate a tab in which a focused widget is located?

I have a QLineEdit inside a widget insi开发者_如何学JAVAde a QTabWidget. Let's say that tab is at tab index 2. When currently active tab is at index 1, and I call setFocus() (and show(), and raise()) on the QLineEdit, the active tab doesn't switch to index 2 to show the focused widget.

Is there any elegant way to show the focused widget's tab when that widget gets focus?

Thanks!

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Here's a more generic function to switch to the tab containing a widget:

void SwitchToTabContaining(QTabWidget * tabsW, QWidget * w)
{
    for(int i=0;i<tabsW->count();++i) {
        QWidget * tab = tabsW->widget(i);
        if(tab->isAncestorOf(w)) {
            tabsW->setCurrentWidget(tab);
            break;
        }
    }
}

It's not tested but you should get the idea of how it works.

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Assuming the QTabWidget is named qtab:

In the QLineEdit's focusInEvent:

QTabBar* bar = qtab->tabBar();
bar->setCurrentIndex(2);

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And for your specific case, where you're sure the QLineEdit is a child of one of your tab widgets:

myTabWidget->setCurrentIndex(myTabWidget->indexOf(myLineEdit->parentWidget()));