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List:       kde-devel
Subject:    Re: Extend AutoCompletion to provide mid-string matches also?
From:       Thomas Baumgart <ipwizard () users ! sourceforge ! net>
Date:       2006-11-29 18:51:22
Message-ID: 200611291951.22373 () net-bembel ! de
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Hi all,

on Wednesday 29 November 2006 19:32, Carsten Pfeiffer wrote:

> On Monday 27 November 2006 17:52, Achim Spangler wrote:
>
> Hi,
>
> > the normal KComboBox - AutoCompletion does only deliver matches where
> > the entered text matches to the beginning of an entry.
> > e.g.
> > entered text: "F" - proposed completion: "Foo"
> >
> > I'd like to get a completion as follows:
> > entered text: "oo" - proposed completion: "Foo"
>
> yes, that's what you get when you press Ctrl-T (unless another shortcut
> overrides this). The shortcut is configurable in kcontrol, if necessary.

In KMyMoney we emulate a Ctrl-T with every character typed by the user by 
overriding keyPressEvent in the following manner:

void kMyMoneyPayee::keyPressEvent( QKeyEvent * ev)
{
  KLineEdit::keyPressEvent(ev);
  if(ev->isAccepted()) {
    // if the key was accepted by KLineEdit, we fake a substring completion
    // which we set previously to Ctrl+T.
    QKeyEvent evc(QEvent::KeyPress, Qt::Key_T, 0, Qt::ControlButton);
    KLineEdit::keyPressEvent(&evc);
  }
}

As mentioned here in the comment, we set the shortcut to ctrl-t no matter 
what in the constructor of the widget with

  // set the standard value for substring completion, as we
  // fake that with every key entered. see also
  // code in keyPressEvent()
  setKeyBinding(SubstringCompletion, KShortcut("Ctrl+T"));


Hope that helps even though this is based on a KLineEdit widget. Should 
work the same for a KComboBox. Just replace the KComboBox lineedit widget 
with

  combobox->setLineEdit(new yourOwnLineEditWidget(this), "combo edit"));

-- 

Regards

Thomas Baumgart

thb@net-bembel.de               Check the KMyMoney open source
http://www.net-bembel.de/       project at http://kmymoney2.sf.net/

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