QLineEdit: don't emit editingFinished if nothing was done

When a modal dialog is called from a slot connected to the
editingFinished signal, the chain of events resulting from the focus
returning to this widget will make the editingFinished signal emitted
again. This patch uses a new variable to keep track of the fact that
there was a modification. Once editingFinished was emitted, that flag
is cleared so next time the signal will be emitted again only if a
modification was made to the line edit content.

[ChangeLog][QtWidget][QLineEdit] Behavior change: now the
editingFinished signal is emitted only once after the line edit content
was edited.

Fixes: QTBUG-40
Change-Id: Ia4760bad8717f1758c3939132c446b4b4c6cd498
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io>
Reviewed-by: Shawn Rutledge <shawn.rutledge@qt.io>

0 files changed, 0 insertions, 0 deletions