[maemo-developers] row-activate signal for HildonTouchSelector
From: Piñeiro apinheiro at igalia.comDate: Thu Jan 14 16:54:35 EET 2010
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From: "Neal H. Walfield" <neal at walfield.org> Sorry for the delay. > I want to use the HildonTouchSelector widget to enable the user to > select an item from a list. I want an action to occur when the user > "clicks" on an item. I don't want the user to have to press another > button. > > The HildonTouchSelector widget provides a "changed" signal. This is > emtited when the active item changes. This appears to be due to the > user selecting an item (even the preselected one) or an item (perhaps > the active item?) in the model changing via, e.g., a "row-changed" > signal. GtkTreeModel::row-changed can be a cause of the emission of HildonTouchSelector::changed, but normally the emission of the signal is due GtkTreeView::row-tapped. This signal is emitted each time the user tap on one of the GtkTreeView rows. > I need to distinguish between these two cases. I only want to act if > the user actually "clicked" on an item. That is, I want the behavior > that the media player implements, e.g., in its "select artist" view. > Will someone please suggest how to best achieve this? HildonTouchSelector::changed is more related to GtkTreeSelection::changed that to row-changed. Similarly to GtkTreeSelection::changed [1] this is basically a hint, although we try to be more strict. As far as I know the only "misleading" behaviour is this one, that the signal could be emitted when the although the value selected has no really changed. One option you have is save the previous selection before that, and then compare the value selected with the user with the previous selection. BR [1] http://library.gnome.org/devel/gtk/stable/GtkTreeSelection.html#GtkTreeSelection-changed === API (apinheiro at igalia.com)
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