Hi Yuri, did you try the "changeOpen" event which is fired upon change of the open property?
http://demo.qooxdoo.org/current/apiviewer/#qx.ui.tree.core.AbstractItem~open The getData method of the changeOpen event should be true if open changes to true. Regards Dietrich Am 08.02.2016 um 23:19 schrieb yuri: > I am using Tree widget in qx.Desktop application and want to populate it on > demand. Let say there is a TreeFolder in the Tree widget which is not opened > yet, so tchnicaly it is empty. Once user open it (click on +) I want to > populate the TreeFolder with items on that click and show expended content. > Unfortunately, I was not able to find suitable event fired by Tree widget to > use. > Could anybody shed a light how it can be achived? > Thanks > > > > > -- > View this message in context: > http://qooxdoo.678.n2.nabble.com/How-to-add-a-listener-to-Tree-widget-on-open-item-event-tp7587978.html > Sent from the qooxdoo mailing list archive at Nabble.com. > > ------------------------------------------------------------------------------ > Site24x7 APM Insight: Get Deep Visibility into Application Performance > APM + Mobile APM + RUM: Monitor 3 App instances at just $35/Month > Monitor end-to-end web transactions and take corrective actions now > Troubleshoot faster and improve end-user experience. Signup Now! > http://pubads.g.doubleclick.net/gampad/clk?id=272487151&iu=/4140 > _______________________________________________ > qooxdoo-devel mailing list > qooxdoo-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/qooxdoo-devel ------------------------------------------------------------------------------ Site24x7 APM Insight: Get Deep Visibility into Application Performance APM + Mobile APM + RUM: Monitor 3 App instances at just $35/Month Monitor end-to-end web transactions and take corrective actions now Troubleshoot faster and improve end-user experience. Signup Now! http://pubads.g.doubleclick.net/gampad/clk?id=272487151&iu=/4140 _______________________________________________ qooxdoo-devel mailing list qooxdoo-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/qooxdoo-devel
