ComboBox in Modal Dialog

Wed, 05 Dec 2012 08:00:53 -0800 

hi,

I want to have a Combo box in a modal dialog.
here is what I am doing :

this._combo = new PopupMenu.PopupComboBoxMenuItem({ style_class:
'status-chooser-combo' });
        this._combo.addMenuItem(new PopupMenu.PopupMenuItem("ABCD"));
        this._combo.addMenuItem(new PopupMenu.PopupMenuItem("EFGH"));
        this._combo.addMenuItem(new PopupMenu.PopupMenuItem("IJKL"));

        let act = 2;
        this._combo.setActiveItem(act);


        this._combo.setItemVisible(0, true);
        this._combo.setItemVisible(1, true);
        this._combo.setItemVisible(2, true);

        this.contentLayout.add(this._combo.actor);

I can see the ComboBox but it does not expand. If I set the ActiveItem to
some other Item , the changes reflect in the ComboBox but it does not
expand.

Is there something i am missing?
I am on gnome-shell ver 3.4.2.

Thanks,
Alok.

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