public ConfigurationComboBox()
{
align = new Gtk.Alignment(0.5f, 0.5f, 1.0f, 0f);
Add(align);
align.LeftPadding = 3;
align.RightPadding = 3;
combo = new DropDownBox();
combo.AddItemSet(configs);
combo.AddItemSet(runtimes);
align.Add(combo);
ShowAll();
Combo.Changed += OnChanged;
IdeApp.Workspace.ConfigurationsChanged += OnConfigurationsChanged;
IdeApp.Workspace.RuntimesChanged += OnConfigurationsChanged;
IdeApp.Workspace.ActiveRuntimeChanged += OnActiveRuntimeChanged;
IdeApp.Workspace.ActiveConfigurationChanged += OnActiveConfigurationChanged;
Reset();
}