private static ComboBoxViewModel CreateComboBox(ViewTestParameter parameter)
{
// Setup initial conditions.
var viewModel = new ComboBoxViewModel
{
ToolTip = string.Format("Parameter: {0}", parameter.Info.Name)
};
// Populate with values.
if (parameter.Type.IsEnum)
{
PopulateEnumDropdown(viewModel, parameter);
}
else if (parameter.Type.IsA(typeof(bool)))
{
PopulateBooleanDropdown(viewModel, parameter);
}
// Wire up events.
Action syncParameterValue = () => { parameter.Value = viewModel.SelectedItemValue; };
viewModel.SelectionChanged += delegate { syncParameterValue(); };
// Finish up.
syncParameterValue();
return viewModel;
}
private static void PopulateEnumDropdown(ComboBoxViewModel viewModel, ViewTestParameter parameter)
{
foreach (var value in parameter.Type.GetEnumValues())
{
viewModel.Add(value.ToString(), value);
}
SelectDefaultValue(viewModel, parameter.Info.DefaultValue);
}
private static void PopulateBooleanDropdown(ComboBoxViewModel viewModel, ViewTestParameter parameter)
{
var name = parameter.Info.Name;
viewModel.Add(string.Format("{0}: True", name), true);
viewModel.Add(string.Format("{0}: False", name), false);
var defaultValue = parameter.Info.DefaultValue;
SelectDefaultValue(
viewModel,
defaultValue is DBNull ? false : defaultValue);
}
private static void SelectDefaultValue(ComboBoxViewModel viewModel, object defaultValue)
{
var hasDefault = viewModel.Items.Count(m => Equals(m.Value, defaultValue)) > 0;
if (hasDefault)
{
viewModel.SelectValue(defaultValue);
}
else
{
viewModel.SelectFirst();
}
}
public void Initialize(CoreComboBox control)
{
// Setup initial conditions.
control.Width = 300;
control.Padding = new Thickness(20, 5, 20, 5);
// Setup view-model.
viewModel = new ComboBoxViewModel();
control.ViewModel = viewModel;
// Wire up events.
viewModel.SelectionChanged += delegate { Debug.WriteLine("!! SelectionChanged: " + viewModel.SelectedItem); };
// Finish up.
Build_Items_Collection(control);
}
