private static void OnSelectedColorChanged(DependencyObject obj, DependencyPropertyChangedEventArgs args)
{
ComboColorPicker cp = obj as ComboColorPicker;
Debug.Assert(cp != null);
Color newColor = (Color)args.NewValue;
Color oldColor = (Color)args.OldValue;
if (newColor == oldColor)
{
return;
}
// When the SelectedColor changes, set the selected value of the combo box
ColorViewModel selectedColorViewModel = cp.ColorList1.SelectedValue as ColorViewModel;
if (selectedColorViewModel == null || selectedColorViewModel.Color != newColor)
{
// Add the color if not found
if (!cp.ListContains(newColor))
{
cp.AddColor(newColor, newColor.ToString());
}
}
// Also update the brush
cp.SelectedBrush = new SolidColorBrush(newColor);
cp.OnColorChanged(oldColor, newColor);
}
private void AddColor(Color color, string name)
{
if (!name.StartsWith("#", StringComparison.Ordinal))
{
name = NiceName(name);
}
var cvm = new ColorViewModel {
Color = color, Name = name
};
ColorList1.Items.Add(cvm);
}
private bool ListContains(Color newColor)
{
foreach (object o in ColorList1.Items)
{
ColorViewModel vcm = o as ColorViewModel;
if (vcm == null)
{
continue;
}
if (vcm.Color == newColor)
{
return(true);
}
}
return(false);
}
private void AddColor(Color color, string name)
{
if (!name.StartsWith("#",StringComparison.Ordinal))
name = NiceName(name);
ColorViewModel cvm = new ColorViewModel() { Color = color, Name = name };
ColorList1.Items.Add(cvm);
}