public override Margins Create(IParameterDescriptor parameter, IReadonlyContext context) => new Margins(
RelativeProperty.GetOrDefault(parameter.Metadata, Relative.Get(context)),
Edges[0].Get(context), Edges[1].Get(context), Edges[2].Get(context), Edges[3].Get(context));
public PresentedParameter Present(IParameterDescriptor param, Action updateCallback)
{
var container = new Grid();
var checkFileExistence = CheckFileExistenceProperty.Get(param.Metadata);
var textBox = new TextBox {
MaxLength = 256
};
textBox.TextChanged += (sender, args) => updateCallback();
container.Children.Add(textBox);
var supportedSchemes = new HashSet <string>((SupportedSchemesProperty.GetOrDefault(param.Metadata) ?? EmptyArray <string> .Instance).Select(scheme => scheme.ToLowerInvariant()));
Button button = null;
if ((!supportedSchemes.Any() || supportedSchemes.Contains("file")) && ShowFileSelectorProperty.GetOrDefault(param.Metadata))
{
button = new Button {
Content = "...", HorizontalAlignment = HorizontalAlignment.Right, Width = 25
};
textBox.Margin = new Thickness {
Right = ViewConstants.MinorSpacing + button.Width
};
button.Click += (sender, args) =>
{
var dialog = new OpenFileDialog
{
Title = $"Select File: {param.Name}",
Multiselect = false,
CheckFileExists = CheckFileExistenceProperty.Get(param.Metadata),
Filter = FileFilterProperty.Get(param.Metadata),
};
if (!textBox.Text.IsBlank())
{
Uri uri = null;
try
{
uri = new Uri(textBox.Text, UriKind.RelativeOrAbsolute);
}
catch (Exception)
{
/* ignored */
}
if (uri?.IsFile ?? false)
{
var localPath = uri.LocalPath;
dialog.InitialDirectory = new FileInfo(localPath).Directory?.FullName ?? "";
}
}
if ((bool)dialog.ShowDialog(Window.GetWindow(button)))
{
textBox.Text = "file:\\" + dialog.FileName;
}
};
container.Children.Add(button);
}
void Setter(object uri) => textBox.Text = uri?.ToString() ?? "";
object Getter() => new Uri(textBox.Text);
bool Validator(object val)
{
if (val is Uri uri)
{
if (!supportedSchemes.Any() && !supportedSchemes.Contains(uri.Scheme.ToLowerInvariant()))
{
return(false);
}
if (string.Equals(uri.Scheme, "file", StringComparison.OrdinalIgnoreCase) && checkFileExistence && !File.Exists(uri.LocalPath))
{
return(false);
}
}
return(param.IsValid(val));
}
void Updater(ParameterStateType state, bool value)
{
switch (state)
{
case ParameterStateType.Enabled:
textBox.IsEnabled = value;
if (button != null)
{
button.IsEnabled = value;
}
break;
case ParameterStateType.Valid:
textBox.Background = value ? Brushes.Transparent : new SolidColorBrush(ViewConstants.InvalidColor);
break;
}
}
return(new PresentedParameter(param, container, new PresentedParameter.ParamDelegates(Getter, Setter, Validator, Updater)));
}
public override BaselinePreference Create(IParameterDescriptor parameter, IReadonlyContext context) => new BaselinePreference(TwoSidedProperty.GetOrDefault(parameter.Metadata, TwoSided.Get(context)), Duration.Get(context));
