/// <summary>
/// Binds <see cref="IColumns"/> to <see cref="ValidationPlaceholder"/>.
/// </summary>
/// <param name="source">The source <see cref="IColumns"/>.</param>
/// <param name="bindings">The bindings to determine whether the <see cref="ValidationPlaceholder"/> is active.</param>
/// <returns>The row binding object.</returns>
public static RowBinding <ValidationPlaceholder> BindToValidationPlaceholder(this IColumns source, params RowBinding[] bindings)
{
source.VerifyNotNull(nameof(source));
source = source.Seal();
var result = new RowBinding <ValidationPlaceholder>(onSetup: (v, p) =>
{
if (bindings != null && bindings.Length > 0)
{
var containingElements = new UIElement[bindings.Length];
for (int i = 0; i < containingElements.Length; i++)
{
containingElements[i] = bindings[i].GetSettingUpElement();
}
v.Setup(containingElements);
}
}, onRefresh: null, onCleanup: (v, p) =>
{
v.Cleanup();
});
var input = result.BeginInput(new ValueChangedTrigger <ValidationPlaceholder>(source, result));
foreach (var column in source)
{
input.WithFlush(column, (r, v) => true);
}
return(input.EndInput());
}
/// <summary>
/// Ends the input implementation.
/// </summary>
/// <returns>The row binding for fluent coding.</returns>
public RowBinding <T> EndInput()
{
_target = _target.Seal();
return(RowBinding);
}
private RowAsyncValidator(string displayName, IColumns sourceColumns)
: base(displayName)
{
Debug.Assert(sourceColumns != null && sourceColumns.Count > 0);
_sourceColumns = sourceColumns.Seal();
}
