/// <summary>
/// For internal use only.
/// </summary>
/// <param name="factory"></param>
/// <param name="receiver"></param>
/// <param name="setter"></param>
/// <param name="existingValue"></param>
/// <returns></returns>
public static EventCallback <UIChangeEventArgs> CreateBinder(
this EventCallbackFactory factory,
object receiver,
Action <string> setter,
string existingValue)
{
;
return(CreateBinderCore <string>(factory, receiver, setter, ConvertToString));
}
public static EventCallback <ChangeEventArgs> CreateBinder <[DynamicallyAccessedMembers(DynamicallyAccessedMemberTypes.All)] T>(
this EventCallbackFactory factory,
object receiver,
Action <T> setter,
T existingValue,
CultureInfo?culture = null)
{
return(CreateBinderCore <T>(factory, receiver, setter, culture, ParserDelegateCache.Get <T>()));
}
public static EventCallback <ChangeEventArgs> CreateBinder(
this EventCallbackFactory factory,
object receiver,
Action <bool> setter,
bool existingValue,
CultureInfo?culture = null)
{
return(CreateBinderCore <bool>(factory, receiver, setter, culture, ConvertToBool));
}
/// <summary>
/// Creates an <see cref="EventCallback"/> for the provided <paramref name="receiver"/> and
/// <paramref name="callback"/>.
/// </summary>
/// <param name="factory">The <see cref="EventCallbackFactory"/>.</param>
/// <param name="receiver">The event receiver.</param>
/// <param name="callback">The event callback.</param>
/// <returns>The <see cref="EventCallback"/>.</returns>
public static EventCallback <ChangeEventArgs> Create(this EventCallbackFactory factory, object receiver, Func <ChangeEventArgs, Task> callback)
{
if (factory == null)
{
throw new ArgumentNullException(nameof(factory));
}
return(factory.Create <ChangeEventArgs>(receiver, callback));
}
/// <summary>
/// For internal use only.
/// </summary>
/// <param name="factory"></param>
/// <param name="receiver"></param>
/// <param name="setter"></param>
/// <param name="existingValue"></param>
/// <param name="culture"></param>
/// <returns></returns>
public static EventCallback <UIChangeEventArgs> CreateBinder(
this EventCallbackFactory factory,
object receiver,
Action <DateTimeOffset?> setter,
DateTimeOffset?existingValue,
CultureInfo culture = null)
{
return(CreateBinderCore <DateTimeOffset?>(factory, receiver, setter, culture, format: null, ConvertToNullableDateTimeOffsetWithFormat));
}
public static EventCallback <ChangeEventArgs> CreateBinder(
this EventCallbackFactory factory,
object receiver,
Action <double> setter,
double existingValue,
CultureInfo?culture = null)
{
return(CreateBinderCore <double>(factory, receiver, setter, culture, ConvertToDoubleDelegate));
}
public static EventCallback <ChangeEventArgs> CreateBinder(
this EventCallbackFactory factory,
object receiver,
Action <DateTimeOffset> setter,
DateTimeOffset existingValue,
CultureInfo?culture = null)
{
return(CreateBinderCore <DateTimeOffset>(factory, receiver, setter, culture, ConvertToDateTimeOffset));
}
public static EventCallback <ChangeEventArgs> CreateBinder(
this EventCallbackFactory factory,
object receiver,
Action <short?> setter,
short?existingValue,
CultureInfo?culture = null)
{
return(CreateBinderCore <short?>(factory, receiver, setter, culture, ConvertToNullableShort));
}
/// <summary>
/// For internal use only.
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="factory"></param>
/// <param name="receiver"></param>
/// <param name="setter"></param>
/// <param name="existingValue"></param>
/// <param name="culture"></param>
/// <returns></returns>
public static EventCallback <UIChangeEventArgs> CreateBinder <T>(
this EventCallbackFactory factory,
object receiver,
Action <T> setter,
T existingValue,
CultureInfo culture = null)
{
return(CreateBinderCore <T>(factory, receiver, setter, culture, BinderConverterCache.Get <T>()));
}
/// <summary>
/// Creates an <see cref="EventCallback"/> for the provided <paramref name="receiver"/> and
/// <paramref name="callback"/>.
/// </summary>
/// <param name="factory">The <see cref="EventCallbackFactory"/>.</param>
/// <param name="receiver">The event receiver.</param>
/// <param name="callback">The event callback.</param>
/// <returns>The <see cref="EventCallback"/>.</returns>
public static EventCallback <UIErrorEventArgs> Create(this EventCallbackFactory factory, object receiver, Action <UIErrorEventArgs> callback)
{
if (factory == null)
{
throw new ArgumentNullException(nameof(factory));
}
return(factory.Create <UIErrorEventArgs>(receiver, callback));
}
/// <summary>
/// For internal use only.
/// </summary>
/// <param name="factory"></param>
/// <param name="receiver"></param>
/// <param name="setter"></param>
/// <param name="existingValue"></param>
/// <param name="culture"></param>
/// <returns></returns>
public static EventCallback <UIChangeEventArgs> CreateBinder(
this EventCallbackFactory factory,
object receiver,
Action <float> setter,
float existingValue,
CultureInfo culture = null)
{
return(CreateBinderCore <float>(factory, receiver, setter, culture, ConvertToFloat));
}
/// <summary>
/// For internal use only.
/// </summary>
/// <param name="factory"></param>
/// <param name="receiver"></param>
/// <param name="setter"></param>
/// <param name="existingValue"></param>
/// <param name="culture"></param>
/// <returns></returns>
public static EventCallback <UIChangeEventArgs> CreateBinder(
this EventCallbackFactory factory,
object receiver,
Action <decimal?> setter,
decimal?existingValue,
CultureInfo culture = null)
{
return(CreateBinderCore <decimal?>(factory, receiver, setter, culture, ConvertToNullableDecimal));
}
public static EventCallback <ChangeEventArgs> CreateBinder(
this EventCallbackFactory factory,
object receiver,
Action <TimeOnly?> setter,
TimeOnly?existingValue,
string format,
CultureInfo?culture = null)
{
return(CreateBinderCore <TimeOnly?>(factory, receiver, setter, culture, format, ConvertToNullableTimeOnlyWithFormat));
}
/// <summary>
/// For internal use only.
/// </summary>
/// <param name="factory"></param>
/// <param name="receiver"></param>
/// <param name="setter"></param>
/// <param name="existingValue"></param>
/// <param name="format"></param>
/// <param name="culture"></param>
/// <returns></returns>
public static EventCallback <UIChangeEventArgs> CreateBinder(
this EventCallbackFactory factory,
object receiver,
Action <DateTime> setter,
DateTime existingValue,
string format,
CultureInfo culture = null)
{
return(CreateBinderCore <DateTime>(factory, receiver, setter, culture, format, ConvertToDateTimeWithFormat));
}
/// <summary>
/// For internal use only.
/// </summary>
/// <param name="factory"></param>
/// <param name="receiver"></param>
/// <param name="setter"></param>
/// <param name="existingValue"></param>
/// <returns></returns>
public static EventCallback <UIChangeEventArgs> CreateBinder(
this EventCallbackFactory factory,
object receiver,
Action <DateTime> setter,
DateTime existingValue)
{
// Avoiding CreateBinderCore so we can avoid an extra allocating lambda
// when a format is used.
Action <UIChangeEventArgs> callback = (e) =>
{
setter(ConvertDateTime(e.Value, format: null));
};
return(factory.Create <UIChangeEventArgs>(receiver, callback));
}
/// <summary>
/// For internal use only.
/// </summary>
/// <param name="factory"></param>
/// <param name="receiver"></param>
/// <param name="setter"></param>
/// <param name="existingValue"></param>
/// <returns></returns>
public static EventCallback <UIChangeEventArgs> CreateBinder(
this EventCallbackFactory factory,
object receiver,
Action <decimal?> setter,
decimal?existingValue)
{
Func <object, decimal?> converter = (obj) =>
{
if (decimal.TryParse((string)obj, out var value))
{
return(value);
}
return(null);
};
return(CreateBinderCore <decimal?>(factory, receiver, setter, ConvertToNullableDecimal));
}
private static EventCallback <UIChangeEventArgs> CreateBinderCore <T>(
this EventCallbackFactory factory,
object receiver,
Action <T> setter,
CultureInfo culture,
BindConverter <T> converter)
{
Action <UIChangeEventArgs> callback = e =>
{
T value = default;
var converted = false;
try
{
converted = converter(e.Value, culture, out value);
}
catch
{
}
// We only invoke the setter if the conversion didn't throw, or if the newly-entered value is empty.
// If the user entered some non-empty value we couldn't parse, we leave the state of the .NET field
// unchanged, which for a two-way binding results in the UI reverting to its previous valid state
// because the diff will see the current .NET output no longer matches the render tree since we
// patched it to reflect the state of the UI.
//
// This reversion behavior is valuable because alternatives are problematic:
// - If we assigned default(T) on failure, the user would lose whatever data they were editing,
// for example if they accidentally pressed an alphabetical key while editing a number with
// @bind:event="oninput"
// - If the diff mechanism didn't revert to the previous good value, the user wouldn't necessarily
// know that the data they are submitting is different from what they think they've typed
if (converted)
{
setter(value);
}
else if (string.Empty.Equals(e.Value))
{
setter(default);
public static EventCallback <UIChangeEventArgs> CreateBinder(
this EventCallbackFactory factory,
object receiver,
Action <string> setter,
string existingValue) => default;
public static EventCallback <UIWheelEventArgs> Create(this EventCallbackFactory factory, object receiver, Func <UIWheelEventArgs, Task> callback) => default;
public static EventCallback <UITouchEventArgs> Create(this EventCallbackFactory factory, object receiver, Action <UITouchEventArgs> callback) => default;
public static EventCallback <UIChangeEventArgs> CreateBinder(
this EventCallbackFactory factory,
object receiver,
Action <DateTime> setter,
DateTime existingValue,
string format) => default;
public static EventCallback <UIChangeEventArgs> CreateBinder <T>(
this EventCallbackFactory factory,
object receiver,
Action <T> setter,
T existingValue) where T : Enum => default;
