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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
// Description: Specifies that the whitespace surrounding an element should be trimmed.
using System;
using System.Reflection;
using System.ComponentModel;
using System.Globalization;
using System.Diagnostics;
#if SYSTEM_XAML
using System.Xaml.Replacements;
#else
#nullable disable
#pragma warning disable CS8632
#endif
#if PBTCOMPILER
namespace MS.Internal.Markup
#elif SYSTEM_XAML
namespace System.Xaml
#else
namespace System.Windows.Markup
#endif
{
/// <summary>
/// Class that provides functionality to obtain a TypeConverter from a property or the
/// type of the property, based on logic similar to TypeDescriptor.GetConverter.
/// </summary>
internal static class TypeConverterHelper
{
private static CultureInfo invariantEnglishUS = CultureInfo.InvariantCulture;
internal static CultureInfo InvariantEnglishUS
{
get
{
return invariantEnglishUS;
}
}
#if !SYSTEM_XAML
internal static MemberInfo GetMemberInfoForPropertyConverter(object dpOrPiOrMi)
{
MemberInfo memberInfo = dpOrPiOrMi as PropertyInfo;
if (memberInfo == null)
{
MethodInfo methodInfo;
#if !PBTCOMPILER
DependencyProperty dp = dpOrPiOrMi as DependencyProperty;
if (dp != null)
{
// While parsing styles or templates, we end up getting a DependencyProperty,
// even for non-attached cases. In this case, we try fetching the CLR
// property info and getting its attributes.
memberInfo = dp.OwnerType.GetProperty(
dp.Name,
BindingFlags.Instance | BindingFlags.Public |
BindingFlags.NonPublic | BindingFlags.FlattenHierarchy);
// We failed to get a CLR wrapper for the DependencyProperty, so we
// assume that this is an attached property and look for the MethodInfo
// for the static getter.
if (memberInfo == null)
{
// Get the method member that defines the DependencyProperty
memberInfo = dp.OwnerType.GetMethod(
"Get" + dp.Name,
BindingFlags.Public | BindingFlags.NonPublic |
BindingFlags.Static | BindingFlags.FlattenHierarchy);
}
}
else
#endif
if ((methodInfo = dpOrPiOrMi as MethodInfo) != null)
{
// miSetter may not be a MethodInfo when we are dealing with event handlers that
// belong to local assemblies. One such case is encountered when building DrtCompiler.
if (methodInfo.GetParameters().Length == 1)
{
// Use Getter of the attached property
memberInfo = methodInfo;
}
else
{
// Use the Setter of the attached property (if any)
memberInfo = methodInfo.DeclaringType.GetMethod(
$"Get{methodInfo.Name.Substring("Set".Length)}",
BindingFlags.Public | BindingFlags.NonPublic |
BindingFlags.Static | BindingFlags.FlattenHierarchy);
}
}
}
return memberInfo;
}
internal static Type GetConverterType(MemberInfo memberInfo)
{
Debug.Assert(null != memberInfo, "Null passed for memberInfo to GetConverterType");
Type converterType = null;
// Try looking for the TypeConverter for the type using reflection.
string converterName = ReflectionHelper.GetTypeConverterAttributeData(memberInfo, out converterType);
if (converterType == null)
{
converterType = GetConverterTypeFromName(converterName);
}
return converterType;
}
#endif
internal static Type? GetConverterType(Type type)
{
Debug.Assert(null != type, "Null passed for type to GetConverterType");
// Try looking for the TypeConverter for the type using reflection.
string? converterName = ReflectionHelper.GetTypeConverterAttributeData(type, out Type? converterType);
converterType ??= GetConverterTypeFromName(converterName);
return converterType;
}
private static Type? GetConverterTypeFromName(string? converterName)
{
Type? converterType = null;
if (!string.IsNullOrEmpty(converterName))
{
converterType = ReflectionHelper.GetQualifiedType(converterName);
if (converterType != null)
{
// Validate that this is an accessible type converter.
if (!ReflectionHelper.IsPublicType(converterType))
{
#if PBTCOMPILER
if (!ReflectionHelper.IsInternalType(converterType) ||
!ReflectionHelper.IsInternalAllowedOnType(converterType))
{
#endif
converterType = null;
#if PBTCOMPILER
}
#endif
}
}
}
return converterType;
}
#if !SYSTEM_XAML
internal static Type GetCoreConverterTypeFromCustomType(Type type)
{
Type converterType = null;
if (type.IsEnum)
{
// Need to handle Enums types specially as they require a ctor that
// takes the underlying type, but at compile time we only need to know
// the Type of the Converter and not an actual instance of it.
converterType = typeof(EnumConverter);
}
else if (typeof(Int32).IsAssignableFrom(type))
{
converterType = typeof(Int32Converter);
}
else if (typeof(Int16).IsAssignableFrom(type))
{
converterType = typeof(Int16Converter);
}
else if (typeof(Int64).IsAssignableFrom(type))
{
converterType = typeof(Int64Converter);
}
else if (typeof(UInt32).IsAssignableFrom(type))
{
converterType = typeof(UInt32Converter);
}
else if (typeof(UInt16).IsAssignableFrom(type))
{
converterType = typeof(UInt16Converter);
}
else if (typeof(UInt64).IsAssignableFrom(type))
{
converterType = typeof(UInt64Converter);
}
else if (typeof(Boolean).IsAssignableFrom(type))
{
converterType = typeof(BooleanConverter);
}
else if (typeof(Double).IsAssignableFrom(type))
{
converterType = typeof(DoubleConverter);
}
else if (typeof(Single).IsAssignableFrom(type))
{
converterType = typeof(SingleConverter);
}
else if (typeof(Byte).IsAssignableFrom(type))
{
converterType = typeof(ByteConverter);
}
else if (typeof(SByte).IsAssignableFrom(type))
{
converterType = typeof(SByteConverter);
}
else if (typeof(Char).IsAssignableFrom(type))
{
converterType = typeof(CharConverter);
}
else if (typeof(Decimal).IsAssignableFrom(type))
{
converterType = typeof(DecimalConverter);
}
else if (typeof(TimeSpan).IsAssignableFrom(type))
{
converterType = typeof(TimeSpanConverter);
}
else if (typeof(Guid).IsAssignableFrom(type))
{
converterType = typeof(GuidConverter);
}
else if (typeof(String).IsAssignableFrom(type))
{
converterType = typeof(StringConverter);
}
else if (typeof(CultureInfo).IsAssignableFrom(type))
{
converterType = typeof(CultureInfoConverter);
}
else if (typeof(Type).IsAssignableFrom(type))
{
converterType = typeof(TypeTypeConverter);
}
else if (typeof(DateTime).IsAssignableFrom(type))
{
converterType = typeof(DateTimeConverter2);
}
return converterType;
}
#endif
#if !PBTCOMPILER
private static TypeConverter? GetCoreConverterFromCoreType(Type type)
{
TypeConverter? typeConverter = null;
if (type == typeof(int))
{
typeConverter = new System.ComponentModel.Int32Converter();
}
else if (type == typeof(short))
{
typeConverter = new System.ComponentModel.Int16Converter();
}
else if (type == typeof(long))
{
typeConverter = new System.ComponentModel.Int64Converter();
}
else if (type == typeof(uint))
{
typeConverter = new System.ComponentModel.UInt32Converter();
}
else if (type == typeof(ushort))
{
typeConverter = new System.ComponentModel.UInt16Converter();
}
else if (type == typeof(ulong))
{
typeConverter = new System.ComponentModel.UInt64Converter();
}
else if (type == typeof(bool))
{
typeConverter = new System.ComponentModel.BooleanConverter();
}
else if (type == typeof(double))
{
typeConverter = new System.ComponentModel.DoubleConverter();
}
else if (type == typeof(float))
{
typeConverter = new System.ComponentModel.SingleConverter();
}
else if (type == typeof(byte))
{
typeConverter = new System.ComponentModel.ByteConverter();
}
else if (type == typeof(sbyte))
{
typeConverter = new System.ComponentModel.SByteConverter();
}
else if (type == typeof(char))
{
typeConverter = new System.ComponentModel.CharConverter();
}
else if (type == typeof(decimal))
{
typeConverter = new System.ComponentModel.DecimalConverter();
}
else if (type == typeof(TimeSpan))
{
typeConverter = new System.ComponentModel.TimeSpanConverter();
}
else if (type == typeof(Guid))
{
typeConverter = new System.ComponentModel.GuidConverter();
}
else if (type == typeof(string))
{
typeConverter = new System.ComponentModel.StringConverter();
}
else if (type == typeof(CultureInfo))
{
typeConverter = new System.ComponentModel.CultureInfoConverter();
}
#if !SYSTEM_XAML
else if (type == typeof(Type))
{
typeConverter = new System.Windows.Markup.TypeTypeConverter();
}
#else
else if (type == typeof(Type))
{
typeConverter = new System.Xaml.Replacements.TypeTypeConverter();
}
#endif
else if (type == typeof(DateTime))
{
typeConverter = new DateTimeConverter2();
}
else if (ReflectionHelper.IsNullableType(type))
{
typeConverter = new System.ComponentModel.NullableConverter(type);
}
return typeConverter;
}
internal static TypeConverter? GetCoreConverterFromCustomType(Type type)
{
TypeConverter? typeConverter = null;
if (type.IsEnum)
{
// Need to handle Enums types specially as they require a ctor that
// takes the underlying type.
typeConverter = new System.ComponentModel.EnumConverter(type);
}
else if (typeof(int).IsAssignableFrom(type))
{
typeConverter = new System.ComponentModel.Int32Converter();
}
else if (typeof(short).IsAssignableFrom(type))
{
typeConverter = new System.ComponentModel.Int16Converter();
}
else if (typeof(long).IsAssignableFrom(type))
{
typeConverter = new System.ComponentModel.Int64Converter();
}
else if (typeof(uint).IsAssignableFrom(type))
{
typeConverter = new System.ComponentModel.UInt32Converter();
}
else if (typeof(ushort).IsAssignableFrom(type))
{
typeConverter = new System.ComponentModel.UInt16Converter();
}
else if (typeof(ulong).IsAssignableFrom(type))
{
typeConverter = new System.ComponentModel.UInt64Converter();
}
else if (typeof(bool).IsAssignableFrom(type))
{
typeConverter = new System.ComponentModel.BooleanConverter();
}
else if (typeof(double).IsAssignableFrom(type))
{
typeConverter = new System.ComponentModel.DoubleConverter();
}
else if (typeof(float).IsAssignableFrom(type))
{
typeConverter = new System.ComponentModel.SingleConverter();
}
else if (typeof(byte).IsAssignableFrom(type))
{
typeConverter = new System.ComponentModel.ByteConverter();
}
else if (typeof(sbyte).IsAssignableFrom(type))
{
typeConverter = new System.ComponentModel.SByteConverter();
}
else if (typeof(char).IsAssignableFrom(type))
{
typeConverter = new System.ComponentModel.CharConverter();
}
else if (typeof(decimal).IsAssignableFrom(type))
{
typeConverter = new System.ComponentModel.DecimalConverter();
}
else if (typeof(TimeSpan).IsAssignableFrom(type))
{
typeConverter = new System.ComponentModel.TimeSpanConverter();
}
else if (typeof(Guid).IsAssignableFrom(type))
{
typeConverter = new System.ComponentModel.GuidConverter();
}
else if (typeof(string).IsAssignableFrom(type))
{
typeConverter = new System.ComponentModel.StringConverter();
}
else if (typeof(CultureInfo).IsAssignableFrom(type))
{
typeConverter = new System.ComponentModel.CultureInfoConverter();
}
#if !SYSTEM_XAML
else if (typeof(Type).IsAssignableFrom(type))
{
typeConverter = new System.Windows.Markup.TypeTypeConverter();
}
#else
else if (type == typeof(Type))
{
typeConverter = new System.Xaml.Replacements.TypeTypeConverter();
}
#endif
else if (typeof(DateTime).IsAssignableFrom(type))
{
typeConverter = new DateTimeConverter2();
}
else if (typeof(Uri).IsAssignableFrom(type))
{
typeConverter = new System.Xaml.Replacements.TypeUriConverter();
}
return typeConverter;
}
/// <summary>
/// Returns a TypeConverter for the given target Type, otherwise null if not found.
/// First, if the type is one of the known system types, it lookups a table to determine the TypeConverter.
/// Next, it tries to find a TypeConverterAttribute on the type using reflection.
/// Finally, it looks up the table of known typeConverters again if the given type derives from one of the
/// known system types.
/// </summary>
/// <param name="type">The target Type for which to find a TypeConverter.</param>
/// <returns>A TypeConverter for the Type type if found. Null otherwise.</returns>
internal static TypeConverter GetTypeConverter(Type type)
{
ArgumentNullException.ThrowIfNull(type);
TypeConverter? typeConverter = GetCoreConverterFromCoreType(type);
if (typeConverter == null)
{
Type? converterType = GetConverterType(type);
if (converterType != null)
{
typeConverter = Activator.CreateInstance(converterType,
BindingFlags.Instance | BindingFlags.CreateInstance | BindingFlags.Public,
null,
null,
InvariantEnglishUS) as TypeConverter;
}
else
{
typeConverter = GetCoreConverterFromCustomType(type);
}
typeConverter ??= new TypeConverter();
}
return typeConverter;
}
#endif
}
}
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