public static object EnumToObject(PropertyGridProperty property, object value)
{
if (property == null)
{
throw new ArgumentNullException("property");
}
if (value != null && property.PropertyType.IsEnum)
{
return(Extensions.EnumToObject(property.PropertyType, value));
}
if (value != null && value.GetType().IsEnum)
{
return(Extensions.EnumToObject(value.GetType(), value));
}
if (property.PropertyType != typeof(string))
{
return(ConversionService.ChangeType(value, property.PropertyType));
}
var options = PropertyGridOptionsAttribute.FromProperty(property);
if (options == null)
{
return(ConversionService.ChangeType(value, property.PropertyType));
}
return(EnumToObject(options, property.PropertyType, value));
}
/// <summary>
/// Gets the default value for a given property.
/// </summary>
/// <param name="propertyName">The property name. May not be null.</param>
/// <returns>The default value. May be null.</returns>
protected virtual object GetDefaultValue(string propertyName)
{
if (propertyName == null)
{
throw new ArgumentNullException("propertyName");
}
PropertyInfo pi = GetType().GetProperty(propertyName);
if (pi == null)
{
if (ThrowOnInvalidProperty)
{
throw new InvalidOperationException(SR.GetString("invalidPropertyName", GetType().FullName, propertyName));
}
return(null);
}
object defaultValue = pi.PropertyType.IsValueType ? Activator.CreateInstance(pi.PropertyType) : null;
DefaultValueAttribute att = Attribute.GetCustomAttribute(pi, typeof(DefaultValueAttribute), true) as DefaultValueAttribute;
if (att != null)
{
return(ConversionService.ChangeType(att.Value, defaultValue));
}
return(defaultValue);
}
protected virtual T GetProperty <T>([CallerMemberName] string name = null)
{
T defaultValue;
object obj;
if (_defaultValues.TryGetValue(name, out obj))
{
defaultValue = ConversionService.ChangeType <T>(obj);
}
else
{
// runtime methodbase has no custom atts
DefaultValueAttribute att = null;
PropertyInfo pi = GetType().GetProperty(name);
if (pi != null)
{
att = Attribute.GetCustomAttribute(pi, typeof(DefaultValueAttribute), true) as DefaultValueAttribute;
}
defaultValue = att != null?ConversionService.ChangeType(att.Value, default(T)) : default(T);
_defaultValues[name] = defaultValue;
}
return(GetProperty(defaultValue, name));
}
protected virtual void OnGuidCommandExecuted(object sender, ExecutedRoutedEventArgs e)
{
var tb = e.OriginalSource as TextBox;
if (tb != null)
{
if (NewGuidCommand.Equals(e.Command))
{
tb.Text = Guid.NewGuid().ToString(NormalizeGuidParameter(e.Parameter));
return;
}
if (EmptyGuidCommand.Equals(e.Command))
{
tb.Text = Guid.Empty.ToString(NormalizeGuidParameter(e.Parameter));
return;
}
if (IncrementGuidCommand.Equals(e.Command))
{
Guid g = ConversionService.ChangeType(tb.Text.Trim(), Guid.Empty);
byte[] bytes = g.ToByteArray();
bytes[15]++;
tb.Text = new Guid(bytes).ToString(NormalizeGuidParameter(e.Parameter));
return;
}
}
}
protected virtual bool TryChangeType(object value, Type type, IFormatProvider provider, out object changedValue)
{
if (type == null)
{
throw new ArgumentNullException("type");
}
return(ConversionService.TryChangeType(value, type, provider, out changedValue));
}
public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
{
Type parameterType = GetParameterAsType(parameter);
if (parameterType != null)
{
value = ConversionService.ChangeType(value, parameterType, null, culture);
}
object convertedValue = targetType == null ? value : ConversionService.ChangeType(value, targetType, null, culture);
return(convertedValue);
}
/// <summary>
/// Gets a property value.
/// </summary>
/// <typeparam name="T">The property type.</typeparam>
/// <param name="defaultValue">The default value.</param>
/// <param name="name">The property name. May not be null.</param>
/// <returns></returns>
protected virtual T GetProperty <T>(T defaultValue, [CallerMemberName] string name = null)
{
if (name == null)
{
throw new ArgumentNullException("name");
}
object obj;
if (!Properties.TryGetValue(name, out obj))
{
return(defaultValue);
}
return(ConversionService.ChangeType(obj, defaultValue));
}
private string ValueToString(IFormatProvider provider)
{
if (Value == null)
{
return(null);
}
string v = Value as string;
if (v == null)
{
v = ConversionService.ChangeType <string>(Value, null, provider);
if (v == null)
{
v = string.Format(provider, "{0}", Value);
}
}
return(v);
}
public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
{
if (targetType == typeof(string) && !(value is string) && value is IEnumerable)
{
var sb = new StringBuilder();
var enumerable = value as IEnumerable;
if (enumerable != null)
{
foreach (object obj in enumerable)
{
if (sb.Length > 0)
{
sb.Append(Separator);
}
sb.AppendFormat(Format, obj);
}
}
return(sb.ToString());
}
return(ConversionService.ChangeType(value, targetType));
}
/// <summary>
/// Converts a value.
/// </summary>
/// <param name="value">The value produced by the binding source.</param>
/// <param name="targetType">The type of the binding target property.</param>
/// <param name="parameter">The converter parameter to use.</param>
/// <param name="culture">The culture to use in the converter.</param>
/// <returns>
/// A converted value. If the method returns null, the valid null value is used.
/// </returns>
public virtual object Convert(object value, Type targetType, object parameter, CultureInfo culture)
{
if (_cases.Count == 0)
{
return(ConversionService.ChangeType(value, targetType, culture));
}
foreach (UniversalConverterCase c in _cases)
{
if (c.Matches(value, parameter, culture))
{
if ((c.Options & UniversalConverterOptions.ConvertedValueIsConverterParameter) == UniversalConverterOptions.ConvertedValueIsConverterParameter)
{
return(ConversionService.ChangeType(parameter, targetType, culture));
}
return(ConversionService.ChangeType(c.ConvertedValue, targetType, null, culture));
}
}
return(ConversionService.ChangeType(DefaultValue, targetType, null, culture));
}
private string ValueToCompareToString(IFormatProvider provider, bool forceConvert)
{
if (ValueToCompare == null)
{
return(null);
}
string v = ValueToCompare as string;
if (v == null)
{
if (forceConvert || (Options & UniversalConverterOptions.Convert) == UniversalConverterOptions.Convert)
{
v = ConversionService.ChangeType <string>(ValueToCompare, null, provider);
if (v == null)
{
v = string.Format(provider, "{0}", ValueToCompare);
}
}
}
if ((Options & UniversalConverterOptions.Trim) == UniversalConverterOptions.Trim)
{
if (v != null)
{
v = v.Trim();
}
}
if ((Options & UniversalConverterOptions.Nullify) == UniversalConverterOptions.Nullify)
{
if (v != null && v.Length == 0)
{
v = null;
}
}
return(v);
}
/// <summary>
/// Determine if the input values matches, depending on the input operator and options.
/// </summary>
/// <param name="provider">An IFormatProvider interface implementation that supplies culture-specific formatting information.</param>
/// <returns>true if the values matches; false otherwise.</returns>
public virtual bool Matches(IFormatProvider provider)
{
bool ret = false;
string v;
string vtc;
UniversalConverterInput clone;
switch (Operator)
{
case UniversalConverterOperator.Equal:
if (Value == null)
{
if (ValueToCompare == null)
{
ret = true;
break;
}
// use string comparison (to compare "" to null or similar)
v = ValueToCompareToString(provider, false);
ret = v == null;
break; // false
}
if (Value.Equals(ValueToCompare))
{
ret = true;
break;
}
v = Value as string;
if (v != null)
{
vtc = ValueToCompareToString(provider, true);
ret = string.Compare(v, vtc, StringComparison) == 0;
break;
}
if ((Options & UniversalConverterOptions.Convert) == UniversalConverterOptions.Convert)
{
object cvalue;
if (ConversionService.TryChangeType(ValueToCompare, Value.GetType(), provider, out cvalue))
{
if (Value.Equals(cvalue))
{
ret = true;
break;
}
if (Value.GetType() == typeof(string))
{
string sv = (string)cvalue;
if ((Options & UniversalConverterOptions.Trim) == UniversalConverterOptions.Trim)
{
sv = sv.Trim();
}
if ((Options & UniversalConverterOptions.Nullify) == UniversalConverterOptions.Nullify)
{
if (sv.Length == 0)
{
sv = null;
}
}
if (Value.Equals(sv))
{
ret = true;
break;
}
}
}
}
break;
case UniversalConverterOperator.NotEqual:
clone = Clone();
clone.Operator = UniversalConverterOperator.Equal;
ret = clone.Matches(provider);
break;
case UniversalConverterOperator.Contains:
v = ValueToString(provider);
if (v == null)
{
break;
}
vtc = ValueToCompareToString(provider, true);
if (vtc == null)
{
break;
}
ret = v.IndexOf(vtc, StringComparison) >= 0;
break;
case UniversalConverterOperator.StartsWith:
v = ValueToString(provider);
if (v == null)
{
break;
}
vtc = ValueToCompareToString(provider, true);
if (vtc == null)
{
break;
}
ret = v.StartsWith(vtc, StringComparison);
break;
case UniversalConverterOperator.EndsWith:
v = ValueToString(provider);
if (v == null)
{
break;
}
vtc = ValueToCompareToString(provider, true);
if (vtc == null)
{
break;
}
ret = v.EndsWith(vtc, StringComparison);
break;
case UniversalConverterOperator.LesserThanOrEqual:
case UniversalConverterOperator.LesserThan:
case UniversalConverterOperator.GreaterThanOrEqual:
case UniversalConverterOperator.GreaterThan:
var cv = Value as IComparable;
if (cv == null || ValueToCompare == null)
{
break;
}
IComparable cvtc;
if (!Value.GetType().IsAssignableFrom(ValueToCompare.GetType()))
{
cvtc = ConversionService.ChangeType(ValueToCompare, Value.GetType(), provider) as IComparable;
}
else
{
cvtc = ValueToCompare as IComparable;
}
if (cvtc == null)
{
break;
}
int comparison;
v = Value as string;
if (StringComparison != StringComparison.CurrentCulture) // not the default? use the special string comparer
{
vtc = ValueToCompareToString(provider, true);
comparison = string.Compare(v, vtc, StringComparison);
}
else
{
comparison = cv.CompareTo(cvtc);
}
if (comparison == 0)
{
ret = Operator == UniversalConverterOperator.GreaterThanOrEqual || Operator == UniversalConverterOperator.LesserThanOrEqual;
break;
}
if (comparison < 0)
{
ret = Operator == UniversalConverterOperator.LesserThan || Operator == UniversalConverterOperator.LesserThanOrEqual;
break;
}
ret = Operator == UniversalConverterOperator.GreaterThan || Operator == UniversalConverterOperator.GreaterThanOrEqual;
break;
case UniversalConverterOperator.Between:
clone = Clone();
clone.ValueToCompare = MinimumValue;
clone.Operator = UniversalConverterOperator.GreaterThanOrEqual;
if (!clone.Matches(provider))
{
break;
}
clone = Clone();
clone.ValueToCompare = MaximumValue;
clone.Operator = UniversalConverterOperator.LesserThan;
ret = clone.Matches(provider);
break;
case UniversalConverterOperator.IsType:
case UniversalConverterOperator.IsOfType:
Type tvtc = ValueToCompareToType(provider);
if (tvtc == null)
{
break;
}
if (Value == null)
{
if (tvtc.IsValueType)
{
break;
}
ret = (Options & UniversalConverterOptions.NullMatchesType) == UniversalConverterOptions.NullMatchesType;
break;
}
if (Operator == UniversalConverterOperator.IsType)
{
ret = Value.GetType() == tvtc;
}
else
{
ret = tvtc.IsAssignableFrom(Value.GetType());
}
break;
}
return(Reverse ? !ret : ret);
}
/// <summary>
/// Converts a value.
/// </summary>
/// <param name="value">The value that is produced by the binding target.</param>
/// <param name="targetType">The type to convert to.</param>
/// <param name="parameter">The converter parameter to use.</param>
/// <param name="culture">The culture to use in the converter.</param>
/// <returns>
/// A converted value. If the method returns null, the valid null value is used.
/// </returns>
public virtual object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
{
return(ConversionService.ChangeType(parameter, targetType, null, culture));
}
public virtual IEnumerable BuildItems(PropertyGridProperty property, Type targetType, object parameter, CultureInfo culture)
{
if (property == null)
{
throw new ArgumentNullException("property");
}
Type enumType;
bool nullable;
bool isEnumOrNullableEnum = PropertyGridProperty.IsEnumOrNullableEnum(property.PropertyType, out enumType, out nullable);
PropertyGridItem zero = null;
var att = PropertyGridOptionsAttribute.FromProperty(property);
var items = new ObservableCollection <PropertyGridItem>();
if (isEnumOrNullableEnum)
{
if (nullable)
{
PropertyGridItem item = CreateItem();
item.Property = property;
item.Name = null; // "<unset>";
item.Value = null;
item.IsUnset = true;
items.Add(item);
}
string[] names = Enum.GetNames(enumType);
Array values = Enum.GetValues(enumType);
if (Extensions.IsFlagsEnum(enumType))
{
ulong uvalue = EnumToUInt64(property, property.Value);
for (int i = 0; i < names.Length; i++)
{
string name = names[i];
ulong nameValue = EnumToUInt64(property, values.GetValue(i));
string displayName;
if (!ShowEnumField(property, enumType, names[i], out displayName))
{
continue;
}
PropertyGridItem item = CreateItem();
item.Property = property;
item.Name = displayName;
item.Value = nameValue;
item.IsZero = nameValue == 0;
bool isChecked = true;
if (nameValue == 0)
{
zero = item;
}
// determine if this name is in fact a combination of other names
ulong bitsCount = (ulong)Extensions.GetEnumMaxPower(enumType) - 1; // skip first
ulong b = 1;
for (ulong bit = 1; bit < bitsCount; bit++) // signed, skip highest bit
{
string bitName = Enum.GetName(enumType, b);
if (bitName != null && name != bitName && (nameValue & b) != 0)
{
if ((uvalue & b) == 0)
{
isChecked = false;
}
}
b *= 2;
}
isChecked = (uvalue & nameValue) != 0;
item.IsChecked = isChecked;
items.Add(item);
}
// determine if the lisbox is empty, which we don't want anyway
if (items.Count == 0)
{
PropertyGridItem item = CreateItem();
item.Property = property;
item.Name = DefaultZeroName;
item.Value = 0;
item.IsZero = true;
items.Add(item);
}
if (uvalue == 0 && zero != null)
{
zero.IsChecked = true;
}
}
else
{
for (int i = 0; i < names.Length; i++)
{
string displayName;
if (!ShowEnumField(property, enumType, names[i], out displayName))
{
continue;
}
PropertyGridItem item = CreateItem();
item.Property = property;
item.Name = displayName;
item.Value = values.GetValue(i);
item.IsZero = i == 0; // first one is default
items.Add(item);
}
}
}
else
{
if (att != null && att.IsEnum)
{
bool manualFlags = false;
// either EnumList or EnumValues can be null but not both
// if not null, length must be the same
if (att.EnumNames == null || att.EnumNames.Length == 0)
{
if (att.EnumValues == null || att.EnumValues.Length == 0)
{
return(items);
}
att.EnumNames = new string[att.EnumValues.Length];
for (int i = 0; i < att.EnumValues.Length; i++)
{
att.EnumNames[i] = string.Format("{0}", att.EnumValues[i]);
}
}
else
{
if (att.EnumValues == null || att.EnumValues.Length != att.EnumNames.Length)
{
att.EnumValues = new object[att.EnumNames.Length];
if (att.IsFlagsEnum)
{
ulong current = 1; // don't use zero when nothing is specified in flags mode
manualFlags = true;
for (int i = 0; i < att.EnumNames.Length; i++)
{
att.EnumValues[i] = current;
current *= 2;
}
}
else
{
for (int i = 0; i < att.EnumNames.Length; i++)
{
att.EnumValues[i] = string.Format("{0}", att.EnumNames[i]);
}
}
}
}
// items value must of a compatible type with property.Value
Func <object, object> valueConverter = (v) =>
{
Type propType = property.Value != null?property.Value.GetType() : property.PropertyType;
if (v == null)
{
if (!propType.IsValueType)
{
return(null);
}
return(Activator.CreateInstance(propType));
}
Type vType = v.GetType();
if (propType.IsAssignableFrom(vType))
{
return(v);
}
return(ConversionService.ChangeType(v, propType));
};
if (att.IsFlagsEnum)
{
ulong uvalue = EnumToUInt64(property, property.Value);
for (int i = 0; i < att.EnumNames.Length; i++)
{
ulong nameValue = EnumToUInt64(property, att.EnumValues[i]);
PropertyGridItem item = CreateItem();
item.Property = property;
item.Name = att.EnumNames[i];
item.Value = valueConverter(att.EnumValues[i]);
if (manualFlags)
{
item.IsZero = i == 0;
}
else
{
item.IsZero = nameValue == 0;
}
bool isChecked = true;
if (nameValue == 0)
{
zero = item;
}
// note: in this case, we don't support names as a combination of other names
ulong bitsCount = (ulong)GetEnumMaxPower(att) - 1; // skip first
ulong b = 1;
for (ulong bit = 1; bit < bitsCount; bit++) // signed, skip highest bit
{
if ((uvalue & b) == 0)
{
isChecked = false;
}
b *= 2;
}
isChecked = (uvalue & nameValue) != 0;
item.IsChecked = isChecked;
items.Add(item);
}
// determine if the list is empty, which we don't want anyway
if (items.Count == 0)
{
PropertyGridItem item = CreateItem();
item.Property = property;
item.Name = DefaultZeroName;
item.Value = valueConverter(0);
item.IsZero = true;
items.Add(item);
}
if (uvalue == 0 && zero != null)
{
zero.IsChecked = true;
}
}
else
{
for (int i = 0; i < att.EnumNames.Length; i++)
{
PropertyGridItem item = CreateItem();
item.Property = property;
item.Name = att.EnumNames[i];
item.Value = valueConverter(att.EnumValues[i]);
item.IsZero = i == 0; // first one is default
items.Add(item);
}
}
}
}
var ctx = new Dictionary <string, object>();
ctx["items"] = items;
property.OnEvent(this, ActivatorService.CreateInstance <PropertyGridEventArgs>(property, ctx));
return(items);
}
public static object EnumToObject(PropertyGridOptionsAttribute options, Type propertyType, object value)
{
if (options == null)
{
throw new ArgumentNullException("options");
}
if (propertyType == null)
{
throw new ArgumentNullException("propertyType");
}
if (value != null && propertyType.IsEnum)
{
return(Extensions.EnumToObject(propertyType, value));
}
if (value != null && value.GetType().IsEnum)
{
return(Extensions.EnumToObject(value.GetType(), value));
}
if (propertyType != typeof(string))
{
return(ConversionService.ChangeType(value, propertyType));
}
if (options == null || options.EnumNames == null || options.EnumValues == null || options.EnumValues.Length != options.EnumNames.Length)
{
return(ConversionService.ChangeType(value, propertyType));
}
if (BaseConverter.IsNullOrEmptyString(value))
{
return(string.Empty);
}
var sb = new StringBuilder();
string svalue = string.Format("{0}", value);
ulong ul;
if (!ulong.TryParse(svalue, out ul))
{
var enums = ParseEnum(svalue);
if (enums.Count == 0)
{
return(string.Empty);
}
var enumValues = options.EnumValues.Select(v => string.Format("{0}", v)).ToArray();
foreach (string enumValue in enums)
{
int index = IndexOf(enumValues, enumValue);
if (index < 0)
{
index = IndexOf(options.EnumNames, enumValue);
}
if (index >= 0)
{
if (sb.Length > 0 && options.EnumSeparator != null)
{
sb.Append(options.EnumSeparator);
}
sb.Append(options.EnumNames[index]);
}
}
}
else // a string
{
ulong bitsCount = (ulong)GetEnumMaxPower(options) - 1; // skip first
ulong b = 1;
for (ulong bit = 1; bit < bitsCount; bit++) // signed, skip highest bit
{
if ((ul & b) != 0)
{
int index = IndexOf(options.EnumValues, b);
if (index >= 0)
{
if (sb.Length > 0 && options.EnumSeparator != null)
{
sb.Append(options.EnumSeparator);
}
sb.Append(options.EnumNames[index]);
}
}
b *= 2;
}
}
string s = sb.ToString();
if (s.Length == 0)
{
int index = IndexOf(options.EnumValues, 0);
if (index >= 0)
{
s = options.EnumNames[index];
}
}
return(s);
}
public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
{
object convertedValue = targetType == null ? value : ConversionService.ChangeType(value, targetType, null, culture);
return(convertedValue);
}