/// <summary>
/// This method is invoked when the Child property changes.
/// http://referencesource.microsoft.com/#PresentationFramework/src/Framework/System/Windows/Controls/ContentControl.cs,262
/// </summary>
/// <param name="oldChild">The old value of the Child property.</param>
/// <param name="newChild">The new value of the Child property.</param>
protected virtual void OnChildChanged(BaseBox oldChild, BaseBox newChild)
{
this.RemoveLogicalChild(oldChild);
if (newChild != null)
{
DependencyObject logicalParent = LogicalTreeHelper.GetParent(newChild);
if (logicalParent != null)
{
if (this.TemplatedParent != null && FrameworkObject.IsEffectiveAncestor(logicalParent, this))
{
// In the case that this SpinnerDecorator belongs in a parent template
// and represents the content of a parent, we do not wish to change
// the logical ancestry of the content.
return;
}
else
{
// If the new content was previously hooked up to the logical
// tree then we sever it from the old parent.
var message = "Cannot add child that already belongs to a parent.\r\n" +
"Fixing this requires more source diving than I feel like right now.\r\n" +
"Waiting to see if it becomes a problem";
throw new NotSupportedException(message);
//LogicalTreeHelper.RemoveLogicalChild(logicalParent, newChild);
}
}
}
// Add the new content child
this.AddLogicalChild(newChild);
}
public static RegexValidationResult CreateErrorResult(string text, BaseBox box)
{
var formatAndCulture = PleaseProvideValidInputFormatAndCulture.GetOrCreate(box.Culture);
var message = formatAndCulture.Format;
return(new RegexValidationResult(text, box.RegexPattern, null, box.Culture, formatAndCulture, false, message));
}
public static RegexValidationResult CreateErrorResult(string text, BaseBox box)
{
var formatAndCulture = PleaseProvideValidInputFormatAndCulture.GetOrCreate(box.Culture);
var message = formatAndCulture.Format;
return(new RegexValidationResult(
text: text,
pattern: box.RegexPattern,
exception: null,
currentBoxCulture: box.Culture,
formatAndCulture: formatAndCulture,
isValid: false,
errorContent: message));
}
public static RegexValidationResult CreateMalformedPatternErrorResult(string text, Exception exception, BaseBox box)
{
if (box is null)
{
throw new ArgumentNullException(nameof(box));
}
var formatAndCulture = SyntaxErrorInRegexPatternFormatAndCulture.GetOrCreate(box.Culture);
var message = formatAndCulture.Format;
return(new RegexValidationResult(
text: text,
pattern: box.RegexPattern,
exception: exception,
currentBoxCulture: box.Culture,
formatAndCulture: formatAndCulture,
isValid: false,
errorContent: message));
}
public FormattedView(BaseBox baseBox)
{
this.baseBox = baseBox;
}
public FormattedView(BaseBox baseBox)
{
this.baseBox = baseBox;
}
internal static object ValidateAndGetValue(BaseBox box)
{
var converter = box.TextValueConverter;
var expression = box.TextBindingExpression;
if (converter is null)
{
Validation.MarkInvalid(expression, new ValidationError(RegexValidationRule.FromText, expression.ParentBinding, $"{BaseBox.TextValueConverterProperty.Name} == null", null));
return(Binding.DoNothing);
}
var validated = false;
var value = Default;
foreach (var rule in box.ValidationRules)
{
switch (rule.ValidationStep)
{
case ValidationStep.RawProposedValue:
{
var result = rule.Validate(box.Text, GetCulture(expression), expression);
if (!result.IsValid)
{
Validation.MarkInvalid(expression, new ValidationError(rule, expression.ParentBinding, result, null));
return(Binding.DoNothing);
}
validated = true;
break;
}
case ValidationStep.UpdatedValue:
case ValidationStep.CommittedValue:
case ValidationStep.ConvertedProposedValue:
{
if (value == Default)
{
value = converter.Convert(box.Text, null, box, GetCulture(expression));
}
if (value == Binding.DoNothing)
{
continue;
}
var result = rule.Validate(value, GetCulture(expression), expression);
if (!result.IsValid)
{
Validation.MarkInvalid(expression, new ValidationError(rule, expression.ParentBinding, result, null));
return(Binding.DoNothing);
}
validated = true;
break;
}
default:
throw new ArgumentOutOfRangeException(nameof(box), rule.ValidationStep, "Unhandled validation step.");
}
}
if (validated)
{
Validation.ClearInvalid(expression);
}
if (value == Default)
{
value = converter.Convert(box.Text, null, box, GetCulture(expression));
}
return(value);
}
internal static void UpdateValidation(BaseBox box)
{
ValidateAndGetValue(box);
}
internal FormattedView(BaseBox baseBox)
{
this.baseBox = baseBox;
}
public static RegexValidationResult CreateMalformedPatternErrorResult(string text, Exception exception, BaseBox box)
{
var formatAndCulture = SyntaxErrorInRegexPatternFormatAndCulture.GetOrCreate(box.Culture);
var message = formatAndCulture.Format;
return(new RegexValidationResult(text, box.RegexPattern, exception, box.Culture, formatAndCulture, false, message));
}
internal static object ValidateAndGetValue(BaseBox box)
{
var converter = box.TextValueConverter;
var expression = box.TextBindingExpression;
if (converter == null)
{
Validation.MarkInvalid(expression, new ValidationError(IsMatch.FromText, expression.ParentBinding, $"{BaseBox.TextValueConverterProperty.Name} == null", null));
return Binding.DoNothing;
}
bool validated = false;
var value = Default;
foreach (var rule in box.ValidationRules)
{
switch (rule.ValidationStep)
{
case ValidationStep.RawProposedValue:
{
var result = rule.Validate(box.Text, GetCulture(expression), expression);
if (!result.IsValid)
{
Validation.MarkInvalid(expression, new ValidationError(rule, expression.ParentBinding, result, null));
return Binding.DoNothing;
}
validated = true;
break;
}
case ValidationStep.UpdatedValue:
case ValidationStep.CommittedValue:
case ValidationStep.ConvertedProposedValue:
{
if (value == Default)
{
value = converter.Convert(box.Text, null, box, GetCulture(expression));
}
if (value == Binding.DoNothing)
{
continue;
}
var result = rule.Validate(value, GetCulture(expression), expression);
if (!result.IsValid)
{
Validation.MarkInvalid(expression, new ValidationError(rule, expression.ParentBinding, result, null));
return Binding.DoNothing;
}
validated = true;
break;
}
default:
throw new ArgumentOutOfRangeException();
}
}
if (validated)
{
Validation.ClearInvalid(expression);
}
if (value == Default)
{
value = converter.Convert(box.Text, null, box, GetCulture(expression));
}
return value;
}
internal static void UpdateValidation(BaseBox box)
{
ValidateAndGetValue(box);
}