public static string ToString(ActivityWithResult activity)
{
if (activity == null)
{
return(null);
}
if (activity.GetType().IsConstructedGenericTypeOf(typeof(Literal <>)) && CSharpConvert.IsCodePrimitive(activity.ResultType))
{
return(CSharpConvert.ToString(((dynamic)activity).Value));
}
var serializableExpression = activity as IValueSerializableExpression;
if (serializableExpression != null && serializableExpression.CanConvertToString(null))
{
return(serializableExpression.ConvertToString(null));
}
var textExpression = activity as ITextExpression;
if (textExpression != null)
{
return(textExpression.ExpressionText);
}
return(null);
}
internal static Argument MorphArgument(ModelItem originalValue, Type targetType)
{
Argument morphed = null;
Argument original = (Argument)originalValue.GetCurrentValue();
ActivityWithResult originalExpression = original.Expression;
if (originalExpression != null)
{
Type expressionType = originalExpression.GetType();
Type expressionGenericType = expressionType.IsGenericType ? expressionType.GetGenericTypeDefinition() : null;
if (expressionGenericType != null)
{
bool isLocation = ExpressionHelper.IsGenericLocationExpressionType(originalExpression);
ActivityWithResult morphedExpression;
EditingContext context = originalValue.GetEditingContext();
morphed = Argument.Create(targetType, original.Direction);
if (ExpressionHelper.TryMorphExpression(originalExpression, isLocation, targetType,
context, out morphedExpression))
{
morphed.Expression = morphedExpression;
}
//[....]
}
}
return(morphed);
}
public override ValidationResult Validate(object value, CultureInfo cultureInfo)
{
string errorMessage = string.Empty;
if (owner.Expression != value)
{
if (value != null)
{
ActivityWithResult expression = (value as ModelItem).GetCurrentValue() as ActivityWithResult;
if (expression == null)
{
errorMessage = string.Format(CultureInfo.CurrentUICulture, SR.ExpressionTypeDonnotMatch,
expression.GetType().FullName, typeof(ActivityWithResult).FullName);
}
else if ((owner.UseLocationExpression) && (!ExpressionHelper.IsGenericLocationExpressionType(expression)))
{
errorMessage = string.Format(CultureInfo.CurrentUICulture, SR.ExpressionTypeDonnotMatch,
expression.GetType().FullName, typeof(Activity <Location>).FullName);
}
else if ((!owner.UseLocationExpression && (owner.ExpressionType != null) && (expression.ResultType != owner.ExpressionType)) ||
(owner.UseLocationExpression && (owner.ExpressionType != null) && (expression.ResultType != typeof(Location <>).MakeGenericType(owner.ExpressionType))))
{
errorMessage = string.Format(CultureInfo.CurrentUICulture, SR.ExpressionTypeDonnotMatch,
expression.GetType().FullName, typeof(Activity <>).MakeGenericType(owner.ExpressionType).FullName);
}
}
}
if (!string.IsNullOrEmpty(errorMessage))
{
//Disable ToolTip on inner editor if it has
ToolTipService.SetIsEnabled(owner.Editor, false);
owner.ToolTip = errorMessage;
return(new ValidationResult(false, errorMessage));
}
else
{
ToolTipService.SetIsEnabled(owner.Editor, true);
owner.ToolTip = null;
return(new ValidationResult(true, null));
}
}
public override bool TryInferReturnType(ActivityWithResult expression, EditingContext context, out Type returnType)
{
bool succeeded = false;
Fx.Assert(expression.GetType().GetGenericTypeDefinition() == typeof(VisualBasicValue <>) ||
expression.GetType().GetGenericTypeDefinition() == typeof(VisualBasicReference <>), "VisualBasicExpressionMorphHelper should only apply to VB expression.");
SourceExpressionException compileError;
VisualBasicSettings settings;
if (ExpressionHelper.IsGenericLocationExpressionType(expression))
{
VisualBasicDesignerHelper.RecompileVisualBasicReference(
expression,
out returnType,
out compileError,
out settings);
}
else
{
VisualBasicDesignerHelper.RecompileVisualBasicValue(
expression,
out returnType,
out compileError,
out settings);
}
if (compileError == null)
{
succeeded = true;
if (settings != null)
{
//merge with import designer
foreach (VisualBasicImportReference reference in settings.ImportReferences)
{
ImportDesigner.AddImport(reference.Import, context);
}
}
}
return(succeeded);
}
public override bool TryInferReturnType(ActivityWithResult expression, EditingContext context, out Type returnType)
{
bool succeeded = false;
Fx.Assert(expression.GetType().GetGenericTypeDefinition() == typeof(VisualBasicValue<>) ||
expression.GetType().GetGenericTypeDefinition() == typeof(VisualBasicReference<>), "VisualBasicExpressionMorphHelper should only apply to VB expression.");
SourceExpressionException compileError;
VisualBasicSettings settings;
if (ExpressionHelper.IsGenericLocationExpressionType(expression))
{
VisualBasicDesignerHelper.RecompileVisualBasicReference(
expression,
out returnType,
out compileError,
out settings);
}
else
{
VisualBasicDesignerHelper.RecompileVisualBasicValue(
expression,
out returnType,
out compileError,
out settings);
}
if (compileError == null)
{
succeeded = true;
if (settings != null)
{
//merge with import designer
foreach (VisualBasicImportReference reference in settings.ImportReferences)
{
ImportDesigner.AddImport(reference.Import, context);
}
}
}
return succeeded;
}
internal static bool TryMorphExpression(ActivityWithResult originalExpression, bool isLocation, Type targetType,
EditingContext context, out ActivityWithResult morphedExpression)
{
bool succeeded = false;
morphedExpression = null;
if (originalExpression != null)
{
Type resultType = originalExpression.ResultType;
if ((isLocation) && (ExpressionHelper.IsGenericLocationExpressionType(originalExpression) && (targetType == resultType.GetGenericArguments()[0])) ||
(!isLocation) && (resultType == targetType))
{
//no need to morph
succeeded = true;
morphedExpression = originalExpression;
}
else
{
Type expressionType = originalExpression.GetType();
if (expressionType.IsGenericType)
{
expressionType = expressionType.GetGenericTypeDefinition();
}
ExpressionMorphHelperAttribute morphHelperAttribute = ExtensibilityAccessor.GetAttribute <ExpressionMorphHelperAttribute>(expressionType);
if (morphHelperAttribute != null)
{
ExpressionMorphHelper morphHelper = Activator.CreateInstance(morphHelperAttribute.ExpressionMorphHelperType) as ExpressionMorphHelper;
if (morphHelper != null)
{
succeeded = morphHelper.TryMorphExpression(originalExpression, isLocation, targetType, context, out morphedExpression);
if (succeeded && morphedExpression != null)
{
string editorName = ExpressionActivityEditor.GetExpressionActivityEditor(originalExpression);
if (!string.IsNullOrWhiteSpace(editorName))
{
ExpressionActivityEditor.SetExpressionActivityEditor(morphedExpression, editorName);
}
}
}
}
}
}
else
{
succeeded = true;
}
return(succeeded);
}
// this method may has side effect, it may modify model.
internal static bool TryInferReturnType(ActivityWithResult expression, EditingContext context, out Type returnType)
{
bool succeeded = false;
returnType = null;
Type expressionType = expression.GetType();
if (expressionType.IsGenericType)
{
expressionType = expressionType.GetGenericTypeDefinition();
ExpressionMorphHelperAttribute morphHelperAttribute = ExtensibilityAccessor.GetAttribute <ExpressionMorphHelperAttribute>(expressionType);
if (morphHelperAttribute != null)
{
ExpressionMorphHelper morphHelper = Activator.CreateInstance(morphHelperAttribute.ExpressionMorphHelperType) as ExpressionMorphHelper;
if (morphHelper != null)
{
succeeded = morphHelper.TryInferReturnType(expression, context, out returnType);
}
}
}
return(succeeded);
}
// this method may has side effect, it may modify model.
internal static bool TryInferReturnType(ActivityWithResult expression, EditingContext context, out Type returnType)
{
bool succeeded = false;
returnType = null;
Type expressionType = expression.GetType();
if (expressionType.IsGenericType)
{
expressionType = expressionType.GetGenericTypeDefinition();
ExpressionMorphHelperAttribute morphHelperAttribute = ExtensibilityAccessor.GetAttribute<ExpressionMorphHelperAttribute>(expressionType);
if (morphHelperAttribute != null)
{
ExpressionMorphHelper morphHelper = Activator.CreateInstance(morphHelperAttribute.ExpressionMorphHelperType) as ExpressionMorphHelper;
if (morphHelper != null)
{
succeeded = morphHelper.TryInferReturnType(expression, context, out returnType);
}
}
}
return succeeded;
}
internal static bool TryMorphExpression(ActivityWithResult originalExpression, bool isLocation, Type targetType,
EditingContext context, out ActivityWithResult morphedExpression)
{
bool succeeded = false;
morphedExpression = null;
if (originalExpression != null)
{
Type resultType = originalExpression.ResultType;
if ((isLocation) && (ExpressionHelper.IsGenericLocationExpressionType(originalExpression) && (targetType == resultType.GetGenericArguments()[0])) ||
(!isLocation) && (resultType == targetType))
{
//no need to morph
succeeded = true;
morphedExpression = originalExpression;
}
else
{
Type expressionType = originalExpression.GetType();
if (expressionType.IsGenericType)
{
expressionType = expressionType.GetGenericTypeDefinition();
}
ExpressionMorphHelperAttribute morphHelperAttribute = ExtensibilityAccessor.GetAttribute<ExpressionMorphHelperAttribute>(expressionType);
if (morphHelperAttribute != null)
{
ExpressionMorphHelper morphHelper = Activator.CreateInstance(morphHelperAttribute.ExpressionMorphHelperType) as ExpressionMorphHelper;
if (morphHelper != null)
{
succeeded = morphHelper.TryMorphExpression(originalExpression, isLocation, targetType, context, out morphedExpression);
if (succeeded && morphedExpression != null)
{
string editorName = ExpressionActivityEditor.GetExpressionActivityEditor(originalExpression);
if (!string.IsNullOrWhiteSpace(editorName))
{
ExpressionActivityEditor.SetExpressionActivityEditor(morphedExpression, editorName);
}
}
}
}
}
}
else
{
succeeded = true;
}
return succeeded;
}