public static BindingDefinitionComposite CreateInstance(Type type, BindingDefinitionDescription definitionDescription)
{
try
{
if (string.IsNullOrEmpty(definitionDescription.Name))
{
definitionDescription.Name = definitionDescription.BindingExpression.Replace('.', '_');
MatchCollection ret = ValidCharExtract.Matches(definitionDescription.Name);
StringBuilder sb = new StringBuilder();
foreach (Match m in ret)
{
sb.Append(m.Value);
}
definitionDescription.Name = sb.ToString();
}
definitionDescription.BindingExpression = definitionDescription.BindingExpression.Substring(1);
definitionDescription.BindingExpression = definitionDescription.BindingExpression.Substring(0, definitionDescription.BindingExpression.Length - 1);
BindingDefinitionComposite definition = null;
string bindingFormat = definitionDescription.BindingExpression;
List <string> results = new List <string>();
MatchCollection matches = Regex.Matches(bindingFormat, pattern);
int cpt = -1;
foreach (Match match in matches)
{
string[] elements = match.Value.Split(new[] { "::" }, StringSplitOptions.None);
if (string.IsNullOrEmpty(elements[0]))
{
bindingFormat = bindingFormat.Replace($"{{{match.Value}}}", string.Empty);
}
else
{
int pos = results.FindIndex(s => s.Equals(elements[0]));
if (pos == -1)
{
results.Add(elements[0]);
pos = ++cpt;
}
else
{
pos = cpt;
}
string format = $"{{{match.Value}}}";
bindingFormat = bindingFormat.Replace(format, $"{{{pos}}}");
}
}
if (results.Count > 0)
{
List <BindingDefinitionDescription> definitionDescriptions = new List <BindingDefinitionDescription>();
if (results.Count == 1)
{
definitionDescriptions.Add(new BindingDefinitionDescription()
{
BindingExpression = results[0], IsReadOnly = definitionDescription.IsReadOnly
});
}
else
{
definitionDescriptions.AddRange(results.Select(s => new BindingDefinitionDescription()
{
BindingExpression = s, IsReadOnly = true
}));
}
List <IBindingDefinition> nestedDefinitions = BindingDefinitionFactory.CreateInstances(type, definitionDescriptions);
if (nestedDefinitions.FirstOrDefault(nd => nd.IsACollection) != null)
{
throw new BindingTemplateException("The nested 'BindingDefinition' of a 'Composite BindingDefinition' cannot be a collection");
}
// If more than one nested definition, then force the Binding definition to be ReadOnly
definitionDescription.IsReadOnly = nestedDefinitions.Count > 1 || nestedDefinitions[0].IsReadOnly;
definition = new BindingDefinitionComposite(definitionDescription)
{
nestedDefinitions = nestedDefinitions, BindingFormat = bindingFormat, BindingType = typeof(string)
};
definition.canBeNotifiedNestedDefinitions = definition.nestedDefinitions.Where(d => d.CanNotify).ToList();
definition.CanNotify = definition.canBeNotifiedNestedDefinitions.Count > 0;
}
return(definition);
}
catch (Exception ex)
{
throw new BindingTemplateException($"Cannot create the 'Composite BindingDefinition' '{definitionDescription.BindingExpression}'. {ex.Message}");
}
}
/// <summary> Create a binding definition for a given <see cref="BindingDefinitionDescription"/> of a given <see cref="Type"/> </summary>
/// <param name="sourceType">The Type on which the '<see cref="BindingDefinitionDescription"/>' is based</param>
/// <param name="definitionDescription">The given <see cref="Type"/></param>
/// <returns>The newly created Binding definition or an exception is an error occurs</returns>
internal static IBindingDefinition CreateInstance(Type sourceType, BindingDefinitionDescription definitionDescription)
{
if (string.IsNullOrEmpty(definitionDescription?.BindingExpression))
{
return(null);
}
try
{
/// Optional
////////////
if (sourceType == null)
{
return(BindingDefinitionOptional.CreateInstance(definitionDescription));
}
/// Composite
/////////////
if (definitionDescription.BindingExpression.StartsWith("{") && definitionDescription.BindingExpression.EndsWith("}"))
{
return(BindingDefinitionComposite.CreateInstance(sourceType, definitionDescription));
}
/// Hierarchical
////////////////
if (definitionDescription.BindingExpression.Contains("."))
{
return(BindingDefinitionHierarchical.CreateInstance(sourceType, definitionDescription));
}
//// keyword
////////////
//if (definition == null && BindingDefinitionKeyWord.KeyWords.Contains(bindingName))
// definition = BindingDefinitionKeyWord.CreateInstances(bindingName);
/// Properties
//////////////
List <PropertyInfo> propertyInfos = (from pi in sourceType.GetProperties()
where pi.Name.Equals(definitionDescription.BindingExpression) && pi.GetGetMethod() != null && pi.GetGetMethod().IsPublic
select pi).ToList();
if (propertyInfos != null && propertyInfos.Count > 0)
{
PropertyInfo propertyInfo;
if (propertyInfos.Count == 1)
{
propertyInfo = propertyInfos[0];
}
else // To take the keuword 'new' into account
{
propertyInfo = propertyInfos.FirstOrDefault(pi => { MethodInfo mi = pi.GetGetMethod();
bool isNew = (mi.Attributes & MethodAttributes.HideBySig) == MethodAttributes.HideBySig && mi.DeclaringType.Equals(sourceType);
return(isNew); });
}
return(BindingDefinitionProperty.CreateInstance(propertyInfo, definitionDescription));
}
/// Fields
//////////
FieldInfo fieldInfo = sourceType.GetFields().FirstOrDefault(fi => fi.Name.Equals(definitionDescription.BindingExpression) && fi.IsPublic);
if (fieldInfo != null)
{
return(BindingDefinitionField.CreateInstance(fieldInfo, definitionDescription));
}
/// Methods
///////////
MethodInfo methodInfo = sourceType.GetMethods().FirstOrDefault(mi => mi.Name.Equals(definitionDescription.BindingExpression) && mi.IsPublic);
if (methodInfo != null)
{
return(BindingDefinitionMethod.CreateInstance(methodInfo));
}
return(BindingDefinitionOptional.CreateInstance(definitionDescription));
}
catch (Exception ex)
{
throw new BindingTemplateException($"Cannot create 'BindingDefinition' between '{sourceType.Name}' and '{definitionDescription.BindingExpression}'", ex);
}
}
