/// <summary>
/// Creates a <see cref="DataSourceDefinition"/> structure for the specified XML document.
/// </summary>
/// <param name="xdocument">The XML document from which to load a data source definition.</param>
/// <param name="namespace">The namespace within which to place the compiled view model.</param>
/// <param name="name">The name of the data source's view model.</param>
/// <param name="path">The path to the file that defines the data source.</param>
/// <returns>The instance of <see cref="DataSourceDefinition"/> that was created, or <see langword="null"/> if the specified
/// XML does not contain a valid view.</returns>
public static DataSourceDefinition? CreateDataSourceDefinitionFromXml(XDocument xdocument, String @namespace, String name, String path)
{
if (xdocument.Root.Name.LocalName != "UIPanelDefinition")
return null;
var viewdef = xdocument.Root.Element("View");
if (viewdef == null)
return null;
return DataSourceDefinition.FromView(@namespace, name, path, viewdef);
}
/// <summary>
/// Creates a new instance of <see cref="DataSourceWrapperInfo"/> that represents the specified data source wrapper.
/// </summary>
/// <param name="state">The expression compiler's current state.</param>
/// <param name="dataSourceDefinition">The data source definition for which to retrieve data source wrapper info.</param>
/// <returns>The <see cref="DataSourceWrapperInfo"/> that was created to represent the specified data source.</returns>
public static DataSourceWrapperInfo GetDataSourceWrapperInfo(IExpressionCompilerState state, DataSourceDefinition dataSourceDefinition)
{
var dataSourceWrappedType = dataSourceDefinition.TemplatedControl;
if (dataSourceWrappedType == null)
{
var definedDataSourceTypeAttr = dataSourceDefinition.Definition.Attribute("ViewModelType");
var definedDataSourceTypeName = (String)definedDataSourceTypeAttr;
if (definedDataSourceTypeName == null)
{
return(null);
}
var typeNameCommaIx = definedDataSourceTypeName.IndexOf(',');
if (typeNameCommaIx < 0)
{
throw new BindingExpressionCompilationErrorException(definedDataSourceTypeAttr, dataSourceDefinition.DefinitionPath,
CompilerStrings.ViewModelTypeIsNotFullyQualified.Format(definedDataSourceTypeName));
}
var definedDataSourceType = Type.GetType(definedDataSourceTypeName);
if (definedDataSourceType == null)
{
throw new BindingExpressionCompilationErrorException(definedDataSourceTypeAttr, dataSourceDefinition.DefinitionPath,
PresentationStrings.ViewModelTypeNotFound.Format(definedDataSourceTypeName));
}
dataSourceWrappedType = definedDataSourceType;
}
var dataSourceWrapperName = dataSourceDefinition.DataSourceWrapperName;
var dataSourceWrapperExpressions = new List <BindingExpressionInfo>();
foreach (var element in dataSourceDefinition.Definition.Elements())
{
FindBindingExpressionsInDataSource(state,
dataSourceDefinition, dataSourceWrappedType, element, dataSourceWrapperExpressions);
}
dataSourceWrapperExpressions = CollapseDataSourceExpressions(dataSourceWrapperExpressions);
var dataSourceReferences = new List <String>();
var dataSourceImports = new List <String>();
var xmlRoot = dataSourceDefinition.Definition.Parent;
var xmlDirectives = xmlRoot.Elements("Directive");
foreach (var xmlDirective in xmlDirectives)
{
var xmlDirectiveType = (String)xmlDirective.Attribute("Type");
if (String.IsNullOrEmpty(xmlDirectiveType))
{
throw new BindingExpressionCompilationErrorException(xmlDirective, dataSourceDefinition.DefinitionPath,
CompilerStrings.ViewDirectiveMustHaveType);
}
var xmlDirectiveTypeName = xmlDirectiveType.ToLowerInvariant();
var xmlDirectiveValue = xmlDirective.Value.Trim();
switch (xmlDirectiveTypeName)
{
case "import":
{
if (String.IsNullOrEmpty(xmlDirectiveValue))
{
throw new BindingExpressionCompilationErrorException(xmlDirective, dataSourceDefinition.DefinitionPath,
CompilerStrings.ViewDirectiveHasInvalidValue);
}
dataSourceImports.Add(xmlDirective.Value.Trim());
}
break;
case "reference":
{
if (String.IsNullOrEmpty(xmlDirectiveValue))
{
throw new BindingExpressionCompilationErrorException(xmlDirective, dataSourceDefinition.DefinitionPath,
CompilerStrings.ViewDirectiveHasInvalidValue);
}
dataSourceReferences.Add(xmlDirective.Value.Trim());
}
break;
default:
throw new BindingExpressionCompilationErrorException(xmlDirective, dataSourceDefinition.DefinitionPath,
CompilerStrings.ViewDirectiveNotRecognized.Format(xmlDirectiveTypeName));
}
}
var frameworkTemplates = new Dictionary <String, XElement>();
FindFrameworkTemplateElements(dataSourceDefinition.Definition, frameworkTemplates);
var frameworkTemplateWrapperDefs = frameworkTemplates.Select(x =>
DataSourceDefinition.FromView(dataSourceDefinition.DataSourceWrapperNamespace, x.Key, dataSourceDefinition.DefinitionPath, x.Value)).ToList();
var frameworkTemplateWrapperInfos = frameworkTemplateWrapperDefs.Select(definition =>
GetDataSourceWrapperInfoForFrameworkTemplate(state, dataSourceReferences, dataSourceImports, definition)).ToList();
return(new DataSourceWrapperInfo()
{
References = dataSourceReferences,
Imports = dataSourceImports,
DataSourceDefinition = dataSourceDefinition,
DataSourcePath = dataSourceDefinition.DefinitionPath,
DataSourceType = dataSourceWrappedType,
DataSourceWrapperName = dataSourceWrapperName,
Expressions = dataSourceWrapperExpressions,
DependentWrapperInfos = frameworkTemplateWrapperInfos
});
}