protected ClientBoundUIHintAttribute(DataBindingAttributeDictionary dataBindingAttributeDictionary, DataBindingMode validForModes, string uiHint)
: base(uiHint)
{
if (dataBindingAttributeDictionary == null)
{
throw new ArgumentNullException("dataBindingAttributeDictionary");
}
DataBindingAttributeDictionary = dataBindingAttributeDictionary;
_validForModes = validForModes;
}
public override DataBindingAttributeDictionary ApplyExtension(DataBindingAttributeDictionary bindings, DataBindingMode currentMode)
{
if (!_validForModes.HasFlag(currentMode) || !bindings.Any(b => b.Key == _attributeName))
{
return(bindings);
}
var valueBinding = bindings.First(b => b.Key == _attributeName);
var extendedValueBinding = BuildExtensionString(valueBinding.Value.ToString());
bindings.SetAttribute(valueBinding.Key, extendedValueBinding);
return(bindings);
}
/// <summary>
/// Constructs a DataBindingAttributeDictionary consisting of all data binding attributes for supplied expression.
/// </summary>
/// <typeparam name="TModel"></typeparam>
/// <typeparam name="TValue"></typeparam>
/// <param name="expression">An expression indicating the property for which the build the DataBindingAttributeDictionary.</param>
/// <param name="viewData"></param>
/// <param name="mode"></param>
/// <param name="bindingLevel"></param>
/// <returns></returns>
public DataBindingAttributeDictionary BuildDataBindingAttributesFor <TModel, TValue>(Expression <Func <TModel, TValue> > expression, ViewDataDictionary <TModel> viewData, DataBindingMode mode, ClientBindingLevel bindingLevel)
{
var dataBindingAttributes = new DataBindingAttributeDictionary();
var dataBindingInfoFactory = new DataBindingInfoFactory();
var bindingInfo = dataBindingInfoFactory.CreateDataBindingAttributeInfoFor(expression, mode, bindingLevel);
dataBindingAttributes.MergeAttribute(bindingInfo);
//GetClientSideDataBindingAttributesFor(dataBindingAttributes, expression, mode);
GetClientSideDataBindingAttributesFor(dataBindingAttributes, expression, mode);
//dataBindingAttributes.MergeAttributes(clientSideDataBindingAttributes);
return(dataBindingAttributes);
}
private static DataBindingAttributeDictionary BuildDataBindingAttributeDictionary(string attributes)
{
if (attributes == null)
{
throw new ArgumentNullException("attributes");
}
var dictionary = new DataBindingAttributeDictionary();
foreach (var a in attributes.Split(','))
{
var attr = a.Split(':');
dictionary.SetAttribute(attr[0], attr[1]);
}
return(dictionary);
}
private static DataBindingAttributeDictionary BuildDataBindingAttributeDictionary(string attributeName, string attributeValue)
{
if (string.IsNullOrWhiteSpace(attributeName))
{
throw new ArgumentNullException("attributeName");
}
if (string.IsNullOrWhiteSpace(attributeValue))
{
throw new ArgumentNullException("attributeValue");
}
var dictionary = new DataBindingAttributeDictionary();
dictionary.SetAttribute(attributeName, attributeValue);
return(dictionary);
}
private static DataBindingAttributeDictionary BuildDataBindingAttributeDictionary(string dataSourceName, string valuePropertyName, ClientBindingLevel bindingLevel, string displayPropertyName, string optionsCaption)
{
if (dataSourceName == null) { throw new ArgumentNullException("dataSourceName"); }
if (string.IsNullOrWhiteSpace(dataSourceName)) { throw new ArgumentException("Data source name cannot be empty.", "dataSourceName"); }
if (displayPropertyName == null) { throw new ArgumentNullException("displayPropertyName"); }
if (string.IsNullOrWhiteSpace(displayPropertyName)) { throw new ArgumentException("Display property name cannot be empty.", "displayPropertyName"); }
var dataBindingAttributeDictionary = new DataBindingAttributeDictionary();
dataBindingAttributeDictionary.SetAttribute("options", string.Format("{0}.{1}", GetBindingScope(bindingLevel), dataSourceName));
dataBindingAttributeDictionary.SetAttribute("optionsText", string.Format("'{0}'", displayPropertyName));
if (!string.IsNullOrWhiteSpace(valuePropertyName))
{
dataBindingAttributeDictionary.SetAttribute("optionsValue", string.Format("'{0}'", valuePropertyName));
}
if (!string.IsNullOrEmpty(optionsCaption))
{
dataBindingAttributeDictionary.SetAttribute("optionsCaption", string.Format("'{0}'", optionsCaption));
}
return dataBindingAttributeDictionary;
}
private ClientBoundSelectListAttribute(DataBindingAttributeDictionary dataBindingAttributeDictionary, string templateName)
: base(dataBindingAttributeDictionary, DataBindingMode.Editable | DataBindingMode.Readonly, templateName)
{
}
public abstract DataBindingAttributeDictionary ApplyExtension(DataBindingAttributeDictionary bindings, DataBindingMode currentMode);
private static DataBindingAttributeDictionary GetClientSideDataBindingAttributesFor <TModel, TValue>(DataBindingAttributeDictionary dataBindingAttributes, Expression <Func <TModel, TValue> > expression, DataBindingMode mode)
{
if (dataBindingAttributes == null)
{
throw new ArgumentNullException("dataBindingAttributes");
}
//var dataBindingAttributes = new DataBindingAttributeDictionary();
if (expression.Body.NodeType == ExpressionType.MemberAccess)
{
var member = ((MemberExpression)expression.Body).Member;
if (member.MemberType != MemberTypes.Property)
{
throw new NotSupportedException("The expression's return type must be a Property type.");
}
foreach (var bindingAttribute in member.GetCustomAttributes <ClientBoundUIHintAttribute>().Where(a => a.IsValidForMode(mode)))
{
if (!bindingAttribute.IsValidForProperty(member))
{
throw new ArgumentException(
String.Format(
"The ClientBoundUIHintAttribute, '{0}' does not support binding to the property '{1}' which is of type '{2}' and is a member of '{3}.",
bindingAttribute.GetType().FullName,
member.Name,
member.ReflectedType.FullName,
typeof(TModel).FullName));
}
dataBindingAttributes.MergeAttributes(bindingAttribute.GetDatabindingAttributes());
}
ApplyDataBindingExtensions(member, dataBindingAttributes, mode);
}
return(dataBindingAttributes);
}
//todo: write tests for public methods
public void StoreDataBindingAttributesFor(string propertyName, ViewDataDictionary viewData, DataBindingAttributeDictionary attributes)
{
var dataBindingAttributes = GetDataBindingAttributesForCurrentContext(viewData);
dataBindingAttributes.MergeAttributes(attributes);
}
private static DataBindingAttributeDictionary ApplyDataBindingExtensions(MemberInfo property, DataBindingAttributeDictionary dataBindingAttributes, DataBindingMode mode)
{
foreach (var extensionAttribute in property.GetCustomAttributes <ClientBoundExtensionAttribute>())
{
extensionAttribute.ApplyExtension(dataBindingAttributes, mode);
}
return(dataBindingAttributes);
}
public KnockoutDataBindingObject(DataBindingAttributeDictionary dataBindingAttributes, object additionalViewData)
{
DataBindingAttributes = dataBindingAttributes;
AdditionalViewData = additionalViewData;
}
