/// <summary>
/// Get a ReflectedControl for the given markup tag, if one exists, restricting the search
/// to just class types that are included in the allowed-types list (or types that inherit from them).
/// </summary>
/// <param name="compileContext">The context in which errors should be reported.</param>
/// <param name="tag">The complete markup tag to search for.</param>
/// <param name="allowedTypes">The allowed types that can be returned. If you want to accept
/// all possible types, pass in a list containing just typeof(object).</param>
/// <returns>The found control type.</returns>
public ReflectedControl GetControl(ICompileContext compileContext, Tag tag, IEnumerable <Type> allowedTypes)
{
bool isNormalServerControl = tag.TagName.Contains(":");
if (isNormalServerControl && _reflectedControls.ContainsKey(tag.TagName))
{
return(_reflectedControls[tag.TagName]);
}
ReflectedControl reflectedControl = new ReflectedControl(compileContext, tag, _tagRegistrations, _assemblies, allowedTypes);
if (isNormalServerControl && tag.TagName.Contains(":"))
{
_reflectedControls[tag.TagName] = reflectedControl;
}
return(reflectedControl);
}
/// <summary>
/// Construct an instance of a ReflectedControlProperty, given the control for this property and the
/// pre-reflected PropertyInfo for the property in question.
/// </summary>
/// <param name="reflectedControl">The control that owns this property.</param>
/// <param name="propertyInfo">The pre-reflected PropertyInfo for this property.</param>
public ReflectedControlProperty(ReflectedControl reflectedControl, PropertyInfo propertyInfo)
{
ReflectedControl = reflectedControl;
PropertyInfo = propertyInfo;
System.Web.UI.PersistenceModeAttribute[] persistenceModeAttributes = (System.Web.UI.PersistenceModeAttribute[])propertyInfo.GetCustomAttributes(typeof(System.Web.UI.PersistenceModeAttribute), true);
PersistenceModeAttribute = persistenceModeAttributes.Length == 0 ? null : persistenceModeAttributes[0];
IsTemplateProperty = typeof(System.Web.UI.ITemplate).IsAssignableFrom(PropertyInfo.PropertyType);
IsCollectionProperty = typeof(IEnumerable).IsAssignableFrom(PropertyInfo.PropertyType) && !IsTemplateProperty;
if (IsTemplateProperty)
{
System.Web.UI.TemplateInstanceAttribute[] templateInstanceAttributes = (System.Web.UI.TemplateInstanceAttribute[])propertyInfo.GetCustomAttributes(typeof(System.Web.UI.TemplateInstanceAttribute), true);
TemplateInstanceAttribute = templateInstanceAttributes.Length == 0 ? null : templateInstanceAttributes[0];
System.Web.UI.TemplateContainerAttribute[] templateContainerAttributes = (System.Web.UI.TemplateContainerAttribute[])propertyInfo.GetCustomAttributes(typeof(System.Web.UI.TemplateContainerAttribute), true);
TemplateContainerAttribute = templateContainerAttributes.Length == 0 ? null : templateContainerAttributes[0];
}
else if (IsCollectionProperty)
{
CollectionItemTypes = GetCollectionItemTypes(PropertyInfo.PropertyType);
}
}
/// <summary>
/// Find all of the properties for this control, via reflection.
/// </summary>
/// <returns>A dictionary of properties for the given control type.</returns>
private static Dictionary <string, ReflectedControlProperty> CollectControlProperties(ICompileContext compileContext, Type controlType, ReflectedControl reflectedControl)
{
Dictionary <string, ReflectedControlProperty> controlProperties = new Dictionary <string, ReflectedControlProperty>();
// We have to include NonPublic properties, since internal, public, or protected properties can all be
// legally referenced from the markup.
PropertyInfo[] propertyInfos = controlType.GetProperties(BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic);
foreach (PropertyInfo propertyInfo in propertyInfos)
{
// Find out what kind of getters and setter this property has. If it has none, or both of them are private, we can't work with it.
MethodInfo setMethodInfo = propertyInfo.GetSetMethod(true);
MethodInfo getMethodInfo = propertyInfo.GetGetMethod(true);
bool hasUsableSetMethod = (setMethodInfo != null && (setMethodInfo.IsPublic || setMethodInfo.IsFamilyOrAssembly));
bool hasUsableGetMethod = (getMethodInfo != null && (getMethodInfo.IsPublic || getMethodInfo.IsFamilyOrAssembly));
if (!hasUsableSetMethod && !hasUsableGetMethod)
{
continue;
}
// We have a public-ish setter. So add a ReflectedControlProperty instance for this property,
// since it could be accessible from markup.
ReflectedControlProperty reflectedControlProperty = new ReflectedControlProperty(reflectedControl, propertyInfo);
// Add it to the set of known properties for this control. We don't have the ability to support
// case differentiation on property names, and ASP.NET will bork if anybody tries. So if you have
// multiple properties with the same name that differ only by case, that's just bad mojo, and you
// should change your controls so that isn't true anymore.
string lowerName = propertyInfo.Name.ToLower();
if (controlProperties.ContainsKey(lowerName))
{
ReflectedControlProperty previousProperty = controlProperties[lowerName];
Type previousPropertyDeclaringType = previousProperty.PropertyInfo.DeclaringType;
PropertyInfo baseProperty = previousPropertyDeclaringType.BaseType.GetProperty(lowerName, BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.IgnoreCase);
if (baseProperty == null)
{
compileContext.Warning(string.Format("The server control \"{0}\" contains multiple properties named \"{1}\". Keeping the {2} declaration and discarding the {3} declaration.",
controlType.FullName, propertyInfo.Name, controlProperties[lowerName].PropertyInfo.PropertyType.FullName, propertyInfo.PropertyType.FullName));
}
else
{
// This appears to be a case of a child class's property shadowing a parent class's property.
// That's a safe thing, or should be, so we don't throw out a warning when it happens.
compileContext.Verbose(string.Format("The server control \"{0}\" contains multiple properties named \"{1}\" (but one comes from a parent class, so the 'new' keyword was probably involved, and this should be safe). Keeping the {2} declaration and discarding the {3} declaration.",
controlType.FullName, propertyInfo.Name, controlProperties[lowerName].PropertyInfo.PropertyType.FullName, propertyInfo.PropertyType.FullName));
}
continue;
}
controlProperties.Add(lowerName, reflectedControlProperty);
}
return(controlProperties);
}
