/// <summary>Handles cases where a markup extension provides a value for a property of <see cref="T:System.Windows.Setter" /> object.</summary>
/// <param name="targetObject">The object where the markup extension sets the value.</param>
/// <param name="eventArgs">Data that is relevant for markup extension processing.</param>
// Token: 0x0600089C RID: 2204 RVA: 0x0001BFD0 File Offset: 0x0001A1D0
public static void ReceiveMarkupExtension(object targetObject, XamlSetMarkupExtensionEventArgs eventArgs)
{
if (targetObject == null)
{
throw new ArgumentNullException("targetObject");
}
if (eventArgs == null)
{
throw new ArgumentNullException("eventArgs");
}
Setter setter = targetObject as Setter;
if (setter == null || eventArgs.Member.Name != "Value")
{
return;
}
MarkupExtension markupExtension = eventArgs.MarkupExtension;
if (markupExtension is StaticResourceExtension)
{
StaticResourceExtension staticResourceExtension = markupExtension as StaticResourceExtension;
setter.Value = staticResourceExtension.ProvideValueInternal(eventArgs.ServiceProvider, true);
eventArgs.Handled = true;
return;
}
if (markupExtension is DynamicResourceExtension || markupExtension is BindingBase)
{
setter.Value = markupExtension;
eventArgs.Handled = true;
}
}
private static Style GetStyle(IServiceProvider service,
StaticResourceExtension resource)
{
var style = resource.ProvideValue(service) as Style;
if (style == null)
{
throw new InvalidOperationException(
string.Format(
"Could not find style with resource key {0}.",
resource.ResourceKey));
}
return style;
}
/// <summary>
/// Returns a style that merges all styles with the keys specified in the constructor.
/// </summary>
/// <param name="serviceProvider">The service provider for this markup extension.</param>
/// <returns>A style that merges all styles with the keys specified in the constructor.</returns>
public override object ProvideValue(IServiceProvider serviceProvider)
{
Style resultStyle = new Style();
foreach(string currentResourceKey in resourceKeys) {
object key = currentResourceKey;
if(currentResourceKey == ".") {
IProvideValueTarget service = (IProvideValueTarget)serviceProvider.GetService(typeof(IProvideValueTarget));
key = service.TargetObject.GetType();
}
Style currentStyle = new StaticResourceExtension(key).ProvideValue(serviceProvider) as Style;
if(currentStyle == null)
throw new InvalidOperationException("Could not find style with resource key " + currentResourceKey + ".");
resultStyle.Merge(currentStyle);
}
return resultStyle;
}
/// <summary>
/// Returns a style that merges all styles with the keys specified by ResourceKeys property.
/// </summary>
public override object ProvideValue( IServiceProvider serviceProvider )
{
Contract.RequiresNotNull( ResourceKeys, "ResourceKeys" );
var resourceKeys = ResourceKeys.Split( new char[] { ' ' }, StringSplitOptions.RemoveEmptyEntries );
Contract.Requires( resourceKeys.Length > 0, "No input resource keys specified." );
var resultStyle = new Style();
foreach( var currentResourceKey in resourceKeys )
{
var currentStyle = new StaticResourceExtension( currentResourceKey ).ProvideValue( serviceProvider ) as Style;
Contract.Invariant( currentStyle != null, "Could not find style with resource key " + currentResourceKey + "." );
AddTo( currentStyle, resultStyle );
}
return resultStyle;
}
/// <summary>
/// Convert the OptimizedStaticResource and StaticResource items into StaticResourceHolders.
/// A StaticResourceHolder is derived from StaticResourceExtension and is a MarkupExtension.
/// The differences is that it contain a DeferredResourceReference as its "PrefetchedValue".
/// DeferredResourceReferences hold the dictionary and the key of the resource. It is a
/// way of looking up the reference now (for later use) but not expanding the entry.
/// Also the dictionary has a reference back to the Deferrred Reference. If dictionary entry
/// is modifed the DeferredResourceReference is told and it will grab the old value.
/// StaticResourceHolder is a MarkupExtension and thus can be returned as a "Value" in the Node Stream.
///
/// Issue: If there is a ResourceDictionary inside the deferred entry, the entries inside that
/// RD will not be evaluated when resolving DeferredResourceReferences for a key in that same entry.
/// Thus the OptimizedStaticResource will either be erronously "not found" or may even map to some
/// incorrect value higher in the parse tree. So... In StaticResourceExtension.ProvideValue()
/// when we have a DeferredResourceReference we search the Deferred Content for a better
/// closer value before using the DeferredReference.
/// See StaticResourceExtension.FindTheResourceDictionary() for more details.
/// </summary>
// As a memory optimization this method is passed a staticResourceExtension instance to use as
// a worker when calling TryProvideValueInternal, which saves us having to allocate on every call.
private void SetOptimizedStaticResources(IList<object> staticResources, IServiceProvider serviceProvider, StaticResourceExtension staticResourceWorker)
{
Debug.Assert(staticResources != null && staticResources.Count > 0);
for (int i = 0; i < staticResources.Count; i++)
{
object keyValue = null;
// Process OptimizedStaticResource
var optimizedStaticResource = staticResources[i] as OptimizedStaticResource;
if (optimizedStaticResource != null)
{
keyValue = optimizedStaticResource.KeyValue;
}
else
{
// Process StaticResource (it holds the NodeList of the StaticResourceExtension)
var staticResource = staticResources[i] as StaticResource;
if (staticResource != null)
{
// find and evaluate the Key value of the SR in the SR's node stream.
keyValue = GetStaticResourceKeyValue(staticResource, serviceProvider);
Debug.Assert(keyValue != null, "Didn't find the ResourceKey property or x:PositionalParameters directive");
}
else
{
Debug.Assert(false, "StaticResources[] entry is not a StaticResource not OptimizedStaticResource");
continue; // other types of entries are not processed.
}
}
// Lookup the Key in the current context. [And return a Deferred Reference Holding SR to it]
// The current context is the Key table at the top of the Compiled Dictionary.
// We will look at keys above us in this dictionary and in the dictionaries in objects above
// us on the parse stack. And then look in the App and System Themems.
// This isn't always good enough. The Static Resource referenced inside the entry may refer
// to a entry in a sub-dictionary inside the deferred entry. There is other code, later
// when evaluating StaticResourceHolders, that does an search of the part that is missed here.
staticResourceWorker.ResourceKey = keyValue;
object obj = staticResourceWorker.TryProvideValueInternal(serviceProvider, true /*allowDeferredReference*/, true /* mustReturnDeferredResourceReference */);
Debug.Assert(obj is DeferredResourceReference);
staticResources[i] = new StaticResourceHolder(keyValue, obj as DeferredResourceReference);
}
}
private void SetKeys(IList<KeyRecord> keyCollection, IServiceProvider serviceProvider)
{
_numDefer = keyCollection.Count;
// Allocate one StaticResourceExtension object to use as a "worker".
StaticResourceExtension staticResourceWorker = new StaticResourceExtension();
// Use the array Count property to avoid range checking inside the loop
for (int i = 0; i < keyCollection.Count; i++)
{
KeyRecord keyRecord = keyCollection[i];
if (keyRecord != null)
{
object value = GetKeyValue(keyRecord, serviceProvider);
// Update the HasImplicitStyles flag
UpdateHasImplicitStyles(value);
if (keyRecord != null && keyRecord.HasStaticResources)
{
SetOptimizedStaticResources(keyRecord.StaticResources, serviceProvider, staticResourceWorker);
}
_baseDictionary.Add(value, keyRecord);
if (TraceResourceDictionary.IsEnabled)
{
TraceResourceDictionary.TraceActivityItem(
TraceResourceDictionary.SetKey,
this,
value);
}
}
else
{
throw new ArgumentException(SR.Get(SRID.KeyCollectionHasInvalidKey));
}
}
// Notify owners of the HasImplicitStyles flag value
// but there is not need to fire an invalidation.
NotifyOwners(new ResourcesChangeInfo(null, this));
}
internal virtual object GetExtensionValue(
IOptimizedMarkupExtension optimizedMarkupExtensionRecord,
string propertyName)
{
object innerExtensionValue = null;
object valueObject = null;
short memberId = optimizedMarkupExtensionRecord.ValueId;
short extensionTypeId = optimizedMarkupExtensionRecord.ExtensionTypeId;
switch (extensionTypeId)
{
case (short)KnownElements.StaticExtension:
valueObject = GetStaticExtensionValue(memberId);
break;
case (short)KnownElements.DynamicResourceExtension:
innerExtensionValue = GetInnerExtensionValue(optimizedMarkupExtensionRecord);
valueObject = new DynamicResourceExtension(innerExtensionValue);
break;
case (short)KnownElements.StaticResourceExtension:
innerExtensionValue = GetInnerExtensionValue(optimizedMarkupExtensionRecord);
valueObject = new StaticResourceExtension(innerExtensionValue);
break;
}
if (valueObject == null)
{
string valueTypeName = string.Empty;
switch (extensionTypeId)
{
case (short)KnownElements.StaticExtension:
valueTypeName = typeof(StaticExtension).FullName;
break;
case (short)KnownElements.DynamicResourceExtension:
valueTypeName = typeof(DynamicResourceExtension).FullName;
break;
case (short)KnownElements.StaticResourceExtension:
valueTypeName = typeof(StaticResourceExtension).FullName;
break;
}
ThrowException(SRID.ParserCannotConvertPropertyValue, propertyName, valueTypeName);
}
return valueObject;
}
// The end of the constructor parameter section has been reached. Create an
// instance of the object after finding the appropriate constructor and converting
// all of the objects held on the stack.
internal virtual void ReadConstructorParametersEndRecord()
{
Type elementType = ParentContext.ExpectedType;
short positiveElementTypeId = (short)-ParentContext.ExpectedTypeId;
object param = null;
ArrayList paramList = null;
int paramCount;
object instance = null;
bool foundInstance = false;
if( TraceMarkup.IsEnabled )
{
TraceMarkup.Trace( TraceEventType.Start,
TraceMarkup.CreateMarkupExtension,
elementType );
}
if (CurrentContext.CheckFlag(ReaderFlags.SingletonConstructorParam))
{
param = CurrentContext.ObjectData;
paramCount = 1;
// Fast code path for [static/dynamic] resource extensions &
// Type/Static/TemplateBinding extensions
switch (positiveElementTypeId)
{
case (short)KnownElements.TypeExtension:
// Note that this assumes that TypeExtension has a
// constructor with one param of type Type or String.
Type t = param as Type;
if (t != null)
{
instance = new TypeExtension(t);
}
else
{
Debug.Assert(param is String);
instance = new TypeExtension((String)param);
}
foundInstance = true;
break;
case (short)KnownElements.StaticResourceExtension:
// Note that this assumes that StaticResourceExtension has a
// constructor with one param of type object.
instance = new StaticResourceExtension(param);
foundInstance = true;
break;
case (short)KnownElements.DynamicResourceExtension:
// Note that this assumes that DynamicResourceExtension has a
// constructor with one param of type object.
instance = new DynamicResourceExtension(param);
foundInstance = true;
break;
case (short)KnownElements.StaticExtension:
// Note that this assumes that StaticExtension has a default
// constructor and one public property of type string and one
// internal property of type object for optimized member info.
instance = new StaticExtension((string)param);
foundInstance = true;
break;
case (short)KnownElements.TemplateBindingExtension:
// Note that this assumes that TemplateBindingExtension has a
// constructor with one param of type DependencyProperty. If a
// string is passed in due to there being other attributes like
// converter being set, then that needs to be converted now first.
DependencyProperty dp = param as DependencyProperty;
if (dp == null)
{
string paramString = param as string;
Type ownerType = ParserContext.TargetType;
Debug.Assert(paramString != null);
dp = XamlTypeMapper.ParsePropertyName(ParserContext,
paramString.Trim(),
ref ownerType);
if (dp == null)
{
ThrowException(SRID.ParserNoDPOnOwner, paramString, ownerType.FullName);
}
}
instance = new TemplateBindingExtension(dp);
foundInstance = true;
break;
}
}
else
{
paramList = (ArrayList)CurrentContext.ObjectData;
paramCount = paramList.Count;
}
if (!foundInstance)
{
// Find the constructor based on the number of parameters stored in paramList
XamlTypeMapper.ConstructorData data = XamlTypeMapper.GetConstructors(elementType);
ConstructorInfo[] infos = data.Constructors;
for (int i=0; i<infos.Length; i++)
{
ConstructorInfo info = infos[i];
ParameterInfo[] paramInfos = data.GetParameters(i);
if (paramInfos.Length == paramCount)
{
object[] paramArray = new object[paramInfos.Length];
if (paramCount == 1)
{
Debug.Assert(param != null && paramList == null, "Must have a single param");
ProcessConstructorParameter(paramInfos[0], param, ref paramArray[0]);
// Fast code path for other markupextensions
if (positiveElementTypeId == (short)KnownElements.RelativeSource)
{
// Note that this assumes that RelativeSource has a
// constructor with one param of type RelativeSourceMode.
instance = new System.Windows.Data.RelativeSource((System.Windows.Data.RelativeSourceMode)paramArray[0]);
foundInstance = true;
}
}
else
{
Debug.Assert(param == null && paramList != null, "Must have a paramList");
// Check each type and attempt to convert the paramList using
// the type converter associated with each parameter type.
for (int j=0; j<paramInfos.Length; j++)
{
ProcessConstructorParameter(paramInfos[j], paramList[j], ref paramArray[j]);
}
}
if (!foundInstance)
{
// If we make it to here we have a list of converted parameters, so
// invoke the constructor with that list.
#if !STRESS
try
{
#endif
instance = info.Invoke(paramArray);
foundInstance = true;
#if !STRESS
}
catch (Exception e)
{
if (CriticalExceptions.IsCriticalException(e) || e is XamlParseException)
{
throw;
}
TargetInvocationException tie = e as TargetInvocationException;
if( tie != null )
{
e = tie.InnerException;
}
ThrowExceptionWithLine(SR.Get(SRID.ParserFailedToCreateFromConstructor, info.DeclaringType.Name), e);
}
#endif
}
}
}
}
if (foundInstance)
{
ParentContext.ObjectData = instance;
ParentContext.ExpectedType = null;
PopContext();
}
else
{
// If we get to here, then no matching constructor was found, so complain
ThrowException(SRID.ParserBadConstructorParams, elementType.Name, paramCount.ToString(CultureInfo.CurrentCulture));
}
if( TraceMarkup.IsEnabled )
{
TraceMarkup.Trace( TraceEventType.Stop,
TraceMarkup.CreateMarkupExtension,
elementType,
instance );
}
}
