// The ordering of how things are created and which methods are called are ABSOLUTELY critical
// Getting this order slightly off will result in several issues that are very hard to debug.
//
// The order must be:
// Register name to the TemplateNameScope (Either the real name specified by x:Name or
// RuntimeNameProperty or a fake name that we have to generate to call
// RegisterName. This is CRUCIAL since RegisterName sets the TemplatedParent
// and the TemplateChildIndex on the object
// If we're dealing with the root, wire the object to the parent (via FE.TemplateChild
// if we're dealing with an FE as the container or using FEF if it's not an FE)
// Invalidate properties on the object
private DependencyObject LoadOptimizedTemplateContent(DependencyObject container,
IComponentConnector componentConnector,
IStyleConnector styleConnector, List<DependencyObject> affectedChildren, UncommonField<Hashtable> templatedNonFeChildrenField)
{
if (Names == null)
{
Names = new XamlContextStack<Frame>(() => new Frame());
}
DependencyObject rootObject = null;
if (TraceMarkup.IsEnabled)
{
TraceMarkup.Trace(TraceEventType.Start, TraceMarkup.Load);
}
FrameworkElement feContainer = container as FrameworkElement;
bool isTemplatedParentAnFE = feContainer != null;
TemplateNameScope nameScope = new TemplateNameScope(container, affectedChildren, this);
XamlObjectWriterSettings settings = System.Windows.Markup.XamlReader.CreateObjectWriterSettings(_templateHolder.ObjectWriterParentSettings);
settings.ExternalNameScope = nameScope;
settings.RegisterNamesOnExternalNamescope = true;
IEnumerator<String> nameEnumerator = ChildNames.GetEnumerator();
// Delegate for AfterBeginInit event
settings.AfterBeginInitHandler =
delegate(object sender, System.Xaml.XamlObjectEventArgs args)
{
HandleAfterBeginInit(args.Instance, ref rootObject, container, feContainer, nameScope, nameEnumerator);
if (XamlSourceInfoHelper.IsXamlSourceInfoEnabled)
{
XamlSourceInfoHelper.SetXamlSourceInfo(args.Instance, args, null);
}
};
// Delegate for BeforeProperties event
settings.BeforePropertiesHandler =
delegate(object sender, System.Xaml.XamlObjectEventArgs args)
{
HandleBeforeProperties(args.Instance, ref rootObject, container, feContainer, nameScope);
};
// Delegate for XamlSetValue event
settings.XamlSetValueHandler =
delegate(object sender, System.Windows.Markup.XamlSetValueEventArgs setArgs)
{
setArgs.Handled = ReceivePropertySet(sender, setArgs.Member, setArgs.Value, container);
};
XamlObjectWriter objectWriter = _templateHolder.ObjectWriterFactory.GetXamlObjectWriter(settings);
try
{
LoadTemplateXaml(objectWriter);
}
finally
{
if (TraceMarkup.IsEnabled)
{
TraceMarkup.Trace(TraceEventType.Stop, TraceMarkup.Load, rootObject);
}
}
return rootObject;
}
// Instantiate a tree. This is a recursive routine that will build the
// subtree via calls to itself. The root node being instantiated will
// have identical references for the "container" and "parent" parameters.
// The "affectedChildren" and "noChildIndexChildren" parameters refer to the children
// chain for the "container" object. This chain will have all the
// children - not just the immediate children. The node being
// instantiated here will be added to this chain.
// The tree is instantiated in a depth-first traversal, so children nodes
// are added to the chain in depth-first order as well.
//[CodeAnalysis("AptcaMethodsShouldOnlyCallAptcaMethods")] //Tracking Bug: 29647
internal DependencyObject InstantiateTree(
UncommonField<HybridDictionary[]> dataField,
DependencyObject container,
DependencyObject parent,
List<DependencyObject> affectedChildren,
ref List<DependencyObject> noChildIndexChildren,
ref FrugalStructList<ChildPropertyDependent> resourceDependents)
{
EventTrace.EasyTraceEvent(EventTrace.Keyword.KeywordXamlBaml, EventTrace.Level.Verbose, EventTrace.Event.WClientParseFefCrInstBegin);
FrameworkElement containerAsFE = container as FrameworkElement;
bool isContainerAnFE = containerAsFE != null;
DependencyObject treeNode = null;
// If we have text, just add it to the parent. Otherwise create the child
// subtree
if (_text != null)
{
// of FrameworkContentElement parent. This is the logical equivalent
// to what happens when adding a child to a visual collection.
IAddChild addChildParent = parent as IAddChild;
if (addChildParent == null)
{
throw new InvalidOperationException(SR.Get(SRID.TypeMustImplementIAddChild,
parent.GetType().Name));
}
else
{
addChildParent.AddText(_text);
}
}
else
{
// Factory create instance
treeNode = CreateDependencyObject();
EventTrace.EasyTraceEvent(EventTrace.Keyword.KeywordXamlBaml, EventTrace.Level.Verbose, EventTrace.Event.WClientParseFefCrInstEnd);
// The tree node is either a FrameworkElement or a FrameworkContentElement.
// we'll deal with one or the other...
FrameworkObject treeNodeFO = new FrameworkObject(treeNode);
Visual3D treeNodeVisual3D = null;
bool treeNodeIsVisual3D = false;
if (!treeNodeFO.IsValid)
{
// If it's neither of those, we have special support for Visual3D
treeNodeVisual3D = treeNode as Visual3D;
if (treeNodeVisual3D != null)
treeNodeIsVisual3D = true;
}
Debug.Assert( treeNodeFO.IsValid || (treeNodeVisual3D != null),
"We should not be trying to instantiate a node that is neither FrameworkElement nor FrameworkContentElement. A type check should have been done when Type is set");
// And here's the bool we'll use to make the decision.
bool treeNodeIsFE = treeNodeFO.IsFE;
// Handle FE/FCE-specific optimizations
if (!treeNodeIsVisual3D)
{
// Postpone "Initialized" event
NewNodeBeginInit( treeNodeIsFE, treeNodeFO.FE, treeNodeFO.FCE );
// Set the resource reference flags
if (StyleHelper.HasResourceDependentsForChild(_childIndex, ref resourceDependents))
{
treeNodeFO.HasResourceReference = true;
}
// Update the two chains that tracks all the nodes created
// from all the FrameworkElementFactory of this Style.
UpdateChildChains( _childName, _childIndex,
treeNodeIsFE, treeNodeFO.FE, treeNodeFO.FCE,
affectedChildren, ref noChildIndexChildren );
// All FrameworkElementFactory-created elements point to the object
// whose Style.VisualTree definition caused all this to occur
NewNodeStyledParentProperty( container, isContainerAnFE, treeNodeIsFE, treeNodeFO.FE, treeNodeFO.FCE );
// Initialize the per-instance data for the new element. This
// needs to be done before any properties are invalidated.
if (_childIndex != -1)
{
Debug.Assert( _frameworkTemplate != null );
StyleHelper.CreateInstanceDataForChild(dataField, container, treeNode, _childIndex,
_frameworkTemplate.HasInstanceValues, ref _frameworkTemplate.ChildRecordFromChildIndex);
}
// If this element needs to know about the Loaded or Unloaded events, set the optimization
// bit in the element
if (HasLoadedChangeHandler)
{
BroadcastEventHelper.AddHasLoadedChangeHandlerFlagInAncestry(treeNode);
}
}
else
{
if (_childName != null)
{
// Add this instance to the child index chain so that it may
// be tracked by the style
affectedChildren.Add(treeNode);
}
else
{
// Child nodes with no _childID (hence no _childIndex) are
// tracked on a separate chain that will be appended to the
// main chain for cleanup purposes.
if (noChildIndexChildren == null)
{
noChildIndexChildren = new List<DependencyObject>(4);
}
noChildIndexChildren.Add(treeNode);
}
}
// New node is initialized, build tree top down
// (Node added before children of node)
if (container == parent)
{
// Set the NameScope on the root of the Template generated tree
TemplateNameScope templateNameScope = new TemplateNameScope(container);
NameScope.SetNameScope(treeNode, templateNameScope);
// This is the root of the tree
if (isContainerAnFE)
{
// The root is added to the Visual tree (not logical) for the
// case of FrameworkElement parents
containerAsFE.TemplateChild = treeNodeFO.FE;
}
else
{
// The root is added to the logical tree for the case
// of FrameworkContentElement parent. This is the logical equivalent
// to what happens when adding a child to a visual collection.
AddNodeToLogicalTree( (FrameworkContentElement)parent, _type,
treeNodeIsFE, treeNodeFO.FE, treeNodeFO.FCE );
}
}
else
{
// Call parent IAddChild to add treeNodeFO
AddNodeToParent( parent, treeNodeFO );
}
// Either set properties or invalidate them, depending on the type
if (!treeNodeIsVisual3D)
{
// For non-3D content, we need to invalidate any properties that
// came from FrameworkElementFactory.SetValue or VisulaTrigger.SetValue
// so that they can get picked up.
Debug.Assert( _frameworkTemplate != null );
StyleHelper.InvalidatePropertiesOnTemplateNode(
container,
treeNodeFO,
_childIndex,
ref _frameworkTemplate.ChildRecordFromChildIndex,
false /*isDetach*/,
this);
}
else
{
// For 3D, which doesn't understand templates, we set the properties directly
// onto the newly-instantiated element.
for (int i = 0; i < PropertyValues.Count; i++)
{
if (PropertyValues[i].ValueType == PropertyValueType.Set)
{
// Get the value out of the table.
object o = PropertyValues[i].ValueInternal;
// If it's a freezable that can't be frozen, it's probably not sharable,
// so we make a copy of it.
Freezable freezableValue = o as Freezable;
if (freezableValue != null && !freezableValue.CanFreeze)
{
o = freezableValue.Clone();
}
// Or, if it's a markup extension, get the value
// to set on this property from the MarkupExtension itself.
MarkupExtension me = o as MarkupExtension;
if (me != null)
{
ProvideValueServiceProvider serviceProvider = new ProvideValueServiceProvider();
serviceProvider.SetData( treeNodeVisual3D, PropertyValues[i].Property );
o = me.ProvideValue( serviceProvider );
}
// Finally, set the value onto the object.
treeNodeVisual3D.SetValue(PropertyValues[i].Property, o);
}
else
{
// We don't support resource references, triggers, etc within the 3D content
throw new NotSupportedException(SR.Get(SRID.Template3DValueOnly, PropertyValues[i].Property) );
}
}
}
// Build child tree from factories
FrameworkElementFactory childFactory = _firstChild;
while (childFactory != null)
{
childFactory.InstantiateTree(
dataField,
container,
treeNode,
affectedChildren,
ref noChildIndexChildren,
ref resourceDependents);
childFactory = childFactory._nextSibling;
}
if (!treeNodeIsVisual3D)
{
// Fire "Initialized" event
NewNodeEndInit( treeNodeIsFE, treeNodeFO.FE, treeNodeFO.FCE );
}
}
return treeNode;
}
private void HandleAfterBeginInit(object createdObject,
ref DependencyObject rootObject,
DependencyObject container,
FrameworkElement feContainer,
TemplateNameScope nameScope,
IEnumerator<String> nameEnumerator)
{
// We need to wire names for all FEs and FCEs. We do this as soon as the object is
// initalized since it needs to happen before we assign any properties or wire to the parent
if (!Names.CurrentFrame.InsideNameScope &&
(createdObject is FrameworkElement || createdObject is FrameworkContentElement))
{
nameEnumerator.MoveNext();
nameScope.RegisterNameInternal(nameEnumerator.Current, createdObject);
}
Names.CurrentFrame.Instance = createdObject;
}
// Token: 0x06000691 RID: 1681 RVA: 0x00014908 File Offset: 0x00012B08
internal DependencyObject InstantiateTree(UncommonField <HybridDictionary[]> dataField, DependencyObject container, DependencyObject parent, List <DependencyObject> affectedChildren, ref List <DependencyObject> noChildIndexChildren, ref FrugalStructList <ChildPropertyDependent> resourceDependents)
{
EventTrace.EasyTraceEvent(EventTrace.Keyword.KeywordXamlBaml, EventTrace.Level.Verbose, EventTrace.Event.WClientParseFefCrInstBegin);
FrameworkElement frameworkElement = container as FrameworkElement;
bool flag = frameworkElement != null;
DependencyObject dependencyObject = null;
if (this._text != null)
{
IAddChild addChild = parent as IAddChild;
if (addChild == null)
{
throw new InvalidOperationException(SR.Get("TypeMustImplementIAddChild", new object[]
{
parent.GetType().Name
}));
}
addChild.AddText(this._text);
}
else
{
dependencyObject = this.CreateDependencyObject();
EventTrace.EasyTraceEvent(EventTrace.Keyword.KeywordXamlBaml, EventTrace.Level.Verbose, EventTrace.Event.WClientParseFefCrInstEnd);
FrameworkObject frameworkObject = new FrameworkObject(dependencyObject);
Visual3D visual3D = null;
bool flag2 = false;
if (!frameworkObject.IsValid)
{
visual3D = (dependencyObject as Visual3D);
if (visual3D != null)
{
flag2 = true;
}
}
bool isFE = frameworkObject.IsFE;
if (!flag2)
{
FrameworkElementFactory.NewNodeBeginInit(isFE, frameworkObject.FE, frameworkObject.FCE);
if (StyleHelper.HasResourceDependentsForChild(this._childIndex, ref resourceDependents))
{
frameworkObject.HasResourceReference = true;
}
FrameworkElementFactory.UpdateChildChains(this._childName, this._childIndex, isFE, frameworkObject.FE, frameworkObject.FCE, affectedChildren, ref noChildIndexChildren);
FrameworkElementFactory.NewNodeStyledParentProperty(container, flag, isFE, frameworkObject.FE, frameworkObject.FCE);
if (this._childIndex != -1)
{
StyleHelper.CreateInstanceDataForChild(dataField, container, dependencyObject, this._childIndex, this._frameworkTemplate.HasInstanceValues, ref this._frameworkTemplate.ChildRecordFromChildIndex);
}
if (this.HasLoadedChangeHandler)
{
BroadcastEventHelper.AddHasLoadedChangeHandlerFlagInAncestry(dependencyObject);
}
}
else if (this._childName != null)
{
affectedChildren.Add(dependencyObject);
}
else
{
if (noChildIndexChildren == null)
{
noChildIndexChildren = new List <DependencyObject>(4);
}
noChildIndexChildren.Add(dependencyObject);
}
if (container == parent)
{
TemplateNameScope value = new TemplateNameScope(container);
NameScope.SetNameScope(dependencyObject, value);
if (flag)
{
frameworkElement.TemplateChild = frameworkObject.FE;
}
else
{
FrameworkElementFactory.AddNodeToLogicalTree((FrameworkContentElement)parent, this._type, isFE, frameworkObject.FE, frameworkObject.FCE);
}
}
else
{
this.AddNodeToParent(parent, frameworkObject);
}
if (!flag2)
{
StyleHelper.InvalidatePropertiesOnTemplateNode(container, frameworkObject, this._childIndex, ref this._frameworkTemplate.ChildRecordFromChildIndex, false, this);
}
else
{
for (int i = 0; i < this.PropertyValues.Count; i++)
{
if (this.PropertyValues[i].ValueType != PropertyValueType.Set)
{
throw new NotSupportedException(SR.Get("Template3DValueOnly", new object[]
{
this.PropertyValues[i].Property
}));
}
object obj = this.PropertyValues[i].ValueInternal;
Freezable freezable = obj as Freezable;
if (freezable != null && !freezable.CanFreeze)
{
obj = freezable.Clone();
}
MarkupExtension markupExtension = obj as MarkupExtension;
if (markupExtension != null)
{
ProvideValueServiceProvider provideValueServiceProvider = new ProvideValueServiceProvider();
provideValueServiceProvider.SetData(visual3D, this.PropertyValues[i].Property);
obj = markupExtension.ProvideValue(provideValueServiceProvider);
}
visual3D.SetValue(this.PropertyValues[i].Property, obj);
}
}
for (FrameworkElementFactory frameworkElementFactory = this._firstChild; frameworkElementFactory != null; frameworkElementFactory = frameworkElementFactory._nextSibling)
{
frameworkElementFactory.InstantiateTree(dataField, container, dependencyObject, affectedChildren, ref noChildIndexChildren, ref resourceDependents);
}
if (!flag2)
{
FrameworkElementFactory.NewNodeEndInit(isFE, frameworkObject.FE, frameworkObject.FCE);
}
}
return(dependencyObject);
}
