private ContainerVisual GetHeaderFooterVisualFromDataTemplate(FrameworkTemplate template, Rect container)
{
if (template == null)
{
return null;
}
var doc = Source as PrintableDocument;
var content = template.LoadContent() as FrameworkElement;
content.DataContext = doc.DataContext;
var width = _definition.PageSize.Width - _definition.Margins.Left - _definition.Margins.Right;
content.Measure(_definition.PageSize);
content.Arrange(new Rect(container.X, container.Y, width, content.DesiredSize.Height));
content.UpdateLayout();
var visual = new ContainerVisual();
visual.Children.Add(content);
return visual;
}
private Size GetModelContentSize(object dataModel, FrameworkTemplate modelTemplate, Size availableSize)
{
FrameworkElement content = null;
if (modelTemplate == null)
{
return Size.Empty;
}
content = modelTemplate.LoadContent() as FrameworkElement;
if (content == null)
{
return Size.Empty;
}
content.DataContext = dataModel;
content.Measure(availableSize);
return content.DesiredSize;
}
//+----------------------------------------------------------------------------------
//
// ApplyTemplateContent
//
// Instantiate the content of the template (either from FEFs or from Baml).
// This is done for every element to which this template is attached.
//
//+----------------------------------------------------------------------------------
#region InstantiateSubTree
//[CodeAnalysis("AptcaMethodsShouldOnlyCallAptcaMethods")] //Tracking Bug: 29647
internal static bool ApplyTemplateContent(
UncommonField<HybridDictionary[]> dataField,
DependencyObject container,
FrameworkElementFactory templateRoot,
int lastChildIndex,
HybridDictionary childIndexFromChildID,
FrameworkTemplate frameworkTemplate)
{
Debug.Assert(frameworkTemplate != null );
bool visualsCreated = false;
FrameworkElement feContainer = container as FrameworkElement;
// Is this a FEF-style template?
if (templateRoot != null)
{
// Yes, we'll instantiate from a FEF tree.
EventTrace.EasyTraceEvent(EventTrace.Keyword.KeywordXamlBaml, EventTrace.Level.Verbose, EventTrace.Event.WClientParseInstVisTreeBegin);
CheckForCircularReferencesInTemplateTree(container, frameworkTemplate );
// Container is considered ChildIndex '0' (Self), but,
// Container.ChildIndex isn't set
List<DependencyObject> affectedChildren = new List<DependencyObject>(lastChildIndex);
// Assign affectedChildren to container
TemplatedFeChildrenField.SetValue(container, affectedChildren);
// When building the template children chain, we keep a chain of
// nodes that don't need to be in the chain for property invalidation
// or lookup purposes. (And hence not assigned a TemplateChildIndex)
// We only need them in order to clean up their _templatedParent
// references (see FrameworkElement.ClearTemplateChain)
List<DependencyObject> noChildIndexChildren = null;
// Instantiate template
// Setup container's reference to first child in chain
// and add to tree
DependencyObject treeRoot = templateRoot.InstantiateTree(
dataField,
container,
container,
affectedChildren,
ref noChildIndexChildren,
ref frameworkTemplate.ResourceDependents);
Debug.Assert(treeRoot is FrameworkElement || treeRoot is FrameworkContentElement,
"Root node of tree must be a FrameworkElement or FrameworkContentElement. This should have been caught by set_VisualTree" );
// From childFirst to childLast is the chain of child nodes with
// childIndex. Append that chain with the chain of child nodes
// with no childIndex assigned.
if( noChildIndexChildren != null )
{
affectedChildren.AddRange(noChildIndexChildren);
}
visualsCreated = true;
if (feContainer != null && EventTrace.IsEnabled(EventTrace.Keyword.KeywordXamlBaml, EventTrace.Level.Verbose))
{
string label = feContainer.Name;
if (label == null || label.Length == 0)
label = container.GetHashCode().ToString(System.Globalization.CultureInfo.InvariantCulture);
EventTrace.EventProvider.TraceEvent(EventTrace.Event.WClientParseInstVisTreeEnd, EventTrace.Keyword.KeywordXamlBaml, EventTrace.Level.Verbose,
String.Format(System.Globalization.CultureInfo.InvariantCulture, "Style.InstantiateSubTree for {0} {1}", container.GetType().Name, label));
}
}
// It's not a FEF-style template, is it a non-empty optimized one?
else if (frameworkTemplate != null && frameworkTemplate.HasXamlNodeContent)
{
// Yes, create from the optimized template content.
EventTrace.EasyTraceEvent(EventTrace.Keyword.KeywordXamlBaml, EventTrace.Level.Verbose, EventTrace.Event.WClientParseInstVisTreeBegin);
CheckForCircularReferencesInTemplateTree(container, frameworkTemplate );
// Container is considered ChildIndex '0' (Self), but,
// Container.ChildIndex isn't set
List<DependencyObject> affectedChildren = new List<DependencyObject>(lastChildIndex);
// Assign affectedChildren to container
TemplatedFeChildrenField.SetValue(container, affectedChildren);
DependencyObject treeRoot;
// Load the content
treeRoot = frameworkTemplate.LoadContent( container, affectedChildren);
Debug.Assert(treeRoot == null || treeRoot is FrameworkElement || treeRoot is FrameworkContentElement,
"Root node of tree must be a FrameworkElement or FrameworkContentElement. This should have been caught by set_VisualTree" );
visualsCreated = true;
if (feContainer != null && EventTrace.IsEnabled(EventTrace.Keyword.KeywordXamlBaml, EventTrace.Level.Verbose))
{
string label = feContainer.Name;
if (label == null || label.Length == 0)
label = container.GetHashCode().ToString(System.Globalization.CultureInfo.InvariantCulture);
EventTrace.EventProvider.TraceEvent(EventTrace.Event.WClientParseInstVisTreeEnd, EventTrace.Keyword.KeywordXamlBaml, EventTrace.Level.Verbose,
String.Format(System.Globalization.CultureInfo.InvariantCulture, "Style.InstantiateSubTree for {0} {1}", container.GetType().Name, label));
}
}
// No template was supplied. Allow subclasses to provide the template.
// This is currently only implemented for FrameworkElement's.
else
{
if (feContainer != null)
{
// This template will not be driven by the Style in any way.
// Rather, it will be built and initialized by the callee
// CALLBACK
#if DEBUG
Debug.Assert( feContainer._buildVisualTreeVerification == VerificationState.WaitingForBuildVisualTree,
"The BuildVisualTree override has triggered another call to itself. This is not good - something between the two Style.InstantiateSubTree calls on the stack is doing A Very Bad Thing.");
feContainer._buildVisualTreeVerification = VerificationState.WaitingForAddCustomTemplateRoot;
bool exceptionThrown = true;
try
{
#endif
Debug.Assert(frameworkTemplate != null, "Only FrameworkTemplate has the ability to build a VisualTree by this means");
visualsCreated = frameworkTemplate.BuildVisualTree(feContainer);
#if DEBUG
exceptionThrown = false;
}
finally
{
if (!exceptionThrown) // results are unreliable if an exception was thrown
{
if( visualsCreated )
{
Debug.Assert( feContainer._buildVisualTreeVerification == VerificationState.WaitingForBuildVisualTreeCompletion,
"A derived class overriding BuildVisualTree must call AddCustomTemplateRoot to attach its custom subtree before exiting.");
}
else
{
Debug.Assert( feContainer._buildVisualTreeVerification == VerificationState.WaitingForAddCustomTemplateRoot,
"If a derived class overriding BuildVisualTree has called AddCustomTemplateRoot to attach its custom subtree, its BuildVisualTree must return true to indicate that it has done so.");
}
}
// All done building this visual tree, stand by for the next one.
feContainer._buildVisualTreeVerification = VerificationState.WaitingForBuildVisualTree;
}
#endif
}
}
return visualsCreated;
}
