internal static FrameworkObject GetContainingFrameworkElement(DependencyObject current)
{
var fo = new FrameworkObject(current);
while (!fo.IsValid && fo.DependencyObject != null)
{
// The current object is neither a FrameworkElement nor a
// FrameworkContentElement. We will now walk the "core"
// tree looking for one.
Visual visual;
Visual3D visual3D;
ContentElement ce;
if ((visual = fo.DependencyObject as Visual) != null)
{
fo.Reset(VisualTreeHelper.GetParent(visual));
}
else if ((ce = fo.DependencyObject as ContentElement) != null)
{
fo.Reset(ContentOperations.GetParent(ce));
}
else if ((visual3D = fo.DependencyObject as Visual3D) != null)
{
fo.Reset(VisualTreeHelper.GetParent(visual3D));
}
else
{
// The parent could be an application.
fo.Reset(null);
}
}
return(fo);
}
/// <summary>
/// This method is invoked when the Child property changes.
/// http://referencesource.microsoft.com/#PresentationFramework/src/Framework/System/Windows/Controls/ContentControl.cs,262
/// </summary>
/// <param name="oldChild">The old value of the Child property.</param>
/// <param name="newChild">The new value of the Child property.</param>
protected virtual void OnChildChanged(BaseBox oldChild, BaseBox newChild)
{
this.RemoveLogicalChild(oldChild);
if (newChild != null)
{
var logicalParent = LogicalTreeHelper.GetParent(newChild);
if (logicalParent != null)
{
if (this.TemplatedParent != null && FrameworkObject.IsEffectiveAncestor(logicalParent, this))
{
// In the case that this SpinnerDecorator belongs in a parent template
// and represents the content of a parent, we do not wish to change
// the logical ancestry of the content.
return;
}
else
{
// If the new content was previously hooked up to the logical
// tree then we sever it from the old parent.
var message = "Cannot add child that already belongs to a parent.\r\n" +
"Fixing this requires more source diving than I feel like right now.\r\n" +
"Waiting to see if it becomes a problem";
throw new NotSupportedException(message);
//// LogicalTreeHelper.RemoveLogicalChild(logicalParent, newChild);
}
}
}
// Add the new content child
this.AddLogicalChild(newChild);
}
//// internal bool ThisHasLoadedChangeEventHandler
//// {
//// get
//// {
//// if (this.IsFE)
//// {
//// return this._fe.ThisHasLoadedChangeEventHandler;
//// }
//// else if (this.IsFCE)
//// {
//// return this._fce.ThisHasLoadedChangeEventHandler;
//// }
//// else
//// {
//// return false;
//// }
//// }
//// }
//// internal bool SubtreeHasLoadedChangeHandler
//// {
//// get
//// {
//// if (this.IsFE)
//// {
//// return this._fe.SubtreeHasLoadedChangeHandler;
//// }
//// else if (this.IsFCE)
//// {
//// return this._fce.SubtreeHasLoadedChangeHandler;
//// }
//// else
//// {
//// return false;
//// }
//// }
//// set
//// {
//// if (this.IsFE)
//// {
//// this._fe.SubtreeHasLoadedChangeHandler = value;
//// }
//// else if (this.IsFCE)
//// {
//// this._fce.SubtreeHasLoadedChangeHandler = value;
//// }
//// }
//// }
//// internal InheritanceBehavior InheritanceBehavior
//// {
//// get
//// {
//// if (this.IsFE)
//// {
//// return this._fe.InheritanceBehavior;
//// }
//// else if (this.IsFCE)
//// {
//// return this._fce.InheritanceBehavior;
//// }
//// else
//// {
//// return InheritanceBehavior.Default;
//// }
//// }
//// }
//// internal bool StoresParentTemplateValues
//// {
//// get
//// {
//// if (this.IsFE)
//// {
//// return this._fe.StoresParentTemplateValues;
//// }
//// else if (this.IsFCE)
//// {
//// return this._fce.StoresParentTemplateValues;
//// }
//// else
//// {
//// return false;
//// }
//// }
//// set
//// {
//// if (this.IsFE)
//// {
//// this._fe.StoresParentTemplateValues = value;
//// }
//// else if (this.IsFCE)
//// {
//// this._fce.StoresParentTemplateValues = value;
//// }
//// }
//// }
//// internal bool HasResourceReference
//// {
//// /* not used (yet)
//// get
//// {
//// if (IsFE)
//// {
//// return _fe.HasResourceReference;
//// }
//// else if (IsFCE)
//// {
//// return _fce.HasResourceReference;
//// }
//// else
//// {
//// return false;
//// }
//// }
//// */
//// set
//// {
//// if (this.IsFE)
//// {
//// this._fe.HasResourceReference = value;
//// }
//// else if (this.IsFCE)
//// {
//// this._fce.HasResourceReference = value;
//// }
//// }
//// }
/* not used (yet)
* internal bool HasStyleChanged
* {
* get
* {
* if (IsFE)
* {
* return _fe.HasStyleChanged;
* }
* else if (IsFCE)
* {
* return _fce.HasStyleChanged;
* }
* else
* {
* return false;
* }
* }
* set
* {
* if (IsFE)
* {
* _fe.HasStyleChanged = value;
* }
* else if (IsFCE)
* {
* _fce.HasStyleChanged = value;
* }
* }
* }
*/
//// internal bool HasTemplateChanged
//// {
//// /* not used (yet)
//// get
//// {
//// if (IsFE)
//// {
//// return _fe.HasTemplateChanged;
//// }
//// else
//// {
//// return false;
//// }
//// }
//// */
//// set
//// {
//// if (this.IsFE)
//// {
//// this._fe.HasTemplateChanged = value;
//// }
//// }
//// }
//// Says if there are any implicit styles in the ancestry
//// internal bool ShouldLookupImplicitStyles
//// {
//// get
//// {
//// if (this.IsFE)
//// {
//// return this._fe.ShouldLookupImplicitStyles;
//// }
//// else if (this.IsFCE)
//// {
//// return this._fce.ShouldLookupImplicitStyles;
//// }
//// else
//// {
//// return false;
//// }
//// }
//// set
//// {
//// if (this.IsFE)
//// {
//// this._fe.ShouldLookupImplicitStyles = value;
//// }
//// else if (this.IsFCE)
//// {
//// this._fce.ShouldLookupImplicitStyles = value;
//// }
//// }
//// }
internal static bool IsEffectiveAncestor(DependencyObject d1, DependencyObject d2)
{
for (var fo = new FrameworkObject(d2);
fo.DependencyObject != null;
fo.Reset(fo.EffectiveParent))
{
if (ReferenceEquals(fo.DependencyObject, d1))
{
return(true);
}
}
return(false);
}
internal static FrameworkObject GetContainingFrameworkElement(DependencyObject current)
{
FrameworkObject fo = new FrameworkObject(current);
while (!fo.IsValid && fo.DependencyObject != null)
{
// The current object is neither a FrameworkElement nor a
// FrameworkContentElement. We will now walk the "core"
// tree looking for one.
Visual visual;
Visual3D visual3D;
ContentElement ce;
if ((visual = fo.DependencyObject as Visual) != null)
{
fo.Reset(VisualTreeHelper.GetParent(visual));
}
else if ((ce = fo.DependencyObject as ContentElement) != null)
{
fo.Reset(ContentOperations.GetParent(ce));
}
else if ((visual3D = fo.DependencyObject as Visual3D) != null)
{
fo.Reset(VisualTreeHelper.GetParent(visual3D));
}
else
{
// The parent could be an application.
fo.Reset(null);
}
}
return fo;
}
//// internal bool ThisHasLoadedChangeEventHandler
//// {
//// get
//// {
//// if (this.IsFE)
//// {
//// return this._fe.ThisHasLoadedChangeEventHandler;
//// }
//// else if (this.IsFCE)
//// {
//// return this._fce.ThisHasLoadedChangeEventHandler;
//// }
//// else
//// {
//// return false;
//// }
//// }
//// }
//// internal bool SubtreeHasLoadedChangeHandler
//// {
//// get
//// {
//// if (this.IsFE)
//// {
//// return this._fe.SubtreeHasLoadedChangeHandler;
//// }
//// else if (this.IsFCE)
//// {
//// return this._fce.SubtreeHasLoadedChangeHandler;
//// }
//// else
//// {
//// return false;
//// }
//// }
//// set
//// {
//// if (this.IsFE)
//// {
//// this._fe.SubtreeHasLoadedChangeHandler = value;
//// }
//// else if (this.IsFCE)
//// {
//// this._fce.SubtreeHasLoadedChangeHandler = value;
//// }
//// }
//// }
//// internal InheritanceBehavior InheritanceBehavior
//// {
//// get
//// {
//// if (this.IsFE)
//// {
//// return this._fe.InheritanceBehavior;
//// }
//// else if (this.IsFCE)
//// {
//// return this._fce.InheritanceBehavior;
//// }
//// else
//// {
//// return InheritanceBehavior.Default;
//// }
//// }
//// }
//// internal bool StoresParentTemplateValues
//// {
//// get
//// {
//// if (this.IsFE)
//// {
//// return this._fe.StoresParentTemplateValues;
//// }
//// else if (this.IsFCE)
//// {
//// return this._fce.StoresParentTemplateValues;
//// }
//// else
//// {
//// return false;
//// }
//// }
//// set
//// {
//// if (this.IsFE)
//// {
//// this._fe.StoresParentTemplateValues = value;
//// }
//// else if (this.IsFCE)
//// {
//// this._fce.StoresParentTemplateValues = value;
//// }
//// }
//// }
//// internal bool HasResourceReference
//// {
//// /* not used (yet)
//// get
//// {
//// if (IsFE)
//// {
//// return _fe.HasResourceReference;
//// }
//// else if (IsFCE)
//// {
//// return _fce.HasResourceReference;
//// }
//// else
//// {
//// return false;
//// }
//// }
//// */
//// set
//// {
//// if (this.IsFE)
//// {
//// this._fe.HasResourceReference = value;
//// }
//// else if (this.IsFCE)
//// {
//// this._fce.HasResourceReference = value;
//// }
//// }
//// }
/* not used (yet)
internal bool HasStyleChanged
{
get
{
if (IsFE)
{
return _fe.HasStyleChanged;
}
else if (IsFCE)
{
return _fce.HasStyleChanged;
}
else
{
return false;
}
}
set
{
if (IsFE)
{
_fe.HasStyleChanged = value;
}
else if (IsFCE)
{
_fce.HasStyleChanged = value;
}
}
}
*/
//// internal bool HasTemplateChanged
//// {
//// /* not used (yet)
//// get
//// {
//// if (IsFE)
//// {
//// return _fe.HasTemplateChanged;
//// }
//// else
//// {
//// return false;
//// }
//// }
//// */
//// set
//// {
//// if (this.IsFE)
//// {
//// this._fe.HasTemplateChanged = value;
//// }
//// }
//// }
//// Says if there are any implicit styles in the ancestry
//// internal bool ShouldLookupImplicitStyles
//// {
//// get
//// {
//// if (this.IsFE)
//// {
//// return this._fe.ShouldLookupImplicitStyles;
//// }
//// else if (this.IsFCE)
//// {
//// return this._fce.ShouldLookupImplicitStyles;
//// }
//// else
//// {
//// return false;
//// }
//// }
//// set
//// {
//// if (this.IsFE)
//// {
//// this._fe.ShouldLookupImplicitStyles = value;
//// }
//// else if (this.IsFCE)
//// {
//// this._fce.ShouldLookupImplicitStyles = value;
//// }
//// }
//// }
internal static bool IsEffectiveAncestor(DependencyObject d1, DependencyObject d2)
{
for (FrameworkObject fo = new FrameworkObject(d2);
fo.DependencyObject != null;
fo.Reset(fo.EffectiveParent))
{
if (ReferenceEquals(fo.DependencyObject, d1))
{
return true;
}
}
return false;
}
