private void LoadState(object node)
{
UIElement uielement = node as UIElement;
if (uielement == null)
{
return;
}
int persistId = uielement.PersistId;
if (persistId != 0)
{
if (this.HasSubStreams(persistId))
{
ArrayList subStreams = this.GetSubStreams(persistId);
this.LoadSubStreams(uielement, subStreams);
}
if (this._customJournaledObjects != null && this._customJournaledObjects.Contains(persistId))
{
CustomJournalStateInternal state = (CustomJournalStateInternal)this._customJournaledObjects[persistId];
IJournalState journalState = node as IJournalState;
if (journalState != null)
{
journalState.RestoreJournalState(state);
}
}
}
}
private void SaveState(object node)
{
UIElement uielement = node as UIElement;
if (uielement == null)
{
return;
}
int persistId = uielement.PersistId;
if (persistId != 0)
{
ArrayList arrayList = this.SaveSubStreams(uielement);
if (arrayList != null && !this._subStreams.Contains(persistId))
{
this._subStreams[persistId] = arrayList;
}
IJournalState journalState = node as IJournalState;
if (journalState != null)
{
object journalState2 = journalState.GetJournalState(JournalReason.NewContentNavigation);
if (journalState2 != null)
{
if (this._customJournaledObjects == null)
{
this._customJournaledObjects = new HybridDictionary(2);
}
if (!this._customJournaledObjects.Contains(persistId))
{
this._customJournaledObjects[persistId] = journalState2;
}
}
}
}
}
private void LoadState(object node)
{
UIElement element = node as UIElement;
if (element == null)
{
return;
}
#pragma warning disable 618
int persistId = element.PersistId;
#pragma warning restore 618
// Due to
if (persistId != 0)
{
if (this.HasSubStreams(persistId))
{
// Get the properties to restore
ArrayList properties = this.GetSubStreams(persistId);
LoadSubStreams(element, properties);
}
if (_customJournaledObjects != null && _customJournaledObjects.Contains(persistId))
{
CustomJournalStateInternal state =
(CustomJournalStateInternal)_customJournaledObjects[persistId];
Debug.Assert(state != null);
IJournalState customJournalingObject = node as IJournalState;
//
// For below two scenarios, JournalData cannot be restored successfully. For now, we just
// simply ignore it and don't throw exception.
//
// A. After the tree was created from xaml/baml stream, some elements might be replaced
// programatically with new elements which could be created from other xaml/baml by Parser.
//
// B. If the loose xaml file has been changed since the journal data was created
//
//
if (customJournalingObject != null)
{
customJournalingObject.RestoreJournalState(state);
}
}
}
}
private void SaveState(object node)
{
UIElement element = node as UIElement;
if (element == null)
{
return;
}
// Due to
#pragma warning disable 618
int persistId = element.PersistId;
#pragma warning restore 618
if (persistId != 0)
{
ArrayList subStreams = this.SaveSubStreams(element);
if (subStreams != null)
{
//
// If one element in the tree is replaced with a new element which is created
// from a xaml/baml stream programatically, this new element and all its descendent nodes
// would have another set of PersistId starting from 1, it would end up with two or more
// elements in the same page share the same PersistId. We cannot guarantee to restore
// journaldata for the newly added elements when doing the journaling navigation.
//
// So to do some level protection to avoid application crash, the code doesn't update the
// journaldata for that element id if the data was set already.
//
//
if (!_subStreams.Contains(persistId))
{
_subStreams[persistId] = subStreams;
}
}
IJournalState customJournalingObject = node as IJournalState;
if (customJournalingObject != null)
{
object customState = customJournalingObject.GetJournalState(JournalReason.NewContentNavigation);
if (customState != null)
{
if (_customJournaledObjects == null)
{
_customJournaledObjects = new HybridDictionary(2);
}
//
// Again, We cannot guarantee the PeristId of all elements in the same page are unique.
// Some IJouralState aware node such as Frame, FlowDocumentPageViewer could be added
// programatically after the page is created from baml stream, the new added node could also
// be created from baml/xaml stream by Parser.
//
if (!_customJournaledObjects.Contains(persistId))
{
_customJournaledObjects[persistId] = customState;
}
}
}
}
}
private void SaveState(object node)
{
UIElement element = node as UIElement;
if (element == null)
{
return;
}
// Due to bug 1282529, PersistId can be null. Only XAML/BAML-loaded elements have it.
// Besides for PageFunctions journaled by type, the PersistId check below is needed
// because elements might have been added to the tree after loading from XAML/BAML.
#pragma warning disable 618
int persistId = element.PersistId;
#pragma warning restore 618
if (persistId != 0)
{
ArrayList subStreams = this.SaveSubStreams(element);
if (subStreams != null)
{
//
// If one element in the tree is replaced with a new element which is created
// from a xaml/baml stream programatically, this new element and all its descendent nodes
// would have another set of PersistId starting from 1, it would end up with two or more
// elements in the same page share the same PersistId. We cannot guarantee to restore
// journaldata for the newly added elements when doing the journaling navigation.
//
// So to do some level protection to avoid application crash, the code doesn't update the
// journaldata for that element id if the data was set already.
//
// We cannot track whether the element with the specific PersistId is created from
// the original xaml/baml stream, or is added later from another xaml/baml stream.
// More efficient solution will be invented in next version.
//
if (!_subStreams.Contains(persistId))
{
_subStreams[persistId] = subStreams;
}
}
IJournalState customJournalingObject = node as IJournalState;
if (customJournalingObject != null)
{
object customState = customJournalingObject.GetJournalState(JournalReason.NewContentNavigation);
if (customState != null)
{
if (_customJournaledObjects == null)
{
_customJournaledObjects = new HybridDictionary(2);
}
//
// Again, We cannot guarantee the PeristId of all elements in the same page are unique.
// Some IJouralState aware node such as Frame, FlowDocumentPageViewer could be added
// programatically after the page is created from baml stream, the new added node could also
// be created from baml/xaml stream by Parser.
//
if (!_customJournaledObjects.Contains(persistId))
{
_customJournaledObjects[persistId] = customState;
}
}
}
}
}
