/** Called at the end of SetObjectArray after we change the objects being observed */
void SDetailsView::PostSetObject()
{
DestroyColorPicker();
ColorPropertyNode = NULL;
FPropertyNodeInitParams InitParams;
InitParams.ParentNode = NULL;
InitParams.Property = NULL;
InitParams.ArrayOffset = 0;
InitParams.ArrayIndex = INDEX_NONE;
InitParams.bAllowChildren = true;
InitParams.bForceHiddenPropertyVisibility = FPropertySettings::Get().ShowHiddenProperties();
RootPropertyNode->InitNode( InitParams );
bool bInitiallySeen = true;
bool bParentAllowsVisible = true;
// Restore existing expanded items
RestoreExpandedItems();
UpdatePropertyMap();
}
/** Ticks the property view. This function performs a data consistency check */
void SDetailsViewBase::Tick( const FGeometry& AllottedGeometry, const double InCurrentTime, const float InDeltaTime )
{
for (int32 i = 0; i < CustomizationClassInstancesPendingDelete.Num(); ++i)
{
ensure(CustomizationClassInstancesPendingDelete[i].IsUnique());
}
if (RootNodePendingKill.IsValid())
{
RootNodePendingKill->Disconnect();
RootNodePendingKill.Reset();
}
// Empty all the customization instances that need to be deleted
CustomizationClassInstancesPendingDelete.Empty();
auto RootPropertyNode = GetRootNode();
check(RootPropertyNode.IsValid());
// Purge any objects that are marked pending kill from the object list
if (auto ObjectRoot = RootPropertyNode->AsObjectNode())
{
ObjectRoot->PurgeKilledObjects();
}
if (DeferredActions.Num() > 0)
{
// Any deferred actions are likely to cause the node tree to be at least partially rebuilt
// Save the expansion state of existing nodes so we can expand them later
SaveExpandedItems();
// Execute any deferred actions
for (int32 ActionIndex = 0; ActionIndex < DeferredActions.Num(); ++ActionIndex)
{
DeferredActions[ActionIndex].ExecuteIfBound();
}
DeferredActions.Empty();
}
if( RootPropertyNode == RootNodePendingKill )
{
// Reaquire the root property node. It may have been changed by the deferred actions if something like a blueprint editor forcefully resets a details panel during a posteditchange
RootPropertyNode = GetRootNode();
RestoreExpandedItems();
}
bool bValidateExternalNodes = true;
FPropertyNode::DataValidationResult Result = RootPropertyNode->EnsureDataIsValid();
if (Result == FPropertyNode::PropertiesChanged || Result == FPropertyNode::EditInlineNewValueChanged)
{
RestoreExpandedItems();
UpdatePropertyMap();
}
else if (Result == FPropertyNode::ArraySizeChanged)
{
RestoreExpandedItems();
UpdateFilteredDetails();
}
else if (Result == FPropertyNode::ObjectInvalid)
{
ForceRefresh();
// All objects are being reset, no need to validate external nodes
bValidateExternalNodes = false;
}
if (bValidateExternalNodes)
{
for (int32 NodeIndex = 0; NodeIndex < ExternalRootPropertyNodes.Num(); ++NodeIndex)
{
TSharedPtr<FPropertyNode> PropertyNode = ExternalRootPropertyNodes[NodeIndex].Pin();
if (PropertyNode.IsValid())
{
Result = PropertyNode->EnsureDataIsValid();
if (Result == FPropertyNode::PropertiesChanged || Result == FPropertyNode::EditInlineNewValueChanged)
{
RestoreExpandedItems(PropertyNode);
UpdatePropertyMap();
// Note this will invalidate all the external root nodes so there is no need to continue
ExternalRootPropertyNodes.Empty();
break;
}
else if (Result == FPropertyNode::ArraySizeChanged)
{
RestoreExpandedItems(PropertyNode);
UpdateFilteredDetails();
}
}
else
{
// Remove the current node if it is no longer valid
ExternalRootPropertyNodes.RemoveAt(NodeIndex);
--NodeIndex;
}
}
}
if (DetailLayout.IsValid())
{
DetailLayout->Tick(InDeltaTime);
}
if (!ColorPropertyNode.IsValid() && bHasOpenColorPicker)
{
// Destroy the color picker window if the color property node has become invalid
DestroyColorPicker();
bHasOpenColorPicker = false;
}
if (FilteredNodesRequestingExpansionState.Num() > 0)
{
// change expansion state on the nodes that request it
for (TMap<TSharedRef<IDetailTreeNode>, bool >::TConstIterator It(FilteredNodesRequestingExpansionState); It; ++It)
{
DetailTree->SetItemExpansion(It.Key(), It.Value());
}
FilteredNodesRequestingExpansionState.Empty();
}
}
