FReply FKismetVariableDragDropAction::DroppedOnAction(TSharedRef<FEdGraphSchemaAction> Action)
{
if(Action->GetTypeId() == FEdGraphSchemaAction_K2Var::StaticGetTypeId())
{
FEdGraphSchemaAction_K2Var* VarAction = (FEdGraphSchemaAction_K2Var*)&Action.Get();
// Only let you drag and drop if variables are from same BP class, and not onto itself
UBlueprint* BP = UBlueprint::GetBlueprintFromClass(Cast<UClass>(VariableSource.Get()));
FName TargetVarName = VarAction->GetVariableName();
if( (BP != NULL) &&
(VariableName != TargetVarName) &&
(VariableSource == VarAction->GetVariableClass()) )
{
bool bMoved = FBlueprintEditorUtils::MoveVariableBeforeVariable(BP, VariableName, TargetVarName, true);
// If we moved successfully
if(bMoved)
{
// Change category of var to match the one we dragged on to as well
FText MovedVarCategory = FBlueprintEditorUtils::GetBlueprintVariableCategory(BP, VariableName, GetLocalVariableScope());
FText TargetVarCategory = FBlueprintEditorUtils::GetBlueprintVariableCategory(BP, TargetVarName, GetLocalVariableScope());
if(!MovedVarCategory.EqualTo(TargetVarCategory))
{
FBlueprintEditorUtils::SetBlueprintVariableCategory(BP, VariableName, GetLocalVariableScope(), TargetVarCategory, true);
}
// Update Blueprint after changes so they reflect in My Blueprint tab.
FBlueprintEditorUtils::MarkBlueprintAsStructurallyModified(BP);
}
}
return FReply::Handled();
}
return FReply::Unhandled();
}
//------------------------------------------------------------------------------
FReply SBlueprintSubPalette::OnActionDragged( const TArray< TSharedPtr<FEdGraphSchemaAction> >& InActions, const FPointerEvent& MouseEvent )
{
if( InActions.Num() > 0 && InActions[0].IsValid() )
{
TSharedPtr<FEdGraphSchemaAction> InAction = InActions[0];
auto AnalyticsDelegate = FNodeCreationAnalytic::CreateStatic(&OnNodePlacement, BlueprintEditorPtr);
auto CanNodeBePlacedDelegate = FKismetDragDropAction::FCanBeDroppedDelegate::CreateStatic(&CanPaletteItemBePlaced);
if(InAction->GetTypeId() == FEdGraphSchemaAction_K2NewNode::StaticGetTypeId())
{
return FReply::Handled().BeginDragDrop(FKismetDragDropAction::New(InAction, AnalyticsDelegate, CanNodeBePlacedDelegate));
}
else if(InAction->GetTypeId() == FEdGraphSchemaAction_K2Var::StaticGetTypeId())
{
FEdGraphSchemaAction_K2Var* VarAction = (FEdGraphSchemaAction_K2Var*)InAction.Get();
UClass* VarClass = VarAction->GetVariableClass();
if(VarClass != NULL)
{
return FReply::Handled().BeginDragDrop(FKismetVariableDragDropAction::New(VarAction->GetVariableName(), VarClass, AnalyticsDelegate));
}
}
else if(InAction->GetTypeId() == FEdGraphSchemaAction_K2Delegate::StaticGetTypeId())
{
FEdGraphSchemaAction_K2Delegate* DelegateAction = (FEdGraphSchemaAction_K2Delegate*)InAction.Get();
UClass* VarClass = DelegateAction->GetDelegateClass();
check(VarClass);
if(VarClass != NULL)
{
return FReply::Handled().BeginDragDrop(FKismetDelegateDragDropAction::New(DelegateAction->GetDelegateName(), VarClass, AnalyticsDelegate));
}
}
else if (InAction->GetTypeId() == FBlueprintDragDropMenuItem::StaticGetTypeId())
{
FBlueprintDragDropMenuItem* BlueprintAction = (FBlueprintDragDropMenuItem*)InAction.Get();
TSharedPtr<FDragDropOperation> DragDropOp = BlueprintAction->OnDragged(AnalyticsDelegate);
if (DragDropOp.IsValid())
{
return FReply::Handled().BeginDragDrop(DragDropOp.ToSharedRef());
}
else
{
return FReply::Handled().BeginDragDrop(FKismetDragDropAction::New(InAction, AnalyticsDelegate, CanNodeBePlacedDelegate));
}
}
else
{
return FReply::Handled().BeginDragDrop(FKismetDragDropAction::New(InAction, AnalyticsDelegate, CanNodeBePlacedDelegate));
}
}
return FReply::Unhandled();
}
