Update directive utilities plugin

Plugins/DirectiveUtilities/Source/DirectiveUtilitiesEditor/Private/Tasks/DirectiveUtilEditorSlowTask.cpp

@@ -0,0 +1,85 @@
+// Copyright (c) 2026 Unreal Directive. Licensed under the MIT License.
+
+#include "Tasks/DirectiveUtilEditorSlowTask.h"
+
+#include "Misc/ScopedSlowTask.h"
+
+namespace
+{
+	UDirectiveUtilEditorSlowTask* ActiveSlowTask = nullptr;
+}
+
+void UDirectiveUtilEditorSlowTask::Initialize(
+	const float TotalWork,
+	const FText& Description,
+	const bool bCanCancel,
+	const bool bShowDialog)
+{
+	Finish();
+	if (!FMath::IsFinite(TotalWork) || TotalWork <= 0.0f)
+	{
+		return;
+	}
+	if (ActiveSlowTask && ActiveSlowTask != this)
+	{
+		return;
+	}
+
+	SlowTask = new FScopedSlowTask(TotalWork, Description);
+	ActiveSlowTask = this;
+	AddToRoot();
+	if (bShowDialog)
+	{
+		SlowTask->MakeDialog(bCanCancel, true);
+	}
+}
+
+bool UDirectiveUtilEditorSlowTask::Advance(const float Work, const FText& Message)
+{
+	if (!SlowTask || !FMath::IsFinite(Work) || Work < 0.0f)
+	{
+		return false;
+	}
+
+	const float CompletedWork = SlowTask->CompletedWork + SlowTask->CurrentFrameScope;
+	const float RemainingWork = FMath::Max(0.0f, SlowTask->TotalAmountOfWork - CompletedWork);
+	SlowTask->EnterProgressFrame(FMath::Min(Work, RemainingWork), Message);
+	return true;
+}
+
+bool UDirectiveUtilEditorSlowTask::IsCancelRequested() const
+{
+	return SlowTask && SlowTask->ShouldCancel();
+}
+
+bool UDirectiveUtilEditorSlowTask::IsActive() const
+{
+	return SlowTask != nullptr;
+}
+
+void UDirectiveUtilEditorSlowTask::Finish()
+{
+	if (!SlowTask)
+	{
+		return;
+	}
+
+	delete SlowTask;
+	SlowTask = nullptr;
+	if (ActiveSlowTask == this)
+	{
+		ActiveSlowTask = nullptr;
+	}
+	if (IsRooted())
+	{
+		RemoveFromRoot();
+	}
+}
+
+void UDirectiveUtilEditorSlowTask::FinishActiveTask()
+{
+	if (ActiveSlowTask)
+	{
+		ActiveSlowTask->Finish();
+	}
+}