--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Framework/Deprecated/SmartLoader.h	Tue May 21 14:27:35 2019 +0200
@@ -0,0 +1,67 @@
+/**
+ * Stone of Orthanc
+ * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
+ * Department, University Hospital of Liege, Belgium
+ * Copyright (C) 2017-2019 Osimis S.A., Belgium
+ *
+ * This program is free software: you can redistribute it and/or
+ * modify it under the terms of the GNU Affero General Public License
+ * as published by the Free Software Foundation, either version 3 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ **/
+
+
+#pragma once
+#include <map>
+
+#include "Layers/DicomSeriesVolumeSlicer.h"
+#include "../Messages/IObservable.h"
+#include "Toolbox/OrthancApiClient.h"
+
+namespace Deprecated
+{
+  class SliceViewerWidget;
+
+  class SmartLoader : public OrthancStone::IObservable, public OrthancStone::IObserver
+  {
+    class CachedSlice;
+
+  protected:
+    typedef std::map<std::string, boost::shared_ptr<SmartLoader::CachedSlice> > CachedSlices;
+    CachedSlices cachedSlices_;
+
+    typedef std::map<std::string, boost::shared_ptr<IVolumeSlicer> > PreloadingInstances;
+    PreloadingInstances preloadingInstances_;
+
+    OrthancStone::SliceImageQuality     imageQuality_;
+    OrthancApiClient&     orthancApiClient_;
+
+  public:
+    SmartLoader(OrthancStone::MessageBroker& broker, OrthancApiClient& orthancApiClient);  // TODO: add maxPreloadStorageSizeInBytes
+
+//    void PreloadStudy(const std::string studyId);
+//    void PreloadSeries(const std::string seriesId);
+    void PreloadSlice(const std::string instanceId, unsigned int frame);
+
+    void SetImageQuality(OrthancStone::SliceImageQuality imageQuality) { imageQuality_ = imageQuality; }
+
+    void SetFrameInWidget(SliceViewerWidget& sliceViewer, size_t layerIndex, const std::string& instanceId, unsigned int frame);
+
+    void GetFirstInstanceIdForSeries(std::string& output, const std::string& seriesId);
+
+  private:
+    void OnLayerGeometryReady(const IVolumeSlicer::GeometryReadyMessage& message);
+    void OnFrameReady(const DicomSeriesVolumeSlicer::FrameReadyMessage& message);
+    void OnLayerReady(const IVolumeSlicer::LayerReadyMessage& message);
+
+  };
+
+}