--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Framework/StatefulOrthancJob.h	Mon Sep 17 11:34:55 2018 +0200
@@ -0,0 +1,136 @@
+/**
+ * Transfers accelerator plugin for Orthanc
+ * Copyright (C) 2018 Osimis, 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 <Plugins/Samples/Common/OrthancPluginCppWrapper.h>
+
+#include <memory>
+
+
+namespace OrthancPlugins
+{
+  class StatefulOrthancJob : public OrthancJob
+  {
+  protected:
+    class IState;
+
+
+    class JobInfo : public boost::noncopyable
+    {
+    private:
+      StatefulOrthancJob&  job_;
+      bool                 updated_;
+      Json::Value          content_;
+
+    public:
+      JobInfo(StatefulOrthancJob& job);
+
+      void SetProgress(float progress)
+      {
+        job_.UpdateProgress(progress);
+      }
+
+      void SetContent(const std::string& key,
+                      const Json::Value& value);
+
+      void Update();
+    };
+    
+
+    
+    class StateUpdate : public boost::noncopyable
+    {
+    private:
+      OrthancPluginJobStepStatus  status_;
+      std::auto_ptr<IState>       state_;
+
+      StateUpdate(OrthancPluginJobStepStatus status) :
+        status_(status)
+      {
+      }
+
+      StateUpdate(IState* state);
+
+    public:
+      static StateUpdate* Next(IState* state)  // Takes ownsership
+      {
+        return new StateUpdate(state);
+      }
+
+      static StateUpdate* Continue()
+      {
+        return new StateUpdate(OrthancPluginJobStepStatus_Continue);
+      }
+
+      static StateUpdate* Success()
+      {
+        return new StateUpdate(OrthancPluginJobStepStatus_Success);
+      }
+
+      static StateUpdate* Failure()
+      {
+        return new StateUpdate(OrthancPluginJobStepStatus_Failure);
+      }
+
+      OrthancPluginJobStepStatus GetStatus() const
+      {
+        return status_;
+      }
+      
+      bool IsOtherState() const
+      {
+        return state_.get() != NULL;
+      }
+
+      IState* ReleaseOtherState();
+    };    
+
+
+    class IState : public boost::noncopyable
+    {
+    public:
+      virtual ~IState()
+      {
+      }
+
+      virtual StateUpdate* Step() = 0;
+
+      virtual void Stop(OrthancPluginJobStopReason reason) = 0;
+    };
+
+    
+    virtual StateUpdate* CreateInitialState(JobInfo& info) = 0;
+    
+
+  private:
+    std::auto_ptr<IState>   state_;
+    JobInfo                 info_;
+
+
+  public:
+    StatefulOrthancJob(const std::string& jobType);
+    
+    virtual OrthancPluginJobStepStatus Step();
+
+    virtual void Stop(OrthancPluginJobStopReason reason);
+    
+    virtual void Reset();
+  };
+}