From 2cc45edfbdfddb485731db57ef3ecf8b0f18bde0 Mon Sep 17 00:00:00 2001
From: brunoherbelin <bruno.herbelin@gmail.com>
Date: Sat, 23 May 2020 15:27:56 +0200
Subject: [PATCH] Saving and loading of Clone Sources.

---
 SessionCreator.cpp | 32 ++++++++++++++++++++++++++------
 SessionCreator.h   |  1 -
 SessionVisitor.cpp | 10 ++++++++++
 SessionVisitor.h   |  1 +
 Source.h           |  3 ++-
 5 files changed, 39 insertions(+), 8 deletions(-)

diff --git a/SessionCreator.cpp b/SessionCreator.cpp
index c69c6d3..72b227a 100644
--- a/SessionCreator.cpp
+++ b/SessionCreator.cpp
@@ -88,6 +88,32 @@ void SessionCreator::loadSession(XMLElement *sessionNode)
             // TODO : create other types of source
 
         }
+
+        // create clones after all sources to potentially clone have been created
+        sourceNode = sessionNode->FirstChildElement("Source");
+        for( ; sourceNode ; sourceNode = sourceNode->NextSiblingElement())
+        {
+            xmlCurrent_ = sourceNode;
+            counter++;
+
+            const char *pType = xmlCurrent_->Attribute("type");
+            if (!pType)
+                continue;
+
+            if ( std::string(pType) == "CloneSource") {
+                XMLElement* originNode = xmlCurrent_->FirstChildElement("origin");
+                if (originNode) {
+                    std::string sourcename = std::string ( originNode->GetText() );
+                    SourceList::iterator origin = session_->find(sourcename);
+                    if (origin != session_->end()) {
+                        CloneSource *new_clone_source = (*origin)->clone();
+                        new_clone_source->accept(*this);
+                        session_->addSource(new_clone_source);
+                    }
+                }
+            }
+        }
+
     }
     else
         Log::Warning("Session seems empty.");
@@ -244,11 +270,5 @@ void SessionCreator::visit (SessionSource& s)
 
 }
 
-void SessionCreator::visit (RenderSource& s)
-{
-
-}
-
-
 
 
diff --git a/SessionCreator.h b/SessionCreator.h
index e9825a0..adbb2ac 100644
--- a/SessionCreator.h
+++ b/SessionCreator.h
@@ -47,7 +47,6 @@ public:
     void visit (Source& s) override;
     void visit (MediaSource& s) override;
     void visit (SessionSource& s) override;
-    void visit (RenderSource& s) override;
 
     static void XMLToNode(tinyxml2::XMLElement *xml, Node &n);
 };
diff --git a/SessionVisitor.cpp b/SessionVisitor.cpp
index c2f52f4..e6fcb4b 100644
--- a/SessionVisitor.cpp
+++ b/SessionVisitor.cpp
@@ -354,3 +354,13 @@ void SessionVisitor::visit (RenderSource& s)
 {
     xmlCurrent_->SetAttribute("type", "RenderSource");
 }
+
+void SessionVisitor::visit (CloneSource& s)
+{
+    xmlCurrent_->SetAttribute("type", "CloneSource");
+
+    XMLElement *origin = xmlDoc_->NewElement("origin");
+    xmlCurrent_->InsertEndChild(origin);
+    XMLText *text = xmlDoc_->NewText( s.origin()->name().c_str() );
+    origin->InsertEndChild( text );
+}
diff --git a/SessionVisitor.h b/SessionVisitor.h
index af2e103..646c94e 100644
--- a/SessionVisitor.h
+++ b/SessionVisitor.h
@@ -44,6 +44,7 @@ public:
     void visit (MediaSource& s) override;
     void visit (SessionSource& s) override;
     void visit (RenderSource& s) override;
+    void visit (CloneSource& s) override;
 
     static tinyxml2::XMLElement *NodeToXML(Node &n, tinyxml2::XMLDocument *doc);
 };
diff --git a/Source.h b/Source.h
index c99c02a..4852d3c 100644
--- a/Source.h
+++ b/Source.h
@@ -138,7 +138,6 @@ class CloneSource : public Source
     friend class Source;
 
 public:
-    CloneSource(Source *origin);
     ~CloneSource();
 
     // implementation of source API
@@ -151,6 +150,8 @@ public:
     inline Source *origin() const { return origin_; }
 
 protected:
+    // only Source class can create new CloneSource via clone();
+    CloneSource(Source *origin);
 
     void init() override;
     Surface *clonesurface_;