diff --git a/snippets/CMakeLists.txt b/snippets/CMakeLists.txt
index a03ef56..e15085c 100644
--- a/snippets/CMakeLists.txt
+++ b/snippets/CMakeLists.txt
@@ -40,7 +40,6 @@ endif()
 add_executable(compte_mots compte_mots.cpp)
 
 add_library(polynomial SHARED Polynomial.cpp Polynomial.tpp)
-#target_link_libraries(polynomial -static)
 
 if(GTest_FOUND)
     add_executable(polynomialTest gTestPolynomial.cpp)
diff --git a/xmlParser/CMakeLists.txt b/xmlParser/CMakeLists.txt
index e1acc4e..d2d788e 100644
--- a/xmlParser/CMakeLists.txt
+++ b/xmlParser/CMakeLists.txt
@@ -22,6 +22,11 @@ endif()
 
 find_path(PugiXML_INCLUDE_DIR pugixml.hpp)
 
+find_package(ImGui-SFML REQUIRED)
+if(NOT ImGui-SFML_FOUND)
+    message(FATAL "ImGui-SFML non trouvé")
+endif()
+
 add_library(xmlParser SHARED
         Circle.cpp
         Circle.h
@@ -35,7 +40,11 @@ add_library(xmlParser SHARED
 target_link_libraries(xmlParser
         sfml-window
         sfml-graphics
-        pugixml)
+        sfml-system
+        pugixml
+        ImGui-SFML::ImGui-SFML)
+
+target_compile_options(xmlParser PRIVATE -Wall -Wpedantic -Wextra)
 
 add_executable(gTestXMLParser gTestXMLParser.cpp)
 target_compile_options(gTestXMLParser PRIVATE -pthread)
@@ -45,5 +54,7 @@ target_link_libraries(gTestXMLParser
         gtest
         sfml-graphics
         sfml-window
-        pugixml)
+        sfml-system
+        pugixml
+        ImGui-SFML::ImGui-SFML)
 target_link_options(gTestXMLParser PRIVATE -pthread)
\ No newline at end of file
diff --git a/xmlParser/Circle.cpp b/xmlParser/Circle.cpp
index d320994..343d535 100644
--- a/xmlParser/Circle.cpp
+++ b/xmlParser/Circle.cpp
@@ -9,7 +9,7 @@ namespace xmlParser
 
     Circle::Circle(std::string label, float x, float y, float r, const sf::Color& color) : DrawingElement(std::move(label),x,y,color), r(2)
     {
-        shape = new sf::CircleShape(r);
+        shape = std::unique_ptr<sf::Shape>(new sf::CircleShape(r));
         shape->setPosition(x-r,y-r);
         shape->setFillColor(color);
     }
@@ -20,16 +20,11 @@ namespace xmlParser
         {
             label = "Test Circle";
         }
-        shape = new sf::CircleShape(r);
+        shape = std::unique_ptr<sf::Shape>(new sf::CircleShape(r));
         shape->setPosition(x-r,y-r);
         shape->setFillColor(color);
     }
 
-    void Circle::draw(sf::RenderWindow& window)
-    {
-        window.draw(*(dynamic_cast<sf::CircleShape*>(shape)));
-    }
-
     float Circle::getR() const
     {
         return r;
@@ -38,13 +33,18 @@ namespace xmlParser
     void Circle::setR(float newR)
     {
         r = newR;
-        dynamic_cast<sf::CircleShape*>(shape)->setRadius(r);
+        dynamic_cast<sf::CircleShape*>(shape.get())->setRadius(r);
         shape->setPosition(x-r,y-r);
     }
 
-    const std::string Circle::toString() const
+    const std::string Circle::toString(int indent) const
     {
         std::stringstream string;
+        for(int i = 0;i<indent;i++)
+        {
+            string << "\t";
+        }
+
         string << label << " at x:" << getX() << " y:" << getY() << " | r:" << getR();
         string << " color:" << getStringColor();
         return(string.str());
diff --git a/xmlParser/Circle.h b/xmlParser/Circle.h
index 2211297..ee945e3 100644
--- a/xmlParser/Circle.h
+++ b/xmlParser/Circle.h
@@ -22,8 +22,6 @@ namespace xmlParser
 
         explicit Circle(const pugi::xml_node&);
 
-        void draw(sf::RenderWindow&) override;
-
         void setX(float newX) override;
 
         void setY(float newY) override;
@@ -31,7 +29,7 @@ namespace xmlParser
         float getR() const;
         void setR(float newR);
 
-        const std::string toString() const override;
+        const std::string toString(int indent) const override;
     private:
         float r;
     };
diff --git a/xmlParser/DrawingElement.cpp b/xmlParser/DrawingElement.cpp
index fd3476c..573b894 100644
--- a/xmlParser/DrawingElement.cpp
+++ b/xmlParser/DrawingElement.cpp
@@ -9,16 +9,21 @@
 
 namespace xmlParser
 {
-    DrawingElement::DrawingElement(std::string label, float x, float y, const sf::Color& color) : x(x), y(-y), label(std::move(label)),
+    DrawingElement::DrawingElement(std::string label, float x, float y, const sf::Color& color) :  label(std::move(label)), x(x), y(-y),
         color(color), shape(nullptr)
     {}
 
-    DrawingElement::DrawingElement(const pugi::xml_node& node) : x(node.attribute("x").as_int(0)),
-        y(-node.attribute("y").as_int(1)), label(node.attribute("label").as_string("Test DrawingElement")), shape(nullptr)
+    DrawingElement::DrawingElement(const pugi::xml_node& node) : label(node.attribute("label").as_string("Test DrawingElement")),
+        x(node.attribute("x").as_int(0)), y(-node.attribute("y").as_int(1)), shape(nullptr)
     {
         setColor(node.attribute("color").as_string("Yellow"));
     }
 
+    void DrawingElement::draw(sf::RenderWindow& window)
+    {
+        window.draw(*shape);
+    }
+
     void DrawingElement::draw(sf::RenderWindow& window, float referenceX, float referenceY)
     {
         setX(x+referenceX);
@@ -37,7 +42,7 @@ namespace xmlParser
     {
         x = newX;
 
-        if(shape != nullptr)
+        if(shape)
         {
             shape->setPosition(x,-y);
         }
@@ -52,7 +57,7 @@ namespace xmlParser
     {
         y = newY;
 
-        if(shape != nullptr)
+        if(shape)
         {
             shape->setPosition(x,-y);
         }
@@ -83,17 +88,9 @@ namespace xmlParser
         color = strToColor(stringColor);
     }
 
-    const std::string DrawingElement::toString() const
-    {
-        std::stringstream string;
-        string << label << " at x:" << getX() << " y:" << getY();
-        string << " | color:" << getStringColor();
-        return(string.str());
-    }
-
     std::ostream& operator<<(std::ostream& ostream, const DrawingElement& element)
     {
-        ostream << element.toString();
+        ostream << element.toString(0);
         return(ostream);
     }
 }
\ No newline at end of file
diff --git a/xmlParser/DrawingElement.h b/xmlParser/DrawingElement.h
index acb5356..a52956f 100644
--- a/xmlParser/DrawingElement.h
+++ b/xmlParser/DrawingElement.h
@@ -20,12 +20,13 @@ namespace xmlParser
     {
     public:
 
+        // TODO : S'arranger pour n'avoir que des constructeurs sensés : pas de constructeur vide/résultat non évident
         explicit DrawingElement(std::string label = "Test DrawingElement", float x = 0, float y = 1,
                 const sf::Color& = sf::Color::Yellow);
 
         explicit DrawingElement(const pugi::xml_node&);
 
-        virtual void draw(sf::RenderWindow&) = 0;
+        virtual void draw(sf::RenderWindow&);
         void draw(sf::RenderWindow&, float referenceX, float referenceY);
 
         std::string label;
@@ -41,7 +42,7 @@ namespace xmlParser
         void setColor(const sf::Color& newColor);
         void setColor(const std::string& stringColor);
 
-        virtual const std::string toString() const;
+        virtual const std::string toString(int indent) const = 0;
 
         friend std::ostream& operator<<(std::ostream&,const DrawingElement&);
 
@@ -51,7 +52,7 @@ namespace xmlParser
 
         sf::Color color;
 
-        sf::Shape* shape;
+        std::unique_ptr<sf::Shape> shape;
     };
 }
 
diff --git a/xmlParser/Group.cpp b/xmlParser/Group.cpp
index 9ac432f..a9735b6 100644
--- a/xmlParser/Group.cpp
+++ b/xmlParser/Group.cpp
@@ -6,7 +6,7 @@
 
 namespace xmlParser
 {
-    Group::Group(std::string label, float x, float y, const sf::Color& color) : DrawingElement(std::move(label),x,y,color), drawingElements({})
+    Group::Group(std::string label, float x, float y, const sf::Color& color) : DrawingElement(std::move(label),x,y,color), drawingElements()
     {}
 
     Group::Group(const pugi::xml_node& node) : DrawingElement(node)
@@ -32,7 +32,7 @@ namespace xmlParser
                                          !strncmp(childNode.name(),"Group",5) ? dynamic_cast<DrawingElement*>(new Group(childNode)) : nullptr;
             if(newElement != nullptr)
             {
-                drawingElements.insert(std::make_pair(newElement->label,newElement));
+                drawingElements.emplace(std::make_pair(newElement->label,std::move(std::unique_ptr<DrawingElement>(newElement))));
             }
         }
     }
@@ -42,13 +42,13 @@ namespace xmlParser
         std::transform(elements.begin(),elements.end(),std::inserter(drawingElements,drawingElements.begin()),
                 [](std::pair<std::string,DrawingElement*> pair)
                 {
-                    return(pair);
+                    return(std::make_pair(pair.first,std::move(std::unique_ptr<DrawingElement>(pair.second))));
                 });
     }
 
     bool Group::addDrawingElement(DrawingElement* drawingElement)
     {
-        return(drawingElements.insert(std::make_pair(drawingElement->label,drawingElement)).second);
+        return(drawingElements.insert(std::make_pair(drawingElement->label,std::move(std::unique_ptr<DrawingElement>(drawingElement)))).second);
     }
 
     bool Group::removeDrawingElement(const std::string& label)
@@ -58,7 +58,7 @@ namespace xmlParser
 
     DrawingElement* Group::getDrawingElement(const std::string& label)
     {
-        return(drawingElements.at(label));
+        return(drawingElements.at(label).get());
     }
 
     void Group::draw(sf::RenderWindow& window)
@@ -69,15 +69,20 @@ namespace xmlParser
         }
     }
 
-    const std::string Group::toString() const
+    const std::string Group::toString(int indent) const
     {
         std::stringstream string;
+        for(int i = 0;i<indent;i++)
+        {
+            string << "\t";
+        }
+
         string << label << " at x:" << getX() << " y:" << getY();
         string << " color:" << getStringColor() << std::endl;
 
         for(const auto& element : drawingElements)
         {
-            string << "\t" << *(element.second) << std::endl;
+            string << element.second->toString(indent+1) << std::endl;
         }
         return(string.str());
     }
diff --git a/xmlParser/Group.h b/xmlParser/Group.h
index 99c7a42..1d7b2c7 100644
--- a/xmlParser/Group.h
+++ b/xmlParser/Group.h
@@ -34,9 +34,9 @@ namespace xmlParser
 
         void draw(sf::RenderWindow&) override;
 
-        const std::string toString() const override;
+        const std::string toString(int indent) const override;
     private:
-        std::map<std::string,DrawingElement*> drawingElements;
+        std::map<std::string,std::unique_ptr<DrawingElement>> drawingElements;
     };
 
 }
diff --git a/xmlParser/gTestXMLParser.cpp b/xmlParser/gTestXMLParser.cpp
index 23534d3..62e4947 100644
--- a/xmlParser/gTestXMLParser.cpp
+++ b/xmlParser/gTestXMLParser.cpp
@@ -5,12 +5,44 @@
 #include <gtest/gtest.h>
 #include <iostream>
 
+#include "imgui.h"
+#include "imgui-SFML.h"
+
 #include "Circle.h"
 #include "xmlParser.h"
 #include "SFML/Graphics.hpp"
 #include "Group.h"
 
 
+class ImGui_F : public ::testing::Test
+{
+protected:
+
+    sf::RenderWindow* window;
+
+    sf::Color bgColor;
+
+    sf::Clock deltaClock;
+
+    float color[3] = { 0.f, 0.f, 0.f };
+
+    // let's use char array as buffer, see next part
+    // for instructions on using std::string with ImGui
+    char windowTitle[255];
+
+    void SetUp() override
+    {
+        window = new sf::RenderWindow(sf::VideoMode(640, 480), "");
+        window->setVerticalSyncEnabled(true);
+        ImGui::SFML::Init(*window);
+
+        strcpy(windowTitle,"ImGui + SFML = <3");
+
+        window->setTitle(windowTitle);
+        window->resetGLStates(); // call it if you only draw ImGui. Otherwise not needed.
+    }
+};
+
 TEST(xmlParserInits,initEmptyCircle)
 {
     xmlParser::Circle cercle = xmlParser::Circle();
@@ -191,6 +223,54 @@ TEST(drawFace,drawFace)
     }
 }
 
+TEST_F(ImGui_F,ImGui_Example)
+{
+    while (window->isOpen()) {
+        sf::Event event;
+        while (window->pollEvent(event)) {
+            ImGui::SFML::ProcessEvent(event);
+
+            if (event.type == sf::Event::Closed) {
+                window->close();
+            }
+        }
+
+        ImGui::SFML::Update(*window, deltaClock.restart());
+
+        ImGui::Begin("Sample window"); // begin window
+
+        // Background color edit
+        if (ImGui::ColorEdit3("Background color", color)) {
+            // this code gets called if color value changes, so
+            // the background color is upgraded automatically!
+            bgColor.r = static_cast<sf::Uint8>(color[0] * 255.f);
+            bgColor.g = static_cast<sf::Uint8>(color[1] * 255.f);
+            bgColor.b = static_cast<sf::Uint8>(color[2] * 255.f);
+        }
+
+        // Window title text edit
+        ImGui::InputText("Window title", windowTitle, 255);
+
+        if (ImGui::Button("Update window title")) {
+            // this code gets if user clicks on the button
+            // yes, you could have written if(ImGui::InputText(...))
+            // but I do this to show how buttons work :)
+            window->setTitle(windowTitle);
+        }
+        ImGui::End(); // end window
+
+        window->clear(bgColor); // fill background with color
+        ImGui::SFML::Render(*window);
+        window->display();
+    }
+
+    ImGui::SFML::Shutdown();
+}
+
+TEST_F(ImGui_F,ImGui_Perso)
+{
+    // TODO : Copy examples to create new shapes 'n stuff
+}
 int main(int argc, char** argv)
 {
     ::testing::InitGoogleTest(&argc,argv);