Adding a closeProject method

src/GUI/UndoStack.cpp

@@ -42,9 +42,15 @@ UndoStack::UndoStack( QWidget* parent ) : QUndoView( parent )
     connect( m_undoShortcut, SIGNAL( activated() ), m_undoStack, SLOT( undo() ) );
     connect( m_redoShortcut, SIGNAL( activated() ), m_undoStack, SLOT( redo() ) );
 
+    connect( ProjectManager::getInstance(), SIGNAL( projectClosed() ), this, SLOT( clear() ) );
 }
 
 void    UndoStack::push( QUndoCommand* command )
 {
     m_undoStack->push( command );
 }
+
+void    UndoStack::clear()
+{
+    m_undoStack->setIndex( 0 );
+}

src/GUI/UndoStack.h

@@ -45,6 +45,9 @@ class UndoStack : public QUndoView, public QSingleton<UndoStack>
         KeyboardShortcutHelper*     m_undoShortcut;
         KeyboardShortcutHelper*     m_redoShortcut;
 
+    public slots:
+        void            clear();
+
     signals:
         void            cleanChanged( bool val );
 

src/Library/Library.cpp

@@ -63,7 +63,6 @@ void        Library::metaDataComputed( Media* media )
     emit newMediaLoaded( media );
     Clip* clip = new Clip( media );
     m_clips[media->getUuid()] = clip;
-    emit newClipLoaded( clip );
 }
 
 void        Library::newMediaLoadingAsked( const QString& filePath, const QString& uuid )
@@ -202,3 +201,25 @@ void        Library::saveProject( QDomDocument& doc, QDomElement& rootNode )
     }
     rootNode.appendChild( medias );
 }
+
+void    Library::clear()
+{
+    QHash<QUuid, Media*>::iterator  it = m_medias.begin();
+    QHash<QUuid, Media*>::iterator  end = m_medias.end();
+
+    while ( it != end )
+    {
+        emit mediaRemoved( it.key() );
+        delete it.value();
+        ++it;
+    }
+    m_medias.clear();
+    QHash<QUuid, Clip*>::iterator  it2 = m_clips.begin();
+    QHash<QUuid, Clip*>::iterator  end2 = m_clips.end();
+    while ( it2 != end2 )
+    {
+        delete it2.value();
+        ++it2;
+    }
+    m_clips.clear();
+}

src/Library/Library.h

@@ -82,12 +82,15 @@ public slots:
 
     void                    loadProject( const QDomElement& project );
     void                    saveProject( QDomDocument& doc, QDomElement& rootNode );
+    /**
+     *  \brief  Clear the library (remove all the loaded media and delete them)
+     */
+    void                    clear();
 
 private slots:
     void                    metaDataComputed( Media* );
 
 signals:
-    void                    newClipLoaded( Clip* );
     void                    metadataRequired( Media* );
     void                    newMediaLoaded( Media* );
     void                    mediaRemoved( const QUuid& );

src/Project/ProjectManager.cpp

@@ -33,6 +33,8 @@ ProjectManager::ProjectManager() : m_projectFile( NULL ), m_needSave( false )
 {
     QSettings s;
     m_recentsProjects = s.value( "RecentsProjects" ).toStringList();
+    connect( this, SIGNAL( projectClosed() ), Library::getInstance(), SLOT( clear() ) );
+    connect( this, SIGNAL( projectClosed() ), MainWorkflow::getInstance(), SLOT( clear() ) );
 }
 
 ProjectManager::~ProjectManager()
@@ -90,9 +92,8 @@ void    ProjectManager::loadProject( const QString& fileName )
     QSettings s;
     s.setValue( "RecentsProjects", m_recentsProjects );
 
+    closeProject();
 
-    if ( !m_projectFile )
-        delete m_projectFile;
     m_projectFile = new QFile( fileName );
 
     m_domDocument = new QDomDocument;
@@ -163,3 +164,13 @@ void    ProjectManager::saveProject( bool saveAs /*= true*/ )
     }
     emit projectSaved();
 }
+
+void    ProjectManager::closeProject()
+{
+    if ( m_projectFile != NULL )
+    {
+        delete m_projectFile;
+        m_projectFile = NULL;
+    }
+    emit projectClosed();
+}

src/Project/ProjectManager.h

@@ -40,6 +40,7 @@ public:
     void            saveProject( bool saveAs = true );
     bool            needSave() const;
     QStringList     recentsProjects() const;
+    void            closeProject();
 
 private:
     ProjectManager();
@@ -62,6 +63,7 @@ private slots:
 signals:
     void            projectChanged( const QString& projectName, bool savedState );
     void            projectSaved();
+    void            projectClosed();
 };
 
 #endif // PROJECTMANAGER_H

src/Workflow/MainWorkflow.h

@@ -123,8 +123,6 @@ class   MainWorkflow : public QObject, public Singleton<MainWorkflow>
          */
         Clip*                   getClip( const QUuid& uuid, unsigned int trackId, MainWorkflow::TrackType trackType );
 
-        void                    clear();
-
         void                    setFullSpeedRender( bool value );
         int                     getTrackCount( MainWorkflow::TrackType trackType ) const;
 
@@ -168,6 +166,7 @@ class   MainWorkflow : public QObject, public Singleton<MainWorkflow>
     public slots:
         void                            loadProject( const QDomElement& project );
         void                            saveProject( QDomDocument& doc, QDomElement& rootNode );
+        void                            clear();
 
     signals:
         /**