Add support for tuner into factory.

Fix also bad tuner destructor.

src/dtkCore/dtkCorePluginFactory.h

@@ -16,6 +16,8 @@
 
 #include <QtCore>
 
+template < typename T > class dtkCorePluginTuner;
+
 // ///////////////////////////////////////////////////////////////////
 // dtkCorePluginFactory
 // ///////////////////////////////////////////////////////////////////
@@ -28,18 +30,22 @@ public:
 
 public:
     typedef T *(*creator) ();
+    typedef dtkCorePluginTuner<T> *(*tunerCreator) ();
 
 public:
     void record(const QString& key, creator func);
+    void recordTuner(const QString& key, tunerCreator func);
 
 public:
     T *create(const QString& key) const;
+    dtkCorePluginTuner<T> *createTuner(const QString& key) const;
 
 public:
     QStringList keys(void) const;
 
 private:
     QHash<QString, creator> creators;
+    QHash<QString, tunerCreator> tuner_creators;
 };
 
 // ///////////////////////////////////////////////////////////////////

src/dtkCore/dtkCorePluginFactory.tpp

@@ -38,6 +38,16 @@ template <typename T> void dtkCorePluginFactory<T>::record(const QString& key, c
     this->creators.insert(key, func);
 }
 
+template <typename T> void dtkCorePluginFactory<T>::recordTuner(const QString& key, tunerCreator func)
+{
+    if (this->tuner_creators.contains(key)) {
+        qDebug() << Q_FUNC_INFO << "Factory already contains key" << key << ". Nothing is done";
+        return;
+    }
+
+    this->tuner_creators.insert(key, func);
+}
+
 // /////////////////////////////////////////////////////////////////
 // Type creator invokation
 // /////////////////////////////////////////////////////////////////
@@ -50,6 +60,14 @@ template <typename T> T *dtkCorePluginFactory<T>::create(const QString& key) con
     return this->creators.value(key)();
 }
 
+template <typename T> dtkCorePluginTuner<T> *dtkCorePluginFactory<T>::createTuner(const QString& key) const
+{
+    if(!this->tuner_creators.contains(key))
+        return NULL;
+
+    return this->tuner_creators.value(key)();
+}
+
 // /////////////////////////////////////////////////////////////////
 // Type creator inspection
 // /////////////////////////////////////////////////////////////////

src/dtkCore/dtkCorePluginTuner.h

@@ -24,7 +24,7 @@ template < typename T > class dtkCorePluginTuner
 {
 public:
              dtkCorePluginTuner(void);
-    virtual ~dtkCorePluginTuner(void) {}
+    virtual ~dtkCorePluginTuner(void);
 
     void setObject(T *object);
     void setMap(const QVariantHash& map);