- Added full-featured jumpto command.

- Minor fixes on the gui.


git-svn-id: svn://svn.gna.org/svn/sgpemv2/trunk@901 3ecf2c5c-341e-0410-92b4-d18e462d057c

src/backend/simulation.cc

@@ -18,11 +18,18 @@
 // along with SGPEMv2; if not, write to the Free Software
 // Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
 
+#include "config.h"
+
 #include "simulation.hh"
+#include "simulation_observer.hh"
 #include "concrete_simulation.hh"
 
+#include <algorithm>
+#include <functional>
+
 // Do not include in header file:
 #include "singleton.tcc"
+
 using namespace sgpem;
 
 // Explicit template instantiation to allow to export symbols from the DSO.
@@ -37,3 +44,47 @@ Simulation::get_instance()
 {
   return Singleton<ConcreteSimulation>::get_instance();
 }
+
+void
+Simulation::attach(SimulationObserver& observer)
+{
+  _observers.push_back(&observer);
+}
+
+
+void
+Simulation::detach(const SimulationObserver& observer)
+{
+  _observers.erase(std::find(_observers.begin(),
+                             _observers.end(),
+                             &observer));
+}
+
+unsigned int Simulation::get_front() const
+{
+	return _front;
+}
+
+void
+Simulation::notify_change()
+{
+  //if (!_notify) return; // what's the purpose of this?
+
+  for (RegisteredObservers::iterator it = _observers.begin();
+       it != _observers.end(); it++)
+    (*it)->update(*this);
+}
+
+
+bool
+Simulation::set_notify_enabled(bool enabled)
+{
+  bool old_value = _notify;
+  _notify = enabled;
+
+  // Force notify if we re-enable it
+  if (old_value == false && _notify == true)
+    notify_change();
+
+  return old_value;
+}