- Mantain expanded state of TreeView rows while History updates.

It isn't elegant, but it's the best I can come up with in 10 minutes before
having dinner.


git-svn-id: svn://svn.gna.org/svn/sgpemv2/trunk@944 3ecf2c5c-341e-0410-92b4-d18e462d057c

src/schedulables_tree_widget.cc

@@ -19,7 +19,6 @@
 // Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
 
 #include "schedulables_tree_widget.hh"
-#include "templates/sequences.tcc"
 #include "backend/history.hh"
 #include "backend/simulation.hh"
 #include "backend/process.hh"
@@ -27,6 +26,8 @@
 #include "backend/resource.hh"
 #include "add_request_dialog.hh"
 
+#include "sequences.tcc"
+
 #include <cassert>
 #include <iostream>
 #include <sstream>
@@ -262,6 +263,15 @@ SchedulablesTreeWidget::on_button_press_event(GdkEventButton* event)
     return false;
 }
 
+
+void
+SchedulablesTreeWidget::_update_expanded_vector(Gtk::TreeView* treeview, 
+                                                const Gtk::TreeModel::Path& path)
+{
+  _expanded_rows.push_back(path.to_string());
+}
+
+
 void
 SchedulablesTreeWidget::update(const History& history)
 {
@@ -272,8 +282,13 @@ SchedulablesTreeWidget::update(const History& history)
   const Environment::Processes& processes = 
     Simulation::get_instance().get_history().get_last_environment().get_processes();
 
+
+  // Save expanded rows (FIXME: find a better way?)
+  map_expanded_rows(sigc::mem_fun(*this, &SchedulablesTreeWidget::_update_expanded_vector));
+
   _model->clear();
   
+
   for(Iseq<ProcessIt> pit = const_iseq(processes); pit; ++pit)
   {
     Process& p = *(*pit);
@@ -330,6 +345,14 @@ SchedulablesTreeWidget::update(const History& history)
       }
     }
   }
+
+  // Restore expanded rows
+  for(vector<Glib::ustring>::iterator it = _expanded_rows.begin(); it != _expanded_rows.end(); ++it)
+    expand_row(Gtk::TreeModel::Path(*it), false);
+
+  // We can clear it now, since until next update we won't need it.
+  _expanded_rows.clear();
+
 }
 
 void

src/schedulables_tree_widget.hh

@@ -40,6 +40,8 @@ namespace sgpem
 
 #include "backend/history_observer.hh"
 
+#include <vector>
+
 namespace sgpem
 {
   /**
@@ -118,6 +120,10 @@ namespace sgpem
     Gtk::Dialog* _add_thread_dialog;
     AddRequestDialog* _add_request_dialog;
     CellRendererTextMarkup _cell_renderer;
+
+    void _update_expanded_vector(Gtk::TreeView* tree_view, const Gtk::TreeModel::Path& path);
+
+    std::vector<Glib::ustring> _expanded_rows;
   };
 
 } //~ namespace sgpem