Added context menu to NavigatorView that allows reading FTSV datasets directly, i.e. without

adding a function in the workflow for this.

fluents/navigator.py

@@ -3,6 +3,7 @@ import gtk
 import gobject
 import plots
 import time
+import fluents
 import dataset, logger, plots, project, workflow
 
 class NavigatorView (gtk.TreeView):
@@ -31,6 +32,11 @@ class NavigatorView (gtk.TreeView):
         #        self.connect('cursor_changed', self.cursor_changed_handler)
         self.connect('row_activated', self.row_activated_handler)
 
+        # Activate context menu
+        self.menu = NavigatorMenu(self)
+        self.connect('popup_menu', self.popup_menu)
+        self.connect('button_press_event', self.mouse_popup_menu)
+
         self.textrenderer = textrenderer = gtk.CellRendererText()
         pixbufrenderer = gtk.CellRendererPixbuf()
         self.object_col = gtk.TreeViewColumn('Object')
@@ -151,3 +157,57 @@ class NavigatorView (gtk.TreeView):
             t = type(obj)
             logger.log('debug', 'Activated datatype was %s. Don\'t know what to do.' % t)
 
+    def popup_menu(self, *rest):
+        self.menu.popup(None, None, None, 0, 0)
+
+    def mouse_popup_menu(self, widget, event):
+        if event.button == 3:
+            self.menu.popup(None, None, None, event.button, event.time)
+
+
+class NavigatorMenu(gtk.Menu):
+    def __init__(self, navigator):
+        gtk.Menu.__init__(self)
+        self.navigaotor = navigator
+        
+        # Populate menu
+        self.load_item = gtk.MenuItem('Load dataset')
+        self.load_item.connect('activate', on_load_dataset, navigator)
+        self.append(self.load_item)
+        self.load_item.show()
+
+        self.save_item = gtk.MenuItem('Save dataset')
+        self.save_item.connect('activate', on_save_dataset, navigator)
+        self.append(self.save_item)
+
+        
+def on_load_dataset(item, navigator):
+    dialog = gtk.FileChooserDialog('Load dataset')
+    dialog.add_buttons(gtk.STOCK_CANCEL, gtk.RESPONSE_CANCEL, gtk.STOCK_OPEN, gtk.RESPONSE_OK)
+    retval = dialog.run()
+    if retval in [gtk.RESPONSE_CANCEL, gtk.RESPONSE_DELETE_EVENT]:
+        print "Cancelled"
+    elif retval == gtk.RESPONSE_OK:
+        print "OK"
+        print dialog.get_filename()
+        fd = open(dialog.get_filename())
+        ds = dataset.read_ftsv(fd)
+        fd.close()
+
+        if isinstance(ds, dataset.GraphDataset):
+            icon = fluents.icon_factory.get("graph_dataset")
+        elif isinstance(ds, dataset.CategoryDataset):
+            icon = fluents.icon_factory.get("category_dataset")
+        else:
+            icon = fluents.icon_factory.get("dataset")
+
+        project = navigator.project
+        project.add_dataset(ds)
+        project.data_tree_insert(None, ds.get_name(), ds, None, "black", icon)
+    else:
+        print "unknown; ", retval 
+    dialog.destroy()
+
+def on_save_dataset(item):
+    pass  
+