New file

src/nailab/templates/new_strategy.py

@@ -0,0 +1,16 @@
+
+new_strategy_template = '''
+from naiback.strategy import Strategy
+
+class MyStrategy(Strategy):
+
+    def __init__(self):
+        super().__init__()
+
+    def execute(self):
+        for i in self.bars.index[200:]:
+            if self.last_position_is_active():
+                pass
+            else:
+                pass
+'''

src/nailab/ui/applicationwindow.py

@@ -4,6 +4,7 @@ from gi.repository import Gtk, GtkSource
 from nailab.data.datasource import DataSource
 from nailab.data.datasourcemanager import DataSourceManager
 from nailab.execution.executor import Executor
+from nailab.templates.new_strategy import new_strategy_template
 
 from .resultstable import ResultsTableWidget
 from .tabmanager import TabManager
@@ -18,6 +19,7 @@ class ApplicationWindow:
 
         handlers = {
                 'on_ApplicationWindow_delete_event' : Gtk.main_quit,
+                'on_menuNew' : self.new_file,
                 'on_OpenFile' : self.open_file,
                 'on_menuSave' : self.save_file,
                 'on_menuSaveAs' : self.save_file_as,
@@ -27,6 +29,9 @@ class ApplicationWindow:
         builder.connect_signals(handlers)
         self.window.show_all()
 
+    def new_file(self, arg):
+        self.tab_manager.new_from_template(new_strategy_template)
+
     def open_file(self, arg):
         dlg = Gtk.FileChooserDialog('Open file', self.window, Gtk.FileChooserAction.OPEN,
                 (Gtk.STOCK_CANCEL, Gtk.ResponseType.CANCEL,

src/nailab/ui/tabmanager.py

@@ -34,12 +34,23 @@ class TabManager(GObject.Object):
         index = self.notebook.append_page(widget, header)
         self.notebook.set_current_page(index)
 
-    def new_tab(self, source_file):
+    def _read_source_file(self, source_file):
+        if source_file is not None:
             with open(source_file, 'r') as f:
+                return f.read()
+        else:
+            return None
+
+
+    def new_tab(self, source_file):
         tab_id = self._next_tab_id()
-            self.source_paths[tab_id] = source_file
         (sv, sv_controller) = self._init_sourceeditor()
+
+        source = self._read_source_file(source_file)
+        if source is not None:
             sv_controller.set_source_text(f.read())
+
+        self.source_paths[tab_id] = source_file
         self.source_controllers[tab_id] = sv_controller
         self.widgets[tab_id] = sv
         sv.show_all()
@@ -59,6 +70,7 @@ class TabManager(GObject.Object):
         header.show_all()
         index = self.notebook.append_page(sv, header)
         self.notebook.set_current_page(index)
+        return tab_id
 
     def close_cb(self, arg, tab_id):
         index = self._widget_num_by_tab_id(tab_id)
@@ -78,6 +90,10 @@ class TabManager(GObject.Object):
 
         return None
 
+    def new_from_template(self, template):
+        tab_id = self.new_tab(None)
+        self.source_controllers[tab_id].set_source_text(template)
+
     def save_current(self):
         index = self.notebook.get_current_page()
         w = self.notebook.get_nth_page(index)

ui/nailab.glade

@@ -96,12 +96,13 @@
                     <property name="visible">True</property>
                     <property name="can_focus">False</property>
                     <child>
-                      <object class="GtkImageMenuItem" id="imagemenuitem21">
+                      <object class="GtkImageMenuItem" id="menuNew">
                         <property name="label">gtk-new</property>
                         <property name="visible">True</property>
                         <property name="can_focus">False</property>
                         <property name="use_underline">True</property>
                         <property name="use_stock">True</property>
+                        <signal name="activate" handler="on_menuNew" swapped="no"/>
                       </object>
                     </child>
                     <child>