1 files changed, 78 insertions, 0 deletions
diff --git a/src/tutorius/actions.py b/src/tutorius/actions.py
new file mode 100644
index 0000000..b52886d
--- /dev/null
+++ b/src/tutorius/actions.py
@@ -0,0 +1,78 @@
+# Copyright (C) 2009, Tutorius.org
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+"""
+This module defines Actions that can be done and undone on a state
+"""
+import gtk
+
+from gettext import gettext as _
+
+from sugar.graphics import icon
+
+from . import addon
+from .services import ObjectStore
+from .properties import *
+
+class Action(TPropContainer):
+    """Base class for Actions"""
+    def __init__(self):
+        TPropContainer.__init__(self)
+        self.position = (0,0)
+
+    def do(self, **kwargs):
+        """
+        Perform the action
+        """
+        raise NotImplementedError("Not implemented")
+
+    def undo(self):
+        """
+        Revert anything the action has changed
+        """
+        pass #Should raise NotImplemented?
+
+    def enter_editmode(self, **kwargs):
+        """
+        Enters edit mode. The action should display itself in some way,
+        without affecting the currently running application. The default is
+        a small box with the action icon.
+        """
+        meta = addon.get_addon_meta(type(self).__name__)
+
+        self.__edit_img = icon.Icon(icon_name=meta['icon'],
+                               icon_size=gtk.ICON_SIZE_LARGE_TOOLBAR)
+        ## Eventbox create a visible window for the icon, so it clips correctly
+        #self.__edit_img = gtk.EventBox()
+        #self.__edit_img.set_visible_window(True)
+        #self.__edit_img.add(actionicon)
+
+        x, y = self.position
+
+        self._handle = ObjectStore().activity._overlayer.put(
+            self.__edit_img,
+            x, y,
+            draggable=True,
+            position_cb=self._update_position)
+
+        self.__edit_img.show_all()
+
+    def _update_position(self, x, y):
+        self.position = [int(x), int(y)]
+
+    def exit_editmode(self, **kwargs):
+        ObjectStore().activity._overlayer.remove(self._handle)
+        self.__edit_img.destroy()
+