Web   ·   Wiki   ·   Activities   ·   Blog   ·   Lists   ·   Chat   ·   Meeting   ·   Bugs   ·   Git   ·   Translate   ·   Archive   ·   People   ·   Donate
summaryrefslogtreecommitdiffstats
path: root/addons/gtkwidgettypefilter.py
diff options
context:
space:
mode:
Diffstat (limited to 'addons/gtkwidgettypefilter.py')
-rw-r--r--addons/gtkwidgettypefilter.py100
1 files changed, 100 insertions, 0 deletions
diff --git a/addons/gtkwidgettypefilter.py b/addons/gtkwidgettypefilter.py
new file mode 100644
index 0000000..16673c1
--- /dev/null
+++ b/addons/gtkwidgettypefilter.py
@@ -0,0 +1,100 @@
+# 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
+
+from sugar.tutorius.filters import *
+from sugar.tutorius.properties import *
+from sugar.tutorius.services import ObjectStore
+from sugar.tutorius.gtkutils import find_widget
+
+import logging
+logger = logging.getLogger("GtkWidgetTypeFilter")
+
+class GtkWidgetTypeFilter(EventFilter):
+ """
+ Event Filter that listens for keystrokes on a widget
+ """
+ object_id = TStringProperty("")
+ text = TStringProperty("")
+ strokes = TArrayProperty([])
+
+ def __init__(self, next_state, object_id, text=None, strokes=None):
+ """Constructor
+ @param next_state default EventFilter param, passed on to EventFilter
+ @param object_id object tree-ish identifier
+ @param text resulting text expected
+ @param strokes list of strokes expected
+
+ At least one of text or strokes must be supplied
+ """
+ super(GtkWidgetTypeFilter, self).__init__(next_state)
+ self.object_id = object_id
+ self.text = text
+ self._captext = ""
+ self.strokes = strokes
+ self._capstrokes = []
+ self._widget = None
+ self._handler_id = None
+
+ def install_handlers(self, callback, **kwargs):
+ """install handlers
+ @param callback default EventFilter callback arg
+ """
+ super(GtkWidgetTypeFilter, self).install_handlers(callback, **kwargs)
+ logger.debug("~~~GtkWidgetTypeFilter install")
+ activity = ObjectStore().activity
+ if activity is None:
+ logger.error("No activity")
+ raise RuntimeWarning("no activity in the objectstore")
+
+ self._widget = find_widget(activity, self.object_id)
+ if self._widget:
+ self._handler_id= self._widget.connect("key-press-event",self.__keypress_cb)
+ logger.debug("~~~Connected handler %d on %s" % (self._handler_id,self.object_id) )
+
+ def remove_handlers(self):
+ """remove handlers"""
+ super(GtkWidgetTypeFilter, self).remove_handlers()
+ #if an event was connected, disconnect it
+ if self._handler_id:
+ self._widget.handler_disconnect(self._handler_id)
+ self._handler_id=None
+
+ def __keypress_cb(self, widget, event, *args):
+ """keypress callback"""
+ logger.debug("~~~keypressed!")
+ key = event.keyval
+ keystr = event.string
+ logger.debug("~~~Got key: " + str(key) + ":"+ keystr)
+ self._capstrokes += [key]
+ #TODO Treat other stuff, such as arrows
+ if key == gtk.keysyms.BackSpace:
+ self._captext = self._captext[:-1]
+ else:
+ self._captext = self._captext + keystr
+
+ logger.debug("~~~Current state: " + str(self._capstrokes) + ":" + str(self._captext))
+ if not self.strokes is None and self.strokes in self._capstrokes:
+ self.do_callback()
+ if not self.text is None and self.text in self._captext:
+ self.do_callback()
+
+__event__ = {
+ 'name' : 'GtkWidgetTypeFilter',
+ 'display_name' : 'Widget Filter',
+ 'icon' : '',
+ 'class' : GtkWidgetTypeFilter,
+ 'mandatory_props' : ['next_state', 'object_id']
+}