Use button_press virtual method instead of the connect_after hacks.

sugar/graphics/canvasicon.py

@@ -176,7 +176,6 @@ class CanvasIcon(hippo.CanvasBox, hippo.CanvasItem):
 
         hippo.CanvasBox.__init__(self, **kwargs)
 
-        self.connect_after('button-press-event', self._button_press_event_cb)
         self.connect_after('motion-notify-event', self._motion_notify_event_cb)
 
     def _clear_buffers(self):
@@ -326,9 +325,9 @@ class CanvasIcon(hippo.CanvasBox, hippo.CanvasItem):
         [width, height] = self._get_icon_size()
         return height
 
-    def _button_press_event_cb(self, item, event):
+    def do_button_press_event(self, event):
         item.emit_activated()
-        return False
+        return True
 
     def get_popup(self):
         if self._tooltip:

sugar/graphics/iconbutton.py

@@ -27,7 +27,7 @@ from sugar.graphics import color
 STANDARD_SIZE = 0
 SMALL_SIZE    = 1
 
-class IconButton(CanvasIcon):
+class IconButton(CanvasIcon, hippo.CanvasItem):
     __gtype_name__ = 'SugarIconButton'    
 
     __gproperties__ = {
@@ -45,9 +45,6 @@ class IconButton(CanvasIcon):
 
         self._set_size(STANDARD_SIZE)
 
-        self.connect_after('button-press-event',
-                           self._icon_button_button_press_event_cb)
-
     def _set_size(self, size):
         if size == SMALL_SIZE:
             self.props.box_width = -1
@@ -72,7 +69,7 @@ class IconButton(CanvasIcon):
         else:
             return CanvasIcon.do_get_property(self, pspec)
 
-    def _icon_button_button_press_event_cb(self, widget, event):
+    def do_button_press_event(self, event):
         if self._active:
             self.emit_activated()
         return True

sugar/graphics/toggleiconbutton.py

@@ -16,11 +16,12 @@
 # Boston, MA 02111-1307, USA.
 
 import gobject
+import hippo
 
 from sugar.graphics.iconbutton import IconButton
 from sugar.graphics import color
             
-class ToggleIconButton(IconButton):
+class ToggleIconButton(IconButton, hippo.CanvasItem):
     __gtype_name__ = 'SugarToggleIconButton'    
 
     __gproperties__ = {
@@ -33,9 +34,6 @@ class ToggleIconButton(IconButton):
 
         IconButton.__init__(self, **kwargs)
 
-        self.connect('button-press-event',
-                     self._toggle_icon_button_press_event_cb)
-
     def _get_bg_color(self):
         if self._toggled:
             col = color.TOGGLE_BUTTON_BACKGROUND
@@ -60,7 +58,7 @@ class ToggleIconButton(IconButton):
 
         return IconButton.do_get_property(self, pspec)
 
-    def _toggle_icon_button_press_event_cb(self, widget, event):
+    def do_button_press_event(self, event):
         self.props.toggled = not self._toggled
         return True