Fix the hint button to work with older versions of Sugar

The ‘help’ icon it used didn’t previously exist, and accelerator support for
ToggleToolButtons also didn’t exist.

1 files changed, 13 insertions, 2 deletions

diff --git a/PascalTriangle.activity/pascaltriangle.py b/PascalTriangle.activity/pascaltriangle.py
index 8a75d7e..d98ac73 100755
--- a/PascalTriangle.activity/pascaltriangle.py
+++ b/PascalTriangle.activity/pascaltriangle.py
@@ -443,10 +443,21 @@ class NewGameButton(ToolButton):
 
 class HintButton(ToggleToolButton):
     def __init__(self, activity, **kwargs):
-        ToggleToolButton.__init__(self, 'toolbar-help', **kwargs)
+        ToggleToolButton.__init__(self, 'show-hints', **kwargs)
         #self.props.tooltip = 'Show Hints'
         self.set_tooltip(_('Show Hints'))
-        self.props.accelerator = '<Ctrl>H'
+
+        # Add an accelerator. In later versions of Sugar, we can just set the
+        # 'accelerator' property instead.
+        #self.props.accelerator = '<Ctrl>H'
+        accel_group = activity.get_toplevel().sugar_accel_group
+        keyval, mask = Gtk.accelerator_parse('<Ctrl>H')
+        # the accelerator needs to be set at the child, so the Gtk.AccelLabel
+        # in the palette can pick it up.
+        accel_flags = Gtk.AccelFlags.LOCKED | Gtk.AccelFlags.VISIBLE
+        self.get_child().add_accelerator('clicked', accel_group,
+                                         keyval, mask, accel_flags)
+
         self.connect('clicked', self.__hint_button_clicked_cb, activity)
 
     def __hint_button_clicked_cb(self, button, activity):