[pyatspi2] A to demonstrate pyatspi2 keypress listener registering Bug: https://bugzilla.gnome.org/show_bug.cgi

[Mike Gorse <mgorse src gnome org>]

commit 192638bfd0eeb446c14d5be6247fc474ee664ba0
Author: Magdalen Berns <thismagpie live com>
Date:   Mon Jun 3 18:38:35 2013 +0100

    A to demonstrate pyatspi2 keypress listener registering Bug: 
https://bugzilla.gnome.org/show_bug.cgi?id=701063

 examples/keypress.py |   56 ++++++++++++++++++++++++++++++++++++++++++++++++++
 1 files changed, 56 insertions(+), 0 deletions(-)
---
diff --git a/examples/keypress.py b/examples/keypress.py
new file mode 100644
index 0000000..262e588
--- /dev/null
+++ b/examples/keypress.py
@@ -0,0 +1,56 @@
+#!/usr/bin/python
+#
+# keypress.py
+#
+# This library is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public
+# License as published by the Free Software Foundation; either
+# version 2.1 of the License, or (at your option) any later version.
+#
+# This library 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
+# Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public
+# License along with this library; if not, write to the
+# Free Software Foundation, Inc., Franklin Street, Fifth Floor,
+# Boston MA  02110-1301 USA.
+#
+# An pyatspi2 example to demonstate a client listener for
+# Keypresses and releases in pyatspi2
+
+import pyatspi
+
+# Callback to print the active window on key press amd filter out the key release
+def on_key_input(event):
+
+       if event.type == pyatspi.KEY_RELEASED_EVENT:
+               return False
+       if event.event_string=='F4':
+               pyatspi.Registry.stop()
+               return True
+       if event.event_string =='F3':
+               print_tree(0, active_window())
+               return True
+       help_message()
+
+def active_window():
+       desktop = pyatspi.Registry.getDesktop(0)
+       for app in desktop:
+               for window in app:
+                       if window.getState().contains(pyatspi.STATE_ACTIVE):
+                               return window
+
+# Print hierarchy tree.
+def print_tree(level,root):
+       print ('%s-> %s' % (' ' * level, root))
+       for tree in root:
+               print_tree(level+1, tree)
+
+def help_message():
+       print('Press F3 to print the accessible hierarchy for the active window.\nPress F4 to exit.')
+
+help_message()
+pyatspi.Registry.registerKeystrokeListener(on_key_input, kind=(pyatspi.KEY_PRESSED_EVENT, 
pyatspi.KEY_RELEASED_EVENT))
+pyatspi.Registry.start()