From 63b11afb9f9ce713b3a0c7a9fdce5630cdf55ad3 Mon Sep 17 00:00:00 2001
From: Paul McCarthy <pauld.mccarthy@gmail.com>
Date: Wed, 9 Nov 2016 17:00:18 +0000
Subject: [PATCH] Function to check if a widget has been destroyed, works under
wxPy and wxPho.
---
fsl/utils/platform.py | 28 ++++++++++++++++++++++++++++
1 file changed, 28 insertions(+)
diff --git a/fsl/utils/platform.py b/fsl/utils/platform.py
index 382d7bb92..f015a9e0b 100644
--- a/fsl/utils/platform.py
+++ b/fsl/utils/platform.py
@@ -8,6 +8,14 @@
of information about the current platform we are running on. A single
``Platform`` instance is created when this module is first imported, and
is available as a module attribute called :attr:`platform`.
+
+This module is also home to the following utility functions which abstract
+away various platform differences:
+
+.. autosummary::
+ :nosignatures:
+
+ isWidgetAlive
"""
@@ -71,6 +79,25 @@ are running the Linux/GTK wx build.
"""
+def isWidgetAlive(widget):
+ """Returns ``True`` if the given ``wx.Window`` object is "alive" (i.e.
+ has not been destroyed), ``False`` otherwise. Works in both wxPython
+ and wxPython/Phoenix.
+ """
+
+ import wx
+
+ if platform.wxFlavour == WX_PHOENIX:
+ return bool(widget)
+
+ elif platform.wxFlavour == WX_PYTHON:
+ try:
+ widget.IsEnabled()
+ return True
+ except wx.PyDeadObjectError:
+ return False
+
+
class Platform(notifier.Notifier):
"""The ``Platform`` class contains a handful of properties which contain
information about the platform we are running on.
@@ -107,6 +134,7 @@ class Platform(notifier.Notifier):
self.WX_MAC_COCOA = WX_MAC_COCOA
self.WX_MAC_CARBON = WX_MAC_CARBON
self.WX_GTK = WX_GTK
+ self.isWidgetAlive = isWidgetAlive
self.__fsldir = os.environ.get('FSLDIR', None)
self.__inSSHSession = False
--
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