From c2d2919bae8a029910ab23fdc5a6c1e177d6ce9f Mon Sep 17 00:00:00 2001
From: Tony S Yu <tsyu80@gmail.com>
Date: Tue, 24 Jul 2012 01:31:47 -0400
Subject: [PATCH] BUG: Don't override `image_filter` method if defined by
 subclass

---
 skimage/viewer/plugins/base.py | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/skimage/viewer/plugins/base.py b/skimage/viewer/plugins/base.py
index d9649b22..cb76ffc3 100644
--- a/skimage/viewer/plugins/base.py
+++ b/skimage/viewer/plugins/base.py
@@ -32,7 +32,9 @@ class Plugin(QtGui.QDialog):
         super(Plugin, self).__init__()
 
         self.image_viewer = None
-        self.image_filter = image_filter
+        # If subclass defines `image_filter` method ignore input.
+        if not hasattr(self, 'image_filter'):
+            self.image_filter = image_filter
 
         self.setWindowTitle(self.name)
         self.layout = QtGui.QGridLayout(self)