From: James Teh <jamie@jantrid.net>
Date: Tue, 24 Jan 2012 08:20:49 +0000 (+1000)
Subject: brailliantB driver: Don't even provide this display as an option (i.e. make check... 
X-Git-Tag: jpdev130418~1123
X-Git-Url: http://git.osdn.net/view?a=commitdiff_plain;h=be9edb6b435ffeb0c3cf973eeca3f13ce8bb77d9;p=nvdajp%2Fnvdajp.git

brailliantB driver: Don't even provide this display as an option (i.e. make check() return False) if no possible ports are found; i.e. no USB driver is installed and a display hasn't been paired via bluetooth.
This scan is very fast and unintrusive, so there's no reason not to do it.
---

diff --git a/source/brailleDisplayDrivers/brailliantB.py b/source/brailleDisplayDrivers/brailliantB.py
index ad78be350..f2213f23c 100644
--- a/source/brailleDisplayDrivers/brailliantB.py
+++ b/source/brailleDisplayDrivers/brailliantB.py
@@ -80,6 +80,11 @@ class BrailleDisplayDriver(braille.BrailleDisplayDriver):
 
 	@classmethod
 	def check(cls):
+		try:
+			next(_getPorts())
+		except StopIteration:
+			# No possible ports found.
+			return False
 		return True
 
 	def __init__(self):