From 6f7c7e93103d37cf2937422df71bcb8e5ec96a83 Mon Sep 17 00:00:00 2001
From: Gregory Jefferis <jefferis@gmail.com>
Date: Thu, 16 Apr 2015 07:39:24 +0100
Subject: [PATCH] more flexible path status colours/messages

* closes https://github.com/jefferis/fiji-cmtk-gui/issues/9
---
 CMTK_Registration_GUI.py | 32 +++++++++++++++++++-------------
 1 file changed, 19 insertions(+), 13 deletions(-)

diff --git a/CMTK_Registration_GUI.py b/CMTK_Registration_GUI.py
index 3a99b0d..cb263dc 100644
--- a/CMTK_Registration_GUI.py
+++ b/CMTK_Registration_GUI.py
@@ -29,26 +29,32 @@ def textValueChanged(self, tvc):
 			statusf.setText('Please choose valid root directory')
 			statusf.setForeground(Color.red)
 			return
-		imgdir = os.path.join(regroot,'images')
-		if os.path.exists(imgdir):
+		# check if we already have a sensible images dir - if not, then set
+		imgdir = imgdirf.getText()
+		if len(imgdir)==0 or not os.path.exists(imgdir):
+			imgdir = os.path.join(regroot,'images')
 			imgdirf.setText(imgdir)
-			imgdirf.setForeground(Color.black)
+		else:
 			statusf.setText('')
-			return
-		imgdirf.setForeground(Color.red)
-		statusf.setText('Please choose input image/directory')
-		statusf.setForeground(Color.red)
 
 class ImageDirListener(TextListener):
 	def textValueChanged(self, tvc):
-		regroot = regrootf.getText()
-		if len(regroot)>0 and os.path.exists(regroot):
-			#print "regroot:"+regroot+ " exists!" 
-			return
 		imgdir = imgdirf.getText()
-		if len(imgdir)>0 and os.path.exists(imgdir):
-			regrootf.setText(os.path.dirname(imgdir))
+		# no comment if unset
+		if len(imgdir)==0:
+			statusf.setText('')
 			return
+		# no comment if unset
+		if os.path.exists(imgdir):
+			statusf.setText('')
+			imgdirf.setForeground(Color.black)
+			regroot = regrootf.getText()
+			if len(regroot)==0 or not os.path.exists(regroot):
+				regrootf.setText(os.path.dirname(imgdir))
+		else:
+			imgdirf.setForeground(Color.red)
+			statusf.setText('Please choose valid images directory')
+			statusf.setForeground(Color.red)
 
 class OuputSuffixListener(TextListener):
 	def textValueChanged(self, tvc):