From af76cb26cba75684928fb817f9486883fad11eb9 Mon Sep 17 00:00:00 2001
From: Zachary Sloan
Date: Wed, 10 Oct 2012 17:45:25 -0500
Subject: Finished the remove samples by index validation

---
 wqflask/wqflask/static/new/javascript/validation.coffee | 15 ++++++++++-----
 1 file changed, 10 insertions(+), 5 deletions(-)

diff --git a/wqflask/wqflask/static/new/javascript/validation.coffee b/wqflask/wqflask/static/new/javascript/validation.coffee
index a2036c1d..f28e9bd7 100644
--- a/wqflask/wqflask/static/new/javascript/validation.coffee
+++ b/wqflask/wqflask/static/new/javascript/validation.coffee
@@ -1,18 +1,23 @@
 $ ->
 
     remove_samples_is_valid = (input)->
+        #Validate if input is empty or just white spaces
+        if _.trim(input).length == 0 
+            return true
         splats = input.split(",")
         new_splats = (_.trim(input) for input in splats)
         console.log("new_splats:", new_splats)
-        pattern = /^\d+\s*(?:-\s*\d+)?\s*$/
+        pattern = /^\d+\s*(?:-\s*\d+)?\s*$/ #Pattern like 3, 10-15, 24
         for splat in new_splats
             console.log("splat is:", splat)
             if not splat.match(pattern)
                 return false
         return true
-      
-       
+
     validate_remove_samples = ->
+        ###
+        Check if input for the remove samples function is valid and notify the user if not
+        ###
         input = $('#remove_samples_field').val()
         console.log("input is:", input)
         if remove_samples_is_valid(input)
@@ -21,6 +26,6 @@ $ ->
         else
             console.log("input isn't valid")
             $('#remove_samples_invalid').show()
-    
-    
+
+
     $('#remove_samples_field').change(validate_remove_samples)
\ No newline at end of file
-- 
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