Added document references pane to the bottom of the doc viewer

nw/project/index.py

@@ -319,6 +319,28 @@ class NWIndex():
 
         return True
 
+    def buildReferenceList(self, theHandle):
+
+        theRefs = {}
+
+        tItem = self.theProject.getItem(theHandle)
+        if theHandle is None:
+            return theRefs
+
+        theTag = None
+        for tTag in self.tagIndex:
+            if theHandle == self.tagIndex[tTag][1]:
+                theTag = tTag
+                break
+
+        if theTag is not None:
+            for tHandle in self.refIndex:
+                for nLine, tKey, tTag, nTitle in self.refIndex[tHandle]:
+                    if tTag == theTag:
+                        theRefs[tHandle] = nLine
+
+        return theRefs
+
     def buildTagNovelMap(self, theTags, theFilters=None):
 
         tagMap   = {}