Add novel data extraction function to index

nw/core/index.py

@@ -611,6 +611,14 @@ class NWIndex():
 
         return theRefs
 
+    def getNovelData(self, tHandle, sTitle):
+        """Return the novel data of a given handle and title.
+        """
+        if tHandle in self.novelIndex:
+            if sTitle in self.novelIndex[tHandle]:
+                return self.novelIndex[tHandle][sTitle]
+        return None
+
     def getBackReferenceList(self, tHandle):
         """Build a list of files referring back to our file, specified
         by tHandle.

nw/gui/outlinedetails.py

@@ -271,11 +271,10 @@ class GuiOutlineDetails(QScrollArea):
         """Update the content of the tree with the given handle and line
         number pointing to a header.
         """
-        try:
-            nwItem  = self.theProject.projTree[tHandle]
-            novIdx  = self.theIndex.novelIndex[tHandle][sTitle]
-            theRefs = self.theIndex.getReferences(tHandle, sTitle)
-        except Exception:
+        nwItem  = self.theProject.projTree[tHandle]
+        novIdx  = self.theIndex.getNovelData(tHandle, sTitle)
+        theRefs = self.theIndex.getReferences(tHandle, sTitle)
+        if nwItem is None or novIdx is None or theRefs == {}:
             return False
 
         if novIdx["level"] in self.LVL_MAP: