New hyperlink manager to handle opening .rcf files

hyperlinkmgr.py

@@ -0,0 +1,33 @@
+from Tkinter import *
+
+class HyperlinkManager(object):
+    def __init__(self, textWidget, linkFunc):
+        self.txt = textWidget
+        self.linkfunc = linkFunc
+        self.txt.tag_config('hyper', foreground='blue', underline=1)
+        self.txt.tag_bind('hyper', '<Enter>', self._enter)
+        self.txt.tag_bind('hyper', '<Leave>', self._leave)
+        self.txt.tag_bind('hyper', '<Button-1>', self._click)
+        self.reset()
+
+    def reset(self):
+        self.filenames = {}
+
+    def add(self, filename):
+        # Add a link with associated filename. The link function returns tags
+        # to use in the associated text widget.
+        tag = 'hyper-%d' % len(self.filenames)
+        self.filenames[tag] = filename
+        return 'hyper', tag
+
+    def _enter(self, event):
+        self.txt.config(cursor='hand2')
+
+    def _leave(self, event):
+        self.txt.config(cursor='')
+
+    def _click(self, event):
+        for tag in self.txt.tag_names(CURRENT):
+            if tag.startswith('hyper-'):
+                self.linkfunc(self.filenames[tag])
+                return