diff -r 000000000000 -r ae805ac0140d python-2.5.2/win32/Lib/idlelib/StackViewer.py
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/python-2.5.2/win32/Lib/idlelib/StackViewer.py	Fri Apr 03 17:19:34 2009 +0100
@@ -0,0 +1,137 @@
+import os
+import sys
+import linecache
+
+from TreeWidget import TreeNode, TreeItem, ScrolledCanvas
+from ObjectBrowser import ObjectTreeItem, make_objecttreeitem
+
+def StackBrowser(root, flist=None, tb=None, top=None):
+    if top is None:
+        from Tkinter import Toplevel
+        top = Toplevel(root)
+    sc = ScrolledCanvas(top, bg="white", highlightthickness=0)
+    sc.frame.pack(expand=1, fill="both")
+    item = StackTreeItem(flist, tb)
+    node = TreeNode(sc.canvas, None, item)
+    node.expand()
+
+class StackTreeItem(TreeItem):
+
+    def __init__(self, flist=None, tb=None):
+        self.flist = flist
+        self.stack = self.get_stack(tb)
+        self.text = self.get_exception()
+
+    def get_stack(self, tb):
+        if tb is None:
+            tb = sys.last_traceback
+        stack = []
+        if tb and tb.tb_frame is None:
+            tb = tb.tb_next
+        while tb is not None:
+            stack.append((tb.tb_frame, tb.tb_lineno))
+            tb = tb.tb_next
+        return stack
+
+    def get_exception(self):
+        type = sys.last_type
+        value = sys.last_value
+        if hasattr(type, "__name__"):
+            type = type.__name__
+        s = str(type)
+        if value is not None:
+            s = s + ": " + str(value)
+        return s
+
+    def GetText(self):
+        return self.text
+
+    def GetSubList(self):
+        sublist = []
+        for info in self.stack:
+            item = FrameTreeItem(info, self.flist)
+            sublist.append(item)
+        return sublist
+
+class FrameTreeItem(TreeItem):
+
+    def __init__(self, info, flist):
+        self.info = info
+        self.flist = flist
+
+    def GetText(self):
+        frame, lineno = self.info
+        try:
+            modname = frame.f_globals["__name__"]
+        except:
+            modname = "?"
+        code = frame.f_code
+        filename = code.co_filename
+        funcname = code.co_name
+        sourceline = linecache.getline(filename, lineno)
+        sourceline = sourceline.strip()
+        if funcname in ("?", "", None):
+            item = "%s, line %d: %s" % (modname, lineno, sourceline)
+        else:
+            item = "%s.%s(...), line %d: %s" % (modname, funcname,
+                                             lineno, sourceline)
+        return item
+
+    def GetSubList(self):
+        frame, lineno = self.info
+        sublist = []
+        if frame.f_globals is not frame.f_locals:
+            item = VariablesTreeItem("<locals>", frame.f_locals, self.flist)
+            sublist.append(item)
+        item = VariablesTreeItem("<globals>", frame.f_globals, self.flist)
+        sublist.append(item)
+        return sublist
+
+    def OnDoubleClick(self):
+        if self.flist:
+            frame, lineno = self.info
+            filename = frame.f_code.co_filename
+            if os.path.isfile(filename):
+                self.flist.gotofileline(filename, lineno)
+
+class VariablesTreeItem(ObjectTreeItem):
+
+    def GetText(self):
+        return self.labeltext
+
+    def GetLabelText(self):
+        return None
+
+    def IsExpandable(self):
+        return len(self.object) > 0
+
+    def keys(self):
+        return self.object.keys()
+
+    def GetSubList(self):
+        sublist = []
+        for key in self.keys():
+            try:
+                value = self.object[key]
+            except KeyError:
+                continue
+            def setfunction(value, key=key, object=self.object):
+                object[key] = value
+            item = make_objecttreeitem(key + " =", value, setfunction)
+            sublist.append(item)
+        return sublist
+
+
+def _test():
+    try:
+        import testcode
+        reload(testcode)
+    except:
+        sys.last_type, sys.last_value, sys.last_traceback = sys.exc_info()
+    from Tkinter import Tk
+    root = Tk()
+    StackBrowser(None, top=root)
+    root.mainloop()
+
+if __name__ == "__main__":
+    _test()