jpayne@68: import linecache
jpayne@68: import os
jpayne@68: import sys
jpayne@68: 
jpayne@68: import tkinter as tk
jpayne@68: 
jpayne@68: from idlelib.debugobj import ObjectTreeItem, make_objecttreeitem
jpayne@68: from idlelib.tree import TreeNode, TreeItem, ScrolledCanvas
jpayne@68: 
jpayne@68: def StackBrowser(root, flist=None, tb=None, top=None):
jpayne@68:     global sc, item, node  # For testing.
jpayne@68:     if top is None:
jpayne@68:         top = tk.Toplevel(root)
jpayne@68:     sc = ScrolledCanvas(top, bg="white", highlightthickness=0)
jpayne@68:     sc.frame.pack(expand=1, fill="both")
jpayne@68:     item = StackTreeItem(flist, tb)
jpayne@68:     node = TreeNode(sc.canvas, None, item)
jpayne@68:     node.expand()
jpayne@68: 
jpayne@68: 
jpayne@68: class StackTreeItem(TreeItem):
jpayne@68: 
jpayne@68:     def __init__(self, flist=None, tb=None):
jpayne@68:         self.flist = flist
jpayne@68:         self.stack = self.get_stack(tb)
jpayne@68:         self.text = self.get_exception()
jpayne@68: 
jpayne@68:     def get_stack(self, tb):
jpayne@68:         if tb is None:
jpayne@68:             tb = sys.last_traceback
jpayne@68:         stack = []
jpayne@68:         if tb and tb.tb_frame is None:
jpayne@68:             tb = tb.tb_next
jpayne@68:         while tb is not None:
jpayne@68:             stack.append((tb.tb_frame, tb.tb_lineno))
jpayne@68:             tb = tb.tb_next
jpayne@68:         return stack
jpayne@68: 
jpayne@68:     def get_exception(self):
jpayne@68:         type = sys.last_type
jpayne@68:         value = sys.last_value
jpayne@68:         if hasattr(type, "__name__"):
jpayne@68:             type = type.__name__
jpayne@68:         s = str(type)
jpayne@68:         if value is not None:
jpayne@68:             s = s + ": " + str(value)
jpayne@68:         return s
jpayne@68: 
jpayne@68:     def GetText(self):
jpayne@68:         return self.text
jpayne@68: 
jpayne@68:     def GetSubList(self):
jpayne@68:         sublist = []
jpayne@68:         for info in self.stack:
jpayne@68:             item = FrameTreeItem(info, self.flist)
jpayne@68:             sublist.append(item)
jpayne@68:         return sublist
jpayne@68: 
jpayne@68: 
jpayne@68: class FrameTreeItem(TreeItem):
jpayne@68: 
jpayne@68:     def __init__(self, info, flist):
jpayne@68:         self.info = info
jpayne@68:         self.flist = flist
jpayne@68: 
jpayne@68:     def GetText(self):
jpayne@68:         frame, lineno = self.info
jpayne@68:         try:
jpayne@68:             modname = frame.f_globals["__name__"]
jpayne@68:         except:
jpayne@68:             modname = "?"
jpayne@68:         code = frame.f_code
jpayne@68:         filename = code.co_filename
jpayne@68:         funcname = code.co_name
jpayne@68:         sourceline = linecache.getline(filename, lineno)
jpayne@68:         sourceline = sourceline.strip()
jpayne@68:         if funcname in ("?", "", None):
jpayne@68:             item = "%s, line %d: %s" % (modname, lineno, sourceline)
jpayne@68:         else:
jpayne@68:             item = "%s.%s(...), line %d: %s" % (modname, funcname,
jpayne@68:                                              lineno, sourceline)
jpayne@68:         return item
jpayne@68: 
jpayne@68:     def GetSubList(self):
jpayne@68:         frame, lineno = self.info
jpayne@68:         sublist = []
jpayne@68:         if frame.f_globals is not frame.f_locals:
jpayne@68:             item = VariablesTreeItem("<locals>", frame.f_locals, self.flist)
jpayne@68:             sublist.append(item)
jpayne@68:         item = VariablesTreeItem("<globals>", frame.f_globals, self.flist)
jpayne@68:         sublist.append(item)
jpayne@68:         return sublist
jpayne@68: 
jpayne@68:     def OnDoubleClick(self):
jpayne@68:         if self.flist:
jpayne@68:             frame, lineno = self.info
jpayne@68:             filename = frame.f_code.co_filename
jpayne@68:             if os.path.isfile(filename):
jpayne@68:                 self.flist.gotofileline(filename, lineno)
jpayne@68: 
jpayne@68: 
jpayne@68: class VariablesTreeItem(ObjectTreeItem):
jpayne@68: 
jpayne@68:     def GetText(self):
jpayne@68:         return self.labeltext
jpayne@68: 
jpayne@68:     def GetLabelText(self):
jpayne@68:         return None
jpayne@68: 
jpayne@68:     def IsExpandable(self):
jpayne@68:         return len(self.object) > 0
jpayne@68: 
jpayne@68:     def GetSubList(self):
jpayne@68:         sublist = []
jpayne@68:         for key in self.object.keys():
jpayne@68:             try:
jpayne@68:                 value = self.object[key]
jpayne@68:             except KeyError:
jpayne@68:                 continue
jpayne@68:             def setfunction(value, key=key, object=self.object):
jpayne@68:                 object[key] = value
jpayne@68:             item = make_objecttreeitem(key + " =", value, setfunction)
jpayne@68:             sublist.append(item)
jpayne@68:         return sublist
jpayne@68: 
jpayne@68: 
jpayne@68: def _stack_viewer(parent):  # htest #
jpayne@68:     from idlelib.pyshell import PyShellFileList
jpayne@68:     top = tk.Toplevel(parent)
jpayne@68:     top.title("Test StackViewer")
jpayne@68:     x, y = map(int, parent.geometry().split('+')[1:])
jpayne@68:     top.geometry("+%d+%d" % (x + 50, y + 175))
jpayne@68:     flist = PyShellFileList(top)
jpayne@68:     try: # to obtain a traceback object
jpayne@68:         intentional_name_error
jpayne@68:     except NameError:
jpayne@68:         exc_type, exc_value, exc_tb = sys.exc_info()
jpayne@68:     # inject stack trace to sys
jpayne@68:     sys.last_type = exc_type
jpayne@68:     sys.last_value = exc_value
jpayne@68:     sys.last_traceback = exc_tb
jpayne@68: 
jpayne@68:     StackBrowser(top, flist=flist, top=top, tb=exc_tb)
jpayne@68: 
jpayne@68:     # restore sys to original state
jpayne@68:     del sys.last_type
jpayne@68:     del sys.last_value
jpayne@68:     del sys.last_traceback
jpayne@68: 
jpayne@68: if __name__ == '__main__':
jpayne@68:     from unittest import main
jpayne@68:     main('idlelib.idle_test.test_stackviewer', verbosity=2, exit=False)
jpayne@68: 
jpayne@68:     from idlelib.idle_test.htest import run
jpayne@68:     run(_stack_viewer)