# Rename to stackbrowser or possibly consolidate with browser.

import linecache

import os

import tkinter as tk

from idlelib.debugobj import ObjectTreeItem, make_objecttreeitem

from idlelib.tree import TreeNode, TreeItem, ScrolledCanvas

def StackBrowser(root, exc, flist=None, top=None):

global sc, item, node # For testing.

if top is None:

top = tk.Toplevel(root)

sc = ScrolledCanvas(top, bg="white", highlightthickness=0)

sc.frame.pack(expand=1, fill="both")

item = StackTreeItem(exc, flist)

node = TreeNode(sc.canvas, None, item)

node.expand()

class StackTreeItem(TreeItem):

def __init__(self, exc, flist=None):

self.flist = flist

self.stack = self.get_stack(None if exc is None else exc.__traceback__)

self.text = f"{type(exc).__name__}: {str(exc)}"

def get_stack(self, tb):

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 GetText(self): # Titlecase names are overrides.

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 GetSubList(self):

sublist = []

for key in self.object.keys(): # self.object not necessarily dict.

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 _stackbrowser(parent): # htest #

from idlelib.pyshell import PyShellFileList

top = tk.Toplevel(parent)

top.title("Test StackViewer")

x, y = map(int, parent.geometry().split('+')[1:])

top.geometry("+%d+%d" % (x + 50, y + 175))

flist = PyShellFileList(top)

try: # to obtain a traceback object

intentional_name_error

except NameError as e:

StackBrowser(top, e, flist=flist, top=top)

if __name__ == '__main__':

from unittest import main

main('idlelib.idle_test.test_stackviewer', verbosity=2, exit=False)

from idlelib.idle_test.htest import run

run(_stackbrowser)