mirror of https://github.com/python/cpython
289 lines
9.3 KiB
Python
289 lines
9.3 KiB
Python
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import string
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import sys
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import os
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from Tkinter import *
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import linecache
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from repr import Repr
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class StackViewer:
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def __init__(self, root=None, flist=None):
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self.flist = flist
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# Create root and/or toplevel window
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if not root:
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import Tkinter
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root = Tkinter._default_root
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if not root:
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root = top = Tk()
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else:
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top = Toplevel(root)
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self.root = root
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self.top = top
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top.wm_title("Stack viewer")
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# Create top frame, with scrollbar and listbox
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self.topframe = Frame(top)
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self.topframe.pack(fill="both", expand=1)
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self.vbar = Scrollbar(self.topframe, name="vbar")
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self.vbar.pack(side="right", fill="y")
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self.listbox = Listbox(self.topframe, exportselection=0,
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takefocus=1, width=60)
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self.listbox.pack(expand=1, fill="both")
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# Tie listbox and scrollbar together
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self.vbar["command"] = self.listbox.yview
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self.listbox["yscrollcommand"] = self.vbar.set
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# Bind events to the list box
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self.listbox.bind("<ButtonRelease-1>", self.click_event)
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self.listbox.bind("<Double-ButtonRelease-1>", self.double_click_event)
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self.listbox.bind("<ButtonPress-3>", self.popup_event)
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self.listbox.bind("<Key-Up>", self.up_event)
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self.listbox.bind("<Key-Down>", self.down_event)
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# Load the stack
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linecache.checkcache()
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stack = getstack()
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self.load_stack(stack)
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def load_stack(self, stack):
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self.stack = stack
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l = self.listbox
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l.delete(0, END)
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if len(stack) > 10:
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l["height"] = 10
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self.topframe.pack(expand=1)
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else:
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l["height"] = len(stack)
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self.topframe.pack(expand=0)
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for frame, lineno in stack:
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try:
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modname = frame.f_globals["__name__"]
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except:
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modname = "?"
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code = frame.f_code
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filename = code.co_filename
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funcname = code.co_name
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sourceline = linecache.getline(filename, lineno)
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sourceline = string.strip(sourceline)
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if funcname in ("?", "", None):
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item = "%s, line %d: %s" % (modname, lineno, sourceline)
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else:
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item = "%s.%s(), line %d: %s" % (modname, funcname,
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lineno, sourceline)
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l.insert(END, item)
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l.focus_set()
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l.selection_clear(0, "end")
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l.activate("end")
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l.see("end")
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rmenu = None
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def click_event(self, event):
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self.listbox.activate("@%d,%d" % (event.x, event.y))
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self.show_stack_frame()
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return "break"
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def popup_event(self, event):
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if not self.rmenu:
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self.make_menu()
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rmenu = self.rmenu
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self.event = event
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self.listbox.activate("@%d,%d" % (event.x, event.y))
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rmenu.tk_popup(event.x_root, event.y_root)
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def make_menu(self):
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rmenu = Menu(self.top, tearoff=0)
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rmenu.add_command(label="Go to source line",
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command=self.goto_source_line)
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rmenu.add_command(label="Show stack frame",
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command=self.show_stack_frame)
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self.rmenu = rmenu
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def goto_source_line(self):
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index = self.listbox.index("active")
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self.show_source(index)
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def show_stack_frame(self):
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index = self.listbox.index("active")
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self.show_frame(index)
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def double_click_event(self, event):
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index = self.listbox.index("active")
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self.show_source(index)
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return "break"
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def up_event(self, event):
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index = self.listbox.index("active") - 1
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if index < 0:
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self.top.bell()
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return "break"
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self.show_frame(index)
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return "break"
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def down_event(self, event):
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index = self.listbox.index("active") + 1
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if index >= len(self.stack):
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self.top.bell()
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return "break"
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self.show_frame(index)
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return "break"
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def show_source(self, index):
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if not 0 <= index < len(self.stack):
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self.top.bell()
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return
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frame, lineno = self.stack[index]
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code = frame.f_code
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filename = code.co_filename
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if not self.flist:
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self.top.bell()
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return
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if not os.path.exists(filename):
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self.top.bell()
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return
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edit = self.flist.open(filename)
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edit.gotoline(lineno)
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localsframe = None
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localsviewer = None
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localsdict = None
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globalsframe = None
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globalsviewer = None
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globalsdict = None
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curframe = None
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def show_frame(self, index):
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if not 0 <= index < len(self.stack):
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self.top.bell()
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return
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self.listbox.selection_clear(0, "end")
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self.listbox.selection_set(index)
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self.listbox.activate(index)
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self.listbox.see(index)
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self.listbox.focus_set()
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frame, lineno = self.stack[index]
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if frame is self.curframe:
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return
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self.curframe = None
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if frame.f_globals is not self.globalsdict:
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self.show_globals(frame)
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self.show_locals(frame)
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self.curframe = frame
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def show_globals(self, frame):
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title = "Global Variables"
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if frame.f_globals.has_key("__name__"):
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try:
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name = str(frame.f_globals["__name__"]) + ""
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except:
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name = ""
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if name:
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title = title + " in module " + name
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self.globalsdict = None
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if self.globalsviewer:
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self.globalsviewer.close()
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self.globalsviewer = None
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if not self.globalsframe:
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self.globalsframe = Frame(self.top)
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self.globalsdict = frame.f_globals
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self.globalsviewer = NamespaceViewer(
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self.globalsframe,
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title,
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self.globalsdict)
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self.globalsframe.pack(fill="both", side="bottom")
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def show_locals(self, frame):
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self.localsdict = None
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if self.localsviewer:
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self.localsviewer.close()
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self.localsviewer = None
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if frame.f_locals is not frame.f_globals:
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title = "Local Variables"
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code = frame.f_code
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funcname = code.co_name
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if funcname not in ("?", "", None):
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title = title + " in " + funcname
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if not self.localsframe:
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self.localsframe = Frame(self.top)
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self.localsdict = frame.f_locals
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self.localsviewer = NamespaceViewer(
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self.localsframe,
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title,
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self.localsdict)
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self.localsframe.pack(fill="both", side="top")
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else:
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if self.localsframe:
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self.localsframe.forget()
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def getstack(t=None, f=None):
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if t is None:
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t = sys.last_traceback
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stack = []
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if t and t.tb_frame is f:
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t = t.tb_next
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while f is not None:
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stack.append((f, f.f_lineno))
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if f is self.botframe:
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break
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f = f.f_back
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stack.reverse()
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while t is not None:
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stack.append((t.tb_frame, t.tb_lineno))
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t = t.tb_next
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return stack
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class NamespaceViewer:
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def __init__(self, frame, title, dict):
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width = 0
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height = 20*len(dict) # XXX 20 == observed height of Entry widget
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self.frame = frame
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self.title = title
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self.dict = dict
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self.repr = Repr()
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self.repr.maxstring = 60
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self.repr.maxother = 60
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self.label = Label(frame, text=title, borderwidth=2, relief="groove")
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self.label.pack(fill="x")
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self.vbar = vbar = Scrollbar(frame, name="vbar")
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vbar.pack(side="right", fill="y")
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self.canvas = canvas = Canvas(frame,
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height=min(300, max(40, height)),
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scrollregion=(0, 0, width, height))
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canvas.pack(side="left", fill="both", expand=1)
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vbar["command"] = canvas.yview
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canvas["yscrollcommand"] = vbar.set
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self.subframe = subframe = Frame(canvas)
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self.sfid = canvas.create_window(0, 0, window=subframe, anchor="nw")
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names = dict.keys()
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names.sort()
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row = 0
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for name in names:
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value = dict[name]
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svalue = self.repr.repr(value) # repr(value)
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l = Label(subframe, text=name)
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l.grid(row=row, column=0, sticky="nw")
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## l = Label(subframe, text=svalue, justify="l", wraplength=300)
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l = Entry(subframe, width=0, borderwidth=0)
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l.insert(0, svalue)
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## l["state"] = "disabled"
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l.grid(row=row, column=1, sticky="nw")
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row = row+1
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frame.update_idletasks() # Alas!
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width = subframe.winfo_reqwidth()
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height = subframe.winfo_reqheight()
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canvas["scrollregion"] = (0, 0, width, height)
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if height > 300:
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canvas["height"] = 300
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frame.pack(expand=1)
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else:
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canvas["height"] = height
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frame.pack(expand=0)
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def close(self):
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for c in self.subframe, self.label, self.vbar, self.canvas:
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try:
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c.destroy()
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except:
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pass
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