cpython/Tools/idle/OutputWindow.py
Guido van Rossum ba23bed340 Tweak the goto file/line command (in the right button menu in PyShell
and output windows) so that it if it doesn't succeed with the line
at the cursor, it tries the line before that.  This is handy with
tracebacks, where my natural tendency is to click in the displayed
source line rather than in the file/line indicator just above it.
Now I can indulge this tendency.

I factored out a helper and changed the error handling so that a
non-existing file is treated as if the line didn't match -- this is
handy because some function calls (e.g. "foo.bar(1)") match the grep
pattern.
2000-03-07 16:25:11 +00:00

149 lines
4.0 KiB
Python

from Tkinter import *
from EditorWindow import EditorWindow
import re
import tkMessageBox
class OutputWindow(EditorWindow):
"""An editor window that can serve as an output file.
Also the future base class for the Python shell window.
This class has no input facilities.
"""
def __init__(self, *args):
apply(EditorWindow.__init__, (self,) + args)
self.text.bind("<<goto-file-line>>", self.goto_file_line)
# Customize EditorWindow
def ispythonsource(self, filename):
# No colorization needed
return 0
def short_title(self):
return "Output"
def maybesave(self):
# Override base class method -- don't ask any questions
if self.get_saved():
return "yes"
else:
return "no"
# Act as output file
def write(self, s, tags=(), mark="insert"):
self.text.insert(mark, str(s), tags)
self.text.see(mark)
self.text.update()
def writelines(self, l):
map(self.write, l)
def flush(self):
pass
# Our own right-button menu
rmenu_specs = [
("Go to file/line", "<<goto-file-line>>"),
]
file_line_pats = [
r'file "([^"]*)", line (\d+)',
r'([^\s]+)\((\d+)\)',
r'([^\s]+):\s*(\d+):',
]
file_line_progs = None
def goto_file_line(self, event=None):
if self.file_line_progs is None:
l = []
for pat in self.file_line_pats:
l.append(re.compile(pat, re.IGNORECASE))
self.file_line_progs = l
# x, y = self.event.x, self.event.y
# self.text.mark_set("insert", "@%d,%d" % (x, y))
line = self.text.get("insert linestart", "insert lineend")
result = self._file_line_helper(line)
if not result:
# Try the previous line. This is handy e.g. in tracebacks,
# where you tend to right-click on the displayed source line
line = self.text.get("insert -1line linestart",
"insert -1line lineend")
result = self._file_line_helper(line)
if not result:
tkMessageBox.showerror(
"No special line",
"The line you point at doesn't look like "
"a valid file name followed by a line number.",
master=self.text)
return
filename, lineno = result
edit = self.flist.open(filename)
edit.gotoline(lineno)
def _file_line_helper(self, line):
for prog in self.file_line_progs:
m = prog.search(line)
if m:
break
else:
return None
filename, lineno = m.group(1, 2)
try:
f = open(filename, "r")
f.close()
except IOError:
return None
try:
return filename, int(lineno)
except TypeError:
return None
# These classes are currently not used but might come in handy
class OnDemandOutputWindow:
tagdefs = {
# XXX Should use IdlePrefs.ColorPrefs
"stdout": {"foreground": "blue"},
"stderr": {"foreground": "#007700"},
}
def __init__(self, flist):
self.flist = flist
self.owin = None
def write(self, s, tags, mark):
if not self.owin:
self.setup()
self.owin.write(s, tags, mark)
def setup(self):
self.owin = owin = OutputWindow(self.flist)
text = owin.text
for tag, cnf in self.tagdefs.items():
if cnf:
apply(text.tag_configure, (tag,), cnf)
text.tag_raise('sel')
self.write = self.owin.write
class PseudoFile:
def __init__(self, owin, tags, mark="end"):
self.owin = owin
self.tags = tags
self.mark = mark
def write(self, s):
self.owin.write(s, self.tags, self.mark)
def writelines(self, l):
map(self.write, l)
def flush(self):
pass