1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
|
"""Simple text browser for IDLE
"""
from tkinter import Toplevel, Frame, Button, Text
from tkinter import DISABLED, SUNKEN, VERTICAL, WORD
from tkinter import RIGHT, LEFT, TOP, BOTTOM, BOTH, X, Y
from tkinter.ttk import Scrollbar
from tkinter.messagebox import showerror
class TextViewer(Toplevel):
"A simple text viewer dialog for IDLE."
def __init__(self, parent, title, text, modal=True,
_htest=False, _utest=False):
"""Show the given text in a scrollable window with a 'close' button.
If modal is left True, users cannot interact with other windows
until the textview window is closed.
parent - parent of this dialog
title - string which is title of popup dialog
text - text to display in dialog
_htest - bool; change box location when running htest.
_utest - bool; don't wait_window when running unittest.
"""
Toplevel.__init__(self, parent)
self.configure(borderwidth=5)
# Place dialog below parent if running htest.
self.geometry("=%dx%d+%d+%d" % (750, 500,
parent.winfo_rootx() + 10,
parent.winfo_rooty() + (10 if not _htest else 100)))
# TODO: get fg/bg from theme.
self.bg = '#ffffff'
self.fg = '#000000'
self.create_widgets()
self.title(title)
self.protocol("WM_DELETE_WINDOW", self.ok)
self.parent = parent
self.text.focus_set()
# Bind keys for closing this dialog.
self.bind('<Return>', self.ok)
self.bind('<Escape>', self.ok)
self.text.insert(0.0, text)
self.text.config(state=DISABLED)
if modal:
self.transient(parent)
self.grab_set()
if not _utest:
self.wait_window()
def create_widgets(self):
"Create Frame with Text (with vertical Scrollbar) and Button."
frame = Frame(self, relief=SUNKEN, height=700)
frame_buttons = Frame(self)
self.button_ok = Button(frame_buttons, text='Close',
command=self.ok, takefocus=False)
self.scrollbar = Scrollbar(frame, orient=VERTICAL, takefocus=False)
self.text = Text(frame, wrap=WORD, highlightthickness=0,
fg=self.fg, bg=self.bg)
self.scrollbar.config(command=self.text.yview)
self.text.config(yscrollcommand=self.scrollbar.set)
self.button_ok.pack()
self.scrollbar.pack(side=RIGHT, fill=Y)
self.text.pack(side=LEFT, expand=True, fill=BOTH)
frame_buttons.pack(side=BOTTOM, fill=X)
frame.pack(side=TOP, expand=True, fill=BOTH)
def ok(self, event=None):
"""Dismiss text viewer dialog."""
self.destroy()
def view_text(parent, title, text, modal=True, _utest=False):
"""Create TextViewer for given text.
parent - parent of this dialog
title - string which is the title of popup dialog
text - text to display in this dialog
modal - controls if users can interact with other windows while this
dialog is displayed
_utest - bool; controls wait_window on unittest
"""
return TextViewer(parent, title, text, modal, _utest=_utest)
def view_file(parent, title, filename, encoding=None, modal=True, _utest=False):
"""Create TextViewer for text in filename.
Return error message if file cannot be read. Otherwise calls view_text
with contents of the file.
"""
try:
with open(filename, 'r', encoding=encoding) as file:
contents = file.read()
except OSError:
showerror(title='File Load Error',
message='Unable to load file %r .' % filename,
parent=parent)
except UnicodeDecodeError as err:
showerror(title='Unicode Decode Error',
message=str(err),
parent=parent)
else:
return view_text(parent, title, contents, modal, _utest=_utest)
return None
if __name__ == '__main__':
import unittest
unittest.main('idlelib.idle_test.test_textview', verbosity=2, exit=False)
from idlelib.idle_test.htest import run
run(TextViewer)
|
