117 lines
4.1 KiB
Python
117 lines
4.1 KiB
Python
"""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)
|