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4d92158f4c
Part 3 of 3, continuing PR #7689. This covers 14 idlelib modules and their tests, rpc to zoomheight except for run (already done) and tooltip (being done separately).
137 lines
4.5 KiB
Python
137 lines
4.5 KiB
Python
"""Simple text browser for IDLE
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"""
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from tkinter import Toplevel, Text
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from tkinter.ttk import Frame, Scrollbar, Button
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from tkinter.messagebox import showerror
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class TextFrame(Frame):
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"Display text with scrollbar."
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def __init__(self, parent, rawtext):
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"""Create a frame for Textview.
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parent - parent widget for this frame
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rawtext - text to display
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"""
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super().__init__(parent)
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self['relief'] = 'sunken'
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self['height'] = 700
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# TODO: get fg/bg from theme.
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self.bg = '#ffffff'
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self.fg = '#000000'
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self.text = text = Text(self, wrap='word', highlightthickness=0,
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fg=self.fg, bg=self.bg)
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self.scroll = scroll = Scrollbar(self, orient='vertical',
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takefocus=False, command=text.yview)
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text['yscrollcommand'] = scroll.set
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text.insert(0.0, rawtext)
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text['state'] = 'disabled'
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text.focus_set()
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scroll.pack(side='right', fill='y')
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text.pack(side='left', expand=True, fill='both')
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class ViewFrame(Frame):
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"Display TextFrame and Close button."
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def __init__(self, parent, text):
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super().__init__(parent)
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self.parent = parent
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self.bind('<Return>', self.ok)
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self.bind('<Escape>', self.ok)
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self.textframe = TextFrame(self, text)
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self.button_ok = button_ok = Button(
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self, text='Close', command=self.ok, takefocus=False)
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self.textframe.pack(side='top', expand=True, fill='both')
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button_ok.pack(side='bottom')
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def ok(self, event=None):
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"""Dismiss text viewer dialog."""
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self.parent.destroy()
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class ViewWindow(Toplevel):
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"A simple text viewer dialog for IDLE."
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def __init__(self, parent, title, text, modal=True,
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*, _htest=False, _utest=False):
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"""Show the given text in a scrollable window with a 'close' button.
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If modal is left True, users cannot interact with other windows
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until the textview window is closed.
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parent - parent of this dialog
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title - string which is title of popup dialog
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text - text to display in dialog
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_htest - bool; change box location when running htest.
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_utest - bool; don't wait_window when running unittest.
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"""
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super().__init__(parent)
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self['borderwidth'] = 5
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# Place dialog below parent if running htest.
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x = parent.winfo_rootx() + 10
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y = parent.winfo_rooty() + (10 if not _htest else 100)
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self.geometry(f'=750x500+{x}+{y}')
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self.title(title)
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self.viewframe = ViewFrame(self, text)
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self.protocol("WM_DELETE_WINDOW", self.ok)
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self.button_ok = button_ok = Button(self, text='Close',
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command=self.ok, takefocus=False)
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self.viewframe.pack(side='top', expand=True, fill='both')
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if modal:
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self.transient(parent)
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self.grab_set()
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if not _utest:
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self.wait_window()
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def ok(self, event=None):
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"""Dismiss text viewer dialog."""
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self.destroy()
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def view_text(parent, title, text, modal=True, _utest=False):
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"""Create text viewer for given text.
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parent - parent of this dialog
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title - string which is the title of popup dialog
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text - text to display in this dialog
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modal - controls if users can interact with other windows while this
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dialog is displayed
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_utest - bool; controls wait_window on unittest
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"""
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return ViewWindow(parent, title, text, modal, _utest=_utest)
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def view_file(parent, title, filename, encoding, modal=True, _utest=False):
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"""Create text viewer for text in filename.
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Return error message if file cannot be read. Otherwise calls view_text
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with contents of the file.
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"""
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try:
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with open(filename, 'r', encoding=encoding) as file:
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contents = file.read()
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except OSError:
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showerror(title='File Load Error',
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message=f'Unable to load file {filename!r} .',
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parent=parent)
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except UnicodeDecodeError as err:
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showerror(title='Unicode Decode Error',
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message=str(err),
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parent=parent)
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else:
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return view_text(parent, title, contents, modal, _utest=_utest)
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return None
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if __name__ == '__main__':
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from unittest import main
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main('idlelib.idle_test.test_textview', verbosity=2, exit=False)
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from idlelib.idle_test.htest import run
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run(ViewWindow)
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