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Edit File : textview.py \| Size : 5.98 KB
"""Simple text browser for IDLE """ from tkinter import Toplevel, Text, TclError,\ HORIZONTAL, VERTICAL, N, S, E, W from tkinter.ttk import Frame, Scrollbar, Button from tkinter.messagebox import showerror from idlelib.colorizer import color_config class AutoHiddenScrollbar(Scrollbar): """A scrollbar that is automatically hidden when not needed. Only the grid geometry manager is supported. """ def set(self, lo, hi): if float(lo) > 0.0 or float(hi) < 1.0: self.grid() else: self.grid_remove() super().set(lo, hi) def pack(self, kwargs): raise TclError(f'{self.__class__.__name__} does not support "pack"') def place(self, kwargs): raise TclError(f'{self.__class__.__name__} does not support "place"') class TextFrame(Frame): "Display text with scrollbar." def __init__(self, parent, rawtext, wrap='word'): """Create a frame for Textview. parent - parent widget for this frame rawtext - text to display """ super().__init__(parent) self['relief'] = 'sunken' self['height'] = 700 self.text = text = Text(self, wrap=wrap, highlightthickness=0) color_config(text) text.grid(row=0, column=0, sticky=N+S+E+W) self.grid_rowconfigure(0, weight=1) self.grid_columnconfigure(0, weight=1) text.insert(0.0, rawtext) text['state'] = 'disabled' text.focus_set() # vertical scrollbar self.yscroll = yscroll = AutoHiddenScrollbar(self, orient=VERTICAL, takefocus=False, command=text.yview) text['yscrollcommand'] = yscroll.set yscroll.grid(row=0, column=1, sticky=N+S) if wrap == 'none': # horizontal scrollbar self.xscroll = xscroll = AutoHiddenScrollbar(self, orient=HORIZONTAL, takefocus=False, command=text.xview) text['xscrollcommand'] = xscroll.set xscroll.grid(row=1, column=0, sticky=E+W) class ViewFrame(Frame): "Display TextFrame and Close button." def __init__(self, parent, text, wrap='word'): super().__init__(parent) self.parent = parent self.bind('<Return>', self.ok) self.bind('<Escape>', self.ok) self.textframe = TextFrame(self, text, wrap=wrap) self.button_ok = button_ok = Button( self, text='Close', command=self.ok, takefocus=False) self.textframe.pack(side='top', expand=True, fill='both') button_ok.pack(side='bottom') def ok(self, event=None): """Dismiss text viewer dialog.""" self.parent.destroy() class ViewWindow(Toplevel): "A simple text viewer dialog for IDLE." def __init__(self, parent, title, text, modal=True, wrap='word', *, _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 wrap - type of text wrapping to use ('word', 'char' or 'none') _htest - bool; change box location when running htest. _utest - bool; don't wait_window when running unittest. """ super().__init__(parent) self['borderwidth'] = 5 # Place dialog below parent if running htest. x = parent.winfo_rootx() + 10 y = parent.winfo_rooty() + (10 if not _htest else 100) self.geometry(f'=750x500+{x}+{y}') self.title(title) self.viewframe = ViewFrame(self, text, wrap=wrap) self.protocol("WM_DELETE_WINDOW", self.ok) self.button_ok = button_ok = Button(self, text='Close', command=self.ok, takefocus=False) self.viewframe.pack(side='top', expand=True, fill='both') self.is_modal = modal if self.is_modal: self.transient(parent) self.grab_set() if not _utest: self.wait_window() def ok(self, event=None): """Dismiss text viewer dialog.""" if self.is_modal: self.grab_release() self.destroy() def view_text(parent, title, text, modal=True, wrap='word', _utest=False): """Create text viewer for given text. parent - parent of this dialog title - string which is the title of popup dialog text - text to display in this dialog wrap - type of text wrapping to use ('word', 'char' or 'none') modal - controls if users can interact with other windows while this dialog is displayed _utest - bool; controls wait_window on unittest """ return ViewWindow(parent, title, text, modal, wrap=wrap, _utest=_utest) def view_file(parent, title, filename, encoding, modal=True, wrap='word', _utest=False): """Create text viewer 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=f'Unable to load file {filename!r} .', parent=parent) except UnicodeDecodeError as err: showerror(title='Unicode Decode Error', message=str(err), parent=parent) else: return view_text(parent, title, contents, modal, wrap=wrap, _utest=_utest) return None if __name__ == '__main__': from unittest import main main('idlelib.idle_test.test_textview', verbosity=2, exit=False) from idlelib.idle_test.htest import run run(ViewWindow) Back

Edit File : textview.py | Size : 5.98 KB

"""Simple text browser for IDLE

"""
from tkinter import Toplevel, Text, TclError,\
    HORIZONTAL, VERTICAL, N, S, E, W
from tkinter.ttk import Frame, Scrollbar, Button
from tkinter.messagebox import showerror

from idlelib.colorizer import color_config

class AutoHiddenScrollbar(Scrollbar):
    """A scrollbar that is automatically hidden when not needed.

Only the grid geometry manager is supported.
    """
    def set(self, lo, hi):
        if float(lo) > 0.0 or float(hi) < 1.0:
            self.grid()
        else:
            self.grid_remove()
        super().set(lo, hi)

def pack(self, **kwargs):
        raise TclError(f'{self.__class__.__name__} does not support "pack"')

def place(self, **kwargs):
        raise TclError(f'{self.__class__.__name__} does not support "place"')

class TextFrame(Frame):
    "Display text with scrollbar."

def __init__(self, parent, rawtext, wrap='word'):
        """Create a frame for Textview.

parent - parent widget for this frame
        rawtext - text to display
        """
        super().__init__(parent)
        self['relief'] = 'sunken'
        self['height'] = 700

self.text = text = Text(self, wrap=wrap, highlightthickness=0)
        color_config(text)
        text.grid(row=0, column=0, sticky=N+S+E+W)
        self.grid_rowconfigure(0, weight=1)
        self.grid_columnconfigure(0, weight=1)
        text.insert(0.0, rawtext)
        text['state'] = 'disabled'
        text.focus_set()

# vertical scrollbar
        self.yscroll = yscroll = AutoHiddenScrollbar(self, orient=VERTICAL,
                                                     takefocus=False,
                                                     command=text.yview)
        text['yscrollcommand'] = yscroll.set
        yscroll.grid(row=0, column=1, sticky=N+S)

if wrap == 'none':
            # horizontal scrollbar
            self.xscroll = xscroll = AutoHiddenScrollbar(self, orient=HORIZONTAL,
                                                         takefocus=False,
                                                         command=text.xview)
            text['xscrollcommand'] = xscroll.set
            xscroll.grid(row=1, column=0, sticky=E+W)

class ViewFrame(Frame):
    "Display TextFrame and Close button."
    def __init__(self, parent, text, wrap='word'):
        super().__init__(parent)
        self.parent = parent
        self.bind('<Return>', self.ok)
        self.bind('<Escape>', self.ok)
        self.textframe = TextFrame(self, text, wrap=wrap)
        self.button_ok = button_ok = Button(
                self, text='Close', command=self.ok, takefocus=False)
        self.textframe.pack(side='top', expand=True, fill='both')
        button_ok.pack(side='bottom')

def ok(self, event=None):
        """Dismiss text viewer dialog."""
        self.parent.destroy()

class ViewWindow(Toplevel):
    "A simple text viewer dialog for IDLE."

def __init__(self, parent, title, text, modal=True, wrap='word',
                 *, _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
        wrap - type of text wrapping to use ('word', 'char' or 'none')
        _htest - bool; change box location when running htest.
        _utest - bool; don't wait_window when running unittest.
        """
        super().__init__(parent)
        self['borderwidth'] = 5
        # Place dialog below parent if running htest.
        x = parent.winfo_rootx() + 10
        y = parent.winfo_rooty() + (10 if not _htest else 100)
        self.geometry(f'=750x500+{x}+{y}')

self.title(title)
        self.viewframe = ViewFrame(self, text, wrap=wrap)
        self.protocol("WM_DELETE_WINDOW", self.ok)
        self.button_ok = button_ok = Button(self, text='Close',
                                            command=self.ok, takefocus=False)
        self.viewframe.pack(side='top', expand=True, fill='both')

self.is_modal = modal
        if self.is_modal:
            self.transient(parent)
            self.grab_set()
            if not _utest:
                self.wait_window()

def ok(self, event=None):
        """Dismiss text viewer dialog."""
        if self.is_modal:
            self.grab_release()
        self.destroy()

def view_text(parent, title, text, modal=True, wrap='word', _utest=False):
    """Create text viewer for given text.

parent - parent of this dialog
    title - string which is the title of popup dialog
    text - text to display in this dialog
    wrap - type of text wrapping to use ('word', 'char' or 'none')
    modal - controls if users can interact with other windows while this
            dialog is displayed
    _utest - bool; controls wait_window on unittest
    """
    return ViewWindow(parent, title, text, modal, wrap=wrap, _utest=_utest)

def view_file(parent, title, filename, encoding, modal=True, wrap='word',
              _utest=False):
    """Create text viewer 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=f'Unable to load file {filename!r} .',
                  parent=parent)
    except UnicodeDecodeError as err:
        showerror(title='Unicode Decode Error',
                  message=str(err),
                  parent=parent)
    else:
        return view_text(parent, title, contents, modal, wrap=wrap,
                         _utest=_utest)
    return None

if __name__ == '__main__':
    from unittest import main
    main('idlelib.idle_test.test_textview', verbosity=2, exit=False)

from idlelib.idle_test.htest import run
    run(ViewWindow)

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