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# (C) Copyright 2005-2023 Enthought, Inc., Austin, TX
# All rights reserved.
#
# This software is provided without warranty under the terms of the BSD
# license included in LICENSE.txt and may be redistributed only under
# the conditions described in the aforementioned license. The license
# is also available online at http://www.enthought.com/licenses/BSD.txt
#
# Thanks for using Enthought open source!
""" A widget for editing Python code. """
from traits.api import Bool, Event, HasTraits, Str
from pyface.i_layout_widget import ILayoutWidget
from pyface.key_pressed_event import KeyPressedEvent
class IPythonEditor(ILayoutWidget):
""" A widget for editing Python code. """
# 'IPythonEditor' interface --------------------------------------------
#: Has the file in the editor been modified?
dirty = Bool(False)
#: The pathname of the file being edited.
path = Str()
#: Should line numbers be shown in the margin?
show_line_numbers = Bool(True)
# Events ----
#: The contents of the editor has changed.
changed = Event()
#: A key has been pressed.
key_pressed = Event(KeyPressedEvent)
# ------------------------------------------------------------------------
# 'IPythonEditor' interface.
# ------------------------------------------------------------------------
def load(self, path=None):
""" Loads the contents of the editor.
Parameters
----------
path : str or None
The path to the file to load.
"""
def save(self, path=None):
""" Saves the contents of the editor.
Parameters
----------
path : str or None
The path to the file to save.
"""
# FIXME v3: This is very dependent on the underlying implementation.
def set_style(self, n, fore, back):
""" Set the foreground and background colors for a particular style and
set the font and size to default values.
"""
def select_line(self, lineno):
""" Selects the specified line.
Parameters
----------
lineno : int
The line number to select.
"""
class MPythonEditor(HasTraits):
""" The mixin class that contains common code for toolkit specific
implementations of the IPythonEditor interface.
Implements: _changed_path()
"""
def _changed_path(self):
""" Called when the path to the file is changed. """
if self.control is not None:
self.load()
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