"""
A number of functions that enhance IDLE on macOS.
"""
from os.path import expanduser
import plistlib
from sys import platform # Used in _init_tk_type, changed by test.
import tkinter
## Define functions that query the Mac graphics type.
## _tk_type and its initializer are private to this section.
_tk_type = None
def _init_tk_type():
""" Initialize _tk_type for isXyzTk functions.
This function is only called once, when _tk_type is still None.
"""
global _tk_type
if platform == 'darwin':
# When running IDLE, GUI is present, test/* may not be.
# When running tests, test/* is present, GUI may not be.
# If not, guess most common. Does not matter for testing.
from idlelib.__init__ import testing
if testing:
from test.support import requires, ResourceDenied
try:
requires('gui')
except ResourceDenied:
_tk_type = "cocoa"
return
root = tkinter.Tk()
ws = root.tk.call('tk', 'windowingsystem')
if 'x11' in ws:
_tk_type = "xquartz"
elif 'aqua' not in ws:
_tk_type = "other"
elif 'AppKit' in root.tk.call('winfo', 'server', '.'):
_tk_type = "cocoa"
else:
_tk_type = "carbon"
root.destroy()
else:
_tk_type = "other"
return
def isAquaTk():
"""
Returns True if IDLE is using a native OS X Tk (Cocoa or Carbon).
"""
if not _tk_type:
_init_tk_type()
return _tk_type == "cocoa" or _tk_type == "carbon"
def isCarbonTk():
"""
Returns True if IDLE is using a Carbon Aqua Tk (instead of the
newer Cocoa Aqua Tk).
"""
if not _tk_type:
_init_tk_type()
return _tk_type == "carbon"
def isCocoaTk():
"""
Returns True if IDLE is using a Cocoa Aqua Tk.
"""
if not _tk_type:
_init_tk_type()
return _tk_type == "cocoa"
def isXQuartz():
"""
Returns True if IDLE is using an OS X X11 Tk.
"""
if not _tk_type:
_init_tk_type()
return _tk_type == "xquartz"
def readSystemPreferences():
"""
Fetch the macOS system preferences.
"""
if platform != 'darwin':
return None
plist_path = expanduser('~/Library/Preferences/.GlobalPreferences.plist')
try:
with open(plist_path, 'rb') as plist_file:
return plistlib.load(plist_file)
except OSError:
return None
def preferTabsPreferenceWarning():
"""
Warn if "Prefer tabs when opening documents" is set to "Always".
"""
if platform != 'darwin':
return None
prefs = readSystemPreferences()
if prefs and prefs.get('AppleWindowTabbingMode') == 'always':
return (
'WARNING: The system preference "Prefer tabs when opening'
' documents" is set to "Always". This will cause various problems'
' with IDLE. For the best experience, change this setting when'
' running IDLE (via System Preferences -> Dock).'
)
return None
## Fix the menu and related functions.
def addOpenEventSupport(root, flist):
"""
This ensures that the application will respond to open AppleEvents, which
makes is feasible to use IDLE as the default application for python files.
"""
def doOpenFile(*args):
for fn in args:
flist.open(fn)
# The command below is a hook in aquatk that is called whenever the app
# receives a file open event. The callback can have multiple arguments,
# one for every file that should be opened.
root.createcommand("::tk::mac::OpenDocument", doOpenFile)
def hideTkConsole(root):
try:
root.tk.call('console', 'hide')
except tkinter.TclError:
# Some versions of the Tk framework don't have a console object
pass
def overrideRootMenu(root, flist):
"""
Replace the Tk root menu by something that is more appropriate for
IDLE with an Aqua Tk.
"""
# The menu that is attached to the Tk root (".") is also used by AquaTk for
# all windows that don't specify a menu of their own. The default menubar
# contains a number of menus, none of which are appropriate for IDLE. The
# Most annoying of those is an 'About Tck/Tk...' menu in the application
# menu.
#
# This function replaces the default menubar by a mostly empty one, it
# should only contain the correct application menu and the window menu.
#
# Due to a (mis-)feature of TkAqua the user will also see an empty Help
# menu.
from tkinter import Menu
from idlelib import mainmenu
from idlelib import window
closeItem = mainmenu.menudefs[0][1][-2]
# Remove the last 3 items of the file menu: a separator, close window and
# quit. Close window will be reinserted just above the save item, where
# it should be according to the HIG. Quit is in the application menu.
del mainmenu.menudefs[0][1][-3:]
mainmenu.menudefs[0][1].insert(6, closeItem)
# Remove the 'About' entry from the help menu, it is in the application
# menu
del mainmenu.menudefs[-1][1][0:2]
# Remove the 'Configure Idle' entry from the options menu, it is in the
# application menu as 'Preferences'
del mainmenu.menudefs[-3][1][0:2]
menubar = Menu(root)
root.configure(menu=menubar)
menu = Menu(menubar, name='window', tearoff=0)
menubar.add_cascade(label='Window', menu=menu, underline=0)
def postwindowsmenu(menu=menu):
end = menu.index('end')
if end is None:
end = -1
if end > 0:
menu.delete(0, end)
window.add_windows_to_menu(menu)
window.register_callback(postwindowsmenu)
def about_dialog(event=None):
"Handle Help 'About IDLE' event."
# Synchronize with editor.EditorWindow.about_dialog.
from idlelib import help_about
help_about.AboutDialog(root)
def config_dialog(event=None):
"Handle Options 'Configure IDLE' event."
# Synchronize with editor.EditorWindow.config_dialog.
from idlelib import configdialog
# Ensure that the root object has an instance_dict attribute,
# mirrors code in EditorWindow (although that sets the attribute
# on an EditorWindow instance that is then passed as the first
# argument to ConfigDialog)
root.instance_dict = flist.inversedict
configdialog.ConfigDialog(root, 'Settings')
def help_dialog(event=None):
"Handle Help 'IDLE Help' event."
# Synchronize with editor.EditorWindow.help_dialog.
from idlelib import help
help.show_idlehelp(root)
root.bind('<<about-idle>>', about_dialog)
root.bind('<<open-config-dialog>>', config_dialog)
root.createcommand('::tk::mac::ShowPreferences', config_dialog)
if flist:
root.bind('<<close-all-windows>>', flist.close_all_callback)
# The binding above doesn't reliably work on all versions of Tk
# on macOS. Adding command definition below does seem to do the
# right thing for now.
root.createcommand('::tk::mac::Quit', flist.close_all_callback)
if isCarbonTk():
# for Carbon AquaTk, replace the default Tk apple menu
menu = Menu(menubar, name='apple', tearoff=0)
menubar.add_cascade(label='IDLE', menu=menu)
mainmenu.menudefs.insert(0,
('application', [
('About IDLE', '<<about-idle>>'),
None,
]))
if isCocoaTk():
# replace default About dialog with About IDLE one
root.createcommand('tkAboutDialog', about_dialog)
# replace default "Help" item in Help menu
root.createcommand('::tk::mac::ShowHelp', help_dialog)
# remove redundant "IDLE Help" from menu
del mainmenu.menudefs[-1][1][0]
def fixb2context(root):
'''Removed bad AquaTk Button-2 (right) and Paste bindings.
They prevent context menu access and seem to be gone in AquaTk8.6.
See issue #24801.
'''
root.unbind_class('Text', '<B2>')
root.unbind_class('Text', '<B2-Motion>')
root.unbind_class('Text', '<<PasteSelection>>')
def setupApp(root, flist):
"""
Perform initial OS X customizations if needed.
Called from pyshell.main() after initial calls to Tk()
There are currently three major versions of Tk in use on OS X:
1. Aqua Cocoa Tk (native default since OS X 10.6)
2. Aqua Carbon Tk (original native, 32-bit only, deprecated)
3. X11 (supported by some third-party distributors, deprecated)
There are various differences among the three that affect IDLE
behavior, primarily with menus, mouse key events, and accelerators.
Some one-time customizations are performed here.
Others are dynamically tested throughout idlelib by calls to the
isAquaTk(), isCarbonTk(), isCocoaTk(), isXQuartz() functions which
are initialized here as well.
"""
if isAquaTk():
hideTkConsole(root)
overrideRootMenu(root, flist)
addOpenEventSupport(root, flist)
fixb2context(root)
if __name__ == '__main__':
from unittest import main
main('idlelib.idle_test.test_macosx', verbosity=2)
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