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288 lines
9.4 KiB
288 lines
9.4 KiB
6 years ago
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"""
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A number of functions that enhance IDLE on macOS.
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"""
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from os.path import expanduser
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import plistlib
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from sys import platform # Used in _init_tk_type, changed by test.
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import tkinter
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## Define functions that query the Mac graphics type.
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## _tk_type and its initializer are private to this section.
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_tk_type = None
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def _init_tk_type():
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"""
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Initializes OS X Tk variant values for
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isAquaTk(), isCarbonTk(), isCocoaTk(), and isXQuartz().
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"""
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global _tk_type
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if platform == 'darwin':
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root = tkinter.Tk()
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ws = root.tk.call('tk', 'windowingsystem')
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if 'x11' in ws:
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_tk_type = "xquartz"
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elif 'aqua' not in ws:
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_tk_type = "other"
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elif 'AppKit' in root.tk.call('winfo', 'server', '.'):
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_tk_type = "cocoa"
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else:
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_tk_type = "carbon"
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root.destroy()
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else:
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_tk_type = "other"
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def isAquaTk():
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"""
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Returns True if IDLE is using a native OS X Tk (Cocoa or Carbon).
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"""
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if not _tk_type:
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_init_tk_type()
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return _tk_type == "cocoa" or _tk_type == "carbon"
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def isCarbonTk():
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"""
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Returns True if IDLE is using a Carbon Aqua Tk (instead of the
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newer Cocoa Aqua Tk).
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"""
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if not _tk_type:
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_init_tk_type()
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return _tk_type == "carbon"
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def isCocoaTk():
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"""
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Returns True if IDLE is using a Cocoa Aqua Tk.
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"""
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if not _tk_type:
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_init_tk_type()
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return _tk_type == "cocoa"
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def isXQuartz():
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"""
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Returns True if IDLE is using an OS X X11 Tk.
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"""
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if not _tk_type:
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_init_tk_type()
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return _tk_type == "xquartz"
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def tkVersionWarning(root):
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"""
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Returns a string warning message if the Tk version in use appears to
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be one known to cause problems with IDLE.
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1. Apple Cocoa-based Tk 8.5.7 shipped with Mac OS X 10.6 is unusable.
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2. Apple Cocoa-based Tk 8.5.9 in OS X 10.7 and 10.8 is better but
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can still crash unexpectedly.
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"""
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if isCocoaTk():
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patchlevel = root.tk.call('info', 'patchlevel')
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if patchlevel not in ('8.5.7', '8.5.9'):
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return False
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return ("WARNING: The version of Tcl/Tk ({0}) in use may"
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" be unstable.\n"
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"Visit http://www.python.org/download/mac/tcltk/"
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" for current information.".format(patchlevel))
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else:
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return False
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def readSystemPreferences():
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"""
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Fetch the macOS system preferences.
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"""
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if platform != 'darwin':
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return None
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plist_path = expanduser('~/Library/Preferences/.GlobalPreferences.plist')
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try:
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with open(plist_path, 'rb') as plist_file:
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return plistlib.load(plist_file)
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except OSError:
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return None
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def preferTabsPreferenceWarning():
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"""
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Warn if "Prefer tabs when opening documents" is set to "Always".
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"""
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if platform != 'darwin':
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return None
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prefs = readSystemPreferences()
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if prefs and prefs.get('AppleWindowTabbingMode') == 'always':
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return (
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'WARNING: The system preference "Prefer tabs when opening'
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' documents" is set to "Always". This will cause various problems'
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' with IDLE. For the best experience, change this setting when'
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' running IDLE (via System Preferences -> Dock).'
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)
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return None
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## Fix the menu and related functions.
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def addOpenEventSupport(root, flist):
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"""
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This ensures that the application will respond to open AppleEvents, which
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makes is feasible to use IDLE as the default application for python files.
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"""
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def doOpenFile(*args):
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for fn in args:
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flist.open(fn)
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# The command below is a hook in aquatk that is called whenever the app
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# receives a file open event. The callback can have multiple arguments,
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# one for every file that should be opened.
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root.createcommand("::tk::mac::OpenDocument", doOpenFile)
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def hideTkConsole(root):
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try:
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root.tk.call('console', 'hide')
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except tkinter.TclError:
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# Some versions of the Tk framework don't have a console object
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pass
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def overrideRootMenu(root, flist):
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"""
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Replace the Tk root menu by something that is more appropriate for
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IDLE with an Aqua Tk.
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"""
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# The menu that is attached to the Tk root (".") is also used by AquaTk for
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# all windows that don't specify a menu of their own. The default menubar
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# contains a number of menus, none of which are appropriate for IDLE. The
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# Most annoying of those is an 'About Tck/Tk...' menu in the application
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# menu.
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#
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# This function replaces the default menubar by a mostly empty one, it
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# should only contain the correct application menu and the window menu.
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#
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# Due to a (mis-)feature of TkAqua the user will also see an empty Help
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# menu.
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from tkinter import Menu
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from idlelib import mainmenu
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from idlelib import window
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closeItem = mainmenu.menudefs[0][1][-2]
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# Remove the last 3 items of the file menu: a separator, close window and
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# quit. Close window will be reinserted just above the save item, where
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# it should be according to the HIG. Quit is in the application menu.
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del mainmenu.menudefs[0][1][-3:]
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mainmenu.menudefs[0][1].insert(6, closeItem)
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# Remove the 'About' entry from the help menu, it is in the application
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# menu
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del mainmenu.menudefs[-1][1][0:2]
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# Remove the 'Configure Idle' entry from the options menu, it is in the
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# application menu as 'Preferences'
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del mainmenu.menudefs[-2][1][0]
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menubar = Menu(root)
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root.configure(menu=menubar)
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menudict = {}
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menudict['window'] = menu = Menu(menubar, name='window', tearoff=0)
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menubar.add_cascade(label='Window', menu=menu, underline=0)
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def postwindowsmenu(menu=menu):
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end = menu.index('end')
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if end is None:
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end = -1
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if end > 0:
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menu.delete(0, end)
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window.add_windows_to_menu(menu)
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window.register_callback(postwindowsmenu)
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def about_dialog(event=None):
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"Handle Help 'About IDLE' event."
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# Synchronize with editor.EditorWindow.about_dialog.
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from idlelib import help_about
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help_about.AboutDialog(root)
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def config_dialog(event=None):
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"Handle Options 'Configure IDLE' event."
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# Synchronize with editor.EditorWindow.config_dialog.
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from idlelib import configdialog
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# Ensure that the root object has an instance_dict attribute,
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# mirrors code in EditorWindow (although that sets the attribute
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# on an EditorWindow instance that is then passed as the first
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# argument to ConfigDialog)
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root.instance_dict = flist.inversedict
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configdialog.ConfigDialog(root, 'Settings')
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def help_dialog(event=None):
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"Handle Help 'IDLE Help' event."
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# Synchronize with editor.EditorWindow.help_dialog.
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from idlelib import help
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help.show_idlehelp(root)
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root.bind('<<about-idle>>', about_dialog)
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root.bind('<<open-config-dialog>>', config_dialog)
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root.createcommand('::tk::mac::ShowPreferences', config_dialog)
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if flist:
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root.bind('<<close-all-windows>>', flist.close_all_callback)
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# The binding above doesn't reliably work on all versions of Tk
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# on macOS. Adding command definition below does seem to do the
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# right thing for now.
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root.createcommand('exit', flist.close_all_callback)
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if isCarbonTk():
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# for Carbon AquaTk, replace the default Tk apple menu
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menudict['application'] = menu = Menu(menubar, name='apple',
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tearoff=0)
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menubar.add_cascade(label='IDLE', menu=menu)
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mainmenu.menudefs.insert(0,
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('application', [
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('About IDLE', '<<about-idle>>'),
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None,
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]))
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if isCocoaTk():
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# replace default About dialog with About IDLE one
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root.createcommand('tkAboutDialog', about_dialog)
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# replace default "Help" item in Help menu
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root.createcommand('::tk::mac::ShowHelp', help_dialog)
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# remove redundant "IDLE Help" from menu
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del mainmenu.menudefs[-1][1][0]
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def fixb2context(root):
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'''Removed bad AquaTk Button-2 (right) and Paste bindings.
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They prevent context menu access and seem to be gone in AquaTk8.6.
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See issue #24801.
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'''
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root.unbind_class('Text', '<B2>')
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root.unbind_class('Text', '<B2-Motion>')
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root.unbind_class('Text', '<<PasteSelection>>')
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def setupApp(root, flist):
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"""
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Perform initial OS X customizations if needed.
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Called from pyshell.main() after initial calls to Tk()
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There are currently three major versions of Tk in use on OS X:
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1. Aqua Cocoa Tk (native default since OS X 10.6)
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2. Aqua Carbon Tk (original native, 32-bit only, deprecated)
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3. X11 (supported by some third-party distributors, deprecated)
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There are various differences among the three that affect IDLE
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behavior, primarily with menus, mouse key events, and accelerators.
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Some one-time customizations are performed here.
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Others are dynamically tested throughout idlelib by calls to the
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isAquaTk(), isCarbonTk(), isCocoaTk(), isXQuartz() functions which
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are initialized here as well.
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"""
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if isAquaTk():
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hideTkConsole(root)
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overrideRootMenu(root, flist)
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addOpenEventSupport(root, flist)
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fixb2context(root)
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if __name__ == '__main__':
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from unittest import main
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main('idlelib.idle_test.test_macosx', verbosity=2)
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