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"""
A number of function that enhance IDLE on MacOSX when it used as a normal
GUI application (as opposed to an X11 application).
"""
import sys
import Tkinter

def runningAsOSXApp():
    """ Returns True iff running from the IDLE.app bundle on OSX """
    return (sys.platform == 'darwin' and 'IDLE.app' in sys.argv[0])

def addOpenEventSupport(root, flist):
    """
    This ensures that the application will respont to open AppleEvents, which
    makes is feaseable 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's more appropriate for
    IDLE.
    """
    # 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, Text, Text
    from EditorWindow import prepstr, get_accelerator
    import Bindings
    import WindowList
    from MultiCall import MultiCallCreator

    menubar = Menu(root)
    root.configure(menu=menubar)
    menudict = {}

    menudict['windows'] = menu = Menu(menubar, name='windows')
    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)
        WindowList.add_windows_to_menu(menu)
    WindowList.register_callback(postwindowsmenu)

    menudict['application'] = menu = Menu(menubar, name='apple')
    menubar.add_cascade(label='IDLE', menu=menu)

    def about_dialog(event=None):
        import aboutDialog
        aboutDialog.AboutDialog(root, 'About IDLE')

    def config_dialog(event=None):
        import configDialog
        configDialog.ConfigDialog(root, 'Settings')


    root.bind('<<about-idle>>', about_dialog)
    root.bind('<<open-config-dialog>>', config_dialog)
    if flist:
        root.bind('<<close-all-windows>>', flist.close_all_callback)


    ###check if Tk version >= 8.4.14; if so, use hard-coded showprefs binding
    tkversion = root.tk.eval('info patchlevel')
    if tkversion >= '8.4.14':
        Bindings.menudefs[0] =  ('application', [
                ('About IDLE', '<<about-idle>>'),
                None,
            ])
        root.createcommand('::tk::mac::ShowPreferences', config_dialog)
    else:
        for mname, entrylist in Bindings.menudefs:
            menu = menudict.get(mname)
            if not menu:
                continue
            else:
                for entry in entrylist:
                    if not entry:
                        menu.add_separator()
                    else:
                        label, eventname = entry
                        underline, label = prepstr(label)
                        accelerator = get_accelerator(Bindings.default_keydefs,
                        eventname)
                        def command(text=root, eventname=eventname):
                            text.event_generate(eventname)
                        menu.add_command(label=label, underline=underline,
                        command=command, accelerator=accelerator)

def setupApp(root, flist):
    """
    Perform setup for the OSX application bundle.
    """
    if not runningAsOSXApp(): return

    hideTkConsole(root)
    overrideRootMenu(root, flist)
    addOpenEventSupport(root, flist)
n>fgcolor, width=1, #don't request more than we get padx=padx, border=border, relief=SUNKEN) # Pack the label widget before and above the text_frame widget, # thus ensuring that it will appear directly above text_frame self.label.pack(side=TOP, fill=X, expand=False, before=self.editwin.text_frame) else: self.label.destroy() self.label = None idleConf.SetOption("extensions", "CodeContext", "visible", str(self.label is not None)) idleConf.SaveUserCfgFiles() def get_line_info(self, linenum): """Get the line indent value, text, and any block start keyword If the line does not start a block, the keyword value is False. The indentation of empty lines (or comment lines) is INFINITY. """ text = self.text.get("%d.0" % linenum, "%d.end" % linenum) spaces, firstword = getspacesfirstword(text) opener = firstword in BLOCKOPENERS and firstword if len(text) == len(spaces) or text[len(spaces)] == '#': indent = INFINITY else: indent = len(spaces) return indent, text, opener def get_context(self, new_topvisible, stopline=1, stopindent=0): """Get context lines, starting at new_topvisible and working backwards. Stop when stopline or stopindent is reached. Return a tuple of context data and the indent level at the top of the region inspected. """ assert stopline > 0 lines = [] # The indentation level we are currently in: lastindent = INFINITY # For a line to be interesting, it must begin with a block opening # keyword, and have less indentation than lastindent. for linenum in range(new_topvisible, stopline-1, -1): indent, text, opener = self.get_line_info(linenum) if indent < lastindent: lastindent = indent if opener in ("else", "elif"): # We also show the if statement lastindent += 1 if opener and linenum < new_topvisible and indent >= stopindent: lines.append((linenum, indent, text, opener)) if lastindent <= stopindent: break lines.reverse() return lines, lastindent def update_code_context(self): """Update context information and lines visible in the context pane. """ new_topvisible = int(self.text.index("@0,0").split('.')[0]) if self.topvisible == new_topvisible: # haven't scrolled return if self.topvisible < new_topvisible: # scroll down lines, lastindent = self.get_context(new_topvisible, self.topvisible) # retain only context info applicable to the region # between topvisible and new_topvisible: while self.info[-1][1] >= lastindent: del self.info[-1] elif self.topvisible > new_topvisible: # scroll up stopindent = self.info[-1][1] + 1 # retain only context info associated # with lines above new_topvisible: while self.info[-1][0] >= new_topvisible: stopindent = self.info[-1][1] del self.info[-1] lines, lastindent = self.get_context(new_topvisible, self.info[-1][0]+1, stopindent) self.info.extend(lines) self.topvisible = new_topvisible # empty lines in context pane: context_strings = [""] * max(0, self.context_depth - len(self.info)) # followed by the context hint lines: context_strings += [x[2] for x in self.info[-self.context_depth:]] self.label["text"] = '\n'.join(context_strings) def timer_event(self): if self.label: self.update_code_context() self.text.after(UPDATEINTERVAL, self.timer_event) def font_timer_event(self): newtextfont = self.text["font"] if self.label and newtextfont != self.textfont: self.textfont = newtextfont self.label["font"] = self.textfont self.text.after(FONTUPDATEINTERVAL, self.font_timer_event)