Removed the Requirement to Install Python and NodeJS (Now Bundled with Borealis)

Dependencies/Python/Lib/tkinter/__main__.py

@@ -0,0 +1,7 @@
+"""Main entry point"""
+
+import sys
+if sys.argv[0].endswith("__main__.py"):
+    sys.argv[0] = "python -m tkinter"
+from . import _test as main
+main()

Dependencies/Python/Lib/tkinter/colorchooser.py

@@ -0,0 +1,86 @@
+# tk common color chooser dialogue
+#
+# this module provides an interface to the native color dialogue
+# available in Tk 4.2 and newer.
+#
+# written by Fredrik Lundh, May 1997
+#
+# fixed initialcolor handling in August 1998
+#
+
+
+from tkinter.commondialog import Dialog
+
+__all__ = ["Chooser", "askcolor"]
+
+
+class Chooser(Dialog):
+    """Create a dialog for the tk_chooseColor command.
+
+    Args:
+        master: The master widget for this dialog.  If not provided,
+            defaults to options['parent'] (if defined).
+        options: Dictionary of options for the tk_chooseColor call.
+            initialcolor: Specifies the selected color when the
+                dialog is first displayed.  This can be a tk color
+                string or a 3-tuple of ints in the range (0, 255)
+                for an RGB triplet.
+            parent: The parent window of the color dialog.  The
+                color dialog is displayed on top of this.
+            title: A string for the title of the dialog box.
+    """
+
+    command = "tk_chooseColor"
+
+    def _fixoptions(self):
+        """Ensure initialcolor is a tk color string.
+
+        Convert initialcolor from a RGB triplet to a color string.
+        """
+        try:
+            color = self.options["initialcolor"]
+            if isinstance(color, tuple):
+                # Assume an RGB triplet.
+                self.options["initialcolor"] = "#%02x%02x%02x" % color
+        except KeyError:
+            pass
+
+    def _fixresult(self, widget, result):
+        """Adjust result returned from call to tk_chooseColor.
+
+        Return both an RGB tuple of ints in the range (0, 255) and the
+        tk color string in the form #rrggbb.
+        """
+        # Result can be many things: an empty tuple, an empty string, or
+        # a _tkinter.Tcl_Obj, so this somewhat weird check handles that.
+        if not result or not str(result):
+            return None, None  # canceled
+
+        # To simplify application code, the color chooser returns
+        # an RGB tuple together with the Tk color string.
+        r, g, b = widget.winfo_rgb(result)
+        return (r//256, g//256, b//256), str(result)
+
+
+#
+# convenience stuff
+
+def askcolor(color=None, **options):
+    """Display dialog window for selection of a color.
+
+    Convenience wrapper for the Chooser class.  Displays the color
+    chooser dialog with color as the initial value.
+    """
+
+    if color:
+        options = options.copy()
+        options["initialcolor"] = color
+
+    return Chooser(**options).show()
+
+
+# --------------------------------------------------------------------
+# test stuff
+
+if __name__ == "__main__":
+    print("color", askcolor())

Dependencies/Python/Lib/tkinter/commondialog.py

@@ -0,0 +1,53 @@
+# base class for tk common dialogues
+#
+# this module provides a base class for accessing the common
+# dialogues available in Tk 4.2 and newer.  use filedialog,
+# colorchooser, and messagebox to access the individual
+# dialogs.
+#
+# written by Fredrik Lundh, May 1997
+#
+
+__all__ = ["Dialog"]
+
+from tkinter import _get_temp_root, _destroy_temp_root
+
+
+class Dialog:
+
+    command = None
+
+    def __init__(self, master=None, **options):
+        if master is None:
+            master = options.get('parent')
+        self.master = master
+        self.options = options
+
+    def _fixoptions(self):
+        pass # hook
+
+    def _fixresult(self, widget, result):
+        return result # hook
+
+    def show(self, **options):
+
+        # update instance options
+        for k, v in options.items():
+            self.options[k] = v
+
+        self._fixoptions()
+
+        master = self.master
+        if master is None:
+            master = _get_temp_root()
+        try:
+            self._test_callback(master)  # The function below is replaced for some tests.
+            s = master.tk.call(self.command, *master._options(self.options))
+            s = self._fixresult(master, s)
+        finally:
+            _destroy_temp_root(master)
+
+        return s
+
+    def _test_callback(self, master):
+        pass

Dependencies/Python/Lib/tkinter/constants.py

@@ -0,0 +1,110 @@
+# Symbolic constants for Tk
+
+# Booleans
+NO=FALSE=OFF=0
+YES=TRUE=ON=1
+
+# -anchor and -sticky
+N='n'
+S='s'
+W='w'
+E='e'
+NW='nw'
+SW='sw'
+NE='ne'
+SE='se'
+NS='ns'
+EW='ew'
+NSEW='nsew'
+CENTER='center'
+
+# -fill
+NONE='none'
+X='x'
+Y='y'
+BOTH='both'
+
+# -side
+LEFT='left'
+TOP='top'
+RIGHT='right'
+BOTTOM='bottom'
+
+# -relief
+RAISED='raised'
+SUNKEN='sunken'
+FLAT='flat'
+RIDGE='ridge'
+GROOVE='groove'
+SOLID = 'solid'
+
+# -orient
+HORIZONTAL='horizontal'
+VERTICAL='vertical'
+
+# -tabs
+NUMERIC='numeric'
+
+# -wrap
+CHAR='char'
+WORD='word'
+
+# -align
+BASELINE='baseline'
+
+# -bordermode
+INSIDE='inside'
+OUTSIDE='outside'
+
+# Special tags, marks and insert positions
+SEL='sel'
+SEL_FIRST='sel.first'
+SEL_LAST='sel.last'
+END='end'
+INSERT='insert'
+CURRENT='current'
+ANCHOR='anchor'
+ALL='all' # e.g. Canvas.delete(ALL)
+
+# Text widget and button states
+NORMAL='normal'
+DISABLED='disabled'
+ACTIVE='active'
+# Canvas state
+HIDDEN='hidden'
+
+# Menu item types
+CASCADE='cascade'
+CHECKBUTTON='checkbutton'
+COMMAND='command'
+RADIOBUTTON='radiobutton'
+SEPARATOR='separator'
+
+# Selection modes for list boxes
+SINGLE='single'
+BROWSE='browse'
+MULTIPLE='multiple'
+EXTENDED='extended'
+
+# Activestyle for list boxes
+# NONE='none' is also valid
+DOTBOX='dotbox'
+UNDERLINE='underline'
+
+# Various canvas styles
+PIESLICE='pieslice'
+CHORD='chord'
+ARC='arc'
+FIRST='first'
+LAST='last'
+BUTT='butt'
+PROJECTING='projecting'
+ROUND='round'
+BEVEL='bevel'
+MITER='miter'
+
+# Arguments to xview/yview
+MOVETO='moveto'
+SCROLL='scroll'
+UNITS='units'
+PAGES='pages'

Dependencies/Python/Lib/tkinter/dialog.py

@@ -0,0 +1,49 @@
+# dialog.py -- Tkinter interface to the tk_dialog script.
+
+from tkinter import _cnfmerge, Widget, TclError, Button, Pack
+
+__all__ = ["Dialog"]
+
+DIALOG_ICON = 'questhead'
+
+
+class Dialog(Widget):
+    def __init__(self, master=None, cnf={}, **kw):
+        cnf = _cnfmerge((cnf, kw))
+        self.widgetName = '__dialog__'
+        self._setup(master, cnf)
+        self.num = self.tk.getint(
+                self.tk.call(
+                      'tk_dialog', self._w,
+                      cnf['title'], cnf['text'],
+                      cnf['bitmap'], cnf['default'],
+                      *cnf['strings']))
+        try: Widget.destroy(self)
+        except TclError: pass
+
+    def destroy(self): pass
+
+
+def _test():
+    d = Dialog(None, {'title': 'File Modified',
+                      'text':
+                      'File "Python.h" has been modified'
+                      ' since the last time it was saved.'
+                      ' Do you want to save it before'
+                      ' exiting the application.',
+                      'bitmap': DIALOG_ICON,
+                      'default': 0,
+                      'strings': ('Save File',
+                                  'Discard Changes',
+                                  'Return to Editor')})
+    print(d.num)
+
+
+if __name__ == '__main__':
+    t = Button(None, {'text': 'Test',
+                      'command': _test,
+                      Pack: {}})
+    q = Button(None, {'text': 'Quit',
+                      'command': t.quit,
+                      Pack: {}})
+    t.mainloop()

Dependencies/Python/Lib/tkinter/dnd.py

@@ -0,0 +1,324 @@
+"""Drag-and-drop support for Tkinter.
+
+This is very preliminary.  I currently only support dnd *within* one
+application, between different windows (or within the same window).
+
+I am trying to make this as generic as possible -- not dependent on
+the use of a particular widget or icon type, etc.  I also hope that
+this will work with Pmw.
+
+To enable an object to be dragged, you must create an event binding
+for it that starts the drag-and-drop process. Typically, you should
+bind <ButtonPress> to a callback function that you write. The function
+should call Tkdnd.dnd_start(source, event), where 'source' is the
+object to be dragged, and 'event' is the event that invoked the call
+(the argument to your callback function).  Even though this is a class
+instantiation, the returned instance should not be stored -- it will
+be kept alive automatically for the duration of the drag-and-drop.
+
+When a drag-and-drop is already in process for the Tk interpreter, the
+call is *ignored*; this normally averts starting multiple simultaneous
+dnd processes, e.g. because different button callbacks all
+dnd_start().
+
+The object is *not* necessarily a widget -- it can be any
+application-specific object that is meaningful to potential
+drag-and-drop targets.
+
+Potential drag-and-drop targets are discovered as follows.  Whenever
+the mouse moves, and at the start and end of a drag-and-drop move, the
+Tk widget directly under the mouse is inspected.  This is the target
+widget (not to be confused with the target object, yet to be
+determined).  If there is no target widget, there is no dnd target
+object.  If there is a target widget, and it has an attribute
+dnd_accept, this should be a function (or any callable object).  The
+function is called as dnd_accept(source, event), where 'source' is the
+object being dragged (the object passed to dnd_start() above), and
+'event' is the most recent event object (generally a <Motion> event;
+it can also be <ButtonPress> or <ButtonRelease>).  If the dnd_accept()
+function returns something other than None, this is the new dnd target
+object.  If dnd_accept() returns None, or if the target widget has no
+dnd_accept attribute, the target widget's parent is considered as the
+target widget, and the search for a target object is repeated from
+there.  If necessary, the search is repeated all the way up to the
+root widget.  If none of the target widgets can produce a target
+object, there is no target object (the target object is None).
+
+The target object thus produced, if any, is called the new target
+object.  It is compared with the old target object (or None, if there
+was no old target widget).  There are several cases ('source' is the
+source object, and 'event' is the most recent event object):
+
+- Both the old and new target objects are None.  Nothing happens.
+
+- The old and new target objects are the same object.  Its method
+dnd_motion(source, event) is called.
+
+- The old target object was None, and the new target object is not
+None.  The new target object's method dnd_enter(source, event) is
+called.
+
+- The new target object is None, and the old target object is not
+None.  The old target object's method dnd_leave(source, event) is
+called.
+
+- The old and new target objects differ and neither is None.  The old
+target object's method dnd_leave(source, event), and then the new
+target object's method dnd_enter(source, event) is called.
+
+Once this is done, the new target object replaces the old one, and the
+Tk mainloop proceeds.  The return value of the methods mentioned above
+is ignored; if they raise an exception, the normal exception handling
+mechanisms take over.
+
+The drag-and-drop processes can end in two ways: a final target object
+is selected, or no final target object is selected.  When a final
+target object is selected, it will always have been notified of the
+potential drop by a call to its dnd_enter() method, as described
+above, and possibly one or more calls to its dnd_motion() method; its
+dnd_leave() method has not been called since the last call to
+dnd_enter().  The target is notified of the drop by a call to its
+method dnd_commit(source, event).
+
+If no final target object is selected, and there was an old target
+object, its dnd_leave(source, event) method is called to complete the
+dnd sequence.
+
+Finally, the source object is notified that the drag-and-drop process
+is over, by a call to source.dnd_end(target, event), specifying either
+the selected target object, or None if no target object was selected.
+The source object can use this to implement the commit action; this is
+sometimes simpler than to do it in the target's dnd_commit().  The
+target's dnd_commit() method could then simply be aliased to
+dnd_leave().
+
+At any time during a dnd sequence, the application can cancel the
+sequence by calling the cancel() method on the object returned by
+dnd_start().  This will call dnd_leave() if a target is currently
+active; it will never call dnd_commit().
+
+"""
+
+import tkinter
+
+__all__ = ["dnd_start", "DndHandler"]
+
+
+# The factory function
+
+def dnd_start(source, event):
+    h = DndHandler(source, event)
+    if h.root is not None:
+        return h
+    else:
+        return None
+
+
+# The class that does the work
+
+class DndHandler:
+
+    root = None
+
+    def __init__(self, source, event):
+        if event.num > 5:
+            return
+        root = event.widget._root()
+        try:
+            root.__dnd
+            return # Don't start recursive dnd
+        except AttributeError:
+            root.__dnd = self
+            self.root = root
+        self.source = source
+        self.target = None
+        self.initial_button = button = event.num
+        self.initial_widget = widget = event.widget
+        self.release_pattern = "<B%d-ButtonRelease-%d>" % (button, button)
+        self.save_cursor = widget['cursor'] or ""
+        widget.bind(self.release_pattern, self.on_release)
+        widget.bind("<Motion>", self.on_motion)
+        widget['cursor'] = "hand2"
+
+    def __del__(self):
+        root = self.root
+        self.root = None
+        if root is not None:
+            try:
+                del root.__dnd
+            except AttributeError:
+                pass
+
+    def on_motion(self, event):
+        x, y = event.x_root, event.y_root
+        target_widget = self.initial_widget.winfo_containing(x, y)
+        source = self.source
+        new_target = None
+        while target_widget is not None:
+            try:
+                attr = target_widget.dnd_accept
+            except AttributeError:
+                pass
+            else:
+                new_target = attr(source, event)
+                if new_target is not None:
+                    break
+            target_widget = target_widget.master
+        old_target = self.target
+        if old_target is new_target:
+            if old_target is not None:
+                old_target.dnd_motion(source, event)
+        else:
+            if old_target is not None:
+                self.target = None
+                old_target.dnd_leave(source, event)
+            if new_target is not None:
+                new_target.dnd_enter(source, event)
+                self.target = new_target
+
+    def on_release(self, event):
+        self.finish(event, 1)
+
+    def cancel(self, event=None):
+        self.finish(event, 0)
+
+    def finish(self, event, commit=0):
+        target = self.target
+        source = self.source
+        widget = self.initial_widget
+        root = self.root
+        try:
+            del root.__dnd
+            self.initial_widget.unbind(self.release_pattern)
+            self.initial_widget.unbind("<Motion>")
+            widget['cursor'] = self.save_cursor
+            self.target = self.source = self.initial_widget = self.root = None
+            if target is not None:
+                if commit:
+                    target.dnd_commit(source, event)
+                else:
+                    target.dnd_leave(source, event)
+        finally:
+            source.dnd_end(target, event)
+
+
+# ----------------------------------------------------------------------
+# The rest is here for testing and demonstration purposes only!
+
+class Icon:
+
+    def __init__(self, name):
+        self.name = name
+        self.canvas = self.label = self.id = None
+
+    def attach(self, canvas, x=10, y=10):
+        if canvas is self.canvas:
+            self.canvas.coords(self.id, x, y)
+            return
+        if self.canvas is not None:
+            self.detach()
+        if canvas is None:
+            return
+        label = tkinter.Label(canvas, text=self.name,
+                              borderwidth=2, relief="raised")
+        id = canvas.create_window(x, y, window=label, anchor="nw")
+        self.canvas = canvas
+        self.label = label
+        self.id = id
+        label.bind("<ButtonPress>", self.press)
+
+    def detach(self):
+        canvas = self.canvas
+        if canvas is None:
+            return
+        id = self.id
+        label = self.label
+        self.canvas = self.label = self.id = None
+        canvas.delete(id)
+        label.destroy()
+
+    def press(self, event):
+        if dnd_start(self, event):
+            # where the pointer is relative to the label widget:
+            self.x_off = event.x
+            self.y_off = event.y
+            # where the widget is relative to the canvas:
+            self.x_orig, self.y_orig = self.canvas.coords(self.id)
+
+    def move(self, event):
+        x, y = self.where(self.canvas, event)
+        self.canvas.coords(self.id, x, y)
+
+    def putback(self):
+        self.canvas.coords(self.id, self.x_orig, self.y_orig)
+
+    def where(self, canvas, event):
+        # where the corner of the canvas is relative to the screen:
+        x_org = canvas.winfo_rootx()
+        y_org = canvas.winfo_rooty()
+        # where the pointer is relative to the canvas widget:
+        x = event.x_root - x_org
+        y = event.y_root - y_org
+        # compensate for initial pointer offset
+        return x - self.x_off, y - self.y_off
+
+    def dnd_end(self, target, event):
+        pass
+
+
+class Tester:
+
+    def __init__(self, root):
+        self.top = tkinter.Toplevel(root)
+        self.canvas = tkinter.Canvas(self.top, width=100, height=100)
+        self.canvas.pack(fill="both", expand=1)
+        self.canvas.dnd_accept = self.dnd_accept
+
+    def dnd_accept(self, source, event):
+        return self
+
+    def dnd_enter(self, source, event):
+        self.canvas.focus_set() # Show highlight border
+        x, y = source.where(self.canvas, event)
+        x1, y1, x2, y2 = source.canvas.bbox(source.id)
+        dx, dy = x2-x1, y2-y1
+        self.dndid = self.canvas.create_rectangle(x, y, x+dx, y+dy)
+        self.dnd_motion(source, event)
+
+    def dnd_motion(self, source, event):
+        x, y = source.where(self.canvas, event)
+        x1, y1, x2, y2 = self.canvas.bbox(self.dndid)
+        self.canvas.move(self.dndid, x-x1, y-y1)
+
+    def dnd_leave(self, source, event):
+        self.top.focus_set() # Hide highlight border
+        self.canvas.delete(self.dndid)
+        self.dndid = None
+
+    def dnd_commit(self, source, event):
+        self.dnd_leave(source, event)
+        x, y = source.where(self.canvas, event)
+        source.attach(self.canvas, x, y)
+
+
+def test():
+    root = tkinter.Tk()
+    root.geometry("+1+1")
+    tkinter.Button(command=root.quit, text="Quit").pack()
+    t1 = Tester(root)
+    t1.top.geometry("+1+60")
+    t2 = Tester(root)
+    t2.top.geometry("+120+60")
+    t3 = Tester(root)
+    t3.top.geometry("+240+60")
+    i1 = Icon("ICON1")
+    i2 = Icon("ICON2")
+    i3 = Icon("ICON3")
+    i1.attach(t1.canvas)
+    i2.attach(t2.canvas)
+    i3.attach(t3.canvas)
+    root.mainloop()
+
+
+if __name__ == '__main__':
+    test()

Dependencies/Python/Lib/tkinter/filedialog.py

@@ -0,0 +1,492 @@
+"""File selection dialog classes.
+
+Classes:
+
+- FileDialog
+- LoadFileDialog
+- SaveFileDialog
+
+This module also presents tk common file dialogues, it provides interfaces
+to the native file dialogues available in Tk 4.2 and newer, and the
+directory dialogue available in Tk 8.3 and newer.
+These interfaces were written by Fredrik Lundh, May 1997.
+"""
+__all__ = ["FileDialog", "LoadFileDialog", "SaveFileDialog",
+           "Open", "SaveAs", "Directory",
+           "askopenfilename", "asksaveasfilename", "askopenfilenames",
+           "askopenfile", "askopenfiles", "asksaveasfile", "askdirectory"]
+
+import fnmatch
+import os
+from tkinter import (
+    Frame, LEFT, YES, BOTTOM, Entry, TOP, Button, Tk, X,
+    Toplevel, RIGHT, Y, END, Listbox, BOTH, Scrollbar,
+)
+from tkinter.dialog import Dialog
+from tkinter import commondialog
+from tkinter.simpledialog import _setup_dialog
+
+
+dialogstates = {}
+
+
+class FileDialog:
+
+    """Standard file selection dialog -- no checks on selected file.
+
+    Usage:
+
+        d = FileDialog(master)
+        fname = d.go(dir_or_file, pattern, default, key)
+        if fname is None: ...canceled...
+        else: ...open file...
+
+    All arguments to go() are optional.
+
+    The 'key' argument specifies a key in the global dictionary
+    'dialogstates', which keeps track of the values for the directory
+    and pattern arguments, overriding the values passed in (it does
+    not keep track of the default argument!).  If no key is specified,
+    the dialog keeps no memory of previous state.  Note that memory is
+    kept even when the dialog is canceled.  (All this emulates the
+    behavior of the Macintosh file selection dialogs.)
+
+    """
+
+    title = "File Selection Dialog"
+
+    def __init__(self, master, title=None):
+        if title is None: title = self.title
+        self.master = master
+        self.directory = None
+
+        self.top = Toplevel(master)
+        self.top.title(title)
+        self.top.iconname(title)
+        _setup_dialog(self.top)
+
+        self.botframe = Frame(self.top)
+        self.botframe.pack(side=BOTTOM, fill=X)
+
+        self.selection = Entry(self.top)
+        self.selection.pack(side=BOTTOM, fill=X)
+        self.selection.bind('<Return>', self.ok_event)
+
+        self.filter = Entry(self.top)
+        self.filter.pack(side=TOP, fill=X)
+        self.filter.bind('<Return>', self.filter_command)
+
+        self.midframe = Frame(self.top)
+        self.midframe.pack(expand=YES, fill=BOTH)
+
+        self.filesbar = Scrollbar(self.midframe)
+        self.filesbar.pack(side=RIGHT, fill=Y)
+        self.files = Listbox(self.midframe, exportselection=0,
+                             yscrollcommand=(self.filesbar, 'set'))
+        self.files.pack(side=RIGHT, expand=YES, fill=BOTH)
+        btags = self.files.bindtags()
+        self.files.bindtags(btags[1:] + btags[:1])
+        self.files.bind('<ButtonRelease-1>', self.files_select_event)
+        self.files.bind('<Double-ButtonRelease-1>', self.files_double_event)
+        self.filesbar.config(command=(self.files, 'yview'))
+
+        self.dirsbar = Scrollbar(self.midframe)
+        self.dirsbar.pack(side=LEFT, fill=Y)
+        self.dirs = Listbox(self.midframe, exportselection=0,
+                            yscrollcommand=(self.dirsbar, 'set'))
+        self.dirs.pack(side=LEFT, expand=YES, fill=BOTH)
+        self.dirsbar.config(command=(self.dirs, 'yview'))
+        btags = self.dirs.bindtags()
+        self.dirs.bindtags(btags[1:] + btags[:1])
+        self.dirs.bind('<ButtonRelease-1>', self.dirs_select_event)
+        self.dirs.bind('<Double-ButtonRelease-1>', self.dirs_double_event)
+
+        self.ok_button = Button(self.botframe,
+                                 text="OK",
+                                 command=self.ok_command)
+        self.ok_button.pack(side=LEFT)
+        self.filter_button = Button(self.botframe,
+                                    text="Filter",
+                                    command=self.filter_command)
+        self.filter_button.pack(side=LEFT, expand=YES)
+        self.cancel_button = Button(self.botframe,
+                                    text="Cancel",
+                                    command=self.cancel_command)
+        self.cancel_button.pack(side=RIGHT)
+
+        self.top.protocol('WM_DELETE_WINDOW', self.cancel_command)
+        # XXX Are the following okay for a general audience?
+        self.top.bind('<Alt-w>', self.cancel_command)
+        self.top.bind('<Alt-W>', self.cancel_command)
+
+    def go(self, dir_or_file=os.curdir, pattern="*", default="", key=None):
+        if key and key in dialogstates:
+            self.directory, pattern = dialogstates[key]
+        else:
+            dir_or_file = os.path.expanduser(dir_or_file)
+            if os.path.isdir(dir_or_file):
+                self.directory = dir_or_file
+            else:
+                self.directory, default = os.path.split(dir_or_file)
+        self.set_filter(self.directory, pattern)
+        self.set_selection(default)
+        self.filter_command()
+        self.selection.focus_set()
+        self.top.wait_visibility() # window needs to be visible for the grab
+        self.top.grab_set()
+        self.how = None
+        self.master.mainloop()          # Exited by self.quit(how)
+        if key:
+            directory, pattern = self.get_filter()
+            if self.how:
+                directory = os.path.dirname(self.how)
+            dialogstates[key] = directory, pattern
+        self.top.destroy()
+        return self.how
+
+    def quit(self, how=None):
+        self.how = how
+        self.master.quit()              # Exit mainloop()
+
+    def dirs_double_event(self, event):
+        self.filter_command()
+
+    def dirs_select_event(self, event):
+        dir, pat = self.get_filter()
+        subdir = self.dirs.get('active')
+        dir = os.path.normpath(os.path.join(self.directory, subdir))
+        self.set_filter(dir, pat)
+
+    def files_double_event(self, event):
+        self.ok_command()
+
+    def files_select_event(self, event):
+        file = self.files.get('active')
+        self.set_selection(file)
+
+    def ok_event(self, event):
+        self.ok_command()
+
+    def ok_command(self):
+        self.quit(self.get_selection())
+
+    def filter_command(self, event=None):
+        dir, pat = self.get_filter()
+        try:
+            names = os.listdir(dir)
+        except OSError:
+            self.master.bell()
+            return
+        self.directory = dir
+        self.set_filter(dir, pat)
+        names.sort()
+        subdirs = [os.pardir]
+        matchingfiles = []
+        for name in names:
+            fullname = os.path.join(dir, name)
+            if os.path.isdir(fullname):
+                subdirs.append(name)
+            elif fnmatch.fnmatch(name, pat):
+                matchingfiles.append(name)
+        self.dirs.delete(0, END)
+        for name in subdirs:
+            self.dirs.insert(END, name)
+        self.files.delete(0, END)
+        for name in matchingfiles:
+            self.files.insert(END, name)
+        head, tail = os.path.split(self.get_selection())
+        if tail == os.curdir: tail = ''
+        self.set_selection(tail)
+
+    def get_filter(self):
+        filter = self.filter.get()
+        filter = os.path.expanduser(filter)
+        if filter[-1:] == os.sep or os.path.isdir(filter):
+            filter = os.path.join(filter, "*")
+        return os.path.split(filter)
+
+    def get_selection(self):
+        file = self.selection.get()
+        file = os.path.expanduser(file)
+        return file
+
+    def cancel_command(self, event=None):
+        self.quit()
+
+    def set_filter(self, dir, pat):
+        if not os.path.isabs(dir):
+            try:
+                pwd = os.getcwd()
+            except OSError:
+                pwd = None
+            if pwd:
+                dir = os.path.join(pwd, dir)
+                dir = os.path.normpath(dir)
+        self.filter.delete(0, END)
+        self.filter.insert(END, os.path.join(dir or os.curdir, pat or "*"))
+
+    def set_selection(self, file):
+        self.selection.delete(0, END)
+        self.selection.insert(END, os.path.join(self.directory, file))
+
+
+class LoadFileDialog(FileDialog):
+
+    """File selection dialog which checks that the file exists."""
+
+    title = "Load File Selection Dialog"
+
+    def ok_command(self):
+        file = self.get_selection()
+        if not os.path.isfile(file):
+            self.master.bell()
+        else:
+            self.quit(file)
+
+
+class SaveFileDialog(FileDialog):
+
+    """File selection dialog which checks that the file may be created."""
+
+    title = "Save File Selection Dialog"
+
+    def ok_command(self):
+        file = self.get_selection()
+        if os.path.exists(file):
+            if os.path.isdir(file):
+                self.master.bell()
+                return
+            d = Dialog(self.top,
+                       title="Overwrite Existing File Question",
+                       text="Overwrite existing file %r?" % (file,),
+                       bitmap='questhead',
+                       default=1,
+                       strings=("Yes", "Cancel"))
+            if d.num != 0:
+                return
+        else:
+            head, tail = os.path.split(file)
+            if not os.path.isdir(head):
+                self.master.bell()
+                return
+        self.quit(file)
+
+
+# For the following classes and modules:
+#
+# options (all have default values):
+#
+# - defaultextension: added to filename if not explicitly given
+#
+# - filetypes: sequence of (label, pattern) tuples.  the same pattern
+#   may occur with several patterns.  use "*" as pattern to indicate
+#   all files.
+#
+# - initialdir: initial directory.  preserved by dialog instance.
+#
+# - initialfile: initial file (ignored by the open dialog).  preserved
+#   by dialog instance.
+#
+# - parent: which window to place the dialog on top of
+#
+# - title: dialog title
+#
+# - multiple: if true user may select more than one file
+#
+# options for the directory chooser:
+#
+# - initialdir, parent, title: see above
+#
+# - mustexist: if true, user must pick an existing directory
+#
+
+
+class _Dialog(commondialog.Dialog):
+
+    def _fixoptions(self):
+        try:
+            # make sure "filetypes" is a tuple
+            self.options["filetypes"] = tuple(self.options["filetypes"])
+        except KeyError:
+            pass
+
+    def _fixresult(self, widget, result):
+        if result:
+            # keep directory and filename until next time
+            # convert Tcl path objects to strings
+            try:
+                result = result.string
+            except AttributeError:
+                # it already is a string
+                pass
+            path, file = os.path.split(result)
+            self.options["initialdir"] = path
+            self.options["initialfile"] = file
+        self.filename = result # compatibility
+        return result
+
+
+#
+# file dialogs
+
+class Open(_Dialog):
+    "Ask for a filename to open"
+
+    command = "tk_getOpenFile"
+
+    def _fixresult(self, widget, result):
+        if isinstance(result, tuple):
+            # multiple results:
+            result = tuple([getattr(r, "string", r) for r in result])
+            if result:
+                path, file = os.path.split(result[0])
+                self.options["initialdir"] = path
+                # don't set initialfile or filename, as we have multiple of these
+            return result
+        if not widget.tk.wantobjects() and "multiple" in self.options:
+            # Need to split result explicitly
+            return self._fixresult(widget, widget.tk.splitlist(result))
+        return _Dialog._fixresult(self, widget, result)
+
+
+class SaveAs(_Dialog):
+    "Ask for a filename to save as"
+
+    command = "tk_getSaveFile"
+
+
+# the directory dialog has its own _fix routines.
+class Directory(commondialog.Dialog):
+    "Ask for a directory"
+
+    command = "tk_chooseDirectory"
+
+    def _fixresult(self, widget, result):
+        if result:
+            # convert Tcl path objects to strings
+            try:
+                result = result.string
+            except AttributeError:
+                # it already is a string
+                pass
+            # keep directory until next time
+            self.options["initialdir"] = result
+        self.directory = result # compatibility
+        return result
+
+#
+# convenience stuff
+
+
+def askopenfilename(**options):
+    "Ask for a filename to open"
+
+    return Open(**options).show()
+
+
+def asksaveasfilename(**options):
+    "Ask for a filename to save as"
+
+    return SaveAs(**options).show()
+
+
+def askopenfilenames(**options):
+    """Ask for multiple filenames to open
+
+    Returns a list of filenames or empty list if
+    cancel button selected
+    """
+    options["multiple"]=1
+    return Open(**options).show()
+
+# FIXME: are the following  perhaps a bit too convenient?
+
+
+def askopenfile(mode = "r", **options):
+    "Ask for a filename to open, and returned the opened file"
+
+    filename = Open(**options).show()
+    if filename:
+        return open(filename, mode)
+    return None
+
+
+def askopenfiles(mode = "r", **options):
+    """Ask for multiple filenames and return the open file
+    objects
+
+    returns a list of open file objects or an empty list if
+    cancel selected
+    """
+
+    files = askopenfilenames(**options)
+    if files:
+        ofiles=[]
+        for filename in files:
+            ofiles.append(open(filename, mode))
+        files=ofiles
+    return files
+
+
+def asksaveasfile(mode = "w", **options):
+    "Ask for a filename to save as, and returned the opened file"
+
+    filename = SaveAs(**options).show()
+    if filename:
+        return open(filename, mode)
+    return None
+
+
+def askdirectory (**options):
+    "Ask for a directory, and return the file name"
+    return Directory(**options).show()
+
+
+# --------------------------------------------------------------------
+# test stuff
+
+def test():
+    """Simple test program."""
+    root = Tk()
+    root.withdraw()
+    fd = LoadFileDialog(root)
+    loadfile = fd.go(key="test")
+    fd = SaveFileDialog(root)
+    savefile = fd.go(key="test")
+    print(loadfile, savefile)
+
+    # Since the file name may contain non-ASCII characters, we need
+    # to find an encoding that likely supports the file name, and
+    # displays correctly on the terminal.
+
+    # Start off with UTF-8
+    enc = "utf-8"
+
+    # See whether CODESET is defined
+    try:
+        import locale
+        locale.setlocale(locale.LC_ALL,'')
+        enc = locale.nl_langinfo(locale.CODESET)
+    except (ImportError, AttributeError):
+        pass
+
+    # dialog for opening files
+
+    openfilename=askopenfilename(filetypes=[("all files", "*")])
+    try:
+        fp=open(openfilename,"r")
+        fp.close()
+    except BaseException as exc:
+        print("Could not open File: ")
+        print(exc)
+
+    print("open", openfilename.encode(enc))
+
+    # dialog for saving files
+
+    saveasfilename=asksaveasfilename()
+    print("saveas", saveasfilename.encode(enc))
+
+
+if __name__ == '__main__':
+    test()

Dependencies/Python/Lib/tkinter/font.py

@@ -0,0 +1,239 @@
+# Tkinter font wrapper
+#
+# written by Fredrik Lundh, February 1998
+#
+
+import itertools
+import tkinter
+
+__version__ = "0.9"
+__all__ = ["NORMAL", "ROMAN", "BOLD", "ITALIC",
+           "nametofont", "Font", "families", "names"]
+
+# weight/slant
+NORMAL = "normal"
+ROMAN = "roman"
+BOLD   = "bold"
+ITALIC = "italic"
+
+
+def nametofont(name, root=None):
+    """Given the name of a tk named font, returns a Font representation.
+    """
+    return Font(name=name, exists=True, root=root)
+
+
+class Font:
+    """Represents a named font.
+
+    Constructor options are:
+
+    font -- font specifier (name, system font, or (family, size, style)-tuple)
+    name -- name to use for this font configuration (defaults to a unique name)
+    exists -- does a named font by this name already exist?
+       Creates a new named font if False, points to the existing font if True.
+       Raises _tkinter.TclError if the assertion is false.
+
+       the following are ignored if font is specified:
+
+    family -- font 'family', e.g. Courier, Times, Helvetica
+    size -- font size in points
+    weight -- font thickness: NORMAL, BOLD
+    slant -- font slant: ROMAN, ITALIC
+    underline -- font underlining: false (0), true (1)
+    overstrike -- font strikeout: false (0), true (1)
+
+    """
+
+    counter = itertools.count(1)
+
+    def _set(self, kw):
+        options = []
+        for k, v in kw.items():
+            options.append("-"+k)
+            options.append(str(v))
+        return tuple(options)
+
+    def _get(self, args):
+        options = []
+        for k in args:
+            options.append("-"+k)
+        return tuple(options)
+
+    def _mkdict(self, args):
+        options = {}
+        for i in range(0, len(args), 2):
+            options[args[i][1:]] = args[i+1]
+        return options
+
+    def __init__(self, root=None, font=None, name=None, exists=False,
+                 **options):
+        if root is None:
+            root = tkinter._get_default_root('use font')
+        tk = getattr(root, 'tk', root)
+        if font:
+            # get actual settings corresponding to the given font
+            font = tk.splitlist(tk.call("font", "actual", font))
+        else:
+            font = self._set(options)
+        if not name:
+            name = "font" + str(next(self.counter))
+        self.name = name
+
+        if exists:
+            self.delete_font = False
+            # confirm font exists
+            if self.name not in tk.splitlist(tk.call("font", "names")):
+                raise tkinter._tkinter.TclError(
+                    "named font %s does not already exist" % (self.name,))
+            # if font config info supplied, apply it
+            if font:
+                tk.call("font", "configure", self.name, *font)
+        else:
+            # create new font (raises TclError if the font exists)
+            tk.call("font", "create", self.name, *font)
+            self.delete_font = True
+        self._tk = tk
+        self._split = tk.splitlist
+        self._call  = tk.call
+
+    def __str__(self):
+        return self.name
+
+    def __repr__(self):
+        return f"<{self.__class__.__module__}.{self.__class__.__qualname__}" \
+               f" object {self.name!r}>"
+
+    def __eq__(self, other):
+        if not isinstance(other, Font):
+            return NotImplemented
+        return self.name == other.name and self._tk == other._tk
+
+    def __getitem__(self, key):
+        return self.cget(key)
+
+    def __setitem__(self, key, value):
+        self.configure(**{key: value})
+
+    def __del__(self):
+        try:
+            if self.delete_font:
+                self._call("font", "delete", self.name)
+        except Exception:
+            pass
+
+    def copy(self):
+        "Return a distinct copy of the current font"
+        return Font(self._tk, **self.actual())
+
+    def actual(self, option=None, displayof=None):
+        "Return actual font attributes"
+        args = ()
+        if displayof:
+            args = ('-displayof', displayof)
+        if option:
+            args = args + ('-' + option, )
+            return self._call("font", "actual", self.name, *args)
+        else:
+            return self._mkdict(
+                self._split(self._call("font", "actual", self.name, *args)))
+
+    def cget(self, option):
+        "Get font attribute"
+        return self._call("font", "config", self.name, "-"+option)
+
+    def config(self, **options):
+        "Modify font attributes"
+        if options:
+            self._call("font", "config", self.name,
+                  *self._set(options))
+        else:
+            return self._mkdict(
+                self._split(self._call("font", "config", self.name)))
+
+    configure = config
+
+    def measure(self, text, displayof=None):
+        "Return text width"
+        args = (text,)
+        if displayof:
+            args = ('-displayof', displayof, text)
+        return self._tk.getint(self._call("font", "measure", self.name, *args))
+
+    def metrics(self, *options, **kw):
+        """Return font metrics.
+
+        For best performance, create a dummy widget
+        using this font before calling this method."""
+        args = ()
+        displayof = kw.pop('displayof', None)
+        if displayof:
+            args = ('-displayof', displayof)
+        if options:
+            args = args + self._get(options)
+            return self._tk.getint(
+                self._call("font", "metrics", self.name, *args))
+        else:
+            res = self._split(self._call("font", "metrics", self.name, *args))
+            options = {}
+            for i in range(0, len(res), 2):
+                options[res[i][1:]] = self._tk.getint(res[i+1])
+            return options
+
+
+def families(root=None, displayof=None):
+    "Get font families (as a tuple)"
+    if root is None:
+        root = tkinter._get_default_root('use font.families()')
+    args = ()
+    if displayof:
+        args = ('-displayof', displayof)
+    return root.tk.splitlist(root.tk.call("font", "families", *args))
+
+
+def names(root=None):
+    "Get names of defined fonts (as a tuple)"
+    if root is None:
+        root = tkinter._get_default_root('use font.names()')
+    return root.tk.splitlist(root.tk.call("font", "names"))
+
+
+# --------------------------------------------------------------------
+# test stuff
+
+if __name__ == "__main__":
+
+    root = tkinter.Tk()
+
+    # create a font
+    f = Font(family="times", size=30, weight=NORMAL)
+
+    print(f.actual())
+    print(f.actual("family"))
+    print(f.actual("weight"))
+
+    print(f.config())
+    print(f.cget("family"))
+    print(f.cget("weight"))
+
+    print(names())
+
+    print(f.measure("hello"), f.metrics("linespace"))
+
+    print(f.metrics(displayof=root))
+
+    f = Font(font=("Courier", 20, "bold"))
+    print(f.measure("hello"), f.metrics("linespace", displayof=root))
+
+    w = tkinter.Label(root, text="Hello, world", font=f)
+    w.pack()
+
+    w = tkinter.Button(root, text="Quit!", command=root.destroy)
+    w.pack()
+
+    fb = Font(font=w["font"]).copy()
+    fb.config(weight=BOLD)
+
+    w.config(font=fb)
+
+    tkinter.mainloop()

Dependencies/Python/Lib/tkinter/messagebox.py

@@ -0,0 +1,146 @@
+# tk common message boxes
+#
+# this module provides an interface to the native message boxes
+# available in Tk 4.2 and newer.
+#
+# written by Fredrik Lundh, May 1997
+#
+
+#
+# options (all have default values):
+#
+# - default: which button to make default (one of the reply codes)
+#
+# - icon: which icon to display (see below)
+#
+# - message: the message to display
+#
+# - parent: which window to place the dialog on top of
+#
+# - title: dialog title
+#
+# - type: dialog type; that is, which buttons to display (see below)
+#
+
+from tkinter.commondialog import Dialog
+
+__all__ = ["showinfo", "showwarning", "showerror",
+           "askquestion", "askokcancel", "askyesno",
+           "askyesnocancel", "askretrycancel"]
+
+#
+# constants
+
+# icons
+ERROR = "error"
+INFO = "info"
+QUESTION = "question"
+WARNING = "warning"
+
+# types
+ABORTRETRYIGNORE = "abortretryignore"
+OK = "ok"
+OKCANCEL = "okcancel"
+RETRYCANCEL = "retrycancel"
+YESNO = "yesno"
+YESNOCANCEL = "yesnocancel"
+
+# replies
+ABORT = "abort"
+RETRY = "retry"
+IGNORE = "ignore"
+OK = "ok"
+CANCEL = "cancel"
+YES = "yes"
+NO = "no"
+
+
+#
+# message dialog class
+
+class Message(Dialog):
+    "A message box"
+
+    command  = "tk_messageBox"
+
+
+#
+# convenience stuff
+
+# Rename _icon and _type options to allow overriding them in options
+def _show(title=None, message=None, _icon=None, _type=None, **options):
+    if _icon and "icon" not in options:    options["icon"] = _icon
+    if _type and "type" not in options:    options["type"] = _type
+    if title:   options["title"] = title
+    if message: options["message"] = message
+    res = Message(**options).show()
+    # In some Tcl installations, yes/no is converted into a boolean.
+    if isinstance(res, bool):
+        if res:
+            return YES
+        return NO
+    # In others we get a Tcl_Obj.
+    return str(res)
+
+
+def showinfo(title=None, message=None, **options):
+    "Show an info message"
+    return _show(title, message, INFO, OK, **options)
+
+
+def showwarning(title=None, message=None, **options):
+    "Show a warning message"
+    return _show(title, message, WARNING, OK, **options)
+
+
+def showerror(title=None, message=None, **options):
+    "Show an error message"
+    return _show(title, message, ERROR, OK, **options)
+
+
+def askquestion(title=None, message=None, **options):
+    "Ask a question"
+    return _show(title, message, QUESTION, YESNO, **options)
+
+
+def askokcancel(title=None, message=None, **options):
+    "Ask if operation should proceed; return true if the answer is ok"
+    s = _show(title, message, QUESTION, OKCANCEL, **options)
+    return s == OK
+
+
+def askyesno(title=None, message=None, **options):
+    "Ask a question; return true if the answer is yes"
+    s = _show(title, message, QUESTION, YESNO, **options)
+    return s == YES
+
+
+def askyesnocancel(title=None, message=None, **options):
+    "Ask a question; return true if the answer is yes, None if cancelled."
+    s = _show(title, message, QUESTION, YESNOCANCEL, **options)
+    # s might be a Tcl index object, so convert it to a string
+    s = str(s)
+    if s == CANCEL:
+        return None
+    return s == YES
+
+
+def askretrycancel(title=None, message=None, **options):
+    "Ask if operation should be retried; return true if the answer is yes"
+    s = _show(title, message, WARNING, RETRYCANCEL, **options)
+    return s == RETRY
+
+
+# --------------------------------------------------------------------
+# test stuff
+
+if __name__ == "__main__":
+
+    print("info", showinfo("Spam", "Egg Information"))
+    print("warning", showwarning("Spam", "Egg Warning"))
+    print("error", showerror("Spam", "Egg Alert"))
+    print("question", askquestion("Spam", "Question?"))
+    print("proceed", askokcancel("Spam", "Proceed?"))
+    print("yes/no", askyesno("Spam", "Got it?"))
+    print("yes/no/cancel", askyesnocancel("Spam", "Want it?"))
+    print("try again", askretrycancel("Spam", "Try again?"))

Dependencies/Python/Lib/tkinter/scrolledtext.py

@@ -0,0 +1,56 @@
+"""A ScrolledText widget feels like a text widget but also has a
+vertical scroll bar on its right.  (Later, options may be added to
+add a horizontal bar as well, to make the bars disappear
+automatically when not needed, to move them to the other side of the
+window, etc.)
+
+Configuration options are passed to the Text widget.
+A Frame widget is inserted between the master and the text, to hold
+the Scrollbar widget.
+Most methods calls are inherited from the Text widget; Pack, Grid and
+Place methods are redirected to the Frame widget however.
+"""
+
+from tkinter import Frame, Text, Scrollbar, Pack, Grid, Place
+from tkinter.constants import RIGHT, LEFT, Y, BOTH
+
+__all__ = ['ScrolledText']
+
+
+class ScrolledText(Text):
+    def __init__(self, master=None, **kw):
+        self.frame = Frame(master)
+        self.vbar = Scrollbar(self.frame)
+        self.vbar.pack(side=RIGHT, fill=Y)
+
+        kw.update({'yscrollcommand': self.vbar.set})
+        Text.__init__(self, self.frame, **kw)
+        self.pack(side=LEFT, fill=BOTH, expand=True)
+        self.vbar['command'] = self.yview
+
+        # Copy geometry methods of self.frame without overriding Text
+        # methods -- hack!
+        text_meths = vars(Text).keys()
+        methods = vars(Pack).keys() | vars(Grid).keys() | vars(Place).keys()
+        methods = methods.difference(text_meths)
+
+        for m in methods:
+            if m[0] != '_' and m != 'config' and m != 'configure':
+                setattr(self, m, getattr(self.frame, m))
+
+    def __str__(self):
+        return str(self.frame)
+
+
+def example():
+    from tkinter.constants import END
+
+    stext = ScrolledText(bg='white', height=10)
+    stext.insert(END, __doc__)
+    stext.pack(fill=BOTH, side=LEFT, expand=True)
+    stext.focus_set()
+    stext.mainloop()
+
+
+if __name__ == "__main__":
+    example()

Dependencies/Python/Lib/tkinter/simpledialog.py

@@ -0,0 +1,441 @@
+#
+# An Introduction to Tkinter
+#
+# Copyright (c) 1997 by Fredrik Lundh
+#
+# This copyright applies to Dialog, askinteger, askfloat and asktring
+#
+# fredrik@pythonware.com
+# http://www.pythonware.com
+#
+"""This modules handles dialog boxes.
+
+It contains the following public symbols:
+
+SimpleDialog -- A simple but flexible modal dialog box
+
+Dialog -- a base class for dialogs
+
+askinteger -- get an integer from the user
+
+askfloat -- get a float from the user
+
+askstring -- get a string from the user
+"""
+
+from tkinter import *
+from tkinter import _get_temp_root, _destroy_temp_root
+from tkinter import messagebox
+
+
+class SimpleDialog:
+
+    def __init__(self, master,
+                 text='', buttons=[], default=None, cancel=None,
+                 title=None, class_=None):
+        if class_:
+            self.root = Toplevel(master, class_=class_)
+        else:
+            self.root = Toplevel(master)
+        if title:
+            self.root.title(title)
+            self.root.iconname(title)
+
+        _setup_dialog(self.root)
+
+        self.message = Message(self.root, text=text, aspect=400)
+        self.message.pack(expand=1, fill=BOTH)
+        self.frame = Frame(self.root)
+        self.frame.pack()
+        self.num = default
+        self.cancel = cancel
+        self.default = default
+        self.root.bind('<Return>', self.return_event)
+        for num in range(len(buttons)):
+            s = buttons[num]
+            b = Button(self.frame, text=s,
+                       command=(lambda self=self, num=num: self.done(num)))
+            if num == default:
+                b.config(relief=RIDGE, borderwidth=8)
+            b.pack(side=LEFT, fill=BOTH, expand=1)
+        self.root.protocol('WM_DELETE_WINDOW', self.wm_delete_window)
+        self.root.transient(master)
+        _place_window(self.root, master)
+
+    def go(self):
+        self.root.wait_visibility()
+        self.root.grab_set()
+        self.root.mainloop()
+        self.root.destroy()
+        return self.num
+
+    def return_event(self, event):
+        if self.default is None:
+            self.root.bell()
+        else:
+            self.done(self.default)
+
+    def wm_delete_window(self):
+        if self.cancel is None:
+            self.root.bell()
+        else:
+            self.done(self.cancel)
+
+    def done(self, num):
+        self.num = num
+        self.root.quit()
+
+
+class Dialog(Toplevel):
+
+    '''Class to open dialogs.
+
+    This class is intended as a base class for custom dialogs
+    '''
+
+    def __init__(self, parent, title = None):
+        '''Initialize a dialog.
+
+        Arguments:
+
+            parent -- a parent window (the application window)
+
+            title -- the dialog title
+        '''
+        master = parent
+        if master is None:
+            master = _get_temp_root()
+
+        Toplevel.__init__(self, master)
+
+        self.withdraw() # remain invisible for now
+        # If the parent is not viewable, don't
+        # make the child transient, or else it
+        # would be opened withdrawn
+        if parent is not None and parent.winfo_viewable():
+            self.transient(parent)
+
+        if title:
+            self.title(title)
+
+        _setup_dialog(self)
+
+        self.parent = parent
+
+        self.result = None
+
+        body = Frame(self)
+        self.initial_focus = self.body(body)
+        body.pack(padx=5, pady=5)
+
+        self.buttonbox()
+
+        if self.initial_focus is None:
+            self.initial_focus = self
+
+        self.protocol("WM_DELETE_WINDOW", self.cancel)
+
+        _place_window(self, parent)
+
+        self.initial_focus.focus_set()
+
+        # wait for window to appear on screen before calling grab_set
+        self.wait_visibility()
+        self.grab_set()
+        self.wait_window(self)
+
+    def destroy(self):
+        '''Destroy the window'''
+        self.initial_focus = None
+        Toplevel.destroy(self)
+        _destroy_temp_root(self.master)
+
+    #
+    # construction hooks
+
+    def body(self, master):
+        '''create dialog body.
+
+        return widget that should have initial focus.
+        This method should be overridden, and is called
+        by the __init__ method.
+        '''
+        pass
+
+    def buttonbox(self):
+        '''add standard button box.
+
+        override if you do not want the standard buttons
+        '''
+
+        box = Frame(self)
+
+        w = Button(box, text="OK", width=10, command=self.ok, default=ACTIVE)
+        w.pack(side=LEFT, padx=5, pady=5)
+        w = Button(box, text="Cancel", width=10, command=self.cancel)
+        w.pack(side=LEFT, padx=5, pady=5)
+
+        self.bind("<Return>", self.ok)
+        self.bind("<Escape>", self.cancel)
+
+        box.pack()
+
+    #
+    # standard button semantics
+
+    def ok(self, event=None):
+
+        if not self.validate():
+            self.initial_focus.focus_set() # put focus back
+            return
+
+        self.withdraw()
+        self.update_idletasks()
+
+        try:
+            self.apply()
+        finally:
+            self.cancel()
+
+    def cancel(self, event=None):
+
+        # put focus back to the parent window
+        if self.parent is not None:
+            self.parent.focus_set()
+        self.destroy()
+
+    #
+    # command hooks
+
+    def validate(self):
+        '''validate the data
+
+        This method is called automatically to validate the data before the
+        dialog is destroyed. By default, it always validates OK.
+        '''
+
+        return 1 # override
+
+    def apply(self):
+        '''process the data
+
+        This method is called automatically to process the data, *after*
+        the dialog is destroyed. By default, it does nothing.
+        '''
+
+        pass # override
+
+
+# Place a toplevel window at the center of parent or screen
+# It is a Python implementation of ::tk::PlaceWindow.
+def _place_window(w, parent=None):
+    w.wm_withdraw() # Remain invisible while we figure out the geometry
+    w.update_idletasks() # Actualize geometry information
+
+    minwidth = w.winfo_reqwidth()
+    minheight = w.winfo_reqheight()
+    maxwidth = w.winfo_vrootwidth()
+    maxheight = w.winfo_vrootheight()
+    if parent is not None and parent.winfo_ismapped():
+        x = parent.winfo_rootx() + (parent.winfo_width() - minwidth) // 2
+        y = parent.winfo_rooty() + (parent.winfo_height() - minheight) // 2
+        vrootx = w.winfo_vrootx()
+        vrooty = w.winfo_vrooty()
+        x = min(x, vrootx + maxwidth - minwidth)
+        x = max(x, vrootx)
+        y = min(y, vrooty + maxheight - minheight)
+        y = max(y, vrooty)
+        if w._windowingsystem == 'aqua':
+            # Avoid the native menu bar which sits on top of everything.
+            y = max(y, 22)
+    else:
+        x = (w.winfo_screenwidth() - minwidth) // 2
+        y = (w.winfo_screenheight() - minheight) // 2
+
+    w.wm_maxsize(maxwidth, maxheight)
+    w.wm_geometry('+%d+%d' % (x, y))
+    w.wm_deiconify() # Become visible at the desired location
+
+
+def _setup_dialog(w):
+    if w._windowingsystem == "aqua":
+        w.tk.call("::tk::unsupported::MacWindowStyle", "style",
+                  w, "moveableModal", "")
+    elif w._windowingsystem == "x11":
+        w.wm_attributes(type="dialog")
+
+# --------------------------------------------------------------------
+# convenience dialogues
+
+class _QueryDialog(Dialog):
+
+    def __init__(self, title, prompt,
+                 initialvalue=None,
+                 minvalue = None, maxvalue = None,
+                 parent = None):
+
+        self.prompt   = prompt
+        self.minvalue = minvalue
+        self.maxvalue = maxvalue
+
+        self.initialvalue = initialvalue
+
+        Dialog.__init__(self, parent, title)
+
+    def destroy(self):
+        self.entry = None
+        Dialog.destroy(self)
+
+    def body(self, master):
+
+        w = Label(master, text=self.prompt, justify=LEFT)
+        w.grid(row=0, padx=5, sticky=W)
+
+        self.entry = Entry(master, name="entry")
+        self.entry.grid(row=1, padx=5, sticky=W+E)
+
+        if self.initialvalue is not None:
+            self.entry.insert(0, self.initialvalue)
+            self.entry.select_range(0, END)
+
+        return self.entry
+
+    def validate(self):
+        try:
+            result = self.getresult()
+        except ValueError:
+            messagebox.showwarning(
+                "Illegal value",
+                self.errormessage + "\nPlease try again",
+                parent = self
+            )
+            return 0
+
+        if self.minvalue is not None and result < self.minvalue:
+            messagebox.showwarning(
+                "Too small",
+                "The allowed minimum value is %s. "
+                "Please try again." % self.minvalue,
+                parent = self
+            )
+            return 0
+
+        if self.maxvalue is not None and result > self.maxvalue:
+            messagebox.showwarning(
+                "Too large",
+                "The allowed maximum value is %s. "
+                "Please try again." % self.maxvalue,
+                parent = self
+            )
+            return 0
+
+        self.result = result
+
+        return 1
+
+
+class _QueryInteger(_QueryDialog):
+    errormessage = "Not an integer."
+
+    def getresult(self):
+        return self.getint(self.entry.get())
+
+
+def askinteger(title, prompt, **kw):
+    '''get an integer from the user
+
+    Arguments:
+
+        title -- the dialog title
+        prompt -- the label text
+        **kw -- see SimpleDialog class
+
+    Return value is an integer
+    '''
+    d = _QueryInteger(title, prompt, **kw)
+    return d.result
+
+
+class _QueryFloat(_QueryDialog):
+    errormessage = "Not a floating-point value."
+
+    def getresult(self):
+        return self.getdouble(self.entry.get())
+
+
+def askfloat(title, prompt, **kw):
+    '''get a float from the user
+
+    Arguments:
+
+        title -- the dialog title
+        prompt -- the label text
+        **kw -- see SimpleDialog class
+
+    Return value is a float
+    '''
+    d = _QueryFloat(title, prompt, **kw)
+    return d.result
+
+
+class _QueryString(_QueryDialog):
+    def __init__(self, *args, **kw):
+        if "show" in kw:
+            self.__show = kw["show"]
+            del kw["show"]
+        else:
+            self.__show = None
+        _QueryDialog.__init__(self, *args, **kw)
+
+    def body(self, master):
+        entry = _QueryDialog.body(self, master)
+        if self.__show is not None:
+            entry.configure(show=self.__show)
+        return entry
+
+    def getresult(self):
+        return self.entry.get()
+
+
+def askstring(title, prompt, **kw):
+    '''get a string from the user
+
+    Arguments:
+
+        title -- the dialog title
+        prompt -- the label text
+        **kw -- see SimpleDialog class
+
+    Return value is a string
+    '''
+    d = _QueryString(title, prompt, **kw)
+    return d.result
+
+
+if __name__ == '__main__':
+
+    def test():
+        root = Tk()
+        def doit(root=root):
+            d = SimpleDialog(root,
+                         text="This is a test dialog.  "
+                              "Would this have been an actual dialog, "
+                              "the buttons below would have been glowing "
+                              "in soft pink light.\n"
+                              "Do you believe this?",
+                         buttons=["Yes", "No", "Cancel"],
+                         default=0,
+                         cancel=2,
+                         title="Test Dialog")
+            print(d.go())
+            print(askinteger("Spam", "Egg count", initialvalue=12*12))
+            print(askfloat("Spam", "Egg weight\n(in tons)", minvalue=1,
+                           maxvalue=100))
+            print(askstring("Spam", "Egg label"))
+        t = Button(root, text='Test', command=doit)
+        t.pack()
+        q = Button(root, text='Quit', command=t.quit)
+        q.pack()
+        t.mainloop()
+
+    test()