#-----------------------------------------------------------------------------
# Name:        controls.py
# Purpose:     miscellaneous wxPython controls
#
# Author:      Rob McMullen
#
# Created:     2007
# RCS-ID:      $Id: $
# Copyright:   (c) 2007 Rob McMullen
# License:     wxWidgets
#-----------------------------------------------------------------------------
"""Miscellaneous wx controls.

This file contains various wx controls that don't have any
dependencies on other parts of peppy.
"""

import os, weakref, time
from cStringIO import StringIO

import wx
from wx.lib import buttons
from wx.lib import imageutils
from wx.lib.pubsub import Publisher
from wx.lib.filebrowsebutton import *
import wx.gizmos

from peppy.lib.iconstorage import *
try:
    from peppy.debug import *
except:
    def dprint(txt=""):
        #print txt
        pass

if not '_' in dir():
    _ = unicode


class TreeListCtrl(wx.gizmos.TreeListCtrl):
    def getText(self, parent=None, cookie=None, fh=None, indent=""):
        if parent is None:
            fh = StringIO()
            parent = self.GetRootItem()
        (child, cookie) = self.GetFirstChild(parent)

        while child.IsOk():
            text = "\t".join([self.GetItemText(child, i) for i in range(self.GetColumnCount())])
            fh.write("%s%s%s" % (indent, text, os.linesep))
            if self.ItemHasChildren(child) and self.IsExpanded(child):
                self.getText(child, cookie, fh, indent + "  ")
            (child, cookie) = self.GetNextChild(parent, cookie)
        
        if not indent:
            return fh.getvalue()


class StatusBarButton(wx.lib.buttons.GenBitmapButton):
    """A minimally sized bitmap button for use in the statusbar.

    This is a small-sized button for use in the status bar that
    doesn't have the usual button highlight or button-pressed cues.
    Trying to mimic the Mozilla statusbar buttons as much as possible.
    """
    labelDelta = 0

    def AcceptsFocus(self):
        return False

    def _GetLabelSize(self):
        """ used internally """
        if not self.bmpLabel:
            return -1, -1, False
        return self.bmpLabel.GetWidth(), self.bmpLabel.GetHeight(), False

    def DoGetBestSize(self):
        """
        Overridden base class virtual.  Determines the best size of the
        button based on the label and bezel size.
        """
        width, height, useMin = self._GetLabelSize()
        return (width, height)
    
    def GetBackgroundBrush(self, dc):
        return None


class ModularStatusBarInfo(object):
    """Data object used to store the state of a particular major mode's status
    bar.
    
    This is a flyweight object -- the data stored here is applied to the
    L{ModularStatusBar} instance that actually contains the controls.
    """
    def __init__(self, parent, widths=[-1, 150]):
        self.parent = parent
        self.widths = widths
        
        self.cancel_label = _("Cancel")
        self.text = [' ' for w in self.widths]
        
        self.gauge_value = 0
        self.gauge_width = 100
        self.gauge_max = 100
        
        self.gauge_text = None
        self.gauge_delay = 0
        self.gauge_start_time = 0
        self.gauge_shown = False
        self.gauge_refresh_trigger = 0
        self.gauge_refresh_count = 0
        
        self.disable_during_progress = False
        self.message = None
        
        self.overlays = []
        self.active_controls = []
        
        self.show_cancel = False
        self.cancelled = False
        
        self.debug_progress = False

        self.resetProgress()

    def resetProgress(self):
        """Reset the parent's state based on the info contained in this object
        
        Because this class is a Flyweight, the parent's controls are updated
        using the data contained in this object, and this method forces the
        objects back to the state that this major mode is expecting.  For
        example, it resets the progress bar max value to the value that was
        last set by this major mode.
        """
        if self.parent.info == self:
            self.parent.setWidths()
            self.parent.gauge.SetRange(self.gauge_max)
            # Force gauge text to be reset
            text = self.gauge_text
            self.gauge_text = None
            self.setProgressPosition(self.gauge_value, text)
            if self.debug_progress: dprint("Reset progress: %s" % text)
    
    def resetIcons(self):
        """Reset the status bar so no icons are visible"""
        self.active_controls = []

    def addIcon(self, bmp, tooltip=None):
        """Append an icon to the right side of the status bar"""
        b = self.parent.getIcon(bmp, tooltip)
        self.active_controls.append(b)
        if self.parent.info == self:
            self.parent.setWidths()
    
    def setText(self, text, field=0):
        self.text[field] = text
        if self.parent.info == self:
            self.parent.SetStatusText(text, field)
    
    def getLastMessage(self, field=0):
        return self.text[field]

    def startProgress(self, text, max=100, cancel=False, message=None, delay=0, disable=False):
        """Create a progress meter in the status bar.
        
        Creates a gauge in the status bar with optional cancel button.  Unless
        a delay is used, it is up to the user to call wx.Yield to show the
        progress bar.
        
        If a delay is used, wx.Yield will be called after the initial delay and
        during calls to updateProgress after the same number of ticks pass as
        occurred during the initial delay.
        
        @param text: text to display to the left of the progress bar
        
        @param max: maximum number of ticks in the gauge
        
        @param cancel: (optional) True to display a cancel button
        
        @param message: (optional) wx.lib.pubsub message that will be listened
        for to update the progress bar
        
        @param delay: (optional) delay in seconds before displaying the gauge.
        This can be used if the length of the operation is unknown but want
        to avoid the progress bar if it turns out to be quick.
        """
        if self.debug_progress: dprint("Start progress: %s, msg=%s max=%d" % (text, message, max))
        self.in_progress = True
        self.gauge_max = max
        self.cancelled = False
        self.show_cancel = cancel
        self.disable_during_progress = disable
        
        self.gauge_text = text
        self.gauge_delay = delay
        self.gauge_show_time = time.time() + delay
        self.gauge_shown = False
        self.gauge_refresh_trigger = 0
        self.gauge_refresh_count = 0
        
        self.overlays = []
        self.overlays.append((self.parent.gauge, self.gauge_width))

        if self.show_cancel:
            dc=wx.ClientDC(self.parent)
            tw, th = dc.GetTextExtent(self.cancel_label)
            tw += 20 # add some padding to the text for button border
            self.overlays.append((self.parent.cancel, tw))

        if message:
            Publisher().subscribe(self.updateMessage, message)
            self.message = message
        
        self.updateProgress(0)
        if self.gauge_delay == 0:
            if self.parent.info == self:
                self._showProgress()
            self.gauge_shown = True
    
    def _showProgress(self, max=None):
        if max is not None:
            self.gauge_max = max
        self.parent.gauge.SetRange(self.gauge_max)
        self.setText(self.gauge_text)
        self.parent.setWidths()

    def setProgressPosition(self, value, text=None, max=None):
        """Set the progress bar and text to the current values
        
        This is used to set the text and gauge position based on the current
        values stored in this info object.
        """
        if self.gauge_shown:
            if value < 0:
                self.parent.gauge.Pulse()
            else:
                if max is not None:
                    self.gauge_max = max
                    self.parent.gauge.SetRange(self.gauge_max)
                if self.debug_progress: dprint("update position: %s, msg=%s val=%d, max=%d" % (text, self.message, value, self.gauge_max))
                if value > self.gauge_max:
                    value = self.gauge_max
                self.parent.gauge.SetValue(value)
            self.gauge_value = value
            if text is not None:
                if text != self.gauge_text:
                    self.setText(text)
                    self.gauge_text = text

    def updateProgress(self, value, text=None, max=None):
        """Update the progress bar with a new value
        
        @param value: either a number or a list.  If it is a number, it will
        be taken as the value of the progress bar.  If it is a list, the first
        item in the list must be the value of the progress bar, and the second
        item must be a text string with will be used to update the status text.
        
        @param text: another way to specify the optional text with which to
        update the status string.
        
        @param max: change the maximum value of the gauge if given
        """
        if isinstance(value, list):
            value, text = value
        do_yield = False
        update = False
        if self.gauge_delay > 0:
            self.gauge_refresh_count += 1
            if time.time() > self.gauge_show_time:
                if not self.gauge_shown:
                    self._showProgress(max)
                    self.gauge_shown = True
                    self.gauge_refresh_trigger = self.gauge_refresh_count
                if self.gauge_refresh_count >= self.gauge_refresh_trigger:
                    self.gauge_refresh_count = 0
                    do_yield = True
                    update = True
        else:
            update = True
        if update and self.parent.info == self:
            self.setProgressPosition(value, text, max)
        if do_yield:
            if self.disable_during_progress:
                wx.SafeYield(onlyIfNeeded=True)
            else:
                wx.GetApp().Yield(True)
    
    def isCancelled(self):
        return self.cancelled
    
    def isInProgress(self):
        return bool(self.overlays)

    def stopProgress(self, text="Completed.", force_text=True):
        if self.cancelled:
            self.setText("Cancelled.")
        elif self.gauge_shown or force_text:
            self.setText(text)
        self.overlays = []
        Publisher().unsubscribe(self.updateMessage)
        self.message = None
        if self.parent.info == self:
            self.parent.setWidths()
        
    def updateMessage(self, msg):
        value = msg.data
        wx.CallAfter(self.updateProgress, value)


class ModularStatusBar(wx.StatusBar):
    def __init__(self, parent, widths=[-1, 150]):
        wx.StatusBar.__init__(self, parent, -1)

        if wx.Platform == '__WXGTK__':
            self.spacing = 3
        else:
            self.spacing = 0
        self.controls = {}
        
        self.info = None
        self.default_info = ModularStatusBarInfo(self, widths)
        self.info = self.default_info

        self.gauge = wx.Gauge(self, -1, 100)
        self.gauge.Hide()
        self.cancel = wx.Button(self, -1, _("Cancel"))
        self.cancel.Hide()
        self.Bind(wx.EVT_BUTTON, self.OnCancel, self.cancel)
        
        self.setWidths()

        self.sizeChanged = False
        self.Bind(wx.EVT_SIZE, self.OnSize)
        self.Bind(wx.EVT_IDLE, self.OnIdle)
        parent.SetStatusBar(self)
        self.Show()
    
    def changeInfo(self, info=None):
        if info:
            self.info = info
        else:
            self.info = self.default_info
        self.info.resetProgress()

    def setWidths(self):
        self.widths = [i for i in self.info.widths]
        for widget in self.info.active_controls:
            self.widths.append(widget.GetSizeTuple()[0] + 2*self.spacing)
        self.widths.append(16 + 2*self.spacing) # leave space for the resizer
        self.SetFieldsCount(len(self.widths))
        self.SetStatusWidths(self.widths)
        for i in range(len(self.widths)):
            if i < len(self.info.widths):
                self.SetStatusText(self.info.text[i], i)
            else:
                self.SetStatusText(' ', i)
        self.Reposition()
        
    def getIcon(self, bmp, tooltip=None):
        if isinstance(bmp,str):
            bmp = getIconBitmap(bmp)
        if bmp not in self.controls:
            b = StatusBarButton(self, -1, bmp, style=wx.BORDER_NONE, pos=(9000,9000))
            b.Hide()
            self.controls[bmp] = b
        btn = self.controls[bmp]
        if tooltip:
            btn.SetToolTipString(tooltip)
        return btn

    def OnSize(self, evt):
        self.Reposition()  # for normal size events

        # Set a flag so the idle time handler will also do the repositioning.
        # It is done this way to get around a buglet where GetFieldRect is not
        # accurate during the EVT_SIZE resulting from a frame maximize.
        self.sizeChanged = True

    def OnIdle(self, evt):
        if self.sizeChanged:
            self.Reposition()

    # reposition the checkbox
    def Reposition(self):
        shown = {}
        if self.info.active_controls:
            field = len(self.info.widths)
            for widget in self.info.active_controls:
                rect = self.GetFieldRect(field)
                #dprint(rect)
                size = widget.GetSize()
                #dprint(size)
                xoffset = (rect.width - size.width)/2
                yoffset = (rect.height - size.height)/2
                #dprint((xoffset, yoffset))
                widget.SetPosition((rect.x + xoffset,
                                  rect.y + yoffset + self.spacing))
                #widget.SetSize((rect.width-4, rect.height-4))
                shown[widget] = True
                
                field += 1
        for widget in self.controls.values():
            state = widget in shown
            widget.Show(state)
            
        shown = {}
        if self.info.overlays:
            rect = self.GetFieldRect(0)
            x = rect.width
            overlays = [a for a in self.info.overlays]
            overlays.reverse()
            shown = {}
            for widget, width in overlays:
                x -= width
                widget.SetPosition((x, rect.y))
                widget.SetSize((width, rect.height))
                #print("x=%d width=%d widget=%s" % (x, width, widget))
                shown[widget] = True
        for widget in [self.gauge, self.cancel]:
            state = widget in shown
            widget.Show(state)
        self.sizeChanged = False

    def OnCancel(self, evt):
        self.info.cancelled = True


class FontBrowseButton(wx.Panel):
    """Simple panel and button to choose and display a new font.
    
    Borrowed from the wxPython demo.
    """
    
    def __init__(self, parent, font=None):
        wx.Panel.__init__(self, parent, -1)

        btn = wx.Button(self, -1, "Select Font")
        self.Bind(wx.EVT_BUTTON, self.OnSelectFont, btn)

        self.sampleText = wx.TextCtrl(self, -1, size=(150, -1), style=wx.TE_CENTRE)
        self.sampleText.SetEditable(False)
        self.sampleText.SetBackgroundColour(wx.WHITE)
        
        if font is None:
            self.curFont = self.sampleText.GetFont()
        else:
            self.curFont = font
        self.curClr = wx.BLACK
        
        sizer = wx.BoxSizer(wx.HORIZONTAL)
        sizer.Add(self.sampleText, 1, wx.EXPAND)
        sizer.Add(btn, 0, wx.EXPAND)

        self.SetSizer(sizer)
        self.UpdateUI()

    def UpdateUI(self):
        self.sampleText.SetFont(self.curFont)
        self.sampleText.SetForegroundColour(self.curClr)
        self.sampleText.SetValue("%s %s" % (self.curFont.GetFaceName(), self.curFont.GetPointSize()))
        self.Layout()

    def OnSelectFont(self, evt):
        data = wx.FontData()
        data.EnableEffects(True)
        data.SetColour(self.curClr)         # set colour
        data.SetInitialFont(self.curFont)

        dlg = wx.FontDialog(self, data)
        
        if dlg.ShowModal() == wx.ID_OK:
            data = dlg.GetFontData()
            font = data.GetChosenFont()
            colour = data.GetColour()

#            print('You selected: "%s", %d points, color %s\n' %
#                               (font.GetFaceName(), font.GetPointSize(),
#                                colour.Get()))

            self.curFont = font
            self.curClr = colour
            self.UpdateUI()

        # Don't destroy the dialog until you get everything you need from the
        # dialog!
        dlg.Destroy()
        
    def getFont(self):
        return self.curFont
        
    def setFont(self, font):
        if font is not None:
            self.curFont = font
        self.UpdateUI()


class FileBrowseButton2(FileBrowseButton):
    """Small enhancements to FileBrowseButton"""
    def createDialog( self, parent, id, pos, size, style, *args, **kwargs):
        """Setup the graphic representation of the dialog"""
        wx.Panel.__init__ (self, parent, id, pos, size, style, *args, **kwargs)
        self.SetMinSize(size) # play nice with sizers

        box = wx.BoxSizer(wx.HORIZONTAL)

        self.label = self.createLabel( )
        #box.Add( self.label, 0, wx.CENTER )

        self.textControl = self.createTextControl()
        box.Add( self.textControl, 1, wx.LEFT|wx.CENTER, 0)

        self.browseButton = self.createBrowseButton()
        box.Add( self.browseButton, 0, wx.LEFT|wx.CENTER, 5)

        # add a border around the whole thing and resize the panel to fit
        outsidebox = wx.BoxSizer(wx.VERTICAL)
        outsidebox.Add(box, 1, wx.EXPAND|wx.ALL, 0)
        outsidebox.Fit(self)

        self.SetAutoLayout(True)
        self.SetSizer( outsidebox )
        self.Layout()
        if type( size ) == types.TupleType:
            size = apply( wx.Size, size)
        self.SetDimensions(-1, -1, size.width, size.height, wx.SIZE_USE_EXISTING)
        
    def SetToolTipString(self, text):
        #dprint(text)
        self.textControl.SetToolTipString(text)
        
    def IsEnabled(self):
        """Make IsEnabled work by returning the enabled state of the
        text control
        """
        # FileBrowseButton never sets the enabled state of the panel
        # itself, so it always returns True.  Make it return the state
        # of the text control, which should indicate the real enabled state.
        return self.textControl.IsEnabled()
    
    def OnBrowse(self, event=None):
        """Replacing the default action because it doesn't check for bad
        directories.
        """
        current = self.GetValue()
        directory = os.path.split(current)
        if os.path.isdir( current):
            directory = current
            current = ''
        elif directory and os.path.isdir( directory[0] ):
            current = directory[1]
            directory = directory [0]
        else:
            current = ''
            directory = self.startDirectory
        dprint(current)
        dprint(directory)
        dlg = wx.FileDialog(self, self.dialogTitle, directory, current,
                            self.fileMask, self.fileMode)

        if dlg.ShowModal() == wx.ID_OK:
            self.SetValue(dlg.GetPath())
        dlg.Destroy()

    def SetValue (self, value, callBack=1):
        """set current value of text control"""
        if callBack:
            self.textControl.SetValue(value)
        else:
            self.textControl.ChangeValue(value)


class DirBrowseButton2(FileBrowseButton2):
    """Update to dir browse button to browse to the currently set
    directory instead of always using the initial directory.
    """
    def createDialog(self, *args, **kwargs):
        """Automatically hide the label because it's not used here"""
        FileBrowseButton2.createDialog(self, *args, **kwargs)
        self.dialogClass = wx.DirDialog
        self.newDirectory = False
        
    def OnBrowse(self, ev = None):
        current = self.GetValue()
        directory = os.path.split(current)
        if os.path.isdir( current):
            directory = current
            current = ''
        elif directory and os.path.isdir( directory[0] ):
            current = directory[1]
            directory = directory [0]
        else:
            directory = self.startDirectory

        style=0

        if not self.newDirectory:
          style |= wx.DD_DIR_MUST_EXIST

        dialog = self.dialogClass(self,
                                  message = self.dialogTitle,
                                  defaultPath = directory,
                                  style = style)

        if dialog.ShowModal() == wx.ID_OK:
            self.SetValue(dialog.GetPath())
        dialog.Destroy()


class CredentialsDialog(wx.Dialog):
    def __init__(self, parent, title="Authentication Required", url=None, realm=None, username=None):
        wx.Dialog.__init__(self, parent, -1, title,
                           size=wx.DefaultSize, pos=wx.DefaultPosition, 
                           style=wx.DEFAULT_DIALOG_STYLE)

        sizer = wx.BoxSizer(wx.VERTICAL)

        message = ""
        if url:
            message += "A username and password are being requested by %s\n" % url
        if realm:
            message += "The site says: \"%s\"" % realm
        label = wx.StaticText(self, -1, message)
        sizer.Add(label, 0, flag=wx.ALIGN_CENTRE|wx.ALL)
        
        bag = wx.GridBagSizer(5, 5)
        bag.AddGrowableCol(1)
        
        label = wx.StaticText(self, label=_("Username") + u":")
        bag.Add(label, (1, 0), flag=wx.ALIGN_RIGHT|wx.ALIGN_CENTRE_VERTICAL|wx.ALL)
        self.username = wx.TextCtrl(self, -1)
        bag.Add(self.username, (1, 1), flag=wx.ALIGN_LEFT|wx.ALL|wx.EXPAND)
        
        label = wx.StaticText(self, label=_("Password") + u":")
        bag.Add(label, (2, 0), flag=wx.ALIGN_RIGHT|wx.ALIGN_CENTRE_VERTICAL|wx.ALL)
        self.password = wx.TextCtrl(self, -1, style=wx.TE_PASSWORD)
        bag.Add(self.password, (2, 1), flag=wx.ALIGN_LEFT|wx.ALL|wx.EXPAND)
        
        sizer.Add(bag, 1, wx.EXPAND)
        
        btnsizer = wx.StdDialogButtonSizer()
        
        btn = wx.Button(self, wx.ID_OK)
        btn.SetDefault()
        btnsizer.AddButton(btn)

        btn = wx.Button(self, wx.ID_CANCEL)
        btnsizer.AddButton(btn)
        btnsizer.Realize()

        sizer.Add(btnsizer, 0, wx.ALIGN_CENTER_VERTICAL|wx.ALL, 5)
        
        self.SetSizer(sizer)
        sizer.Fit(self)

        self.Layout()
        
        if username:
            self.username.SetValue(username)
            self.password.SetFocus()
        else:
            self.username.SetFocus()
    
    def getUsername(self):
        return self.username.GetValue()
    
    def getPassword(self):
        return self.password.GetValue()




if __name__ == "__main__":
    class TestFrame(wx.Frame):
        def __init__(self, parent):
            wx.Frame.__init__(self, parent, -1, "Status Bar Test", wx.DefaultPosition, wx.DefaultSize)
            self.statusbar = ModularStatusBar(self)
            
            sizer = wx.BoxSizer(wx.VERTICAL)
            
            font = FontBrowseButton(self)
            sizer.Add(font, 0, wx.EXPAND)
            
            button1 = wx.Button(self, -1, "Statusbar 1")
            button1.Bind(wx.EVT_BUTTON, self.setStatus1)
            sizer.Add(button1, 0, wx.EXPAND)
            self.status_info1 = self.statusbar.info
            self.status_info1.addIcon("icons/windows.png", "DOS/Windows line endings")
            self.status_info1.addIcon("icons/apple.png", "Old-style Apple line endings")
            self.status_info1.addIcon("icons/tux.png", "Unix line endings")
            self.status_info1.setText("Status Bar 1")
            
            button2 = wx.Button(self, -1, "Statusbar 2")
            button2.Bind(wx.EVT_BUTTON, self.setStatus2)
            sizer.Add(button2, 0, wx.EXPAND)
            self.status_info2 = ModularStatusBarInfo(self.statusbar, [50, -1])
            self.status_info2.setText("Status Bar 2")
            self.status_info2.setText("blah", 1)

            button3 = wx.Button(self, -1, "Statusbar 3")
            button3.Bind(wx.EVT_BUTTON, self.setStatus3)
            sizer.Add(button3, 0, wx.EXPAND)
            self.status_info3 = ModularStatusBarInfo(self.statusbar, [150, -1])
            self.status_info3.addIcon("icons/tux.png", "Unix line endings")
            self.status_info3.addIcon("icons/apple.png", "Old-style Apple line endings")
            self.status_info3.setText("Status Bar 3")
            self.status_info3.startProgress("Stuff!")
            self.count3 = 0

            button4 = wx.Button(self, -1, "Statusbar 4")
            button4.Bind(wx.EVT_BUTTON, self.setStatus4)
            sizer.Add(button4, 0, wx.EXPAND)
            self.status_info4 = ModularStatusBarInfo(self.statusbar, [-1])
            self.status_info4.addIcon("icons/apple.png", "Old-style Apple line endings")
            self.status_info4.setText("Status Bar 4")
            self.status_info4.startProgress("Stuff!", cancel=True)
            self.count4 = 0

            self.timer = wx.Timer(self)
            self.Bind(wx.EVT_TIMER, self.OnTimer)
            self.timer.Start(1000/10)

            login = wx.Button(self, -1, "Show Login")
            login.Bind(wx.EVT_BUTTON, self.showLogin)
            sizer.Add(login, 0, wx.EXPAND)

            self.SetAutoLayout(1)
            self.SetSizer(sizer)
            self.Show(1)
        
        def OnTimer(self, evt):
            self.count3 = (self.count3 + 1) % 100
            self.status_info3.updateProgress(self.count3)
            if self.status_info4.isInProgress():
                if self.status_info4.isCancelled():
                    self.status_info4.stopProgress()
                else:
                    self.count4 = (self.count4 + 3) % 100
                    self.status_info4.updateProgress(self.count4)
        
        def setStatus1(self, evt):
            print("status 1")
            self.statusbar.changeInfo(self.status_info1)
            evt.Skip()
            
        def setStatus2(self, evt):
            print("status 2")
            self.statusbar.changeInfo(self.status_info2)
            evt.Skip()

        def setStatus3(self, evt):
            print("status 3")
            self.statusbar.changeInfo(self.status_info3)
            evt.Skip()

        def setStatus4(self, evt):
            print("status 4")
            self.statusbar.changeInfo(self.status_info4)
            evt.Skip()

        def showLogin(self, evt):
            wx.CallAfter(self.showLoginCallback)
        
        def showLoginCallback(self):
            dlg = CredentialsDialog(self, url="http://some.web.site", realm="Files and Stuff")
            ret = dlg.ShowModal()
            if ret == wx.ID_OK:
                dprint("username=%s, password=%s" % (dlg.getUsername(), dlg.getPassword()))
            dlg.Destroy()

    app   = wx.PySimpleApp()
    frame = TestFrame(None)
    
    app.MainLoop()