Panel 1 - panelOne.py

import wx
import ectworker as EW
import panelTwo as pTwo
import panelThree as pThree
import commonDlgs as cdlg

TabLabel = 'Input Panel'

class TabPanel(wx.Panel):
    def __init__(self, parent):
        wx.Panel.__init__(self, parent)
        self.topSizer = wx.BoxSizer(wx.VERTICAL) # <- This is the main container

# Creating the widgets we will be using
        labelOne = wx.StaticText(self, wx.ID_ANY, ' One: ')
        self.inputTxtOne = wx.TextCtrl(self, wx.ID_ANY, 'Click Browse...')
        btnBrwsOne = wx.Button(self, wx.ID_ANY, 'Browse')
        btnClrOne = wx.Button(self, wx.ID_ANY, 'Clear')

        labelTwo = wx.StaticText(self, wx.ID_ANY, ' Two:         ')
        self.inputTxtTwo = wx.TextCtrl(self, wx.ID_ANY, 'Click Browse...')
        btnBrwsTwo = wx.Button(self, wx.ID_ANY, 'Browse')
        btnClrTwo = wx.Button(self, wx.ID_ANY, 'Clear')

        labelThree = wx.StaticText(self, wx.ID_ANY, ' Three: ')
        self.inputTxtThree = wx.TextCtrl(self, wx.ID_ANY, 'Click Browse...')
        btnBrwsThree = wx.Button(self, wx.ID_ANY, 'Browse')
        btnClrThree = wx.Button(self, wx.ID_ANY, 'Clear')

        okBtn = wx.Button(self, wx.ID_ANY, 'Run')
        clearBtn = wx.Button(self, wx.ID_ANY, 'Clear All')

# Adding the widgets to the main sizer
        self.AddToSizer(labelOne, self.inputTxtOne, wx.ALL|wx.EXPAND)
        self.AddButtons(btnBrwsOne, btnClrOne, wx.ALL|wx.EXPAND)
        self.topSizer.Add(wx.StaticLine(self), 0, wx.ALL|wx.EXPAND, 5)
        self.AddToSizer(labelTwo, self.inputTxtTwo, wx.ALL|wx.EXPAND)
        self.AddButtons(btnBrwsTwo, btnClrTwo, wx.ALL|wx.EXPAND)
        self.topSizer.Add(wx.StaticLine(self), 0, wx.ALL|wx.EXPAND, 5)
        self.AddToSizer(labelThree, self.inputTxtThree, wx.ALL|wx.EXPAND)
        self.AddButtons(btnBrwsThree, btnClrThree, wx.ALL|wx.EXPAND)
        self.topSizer.Add(wx.StaticLine(self), 0, wx.ALL|wx.EXPAND, 5)
        self.AddButtons(okBtn, clearBtn, wx.CENTER)
        self.SetSizer(self.topSizer)

# Binding events to the buttons
        self.Bind(wx.EVT_BUTTON, self.OnBrowseOne, btnBrwsOne)
        self.Bind(wx.EVT_BUTTON, self.OnBrowseTwo, btnBrwsTwo)
        self.Bind(wx.EVT_BUTTON, self.OnBrowseThree, btnBrwsThree)
        self.Bind(wx.EVT_BUTTON, self.OnBrowseHealth, btnBrwsHealth)
        self.Bind(wx.EVT_BUTTON, self.OnClearInv, btnClrOne)
        self.Bind(wx.EVT_BUTTON, self.OnClearSales, btnClrTwo)
        self.Bind(wx.EVT_BUTTON, self.OnClearMeta, btnClrThree)
        self.Bind(wx.EVT_BUTTON, self.OnRun, okBtn)
        self.Bind(wx.EVT_BUTTON, self.OnClearAll, clearBtn)

# Adjust the widget properties
    # Input text fields
        self.ApplyTextAttributes(self.inputTxtOne)
        self.ApplyTextAttributes(self.inputTxtTwo)
        self.ApplyTextAttributes(self.inputTxtThree)
    # One
        self.ApplyBtnAttributes(btnBrwsOne, 'Select the first file.')
        self.ApplyBtnAttributes(btnClrOne, 'Clear first file Field')
    # Two
        self.ApplyBtnAttributes(btnBrwsTwo, 'Select the second file.')
        self.ApplyBtnAttributes(btnClrTwo, 'Clear second file Field')
    # Three
        self.ApplyBtnAttributes(btnBrwsThree, 'Select the Control file.')
        self.ApplyBtnAttributes(btnClrThree, 'Clear Control file Field')
    # Ok and Clear All buttons
        self.ApplyBtnAttributes(okBtn, 'Run Application')
        self.ApplyBtnAttributes(clearBtn, 'Exit Application')

# "Dynamic" add widget to main sizer definition.
    def AddToSizer(self, item1, item2, flags):
        hSizer = wx.BoxSizer(wx.HORIZONTAL)
        hSizer.Add(item1, 0, wx.ALL|wx.EXPAND, 5)
        if item2 != None:
            hSizer.Add(item2, 1, wx.ALL|wx.EXPAND, 5)
        self.topSizer.Add(hSizer, 0, flags, 5)

# Adding button's to main sizer
    def AddButtons(self, item1, item2, flags):
        hSizer = wx.BoxSizer(wx.HORIZONTAL)
        hSizer.Add(item1, 0, wx.ALL|wx.EXPAND, 5)
        hSizer.Add(item2, 0, wx.ALL|wx.EXPAND, 5)
        self.topSizer.Add(hSizer, 0, flags, 5)

# Set text field properties
    def ApplyTextAttributes(self, item1):
        item1.SetBackgroundColour((255, 255, 255))
        item1.SetCursor(wx.StockCursor(wx.CURSOR_NO_ENTRY))
        item1.SetToolTip(wx.ToolTip('Click the browse button!'))
        item1.SetEditable(False)

# Adjust button attributes
    def ApplyBtnAttributes(self, item1, item2):
        item1.SetCursor(wx.StockCursor(wx.CURSOR_HAND))
        item1.SetToolTip(wx.ToolTip(item2))

# Button and other Events
    def OnBrowseOne(self, event):
        """ Open a file. """
        self.dlg = wx.FileDialog(self, 'Choose a file', '', '', '*.xml', wx.OPEN)
        if self.dlg.ShowModal () == wx.ID_OK:
            self.filename = self.dlg.GetFilename()
            self.dirname = self.dlg.GetDirectory()
            self.inputTxtOne.SetValue('%s\\%s' % (self.dirname, self.filename))
        self.dlg.Destroy()

    def OnBrowseTwo(self, event):
        """ Open a file. """
        self.dlg = wx.FileDialog(self, 'Choose a file', '', '', '*.xml', wx.OPEN)
        if self.dlg.ShowModal () == wx.ID_OK:
            self.filename = self.dlg.GetFilename()
            self.dirname = self.dlg.GetDirectory()
            self.inputTxtTwo.SetValue('%s\\%s' % (self.dirname, self.filename))
        self.dlg.Destroy()

    def OnBrowseThree(self, event):
        """ Open a file. """
        self.dlg = wx.FileDialog(self, 'Choose a file', '', '', '*control*.xml', wx.OPEN)
        if self.dlg.ShowModal () == wx.ID_OK:
            self.filename = self.dlg.GetFilename()
            self.dirname = self.dlg.GetDirectory()
            self.inputTxtThree.SetValue('%s\\%s' % (self.dirname, self.filename))
        self.dlg.Destroy()

    def OnClearInv(self, event):
        """ Clear Inventory Field. """
        self.inputTxtOne.SetValue('Click Browse...')

    def OnClearSales(self, event):
        """ Clear Sales Field. """
        self.inputTxtTwo.SetValue('Click Browse...')

    def OnClearMeta(self, event):
        """ Clear Meta Data Field. """

    def OnClearAll(self, event):
        self.inputTxtOne.SetValue('Click Browse...')
        self.inputTxtTwo.SetValue('Click Browse...')
        self.inputTxtThree.SetValue('Click Browse...')

    def OnRun(self, event):
        EW.clearVariables()
        cdlg.showInfoDlg('Processing will begin when you click OK.\nPlease wait while the data is processed.', 'Information')
        if self.inputTxtOne.GetValue() != 'Click Browse...' and self.inputTxtTwo.GetValue() != 'Click Browse...' and self.inputTxtThree.GetValue() != 'Click Browse...':
            EW.parseOne(self.inputTxtOne.GetValue())
            EW.parseTwo(self.inputTxtTwo.GetValue())
            EW.parseThree(self.inputTxtThree.GetValue())
            EW.prepareOutput()
            EW.finalizeOutput()
            pTwo.invOutput = EW.dataVars.invOutput
            pThree.salesOutput = EW.dataVars.salesOutput

        else:
            cdlg.showErrorDlg('Error loading one of the files. \n Please ensure you have filled in all three file selections.', 'Error')

#----------------------------------------------------------------------
if __name__ == '__main__':
    print('File file is not meant to be run as a stand alone application.')
    print('  Please try again by running the main program.')