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 Post subject: PyGTK button events
PostPosted: Sat Dec 10, 2011 2:32 am 
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Joined: Sat Dec 10, 2011 2:26 am
Posts: 2
I am trying to get a button click to set some text in an Entry. Below is my code.

Code:
#!/usr/bin/python

import sys
import os

importStatus = False
filenametf = None

try:
   import pygtk
   pygtk.require('2.0')
   import gtk
   importStatus = True

except ImportError:
    print "PyGTK module does not exist. Can't launch GUI !"
    print "Please download and install GTK and PyGTK."
    importStatus = False

if importStatus:

    class gtkGUI():

        output = None

        def __init__(self):
            print "Starting GTK Interface"
            self.startGUI()

        def startGUI(self):
            print "GUI Started"
            self.window = gtk.Window(gtk.WINDOW_TOPLEVEL)
            self.window.set_title("Shredder - v0.1 (Alpha)")
            self.window.set_border_width(10)
            self.window.connect("destroy", self.destroy)

            ## Labels
            self.filelbl = gtk.Label("File / Folder: ")
            self.iterationlbl = gtk.Label("Shred Iterations: ")
            self.zerolbl = gtk.Label("Zero-ing:")

            ## Buttons
            self.shredbtn = gtk.Button("Shred !")
            self.filechoosebtn = gtk.Button("...")
            self.trashbtn = gtk.Button("Trash")
            self.trashbtn.connect("clicked", self.get_trash_callback, None)

            ## Check Boxes
            self.zero = gtk.CheckButton(label=None)
            self.zero.set_active(True)

            ## Text Fields
            self.filenametf = gtk.Entry(max=0)
            self.itertf = gtk.Entry(max=0)
            self.itertf.set_width_chars(8)
            self.itertf.set_text("100")

            ## Text View with frame wrapping
            self.page_size = gtk.Adjustment(lower=100, page_size=100)
            self.sw = gtk.ScrolledWindow(self.page_size)
            self.sw.set_policy(gtk.POLICY_AUTOMATIC, gtk.POLICY_AUTOMATIC)
            self.output = gtk.TextView()
            self.output.set_wrap_mode(gtk.WRAP_WORD)
            self.output.set_editable(False)
            self.sw.add(self.output)
            self.frame = gtk.Frame()
            self.frame.set_label(" Status: ")
            self.frame.set_shadow_type(gtk.SHADOW_ETCHED_OUT)
            self.frame.add(self.sw)

            ## Tooltip Text

            # Shred button
            self.shredtooltip = gtk.Tooltips()
            self.shredtooltip.set_tip(self.shredbtn, "Begin Shredding Files")

            # File choose button
            self.filestooltip = gtk.Tooltips()
            self.filestooltip.set_tip(self.filechoosebtn, "Choose files or folder")

            # Trash button
            self.trashtooltip = gtk.Tooltips()
            self.trashtooltip.set_tip(self.trashbtn, "Shred Trash bin")

            ## Packing widgets into window

            # Vertical box to contain all boxes
            self.vbox = gtk.VBox(homogeneous=False, spacing=0)

            # filebox to contain file-based widgets
            self.filebox = gtk.HBox(homogeneous=False, spacing=0)
            self.filebox.pack_start(self.filelbl, expand=False, fill=False, padding=10)
            self.filebox.pack_start(self.filenametf, expand=False, fill=False, padding=0)
            self.filebox.pack_start(self.filechoosebtn, expand=False, fill=False, padding=10)
            self.filebox.pack_start(self.trashbtn, expand=False, fill=False, padding=0)
            self.vbox.pack_start(self.filebox, expand=False, fill=False, padding=0)

            # sctrlbox to contain shred control widgets
            self.sctrlbox = gtk.HBox(homogeneous=False, spacing=0)
            self.sctrlbox.pack_start(self.iterationlbl, expand=False, fill=False, padding=10)
            self.sctrlbox.pack_start(self.itertf, expand=False, fill=False, padding=0)
            self.sctrlbox.pack_start(self.zerolbl, expand=False, fill=False, padding=10)
            self.sctrlbox.pack_start(self.zero, expand=False, fill=False, padding=0)
            self.vbox.pack_start(self.sctrlbox, expand=False, fill=False, padding=5)

            # Add seperator
            self.separator = gtk.HSeparator()
            self.vbox.pack_start(self.separator, expand=False, fill=False, padding=5)           

            # Output View
            self.vbox.pack_start(self.frame, expand=True, fill=True, padding=5)

            # Shred button
            self.shredbox = gtk.HBox(homogeneous=False, spacing=0)
            self.shredbox.pack_end(self.shredbtn, expand=False, fill=False, padding=5)
            self.vbox.pack_end(self.shredbox, expand=False, fill=False, padding=5)


            ## Presenting window
            self.window.add(self.vbox)
            self.window.show_all()     
            self.insertText("helloworld")
            gtk.main()
            return None

        def checkGtkVersion(self):
            return gtk.gtk_version
       
        def checkPyGTKVersion(self):
            return gtk.pygtk_version

        def destroy(self, widget, data=None):
            return gtk.main_quit()

        def insertText(self, text):
            if(self.output == None):
                print "Empty Output"
            else:
                self.buffer = self.output.get_buffer()
                self.buffer.insert_at_cursor(text)

        def get_trash_callback(widget, event, data):
            loc = os.getenv("HOME")
            print loc + "/.local/share/Trash"
            filenametf.set_text(loc + "/.local/share/Trash")


I am trying to fix the get_trash_callback() event from the code above as that's the cause of my problem for now. When I run the above code and click on the "Trash" button, I get the following output on my console:

Code:
Traceback (most recent call last):
  File "....../gtkGUI.py", line 145, in get_trash_callback
    filenametf.set_text(loc + "/.local/share/Trash")
AttributeError: 'NoneType' object has no attribute 'set_text'


If the above codes I posted are too huge and hard to read, do inform me quickly so I could reduce it down as much as possible to the essentials hopefully without altering the problems.

I attempted to use "self.filenamtf" in the line 145 code but it gives me "NameError: global name 'self' is not defined" if I added a "self" in front of "filenametf" on line 145.

Thanks.


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