Py In My Eye: File: demopanels.py

# File: demopanels.py
# References:
#    http://hg.python.org/cpython/file/4e32c450f438/Lib/tkinter/simpledialog.py
#    http://docs.python.org/py3k/library/inspect.html#module-inspect
#
# Icons sourced from: 
#    http://findicons.com/icon/69404/deletered?width=16#
#    http://findicons.com/icon/93110/old_edit_find?width=16#

# This file is imported by the Tkinter Demos

from tkinter import *
from tkinter import ttk
from tkinter.simpledialog import Dialog
from PIL import Image, ImageTk
import inspect

class MsgPanel(ttk.Frame):
    def __init__(self, master, msgtxt):
        ttk.Frame.__init__(self, master)
        self.pack(side=TOP, fill=X)
        
        msg = Label(self, wraplength='4i', justify=LEFT)
        msg['text'] = ''.join(msgtxt)
        msg.pack(fill=X, padx=5, pady=5)
        
class SeeDismissPanel(ttk.Frame):
    def __init__(self, master):
        ttk.Frame.__init__(self, master) 
        self.pack(side=BOTTOM, fill=X)          # resize with parent
        
        # separator widget
        sep = ttk.Separator(orient=HORIZONTAL)

        # Dismiss button
        im = Image.open('images//delete.png')   # image file
        imh = ImageTk.PhotoImage(im)            # handle to file
        dismissBtn = ttk.Button(text='Dismiss', image=imh, command=self.winfo_toplevel().destroy)
        dismissBtn.image = imh                  # prevent image from being garbage collected
        dismissBtn['compound'] = LEFT           # display image to left of label text
        
        # 'See Code' button
        im = Image.open('images//view.png')
        imh = ImageTk.PhotoImage(im)
        codeBtn = ttk.Button(text='See Code', image=imh, default=ACTIVE, command=lambda: CodeDialog(self.master))
        codeBtn.image = imh
        codeBtn['compound'] = LEFT
        codeBtn.focus()
                
        # position and register widgets as children of this frame
        sep.grid(in_=self, row=0, columnspan=4, sticky=EW, pady=5)
        codeBtn.grid(in_=self, row=1, column=0, sticky=E)
        dismissBtn.grid(in_=self, row=1, column=1, sticky=E)
        
        # set resize constraints
        self.rowconfigure(0, weight=1)
        self.columnconfigure(0, weight=1)

        # bind <Return> to demo window, activates 'See Code' button; 
        # <'Escape'> activates 'Dismiss' button
        self.winfo_toplevel().bind('<Return>', lambda x: codeBtn.invoke() )
        self.winfo_toplevel().bind('<Escape>', lambda x: dismissBtn.invoke() )

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File: demopanels.py