Initial commit of OpenSPARC T2 architecture model.

[OpenSPARC-T2-SAM] / sam-t2 / devtools / amd64 / lib / python2.4 / site-packages / Pmw / Pmw_1_2 / demos / SubClassing.py

title = 'More examples of subclassing'

# Import Pmw from this directory tree.
import sys
sys.path[:0] = ['../../..']

import Tkinter
import Pmw

class ExtraMethods(Pmw.EntryField):

   # How to subclass a Pmw megawidget when you only want to add or
   # override methods.

   def doubletext(self):
       self.setvalue(self.getvalue() + ' ' + self.getvalue())

class OverrideInit(Pmw.EntryField):

   # How to subclass a Pmw megawidget when you want to define
   # a new __init__ method.

   def __init__(self, textToAdd, parent = None, **kw):
       self._textToAdd = textToAdd
       apply(Pmw.EntryField.__init__, (self, parent), kw)

   def addtext(self):
       self.setvalue(self.getvalue() + ' ' + self._textToAdd)

class DefaultOptions(Pmw.EntryField):

   # How to subclass a Pmw megawidget when you only want to set
   # existing options to new default values.

   def __init__(self, parent = None, **kw):
       kw['label_foreground'] = 'blue'
       kw['entry_background'] = 'white'
       apply(Pmw.EntryField.__init__, (self, parent), kw)

class NewOptions(Pmw.EntryField):

   # How to subclass a Pmw megawidget when you want to add new options.

   def __init__(self, parent=None , **kw):

       # Define the megawidget options.
       optiondefs = (
           ('backgrounds',              None,     self._backgrounds),
       )
       self.defineoptions(kw, optiondefs)

       # Initialise the base class (after defining the options).
       Pmw.EntryField.__init__(self, parent)

       # Check keywords and initialise options.
       self.initialiseoptions()

   def _backgrounds(self):
       background = self['backgrounds']
       Pmw.Color.changecolor(self.component('hull'), background)

class Demo:
   def __init__(self, parent):
       # Create and pack the megawidgets.
       self._extraMethod = ExtraMethods(parent,
               labelpos = 'w',
               label_text = 'Sub class with extra method:',
               value = 'Hello'
       )
       self._overrideInit = OverrideInit('Again', parent,
               labelpos = 'w',
               label_text = 'Sub class with new __init__ method:',
               value = 'Hello'
       )
       self._defaultOptions = DefaultOptions(parent,
               labelpos = 'w',
               label_text = 'Sub class with new default options:',
               value = 'Hello'
       )

       self._newOptions = NewOptions(parent,
               labelpos = 'w',
               label_text = 'Sub class with new option:',
               value = 'Hello',
               backgrounds = 'white',
       )

       entries = (self._extraMethod, self._overrideInit,
               self._defaultOptions, self._newOptions)

       for entry in entries:
           entry.pack(fill='x', expand=1, padx=10, pady=5)
       Pmw.alignlabels(entries)

       bb = Pmw.ButtonBox(parent)
       bb.add('Double text', command = self._doubleText)
       bb.pack()
       bb.add('Add text', command = self._addText)
       bb.pack()
       bb.add('White', command = self._changeColorWhite)
       bb.pack()
       bb.add('Green', command = self._changeColorGreen)
       bb.pack()

   def _doubleText(self):
       self._extraMethod.doubletext()

   def _addText(self):
       self._overrideInit.addtext()

   def _changeColorWhite(self):
       self._newOptions.configure(backgrounds = 'white')

   def _changeColorGreen(self):
       self._newOptions.configure(backgrounds = 'green')

######################################################################

# Create demo in root window for testing.
if __name__ == '__main__':
   root = Tkinter.Tk()
   Pmw.initialise(root)
   root.title(title)

   exitButton = Tkinter.Button(root, text = 'Exit', command = root.destroy)
   exitButton.pack(side = 'bottom')
   widget = Demo(root)
   root.mainloop()