Chimie Théorique » QMX

"""pybutton.py - a button for displaying Python code.

This module defines two classes, together they implement a button that

a module can use to display Python.

PyButton

--------

PyButton is a gkt.Button with the label 'Python'.  When pressed, it

opens a PyWindow displaying some Python code, or an error message if

no Python code is ready.

The script is stored in the attribute .python, it is the

responsability of the owning object to keep this attribute up to date:

when pressing the Apply button would result in a sensible

configuration being created, the python attribute must be set to a

string creating this code.  When pressing Apply would cause an error,

the python attribute must be set to None.

PyWindow

--------

Displays the Python code.  This object is created by the PyButton

object when needed.

"""

import gtk

import time

from ase.gui.widgets import oops, pack

class PyButton(gtk.Button):

    "A button for displaying Python code."

    def __init__(self, title):

        gtk.Button.__init__(self, "Python")

        self.title = title

        self.python = None

        self.connect_after('clicked', self.run)

    def run(self, *args):

        "The method called when the button is click."

        if self.python:

            now = time.ctime()

            win = PyWindow(self.title, now, self.python)

        else:

            oops("No Python code",

                 "You have not (yet) specified a consistent set of parameters.")

fr1_template = """

Title: %s

Time: %s

"""

class PyWindow(gtk.Window):

    "A window displaying Python code."

    def __init__(self, title, time, code):

        gtk.Window.__init__(self)

        self.set_title("ag: Python code")

        vbox = gtk.VBox()

        lbl = gtk.Label(fr1_template % (title, time))

        lbl.set_alignment(0.0, 0.5)

        fr = gtk.Frame("Information:")

        fr.add(lbl)

        pack(vbox, fr)

        txtbuf = gtk.TextBuffer()

        txtbuf.set_text(code)

        txtview = gtk.TextView(txtbuf)

        txtview.set_editable(False)

        fr = gtk.Frame("Python code:")

        fr.add(txtview)

        fr.set_label_align(0.0, 0.5)

        pack(vbox, fr)

        but =  gtk.Button(stock=gtk.STOCK_OK)

        but.connect('clicked', lambda x: self.destroy())

        pack(vbox, [but], end=True, bottom=True)

        self.add(vbox)

        self.show_all()