#! /usr/bin/env python

# Tkinter interface to Linux `kill' command.

from Tkinter import *

from string import splitfields

from string import split

import commands

import os

class BarButton(Menubutton):

    def __init__(self, master=None, **cnf):

        apply(Menubutton.__init__, (self, master), cnf)

        self.pack(side=LEFT)

        self.menu = Menu(self, name='menu')

        self['menu'] = self.menu

class Kill(Frame):

    # List of (name, option, pid_column)

    format_list = [('Default', '', 0),

                   ('Long', '-l', 2),

                   ('User', '-u', 1),

                   ('Jobs', '-j', 1),

                   ('Signal', '-s', 1),

                   ('Memory', '-m', 0),

                   ('VM', '-v', 0),

                   ('Hex', '-X', 0)]

    def kill(self, selected):

        c = self.format_list[self.format.get()][2]

        pid = split(selected)[c]

        os.system('kill -9 ' + pid)

        self.do_update()

    def do_update(self):

        name, option, column = self.format_list[self.format.get()]

        s = commands.getoutput('ps -w ' + option)

        list = splitfields(s, '\n')

        self.header.set(list[0])

        del list[0]

        y = self.frame.vscroll.get()[0]

        self.frame.list.delete(0, AtEnd())

        for line in list:

            self.frame.list.insert(0, line)

        self.frame.list.yview(int(y))

    def do_motion(self, e):

        e.widget.select_clear(0, END)

        e.widget.select_set(e.widget.nearest(e.y))

    def do_leave(self, e):

        e.widget.select_clear(0, END)

    def do_1(self, e):

        self.kill(e.widget.get(e.widget.nearest(e.y)))

    def __init__(self, master=None, **cnf):

        Frame.__init__(self, master, cnf)

        self.pack(expand=1, fill=BOTH)

        self.bar = Frame(self, name='bar', relief=RAISED,

                         borderwidth=2)

        self.bar.pack(fill=X)

        self.bar.file = BarButton(self.bar, text='File')

        self.bar.file.menu.add_command(

                label='Quit', command=self.quit)

        self.bar.view = BarButton(self.bar, text='View')

        self.format = IntVar(self)

        self.format.set(2)

        for num in range(len(self.format_list)):

            self.bar.view.menu.add_radiobutton(

                    label=self.format_list[num][0],

                    command=self.do_update,

                    variable=self.format,

                    value=num)

        #self.bar.view.menu.add_separator()

        #XXX ...

        self.bar.tk_menuBar(self.bar.file, self.bar.view)

        self.frame = Frame(self, relief=RAISED, borderwidth=2)

        self.frame.pack(expand=1, fill=BOTH)

        self.header = StringVar(self)

        self.frame.label = Label(self.frame, relief=FLAT, anchor=NW,

                                 borderwidth=0,

                                 textvariable=self.header)

        self.frame.label.pack(fill=X)

        self.frame.vscroll = Scrollbar(self.frame, orient=VERTICAL)

        self.frame.list = Listbox(self.frame, relief=SUNKEN,

                                  selectbackground='#eed5b7',

                                  selectborderwidth=0,

                                  yscroll=self.frame.vscroll.set)

        self.frame.vscroll['command'] = self.frame.list.yview

        self.frame.vscroll.pack(side=RIGHT, fill=Y)

        self.frame.list.pack(expand=1, fill=BOTH)

        self.update = Button(self, text="Update",

                             command=self.do_update)

        self.update.pack(expand=1, fill=X)

        self.frame.list.bind('<Motion>', self.do_motion)

        self.frame.list.bind('<Leave>', self.do_leave)

        self.frame.list.bind('<1>', self.do_1)

        self.do_update()

if __name__ == '__main__':

    kill = Kill(None, borderwidth=5)

    kill.winfo_toplevel().title('Tkinter Process Killer')

    kill.winfo_toplevel().minsize(1, 1)

    kill.mainloop()