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#! /usr/bin/python2.7
# 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()