kill.py

reduced python source for embedded apps

#! /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()