#! /usr/bin/env python

# Tkinter interface to SYSV `ps' and `kill' commands.

from Tkinter import *

if TkVersion < 4.0:
	raise ImportError, "This version of svkill requires Tk 4.0 or later"

from string import splitfields
from string import split
import commands
import os

user = os.environ['LOGNAME']

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)
	view_list = [
		('Default', ''),
		('Every (-e)', '-e'),
		('Non process group leaders (-d)', '-d'),
		('Non leaders with tty (-a)', '-a'),
		('For this user (-u %s)' % user, '-u %s' % user),
		]
	format_list = [
		('Default', '', 0),
		('Long (-l)', '-l', 3),
		('Full (-f)', '-f', 1),
		('Full Long (-f -l)', '-l -f', 3),
		('Session and group ID (-j)', '-j', 0),
		('Scheduler properties (-c)', '-c', 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):
		format = self.format_list[self.format.get()][1]
		view = self.view_list[self.view.get()][1]
		s = commands.getoutput('ps %s %s' % (view, format))
		list = splitfields(s, '\n')
		self.header.set(list[0] + '          ')
		del list[0]
		self.frame.list.delete(0, AtEnd())
		for line in list:
			self.frame.list.insert(0, line)
	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):
		apply(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.bar.format = BarButton(self.bar, text='Format')
		self.view = IntVar(self)
		self.view.set(0)
		self.format = IntVar(self)
		self.format.set(0)
		for num in range(len(self.view_list)):
			label, option = self.view_list[num]
			self.bar.view.menu.add_radiobutton(
				label=label,
				command=self.do_update,
				variable=self.view,
				value=num)
		for num in range(len(self.format_list)):
			label, option, col = self.format_list[num]
			self.bar.format.menu.add_radiobutton(
				label=label,
				command=self.do_update,
				variable=self.format,
				value=num)
		self.bar.tk_menuBar(self.bar.file,
				    self.bar.view,
				    self.bar.format)
		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,
			font='*-Courier-Bold-R-Normal-*-120-*',
			textvariable=self.header)
		self.frame.label.pack(fill=Y, anchor=W)
		self.frame.vscroll = Scrollbar(self.frame, orient=VERTICAL)
		self.frame.list = Listbox(
			self.frame, 
			relief=SUNKEN,
			font='*-Courier-Medium-R-Normal-*-120-*',
			width=40, height=10,
			selectbackground='#eed5b7',
			selectborderwidth=0,
			selectmode=BROWSE,
			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(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 (SYSV)')
	kill.winfo_toplevel().minsize(1, 1)
	kill.mainloop()
