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1.1.42
by Till Kamppeter
Import upstream version 1.1.2+git20090125 |
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#!/usr/bin/env python
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## Copyright (C) 2008 Red Hat, Inc.
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## Copyright (C) 2008 Tim Waugh <twaugh@redhat.com>
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## This program is free software; you can redistribute it and/or modify
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## it under the terms of the GNU General Public License as published by
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## the Free Software Foundation; either version 2 of the License, or
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## (at your option) any later version.
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## This program is distributed in the hope that it will be useful,
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## but WITHOUT ANY WARRANTY; without even the implied warranty of
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## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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## GNU General Public License for more details.
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## You should have received a copy of the GNU General Public License
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## along with this program; if not, write to the Free Software
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## Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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import gobject |
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import gtk |
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import subprocess |
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import threading |
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from gettext import gettext as _ |
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from debug import * |
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class OperationCanceled(RuntimeError): |
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pass
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class Timed: |
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def run (self): |
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pass
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def cancel (self): |
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pass
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class TimedSubprocess(Timed): |
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def __init__ (self, timeout=60000, parent=None, show_dialog=True, |
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**args): |
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self.subp = subprocess.Popen (**args) |
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self.output = dict() |
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self.io_source = [] |
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self.watchers = 2 |
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self.timeout = timeout |
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self.parent = parent |
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self.show_dialog = show_dialog |
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for f in [self.subp.stdout, self.subp.stderr]: |
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source = gobject.io_add_watch (f, |
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gobject.IO_IN | |
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gobject.IO_HUP | |
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gobject.IO_ERR, |
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self.watcher) |
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self.io_source.append (source) |
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self.wait_window = None |
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def run (self): |
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if self.show_dialog: |
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self.wait_source = gobject.timeout_add (1000, |
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self.show_wait_window) |
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self.timeout_source = gobject.timeout_add (self.timeout, |
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self.do_timeout) |
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gtk.main () |
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gobject.source_remove (self.timeout_source) |
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if self.show_dialog: |
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gobject.source_remove (self.wait_source) |
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for source in self.io_source: |
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gobject.source_remove (source) |
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if self.wait_window != None: |
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self.wait_window.destroy () |
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return (self.output.get (self.subp.stdout, '').split ('\n'), |
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self.output.get (self.subp.stderr, '').split ('\n'), |
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self.subp.poll ()) |
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def do_timeout (self): |
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gtk.main_quit () |
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return False |
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def watcher (self, source, condition): |
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if condition & gobject.IO_IN: |
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buffer = self.output.get (source, '') |
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buffer += source.read () |
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self.output[source] = buffer |
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if condition & gobject.IO_HUP: |
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self.watchers -= 1 |
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if self.watchers == 0: |
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gtk.main_quit () |
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return False |
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return True |
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def show_wait_window (self): |
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wait = gtk.MessageDialog (self.parent, |
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gtk.DIALOG_MODAL | |
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gtk.DIALOG_DESTROY_WITH_PARENT, |
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gtk.MESSAGE_INFO, |
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gtk.BUTTONS_CANCEL, |
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_("Please wait")) |
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wait.connect ("delete_event", lambda *args: False) |
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wait.connect ("response", self.wait_window_response) |
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if self.parent: |
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wait.set_transient_for (self.parent) |
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wait.set_position (gtk.WIN_POS_CENTER_ON_PARENT) |
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wait.format_secondary_text (_("Gathering information")) |
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wait.show_all () |
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self.wait_window = wait |
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return False |
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def wait_window_response (self, dialog, response): |
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if response == gtk.RESPONSE_CANCEL: |
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self.cancel () |
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def cancel (self): |
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if self.watchers > 0: |
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debugprint ("Command canceled") |
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gtk.main_quit () |
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self.watchers = 0 |
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class OperationThread(threading.Thread): |
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def __init__ (self, target=None, args=(), kwargs={}): |
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threading.Thread.__init__ (self) |
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self.setDaemon (True) |
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self.target = target |
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self.args = args |
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self.kwargs = kwargs |
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self.exception = None |
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self.result = None |
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def run (self): |
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try: |
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debugprint ("Calling %s" % self.target) |
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self.result = self.target (*self.args, **self.kwargs) |
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debugprint ("Done") |
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except Exception, e: |
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debugprint ("Caught exception %s" % e) |
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self.exception = e |
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def collect_result (self): |
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if self.isAlive (): |
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# We've been canceled.
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raise OperationCanceled() |
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if self.exception: |
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raise self.exception |
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return self.result |
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class TimedOperation(Timed): |
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def __init__ (self, target, args=(), kwargs={}, parent=None, |
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show_dialog=False): |
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self.wait_window = None |
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self.parent = parent |
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self.show_dialog = show_dialog |
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self.thread = OperationThread (target=target, |
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args=args, |
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kwargs=kwargs) |
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self.thread.start () |
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def run (self): |
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if self.show_dialog: |
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wait = gtk.MessageDialog (self.parent, |
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gtk.DIALOG_MODAL | |
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gtk.DIALOG_DESTROY_WITH_PARENT, |
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gtk.MESSAGE_INFO, |
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gtk.BUTTONS_CANCEL, |
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_("Please wait")) |
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wait.connect ("delete_event", lambda *args: False) |
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wait.connect ("response", self.wait_window_response) |
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if self.parent: |
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wait.set_transient_for (self.parent) |
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wait.set_position (gtk.WIN_POS_CENTER_ON_PARENT) |
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wait.format_secondary_text (_("Gathering information")) |
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wait.show_all () |
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self.timeout_source = gobject.timeout_add (50, self.check_thread) |
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gtk.main () |
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gobject.source_remove (self.timeout_source) |
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if self.show_dialog: |
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wait.destroy () |
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return self.thread.collect_result () |
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def check_thread (self): |
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if self.thread.isAlive (): |
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# Thread still running.
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return True |
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# Thread has finished. Stop the sub-loop.
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gtk.main_quit () |
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return False |
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def wait_window_response (self, dialog, response): |
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if response == gtk.RESPONSE_CANCEL: |
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self.cancel () |
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def cancel (self): |
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debugprint ("Command canceled") |
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gtk.main_quit () |