def __init__(self, statusbar, prefs):
self._statusbar = statusbar
self._old_processes = {}
self.process_mgr = ProcessManager(self.do_update,
prefs.bin_dir, prefs.use_sudo, prefs.use_ssh, prefs.hostname)
self.model = gtk.ListStore(gobject.TYPE_INT, # 0 pid
gobject.TYPE_STRING) # 1 status
gtk.TreeView.__init__(self, self.model)
self.connect('button-press-event', self.click)
self.connect('popup-menu', self.popupMenu)
renderer = gtk.CellRendererText()
for index, title in enumerate(["PID", "Status"]):
column = gtk.TreeViewColumn(title, renderer, text=index)
column.set_reorderable(True)
column.set_resizable(True)
column.set_sort_column_id(index)
self.append_column(column)
self.get_column(0).clicked() # sort by pid
self.get_selection().set_mode(gtk.SELECTION_MULTIPLE)
self.set_headers_clickable(True)
prefs.subscribe(self.apply_prefs)
self.timer = Timer(prefs.process_interval, self.update)
class ProcessWidget(gtk.TreeView):
"""A widget that displays a list of processes."""
def __init__(self, statusbar, prefs):
self._statusbar = statusbar
self._old_processes = {}
self.process_mgr = ProcessManager(self.do_update,
prefs.bin_dir, prefs.use_sudo, prefs.use_ssh, prefs.hostname)
self.model = gtk.ListStore(gobject.TYPE_INT, # 0 pid
gobject.TYPE_STRING) # 1 status
gtk.TreeView.__init__(self, self.model)
self.connect('button-press-event', self.click)
self.connect('popup-menu', self.popupMenu)
renderer = gtk.CellRendererText()
for index, title in enumerate(["PID", "Status"]):
column = gtk.TreeViewColumn(title, renderer, text=index)
column.set_reorderable(True)
column.set_resizable(True)
column.set_sort_column_id(index)
self.append_column(column)
self.get_column(0).clicked() # sort by pid
self.get_selection().set_mode(gtk.SELECTION_MULTIPLE)
self.set_headers_clickable(True)
prefs.subscribe(self.apply_prefs)
self.timer = Timer(prefs.process_interval, self.update)
def update(self, new_status="Running exiwhat..."):
"""Schedule an immediate update of process status."""
self._statusbar.pop(0)
self._statusbar.push(0, new_status)
self.process_mgr.schedule_update()
def do_update(self, processes, info):
"""Update the process list.
Called from a background thread.
"""
gtk.gdk.threads_enter()
try:
old_processes = self._old_processes
# remove outdated entries
iter = self.model.get_iter_first()
while iter is not None:
next = self.model.iter_next(iter)
pid = self.model.get_value(iter, 0)
if (pid not in processes or
old_processes[pid] != processes[pid]):
self.model.remove(iter)
iter = next
# add new and changed entries to list
for pid, status in processes.iteritems():
if pid not in old_processes or old_processes[pid] != status:
self.model.append((pid, status))
self._old_processes = processes
self._statusbar.pop(0)
self._statusbar.push(0, info)
finally:
gtk.gdk.threads_leave()
def click(self, widget, event):
"""Handle a click in the process widget."""
if event.type == gtk.gdk.BUTTON_PRESS and event.button == 3:
self.popupMenu(widget, event.button)
return True # handled
else:
return False # not handled
def popupMenu(self, widget, button=0):
"""Pop up the context menu."""
menu = ProcessContextMenu(self.get_selection(), self)
menu.show_all()
menu.popup(None, None, None, button, gtk.get_current_event_time())
def cleanup(self):
"""Clean up when the widget is destroyed."""
self.process_mgr.stop()
def apply_prefs(self, prefs):
self.process_mgr.bin_dir = prefs.bin_dir
self.process_mgr.use_sudo = prefs.use_sudo
self.process_mgr.use_ssh = prefs.use_ssh
self.process_mgr.hostname = prefs.hostname
self.timer.set_paused(not prefs.show_process_list)
self.timer.update_interval(prefs.process_interval)
