from __future__ import with_statement
+import os
+import errno
import sys
-import traceback
+import time
+import itertools
import functools
import contextlib
-import warnings
+import logging
+import threading
+import Queue
import gobject
import gtk
+_moduleLogger = logging.getLogger(__name__)
+
+
+def get_screen_orientation():
+ width, height = gtk.gdk.get_default_root_window().get_size()
+ if width < height:
+ return gtk.ORIENTATION_VERTICAL
+ else:
+ return gtk.ORIENTATION_HORIZONTAL
+
+
+def orientation_change_connect(handler, *args):
+ """
+ @param handler(orientation, *args) -> None(?)
+ """
+ initialScreenOrientation = get_screen_orientation()
+ orientationAndArgs = list(itertools.chain((initialScreenOrientation, ), args))
+
+ def _on_screen_size_changed(screen):
+ newScreenOrientation = get_screen_orientation()
+ if newScreenOrientation != orientationAndArgs[0]:
+ orientationAndArgs[0] = newScreenOrientation
+ handler(*orientationAndArgs)
+
+ rootScreen = gtk.gdk.get_default_root_window()
+ return gtk.connect(rootScreen, "size-changed", _on_screen_size_changed)
+
+
+@contextlib.contextmanager
+def flock(path, timeout=-1):
+ WAIT_FOREVER = -1
+ DELAY = 0.1
+ timeSpent = 0
+
+ acquired = False
+
+ while timeSpent <= timeout or timeout == WAIT_FOREVER:
+ try:
+ fd = os.open(path, os.O_CREAT | os.O_EXCL | os.O_RDWR)
+ acquired = True
+ break
+ except OSError, e:
+ if e.errno != errno.EEXIST:
+ raise
+ time.sleep(DELAY)
+ timeSpent += DELAY
+
+ assert acquired, "Failed to grab file-lock %s within timeout %d" % (path, timeout)
+
+ try:
+ yield fd
+ finally:
+ os.unlink(path)
+
+
@contextlib.contextmanager
def gtk_lock():
gtk.gdk.threads_enter()
return immediate_func
+def autostart(func):
+ """
+ >>> @autostart
+ ... def grep_sink(pattern):
+ ... print "Looking for %s" % pattern
+ ... while True:
+ ... line = yield
+ ... if pattern in line:
+ ... print line,
+ >>> g = grep_sink("python")
+ Looking for python
+ >>> g.send("Yeah but no but yeah but no")
+ >>> g.send("A series of tubes")
+ >>> g.send("python generators rock!")
+ python generators rock!
+ >>> g.close()
+ """
+
+ @functools.wraps(func)
+ def start(*args, **kwargs):
+ cr = func(*args, **kwargs)
+ cr.next()
+ return cr
+
+ return start
+
+
+@autostart
+def printer_sink(format = "%s"):
+ """
+ >>> pr = printer_sink("%r")
+ >>> pr.send("Hello")
+ 'Hello'
+ >>> pr.send("5")
+ '5'
+ >>> pr.send(5)
+ 5
+ >>> p = printer_sink()
+ >>> p.send("Hello")
+ Hello
+ >>> p.send("World")
+ World
+ >>> # p.throw(RuntimeError, "Goodbye")
+ >>> # p.send("Meh")
+ >>> # p.close()
+ """
+ while True:
+ item = yield
+ print format % (item, )
+
+
+@autostart
+def null_sink():
+ """
+ Good for uses like with cochain to pick up any slack
+ """
+ while True:
+ item = yield
+
+
+@autostart
+def comap(function, target):
+ """
+ >>> p = printer_sink()
+ >>> cm = comap(lambda x: x+1, p)
+ >>> cm.send((0, ))
+ 1
+ >>> cm.send((1.0, ))
+ 2.0
+ >>> cm.send((-2, ))
+ -1
+ """
+ while True:
+ try:
+ item = yield
+ mappedItem = function(*item)
+ target.send(mappedItem)
+ except Exception, e:
+ _moduleLogger.exception("Forwarding exception!")
+ target.throw(e.__class__, str(e))
+
+
+def _flush_queue(queue):
+ while not queue.empty():
+ yield queue.get()
+
+
+@autostart
+def queue_sink(queue):
+ """
+ >>> q = Queue.Queue()
+ >>> qs = queue_sink(q)
+ >>> qs.send("Hello")
+ >>> qs.send("World")
+ >>> qs.throw(RuntimeError, "Goodbye")
+ >>> qs.send("Meh")
+ >>> qs.close()
+ >>> print [i for i in _flush_queue(q)]
+ [(None, 'Hello'), (None, 'World'), (<type 'exceptions.RuntimeError'>, 'Goodbye'), (None, 'Meh'), (<type 'exceptions.GeneratorExit'>, None)]
+ """
+ while True:
+ try:
+ item = yield
+ queue.put((None, item))
+ except Exception, e:
+ queue.put((e.__class__, str(e)))
+ except GeneratorExit:
+ queue.put((GeneratorExit, None))
+ raise
+
+
+def decode_item(item, target):
+ if item[0] is None:
+ target.send(item[1])
+ return False
+ elif item[0] is GeneratorExit:
+ target.close()
+ return True
+ else:
+ target.throw(item[0], item[1])
+ return False
+
+
+def nonqueue_source(queue, target):
+ isDone = False
+ while not isDone:
+ item = queue.get()
+ isDone = decode_item(item, target)
+ while not queue.empty():
+ queue.get_nowait()
+
+
+def threaded_stage(target, thread_factory = threading.Thread):
+ messages = Queue.Queue()
+
+ run_source = functools.partial(nonqueue_source, messages, target)
+ thread = thread_factory(target=run_source)
+ thread.setDaemon(True)
+ thread.start()
+
+ # Sink running in current thread
+ return queue_sink(messages)
+
+
+def log_exception(logger):
+
+ def log_exception_decorator(func):
+
+ @functools.wraps(func)
+ def wrapper(*args, **kwds):
+ try:
+ return func(*args, **kwds)
+ except Exception:
+ logger.exception(func.__name__)
+
+ return wrapper
+
+ return log_exception_decorator
+
+
+class LoginWindow(object):
+
+ def __init__(self, widgetTree):
+ """
+ @note Thread agnostic
+ """
+ self._dialog = widgetTree.get_widget("loginDialog")
+ self._parentWindow = widgetTree.get_widget("mainWindow")
+ self._serviceCombo = widgetTree.get_widget("serviceCombo")
+ self._usernameEntry = widgetTree.get_widget("usernameentry")
+ self._passwordEntry = widgetTree.get_widget("passwordentry")
+
+ self._serviceList = gtk.ListStore(gobject.TYPE_INT, gobject.TYPE_STRING)
+ self._serviceCombo.set_model(self._serviceList)
+ cell = gtk.CellRendererText()
+ self._serviceCombo.pack_start(cell, True)
+ self._serviceCombo.add_attribute(cell, 'text', 1)
+ self._serviceCombo.set_active(0)
+
+ widgetTree.get_widget("loginbutton").connect("clicked", self._on_loginbutton_clicked)
+ widgetTree.get_widget("logins_close_button").connect("clicked", self._on_loginclose_clicked)
+
+ def request_credentials(self,
+ parentWindow = None,
+ defaultCredentials = ("", "")
+ ):
+ """
+ @note UI Thread
+ """
+ if parentWindow is None:
+ parentWindow = self._parentWindow
+
+ self._serviceCombo.hide()
+ self._serviceList.clear()
+
+ self._usernameEntry.set_text(defaultCredentials[0])
+ self._passwordEntry.set_text(defaultCredentials[1])
+
+ try:
+ self._dialog.set_transient_for(parentWindow)
+ self._dialog.set_default_response(gtk.RESPONSE_OK)
+ response = self._dialog.run()
+ if response != gtk.RESPONSE_OK:
+ raise RuntimeError("Login Cancelled")
+
+ username = self._usernameEntry.get_text()
+ password = self._passwordEntry.get_text()
+ self._passwordEntry.set_text("")
+ finally:
+ self._dialog.hide()
+
+ return username, password
+
+ def request_credentials_from(self,
+ services,
+ parentWindow = None,
+ defaultCredentials = ("", "")
+ ):
+ """
+ @note UI Thread
+ """
+ if parentWindow is None:
+ parentWindow = self._parentWindow
+
+ self._serviceList.clear()
+ for serviceIdserviceName in services:
+ self._serviceList.append(serviceIdserviceName)
+ self._serviceCombo.set_active(0)
+ self._serviceCombo.show()
+
+ self._usernameEntry.set_text(defaultCredentials[0])
+ self._passwordEntry.set_text(defaultCredentials[1])
+
+ try:
+ self._dialog.set_transient_for(parentWindow)
+ self._dialog.set_default_response(gtk.RESPONSE_OK)
+ response = self._dialog.run()
+ if response != gtk.RESPONSE_OK:
+ raise RuntimeError("Login Cancelled")
+
+ username = self._usernameEntry.get_text()
+ password = self._passwordEntry.get_text()
+ finally:
+ self._dialog.hide()
+
+ itr = self._serviceCombo.get_active_iter()
+ serviceId = int(self._serviceList.get_value(itr, 0))
+ self._serviceList.clear()
+ return serviceId, username, password
+
+ def _on_loginbutton_clicked(self, *args):
+ self._dialog.response(gtk.RESPONSE_OK)
+
+ def _on_loginclose_clicked(self, *args):
+ self._dialog.response(gtk.RESPONSE_CANCEL)
+
+
+def safecall(f, errorDisplay=None, default=None, exception=Exception):
+ '''
+ Returns modified f. When the modified f is called and throws an
+ exception, the default value is returned
+ '''
+ def _safecall(*args, **argv):
+ try:
+ return f(*args,**argv)
+ except exception, e:
+ if errorDisplay is not None:
+ errorDisplay.push_exception(e)
+ return default
+ return _safecall
+
+
class ErrorDisplay(object):
def __init__(self, widgetTree):
self.push_message(message)
def push_message(self, message):
- if 0 < len(self.__messages):
- self.__messages.append(message)
- else:
+ self.__messages.append(message)
+ if 1 == len(self.__messages):
self.__show_message(message)
- def push_exception_with_lock(self, exception = None):
+ def push_exception_with_lock(self):
with gtk_lock():
- self.push_exception(exception)
+ self.push_exception()
- def push_exception(self, exception = None):
- if exception is None:
- userMessage = str(sys.exc_value)
- warningMessage = str(traceback.format_exc())
- else:
- userMessage = str(exception)
- warningMessage = str(exception)
+ def push_exception(self):
+ userMessage = str(sys.exc_info()[1])
self.push_message(userMessage)
- warnings.warn(warningMessage, stacklevel=3)
+ _moduleLogger.exception(userMessage)
def pop_message(self):
- if 0 < len(self.__messages):
- self.__show_message(self.__messages[0])
- del self.__messages[0]
- else:
+ del self.__messages[0]
+ if 0 == len(self.__messages):
self.__hide_message()
+ else:
+ self.__errorDescription.set_text(self.__messages[0])
def _on_close(self, *args):
self.pop_message()
self.__show_message(message)
def push_exception(self, exception = None):
- if exception is None:
- warningMessage = traceback.format_exc()
- else:
- warningMessage = exception
- warnings.warn(warningMessage, stacklevel=3)
+ userMessage = str(sys.exc_value)
+ _moduleLogger.exception(userMessage)
def pop_message(self):
if 0 < len(self.__messages):
del self.__messages[0]
def __show_message(self, message):
- warnings.warn(message, stacklevel=2)
+ _moduleLogger.debug(message)
class MessageBox(gtk.MessageDialog):
try:
self._calendar.select_month(self._displayDate.month, self._displayDate.year)
self._calendar.select_day(self._displayDate.day)
- except StandardError, e:
- warnings.warn(e.message)
+ except Exception, e:
+ _moduleLogger.exception(e)
if __name__ == "__main__":
projects / quicknote / blobdiff