git.maemo.org Git - gc-dialer/blob - src/gtk_toolbox.py

   1 #!/usr/bin/python
   2
   3 from __future__ import with_statement
   4
   5 import os
   6 import errno
   7 import sys
   8 import time
   9 import traceback
  10 import functools
  11 import contextlib
  12 import warnings
  13 import threading
  14 import Queue
  15
  16 import gobject
  17 import gtk
  18
  19
  20 @contextlib.contextmanager
  21 def flock(path, timeout=-1):
  22         WAIT_FOREVER = -1
  23         DELAY = 0.1
  24         timeSpent = 0
  25
  26         acquired = False
  27
  28         while timeSpent <= timeout or timeout == WAIT_FOREVER:
  29                 try:
  30                         fd = os.open(path, os.O_CREAT | os.O_EXCL | os.O_RDWR)
  31                         acquired = True
  32                         break
  33                 except OSError, e:
  34                         if e.errno != errno.EEXIST:
  35                                 raise
  36                 time.sleep(DELAY)
  37                 timeSpent += DELAY
  38
  39         assert acquired, "Failed to grab file-lock %s within timeout %d" % (path, timeout)
  40
  41         try:
  42                 yield fd
  43         finally:
  44                 os.unlink(path)
  45
  46
  47 @contextlib.contextmanager
  48 def gtk_lock():
  49         gtk.gdk.threads_enter()
  50         try:
  51                 yield
  52         finally:
  53                 gtk.gdk.threads_leave()
  54
  55
  56 def find_parent_window(widget):
  57         while True:
  58                 parent = widget.get_parent()
  59                 if isinstance(parent, gtk.Window):
  60                         return parent
  61                 widget = parent
  62
  63
  64 def make_idler(func):
  65         """
  66         Decorator that makes a generator-function into a function that will continue execution on next call
  67         """
  68         a = []
  69
  70         @functools.wraps(func)
  71         def decorated_func(*args, **kwds):
  72                 if not a:
  73                         a.append(func(*args, **kwds))
  74                 try:
  75                         a[0].next()
  76                         return True
  77                 except StopIteration:
  78                         del a[:]
  79                         return False
  80
  81         return decorated_func
  82
  83
  84 def asynchronous_gtk_message(original_func):
  85         """
  86         @note Idea came from http://www.aclevername.com/articles/python-webgui/
  87         """
  88
  89         def execute(allArgs):
  90                 args, kwargs = allArgs
  91                 with gtk_lock():
  92                         original_func(*args, **kwargs)
  93                 return False
  94
  95         @functools.wraps(original_func)
  96         def delayed_func(*args, **kwargs):
  97                 gobject.idle_add(execute, (args, kwargs))
  98
  99         return delayed_func
 100
 101
 102 def synchronous_gtk_message(original_func):
 103         """
 104         @note Idea came from http://www.aclevername.com/articles/python-webgui/
 105         """
 106
 107         @functools.wraps(original_func)
 108         def immediate_func(*args, **kwargs):
 109                 with gtk_lock():
 110                         return original_func(*args, **kwargs)
 111
 112         return immediate_func
 113
 114
 115 def autostart(func):
 116         """
 117         >>> @autostart
 118         ... def grep_sink(pattern):
 119         ...     print "Looking for %s" % pattern
 120         ...     while True:
 121         ...             line = yield
 122         ...             if pattern in line:
 123         ...                     print line,
 124         >>> g = grep_sink("python")
 125         Looking for python
 126         >>> g.send("Yeah but no but yeah but no")
 127         >>> g.send("A series of tubes")
 128         >>> g.send("python generators rock!")
 129         python generators rock!
 130         >>> g.close()
 131         """
 132
 133         @functools.wraps(func)
 134         def start(*args, **kwargs):
 135                 cr = func(*args, **kwargs)
 136                 cr.next()
 137                 return cr
 138
 139         return start
 140
 141
 142 @autostart
 143 def printer_sink(format = "%s"):
 144         """
 145         >>> pr = printer_sink("%r")
 146         >>> pr.send("Hello")
 147         'Hello'
 148         >>> pr.send("5")
 149         '5'
 150         >>> pr.send(5)
 151         5
 152         >>> p = printer_sink()
 153         >>> p.send("Hello")
 154         Hello
 155         >>> p.send("World")
 156         World
 157         >>> # p.throw(RuntimeError, "Goodbye")
 158         >>> # p.send("Meh")
 159         >>> # p.close()
 160         """
 161         while True:
 162                 item = yield
 163                 print format % (item, )
 164
 165
 166 @autostart
 167 def null_sink():
 168         """
 169         Good for uses like with cochain to pick up any slack
 170         """
 171         while True:
 172                 item = yield
 173
 174
 175 @autostart
 176 def comap(function, target):
 177         """
 178         >>> p = printer_sink()
 179         >>> cm = comap(lambda x: x+1, p)
 180         >>> cm.send((0, ))
 181         1
 182         >>> cm.send((1.0, ))
 183         2.0
 184         >>> cm.send((-2, ))
 185         -1
 186         """
 187         while True:
 188                 try:
 189                         item = yield
 190                         mappedItem = function(*item)
 191                         target.send(mappedItem)
 192                 except StandardError, e:
 193                         target.throw(e.__class__, e.message)
 194
 195
 196 def _flush_queue(queue):
 197         while not queue.empty():
 198                 yield queue.get()
 199
 200
 201 @autostart
 202 def queue_sink(queue):
 203         """
 204         >>> q = Queue.Queue()
 205         >>> qs = queue_sink(q)
 206         >>> qs.send("Hello")
 207         >>> qs.send("World")
 208         >>> qs.throw(RuntimeError, "Goodbye")
 209         >>> qs.send("Meh")
 210         >>> qs.close()
 211         >>> print [i for i in _flush_queue(q)]
 212         [(None, 'Hello'), (None, 'World'), (<type 'exceptions.RuntimeError'>, 'Goodbye'), (None, 'Meh'), (<type 'exceptions.GeneratorExit'>, None)]
 213         """
 214         while True:
 215                 try:
 216                         item = yield
 217                         queue.put((None, item))
 218                 except StandardError, e:
 219                         queue.put((e.__class__, str(e)))
 220                 except GeneratorExit:
 221                         queue.put((GeneratorExit, None))
 222                         raise
 223
 224
 225 def decode_item(item, target):
 226         if item[0] is None:
 227                 target.send(item[1])
 228                 return False
 229         elif item[0] is GeneratorExit:
 230                 target.close()
 231                 return True
 232         else:
 233                 target.throw(item[0], item[1])
 234                 return False
 235
 236
 237 def nonqueue_source(queue, target):
 238         isDone = False
 239         while not isDone:
 240                 item = queue.get()
 241                 isDone = decode_item(item, target)
 242                 while not queue.empty():
 243                         queue.get_nowait()
 244
 245
 246 def threaded_stage(target, thread_factory = threading.Thread):
 247         messages = Queue.Queue()
 248
 249         run_source = functools.partial(nonqueue_source, messages, target)
 250         thread = thread_factory(target=run_source)
 251         thread.setDaemon(True)
 252         thread.start()
 253
 254         # Sink running in current thread
 255         return queue_sink(messages)
 256
 257
 258 class LoginWindow(object):
 259
 260         def __init__(self, widgetTree):
 261                 """
 262                 @note Thread agnostic
 263                 """
 264                 self._dialog = widgetTree.get_widget("loginDialog")
 265                 self._parentWindow = widgetTree.get_widget("mainWindow")
 266                 self._serviceCombo = widgetTree.get_widget("serviceCombo")
 267                 self._usernameEntry = widgetTree.get_widget("usernameentry")
 268                 self._passwordEntry = widgetTree.get_widget("passwordentry")
 269
 270                 self._serviceList = gtk.ListStore(gobject.TYPE_INT, gobject.TYPE_STRING)
 271                 self._serviceCombo.set_model(self._serviceList)
 272                 cell = gtk.CellRendererText()
 273                 self._serviceCombo.pack_start(cell, True)
 274                 self._serviceCombo.add_attribute(cell, 'text', 1)
 275                 self._serviceCombo.set_active(0)
 276
 277                 callbackMapping = {
 278                         "on_loginbutton_clicked": self._on_loginbutton_clicked,
 279                         "on_loginclose_clicked": self._on_loginclose_clicked,
 280                 }
 281                 widgetTree.signal_autoconnect(callbackMapping)
 282
 283         def request_credentials(self, parentWindow = None):
 284                 """
 285                 @note UI Thread
 286                 """
 287                 if parentWindow is None:
 288                         parentWindow = self._parentWindow
 289
 290                 self._serviceCombo.hide()
 291                 self._serviceList.clear()
 292
 293                 try:
 294                         self._dialog.set_transient_for(parentWindow)
 295                         self._dialog.set_default_response(gtk.RESPONSE_OK)
 296                         response = self._dialog.run()
 297                         if response != gtk.RESPONSE_OK:
 298                                 raise RuntimeError("Login Cancelled")
 299
 300                         username = self._usernameEntry.get_text()
 301                         password = self._passwordEntry.get_text()
 302                         self._passwordEntry.set_text("")
 303                 finally:
 304                         self._dialog.hide()
 305
 306                 return username, password
 307
 308         def request_credentials_from(self,
 309                 services,
 310                 parentWindow = None,
 311                 defaultCredentials = ("", "")
 312         ):
 313                 """
 314                 @note UI Thread
 315                 """
 316                 if parentWindow is None:
 317                         parentWindow = self._parentWindow
 318
 319                 self._serviceList.clear()
 320                 for serviceIdserviceName in services:
 321                         self._serviceList.append(serviceIdserviceName)
 322                 self._serviceCombo.set_active(0)
 323                 self._serviceCombo.show()
 324
 325                 self._usernameEntry.set_text(defaultCredentials[0])
 326                 self._passwordEntry.set_text(defaultCredentials[1])
 327
 328                 try:
 329                         self._dialog.set_transient_for(parentWindow)
 330                         self._dialog.set_default_response(gtk.RESPONSE_OK)
 331                         response = self._dialog.run()
 332                         if response != gtk.RESPONSE_OK:
 333                                 raise RuntimeError("Login Cancelled")
 334
 335                         username = self._usernameEntry.get_text()
 336                         password = self._passwordEntry.get_text()
 337                 finally:
 338                         self._dialog.hide()
 339
 340                 itr = self._serviceCombo.get_active_iter()
 341                 serviceId = int(self._serviceList.get_value(itr, 0))
 342                 self._serviceList.clear()
 343                 return serviceId, username, password
 344
 345         def _on_loginbutton_clicked(self, *args):
 346                 self._dialog.response(gtk.RESPONSE_OK)
 347
 348         def _on_loginclose_clicked(self, *args):
 349                 self._dialog.response(gtk.RESPONSE_CANCEL)
 350
 351
 352 def safecall(f, errorDisplay=None, default=None, exception=Exception):
 353         '''
 354         Returns modified f. When the modified f is called and throws an
 355         exception, the default value is returned
 356         '''
 357         def _safecall(*args, **argv):
 358                 try:
 359                         return f(*args,**argv)
 360                 except exception, e:
 361                         if errorDisplay is not None:
 362                                 errorDisplay.push_exception(e)
 363                         return default
 364         return _safecall
 365
 366
 367 class ErrorDisplay(object):
 368
 369         def __init__(self, widgetTree):
 370                 super(ErrorDisplay, self).__init__()
 371                 self.__errorBox = widgetTree.get_widget("errorEventBox")
 372                 self.__errorDescription = widgetTree.get_widget("errorDescription")
 373                 self.__errorClose = widgetTree.get_widget("errorClose")
 374                 self.__parentBox = self.__errorBox.get_parent()
 375
 376                 self.__errorBox.connect("button_release_event", self._on_close)
 377
 378                 self.__messages = []
 379                 self.__parentBox.remove(self.__errorBox)
 380
 381         def push_message_with_lock(self, message):
 382                 with gtk_lock():
 383                         self.push_message(message)
 384
 385         def push_message(self, message):
 386                 if 0 < len(self.__messages):
 387                         self.__messages.append(message)
 388                 else:
 389                         self.__show_message(message)
 390
 391         def push_exception_with_lock(self, exception = None, stacklevel=3):
 392                 with gtk_lock():
 393                         self.push_exception(exception, stacklevel=stacklevel)
 394
 395         def push_exception(self, exception = None, stacklevel=2):
 396                 if exception is None:
 397                         userMessage = str(sys.exc_value)
 398                         warningMessage = str(traceback.format_exc())
 399                 else:
 400                         userMessage = str(exception)
 401                         warningMessage = str(exception)
 402                 self.push_message(userMessage)
 403                 warnings.warn(warningMessage, stacklevel=stacklevel)
 404
 405         def pop_message(self):
 406                 if 0 < len(self.__messages):
 407                         self.__show_message(self.__messages[0])
 408                         del self.__messages[0]
 409                 else:
 410                         self.__hide_message()
 411
 412         def _on_close(self, *args):
 413                 self.pop_message()
 414
 415         def __show_message(self, message):
 416                 self.__errorDescription.set_text(message)
 417                 self.__parentBox.pack_start(self.__errorBox, False, False)
 418                 self.__parentBox.reorder_child(self.__errorBox, 1)
 419
 420         def __hide_message(self):
 421                 self.__errorDescription.set_text("")
 422                 self.__parentBox.remove(self.__errorBox)
 423
 424
 425 class DummyErrorDisplay(object):
 426
 427         def __init__(self):
 428                 super(DummyErrorDisplay, self).__init__()
 429
 430                 self.__messages = []
 431
 432         def push_message_with_lock(self, message):
 433                 self.push_message(message)
 434
 435         def push_message(self, message):
 436                 if 0 < len(self.__messages):
 437                         self.__messages.append(message)
 438                 else:
 439                         self.__show_message(message)
 440
 441         def push_exception(self, exception = None):
 442                 if exception is None:
 443                         warningMessage = traceback.format_exc()
 444                 else:
 445                         warningMessage = exception
 446                 warnings.warn(warningMessage, stacklevel=3)
 447
 448         def pop_message(self):
 449                 if 0 < len(self.__messages):
 450                         self.__show_message(self.__messages[0])
 451                         del self.__messages[0]
 452
 453         def __show_message(self, message):
 454                 warnings.warn(message, stacklevel=2)
 455
 456
 457 class MessageBox(gtk.MessageDialog):
 458
 459         def __init__(self, message):
 460                 parent = None
 461                 gtk.MessageDialog.__init__(
 462                         self,
 463                         parent,
 464                         gtk.DIALOG_MODAL|gtk.DIALOG_DESTROY_WITH_PARENT,
 465                         gtk.MESSAGE_ERROR,
 466                         gtk.BUTTONS_OK,
 467                         message,
 468                 )
 469                 self.set_default_response(gtk.RESPONSE_OK)
 470                 self.connect('response', self._handle_clicked)
 471
 472         def _handle_clicked(self, *args):
 473                 self.destroy()
 474
 475
 476 class MessageBox2(gtk.MessageDialog):
 477
 478         def __init__(self, message):
 479                 parent = None
 480                 gtk.MessageDialog.__init__(
 481                         self,
 482                         parent,
 483                         gtk.DIALOG_DESTROY_WITH_PARENT,
 484                         gtk.MESSAGE_ERROR,
 485                         gtk.BUTTONS_OK,
 486                         message,
 487                 )
 488                 self.set_default_response(gtk.RESPONSE_OK)
 489                 self.connect('response', self._handle_clicked)
 490
 491         def _handle_clicked(self, *args):
 492                 self.destroy()
 493
 494
 495 class PopupCalendar(object):
 496
 497         def __init__(self, parent, displayDate, title = ""):
 498                 self._displayDate = displayDate
 499
 500                 self._calendar = gtk.Calendar()
 501                 self._calendar.select_month(self._displayDate.month, self._displayDate.year)
 502                 self._calendar.select_day(self._displayDate.day)
 503                 self._calendar.set_display_options(
 504                         gtk.CALENDAR_SHOW_HEADING |
 505                         gtk.CALENDAR_SHOW_DAY_NAMES |
 506                         gtk.CALENDAR_NO_MONTH_CHANGE |
 507                         0
 508                 )
 509                 self._calendar.connect("day-selected", self._on_day_selected)
 510
 511                 self._popupWindow = gtk.Window()
 512                 self._popupWindow.set_title(title)
 513                 self._popupWindow.add(self._calendar)
 514                 self._popupWindow.set_transient_for(parent)
 515                 self._popupWindow.set_modal(True)
 516                 self._popupWindow.set_type_hint(gtk.gdk.WINDOW_TYPE_HINT_DIALOG)
 517                 self._popupWindow.set_skip_pager_hint(True)
 518                 self._popupWindow.set_skip_taskbar_hint(True)
 519
 520         def run(self):
 521                 self._popupWindow.show_all()
 522
 523         def _on_day_selected(self, *args):
 524                 try:
 525                         self._calendar.select_month(self._displayDate.month, self._displayDate.year)
 526                         self._calendar.select_day(self._displayDate.day)
 527                 except StandardError, e:
 528                         warnings.warn(e.message)
 529
 530
 531 class QuickAddView(object):
 532
 533         def __init__(self, widgetTree, errorDisplay, signalSink, prefix):
 534                 self._errorDisplay = errorDisplay
 535                 self._manager = None
 536                 self._signalSink = signalSink
 537
 538                 self._clipboard = gtk.clipboard_get()
 539
 540                 self._taskNameEntry = widgetTree.get_widget(prefix+"-nameEntry")
 541                 self._addTaskButton = widgetTree.get_widget(prefix+"-addButton")
 542                 self._pasteTaskNameButton = widgetTree.get_widget(prefix+"-pasteNameButton")
 543                 self._clearTaskNameButton = widgetTree.get_widget(prefix+"-clearNameButton")
 544                 self._onAddId = None
 545                 self._onAddClickedId = None
 546                 self._onAddReleasedId = None
 547                 self._addToEditTimerId = None
 548                 self._onClearId = None
 549                 self._onPasteId = None
 550
 551         def enable(self, manager):
 552                 self._manager = manager
 553
 554                 self._onAddId = self._addTaskButton.connect("clicked", self._on_add)
 555                 self._onAddClickedId = self._addTaskButton.connect("pressed", self._on_add_pressed)
 556                 self._onAddReleasedId = self._addTaskButton.connect("released", self._on_add_released)
 557                 self._onPasteId = self._pasteTaskNameButton.connect("clicked", self._on_paste)
 558                 self._onClearId = self._clearTaskNameButton.connect("clicked", self._on_clear)
 559
 560         def disable(self):
 561                 self._manager = None
 562
 563                 self._addTaskButton.disconnect(self._onAddId)
 564                 self._addTaskButton.disconnect(self._onAddClickedId)
 565                 self._addTaskButton.disconnect(self._onAddReleasedId)
 566                 self._pasteTaskNameButton.disconnect(self._onPasteId)
 567                 self._clearTaskNameButton.disconnect(self._onClearId)
 568
 569         def set_addability(self, addability):
 570                 self._addTaskButton.set_sensitive(addability)
 571
 572         def _on_add(self, *args):
 573                 try:
 574                         name = self._taskNameEntry.get_text()
 575                         self._taskNameEntry.set_text("")
 576
 577                         self._signalSink.stage.send(("add", name))
 578                 except StandardError, e:
 579                         self._errorDisplay.push_exception()
 580
 581         def _on_add_edit(self, *args):
 582                 try:
 583                         name = self._taskNameEntry.get_text()
 584                         self._taskNameEntry.set_text("")
 585
 586                         self._signalSink.stage.send(("add-edit", name))
 587                 except StandardError, e:
 588                         self._errorDisplay.push_exception()
 589
 590         def _on_add_pressed(self, widget):
 591                 try:
 592                         self._addToEditTimerId = gobject.timeout_add(1000, self._on_add_edit)
 593                 except StandardError, e:
 594                         self._errorDisplay.push_exception()
 595
 596         def _on_add_released(self, widget):
 597                 try:
 598                         if self._addToEditTimerId is not None:
 599                                 gobject.source_remove(self._addToEditTimerId)
 600                         self._addToEditTimerId = None
 601                 except StandardError, e:
 602                         self._errorDisplay.push_exception()
 603
 604         def _on_paste(self, *args):
 605                 try:
 606                         entry = self._taskNameEntry.get_text()
 607                         addedText = self._clipboard.wait_for_text()
 608                         if addedText:
 609                                 entry += addedText
 610                         self._taskNameEntry.set_text(entry)
 611                 except StandardError, e:
 612                         self._errorDisplay.push_exception()
 613
 614         def _on_clear(self, *args):
 615                 try:
 616                         self._taskNameEntry.set_text("")
 617                 except StandardError, e:
 618                         self._errorDisplay.push_exception()
 619
 620
 621 class TapOrHold(object):
 622
 623         def __init__(self, widget):
 624                 self._widget = widget
 625                 self._isTap = True
 626                 self._isPointerInside = True
 627                 self._holdTimeoutId = None
 628                 self._tapTimeoutId = None
 629                 self._taps = 0
 630
 631                 self._bpeId = None
 632                 self._breId = None
 633                 self._eneId = None
 634                 self._lneId = None
 635
 636         def enable(self):
 637                 self._bpeId = self._widget.connect("button-press-event", self._on_button_press)
 638                 self._breId = self._widget.connect("button-release-event", self._on_button_release)
 639                 self._eneId = self._widget.connect("enter-notify-event", self._on_enter)
 640                 self._lneId = self._widget.connect("leave-notify-event", self._on_leave)
 641
 642         def disable(self):
 643                 self._widget.disconnect(self._bpeId)
 644                 self._widget.disconnect(self._breId)
 645                 self._widget.disconnect(self._eneId)
 646                 self._widget.disconnect(self._lneId)
 647
 648         def on_tap(self, taps):
 649                 print "TAP", taps
 650
 651         def on_hold(self, taps):
 652                 print "HOLD", taps
 653
 654         def on_holding(self):
 655                 print "HOLDING"
 656
 657         def on_cancel(self):
 658                 print "CANCEL"
 659
 660         def _on_button_press(self, *args):
 661                 # Hack to handle weird notebook behavior
 662                 self._isPointerInside = True
 663                 self._isTap = True
 664
 665                 if self._tapTimeoutId is not None:
 666                         gobject.source_remove(self._tapTimeoutId)
 667                         self._tapTimeoutId = None
 668
 669                 # Handle double taps
 670                 if self._holdTimeoutId is None:
 671                         self._tapTimeoutId = None
 672
 673                         self._taps = 1
 674                         self._holdTimeoutId = gobject.timeout_add(1000, self._on_hold_timeout)
 675                 else:
 676                         self._taps = 2
 677
 678         def _on_button_release(self, *args):
 679                 assert self._tapTimeoutId is None
 680                 # Handle release after timeout if user hasn't double-clicked
 681                 self._tapTimeoutId = gobject.timeout_add(100, self._on_tap_timeout)
 682
 683         def _on_actual_press(self, *args):
 684                 if self._holdTimeoutId is not None:
 685                         gobject.source_remove(self._holdTimeoutId)
 686                 self._holdTimeoutId = None
 687
 688                 if self._isPointerInside:
 689                         if self._isTap:
 690                                 self.on_tap(self._taps)
 691                         else:
 692                                 self.on_hold(self._taps)
 693                 else:
 694                         self.on_cancel()
 695
 696         def _on_tap_timeout(self, *args):
 697                 self._tapTimeoutId = None
 698                 self._on_actual_press()
 699                 return False
 700
 701         def _on_hold_timeout(self, *args):
 702                 self._holdTimeoutId = None
 703                 self._isTap = False
 704                 self.on_holding()
 705                 return False
 706
 707         def _on_enter(self, *args):
 708                 self._isPointerInside = True
 709
 710         def _on_leave(self, *args):
 711                 self._isPointerInside = False
 712
 713
 714 if __name__ == "__main__":
 715         if False:
 716                 import datetime
 717                 cal = PopupCalendar(None, datetime.datetime.now())
 718                 cal._popupWindow.connect("destroy", lambda w: gtk.main_quit())
 719                 cal.run()
 720
 721         gtk.main()