bin/gla11y

   1 #!/usr/bin/env python
   2 # -*- tab-width: 4; indent-tabs-mode: nil; py-indent-offset: 4 -*-
   3 #
   4 # This file is part of the LibreOffice project.
   5 #
   6 # This Source Code Form is subject to the terms of the Mozilla Public
   7 # License, v. 2.0. If a copy of the MPL was not distributed with this
   8 # file, You can obtain one at http://mozilla.org/MPL/2.0/.
   9 #
  10 # This file incorporates work covered by the following license notice:
  11 #
  12 #   Copyright (c) 2018 Martin Pieuchot
  13 #   Copyright (c) 2018-2020 Samuel Thibault <sthibault@hypra.fr>
  14 #
  15 #   Permission to use, copy, modify, and distribute this software for any
  16 #   purpose with or without fee is hereby granted, provided that the above
  17 #   copyright notice and this permission notice appear in all copies.
  18 #
  19 #   THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  20 #   WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  21 #   MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  22 #   ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  23 #   WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  24 #   ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  25 #   OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  26
  27 # Take LibreOffice (glade) .ui files and check for non accessible widgets
  28
  29 from __future__ import print_function
  30
  31 import os
  32 import sys
  33 import getopt
  34 try:
  35     import lxml.etree as ET
  36     lxml = True
  37 except ImportError:
  38     if sys.version_info < (2,7):
  39         print("gla11y needs lxml or python >= 2.7")
  40         exit()
  41     import xml.etree.ElementTree as ET
  42     lxml = False
  43
  44 # Toplevel widgets
  45 widgets_toplevel = [
  46     'GtkWindow',
  47     'GtkOffscreenWindow',
  48     'GtkApplicationWindow',
  49     'GtkDialog',
  50     'GtkAboutDialog',
  51     'GtkFileChooserDialog',
  52     'GtkColorChooserDialog',
  53     'GtkFontChooserDialog',
  54     'GtkMessageDialog',
  55     'GtkRecentChooserDialog',
  56     'GtkAssistant',
  57     'GtkAppChooserDialog',
  58     'GtkPrintUnixDialog',
  59     'GtkShortcutsWindow',
  60 ]
  61
  62 widgets_ignored = widgets_toplevel + [
  63     # Containers
  64     'GtkBox',
  65     'GtkGrid',
  66     'GtkNotebook',
  67     'GtkFrame',
  68     'GtkAspectFrame',
  69     'GtkListBox',
  70     'GtkFlowBox',
  71     'GtkOverlay',
  72     'GtkMenuBar',
  73     'GtkToolbar',
  74     'GtkToolpalette',
  75     'GtkPaned',
  76     'GtkHPaned',
  77     'GtkVPaned',
  78     'GtkButtonBox',
  79     'GtkHButtonBox',
  80     'GtkVButtonBox',
  81     'GtkLayout',
  82     'GtkFixed',
  83     'GtkEventBox',
  84     'GtkExpander',
  85     'GtkViewport',
  86     'GtkScrolledWindow',
  87     'GtkAlignment',
  88     'GtkRevealer',
  89     'GtkSearchBar',
  90     'GtkHeaderBar',
  91     'GtkStack',
  92     'GtkStackSwticher',
  93     'GtkPopover',
  94     'GtkPopoverMenu',
  95     'GtkActionBar',
  96     'GtkHandleBox',
  97     'GtkShortcutsSection',
  98     'GtkShortcutsGroup',
  99     'GtkTable',
 100
 101     'GtkVBox',
 102     'GtkHBox',
 103     'GtkToolItem',
 104     'GtkMenu',
 105
 106     # Invisible actions
 107     'GtkSeparator',
 108     'GtkHSeparator',
 109     'GtkVSeparator',
 110     'GtkAction',
 111     'GtkToggleAction',
 112     'GtkActionGroup',
 113     'GtkCellRendererGraph',
 114     'GtkCellRendererPixbuf',
 115     'GtkCellRendererProgress',
 116     'GtkCellRendererSpin',
 117     'GtkCellRendererText',
 118     'GtkCellRendererToggle',
 119     'GtkSeparatorMenuItem',
 120     'GtkSeparatorToolItem',
 121
 122     # Storage objects
 123     'GtkListStore',
 124     'GtkTreeStore',
 125     'GtkTreeModelFilter',
 126     'GtkTreeModelSort',
 127
 128     'GtkEntryBuffer',
 129     'GtkTextBuffer',
 130     'GtkTextTag',
 131     'GtkTextTagTable',
 132
 133     'GtkSizeGroup',
 134     'GtkWindowGroup',
 135     'GtkAccelGroup',
 136     'GtkAdjustment',
 137     'GtkEntryCompletion',
 138     'GtkIconFactory',
 139     'GtkStatusIcon',
 140     'GtkFileFilter',
 141     'GtkRecentFilter',
 142     'GtkRecentManager',
 143     'GThemedIcon',
 144
 145     'GtkTreeSelection',
 146
 147     'GtkListBoxRow',
 148     'GtkTreeViewColumn',
 149
 150     # Useless to label
 151     'GtkScrollbar',
 152     'GtkHScrollbar',
 153     'GtkStatusbar',
 154     'GtkInfoBar',
 155
 156     # These are actually labels
 157     'GtkLinkButton',
 158
 159     # This precisely give a11y information :)
 160     'AtkObject',
 161 ]
 162
 163 widgets_suffixignored = [
 164 ]
 165
 166 # These widgets always need a label
 167 widgets_needlabel = [
 168     'GtkEntry',
 169     'GtkSearchEntry',
 170     'GtkScale',
 171     'GtkHScale',
 172     'GtkVScale',
 173     'GtkSpinButton',
 174     'GtkSwitch',
 175 ]
 176
 177 # These widgets normally have their own label
 178 widgets_buttons = [
 179     'GtkButton',
 180     'GtkToolButton',
 181     'GtkToggleButton',
 182     'GtkToggleToolButton',
 183     'GtkRadioButton',
 184     'GtkRadioToolButton',
 185     'GtkCheckButton',
 186     'GtkModelButton',
 187     'GtkLockButton',
 188     'GtkColorButton',
 189     'GtkMenuButton',
 190
 191     'GtkMenuItem',
 192     'GtkImageMenuItem',
 193     'GtkMenuToolButton',
 194     'GtkRadioMenuItem',
 195     'GtkCheckMenuItem',
 196 ]
 197
 198 # These widgets are labels that can label other widgets
 199 widgets_labels = [
 200     'GtkLabel',
 201     'GtkAccelLabel',
 202 ]
 203
 204 # The rest should probably be labelled if there are orphan labels
 205
 206 # GtkSpinner
 207 # GtkProgressBar
 208 # GtkLevelBar
 209
 210 # GtkComboBox
 211 # GtkComboBoxText
 212 # GtkFileChooserButton
 213 # GtkAppChooserButton
 214 # GtkFontButton
 215 # GtkCalendar
 216 # GtkColorChooserWidget
 217
 218 # GtkCellView
 219 # GtkTreeView
 220 # GtkTextView
 221 # GtkIconView
 222
 223 # GtkImage
 224 # GtkArrow
 225 # GtkDrawingArea
 226
 227 # GtkScaleButton
 228 # GtkVolumeButton
 229
 230
 231 # TODO:
 232 # GtkColorPlane ?
 233 # GtkColorScale ?
 234 # GtkColorSwatch ?
 235 # GtkFileChooserWidget ?
 236 # GtkFishbowl ?
 237 # GtkFontChooserWidget ?
 238 # GtkIcon ?
 239 # GtkInspector* ?
 240 # GtkMagnifier ?
 241 # GtkPathBar ?
 242 # GtkPlacesSidebar ?
 243 # GtkPlacesView ?
 244 # GtkPrinterOptionWidget ?
 245 # GtkStackCombo ?
 246 # GtkStackSidebar ?
 247 # GtkStackSwitcher ?
 248
 249 progname = os.path.basename(sys.argv[0])
 250
 251 suppressions = {}
 252 suppressions_to_line = {}
 253 false_positives = {}
 254 ids = {}
 255 ids_dup = {}
 256 labelled_by_elm = {}
 257 label_for_elm = {}
 258 mnemonic_for_elm = {}
 259
 260 gen_suppr = None
 261 gen_supprfile = None
 262 suppr_prefix = ""
 263 outfile = None
 264
 265 pflag = False
 266
 267 warn_orphan_labels = True
 268
 269 errors = 0
 270 errexists = 0
 271 warnings = 0
 272 warnexists = 0
 273 fatals = 0
 274 fatalexists = 0
 275
 276 enables = [ ]
 277 dofatals = [ ]
 278
 279 #
 280 # XML browsing and printing functions
 281 #
 282
 283 def elm_parent(root, elm):
 284     """
 285     Return the parent of the element.
 286     """
 287     if lxml:
 288         return elm.getparent()
 289     else:
 290         def find_parent(cur, elm):
 291             for o in cur:
 292                 if o == elm:
 293                     return cur
 294                 parent = find_parent(o, elm)
 295                 if parent is not None:
 296                     return parent
 297             return None
 298         return find_parent(root, elm)
 299
 300 def step_elm(elm):
 301     """
 302     Return the XML class path step corresponding to elm.
 303     This can be empty if the elm does not have any class or id.
 304     """
 305     step = elm.attrib.get('class')
 306     if step is None:
 307         step = ""
 308     oid = elm.attrib.get('id')
 309     if oid is not None:
 310         oid = oid.encode('ascii','ignore').decode('ascii')
 311         step += "[@id='%s']" % oid
 312     if len(step) > 0:
 313         step += '/'
 314     return step
 315
 316 def find_elm(root, elm):
 317     """
 318     Return the XML class path of the element from the given root.
 319     This is the slow version used when getparent is not available.
 320     """
 321     if root == elm:
 322         return ""
 323     for o in root:
 324         path = find_elm(o, elm)
 325         if path is not None:
 326             step = step_elm(o)
 327             return step + path
 328     return None
 329
 330 def errpath(filename, tree, elm):
 331     """
 332     Return the XML class path of the element
 333     """
 334     if elm is None:
 335         return ""
 336     path = ""
 337     if 'class' in elm.attrib:
 338         path += elm.attrib['class']
 339     oid = elm.attrib.get('id')
 340     if oid is not None:
 341         oid = oid.encode('ascii','ignore').decode('ascii')
 342         path = "//" + path + "[@id='%s']" % oid
 343     else:
 344         if lxml:
 345             elm = elm.getparent()
 346             while elm is not None:
 347                 step = step_elm(elm)
 348                 path = step + path
 349                 elm = elm.getparent()
 350         else:
 351             path = find_elm(tree.getroot(), elm)[:-1]
 352     path = filename + ':' + path
 353     return path
 354
 355 #
 356 # Warning/Error printing functions
 357 #
 358
 359 def elm_prefix(filename, elm):
 360     """
 361     Return the display prefix of the element
 362     """
 363     if elm == None or not lxml:
 364         return "%s:" % filename
 365     else:
 366         return "%s:%u" % (filename, elm.sourceline)
 367
 368 def elm_name(elm):
 369     """
 370     Return a display name of the element
 371     """
 372     if elm is not None:
 373         name = ""
 374         if 'class' in elm.attrib:
 375             name = "'%s' " % elm.attrib['class']
 376         if 'id' in elm.attrib:
 377             id = elm.attrib['id'].encode('ascii','ignore').decode('ascii')
 378             name += "'%s' " % id
 379         if not name:
 380             name = "'" + elm.tag + "'"
 381             if lxml:
 382                 name += " line " + str(elm.sourceline)
 383         return name
 384     return ""
 385
 386 def elm_name_line(elm):
 387     """
 388     Return a display name of the element with line number
 389     """
 390     if elm is not None:
 391         name = elm_name(elm)
 392         if lxml and " line " not in name:
 393             name += "line " + str(elm.sourceline) + " "
 394         return name
 395     return ""
 396
 397 def elm_line(elm):
 398     """
 399     Return the line for the given element.
 400     """
 401     if lxml:
 402         return " line " + str(elm.sourceline)
 403     else:
 404         return ""
 405
 406 def elms_lines(elms):
 407     """
 408     Return the list of lines for the given elements.
 409     """
 410     if lxml:
 411         return " lines " + ', '.join([str(l.sourceline) for l in elms])
 412     else:
 413         return ""
 414
 415 def elms_names_lines(elms):
 416     """
 417     Return the list of names and lines for the given elements.
 418     """
 419     return ', '.join([elm_name_line(elm) for elm in elms])
 420
 421 def elm_suppr(filename, tree, elm, msgtype, dogen):
 422     """
 423     Return the prefix to be displayed to the user and the suppression line for
 424     the warning type "msgtype" for element "elm"
 425     """
 426     global gen_suppr, gen_supprfile, suppr_prefix, pflag
 427
 428     if suppressions or false_positives or gen_suppr is not None or pflag:
 429         prefix = errpath(filename, tree, elm)
 430         if prefix[0:len(suppr_prefix)] == suppr_prefix:
 431             prefix = prefix[len(suppr_prefix):]
 432
 433     if suppressions or false_positives or gen_suppr is not None:
 434         suppr = '%s %s' % (prefix, msgtype)
 435
 436         if gen_suppr is not None and msgtype is not None and dogen:
 437             if gen_supprfile is None:
 438                 gen_supprfile = open(gen_suppr, 'w')
 439             print(suppr, file=gen_supprfile)
 440     else:
 441         suppr = None
 442
 443     if not pflag:
 444         # Use user-friendly line numbers
 445         prefix = elm_prefix(filename, elm)
 446         if prefix[0:len(suppr_prefix)] == suppr_prefix:
 447             prefix = prefix[len(suppr_prefix):]
 448
 449     return (prefix, suppr)
 450
 451 def is_enabled(elm, msgtype, l, default):
 452     """
 453     Test whether warning type msgtype is enabled for elm in l
 454     """
 455     enabled = default
 456     for (enable, thetype, klass) in l:
 457         # Match warning type
 458         if thetype is not None:
 459             if thetype != msgtype:
 460                 continue
 461         # Match elm class
 462         if klass is not None and elm is not None:
 463             if klass != elm.attrib.get('class'):
 464                 continue
 465         enabled = enable
 466     return enabled
 467
 468 def err(filename, tree, elm, msgtype, msg, error = True):
 469     """
 470     Emit a warning or error for an element
 471     """
 472     global errors, errexists, warnings, warnexists, fatals, fatalexists
 473
 474     # Let user tune whether a warning or error
 475     fatal = is_enabled(elm, msgtype, dofatals, error)
 476
 477     # By default warnings and errors are enabled, but let user tune it
 478     if not is_enabled(elm, msgtype, enables, True):
 479         return
 480
 481     (prefix, suppr) = elm_suppr(filename, tree, elm, msgtype, True)
 482     if suppr in false_positives:
 483         # That was actually expected
 484         return
 485     if suppr in suppressions:
 486         # Suppressed
 487         suppressions[suppr] = False
 488         if fatal:
 489             fatalexists += 1
 490         if error:
 491             errexists += 1
 492         else:
 493             warnexists += 1
 494         return
 495
 496     if error:
 497         errors += 1
 498     else:
 499         warnings += 1
 500     if fatal:
 501         fatals += 1
 502
 503     msg = "%s %s%s: %s%s" % (prefix,
 504             "FATAL " if fatal else "",
 505             "ERROR" if error else "WARNING",
 506             elm_name(elm), msg)
 507     print(msg)
 508     if outfile is not None:
 509         print(msg, file=outfile)
 510
 511 def warn(filename, tree, elm, msgtype, msg):
 512     """
 513     Emit a warning for an element
 514     """
 515     err(filename, tree, elm, msgtype, msg, False)
 516
 517 #
 518 # Labelling testing functions
 519 #
 520
 521 def find_button_parent(root, elm):
 522     """
 523     Find a parent which is a button
 524     """
 525     if lxml:
 526         parent = elm.getparent()
 527         if parent is not None:
 528             if parent.attrib.get('class') in widgets_buttons:
 529                 return parent
 530             return find_button_parent(root, parent)
 531     else:
 532         def find_parent(cur, elm):
 533             for o in cur:
 534                 if o == elm:
 535                     if cur.attrib.get('class') in widgets_buttons:
 536                         # we are the button, immediately above the target
 537                         return cur
 538                     else:
 539                         # we aren't the button, but target is over there
 540                         return True
 541                 parent = find_parent(o, elm)
 542                 if parent == True:
 543                     # It is over there, but didn't find a button yet
 544                     if cur.attrib.get('class') in widgets_buttons:
 545                         # we are the button
 546                         return cur
 547                     else:
 548                         return True
 549                 if parent is not None:
 550                     # we have the button parent over there
 551                     return parent
 552             return None
 553         parent = find_parent(root, elm)
 554         if parent == True:
 555             parent = None
 556         return parent
 557
 558
 559 def is_labelled_parent(elm):
 560     """
 561     Return whether this element is a labelled parent
 562     """
 563     klass = elm.attrib.get('class')
 564     if klass in widgets_toplevel:
 565         return True
 566     if klass == 'GtkShortcutsGroup':
 567         children = elm.findall("property[@name='title']")
 568         if len(children) >= 1:
 569             return True
 570     if klass == 'GtkFrame' or klass == 'GtkNotebook':
 571         children = elm.findall("child[@type='tab']") + elm.findall("child[@type='label']")
 572         if len(children) >= 1:
 573             return True
 574     return False
 575
 576 def elm_labelled_parent(root, elm):
 577     """
 578     Return the first labelled parent of the element, which can thus be used as
 579     the root of widgets with common labelled context
 580     """
 581
 582     if lxml:
 583         def find_labelled_parent(elm):
 584             if is_labelled_parent(elm):
 585                 return elm
 586             parent = elm.getparent()
 587             if parent is None:
 588                 return None
 589             return find_labelled_parent(parent)
 590         parent = elm.getparent()
 591         if parent is None:
 592             return None
 593         return find_labelled_parent(elm.getparent())
 594     else:
 595         def find_labelled_parent(cur, elm):
 596             if cur == elm:
 597                 # the target element is over there
 598                 return True
 599             for o in cur:
 600                 parent = find_labelled_parent(o, elm)
 601                 if parent == True:
 602                     # target element is over there, check ourself
 603                     if is_labelled_parent(cur):
 604                         # yes, and we are the first ancestor of the target element
 605                         return cur
 606                     else:
 607                         # no, but target element is over there.
 608                         return True
 609                 if parent != None:
 610                     # the first ancestor of the target element was over there
 611                     return parent
 612             return None
 613         parent = find_labelled_parent(root, elm)
 614         if parent == True:
 615             parent = None
 616         return parent
 617
 618 def is_orphan_label(filename, tree, root, obj, orphan_root, doprint = False):
 619     """
 620     Check whether this label has no accessibility relation, or doubtful relation
 621     because another label labels the same target
 622     """
 623     global label_for_elm, labelled_by_elm, mnemonic_for_elm, warnexists
 624
 625     # label-for
 626     label_for = obj.findall("accessibility/relation[@type='label-for']")
 627     for rel in label_for:
 628         target = rel.attrib['target']
 629         l = label_for_elm[target]
 630         if len(l) > 1:
 631             return True
 632
 633     # mnemonic_widget
 634     mnemonic_for = obj.findall("property[@name='mnemonic_widget']") + \
 635                    obj.findall("property[@name='mnemonic-widget']")
 636     for rel in mnemonic_for:
 637         target = rel.text
 638         l = mnemonic_for_elm[target]
 639         if len(l) > 1:
 640             return True
 641
 642     if len(label_for) > 0:
 643         # At least one label-for, we are not orphan.
 644         return False
 645
 646     if len(mnemonic_for) > 0:
 647         # At least one mnemonic_widget, we are not orphan.
 648         return False
 649
 650     labelled_by = obj.findall("accessibility/relation[@type='labelled-by']")
 651     if len(labelled_by) > 0:
 652         # Oh, a labelled label, probably not to be labelling anything
 653         return False
 654
 655     # explicit role?
 656     roles = [x.text for x in obj.findall("child[@internal-child='accessible']/object[@class='AtkObject']/property[@name='AtkObject::accessible-role']")]
 657     roles += [x.attrib.get("type") for x in obj.findall("accessibility/role")]
 658     if len(roles) > 1 and doprint:
 659         err(filename, tree, obj, "multiple-role", "has multiple <child internal-child='accessible'><object class='AtkObject'><property name='AtkBoject::accessible-role'>"
 660             "%s" % elms_lines(children))
 661     for role in roles:
 662         if role == 'static' or role == 'ATK_ROLE_STATIC':
 663             # This is static text, not meant to label anything
 664             return False
 665
 666     parent = elm_parent(root, obj)
 667     if parent is not None:
 668         childtype = parent.attrib.get('type')
 669         if childtype is None:
 670             childtype = parent.attrib.get('internal-child')
 671         if parent.tag == 'child' and childtype == 'label' \
 672                                   or childtype == 'tab':
 673             # This is a frame or a notebook label, not orphan.
 674             return False
 675
 676     if find_button_parent(root, obj) is not None:
 677         # This label is part of a button
 678         return False
 679
 680     oid = obj.attrib.get('id')
 681     if oid is not None:
 682         if oid in labelled_by_elm:
 683             # Some widget is labelled by us, we are not orphan.
 684             # We should have had a label-for, will warn about it later.
 685             return False
 686
 687     # No label-for, no mnemonic-for, no labelled-by, we are orphan.
 688     (_, suppr) = elm_suppr(filename, tree, obj, "orphan-label", False)
 689     if suppr in false_positives:
 690         # That was actually expected
 691         return False
 692     if suppr in suppressions:
 693         # Warning suppressed for this label
 694         if suppressions[suppr]:
 695             warnexists += 1
 696         suppressions[suppr] = False
 697         return False
 698
 699     if doprint:
 700         context = elm_name(orphan_root)
 701         if context:
 702             context = " within " + context
 703         warn(filename, tree, obj, "orphan-label", "does not specify what it labels" + context)
 704     return True
 705
 706 def is_orphan_widget(filename, tree, root, obj, orphan, orphan_root, doprint = False):
 707     """
 708     Check whether this widget has no accessibility relation.
 709     """
 710     global warnexists
 711     if obj.tag != 'object':
 712         return False
 713
 714     oid = obj.attrib.get('id')
 715     klass = obj.attrib.get('class')
 716
 717     # "Don't care" special case
 718     if klass in widgets_ignored:
 719         return False
 720     for suffix in widgets_suffixignored:
 721         if klass[-len(suffix):] == suffix:
 722             return False
 723
 724     # Widgets usual do not strictly require a label, i.e. a labelled parent
 725     # is enough for context, but some do always need one.
 726     requires_label = klass in widgets_needlabel
 727
 728     labelled_by = obj.findall("accessibility/relation[@type='labelled-by']")
 729
 730     # Labels special case
 731     if klass in widgets_labels:
 732         return False
 733
 734     # Case 1: has an explicit <child internal-child="accessible"> sub-element
 735     children = obj.findall("child[@internal-child='accessible']")
 736     if len(children) > 1 and doprint:
 737         err(filename, tree, obj, "multiple-accessible", "has multiple <child internal-child='accessible'>"
 738             "%s" % elms_lines(children))
 739     if len(children) >= 1:
 740         return False
 741
 742     # Case 2: has an <accessibility> sub-element with a "labelled-by"
 743     # <relation> pointing to an existing element.
 744     if len(labelled_by) > 0:
 745         return False
 746
 747     # Case 3: has a label-for
 748     if oid in label_for_elm:
 749         return False
 750
 751     # Case 4: has a mnemonic
 752     if oid in mnemonic_for_elm:
 753         return False
 754
 755     # Case 5: Has a <property name="tooltip_text">
 756     tooltips = obj.findall("property[@name='tooltip_text']") + \
 757                obj.findall("property[@name='tooltip-text']")
 758     if len(tooltips) > 1 and doprint:
 759         err(filename, tree, obj, "multiple-tooltip", "has multiple tooltip_text properties")
 760     if len(tooltips) >= 1 and klass != 'GtkCheckButton':
 761         return False
 762
 763     # Case 6: Has a <property name="placeholder_text">
 764     placeholders = obj.findall("property[@name='placeholder_text']") + \
 765                    obj.findall("property[@name='placeholder-text']")
 766     if len(placeholders) > 1 and doprint:
 767         err(filename, tree, obj, "multiple-placeholder", "has multiple placeholder_text properties")
 768     if len(placeholders) >= 1:
 769         return False
 770
 771     # Buttons usually don't need an external label, their own is enough, (but they do need one)
 772     if klass in widgets_buttons:
 773
 774         labels = obj.findall("property[@name='label']")
 775         if len(labels) > 1 and doprint:
 776             err(filename, tree, obj, "multiple-label", "has multiple label properties")
 777         if len(labels) >= 1:
 778             # Has a <property name="label">
 779             return False
 780
 781         actions = obj.findall("property[@name='action_name']")
 782         if len(actions) > 1 and doprint:
 783             err(filename, tree, obj, "multiple-action_name", "has multiple action_name properties")
 784         if len(actions) >= 1:
 785             # Has a <property name="action_name">
 786             return False
 787
 788         # Uses id as an action_name
 789         if 'id' in obj.attrib:
 790             if obj.attrib['id'].startswith(".uno:"):
 791                 return False
 792
 793         gtklabels = obj.findall(".//object[@class='GtkLabel']") + obj.findall(".//object[@class='GtkAccelLabel']")
 794         if len(gtklabels) >= 1:
 795             # Has a custom label
 796             return False
 797
 798         # no label for a button, warn
 799         if doprint:
 800             warn(filename, tree, obj, "button-no-label", "does not have its own label");
 801         if not is_enabled(obj, "button-no-label", enables, True):
 802             # Warnings disabled
 803             return False
 804         (_, suppr) = elm_suppr(filename, tree, obj, "button-no-label", False)
 805         if suppr in false_positives:
 806             # That was actually expected
 807             return False
 808         if suppr in suppressions:
 809             # Warning suppressed for this widget
 810             if suppressions[suppr]:
 811                 warnexists += 1
 812             suppressions[suppr] = False
 813             return False
 814         return True
 815
 816     # GtkImages special case
 817     if klass == "GtkImage":
 818         uses = [u for u in tree.iterfind(".//object/property[@name='image']") if u.text == oid]
 819         if len(uses) > 0:
 820             # This image is just used by another element, don't warn
 821             # about the image itself, we probably want the warning on
 822             # the element instead.
 823             return False
 824
 825         if find_button_parent(root, obj) is not None:
 826             # This image is part of a button, we want the warning on the button
 827             # instead, if any.
 828             return False
 829
 830     # GtkEntry special case
 831     if klass == 'GtkEntry' or klass == 'GtkSearchEntry':
 832         parent = elm_parent(root, obj)
 833         if parent is not None:
 834             if parent.tag == 'child' and \
 835                 parent.attrib.get('internal-child') == "entry":
 836                 # This is an internal entry of another widget. Relations
 837                 # will be handled by that widget.
 838                 return False
 839
 840     # GtkShortcutsShortcut special case
 841     if klass == 'GtkShortcutsShortcut':
 842         children = obj.findall("property[@name='title']")
 843         if len(children) >= 1:
 844             return False
 845
 846
 847     # Really no label, perhaps emit a warning
 848     if not is_enabled(obj, "no-labelled-by", enables, True):
 849         # Warnings disabled for this class of widgets
 850         return False
 851     (_, suppr) = elm_suppr(filename, tree, obj, "no-labelled-by", False)
 852     if suppr in false_positives:
 853         # That was actually expected
 854         return False
 855     if suppr in suppressions:
 856         # Warning suppressed for this widget
 857         if suppressions[suppr]:
 858             warnexists += 1
 859         suppressions[suppr] = False
 860         return False
 861
 862     if not orphan:
 863         # No orphan label, so probably the labelled parent provides enough
 864         # context.
 865         if requires_label:
 866             # But these always need a label.
 867             if doprint:
 868                 warn(filename, tree, obj, "no-labelled-by", "has no accessibility label")
 869             return True
 870         return False
 871
 872     if doprint:
 873         context = elm_name(orphan_root)
 874         if context:
 875             context = " within " + context
 876         warn(filename, tree, obj, "no-labelled-by", "has no accessibility label while there are orphan labels" + context)
 877     return True
 878
 879 def orphan_items(filename, tree, root, elm):
 880     """
 881     Check whether from some element there exists orphan labels and orphan widgets
 882     """
 883     orphan_labels = False
 884     orphan_widgets = False
 885     if elm.attrib.get('class') in widgets_labels:
 886         orphan_labels = is_orphan_label(filename, tree, root, elm, None)
 887     else:
 888         orphan_widgets = is_orphan_widget(filename, tree, root, elm, True, None)
 889     for obj in elm:
 890         # We are not interested in orphan labels under another labelled
 891         # parent.  This also allows to keep linear complexity.
 892         if not is_labelled_parent(obj):
 893             label, widget = orphan_items(filename, tree, root, obj)
 894             if label:
 895                 orphan_labels = True
 896             if widget:
 897                 orphan_widgets = True
 898             if orphan_labels and orphan_widgets:
 899                 # No need to look up more
 900                 break
 901     return orphan_labels, orphan_widgets
 902
 903 #
 904 # UI accessibility checks
 905 #
 906
 907 def check_props(filename, tree, root, elm, forward):
 908     """
 909     Check the given list of relation properties
 910     """
 911     props = elm.findall("property[@name='" + forward + "']")
 912     for prop in props:
 913         if prop.text not in ids:
 914             err(filename, tree, elm, "undeclared-target", forward + " uses undeclared target '%s'" % prop.text)
 915     return props
 916
 917 def is_visible(obj):
 918     visible = False
 919     visible_prop = obj.findall("property[@name='visible']")
 920     visible_len = len(visible_prop)
 921     if visible_len:
 922         visible_txt = visible_prop[visible_len - 1].text
 923         if visible_txt.lower() == "true":
 924             visible = True
 925         elif visible_txt.lower() == "false":
 926             visible = False
 927     return visible
 928
 929 def check_rels(filename, tree, root, elm, forward, backward = None):
 930     """
 931     Check the relations given by forward
 932     """
 933     oid = elm.attrib.get('id')
 934     rels = elm.findall("accessibility/relation[@type='" + forward + "']")
 935     for rel in rels:
 936         target = rel.attrib['target']
 937         if target not in ids:
 938             err(filename, tree, elm, "undeclared-target", forward + " uses undeclared target '%s'" % target)
 939         elif backward is not None:
 940             widget = ids[target]
 941             backrels = widget.findall("accessibility/relation[@type='" + backward + "']")
 942             if len([x for x in backrels if x.attrib['target'] == oid]) == 0:
 943                 err(filename, tree, elm, "missing-" + backward, "has " + forward + \
 944                     ", but is not " + backward + " by " + elm_name_line(widget))
 945     return rels
 946
 947 def check_a11y_relation(filename, tree):
 948     """
 949     Emit an error message if any of the 'object' elements of the XML
 950     document represented by `root' doesn't comply with Accessibility
 951     rules.
 952     """
 953     global widgets_ignored, ids, label_for_elm, labelled_by_elm, mnemonic_for_elm
 954
 955     def check_elm(orphan_root, obj, orphan_labels, orphan_widgets):
 956         """
 957         Check one element, knowing that orphan_labels/widgets tell whether
 958         there are orphan labels and widgets within orphan_root
 959         """
 960
 961         oid = obj.attrib.get('id')
 962         klass = obj.attrib.get('class')
 963
 964         # "Don't care" special case
 965         if klass in widgets_ignored:
 966             return
 967         for suffix in widgets_suffixignored:
 968             if klass[-len(suffix):] == suffix:
 969                 return
 970
 971         # Widgets usual do not strictly require a label, i.e. a labelled parent
 972         # is enough for context, but some do always need one.
 973         requires_label = klass in widgets_needlabel
 974
 975         if oid is not None:
 976             # Check that ids are unique
 977             if oid in ids_dup:
 978                 if ids[oid] == obj:
 979                     # We are the first, warn
 980                     duplicates = tree.findall(".//object[@id='" + oid + "']")
 981                     err(filename, tree, obj, "duplicate-id", "has the same id as other elements " + elms_names_lines(duplicates))
 982
 983         # Check label-for and their dual labelled-by
 984         label_for = check_rels(filename, tree, root, obj, "label-for", "labelled-by")
 985
 986         # Check labelled-by and its dual label-for
 987         labelled_by = check_rels(filename, tree, root, obj, "labelled-by", "label-for")
 988
 989         visible = is_visible(obj)
 990
 991         # Should have only one label
 992         if len(labelled_by) >= 1:
 993             if oid in mnemonic_for_elm:
 994                 warn(filename, tree, obj, "labelled-by-and-mnemonic",
 995                      "has both a mnemonic " + elm_name_line(mnemonic_for_elm[oid][0]) + "and labelled-by relation")
 996             if len(labelled_by) > 1:
 997                 warn(filename, tree, obj, "multiple-labelled-by", "has multiple labelled-by relations")
 998         if oid in label_for_elm:
 999             if len(label_for_elm[oid]) > 1:
1000                 warn(filename, tree, obj, "duplicate-label-for", "is referenced by multiple label-for " + elms_names_lines(label_for_elm[oid]))
1001             elif len(label_for_elm[oid]) == 1:
1002                 paired = label_for_elm[oid][0]
1003                 if visible != is_visible(paired):
1004                     warn(filename, tree, obj, "visibility-conflict", "visibility conflicts with paired " + elm_name_line(paired))
1005         if oid in mnemonic_for_elm:
1006             if len(mnemonic_for_elm[oid]) > 1:
1007                 warn(filename, tree, obj, "duplicate-mnemonic", "is referenced by multiple mnemonic_widget " + elms_names_lines(mnemonic_for_elm[oid]))
1008
1009         # Check member-of
1010         member_of = check_rels(filename, tree, root, obj, "member-of")
1011
1012         # Labels special case
1013         if klass in widgets_labels:
1014             properties = check_props(filename, tree, root, obj, "mnemonic_widget") + \
1015                          check_props(filename, tree, root, obj, "mnemonic-widget")
1016             if len(properties) > 1:
1017                 err(filename, tree, obj, "multiple-mnemonic", "has multiple mnemonic_widgets properties"
1018                     "%s" % elms_lines(properties))
1019
1020             # Emit orphaning warnings
1021             if warn_orphan_labels or orphan_widgets:
1022                 is_orphan_label(filename, tree, root, obj, orphan_root, True)
1023
1024             # We are done with the label
1025             return
1026
1027         # Not a label, will perhaps need one
1028
1029         # Emit orphaning warnings
1030         is_orphan_widget(filename, tree, root, obj, orphan_labels, orphan_root, True)
1031
1032     root = tree.getroot()
1033
1034     # Flush ids and relations from previous files
1035     ids = {}
1036     ids_dup = {}
1037     labelled_by_elm = {}
1038     label_for_elm = {}
1039     mnemonic_for_elm = {}
1040
1041     # First pass to get links into hash tables, no warning, just record duplicates
1042     for obj in root.iter('object'):
1043         oid = obj.attrib.get('id')
1044         if oid is not None:
1045             if oid not in ids:
1046                 ids[oid] = obj
1047             else:
1048                 ids_dup[oid] = True
1049
1050         labelled_by = obj.findall("accessibility/relation[@type='labelled-by']")
1051         for rel in labelled_by:
1052             target = rel.attrib.get('target')
1053             if target is not None:
1054                 if target not in labelled_by_elm:
1055                     labelled_by_elm[target] = [ obj ]
1056                 else:
1057                     labelled_by_elm[target].append(obj)
1058
1059         label_for = obj.findall("accessibility/relation[@type='label-for']")
1060         for rel in label_for:
1061             target = rel.attrib.get('target')
1062             if target is not None:
1063                 if target not in label_for_elm:
1064                     label_for_elm[target] = [ obj ]
1065                 else:
1066                     label_for_elm[target].append(obj)
1067
1068         mnemonic_for = obj.findall("property[@name='mnemonic_widget']") + \
1069                        obj.findall("property[@name='mnemonic-widget']")
1070         for rel in mnemonic_for:
1071             target = rel.text
1072             if target is not None:
1073                 if target not in mnemonic_for_elm:
1074                     mnemonic_for_elm[target] = [ obj ]
1075                 else:
1076                     mnemonic_for_elm[target].append(obj)
1077
1078     # Second pass, recursive depth-first, to be able to efficiently know whether
1079     # there are orphan labels within a part of the tree.
1080     def recurse(orphan_root, obj, orphan_labels, orphan_widgets):
1081         if obj == root or is_labelled_parent(obj):
1082             orphan_root = obj
1083             orphan_labels, orphan_widgets = orphan_items(filename, tree, root, obj)
1084
1085         if obj.tag == 'object':
1086             check_elm(orphan_root, obj, orphan_labels, orphan_widgets)
1087
1088         for o in obj:
1089             recurse(orphan_root, o, orphan_labels, orphan_widgets)
1090
1091     recurse(root, root, False, False)
1092
1093 #
1094 # Main
1095 #
1096
1097 def usage(fatal = True):
1098     print("`%s' checks accessibility of glade .ui files" % progname)
1099     print("")
1100     print("Usage: %s [-p] [-g SUPPR_FILE] [-s SUPPR_FILE] [-f SUPPR_FILE] [-P PREFIX] [-o LOG_FILE] [file ...]" % progname)
1101     print("")
1102     print("  -p Print XML class path instead of line number")
1103     print("  -g Generate suppression file SUPPR_FILE")
1104     print("  -s Suppress warnings given by file SUPPR_FILE, but count them")
1105     print("  -f Suppress warnings given by file SUPPR_FILE completely")
1106     print("  -P Remove PREFIX from file names in warnings")
1107     print("  -o Also prints errors and warnings to given file")
1108     print("")
1109     print("  --widgets-FOO [+][CLASS1[,CLASS2[,...]]]")
1110     print("    Give or extend one of the lists of widget classes, where FOO can be:")
1111     print("    - toplevel      : widgets to be considered toplevel windows")
1112     print("    - ignored       : widgets which do not need labelling (e.g. GtkBox)")
1113     print("    - suffixignored : suffixes of widget classes which do not need labelling")
1114     print("    - needlabel     : widgets which always need labelling (e.g. GtkEntry)")
1115     print("    - buttons       : widgets which need their own label but not more")
1116     print("                      (e.g. GtkButton)")
1117     print("    - labels        : widgets which provide labels (e.g. GtkLabel)")
1118     print("  --widgets-print print default widgets lists")
1119     print("")
1120     print("  --enable-all         enable all warnings/dofatals (default)")
1121     print("  --disable-all        disable all warnings/dofatals")
1122     print("  --fatal-all          make all warnings dofatals")
1123     print("  --not-fatal-all      do not make all warnings dofatals (default)")
1124     print("")
1125     print("  --enable-type=TYPE    enable warning/fatal type TYPE")
1126     print("  --disable-type=TYPE   disable warning/fatal type TYPE")
1127     print("  --fatal-type=TYPE     make warning type TYPE a fatal")
1128     print("  --not-fatal-type=TYPE make warning type TYPE not a fatal")
1129     print("")
1130     print("  --enable-widgets=CLASS    enable warning/fatal type CLASS")
1131     print("  --disable-widgets=CLASS   disable warning/fatal type CLASS")
1132     print("  --fatal-widgets=CLASS     make warning type CLASS a fatal")
1133     print("  --not-fatal-widgets=CLASS make warning type CLASS not a fatal")
1134     print("")
1135     print("  --enable-specific=TYPE.CLASS    enable warning/fatal type TYPE for widget")
1136     print("                                  class CLASS")
1137     print("  --disable-specific=TYPE.CLASS   disable warning/fatal type TYPE for widget")
1138     print("                                  class CLASS")
1139     print("  --fatal-specific=TYPE.CLASS     make warning type TYPE a fatal for widget")
1140     print("                                  class CLASS")
1141     print("  --not-fatal-specific=TYPE.CLASS make warning type TYPE not a fatal for widget")
1142     print("                                  class CLASS")
1143     print("")
1144     print("  --disable-orphan-labels         only warn about orphan labels when there are")
1145     print("                                  orphan widgets in the same context")
1146     print("")
1147     print("Report bugs to <bugs@hypra.fr>")
1148     sys.exit(2 if fatal else 0)
1149
1150 def widgets_opt(widgets_list, arg):
1151     """
1152     Replace or extend `widgets_list' with the list of classes contained in `arg'
1153     """
1154     append = arg and arg[0] == '+'
1155     if append:
1156         arg = arg[1:]
1157
1158     if arg:
1159         widgets = arg.split(',')
1160     else:
1161         widgets = []
1162
1163     if not append:
1164         del widgets_list[:]
1165
1166     widgets_list.extend(widgets)
1167
1168
1169 def main():
1170     global pflag, gen_suppr, gen_supprfile, suppressions, suppr_prefix, false_positives, dofatals, enables, dofatals, warn_orphan_labels
1171     global widgets_toplevel, widgets_ignored, widgets_suffixignored, widgets_needlabel, widgets_buttons, widgets_labels
1172     global outfile
1173
1174     try:
1175         opts, args = getopt.getopt(sys.argv[1:], "hpiIg:s:f:P:o:L:", [
1176                 "help",
1177                 "version",
1178
1179                 "widgets-toplevel=",
1180                 "widgets-ignored=",
1181                 "widgets-suffixignored=",
1182                 "widgets-needlabel=",
1183                 "widgets-buttons=",
1184                 "widgets-labels=",
1185                 "widgets-print",
1186
1187                 "enable-all",
1188                 "disable-all",
1189                 "fatal-all",
1190                 "not-fatal-all",
1191
1192                 "enable-type=",
1193                 "disable-type=",
1194                 "fatal-type=",
1195                 "not-fatal-type=",
1196
1197                 "enable-widgets=",
1198                 "disable-widgets=",
1199                 "fatal-widgets=",
1200                 "not-fatal-widgets=",
1201
1202                 "enable-specific=",
1203                 "disable-specific=",
1204                 "fatal-specific=",
1205                 "not-fatal-specific=",
1206
1207                 "disable-orphan-labels",
1208             ] )
1209     except getopt.GetoptError:
1210         usage()
1211
1212     suppr = None
1213     false = None
1214     out = None
1215     filelist = None
1216
1217     for o, a in opts:
1218         if o == "--help" or o == "-h":
1219             usage(False)
1220         if o == "--version":
1221             print("0.1")
1222             sys.exit(0)
1223         elif o == "-p":
1224             pflag = True
1225         elif o == "-g":
1226             gen_suppr = a
1227         elif o == "-s":
1228             suppr = a
1229         elif o == "-f":
1230             false = a
1231         elif o == "-P":
1232             suppr_prefix = a
1233         elif o == "-o":
1234             out = a
1235         elif o == "-L":
1236             filelist = a
1237
1238         elif o == "--widgets-toplevel":
1239             widgets_opt(widgets_toplevel, a)
1240         elif o == "--widgets-ignored":
1241             widgets_opt(widgets_ignored, a)
1242         elif o == "--widgets-suffixignored":
1243             widgets_opt(widgets_suffixignored, a)
1244         elif o == "--widgets-needlabel":
1245             widgets_opt(widgets_needlabel, a)
1246         elif o == "--widgets-buttons":
1247             widgets_opt(widgets_buttons, a)
1248         elif o == "--widgets-labels":
1249             widgets_opt(widgets_labels, a)
1250         elif o == "--widgets-print":
1251             print("--widgets-toplevel '" + ','.join(widgets_toplevel) + "'")
1252             print("--widgets-ignored '" + ','.join(widgets_ignored) + "'")
1253             print("--widgets-suffixignored '" + ','.join(widgets_suffixignored) + "'")
1254             print("--widgets-needlabel '" + ','.join(widgets_needlabel) + "'")
1255             print("--widgets-buttons '" + ','.join(widgets_buttons) + "'")
1256             print("--widgets-labels '" + ','.join(widgets_labels) + "'")
1257             sys.exit(0)
1258
1259         elif o == '--enable-all':
1260             enables.append( (True, None, None) )
1261         elif o == '--disable-all':
1262             enables.append( (False, None, None) )
1263         elif o == '--fatal-all':
1264             dofatals.append( (True, None, None) )
1265         elif o == '--not-fatal-all':
1266             dofatals.append( (False, None, None) )
1267
1268         elif o == '--enable-type':
1269             enables.append( (True, a, None) )
1270         elif o == '--disable-type':
1271             enables.append( (False, a, None) )
1272         elif o == '--fatal-type':
1273             dofatals.append( (True, a, None) )
1274         elif o == '--not-fatal-type':
1275             dofatals.append( (False, a, None) )
1276
1277         elif o == '--enable-widgets':
1278             enables.append( (True, None, a) )
1279         elif o == '--disable-widgets':
1280             enables.append( (False, None, a) )
1281         elif o == '--fatal-widgets':
1282             dofatals.append( (True, None, a) )
1283         elif o == '--not-fatal-widgets':
1284             dofatals.append( (False, None, a) )
1285
1286         elif o == '--enable-specific':
1287             (thetype, klass) = a.split('.', 1)
1288             enables.append( (True, thetype, klass) )
1289         elif o == '--disable-specific':
1290             (thetype, klass) = a.split('.', 1)
1291             enables.append( (False, thetype, klass) )
1292         elif o == '--fatal-specific':
1293             (thetype, klass) = a.split('.', 1)
1294             dofatals.append( (True, thetype, klass) )
1295         elif o == '--not-fatal-specific':
1296             (thetype, klass) = a.split('.', 1)
1297             dofatals.append( (False, thetype, klass) )
1298
1299         elif o == '--disable-orphan-labels':
1300             warn_orphan_labels = False
1301
1302     # Read suppression file before overwriting it
1303     if suppr is not None:
1304         try:
1305             supprfile = open(suppr, 'r')
1306             line_no = 1;
1307             for line in supprfile.readlines():
1308                 prefix = line.rstrip()
1309                 suppressions[prefix] = True
1310                 suppressions_to_line[prefix] = line_no
1311                 line_no = line_no + 1;
1312             supprfile.close()
1313         except IOError:
1314             pass
1315
1316     # Read false positives file
1317     if false is not None:
1318         try:
1319             falsefile = open(false, 'r')
1320             for line in falsefile.readlines():
1321                 prefix = line.rstrip()
1322                 false_positives[prefix] = True
1323             falsefile.close()
1324         except IOError:
1325             pass
1326
1327     if out is not None:
1328         outfile = open(out, 'w')
1329
1330     if filelist is not None:
1331         try:
1332             filelistfile = open(filelist, 'r')
1333             for line in filelistfile.readlines():
1334                 line = line.strip()
1335                 if line:
1336                     args += line.split(' ')
1337             filelistfile.close()
1338         except IOError:
1339             err(filelist, None, None, "unable to read file list file")
1340
1341     for filename in args:
1342         try:
1343             tree = ET.parse(filename)
1344         except ET.ParseError:
1345             err(filename, None, None, "parse", "malformatted xml file")
1346             continue
1347         except IOError:
1348             err(filename, None, None, None, "unable to read file")
1349             continue
1350
1351         try:
1352             check_a11y_relation(filename, tree)
1353         except Exception as error:
1354             import traceback
1355             traceback.print_exc()
1356             err(filename, None, None, "parse", "error parsing file")
1357
1358     if errors > 0 or errexists > 0:
1359         estr = "%s new error%s" % (errors, 's' if errors > 1 else '')
1360         if errexists > 0:
1361             estr += " (%s suppressed by %s)" % (errexists, suppr)
1362         print(estr)
1363
1364     if warnings > 0 or warnexists > 0:
1365         wstr = "%s new warning%s" % (warnings, 's' if warnings > 1 else '')
1366         if warnexists > 0:
1367             wstr += " (%s suppressed by %s)" % (warnexists, suppr)
1368         print(wstr)
1369
1370     if fatals > 0 or fatalexists > 0:
1371         wstr = "%s new fatal%s" % (fatals, 's' if fatals > 1 else '')
1372         if fatalexists > 0:
1373             wstr += " (%s suppressed by %s)" % (fatalexists, suppr)
1374         print(wstr)
1375
1376     n = 0
1377     for (suppr,unused) in suppressions.items():
1378         if unused:
1379             n += 1
1380
1381     if n > 0:
1382         print("%s suppression%s unused:" % (n, 's' if n > 1 else ''))
1383         for (suppr,unused) in suppressions.items():
1384             if unused:
1385                 print("    %s:%s" % (suppressions_to_line[suppr], suppr))
1386
1387     if gen_supprfile is not None:
1388         gen_supprfile.close()
1389     if outfile is not None:
1390         outfile.close()
1391     if fatals > 0 and gen_suppr is None:
1392         print("Explanations are available on https://wiki.documentfoundation.org/Development/Accessibility")
1393         sys.exit(1)
1394
1395
1396 if __name__ == "__main__":
1397     try:
1398         main()
1399     except KeyboardInterrupt:
1400         pass
1401
1402 # vim: set shiftwidth=4 softtabstop=4 expandtab: