chrome/browser/resources/chromeos/chromevox/common/command_store.js

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5
   6 /**
   7  * @fileoverview This class acts as the persistent store for all static data
   8  * about commands.
   9  *
  10  * This store can safely be used within either a content or background script
  11  * context.
  12  *
  13  * If you are looking to add a user command, follow the below steps for best
  14  * integration with existing components:
  15  * 1. Add a command below in cvox.CommandStore.CMD_WHITELIST. Pick a
  16  * programmatic name and fill in each of the relevant JSON keys.
  17  * Be sure to add a msg id and define it in chromevox/messages/messages.js which
  18  * describes the command. Please also add a category msg id so that the command
  19  * will show up in the options page.
  20  * 2. Add the command's logic to cvox.UserCommands inside of our switch-based
  21  * dispatch method (doCommand_).
  22  * 3. Add a key binding in chromevox/background/keymaps/classic_keymap.json and
  23  * chromevox/background/keymaps/flat_keymap.json.
  24  *
  25  * Class description:
  26  * This class is entirely static and holds a JSON structure that stores
  27  * commands and their associated metadata.
  28  *
  29  * From this metadata, we compute relevant subsets of data such as all present
  30  * categories.
  31  */
  32
  33
  34 goog.provide('cvox.CommandStore');
  35
  36 goog.require('cvox.PlatformFilter');
  37
  38
  39 /**
  40  * Returns all of the categories in the store as an array.
  41  * @return {Array<string>} The collection of categories.
  42  */
  43 cvox.CommandStore.categories = function() {
  44   var categorySet = {};
  45   for (var cmd in cvox.CommandStore.CMD_WHITELIST) {
  46     var struct = cvox.CommandStore.CMD_WHITELIST[cmd];
  47     if (struct.category) {
  48       categorySet[struct.category] = true;
  49     }
  50   }
  51   var ret = [];
  52   for (var category in categorySet) {
  53     ret.push(category);
  54   }
  55   return ret;
  56 };
  57
  58
  59 /**
  60  * Gets a message given a command.
  61  * @param {string} command The command to query.
  62  * @return {string|undefined} The message id, if any.
  63  */
  64 cvox.CommandStore.messageForCommand = function(command) {
  65   return (cvox.CommandStore.CMD_WHITELIST[command] || {}).msgId;
  66 };
  67
  68
  69 /**
  70  * Gets a category given a command.
  71  * @param {string} command The command to query.
  72  * @return {string|undefined} The command, if any.
  73  */
  74 cvox.CommandStore.categoryForCommand = function(command) {
  75   return (cvox.CommandStore.CMD_WHITELIST[command] || {}).category;
  76 };
  77
  78
  79 /**
  80  * Gets all commands for a category.
  81  * @param {string} category The category to query.
  82  * @return {Array<string>} The commands, if any.
  83  */
  84 cvox.CommandStore.commandsForCategory = function(category) {
  85   var ret = [];
  86   for (var cmd in cvox.CommandStore.CMD_WHITELIST) {
  87     var struct = cvox.CommandStore.CMD_WHITELIST[cmd];
  88     if (category == struct.category) {
  89       ret.push(cmd);
  90     }
  91   }
  92   return ret;
  93 };
  94
  95
  96 /**
  97  * List of commands and their properties
  98  * @type {Object<{forward: (undefined|boolean),
  99  *                backward: (undefined|boolean),
 100  *                announce: boolean,
 101  *                category: (undefined|string),
 102  *                findNext: (undefined|string),
 103  *                doDefault: (undefined|boolean),
 104  *                msgId: (undefined|string),
 105  *                nodeList: (undefined|string),
 106  *                platformFilter: (undefined|cvox.PlatformFilter),
 107  *                skipInput: (undefined|boolean),
 108  *                allowEvents: (undefined|boolean),
 109  *                disallowContinuation: (undefined|boolean)}>}
 110  *  forward: Whether this command points forward.
 111  *  backward: Whether this command points backward. If neither forward or
 112  *            backward are specified, it stays facing in the current direction.
 113  *  announce: Whether to call finishNavCommand and announce the current
 114  *            position after the command is done.
 115  *  findNext: The id from the map above if this command is used for
 116  *            finding next/previous of something.
 117  *  category: The message resource describing the command's category.
 118  *  doDefault: Whether to do the default action. This means that keys will be
 119  *             passed through to the usual DOM capture/bubble phases.
 120  *  msgId: The message resource describing the command.
 121  *  nodeList: The id from the map above if this command is used for
 122  *            showing a list of nodes.
 123  *  platformFilter: Specifies to which platforms this command applies. If left
 124  *                  undefined, the command applies to all platforms.
 125  *  skipInput: Explicitly skips this command when text input has focus.
 126  *             Defaults to false.
 127  *  disallowOOBE: Explicitly disallows this command when on chrome://oobe/*.
 128  *             Defaults to false.
 129  *  allowEvents: Allows EventWatcher to continue processing events which can
 130  * trump TTS.
 131  *  disallowContinuation: Disallows continuous read to proceed. Defaults to
 132  * false.
 133  */
 134 cvox.CommandStore.CMD_WHITELIST = {
 135   'toggleStickyMode': {announce: false,
 136                        msgId: 'toggle_sticky_mode',
 137                        'disallowOOBE': true,
 138                        category: 'modifier_keys'},
 139   'toggleKeyPrefix': {announce: false,
 140                       skipInput: true,
 141                       msgId: 'prefix_key',
 142                          'disallowOOBE': true,
 143                       category: 'modifier_keys'},
 144   'passThroughMode': {announce: false,
 145                       msgId: 'pass_through_key_description',
 146                       category: 'modifier_keys'},
 147
 148   'stopSpeech': {announce: false,
 149                  disallowContinuation: true,
 150                  doDefault: true,
 151                  msgId: 'stop_speech_key',
 152                  category: 'controlling_speech'},
 153   'toggleChromeVox': {announce: false,
 154                       platformFilter: cvox.PlatformFilter.WML,
 155                       msgId: 'toggle_chromevox_active',
 156                       category: 'controlling_speech'},
 157   'decreaseTtsRate': {announce: false,
 158                       msgId: 'decrease_tts_rate',
 159                       category: 'controlling_speech'},
 160   'increaseTtsRate': {announce: false,
 161                       msgId: 'increase_tts_rate',
 162                       category: 'controlling_speech'},
 163   'decreaseTtsPitch': {announce: false,
 164                       msgId: 'decrease_tts_pitch',
 165                       category: 'controlling_speech'},
 166   'increaseTtsPitch': {announce: false,
 167                       msgId: 'increase_tts_pitch',
 168                       category: 'controlling_speech'},
 169   'decreaseTtsVolume': {announce: false,
 170                       msgId: 'decrease_tts_volume',
 171                       category: 'controlling_speech'},
 172   'increaseTtsVolume': {announce: false,
 173                       msgId: 'increase_tts_volume',
 174                       category: 'controlling_speech'},
 175   'cyclePunctuationEcho': {announce: false,
 176                            msgId: 'cycle_punctuation_echo',
 177                            category: 'controlling_speech'},
 178   'cycleTypingEcho': {announce: false,
 179                       msgId: 'cycle_typing_echo',
 180                       category: 'controlling_speech'},
 181
 182
 183   'toggleEarcons': {announce: true,
 184                     msgId: 'toggle_earcons',
 185                     category: 'controlling_speech'},
 186
 187   'handleTab': {
 188     allowEvents: true,
 189     msgId: 'handle_tab_next',
 190     disallowContinuation: true,
 191     category: 'navigation'},
 192   'handleTabPrev': {
 193     allowEvents: true,
 194     msgId: 'handle_tab_prev',
 195     disallowContinuation: true,
 196     category: 'navigation'},
 197   'forward': {forward: true,
 198               announce: true,
 199               msgId: 'forward',
 200               category: 'navigation'},
 201   'backward': {backward: true,
 202                announce: true,
 203                msgId: 'backward',
 204                category: 'navigation'},
 205   'right': {forward: true,
 206             announce: true,
 207             msgId: 'right',
 208             category: 'navigation'},
 209   'left': {backward: true,
 210            announce: true,
 211            msgId: 'left',
 212            category: 'navigation'},
 213   'previousGranularity': {announce: true,
 214                           msgId: 'previous_granularity',
 215                           category: 'navigation'},
 216   'nextGranularity': {announce: true,
 217                           msgId: 'next_granularity',
 218                           category: 'navigation'},
 219
 220   'previousCharacter': {backward: true,
 221                         announce: true,
 222                         msgId: 'previous_character',
 223                         skipInput: true,
 224                         category: 'navigation'},
 225   'nextCharacter': {forward: true,
 226                     announce: true,
 227                     msgId: 'next_character',
 228                     skipInput: true,
 229                     category: 'navigation'},
 230   'previousWord': {backward: true,
 231                         announce: true,
 232                         msgId: 'previous_word',
 233                         skipInput: true,
 234                         category: 'navigation'},
 235   'nextWord': {forward: true,
 236                     announce: true,
 237                     msgId: 'next_word',
 238                     skipInput: true,
 239                     category: 'navigation'},
 240   'previousLine': {backward: true,
 241                         announce: true,
 242                         msgId: 'previous_line',
 243                         category: 'navigation'},
 244   'nextLine': {forward: true,
 245                     announce: true,
 246                     msgId: 'next_line',
 247                     category: 'navigation'},
 248   'previousSentence': {backward: true,
 249                         announce: true,
 250                         msgId: 'previous_sentence',
 251                         skipInput: true,
 252                         category: 'navigation'},
 253   'nextSentence': {forward: true,
 254                     announce: true,
 255                     msgId: 'next_sentence',
 256                     skipInput: true,
 257                     category: 'navigation'},
 258   'previousObject': {backward: true,
 259                         announce: true,
 260                         msgId: 'previous_object',
 261                         skipInput: true,
 262                         category: 'navigation'},
 263   'nextObject': {forward: true,
 264                     announce: true,
 265                     msgId: 'next_object',
 266                     skipInput: true,
 267                     category: 'navigation'},
 268   'previousGroup': {backward: true,
 269                         announce: true,
 270                         msgId: 'previous_group',
 271                         skipInput: true,
 272                         category: 'navigation'},
 273   'nextGroup': {forward: true,
 274                     announce: true,
 275                     msgId: 'next_group',
 276                     skipInput: true,
 277                     category: 'navigation'},
 278
 279   'jumpToTop': {forward: true,
 280                 announce: true,
 281                 msgId: 'jump_to_top',
 282                 category: 'navigation'
 283 },
 284   'jumpToBottom': {backward: true,
 285                    announce: true,
 286                    msgId: 'jump_to_bottom',
 287                    category: 'navigation'},
 288   // Intentionally uncategorized.
 289   'moveToStartOfLine': {forward: true, announce: true},
 290   'moveToEndOfLine': {backward: true, announce: true},
 291
 292   'readFromHere': {forward: true,
 293                    announce: false,
 294                    msgId: 'read_from_here',
 295                    category: 'navigation'},
 296
 297   'performDefaultAction': {disallowContinuation: true,
 298                            msgId: 'perform_default_action',
 299                            doDefault: true,
 300                            skipInput: true,
 301                            category: 'navigation'},
 302   'forceClickOnCurrentItem': {announce: true,
 303                               disallowContinuation: true,
 304                               allowEvents: true,
 305                               msgId: 'force_click_on_current_item',
 306                               category: 'navigation'},
 307   'forceDoubleClickOnCurrentItem': {announce: true,
 308                                     allowEvents: true,
 309                                     disallowContinuation: true},
 310
 311   'readLinkURL': {announce: false,
 312                   msgId: 'read_link_url',
 313                   category: 'information'},
 314   'readCurrentTitle': {announce: false,
 315                        msgId: 'read_current_title',
 316                        category: 'information'},
 317   'readCurrentURL': {announce: false,
 318                      msgId: 'read_current_url',
 319                      category: 'information'},
 320
 321   'fullyDescribe': {announce: false,
 322                     msgId: 'fully_describe',
 323                     category: 'information'},
 324   'speakTimeAndDate': {announce: false,
 325                        msgId: 'speak_time_and_date',
 326                        category: 'information'},
 327   'toggleSelection': {announce: true,
 328                       msgId: 'toggle_selection',
 329                       category: 'information'},
 330
 331   'toggleSearchWidget': {announce: false,
 332                          disallowContinuation: true,
 333                          msgId: 'toggle_search_widget',
 334                          category: 'information'},
 335
 336   'toggleKeyboardHelp': {announce: false,
 337                          disallowContinuation: true,
 338                          msgId: 'show_power_key',
 339                          category: 'help_commands'},
 340   'help': {announce: false,
 341            msgId: 'help',
 342            'disallowOOBE': true,
 343            disallowContinuation: true,
 344            category: 'help_commands'},
 345   'contextMenu': {announce: false,
 346                   disallowContinuation: true},
 347
 348   'showOptionsPage': {announce: false,
 349                       disallowContinuation: true,
 350                       msgId: 'show_options_page',
 351                       'disallowOOBE': true,
 352                       category: 'help_commands'},
 353   'showKbExplorerPage': {announce: false,
 354                          disallowContinuation: true,
 355                          msgId: 'show_kb_explorer_page',
 356                          'disallowOOBE': true,
 357                          category: 'help_commands'},
 358
 359
 360   'showFormsList': {announce: false,
 361                     disallowContinuation: true,
 362                     nodeList: 'formField',
 363                     msgId: 'show_forms_list',
 364                     category: 'overview'},
 365   'showHeadingsList': {announce: false, nodeList: 'heading',
 366                        disallowContinuation: true,
 367                        msgId: 'show_headings_list',
 368                        category: 'overview'},
 369   'showLandmarksList': {announce: false, nodeList: 'landmark',
 370                         disallowContinuation: true,
 371                         msgId: 'show_landmarks_list',
 372                         category: 'overview'},
 373   'showLinksList': {announce: false, nodeList: 'link',
 374                     disallowContinuation: true,
 375                     msgId: 'show_links_list',
 376                     category: 'overview'},
 377   'showTablesList': {announce: false, nodeList: 'table',
 378                      disallowContinuation: true,
 379                      msgId: 'show_tables_list',
 380                      category: 'overview'},
 381
 382   'nextArticle': {forward: true,
 383                   findNext: 'article'},
 384
 385   'nextButton': {forward: true,
 386                  findNext: 'button',
 387                  msgId: 'next_button',
 388                  category: 'jump_commands'},
 389   'nextCheckbox': {forward: true,
 390                    findNext: 'checkbox',
 391                    msgId: 'next_checkbox',
 392                    category: 'jump_commands'},
 393   'nextComboBox': {forward: true,
 394                    findNext: 'combobox',
 395                    msgId: 'next_combo_box',
 396                    category: 'jump_commands'},
 397   'nextControl': {forward: true, findNext: 'control'},
 398   'nextEditText': {forward: true,
 399                    findNext: 'editText',
 400                    msgId: 'next_edit_text',
 401                    category: 'jump_commands'},
 402   'nextFormField': {forward: true,
 403                     findNext: 'formField',
 404                     msgId: 'next_form_field',
 405                     category: 'jump_commands'},
 406   'nextGraphic': {forward: true,
 407                   findNext: 'graphic',
 408                   msgId: 'next_graphic',
 409                   category: 'jump_commands'},
 410   'nextHeading': {forward: true,
 411                   findNext: 'heading',
 412                   msgId: 'next_heading',
 413                   category: 'jump_commands'},
 414   'nextHeading1': {forward: true,
 415                    findNext: 'heading1',
 416                    msgId: 'next_heading1',
 417                    category: 'jump_commands'},
 418   'nextHeading2': {forward: true,
 419                    findNext: 'heading2',
 420                    msgId: 'next_heading2',
 421                    category: 'jump_commands'},
 422   'nextHeading3': {forward: true,
 423                    findNext: 'heading3',
 424                    msgId: 'next_heading3',
 425                    category: 'jump_commands'},
 426   'nextHeading4': {forward: true,
 427                    findNext: 'heading4',
 428                    msgId: 'next_heading4',
 429                    category: 'jump_commands'},
 430   'nextHeading5': {forward: true,
 431                    findNext: 'heading5',
 432                    msgId: 'next_heading5',
 433                    category: 'jump_commands'},
 434   'nextHeading6': {forward: true,
 435                    findNext: 'heading6',
 436                    msgId: 'next_heading6',
 437                    category: 'jump_commands'},
 438
 439   'nextLandmark': {forward: true,
 440                    findNext: 'landmark',
 441                    msgId: 'next_landmark',
 442                    category: 'jump_commands'},
 443   'nextLink': {forward: true,
 444                findNext: 'link',
 445                msgId: 'next_link',
 446                category: 'jump_commands'},
 447   'nextList': {forward: true,
 448                findNext: 'list',
 449                msgId: 'next_list',
 450                category: 'jump_commands'},
 451   'nextListItem': {forward: true,
 452                    findNext: 'listItem',
 453                    msgId: 'next_list_item',
 454                    category: 'jump_commands'},
 455   'nextMath': {forward: true,
 456                findNext: 'math',
 457                msgId: 'next_math',
 458                category: 'jump_commands'},
 459   'nextMedia': {forward: true,
 460                 findNext: 'media',
 461                 msgId: 'next_media',
 462                 category: 'jump_commands'},
 463   'nextRadio': {forward: true,
 464                 findNext: 'radio',
 465                 msgId: 'next_radio',
 466                 category: 'jump_commands'},
 467   'nextSection': {forward: true, findNext: 'section'},
 468   'nextSlider': {forward: true, findNext: 'slider'},
 469   'nextTable': {forward: true,
 470                 findNext: 'table',
 471                 msgId: 'next_table',
 472                 category: 'jump_commands'},
 473   'nextVisitedLink': {forward: true,
 474                 findNext: 'visitedLink',
 475                 msgId: 'next_visited_link',
 476                 category: 'jump_commands'},
 477
 478
 479   'previousArticle': {backward: true,
 480                   findNext: 'article'},
 481
 482   'previousButton': {backward: true,
 483                  findNext: 'button',
 484                  msgId: 'previous_button',
 485                  category: 'jump_commands'},
 486   'previousCheckbox': {backward: true,
 487                    findNext: 'checkbox',
 488                    msgId: 'previous_checkbox',
 489                    category: 'jump_commands'},
 490   'previousComboBox': {backward: true,
 491                    findNext: 'combobox',
 492                    msgId: 'previous_combo_box',
 493                    category: 'jump_commands'},
 494   'previousControl': {backward: true, findNext: 'control'},
 495   'previousEditText': {backward: true,
 496                    findNext: 'editText',
 497                    msgId: 'previous_edit_text',
 498                    category: 'jump_commands'},
 499   'previousFormField': {backward: true,
 500                     findNext: 'formField',
 501                     msgId: 'previous_form_field',
 502                     category: 'jump_commands'},
 503   'previousGraphic': {backward: true,
 504                   findNext: 'graphic',
 505                   msgId: 'previous_graphic',
 506                   category: 'jump_commands'},
 507   'previousHeading': {backward: true,
 508                   findNext: 'heading',
 509                   msgId: 'previous_heading',
 510                   category: 'jump_commands'},
 511   'previousHeading1': {backward: true,
 512                    findNext: 'heading1',
 513                    msgId: 'previous_heading1',
 514                    category: 'jump_commands'},
 515   'previousHeading2': {backward: true,
 516                    findNext: 'heading2',
 517                    msgId: 'previous_heading2',
 518                    category: 'jump_commands'},
 519   'previousHeading3': {backward: true,
 520                    findNext: 'heading3',
 521                    msgId: 'previous_heading3',
 522                    category: 'jump_commands'},
 523   'previousHeading4': {backward: true,
 524                    findNext: 'heading4',
 525                    msgId: 'previous_heading4',
 526                    category: 'jump_commands'},
 527   'previousHeading5': {backward: true,
 528                    findNext: 'heading5',
 529                    msgId: 'previous_heading5',
 530                    category: 'jump_commands'},
 531   'previousHeading6': {backward: true,
 532                    findNext: 'heading6',
 533                    msgId: 'previous_heading6',
 534                    category: 'jump_commands'},
 535
 536   'previousLandmark': {backward: true,
 537                    findNext: 'landmark',
 538                    msgId: 'previous_landmark',
 539                    category: 'jump_commands'},
 540   'previousLink': {backward: true,
 541                    findNext: 'link',
 542                    msgId: 'previous_link',
 543                    category: 'jump_commands'},
 544   'previousList': {backward: true,
 545                findNext: 'list',
 546                msgId: 'previous_list',
 547                category: 'jump_commands'},
 548   'previousListItem': {backward: true,
 549                    findNext: 'listItem',
 550                    msgId: 'previous_list_item',
 551                    category: 'jump_commands'},
 552   'previousMath': {backward: true,
 553                    findNext: 'math',
 554                    msgId: 'previous_math',
 555                    category: 'jump_commands'},
 556   'previousMedia': {backward: true,
 557                     findNext: 'media',
 558                     msgId: 'previous_media',
 559                     category: 'jump_commands'},
 560   'previousRadio': {backward: true,
 561                 findNext: 'radio',
 562                 msgId: 'previous_radio',
 563                 category: 'jump_commands'},
 564   'previousSection': {backward: true, findNext: 'section'},
 565   'previousSlider': {backward: true, findNext: 'slider'},
 566   'previousTable': {backward: true,
 567                 findNext: 'table',
 568                 msgId: 'previous_table',
 569                 category: 'jump_commands'},
 570   'previousVisitedLink': {backward: true,
 571                           findNext: 'visitedLink',
 572                           msgId: 'previous_visited_link',
 573                           category: 'jump_commands'},
 574
 575
 576   // Table Actions.
 577   'announceHeaders': {announce: false,
 578                       msgId: 'announce_headers',
 579                       category: 'tables'},
 580   'speakTableLocation': {announce: false,
 581                          msgId: 'speak_table_location',
 582                          category: 'tables'},
 583   'goToFirstCell': {announce: true,
 584                     msgId: 'skip_to_beginning',
 585                     category: 'tables'},
 586   'goToLastCell': {announce: true,
 587                    msgId: 'skip_to_end',
 588                    category: 'tables'},
 589   'goToRowFirstCell': {announce: true,
 590                        msgId: 'skip_to_row_beginning',
 591                        category: 'tables'},
 592   'goToRowLastCell': {announce: true,
 593                       msgId: 'skip_to_row_end',
 594                       category: 'tables'},
 595   'goToColFirstCell': {announce: true,
 596                        msgId: 'skip_to_col_beginning',
 597                        category: 'tables'},
 598   'goToColLastCell': {announce: true,
 599                       msgId: 'skip_to_col_end',
 600                       category: 'tables'},
 601   // These commands are left out of the options page because they involve
 602   // multiple, non-user configurable modifiers.
 603   'previousRow': {backward: true, announce: true, skipInput: true},
 604   'previousCol': {backward: true, announce: true, skipInput: true},
 605   'nextRow': {forward: true, announce: true, skipInput: true},
 606   'nextCol': {forward: true, announce: true, skipInput: true},
 607
 608   // Generic Actions.
 609   'enterShifter': {announce: true,
 610                    msgId: 'enter_content',
 611                    category: 'navigation'},
 612   'exitShifter': {announce: true,
 613                   msgId: 'exit_content',
 614                   category: 'navigation'},
 615   'exitShifterContent': {announce: true},
 616
 617   'openLongDesc': {announce: false,
 618                    msgId: 'open_long_desc',
 619                    category: 'information'},
 620
 621   'pauseAllMedia': {announce: false,
 622                     msgId: 'pause_all_media',
 623                     category: 'information'},
 624
 625   // Math specific commands.
 626   'toggleSemantics': {announce: false,
 627                       msgId: 'toggle_semantics',
 628                       category: 'information'},
 629
 630   // Braille specific commands.
 631   'routing': {announce: false,
 632               allowEvents: true,
 633               msgId: 'braille_routing',
 634               category: 'braille'},
 635   'pan_left': {backward: true,
 636                announce: true,
 637                msgId: 'braille_pan_left',
 638                category: 'braille'},
 639   'pan_right': {forward: true,
 640                 announce: true,
 641                 msgId: 'braille_pan_right',
 642                 category: 'braille'},
 643   'line_up': {backward: true,
 644               announce: true,
 645               msgId: 'braille_line_up',
 646               category: 'braille'},
 647   'line_down': {forward: true,
 648                 announce: true,
 649                 msgId: 'braille_line_down',
 650                 category: 'braille'},
 651   'top': {forward: true,
 652                 announce: true,
 653                 msgId: 'braille_top',
 654                 category: 'braille'},
 655   'bottom': {backward: true,
 656                 announce: true,
 657                 msgId: 'braille_bottom',
 658                 category: 'braille'},
 659
 660   // Developer commands.
 661   'enableConsoleTts': {announce: false,
 662                       msgId: 'enable_tts_log',
 663                       category: 'developer'},
 664   'toggleBrailleCaptions': {announce: false,
 665                             msgId: 'braille_captions',
 666                             category: 'developer'},
 667
 668   'startHistoryRecording': {announce: false},
 669   'stopHistoryRecording': {announce: false},
 670   'autorunner': {announce: false},
 671
 672   'debug': {announce: false},
 673
 674   'nop': {announce: false}
 675 };
 676
 677
 678 /**
 679  * List of find next commands and their associated data.
 680  * @type {Object<{predicate: string,
 681  *                forwardError: string,
 682  *                backwardError: string}>}
 683  *  predicate: The name of the predicate. This must be defined in DomPredicates.
 684  *  forwardError: The message id of the error string when moving forward.
 685  *  backwardError: The message id of the error string when moving backward.
 686  */
 687 cvox.CommandStore.NODE_INFO_MAP = {
 688   'checkbox': {predicate: 'checkboxPredicate',
 689                forwardError: 'no_next_checkbox',
 690                backwardError: 'no_previous_checkbox',
 691                typeMsg: 'aria_role_checkbox'},
 692   'radio': {predicate: 'radioPredicate',
 693             forwardError: 'no_next_radio_button',
 694             backwardError: 'no_previous_radio_button',
 695             typeMsg: 'aria_role_radio'},
 696   'slider': {predicate: 'sliderPredicate',
 697              forwardError: 'no_next_slider',
 698              backwardError: 'no_previous_slider',
 699              typeMsg: 'aria_role_slider'},
 700   'graphic': {predicate: 'graphicPredicate',
 701               forwardError: 'no_next_graphic',
 702               backwardError: 'no_previous_graphic',
 703               typeMsg: 'UNUSED'},
 704   'article': {predicate: 'articlePredicate',
 705              forwardError: 'no_next_ARTICLE',
 706              backwardError: 'no_previous_ARTICLE',
 707              typeMsg: 'TAG_ARTICLE'},
 708   'button': {predicate: 'buttonPredicate',
 709              forwardError: 'no_next_button',
 710              backwardError: 'no_previous_button',
 711              typeMsg: 'aria_role_button'},
 712   'combobox': {predicate: 'comboBoxPredicate',
 713                forwardError: 'no_next_combo_box',
 714                backwardError: 'no_previous_combo_box',
 715                typeMsg: 'aria_role_combobox'},
 716   'editText': {predicate: 'editTextPredicate',
 717                forwardError: 'no_next_edit_text',
 718                backwardError: 'no_previous_edit_text',
 719                typeMsg: 'input_type_text'},
 720   'heading': {predicate: 'headingPredicate',
 721               forwardError: 'no_next_heading',
 722               backwardError: 'no_previous_heading',
 723               typeMsg: 'aria_role_heading'},
 724   'heading1': {predicate: 'heading1Predicate',
 725                forwardError: 'no_next_heading_1',
 726                backwardError: 'no_previous_heading_1'},
 727   'heading2': {predicate: 'heading2Predicate',
 728                forwardError: 'no_next_heading_2',
 729                backwardError: 'no_previous_heading_2'},
 730   'heading3': {predicate: 'heading3Predicate',
 731                forwardError: 'no_next_heading_3',
 732                backwardError: 'no_previous_heading_3'},
 733   'heading4': {predicate: 'heading4Predicate',
 734                forwardError: 'no_next_heading_4',
 735                backwardError: 'no_previous_heading_4'},
 736   'heading5': {predicate: 'heading5Predicate',
 737                forwardError: 'no_next_heading_5',
 738                backwardError: 'no_previous_heading_5'},
 739   'heading6': {predicate: 'heading6Predicate',
 740                forwardError: 'no_next_heading_6',
 741                backwardError: 'no_previous_heading_6'},
 742
 743   'link': {predicate: 'linkPredicate',
 744            forwardError: 'no_next_link',
 745            backwardError: 'no_previous_link',
 746            typeMsg: 'aria_role_link'},
 747   'table': {predicate: 'tablePredicate',
 748             forwardError: 'no_next_table',
 749             backwardError: 'no_previous_table',
 750             typeMsg: 'table_strategy'},
 751   'visitedLink': {predicate: 'visitedLinkPredicate',
 752             forwardError: 'no_next_visited_link',
 753             backwardError: 'no_previous_visited_link',
 754             typeMsg: 'tag_link'},
 755   'list': {predicate: 'listPredicate',
 756            forwardError: 'no_next_list',
 757            backwardError: 'no_previous_list',
 758            typeMsg: 'aria_role_list'},
 759   'listItem': {predicate: 'listItemPredicate',
 760                forwardError: 'no_next_list_item',
 761                backwardError: 'no_previous_list_item',
 762                typeMsg: 'aria_role_listitem'},
 763   'formField': {predicate: 'formFieldPredicate',
 764                 forwardError: 'no_next_form_field',
 765                 backwardError: 'no_previous_form_field',
 766                 typeMsg: 'aria_role_form'},
 767   'landmark': {predicate: 'landmarkPredicate',
 768                forwardError: 'no_next_landmark',
 769                backwardError: 'no_previous_landmark',
 770                typeMsg: 'role_landmark'},
 771   'math': {predicate: 'mathPredicate',
 772            forwardError: 'no_next_math',
 773            backwardError: 'no_previous_math',
 774            typeMsg: 'math_expr'},
 775   'media': {predicate: 'mediaPredicate',
 776             forwardError: 'no_next_media_widget',
 777             backwardError: 'no_previous_media_widget'},
 778   'section': {predicate: 'sectionPredicate',
 779            forwardError: 'no_next_section',
 780            backwardError: 'no_previous_section'},
 781   'control': {predicate: 'controlPredicate',
 782            forwardError: 'no_next_control',
 783            backwardError: 'no_previous_control'}
 784 };