accessible/src/base/nsARIAMap.cpp

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   5  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
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  17  * The Original Code is mozilla.org code.
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  20  * Portions created by the Initial Developer are Copyright (C) 2007
  21  * the Initial Developer. All Rights Reserved.
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  23  * Contributor(s):
  24  *   Aaron Leventhal <aleventh@us.ibm.com>
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  39
  40 #include "nsARIAMap.h"
  41 #include "nsIAccessibleRole.h"
  42 #include "nsIAccessibleStates.h"
  43
  44 /**
  45  *  This list of WAI-defined roles are currently hardcoded.
  46  *  Eventually we will most likely be loading an RDF resource that contains this information
  47  *  Using RDF will also allow for role extensibility. See bug 280138.
  48  *
  49  *  Definition of nsRoleMapEntry and nsStateMapEntry contains comments explaining this table.
  50  *
  51  *  When no nsIAccessibleRole enum mapping exists for an ARIA role, the
  52  *  role will be exposed via the object attribute "xml-roles".
  53  *  In addition, in MSAA, the unmapped role will also be exposed as a BSTR string role.
  54  *
  55  *  There are no nsIAccessibleRole enums for the following landmark roles:
  56  *    banner, contentinfo, main, navigation, note, search, secondary, seealso, breadcrumbs
  57  */
  58
  59 static const nsStateMapEntry kEndEntry = {nsnull, 0, 0};  // To fill in array of state mappings
  60
  61 nsRoleMapEntry nsARIAMap::gWAIRoleMap[] =
  62 {
  63   {
  64     "alert",
  65     nsIAccessibleRole::ROLE_ALERT,
  66     eNoValue,
  67     eNoAction,
  68     kNoReqStates,
  69     kEndEntry
  70   },
  71   {
  72     "alertdialog",
  73     nsIAccessibleRole::ROLE_ALERT,
  74     eNoValue,
  75     eNoAction,
  76     kNoReqStates,
  77     kEndEntry
  78   },
  79   {
  80     "application",
  81     nsIAccessibleRole::ROLE_APPLICATION,
  82     eNoValue,
  83     eNoAction,
  84     kNoReqStates,
  85     kEndEntry
  86   },
  87   {
  88     "article",
  89     nsIAccessibleRole::ROLE_DOCUMENT,
  90     eNoValue,
  91     eNoAction,
  92     kNoReqStates,
  93     kEndEntry
  94   },
  95   {
  96     "button",
  97     nsIAccessibleRole::ROLE_PUSHBUTTON,
  98     eNoValue,
  99     eClickAction,
 100     kNoReqStates,
 101     {&nsAccessibilityAtoms::aria_pressed, kBoolState, nsIAccessibleStates::STATE_PRESSED},
 102     {&nsAccessibilityAtoms::aria_pressed, "mixed", nsIAccessibleStates::STATE_MIXED},
 103     kEndEntry
 104   },
 105   {
 106     "checkbox",
 107     nsIAccessibleRole::ROLE_CHECKBUTTON,
 108     eNoValue,
 109     eCheckUncheckAction,
 110     nsIAccessibleStates::STATE_CHECKABLE,
 111     {&nsAccessibilityAtoms::aria_checked, kBoolState, nsIAccessibleStates::STATE_CHECKED},
 112     {&nsAccessibilityAtoms::aria_checked, "mixed", nsIAccessibleStates::STATE_MIXED},
 113     {&nsAccessibilityAtoms::aria_readonly, kBoolState, nsIAccessibleStates::STATE_READONLY},
 114     kEndEntry
 115   },
 116   {
 117     "columnheader",
 118     nsIAccessibleRole::ROLE_COLUMNHEADER,
 119     eNoValue,
 120     eNoAction,
 121     kNoReqStates,
 122     {&nsAccessibilityAtoms::aria_selected, kBoolState, nsIAccessibleStates::STATE_SELECTED | nsIAccessibleStates::STATE_SELECTABLE},
 123     {&nsAccessibilityAtoms::aria_selected, "false", nsIAccessibleStates::STATE_SELECTABLE},
 124     {&nsAccessibilityAtoms::aria_readonly, kBoolState, nsIAccessibleStates::STATE_READONLY},
 125     kEndEntry
 126   },
 127   {
 128     "combobox",
 129     nsIAccessibleRole::ROLE_COMBOBOX,
 130     eHasValueMinMax,
 131     eOpenCloseAction,
 132     nsIAccessibleStates::STATE_COLLAPSED | nsIAccessibleStates::STATE_HASPOPUP,
 133     // Manually map EXT_STATE_SUPPORTS_AUTOCOMPLETION aria-autocomplete
 134     {&nsAccessibilityAtoms::aria_readonly, kBoolState, nsIAccessibleStates::STATE_READONLY},
 135     {&nsAccessibilityAtoms::aria_expanded, kBoolState, nsIAccessibleStates::STATE_EXPANDED},
 136     kEndEntry
 137   },
 138   {
 139     "description",
 140     nsIAccessibleRole::ROLE_TEXT_CONTAINER,
 141     eNoValue,
 142     eNoAction,
 143     kNoReqStates,
 144     kEndEntry
 145   },
 146   {
 147     "dialog",
 148     nsIAccessibleRole::ROLE_DIALOG,
 149     eNoValue,
 150     eNoAction,
 151     kNoReqStates,
 152     kEndEntry
 153   },
 154   {
 155     "document",
 156     nsIAccessibleRole::ROLE_DOCUMENT,
 157     eNoValue,
 158     eNoAction,
 159     kNoReqStates,
 160     kEndEntry
 161   },
 162   {
 163     "grid",
 164     nsIAccessibleRole::ROLE_TABLE,
 165     eNoValue,
 166     eNoAction,
 167     nsIAccessibleStates::STATE_FOCUSABLE,
 168     {&nsAccessibilityAtoms::aria_multiselectable, kBoolState, nsIAccessibleStates::STATE_MULTISELECTABLE | nsIAccessibleStates::STATE_EXTSELECTABLE},
 169     {&nsAccessibilityAtoms::aria_readonly, kBoolState, nsIAccessibleStates::STATE_READONLY},
 170     kEndEntry
 171   },
 172   {
 173     "gridcell",
 174     nsIAccessibleRole::ROLE_CELL,
 175     eNoValue,
 176     eNoAction,
 177     kNoReqStates,
 178     {&nsAccessibilityAtoms::aria_expanded, kBoolState, nsIAccessibleStates::STATE_EXPANDED},
 179     {&nsAccessibilityAtoms::aria_expanded, "false", nsIAccessibleStates::STATE_COLLAPSED},
 180     {&nsAccessibilityAtoms::aria_selected, kBoolState, nsIAccessibleStates::STATE_SELECTED | nsIAccessibleStates::STATE_SELECTABLE},
 181     {&nsAccessibilityAtoms::aria_selected, "false", nsIAccessibleStates::STATE_SELECTABLE},
 182     {&nsAccessibilityAtoms::aria_readonly, kBoolState, nsIAccessibleStates::STATE_READONLY},
 183     kEndEntry
 184   },
 185   {
 186     "group",
 187     nsIAccessibleRole::ROLE_GROUPING,
 188     eNoValue,
 189     eNoAction,
 190     kNoReqStates,
 191     kEndEntry
 192   },
 193   {
 194     "heading",
 195     nsIAccessibleRole::ROLE_HEADING,
 196     eNoValue,
 197     eNoAction,
 198     kNoReqStates,
 199     kEndEntry
 200   },
 201   {
 202     "img",
 203     nsIAccessibleRole::ROLE_GRAPHIC,
 204     eNoValue,
 205     eNoAction,
 206     kNoReqStates,
 207     kEndEntry
 208   },
 209   {
 210     "label",
 211     nsIAccessibleRole::ROLE_LABEL,
 212     eNoValue,
 213     eNoAction,
 214     kNoReqStates,
 215     kEndEntry
 216   },
 217   {
 218     "link",
 219     nsIAccessibleRole::ROLE_LINK,
 220     eNoValue,
 221     eJumpAction,
 222     nsIAccessibleStates::STATE_LINKED,
 223     kEndEntry
 224   },
 225   {
 226     "list",
 227     nsIAccessibleRole::ROLE_LIST,
 228     eNoValue,
 229     eNoAction,
 230     nsIAccessibleStates::STATE_READONLY,
 231     {&nsAccessibilityAtoms::aria_multiselectable, kBoolState, nsIAccessibleStates::STATE_MULTISELECTABLE | nsIAccessibleStates::STATE_EXTSELECTABLE},
 232     kEndEntry
 233   },
 234   {
 235     "listbox",
 236     nsIAccessibleRole::ROLE_LISTBOX,
 237     eNoValue,
 238     eNoAction,
 239     kNoReqStates,
 240     {&nsAccessibilityAtoms::aria_readonly, kBoolState, nsIAccessibleStates::STATE_READONLY},
 241     {&nsAccessibilityAtoms::aria_multiselectable, kBoolState, nsIAccessibleStates::STATE_MULTISELECTABLE | nsIAccessibleStates::STATE_EXTSELECTABLE},
 242     kEndEntry
 243   },
 244   {
 245     "listitem",
 246     nsIAccessibleRole::ROLE_LISTITEM,
 247     eNoValue,
 248     eNoAction, // XXX: should depend on state, parent accessible
 249     nsIAccessibleStates::STATE_READONLY,
 250     {&nsAccessibilityAtoms::aria_selected, kBoolState, nsIAccessibleStates::STATE_SELECTED | nsIAccessibleStates::STATE_SELECTABLE},
 251     {&nsAccessibilityAtoms::aria_selected, "false", nsIAccessibleStates::STATE_SELECTABLE},
 252     {&nsAccessibilityAtoms::aria_checked, kBoolState, nsIAccessibleStates::STATE_CHECKED | nsIAccessibleStates::STATE_CHECKABLE},
 253     {&nsAccessibilityAtoms::aria_checked, "mixed", nsIAccessibleStates::STATE_MIXED | nsIAccessibleStates::STATE_CHECKABLE},
 254     {&nsAccessibilityAtoms::aria_checked, "false", nsIAccessibleStates::STATE_CHECKABLE},
 255     kEndEntry
 256   },
 257   {
 258     "math",
 259     nsIAccessibleRole::ROLE_FLAT_EQUATION,
 260     eNoValue,
 261     eNoAction,
 262     kNoReqStates,
 263     kEndEntry
 264   },
 265   {
 266     "menu",
 267     nsIAccessibleRole::ROLE_MENUPOPUP,
 268     eNoValue,
 269     eNoAction, // XXX: technically accessibles of menupopup role haven't
 270                // any action, but menu can be open or close.
 271     kNoReqStates,
 272     kEndEntry
 273   },
 274   {
 275     "menubar",
 276     nsIAccessibleRole::ROLE_MENUBAR,
 277     eNoValue,
 278     eNoAction,
 279     kNoReqStates,
 280     kEndEntry
 281   },
 282   {
 283     "menuitem",
 284     nsIAccessibleRole::ROLE_MENUITEM,
 285     eNoValue,
 286     eClickAction,
 287     kNoReqStates,
 288     {&nsAccessibilityAtoms::aria_checked, kBoolState, nsIAccessibleStates::STATE_CHECKED | nsIAccessibleStates::STATE_CHECKABLE},
 289     {&nsAccessibilityAtoms::aria_checked, "mixed", nsIAccessibleStates::STATE_MIXED | nsIAccessibleStates::STATE_CHECKABLE},
 290     {&nsAccessibilityAtoms::aria_checked, "false", nsIAccessibleStates::STATE_CHECKABLE},
 291     kEndEntry
 292   },
 293   {
 294     "menuitemcheckbox",
 295     nsIAccessibleRole::ROLE_CHECK_MENU_ITEM,
 296     eNoValue,
 297     eClickAction,
 298     nsIAccessibleStates::STATE_CHECKABLE,
 299     {&nsAccessibilityAtoms::aria_checked, kBoolState, nsIAccessibleStates::STATE_CHECKED },
 300     {&nsAccessibilityAtoms::aria_checked, "mixed", nsIAccessibleStates::STATE_MIXED},
 301     kEndEntry
 302   },
 303   {
 304     "menuitemradio",
 305     nsIAccessibleRole::ROLE_RADIO_MENU_ITEM,
 306     eNoValue,
 307     eClickAction,
 308     nsIAccessibleStates::STATE_CHECKABLE,
 309     {&nsAccessibilityAtoms::aria_checked, kBoolState, nsIAccessibleStates::STATE_CHECKED },
 310     kEndEntry
 311   },
 312   {
 313     "option",
 314     nsIAccessibleRole::ROLE_OPTION,
 315     eNoValue,
 316     eSelectAction,
 317     kNoReqStates,
 318     {&nsAccessibilityAtoms::aria_selected, kBoolState, nsIAccessibleStates::STATE_SELECTED | nsIAccessibleStates::STATE_SELECTABLE},
 319     {&nsAccessibilityAtoms::aria_selected, "false", nsIAccessibleStates::STATE_SELECTABLE},
 320     {&nsAccessibilityAtoms::aria_checked, kBoolState, nsIAccessibleStates::STATE_CHECKED | nsIAccessibleStates::STATE_CHECKABLE},
 321     {&nsAccessibilityAtoms::aria_checked, "mixed", nsIAccessibleStates::STATE_MIXED | nsIAccessibleStates::STATE_CHECKABLE},
 322     {&nsAccessibilityAtoms::aria_checked, "false", nsIAccessibleStates::STATE_CHECKABLE},
 323     kEndEntry
 324   },
 325   {
 326     "presentation",
 327     nsIAccessibleRole::ROLE_NOTHING,
 328     eNoValue,
 329     eNoAction,
 330     kNoReqStates,
 331     kEndEntry
 332   },
 333   {
 334     "progressbar",
 335     nsIAccessibleRole::ROLE_PROGRESSBAR,
 336     eHasValueMinMax,
 337     eNoAction,
 338     nsIAccessibleStates::STATE_READONLY,
 339     kEndEntry
 340   },
 341   {
 342     "radio",
 343     nsIAccessibleRole::ROLE_RADIOBUTTON,
 344     eNoValue,
 345     eSelectAction,
 346     kNoReqStates,
 347     {&nsAccessibilityAtoms::aria_checked, kBoolState, nsIAccessibleStates::STATE_CHECKED},
 348     kEndEntry
 349   },
 350   {
 351     "radiogroup",
 352     nsIAccessibleRole::ROLE_GROUPING,
 353     eNoValue,
 354     eNoAction,
 355     kNoReqStates,
 356     kEndEntry
 357   },
 358   {
 359     "region",
 360     nsIAccessibleRole::ROLE_PANE,
 361     eNoValue,
 362     eNoAction,
 363     kNoReqStates,
 364     kEndEntry
 365   },
 366   {
 367     "row",
 368     nsIAccessibleRole::ROLE_ROW,
 369     eNoValue,
 370     eNoAction,
 371     kNoReqStates,
 372     {&nsAccessibilityAtoms::aria_selected, kBoolState, nsIAccessibleStates::STATE_SELECTED | nsIAccessibleStates::STATE_SELECTABLE},
 373     {&nsAccessibilityAtoms::aria_selected, "false", nsIAccessibleStates::STATE_SELECTABLE},
 374     {&nsAccessibilityAtoms::aria_expanded, kBoolState, nsIAccessibleStates::STATE_EXPANDED},
 375     {&nsAccessibilityAtoms::aria_expanded, "false", nsIAccessibleStates::STATE_COLLAPSED},
 376     kEndEntry
 377   },
 378   {
 379     "rowheader",
 380     nsIAccessibleRole::ROLE_ROWHEADER,
 381     eNoValue,
 382     eNoAction,
 383     kNoReqStates,
 384     {&nsAccessibilityAtoms::aria_selected, kBoolState, nsIAccessibleStates::STATE_SELECTED | nsIAccessibleStates::STATE_SELECTABLE},
 385     {&nsAccessibilityAtoms::aria_selected, "false", nsIAccessibleStates::STATE_SELECTABLE},
 386     {&nsAccessibilityAtoms::aria_readonly, kBoolState, nsIAccessibleStates::STATE_READONLY},
 387     kEndEntry
 388   },
 389   {
 390     "section",
 391     nsIAccessibleRole::ROLE_SECTION,
 392     eNoValue,
 393     eNoAction,
 394     kNoReqStates,
 395     kEndEntry
 396   },
 397   {
 398     "separator",
 399     nsIAccessibleRole::ROLE_SEPARATOR,
 400     eNoValue,
 401     eNoAction,
 402     kNoReqStates,
 403     kEndEntry
 404   },
 405   {
 406     "slider",
 407     nsIAccessibleRole::ROLE_SLIDER,
 408     eHasValueMinMax,
 409     eNoAction,
 410     kNoReqStates,
 411     {&nsAccessibilityAtoms::aria_readonly, kBoolState, nsIAccessibleStates::STATE_READONLY},
 412     kEndEntry
 413   },
 414   {
 415     "spinbutton",
 416     nsIAccessibleRole::ROLE_SPINBUTTON,
 417     eHasValueMinMax,
 418     eNoAction,
 419     kNoReqStates,
 420     {&nsAccessibilityAtoms::aria_readonly, kBoolState, nsIAccessibleStates::STATE_READONLY},
 421     kEndEntry
 422   },
 423   {
 424     "status",
 425     nsIAccessibleRole::ROLE_STATUSBAR,
 426     eNoValue,
 427     eNoAction,
 428     kNoReqStates,
 429     kEndEntry
 430   },
 431   {
 432     "tab",
 433     nsIAccessibleRole::ROLE_PAGETAB,
 434     eNoValue,
 435     eSwitchAction,
 436     kNoReqStates,
 437     kEndEntry
 438   },
 439   {
 440     "tablist",
 441     nsIAccessibleRole::ROLE_PAGETABLIST,
 442     eNoValue,
 443     eNoAction,
 444     kNoReqStates,
 445     kEndEntry
 446   },
 447   {
 448     "tabpanel",
 449     nsIAccessibleRole::ROLE_PROPERTYPAGE,
 450     eNoValue,
 451     eNoAction,
 452     kNoReqStates,
 453     kEndEntry
 454   },
 455   {
 456     "textbox",
 457     nsIAccessibleRole::ROLE_ENTRY,
 458     eNoValue,
 459     eActivateAction,
 460     kNoReqStates,
 461     // Manually map EXT_STATE_SINGLE_LINE and EXT_STATE_MULTI_LINE FROM aria-multiline
 462     // Manually map EXT_STATE_SUPPORTS_AUTOCOMPLETION aria-autocomplete
 463     {&nsAccessibilityAtoms::aria_autocomplete, "list", nsIAccessibleStates::STATE_HASPOPUP},
 464     {&nsAccessibilityAtoms::aria_autocomplete, "both", nsIAccessibleStates::STATE_HASPOPUP},
 465     {&nsAccessibilityAtoms::aria_readonly, kBoolState, nsIAccessibleStates::STATE_READONLY},
 466     kEndEntry
 467   },
 468   {
 469     "toolbar",
 470     nsIAccessibleRole::ROLE_TOOLBAR,
 471     eNoValue,
 472     eNoAction,
 473     kNoReqStates,
 474     kEndEntry
 475   },
 476   {
 477     "tooltip",
 478     nsIAccessibleRole::ROLE_TOOLTIP,
 479     eNoValue,
 480     eNoAction,
 481     kNoReqStates,
 482     kEndEntry
 483   },
 484   {
 485     "tree",
 486     nsIAccessibleRole::ROLE_OUTLINE,
 487     eNoValue,
 488     eNoAction,
 489     kNoReqStates,
 490     {&nsAccessibilityAtoms::aria_readonly, kBoolState, nsIAccessibleStates::STATE_READONLY},
 491     {&nsAccessibilityAtoms::aria_multiselectable, kBoolState, nsIAccessibleStates::STATE_MULTISELECTABLE | nsIAccessibleStates::STATE_EXTSELECTABLE},
 492     kEndEntry
 493   },
 494   {
 495     "treegrid",
 496     nsIAccessibleRole::ROLE_TREE_TABLE,
 497     eNoValue,
 498     eNoAction,
 499     kNoReqStates,
 500     {&nsAccessibilityAtoms::aria_readonly, kBoolState, nsIAccessibleStates::STATE_READONLY},
 501     {&nsAccessibilityAtoms::aria_multiselectable, kBoolState, nsIAccessibleStates::STATE_MULTISELECTABLE | nsIAccessibleStates::STATE_EXTSELECTABLE},
 502     kEndEntry
 503   },
 504   {
 505     "treeitem",
 506     nsIAccessibleRole::ROLE_OUTLINEITEM,
 507     eNoValue,
 508     eActivateAction, // XXX: should expose second 'expand/collapse' action based
 509                      // on states
 510     kNoReqStates,
 511     {&nsAccessibilityAtoms::aria_selected, kBoolState, nsIAccessibleStates::STATE_SELECTED | nsIAccessibleStates::STATE_SELECTABLE},
 512     {&nsAccessibilityAtoms::aria_selected, "false", nsIAccessibleStates::STATE_SELECTABLE},
 513     {&nsAccessibilityAtoms::aria_expanded, kBoolState, nsIAccessibleStates::STATE_EXPANDED},
 514     {&nsAccessibilityAtoms::aria_expanded, "false", nsIAccessibleStates::STATE_COLLAPSED},
 515     {&nsAccessibilityAtoms::aria_checked, kBoolState, nsIAccessibleStates::STATE_CHECKED | nsIAccessibleStates::STATE_CHECKABLE},
 516     {&nsAccessibilityAtoms::aria_checked, "mixed", nsIAccessibleStates::STATE_MIXED | nsIAccessibleStates::STATE_CHECKABLE},
 517     {&nsAccessibilityAtoms::aria_checked, "false", nsIAccessibleStates::STATE_CHECKABLE},
 518   },
 519 };
 520
 521 PRUint32 nsARIAMap::gWAIRoleMapLength = NS_ARRAY_LENGTH(nsARIAMap::gWAIRoleMap);
 522
 523 nsRoleMapEntry nsARIAMap::gLandmarkRoleMap = {
 524   "",
 525   nsIAccessibleRole::ROLE_NOTHING,
 526   eNoValue,
 527   eNoAction,
 528   kNoReqStates,
 529   kEndEntry
 530 };
 531
 532 nsRoleMapEntry nsARIAMap::gEmptyRoleMap = {
 533   "",
 534   nsIAccessibleRole::ROLE_NOTHING,
 535   eNoValue,
 536   eNoAction,
 537   kNoReqStates,
 538   kEndEntry
 539 };
 540
 541 /**
 542  * Universal states:
 543  * The following state rules are applied to any accessible element,
 544  * whether there is an ARIA role or not:
 545  */
 546 nsStateMapEntry nsARIAMap::gWAIUnivStateMap[] = {
 547   {&nsAccessibilityAtoms::aria_required, kBoolState, nsIAccessibleStates::STATE_REQUIRED},
 548   {&nsAccessibilityAtoms::aria_invalid,  kBoolState, nsIAccessibleStates::STATE_INVALID},
 549   {&nsAccessibilityAtoms::aria_haspopup, kBoolState, nsIAccessibleStates::STATE_HASPOPUP},
 550   {&nsAccessibilityAtoms::aria_busy,     "true",     nsIAccessibleStates::STATE_BUSY},
 551   {&nsAccessibilityAtoms::aria_busy,     "error",    nsIAccessibleStates::STATE_INVALID},
 552   {&nsAccessibilityAtoms::aria_disabled, kBoolState, nsIAccessibleStates::STATE_UNAVAILABLE},
 553   kEndEntry
 554 };
 555