gecko/accessible/tests/mochitest/common.js

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////////////////////////////////////////////////////////////////////////////////
// Interfaces
const nsIAccessibleRetrieval = Components.interfaces.nsIAccessibleRetrieval;
const nsIAccessibleEvent = Components.interfaces.nsIAccessibleEvent;
const nsIAccessibleStateChangeEvent =
Components.interfaces.nsIAccessibleStateChangeEvent;
const nsIAccessibleCaretMoveEvent =
Components.interfaces.nsIAccessibleCaretMoveEvent;
const nsIAccessibleTextChangeEvent =
Components.interfaces.nsIAccessibleTextChangeEvent;
const nsIAccessibleStates = Components.interfaces.nsIAccessibleStates;
const nsIAccessibleRole = Components.interfaces.nsIAccessibleRole;
const nsIAccessibleTypes = Components.interfaces.nsIAccessibleTypes;
const nsIAccessibleRelation = Components.interfaces.nsIAccessibleRelation;
const nsIAccessNode = Components.interfaces.nsIAccessNode;
const nsIAccessible = Components.interfaces.nsIAccessible;
const nsIAccessibleCoordinateType =
Components.interfaces.nsIAccessibleCoordinateType;
const nsIAccessibleDocument = Components.interfaces.nsIAccessibleDocument;
const nsIAccessibleApplication = Components.interfaces.nsIAccessibleApplication;
const nsIAccessibleText = Components.interfaces.nsIAccessibleText;
const nsIAccessibleEditableText = Components.interfaces.nsIAccessibleEditableText;
const nsIAccessibleHyperLink = Components.interfaces.nsIAccessibleHyperLink;
const nsIAccessibleHyperText = Components.interfaces.nsIAccessibleHyperText;
const nsIAccessibleImage = Components.interfaces.nsIAccessibleImage;
const nsIAccessibleSelectable = Components.interfaces.nsIAccessibleSelectable;
const nsIAccessibleTable = Components.interfaces.nsIAccessibleTable;
const nsIAccessibleTableCell = Components.interfaces.nsIAccessibleTableCell;
const nsIAccessibleValue = Components.interfaces.nsIAccessibleValue;
const nsIObserverService = Components.interfaces.nsIObserverService;
const nsIDOMDocument = Components.interfaces.nsIDOMDocument;
const nsIDOMEvent = Components.interfaces.nsIDOMEvent;
const nsIDOMHTMLDocument = Components.interfaces.nsIDOMHTMLDocument;
const nsIDOMNode = Components.interfaces.nsIDOMNode;
const nsIDOMNSHTMLElement = Components.interfaces.nsIDOMNSHTMLElement;
const nsIDOMWindow = Components.interfaces.nsIDOMWindow;
const nsIDOMXULElement = Components.interfaces.nsIDOMXULElement;
const nsIPropertyElement = Components.interfaces.nsIPropertyElement;
////////////////////////////////////////////////////////////////////////////////
// States
const STATE_BUSY = nsIAccessibleStates.STATE_BUSY;
const STATE_CHECKED = nsIAccessibleStates.STATE_CHECKED;
const STATE_CHECKABLE = nsIAccessibleStates.STATE_CHECKABLE;
const STATE_COLLAPSED = nsIAccessibleStates.STATE_COLLAPSED;
const STATE_EXPANDED = nsIAccessibleStates.STATE_EXPANDED;
const STATE_EXTSELECTABLE = nsIAccessibleStates.STATE_EXTSELECTABLE;
const STATE_FOCUSABLE = nsIAccessibleStates.STATE_FOCUSABLE;
const STATE_FOCUSED = nsIAccessibleStates.STATE_FOCUSED;
const STATE_HASPOPUP = nsIAccessibleStates.STATE_HASPOPUP;
const STATE_INVALID = nsIAccessibleStates.STATE_INVALID;
const STATE_LINKED = nsIAccessibleStates.STATE_LINKED;
const STATE_MIXED = nsIAccessibleStates.STATE_MIXED;
const STATE_MULTISELECTABLE = nsIAccessibleStates.STATE_MULTISELECTABLE;
const STATE_OFFSCREEN = nsIAccessibleStates.STATE_OFFSCREEN;
const STATE_PRESSED = nsIAccessibleStates.STATE_PRESSED;
const STATE_READONLY = nsIAccessibleStates.STATE_READONLY;
const STATE_REQUIRED = nsIAccessibleStates.STATE_REQUIRED;
const STATE_SELECTABLE = nsIAccessibleStates.STATE_SELECTABLE;
const STATE_SELECTED = nsIAccessibleStates.STATE_SELECTED;
const STATE_TRAVERSED = nsIAccessibleStates.STATE_TRAVERSED;
const STATE_UNAVAILABLE = nsIAccessibleStates.STATE_UNAVAILABLE;
const EXT_STATE_ACTIVE = nsIAccessibleStates.EXT_STATE_ACTIVE;
const EXT_STATE_DEFUNCT = nsIAccessibleStates.EXT_STATE_DEFUNCT;
const EXT_STATE_EDITABLE = nsIAccessibleStates.EXT_STATE_EDITABLE;
const EXT_STATE_EXPANDABLE = nsIAccessibleStates.EXT_STATE_EXPANDABLE;
const EXT_STATE_HORIZONTAL = nsIAccessibleStates.EXT_STATE_HORIZONTAL;
const EXT_STATE_MULTI_LINE = nsIAccessibleStates.EXT_STATE_MULTI_LINE;
const EXT_STATE_SINGLE_LINE = nsIAccessibleStates.EXT_STATE_SINGLE_LINE;
const EXT_STATE_SUPPORTS_AUTOCOMPLETION =
nsIAccessibleStates.EXT_STATE_SUPPORTS_AUTOCOMPLETION;
const EXT_STATE_VERTICAL = nsIAccessibleStates.EXT_STATE_VERTICAL;
////////////////////////////////////////////////////////////////////////////////
// OS detect
const MAC = (navigator.platform.indexOf("Mac") != -1)? true : false;
const LINUX = (navigator.platform.indexOf("Linux") != -1)? true : false;
const SOLARIS = (navigator.platform.indexOf("SunOS") != -1)? true : false;
const WIN = (navigator.platform.indexOf("Win") != -1)? true : false;
////////////////////////////////////////////////////////////////////////////////
// Accessible general
const kEmbedChar = String.fromCharCode(0xfffc);
/**
* nsIAccessibleRetrieval, initialized when test is loaded.
*/
var gAccRetrieval = null;
/**
* Invokes the given function when document is loaded and focused. Preferable
* to mochitests 'addLoadEvent' function -- additionally ensures state of the
* document accessible is not busy.
*
* @param aFunc the function to invoke
*/
function addA11yLoadEvent(aFunc)
{
function waitForDocLoad()
{
window.setTimeout(
function()
{
var accDoc = getAccessible(document);
var state = {};
accDoc.getState(state, {});
if (state.value & STATE_BUSY)
return waitForDocLoad();
window.setTimeout(aFunc, 150);
},
0
);
}
SimpleTest.waitForFocus(waitForDocLoad);
}
////////////////////////////////////////////////////////////////////////////////
// Helpers for getting DOM node/accessible
/**
* Return the DOM node by identifier (may be accessible, DOM node or ID).
*/
function getNode(aAccOrNodeOrID)
{
if (!aAccOrNodeOrID)
return null;
if (aAccOrNodeOrID instanceof nsIDOMNode)
return aAccOrNodeOrID;
if (aAccOrNodeOrID instanceof nsIAccessible) {
aAccOrNodeOrID.QueryInterface(nsIAccessNode);
return aAccOrNodeOrID.DOMNode;
}
node = document.getElementById(aAccOrNodeOrID);
if (!node) {
ok(false, "Can't get DOM element for " + aAccOrNodeOrID);
return null;
}
return node;
}
/**
* Constants indicates getAccessible doesn't fail if there is no accessible.
*/
const DONOTFAIL_IF_NO_ACC = 1;
/**
* Constants indicates getAccessible won't fail if accessible doesn't implement
* the requested interfaces.
*/
const DONOTFAIL_IF_NO_INTERFACE = 2;
/**
* Return accessible for the given identifier (may be ID attribute or DOM
* element or accessible object) or null.
*
* @param aAccOrElmOrID [in] identifier to get an accessible implementing
* the given interfaces
* @param aInterfaces [in, optional] the interface or an array interfaces
* to query it/them from obtained accessible
* @param aElmObj [out, optional] object to store DOM element which
* accessible is obtained for
* @param aDoNotFailIf [in, optional] no error for special cases (see
* constants above)
*/
function getAccessible(aAccOrElmOrID, aInterfaces, aElmObj, aDoNotFailIf)
{
if (!aAccOrElmOrID)
return null;
var elm = null;
if (aAccOrElmOrID instanceof nsIAccessible) {
aAccOrElmOrID.QueryInterface(nsIAccessNode);
elm = aAccOrElmOrID.DOMNode;
} else if (aAccOrElmOrID instanceof nsIDOMNode) {
elm = aAccOrElmOrID;
} else {
elm = document.getElementById(aAccOrElmOrID);
if (!elm) {
ok(false, "Can't get DOM element for " + aAccOrElmOrID);
return null;
}
}
if (aElmObj && (typeof aElmObj == "object"))
aElmObj.value = elm;
var acc = (aAccOrElmOrID instanceof nsIAccessible) ? aAccOrElmOrID : null;
if (!acc) {
try {
acc = gAccRetrieval.getAccessibleFor(elm);
} catch (e) {
}
if (!acc) {
if (!(aDoNotFailIf & DONOTFAIL_IF_NO_ACC))
ok(false, "Can't get accessible for " + aAccOrElmOrID);
return null;
}
}
acc.QueryInterface(nsIAccessNode);
if (!aInterfaces)
return acc;
if (aInterfaces instanceof Array) {
for (var index = 0; index < aInterfaces.length; index++) {
try {
acc.QueryInterface(aInterfaces[index]);
} catch (e) {
if (!(aDoNotFailIf & DONOTFAIL_IF_NO_INTERFACE))
ok(false, "Can't query " + aInterfaces[index] + " for " + aAccOrElmOrID);
return null;
}
}
return acc;
}
try {
acc.QueryInterface(aInterfaces);
} catch (e) {
ok(false, "Can't query " + aInterfaces + " for " + aAccOrElmOrID);
return null;
}
return acc;
}
/**
* Return true if the given identifier has an accessible, or exposes the wanted
* interfaces.
*/
function isAccessible(aAccOrElmOrID, aInterfaces)
{
return getAccessible(aAccOrElmOrID, aInterfaces, null,
DONOTFAIL_IF_NO_ACC | DONOTFAIL_IF_NO_INTERFACE) ?
true : false;
}
/**
* Return root accessible for the given identifier.
*/
function getRootAccessible(aAccOrElmOrID)
{
var acc = getAccessible(aAccOrElmOrID ? aAccOrElmOrID : document,
[nsIAccessNode]);
return acc ? acc.rootDocument.QueryInterface(nsIAccessible) : null;
}
/**
* Return application accessible.
*/
function getApplicationAccessible()
{
return gAccRetrieval.getApplicationAccessible().
QueryInterface(nsIAccessibleApplication);
}
/**
* Run through accessible tree of the given identifier so that we ensure
* accessible tree is created.
*/
function ensureAccessibleTree(aAccOrElmOrID)
{
var acc = getAccessible(aAccOrElmOrID);
if (!acc)
return;
var child = acc.firstChild;
while (child) {
ensureAccessibleTree(child);
try {
child = child.nextSibling;
} catch (e) {
child = null;
}
}
}
/**
* Compare expected and actual accessibles trees.
*
* @param aAccOrElmOrID [in] accessible identifier
* @param aAccTree [in] JS object, each field corresponds to property of
* accessible object. Additionally special properties
* are presented:
* children - an array of JS objects representing
* children of accessible
* states - an object having states and extraStates
* fields
*/
function testAccessibleTree(aAccOrElmOrID, aAccTree)
{
var acc = getAccessible(aAccOrElmOrID);
if (!acc)
return;
for (var prop in aAccTree) {
var msg = "Wrong value of property '" + prop + "' for " + prettyName(acc) + ".";
if (prop == "role") {
is(roleToString(acc[prop]), roleToString(aAccTree[prop]), msg);
} else if (prop == "states") {
var statesObj = aAccTree[prop];
testStates(acc, statesObj.states, statesObj.extraStates,
statesObj.absentStates, statesObj.absentExtraStates);
} else if (prop != "children") {
is(acc[prop], aAccTree[prop], msg);
}
}
if ("children" in aAccTree && aAccTree["children"] instanceof Array) {
var children = acc.children;
is(children.length, aAccTree.children.length,
"Different amount of expected children of " + prettyName(acc) + ".");
if (aAccTree.children.length == children.length) {
var childCount = children.length;
// nsIAccessible::firstChild
var expectedFirstChild = childCount > 0 ?
children.queryElementAt(0, nsIAccessible) : null;
var firstChild = null;
try { firstChild = acc.firstChild; } catch (e) {}
is(firstChild, expectedFirstChild,
"Wrong first child of " + prettyName(acc));
// nsIAccessible::lastChild
var expectedLastChild = childCount > 0 ?
children.queryElementAt(childCount - 1, nsIAccessible) : null;
var lastChild = null;
try { lastChild = acc.lastChild; } catch (e) {}
is(lastChild, expectedLastChild,
"Wrong last child of " + prettyName(acc));
for (var i = 0; i < children.length; i++) {
var child = children.queryElementAt(i, nsIAccessible);
// nsIAccessible::parent
var parent = null;
try { parent = child.parent; } catch (e) {}
is(parent, acc, "Wrong parent of " + prettyName(child));
// nsIAccessible::indexInParent
var indexInParent = -1;
try { indexInParent = child.indexInParent; } catch(e) {}
is(indexInParent, i,
"Wrong index in parent of " + prettyName(child));
// nsIAccessible::nextSibling
var expectedNextSibling = (i < childCount - 1) ?
children.queryElementAt(i + 1, nsIAccessible) : null;
var nextSibling = null;
try { nextSibling = child.nextSibling; } catch (e) {}
is(nextSibling, expectedNextSibling,
"Wrong next sibling of " + prettyName(child));
// nsIAccessible::previousSibling
var expectedPrevSibling = (i > 0) ?
children.queryElementAt(i - 1, nsIAccessible) : null;
var prevSibling = null;
try { prevSibling = child.previousSibling; } catch (e) {}
is(prevSibling, expectedPrevSibling,
"Wrong previous sibling of " + prettyName(child));
// Go down through subtree
testAccessibleTree(child, aAccTree.children[i]);
}
}
}
}
/**
* Return true if accessible for the given node is in cache.
*/
function isAccessibleInCache(aNodeOrId)
{
var node = getNode(aNodeOrId);
return gAccRetrieval.getAccessibleFromCache(node) ? true : false;
}
/**
* Test accessible tree for defunct accessible.
*
* @param aAcc [in] the defunct accessible
* @param aNodeOrId [in] the DOM node identifier for the defunct accessible
*/
function testDefunctAccessible(aAcc, aNodeOrId)
{
if (aNodeOrId)
ok(!isAccessible(aNodeOrId),
"Accessible for " + aNodeOrId + " wasn't properly shut down!");
var msg = " doesn't fail for shut down accessible " + prettyName(aNodeOrId) + "!";
// firstChild
var success = false;
try {
aAcc.firstChild;
} catch (e) {
success = (e.result == Components.results.NS_ERROR_FAILURE)
}
ok(success, "firstChild" + msg);
// lastChild
success = false;
try {
aAcc.lastChild;
} catch (e) {
success = (e.result == Components.results.NS_ERROR_FAILURE)
}
ok(success, "lastChild" + msg);
// childCount
success = false;
try {
aAcc.childCount;
} catch (e) {
success = (e.result == Components.results.NS_ERROR_FAILURE)
}
ok(success, "childCount" + msg);
// children
success = false;
try {
aAcc.children;
} catch (e) {
success = (e.result == Components.results.NS_ERROR_FAILURE)
}
ok(success, "children" + msg);
// nextSibling
success = false;
try {
aAcc.nextSibling;
} catch (e) {
success = (e.result == Components.results.NS_ERROR_FAILURE);
}
ok(success, "nextSibling" + msg);
// previousSibling
success = false;
try {
aAcc.previousSibling;
} catch (e) {
success = (e.result == Components.results.NS_ERROR_FAILURE);
}
ok(success, "previousSibling" + msg);
// parent
success = false;
try {
aAcc.parent;
} catch (e) {
success = (e.result == Components.results.NS_ERROR_FAILURE);
}
ok(success, "parent" + msg);
}
/**
* Convert role to human readable string.
*/
function roleToString(aRole)
{
return gAccRetrieval.getStringRole(aRole);
}
/**
* Convert states to human readable string.
*/
function statesToString(aStates, aExtraStates)
{
var list = gAccRetrieval.getStringStates(aStates, aExtraStates);
var str = "";
for (var index = 0; index < list.length - 1; index++)
str += list.item(index) + ", ";
if (list.length != 0)
str += list.item(index)
return str;
}
/**
* Convert event type to human readable string.
*/
function eventTypeToString(aEventType)
{
return gAccRetrieval.getStringEventType(aEventType);
}
/**
* Convert relation type to human readable string.
*/
function relationTypeToString(aRelationType)
{
return gAccRetrieval.getStringRelationType(aRelationType);
}
/**
* Return pretty name for identifier, it may be ID, DOM node or accessible.
*/
function prettyName(aIdentifier)
{
if (aIdentifier instanceof nsIAccessible) {
var acc = getAccessible(aIdentifier, [nsIAccessNode]);
var msg = "[" + getNodePrettyName(acc.DOMNode);
try {
msg += ", role: " + roleToString(acc.role);
if (acc.name)
msg += ", name: '" + acc.name + "'";
} catch (e) {
msg += "defunct";
}
msg += "]";
return msg;
}
if (aIdentifier instanceof nsIDOMNode)
return getNodePrettyName(aIdentifier);
return " '" + aIdentifier + "' ";
}
////////////////////////////////////////////////////////////////////////////////
// Private
////////////////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////////////
// Accessible general
function initialize()
{
gAccRetrieval = Components.classes["@mozilla.org/accessibleRetrieval;1"].
getService(nsIAccessibleRetrieval);
}
addLoadEvent(initialize);
function getNodePrettyName(aNode)
{
try {
if (aNode.nodeType == nsIDOMNode.ELEMENT_NODE && aNode.hasAttribute("id"))
return " '" + aNode.getAttribute("id") + "' ";
if (aNode.nodeType == nsIDOMNode.DOCUMENT_NODE)
return " 'document node' ";
return " '" + aNode.localName + " node' ";
} catch (e) {
return "no node info";
}
}