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<title>Test: nsIAccessibleText getText* functions at caret offset</title>
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//gA11yEventDumpToConsole = true; // debugging
function traverseTextByLines(aQueue, aID, aLines)
{
var wholeText = "";
for (var i = 0; i < aLines.length ; i++)
wholeText += aLines[i][0] + aLines[i][1];
var baseInvokerFunc = synthClick;
var charIter = new charIterator(wholeText, aLines);
//charIter.debugOffset = 10; // enable to run tests at given offset only
while (charIter.next()) {
aQueue.push(new tmpl_moveTo(aID, baseInvokerFunc, wholeText, charIter));
baseInvokerFunc = synthRightKey;
}
}
/**
* Used to get test list for each traversed character.
*/
function charIterator(aWholeText, aLines)
{
this.next = function charIterator_next()
{
// Don't increment offset if we are at end of the wrapped line
// (offset is shared between end of this line and start of next line).
if (this.mAtWrappedLineEnd) {
this.mAtWrappedLineEnd = false;
this.mLine = this.mLine.nextLine;
return true;
}
this.mOffset++;
if (this.mOffset > aWholeText.length)
return false;
var nextLine = this.mLine.nextLine;
if (!nextLine.isFakeLine() && this.mOffset == nextLine.start) {
if (nextLine.start == this.mLine.end)
this.mAtWrappedLineEnd = true;
else
this.mLine = nextLine;
}
return true;
}
Object.defineProperty(this, "offset", { get: function()
{ return this.mOffset; }
});
Object.defineProperty(this, "offsetDescr", { get: function()
{
return this.mOffset + " offset (" + this.mLine.number + " line, " +
(this.mOffset - this.mLine.start) + " offset on the line)";
}
});
Object.defineProperty(this, "tests", { get: function()
{
// Line boundary tests.
var cLine = this.mLine;
var pLine = cLine.prevLine;
var ppLine = pLine.prevLine;
var nLine = cLine.nextLine;
var nnLine = nLine.nextLine;
var lineTests = [
[ testTextBeforeOffset, BOUNDARY_LINE_START, pLine.start, cLine.start],
[ testTextBeforeOffset, BOUNDARY_LINE_END, ppLine.end, pLine.end],
[ testTextAtOffset, BOUNDARY_LINE_START, cLine.start, nLine.start],
[ testTextAtOffset, BOUNDARY_LINE_END, pLine.end, cLine.end],
[ testTextAfterOffset, BOUNDARY_LINE_START, nLine.start, nnLine.start],
[ testTextAfterOffset, BOUNDARY_LINE_END, cLine.end, nLine.end]
];
// Word boundary tests.
var cWord = this.mLine.firstWord;
var nWord = cWord.nextWord, pWord = cWord.prevWord;
// The current word is a farthest word starting at or after the offset.
if (this.mOffset >= nWord.start) {
while (this.mOffset >= nWord.start && !this.mLine.isLastWord(cWord)) {
cWord = nWord;
nWord = nWord.nextWord;
}
pWord = cWord.prevWord;
} else if (this.mOffset < cWord.start) {
while (this.mOffset < cWord.start) {
cWord = pWord;
pWord = pWord.prevWord;
}
nWord = cWord.nextWord;
}
var nnWord = nWord.nextWord, ppWord = pWord.prevWord;
var isAfterWordEnd =
this.mOffset > cWord.end || cWord.line != this.mLine;
var isAtOrAfterWordEnd = (this.mOffset >= cWord.end);
var useNextWordForAtWordEnd =
isAtOrAfterWordEnd && this.mOffset != aWholeText.length;
var wordTests = [
[ testTextBeforeOffset, BOUNDARY_WORD_START,
pWord.start, cWord.start ],
[ testTextBeforeOffset, BOUNDARY_WORD_END,
(isAfterWordEnd ? pWord : ppWord).end,
(isAfterWordEnd ? cWord : pWord).end ],
[ testTextAtOffset, BOUNDARY_WORD_START,
cWord.start, nWord.start ],
[ testTextAtOffset, BOUNDARY_WORD_END,
(useNextWordForAtWordEnd ? cWord : pWord).end,
(useNextWordForAtWordEnd ? nWord : cWord).end ],
[ testTextAfterOffset, BOUNDARY_WORD_START,
nWord.start, nnWord.start ],
[ testTextAfterOffset, BOUNDARY_WORD_END,
(isAfterWordEnd ? nWord : cWord).end,
(isAfterWordEnd ? nnWord : nWord).end ]
];
// Character boundary tests.
var prevOffset = this.offset > 1 ? this.offset - 1 : 0;
var nextOffset = this.offset >= aWholeText.length ?
this.offset : this.offset + 1;
var nextAfterNextOffset = nextOffset >= aWholeText.length ?
nextOffset : nextOffset + 1;
var charTests = [
[ testTextBeforeOffset, BOUNDARY_CHAR,
prevOffset, this.offset ],
[ testTextAtOffset, BOUNDARY_CHAR,
this.offset,
this.mAtWrappedLineEnd ? this.offset : nextOffset ],
[ testTextAfterOffset, BOUNDARY_CHAR,
this.mAtWrappedLineEnd ? this.offset : nextOffset,
this.mAtWrappedLineEnd ? nextOffset : nextAfterNextOffset ]
];
return lineTests.concat(wordTests.concat(charTests));
}
});
Object.defineProperty(this, "failures", { get: function()
{
if (this.mOffset == this.mLine.start)
return this.mLine.lineStartFailures;
if (this.mOffset == this.mLine.end)
return this.mLine.lineEndFailures;
return [];
}
});
this.mOffset = -1;
this.mLine = new line(aWholeText, aLines, 0);
this.mAtWrappedLineEnd = false;
this.mWord = this.mLine.firstWord;
}
/**
* A line object. Allows to navigate by lines and by words.
*/
function line(aWholeText, aLines, aIndex)
{
Object.defineProperty(this, "prevLine", { get: function()
{
return new line(aWholeText, aLines, aIndex - 1);
}
});
Object.defineProperty(this, "nextLine", { get: function()
{
return new line(aWholeText, aLines, aIndex + 1);
}
});
Object.defineProperty(this, "start", { get: function()
{
if (aIndex < 0)
return 0;
if (aIndex >= aLines.length)
return aWholeText.length;
return aLines[aIndex][2];
}
});
Object.defineProperty(this, "end", { get: function()
{
if (aIndex < 0)
return 0;
if (aIndex >= aLines.length)
return aWholeText.length;
return aLines[aIndex][3];
}
});
Object.defineProperty(this, "number", { get: function()
{ return aIndex; }
});
Object.defineProperty(this, "wholeText", { get: function()
{ return aWholeText; }
});
this.isFakeLine = function line_isFakeLine()
{
return aIndex < 0 || aIndex >= aLines.length;
}
Object.defineProperty(this, "lastWord", { get: function()
{
if (aIndex < 0)
return new word(this, [], -1);
if (aIndex >= aLines.length)
return new word(this, [], 0);
var words = aLines[aIndex][4].words;
return new word(this, words, words.length - 2);
}
});
Object.defineProperty(this, "firstWord", { get: function()
{
if (aIndex < 0)
return new word(this, [], -1);
if (aIndex >= aLines.length)
return new word(this, [], 0);
var words = aLines[aIndex][4].words;
return new word(this, words, 0);
}
});
this.isLastWord = function line_isLastWord(aWord)
{
var lastWord = this.lastWord;
return lastWord.start == aWord.start && lastWord.end == aWord.end;
}
Object.defineProperty(this, "lineStartFailures", { get: function()
{
if (aIndex < 0 || aIndex >= aLines.length)
return [];
return aLines[aIndex][4].lsf || [];
}
});
Object.defineProperty(this, "lineEndFailures", { get: function()
{
if (aIndex < 0 || aIndex >= aLines.length)
return [];
return aLines[aIndex][4].lef || [];
}
});
}
/**
* A word object. Allows to navigate by words.
*/
function word(aLine, aWords, aIndex)
{
Object.defineProperty(this, "prevWord", { get: function()
{
if (aIndex >= 2)
return new word(aLine, aWords, aIndex - 2);
var prevLineLastWord = aLine.prevLine.lastWord;
if (this.start == prevLineLastWord.start && !this.isFakeStartWord())
return prevLineLastWord.prevWord;
return prevLineLastWord;
}
});
Object.defineProperty(this, "nextWord", { get: function()
{
if (aIndex + 2 < aWords.length)
return new word(aLine, aWords, aIndex + 2);
var nextLineFirstWord = aLine.nextLine.firstWord;
if (this.end == nextLineFirstWord.end && !this.isFakeEndWord())
return nextLineFirstWord.nextWord;
return nextLineFirstWord;
}
});
Object.defineProperty(this, "line", { get: function() { return aLine; } });
Object.defineProperty(this, "start", { get: function()
{
if (this.isFakeStartWord())
return 0;
if (this.isFakeEndWord())
return aLine.end;
return aWords[aIndex];
}
});
Object.defineProperty(this, "end", { get: function()
{
if (this.isFakeStartWord())
return 0;
return this.isFakeEndWord() ? aLine.end : aWords[aIndex + 1];
}
});
this.toString = function word_toString()
{
var start = this.start, end = this.end;
return "'" + aLine.wholeText.substring(start, end) +
"' at [" + start + ", " + end + "]";
}
this.isFakeStartWord = function() { return aIndex < 0; }
this.isFakeEndWord = function() { return aIndex >= aWords.length; }
}
/**
* A template invoker to move through the text.
*/
function tmpl_moveTo(aID, aInvokerFunc, aWholeText, aCharIter)
{
this.offset = aCharIter.offset;
var checker = new caretMoveChecker(this.offset, aID);
this.__proto__ = new (aInvokerFunc)(aID, checker);
this.finalCheck = function genericMoveTo_finalCheck()
{
if (this.noTests())
return;
for (var i = 0; i < this.tests.length; i++) {
var func = this.tests[i][0];
var boundary = this.tests[i][1];
var startOffset = this.tests[i][2];
var endOffset = this.tests[i][3];
var text = aWholeText.substring(startOffset, endOffset);
var isOk1 = kOk, isOk2 = kOk, isOk3 = kOk;
for (var fIdx = 0; fIdx < this.failures.length; fIdx++) {
var failure = this.failures[fIdx];
if (func.name.indexOf(failure[0]) != -1 && boundary == failure[1]) {
isOk1 = failure[2];
isOk2 = failure[3];
isOk3 = failure[4];
}
}
func.call(null, kCaretOffset, boundary, text, startOffset, endOffset,
aID, isOk1, isOk2, isOk3);
}
}
this.getID = function genericMoveTo_getID()
{
return "move to " + this.offsetDescr;
}
this.noTests = function tmpl_moveTo_noTests()
{
return ("debugOffset" in aCharIter) &&
(aCharIter.debugOffset != this.offset);
}
this.offsetDescr = aCharIter.offsetDescr;
this.tests = this.noTests() ? null : aCharIter.tests;
this.failures = aCharIter.failures;
}
var gQueue = null;
function doTest()
{
gQueue = new eventQueue();
// __a__w__o__r__d__\n
// 0 1 2 3 4 5
// __t__w__o__ (soft line break)
// 6 7 8 9
// __w__o__r__d__s
// 10 11 12 13 14 15
traverseTextByLines(gQueue, "textarea",
[ [ "aword", "\n", 0, 5, { words: [ 0, 5 ] } ],
[ "two ", "", 6, 10, { words: [ 6, 9 ] } ],
[ "words", "", 10, 15, { words: [ 10, 15 ] } ]
] );
var line4 = [ // "riend "
[ "TextBeforeOffset", BOUNDARY_WORD_END, kTodo, kTodo, kTodo ],
[ "TextAfterOffset", BOUNDARY_WORD_END, kTodo, kTodo, kTodo ]
];
traverseTextByLines(gQueue, "ta_wrapped",
[ [ "hi ", "", 0, 3, { words: [ 0, 2 ] } ],
[ "hello ", "", 3, 9, { words: [ 3, 8 ] } ],
[ "my ", "", 9, 12, { words: [ 9, 11 ] } ],
[ "longf", "", 12, 17, { words: [ 12, 17 ] } ],
[ "riend ", "", 17, 23, { words: [ 17, 22 ], lsf: line4 } ],
[ "t sq ", "", 23, 28, { words: [ 23, 24, 25, 27 ] } ],
[ "t", "", 28, 29, { words: [ 28, 29 ] } ]
] );
gQueue.invoke(); // will call SimpleTest.finish();
}
SimpleTest.waitForExplicitFinish();
addA11yLoadEvent(doTest);
</script>
</head>
<body>
<a target="_blank"
title="nsIAccessibleText getText related functions tests at caret offset"
href="https://bugzilla.mozilla.org/show_bug.cgi?id=852021">
Bug 852021
</a>
<p id="display"></p>
<div id="content" style="display: none"></div>
<pre id="test">
<textarea id="textarea" cols="5">aword
two words</textarea>
<textarea id="ta_wrapped" cols="5">hi hello my longfriend t sq t</textarea>
</pre>
</body>
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