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<!DOCTYPE html>
<html>
<!--
Copyright 2008 The Closure Library Authors. All Rights Reserved.
Use of this source code is governed by the Apache License, Version 2.0.
See the COPYING file for details.
-->
<head>
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<title>goog.dom.TextRangeIterator Tests</title>
<script src="../base.js"></script>
<script>
goog.require('goog.dom');
goog.require('goog.dom.TagName');
goog.require('goog.dom.TextRangeIterator');
goog.require('goog.testing.dom');
goog.require('goog.testing.jsunit');
</script>
</head>
<body>
<!--
The next line goes past 80 characters to avoid ambiguity with
newlines as text nodes
-->
<div id="test"><a href="#" id="a1">T<b id="b1">e</b>xt</a><span id="span1"></span><p id="p1">Text</p></div>
<ul id="test2">foo<br>bar</ul>
<script>
var test = goog.dom.getElement('test');
var test2 = goog.dom.getElement('test2');
function testBasic() {
goog.testing.dom.assertNodesMatch(
new goog.dom.TextRangeIterator(test, 0, test, 2),
['#a1', 'T', '#b1', 'e', '#b1', 'xt', '#a1', '#span1',
'#span1', '#p1']);
}
function testAdjustStart() {
var iterator = new goog.dom.TextRangeIterator(test, 0, test, 2);
iterator.setStartNode(goog.dom.getElement('span1'));
goog.testing.dom.assertNodesMatch(iterator,
['#span1', '#span1', '#p1']);
}
function testAdjustEnd() {
var iterator = new goog.dom.TextRangeIterator(test, 0, test, 2);
iterator.setEndNode(goog.dom.getElement('span1'));
goog.testing.dom.assertNodesMatch(iterator,
['#a1', 'T', '#b1', 'e', '#b1', 'xt', '#a1', '#span1']);
}
function testOffsets() {
var iterator = new goog.dom.TextRangeIterator(test2.firstChild, 1,
test2.lastChild, 2);
// foo
var node = iterator.next();
assertEquals('Should have start offset at iteration step 1', 1,
iterator.getStartTextOffset());
assertEquals('Should not have end offset at iteration step 1',
node.nodeValue.length, iterator.getEndTextOffset());
// <br>
node = iterator.next();
assertEquals('Should not have start offset at iteration step 2', -1,
iterator.getStartTextOffset());
assertEquals('Should not have end offset at iteration step 2', -1,
iterator.getEndTextOffset());
// </br>
node = iterator.next();
assertEquals('Should not have start offset at iteration step 3', -1,
iterator.getStartTextOffset());
assertEquals('Should not have end offset at iteration step 3', -1,
iterator.getEndTextOffset());
// bar
node = iterator.next();
assertEquals('Should not have start offset at iteration step 4', 0,
iterator.getStartTextOffset());
assertEquals('Should have end offset at iteration step 4', 2,
iterator.getEndTextOffset());
}
function testSingleNodeOffsets() {
var iterator = new goog.dom.TextRangeIterator(test2.firstChild, 1,
test2.firstChild, 2);
iterator.next();
assertEquals('Should have start offset', 1, iterator.getStartTextOffset());
assertEquals('Should have end offset', 2, iterator.getEndTextOffset());
}
function testEndNodeOffsetAtEnd() {
var iterator = new goog.dom.TextRangeIterator(
goog.dom.getElement('b1').firstChild, 0, goog.dom.getElement('b1'), 1);
goog.testing.dom.assertNodesMatch(iterator, ['e', '#b1']);
}
function testSkipTagDoesNotSkipEnd() {
// Iterate over 'Tex'.
var iterator = new goog.dom.TextRangeIterator(
test.firstChild.firstChild, 0,
test.firstChild.lastChild, 1);
var node = iterator.next();
assertEquals('T', node.nodeValue);
node = iterator.next();
assertEquals(goog.dom.TagName.B, node.tagName);
iterator.skipTag();
node = iterator.next();
assertEquals('xt', node.nodeValue);
}
function testSkipTagSkipsEnd() {
// Iterate over 'Te'.
var iterator = new goog.dom.TextRangeIterator(
test.firstChild.firstChild, 0,
test.getElementsByTagName(goog.dom.TagName.B)[0].firstChild, 1);
var node = iterator.next();
assertEquals('T', node.nodeValue);
node = iterator.next();
assertEquals(goog.dom.TagName.B, node.tagName);
var ex = assertThrows('Should stop iteration when skipping B', function() {
iterator.skipTag();
});
assertEquals(goog.iter.StopIteration, ex);
}
</script>
</body>
</html>
|
