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XPath validators for 'extendhinttags', 'nextpattern', 'prevpattern'.

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This commit is contained in:
Kris Maglione
2010-09-28 16:31:00 -04:00
parent 84ae493dfb
commit 50c1c568a2
5 changed files with 53 additions and 42 deletions
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54
common/modules/util.jsm
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@@ -275,34 +275,36 @@ const Util = Module("Util", {
* @param {boolean} asIterator Whether to return the results as an
* XPath iterator.
*/
evaluateXPath: function (expression, doc, elem, asIterator) {
if (!doc)
doc = util.activeWindow.content.document;
if (!elem)
elem = doc;
if (isArray(expression))
expression = util.makeXPath(expression);
evaluateXPath: (function () {
function evaluateXPath(expression, doc, elem, asIterator) {
if (!doc)
doc = util.activeWindow.content.document;
if (!elem)
elem = doc;
if (isArray(expression))
expression = util.makeXPath(expression);
let result = doc.evaluate(expression, elem,
function lookupNamespaceURI(prefix) {
return {
xul: XUL.uri,
xhtml: XHTML.uri,
xhtml2: "http://www.w3.org/2002/06/xhtml2",
dactyl: NS.uri
}[prefix] || null;
},
asIterator ? Ci.nsIDOMXPathResult.ORDERED_NODE_ITERATOR_TYPE : Ci.nsIDOMXPathResult.ORDERED_NODE_SNAPSHOT_TYPE,
null
);
let result = doc.evaluate(expression, elem,
evaluateXPath.resolver,
asIterator ? Ci.nsIDOMXPathResult.ORDERED_NODE_ITERATOR_TYPE : Ci.nsIDOMXPathResult.ORDERED_NODE_SNAPSHOT_TYPE,
null
);
return Object.create(result, {
__iterator__: {
value: asIterator ? function () { let elem; while ((elem = this.iterateNext())) yield elem; }
: function () { for (let i = 0; i < this.snapshotLength; i++) yield this.snapshotItem(i); }
}
});
},
return Object.create(result, {
__iterator__: {
value: asIterator ? function () { let elem; while ((elem = this.iterateNext())) yield elem; }
: function () { for (let i = 0; i < this.snapshotLength; i++) yield this.snapshotItem(i); }
}
});
}
evaluateXPath.resolver = function lookupNamespaceURI(prefix) ({
xul: XUL.uri,
xhtml: XHTML.uri,
xhtml2: "http://www.w3.org/2002/06/xhtml2",
dactyl: NS.uri
}[prefix] || null);
return evaluateXPath;
})(),
extend: function extend(dest) {
Array.slice(arguments, 1).filter(util.identity).forEach(function (src) {