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var utils = {
/*
* Takes a dot-notation object string and call the function
* that it points to with the correct value for 'this'.
*/
invokeCommandString: function(str, argArray) {
var components = str.split('.');
var obj = window;
for (var i = 0; i < components.length - 1; i++)
obj = obj[components[i]];
var func = obj[components.pop()];
return func.apply(obj, argArray);
},
/*
* Takes an array of XPath selectors, adds the necessary namespaces (currently only XHTML), and applies them
* to the document root. The namespaceResolver in evaluateXPath should be kept in sync with the namespaces
* here.
*/
makeXPath: function(elementArray) {
var xpath = [];
for (var i in elementArray)
xpath.push("//" + elementArray[i], "//xhtml:" + elementArray[i]);
return xpath.join(" | ");
},
evaluateXPath: function(xpath, resultType) {
function namespaceResolver(namespace) {
return namespace == "xhtml" ? "http://www.w3.org/1999/xhtml" : null;
}
return document.evaluate(xpath, document.documentElement, namespaceResolver, resultType, null);
},
};
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