/* * This is code is also distributed under MIT license for use * with jQuery and prototype JavaScript libraries. */ /** * @class Ext.DomQuery Provides high performance selector/xpath processing by compiling queries into reusable functions. New pseudo classes and matchers can be plugged. It works on HTML and XML documents (if a content node is passed in). <p> DomQuery supports most of the <a href="http://www.w3.org/TR/2005/WD-css3-selectors-20051215/#selectors">CSS3 selectors spec</a>, along with some custom selectors and basic XPath.</p> <p> All selectors, attribute filters and pseudos below can be combined infinitely in any order. For example "div.foo:nth-child(odd)[@foo=bar].bar:first" would be a perfectly valid selector. Node filters are processed in the order in which they appear, which allows you to optimize your queries for your document structure. </p> <h4>Element Selectors:</h4> <ul class="list"> <li> <b>*</b> any element</li> <li> <b>E</b> an element with the tag E</li> <li> <b>E F</b> All descendent elements of E that have the tag F</li> <li> <b>E > F</b> or <b>E/F</b> all direct children elements of E that have the tag F</li> <li> <b>E + F</b> all elements with the tag F that are immediately preceded by an element with the tag E</li> <li> <b>E ~ F</b> all elements with the tag F that are preceded by a sibling element with the tag E</li> </ul> <h4>Attribute Selectors:</h4> <p>The use of @ and quotes are optional. For example, div[@foo='bar'] is also a valid attribute selector.</p> <ul class="list"> <li> <b>E[foo]</b> has an attribute "foo"</li> <li> <b>E[foo=bar]</b> has an attribute "foo" that equals "bar"</li> <li> <b>E[foo^=bar]</b> has an attribute "foo" that starts with "bar"</li> <li> <b>E[foo$=bar]</b> has an attribute "foo" that ends with "bar"</li> <li> <b>E[foo*=bar]</b> has an attribute "foo" that contains the substring "bar"</li> <li> <b>E[foo%=2]</b> has an attribute "foo" that is evenly divisible by 2</li> <li> <b>E[foo!=bar]</b> attribute "foo" does not equal "bar"</li> </ul> <h4>Pseudo Classes:</h4> <ul class="list"> <li> <b>E:first-child</b> E is the first child of its parent</li> <li> <b>E:last-child</b> E is the last child of its parent</li> <li> <b>E:nth-child(<i>n</i>)</b> E is the <i>n</i>th child of its parent (1 based as per the spec)</li> <li> <b>E:nth-child(odd)</b> E is an odd child of its parent</li> <li> <b>E:nth-child(even)</b> E is an even child of its parent</li> <li> <b>E:only-child</b> E is the only child of its parent</li> <li> <b>E:checked</b> E is an element that is has a checked attribute that is true (e.g. a radio or checkbox) </li> <li> <b>E:first</b> the first E in the resultset</li> <li> <b>E:last</b> the last E in the resultset</li> <li> <b>E:nth(<i>n</i>)</b> the <i>n</i>th E in the resultset (1 based)</li> <li> <b>E:odd</b> shortcut for :nth-child(odd)</li> <li> <b>E:even</b> shortcut for :nth-child(even)</li> <li> <b>E:contains(foo)</b> E's innerHTML contains the substring "foo"</li> <li> <b>E:nodeValue(foo)</b> E contains a textNode with a nodeValue that equals "foo"</li> <li> <b>E:not(S)</b> an E element that does not match simple selector S</li> <li> <b>E:has(S)</b> an E element that has a descendent that matches simple selector S</li> <li> <b>E:next(S)</b> an E element whose next sibling matches simple selector S</li> <li> <b>E:prev(S)</b> an E element whose previous sibling matches simple selector S</li> <li> <b>E:any(S1|S2|S2)</b> an E element which matches any of the simple selectors S1, S2 or S3//\\</li> </ul> <h4>CSS Value Selectors:</h4> <ul class="list"> <li> <b>E{display=none}</b> css value "display" that equals "none"</li> <li> <b>E{display^=none}</b> css value "display" that starts with "none"</li> <li> <b>E{display$=none}</b> css value "display" that ends with "none"</li> <li> <b>E{display*=none}</b> css value "display" that contains the substring "none"</li> <li> <b>E{display%=2}</b> css value "display" that is evenly divisible by 2</li> <li> <b>E{display!=none}</b> css value "display" that does not equal "none"</li> </ul> * @singleton */ Ext.DomQuery = function(){ var cache = {}, simpleCache = {}, valueCache = {}, nonSpace = /\S/, trimRe = /^\s+|\s+$/g, tplRe = /\{(\d+)\}/g, modeRe = /^(\s?[\/>+~]\s?|\s|$)/, tagTokenRe = /^(#)?([\w\-\*]+)/, nthRe = /(\d*)n\+?(\d*)/, nthRe2 = /\D/, // This is for IE MSXML which does not support expandos. // IE runs the same speed using setAttribute, however FF slows way down // and Safari completely fails so they need to continue to use expandos. isIE = window.ActiveXObject ? true : false, key = 30803; // this eval is stop the compressor from // renaming the variable to something shorter eval("var batch = 30803;"); // Retrieve the child node from a particular // parent at the specified index. function child(parent, index){ var i = 0, n = parent.firstChild; while(n){ if(n.nodeType == 1){ if(++i == index){ return n; } } n = n.nextSibling; } return null; } // retrieve the next element node function next(n){ while((n = n.nextSibling) && n.nodeType != 1); return n; } // retrieve the previous element node function prev(n){ while((n = n.previousSibling) && n.nodeType != 1); return n; } // Mark each child node with a nodeIndex skipping and // removing empty text nodes. function children(parent){ var n = parent.firstChild, nodeIndex = -1, nextNode; while(n){ nextNode = n.nextSibling; // clean worthless empty nodes. if(n.nodeType == 3 && !nonSpace.test(n.nodeValue)){ parent.removeChild(n); }else{ // add an expando nodeIndex n.nodeIndex = ++nodeIndex; } n = nextNode; } return this; } // nodeSet - array of nodes // cls - CSS Class function byClassName(nodeSet, cls){ if(!cls){ return nodeSet; } var result = [], ri = -1; for(var i = 0, ci; ci = nodeSet[i]; i++){ if((' '+ci.className+' ').indexOf(cls) != -1){ result[++ri] = ci; } } return result; }; function attrValue(n, attr){ // if its an array, use the first node. if(!n.tagName && typeof n.length != "undefined"){ n = n[0]; } if(!n){ return null; } if(attr == "for"){ return n.htmlFor; } if(attr == "class" || attr == "className"){ return n.className; } return n.getAttribute(attr) || n[attr]; }; // ns - nodes // mode - false, /, >, +, ~ // tagName - defaults to "*" function getNodes(ns, mode, tagName){ var result = [], ri = -1, cs; if(!ns){ return result; } tagName = tagName || "*"; // convert to array if(typeof ns.getElementsByTagName != "undefined"){ ns = [ns]; } // no mode specified, grab all elements by tagName // at any depth if(!mode){ for(var i = 0, ni; ni = ns[i]; i++){ cs = ni.getElementsByTagName(tagName); for(var j = 0, ci; ci = cs[j]; j++){ result[++ri] = ci; } } // Direct Child mode (/ or >) // E > F or E/F all direct children elements of E that have the tag } else if(mode == "/" || mode == ">"){ var utag = tagName.toUpperCase(); for(var i = 0, ni, cn; ni = ns[i]; i++){ cn = ni.childNodes; for(var j = 0, cj; cj = cn[j]; j++){ if(cj.nodeName == utag || cj.nodeName == tagName || tagName == '*'){ result[++ri] = cj; } } } // Immediately Preceding mode (+) // E + F all elements with the tag F that are immediately preceded by an element with the tag E }else if(mode == "+"){ var utag = tagName.toUpperCase(); for(var i = 0, n; n = ns[i]; i++){ while((n = n.nextSibling) && n.nodeType != 1); if(n && (n.nodeName == utag || n.nodeName == tagName || tagName == '*')){ result[++ri] = n; } } // Sibling mode (~) // E ~ F all elements with the tag F that are preceded by a sibling element with the tag E }else if(mode == "~"){ var utag = tagName.toUpperCase(); for(var i = 0, n; n = ns[i]; i++){ while((n = n.nextSibling)){ if (n.nodeName == utag || n.nodeName == tagName || tagName == '*'){ result[++ri] = n; } } } } return result; } function concat(a, b){ if(b.slice){ return a.concat(b); } for(var i = 0, l = b.length; i < l; i++){ a[a.length] = b[i]; } return a; } function byTag(cs, tagName){ if(cs.tagName || cs == document){ cs = [cs]; } if(!tagName){ return cs; } var result = [], ri = -1; tagName = tagName.toLowerCase(); for(var i = 0, ci; ci = cs[i]; i++){ if(ci.nodeType == 1 && ci.tagName.toLowerCase() == tagName){ result[++ri] = ci; } } return result; } function byId(cs, id){ if(cs.tagName || cs == document){ cs = [cs]; } if(!id){ return cs; } var result = [], ri = -1; for(var i = 0, ci; ci = cs[i]; i++){ if(ci && ci.id == id){ result[++ri] = ci; return result; } } return result; } // operators are =, !=, ^=, $=, *=, %=, |= and ~= // custom can be "{" function byAttribute(cs, attr, value, op, custom){ var result = [], ri = -1, useGetStyle = custom == "{", fn = Ext.DomQuery.operators[op], a, xml, hasXml; for(var i = 0, ci; ci = cs[i]; i++){ // skip non-element nodes. if(ci.nodeType != 1){ continue; } // only need to do this for the first node if(!hasXml){ xml = Ext.DomQuery.isXml(ci); hasXml = true; } // we only need to change the property names if we're dealing with html nodes, not XML if(!xml){ if(useGetStyle){ a = Ext.DomQuery.getStyle(ci, attr); } else if (attr == "class" || attr == "className"){ a = ci.className; } else if (attr == "for"){ a = ci.htmlFor; } else if (attr == "href"){ // getAttribute href bug // http://www.glennjones.net/Post/809/getAttributehrefbug.htm a = ci.getAttribute("href", 2); } else{ a = ci.getAttribute(attr); } }else{ a = ci.getAttribute(attr); } if((fn && fn(a, value)) || (!fn && a)){ result[++ri] = ci; } } return result; } function byPseudo(cs, name, value){ return Ext.DomQuery.pseudos[name](cs, value); } function nodupIEXml(cs){ var d = ++key, r; cs[0].setAttribute("_nodup", d); r = [cs[0]]; for(var i = 1, len = cs.length; i < len; i++){ var c = cs[i]; if(!c.getAttribute("_nodup") != d){ c.setAttribute("_nodup", d); r[r.length] = c; } } for(var i = 0, len = cs.length; i < len; i++){ cs[i].removeAttribute("_nodup"); } return r; } function nodup(cs){ if(!cs){ return []; } var len = cs.length, c, i, r = cs, cj, ri = -1; if(!len || typeof cs.nodeType != "undefined" || len == 1){ return cs; } if(isIE && typeof cs[0].selectSingleNode != "undefined"){ return nodupIEXml(cs); } var d = ++key; cs[0]._nodup = d; for(i = 1; c = cs[i]; i++){ if(c._nodup != d){ c._nodup = d; }else{ r = []; for(var j = 0; j < i; j++){ r[++ri] = cs[j]; } for(j = i+1; cj = cs[j]; j++){ if(cj._nodup != d){ cj._nodup = d; r[++ri] = cj; } } return r; } } return r; } function quickDiffIEXml(c1, c2){ var d = ++key, r = []; for(var i = 0, len = c1.length; i < len; i++){ c1[i].setAttribute("_qdiff", d); } for(var i = 0, len = c2.length; i < len; i++){ if(c2[i].getAttribute("_qdiff") != d){ r[r.length] = c2[i]; } } for(var i = 0, len = c1.length; i < len; i++){ c1[i].removeAttribute("_qdiff"); } return r; } function quickDiff(c1, c2){ var len1 = c1.length, d = ++key, r = []; if(!len1){ return c2; } if(isIE && typeof c1[0].selectSingleNode != "undefined"){ return quickDiffIEXml(c1, c2); } for(var i = 0; i < len1; i++){ c1[i]._qdiff = d; } for(var i = 0, len = c2.length; i < len; i++){ if(c2[i]._qdiff != d){ r[r.length] = c2[i]; } } return r; } function quickId(ns, mode, root, id){ if(ns == root){ var d = root.ownerDocument || root; return d.getElementById(id); } ns = getNodes(ns, mode, "*"); return byId(ns, id); } return { getStyle : function(el, name){ return Ext.fly(el).getStyle(name); }, /** * Compiles a selector/xpath query into a reusable function. The returned function * takes one parameter "root" (optional), which is the context node from where the query should start. * @param {String} selector The selector/xpath query * @param {String} type (optional) Either "select" (the default) or "simple" for a simple selector match * @return {Function} */ compile : function(path, type){ type = type || "select"; // setup fn preamble var fn = ["var f = function(root){\n var mode; ++batch; var n = root || document;\n"], mode, lastPath, matchers = Ext.DomQuery.matchers, matchersLn = matchers.length, modeMatch, // accept leading mode switch lmode = path.match(modeRe); if(lmode && lmode[1]){ fn[fn.length] = 'mode="'+lmode[1].replace(trimRe, "")+'";'; path = path.replace(lmode[1], ""); } // strip leading slashes while(path.substr(0, 1)=="/"){ path = path.substr(1); } while(path && lastPath != path){ lastPath = path; var tokenMatch = path.match(tagTokenRe); if(type == "select"){ if(tokenMatch){ // ID Selector if(tokenMatch[1] == "#"){ fn[fn.length] = 'n = quickId(n, mode, root, "'+tokenMatch[2]+'");'; }else{ fn[fn.length] = 'n = getNodes(n, mode, "'+tokenMatch[2]+'");'; } path = path.replace(tokenMatch[0], ""); }else if(path.substr(0, 1) != '@'){ fn[fn.length] = 'n = getNodes(n, mode, "*");'; } // type of "simple" }else{ if(tokenMatch){ if(tokenMatch[1] == "#"){ fn[fn.length] = 'n = byId(n, "'+tokenMatch[2]+'");'; }else{ fn[fn.length] = 'n = byTag(n, "'+tokenMatch[2]+'");'; } path = path.replace(tokenMatch[0], ""); } } while(!(modeMatch = path.match(modeRe))){ var matched = false; for(var j = 0; j < matchersLn; j++){ var t = matchers[j]; var m = path.match(t.re); if(m){ fn[fn.length] = t.select.replace(tplRe, function(x, i){ return m[i]; }); path = path.replace(m[0], ""); matched = true; break; } } // prevent infinite loop on bad selector if(!matched){ throw 'Error parsing selector, parsing failed at "' + path + '"'; } } if(modeMatch[1]){ fn[fn.length] = 'mode="'+modeMatch[1].replace(trimRe, "")+'";'; path = path.replace(modeMatch[1], ""); } } // close fn out fn[fn.length] = "return nodup(n);\n}"; // eval fn and return it eval(fn.join("")); return f; }, /** * Selects a group of elements. * @param {String} selector The selector/xpath query (can be a comma separated list of selectors) * @param {Node/String} root (optional) The start of the query (defaults to document). * @return {Array} An Array of DOM elements which match the selector. If there are * no matches, and empty Array is returned. */ jsSelect: function(path, root, type){ // set root to doc if not specified. root = root || document; if(typeof root == "string"){ root = document.getElementById(root); } var paths = path.split(","), results = []; // loop over each selector for(var i = 0, len = paths.length; i < len; i++){ var subPath = paths[i].replace(trimRe, ""); // compile and place in cache if(!cache[subPath]){ cache[subPath] = Ext.DomQuery.compile(subPath); if(!cache[subPath]){ throw subPath + " is not a valid selector"; } } var result = cache[subPath](root); if(result && result != document){ results = results.concat(result); } } // if there were multiple selectors, make sure dups // are eliminated if(paths.length > 1){ return nodup(results); } return results; }, isXml: function(el) { var docEl = (el ? el.ownerDocument || el : 0).documentElement; return docEl ? docEl.nodeName !== "HTML" : false; }, select : document.querySelectorAll ? function(path, root, type) { root = root || document; if (!Ext.DomQuery.isXml(root)) { try { var cs = root.querySelectorAll(path); return Ext.toArray(cs); } catch (ex) {} } return Ext.DomQuery.jsSelect.call(this, path, root, type); } : function(path, root, type) { return Ext.DomQuery.jsSelect.call(this, path, root, type); }, /** * Selects a single element. * @param {String} selector The selector/xpath query * @param {Node} root (optional) The start of the query (defaults to document). * @return {Element} The DOM element which matched the selector. */ selectNode : function(path, root){ return Ext.DomQuery.select(path, root)[0]; }, /** * Selects the value of a node, optionally replacing null with the defaultValue. * @param {String} selector The selector/xpath query * @param {Node} root (optional) The start of the query (defaults to document). * @param {String} defaultValue (optional) * @return {String} */ selectValue : function(path, root, defaultValue){ path = path.replace(trimRe, ""); if(!valueCache[path]){ valueCache[path] = Ext.DomQuery.compile(path, "select"); } var n = valueCache[path](root), v; n = n[0] ? n[0] : n; // overcome a limitation of maximum textnode size // Rumored to potentially crash IE6 but has not been confirmed. // http://reference.sitepoint.com/javascript/Node/normalize // https://developer.mozilla.org/En/DOM/Node.normalize if (typeof n.normalize == 'function') n.normalize(); v = (n && n.firstChild ? n.firstChild.nodeValue : null); return ((v === null||v === undefined||v==='') ? defaultValue : v); }, /** * Selects the value of a node, parsing integers and floats. Returns the defaultValue, or 0 if none is specified. * @param {String} selector The selector/xpath query * @param {Node} root (optional) The start of the query (defaults to document). * @param {Number} defaultValue (optional) * @return {Number} */ selectNumber : function(path, root, defaultValue){ var v = Ext.DomQuery.selectValue(path, root, defaultValue || 0); return parseFloat(v); }, /** * Returns true if the passed element(s) match the passed simple selector (e.g. div.some-class or span:first-child) * @param {String/HTMLElement/Array} el An element id, element or array of elements * @param {String} selector The simple selector to test * @return {Boolean} */ is : function(el, ss){ if(typeof el == "string"){ el = document.getElementById(el); } var isArray = Ext.isArray(el), result = Ext.DomQuery.filter(isArray ? el : [el], ss); return isArray ? (result.length == el.length) : (result.length > 0); }, /** * Filters an array of elements to only include matches of a simple selector (e.g. div.some-class or span:first-child) * @param {Array} el An array of elements to filter * @param {String} selector The simple selector to test * @param {Boolean} nonMatches If true, it returns the elements that DON'T match * the selector instead of the ones that match * @return {Array} An Array of DOM elements which match the selector. If there are * no matches, and empty Array is returned. */ filter : function(els, ss, nonMatches){ ss = ss.replace(trimRe, ""); if(!simpleCache[ss]){ simpleCache[ss] = Ext.DomQuery.compile(ss, "simple"); } var result = simpleCache[ss](els); return nonMatches ? quickDiff(result, els) : result; }, /** * Collection of matching regular expressions and code snippets. * Each capture group within () will be replace the {} in the select * statement as specified by their index. */ matchers : [{ re: /^\.([\w\-]+)/, select: 'n = byClassName(n, " {1} ");' }, { re: /^\:([\w\-]+)(?:\(((?:[^\s>\/]*|.*?))\))?/, select: 'n = byPseudo(n, "{1}", "{2}");' },{ re: /^(?:([\[\{])(?:@)?([\w\-]+)\s?(?:(=|.=)\s?(["']?)(.*?)\4)?[\]\}])/, select: 'n = byAttribute(n, "{2}", "{5}", "{3}", "{1}");' }, { re: /^#([\w\-]+)/, select: 'n = byId(n, "{1}");' },{ re: /^@([\w\-]+)/, select: 'return {firstChild:{nodeValue:attrValue(n, "{1}")}};' } ], /** * Collection of operator comparison functions. The default operators are =, !=, ^=, $=, *=, %=, |= and ~=. * New operators can be added as long as the match the format <i>c</i>= where <i>c</i> is any character other than space, > <. */ operators : { "=" : function(a, v){ return a == v; }, "!=" : function(a, v){ return a != v; }, "^=" : function(a, v){ return a && a.substr(0, v.length) == v; }, "$=" : function(a, v){ return a && a.substr(a.length-v.length) == v; }, "*=" : function(a, v){ return a && a.indexOf(v) !== -1; }, "%=" : function(a, v){ return (a % v) == 0; }, "|=" : function(a, v){ return a && (a == v || a.substr(0, v.length+1) == v+'-'); }, "~=" : function(a, v){ return a && (' '+a+' ').indexOf(' '+v+' ') != -1; } }, /** * <p>Object hash of "pseudo class" filter functions which are used when filtering selections. Each function is passed * two parameters:</p><div class="mdetail-params"><ul> * <li><b>c</b> : Array<div class="sub-desc">An Array of DOM elements to filter.</div></li> * <li><b>v</b> : String<div class="sub-desc">The argument (if any) supplied in the selector.</div></li> * </ul></div> * <p>A filter function returns an Array of DOM elements which conform to the pseudo class.</p> * <p>In addition to the provided pseudo classes listed above such as <code>first-child</code> and <code>nth-child</code>, * developers may add additional, custom psuedo class filters to select elements according to application-specific requirements.</p> * <p>For example, to filter <code><a></code> elements to only return links to <i>external</i> resources:</p> * <code><pre> Ext.DomQuery.pseudos.external = function(c, v){ var r = [], ri = -1; for(var i = 0, ci; ci = c[i]; i++){ // Include in result set only if it's a link to an external resource if(ci.hostname != location.hostname){ r[++ri] = ci; } } return r; };</pre></code> * Then external links could be gathered with the following statement:<code><pre> var externalLinks = Ext.select("a:external"); </code></pre> */ pseudos : { "first-child" : function(c){ var r = [], ri = -1, n; for(var i = 0, ci; ci = n = c[i]; i++){ while((n = n.previousSibling) && n.nodeType != 1); if(!n){ r[++ri] = ci; } } return r; }, "last-child" : function(c){ var r = [], ri = -1, n; for(var i = 0, ci; ci = n = c[i]; i++){ while((n = n.nextSibling) && n.nodeType != 1); if(!n){ r[++ri] = ci; } } return r; }, "nth-child" : function(c, a) { var r = [], ri = -1, m = nthRe.exec(a == "even" && "2n" || a == "odd" && "2n+1" || !nthRe2.test(a) && "n+" + a || a), f = (m[1] || 1) - 0, l = m[2] - 0; for(var i = 0, n; n = c[i]; i++){ var pn = n.parentNode; if (batch != pn._batch) { var j = 0; for(var cn = pn.firstChild; cn; cn = cn.nextSibling){ if(cn.nodeType == 1){ cn.nodeIndex = ++j; } } pn._batch = batch; } if (f == 1) { if (l == 0 || n.nodeIndex == l){ r[++ri] = n; } } else if ((n.nodeIndex + l) % f == 0){ r[++ri] = n; } } return r; }, "only-child" : function(c){ var r = [], ri = -1;; for(var i = 0, ci; ci = c[i]; i++){ if(!prev(ci) && !next(ci)){ r[++ri] = ci; } } return r; }, "empty" : function(c){ var r = [], ri = -1; for(var i = 0, ci; ci = c[i]; i++){ var cns = ci.childNodes, j = 0, cn, empty = true; while(cn = cns[j]){ ++j; if(cn.nodeType == 1 || cn.nodeType == 3){ empty = false; break; } } if(empty){ r[++ri] = ci; } } return r; }, "contains" : function(c, v){ var r = [], ri = -1; for(var i = 0, ci; ci = c[i]; i++){ if((ci.textContent||ci.innerText||'').indexOf(v) != -1){ r[++ri] = ci; } } return r; }, "nodeValue" : function(c, v){ var r = [], ri = -1; for(var i = 0, ci; ci = c[i]; i++){ if(ci.firstChild && ci.firstChild.nodeValue == v){ r[++ri] = ci; } } return r; }, "checked" : function(c){ var r = [], ri = -1; for(var i = 0, ci; ci = c[i]; i++){ if(ci.checked == true){ r[++ri] = ci; } } return r; }, "not" : function(c, ss){ return Ext.DomQuery.filter(c, ss, true); }, "any" : function(c, selectors){ var ss = selectors.split('|'), r = [], ri = -1, s; for(var i = 0, ci; ci = c[i]; i++){ for(var j = 0; s = ss[j]; j++){ if(Ext.DomQuery.is(ci, s)){ r[++ri] = ci; break; } } } return r; }, "odd" : function(c){ return this["nth-child"](c, "odd"); }, "even" : function(c){ return this["nth-child"](c, "even"); }, "nth" : function(c, a){ return c[a-1] || []; }, "first" : function(c){ return c[0] || []; }, "last" : function(c){ return c[c.length-1] || []; }, "has" : function(c, ss){ var s = Ext.DomQuery.select, r = [], ri = -1; for(var i = 0, ci; ci = c[i]; i++){ if(s(ss, ci).length > 0){ r[++ri] = ci; } } return r; }, "next" : function(c, ss){ var is = Ext.DomQuery.is, r = [], ri = -1; for(var i = 0, ci; ci = c[i]; i++){ var n = next(ci); if(n && is(n, ss)){ r[++ri] = ci; } } return r; }, "prev" : function(c, ss){ var is = Ext.DomQuery.is, r = [], ri = -1; for(var i = 0, ci; ci = c[i]; i++){ var n = prev(ci); if(n && is(n, ss)){ r[++ri] = ci; } } return r; } } }; }(); /** * Selects an array of DOM nodes by CSS/XPath selector. Shorthand of {@link Ext.DomQuery#select} * @param {String} path The selector/xpath query * @param {Node} root (optional) The start of the query (defaults to document). * @return {Array} * @member Ext * @method query */ Ext.query = Ext.DomQuery.select;