+++ /dev/null
-define("dojo/selector/lite", ["../has", "../_base/kernel"], function(has, dojo){
-"use strict";
-// summary:
-// A small lightweight query selector engine that implements CSS2.1 selectors
-// minus pseudo-classes and the sibling combinator, plus CSS3 attribute selectors
-var testDiv = document.createElement("div");
-var matchesSelector = testDiv.matchesSelector || testDiv.webkitMatchesSelector || testDiv.mozMatchesSelector || testDiv.msMatchesSelector || testDiv.oMatchesSelector; // IE9, WebKit, Firefox have this, but not Opera yet
-var querySelectorAll = testDiv.querySelectorAll;
-has.add("dom-matches-selector", !!matchesSelector);
-has.add("dom-qsa", !!querySelectorAll);
-
-// this is a simple query engine. It has handles basic selectors, and for simple
-// common selectors is extremely fast
-var liteEngine = function(selector, root){
- if(combine && selector.indexOf(',') > -1){
- return combine(selector, root);
- }
- var match = (querySelectorAll ?
- /^([\w]*)#([\w\-]+$)|^(\.)([\w\-\*]+$)|^(\w+$)/ : // this one only matches on simple queries where we can beat qSA with specific methods
- /^([\w]*)#([\w\-]+)(?:\s+(.*))?$|(?:^|(>|.+\s+))([\w\-\*]+)(\S*$)/) // this one matches parts of the query that we can use to speed up manual filtering
- .exec(selector);
- root = root || document;
- if(match){
- // fast path regardless of whether or not querySelectorAll exists
- if(match[2]){
- // an #id
- // use dojo.byId if available as it fixes the id retrieval in IE
- var found = dojo.byId ? dojo.byId(match[2]) : document.getElementById(match[2]);
- if(!found || (match[1] && match[1] != found.tagName.toLowerCase())){
- // if there is a tag qualifer and it doesn't match, no matches
- return [];
- }
- if(root != document){
- // there is a root element, make sure we are a child of it
- var parent = found;
- while(parent != root){
- parent = parent.parentNode;
- if(!parent){
- return [];
- }
- }
- }
- return match[3] ?
- liteEngine(match[3], found)
- : [found];
- }
- if(match[3] && root.getElementsByClassName){
- // a .class
- return root.getElementsByClassName(match[4]);
- }
- var found;
- if(match[5]){
- // a tag
- found = root.getElementsByTagName(match[5]);
- if(match[4] || match[6]){
- selector = (match[4] || "") + match[6];
- }else{
- // that was the entirety of the query, return results
- return found;
- }
- }
- }
- if(querySelectorAll){
- // qSA works strangely on Element-rooted queries
- // We can work around this by specifying an extra ID on the root
- // and working up from there (Thanks to Andrew Dupont for the technique)
- // IE 8 doesn't work on object elements
- if (root.nodeType === 1 && root.nodeName.toLowerCase() !== "object"){
- return useRoot(root, selector, root.querySelectorAll);
- }else{
- // we can use the native qSA
- return root.querySelectorAll(selector);
- }
- }else if(!found){
- // search all children and then filter
- found = root.getElementsByTagName("*");
- }
- // now we filter the nodes that were found using the matchesSelector
- var results = [];
- for(var i = 0, l = found.length; i < l; i++){
- var node = found[i];
- if(node.nodeType == 1 && jsMatchesSelector(node, selector, root)){
- // keep the nodes that match the selector
- results.push(node);
- }
- }
- return results;
-};
-var useRoot = function(context, query, method){
- // this function creates a temporary id so we can do rooted qSA queries, this is taken from sizzle
- var oldContext = context,
- old = context.getAttribute( "id" ),
- nid = old || "__dojo__",
- hasParent = context.parentNode,
- relativeHierarchySelector = /^\s*[+~]/.test( query );
-
- if(relativeHierarchySelector && !hasParent){
- return [];
- }
- if(!old){
- context.setAttribute("id", nid);
- }else{
- nid = nid.replace(/'/g, "\\$&");
- }
- if(relativeHierarchySelector && hasParent){
- context = context.parentNode;
- }
-
- try {
- return method.call(context, "[id='" + nid + "'] " + query );
- } finally {
- if ( !old ) {
- oldContext.removeAttribute( "id" );
- }
- }
-};
-
-if(!has("dom-matches-selector")){
- var jsMatchesSelector = (function(){
- // a JS implementation of CSS selector matching, first we start with the various handlers
- var caseFix = testDiv.tagName == "div" ? "toLowerCase" : "toUpperCase";
- function tag(tagName){
- tagName = tagName[caseFix]();
- return function(node){
- return node.tagName == tagName;
- }
- }
- function className(className){
- var classNameSpaced = ' ' + className + ' ';
- return function(node){
- return node.className.indexOf(className) > -1 && (' ' + node.className + ' ').indexOf(classNameSpaced) > -1;
- }
- }
- var attrComparators = {
- "^=": function(attrValue, value){
- return attrValue.indexOf(value) == 0;
- },
- "*=": function(attrValue, value){
- return attrValue.indexOf(value) > -1;
- },
- "$=": function(attrValue, value){
- return attrValue.substring(attrValue.length - value.length, attrValue.length) == value;
- },
- "~=": function(attrValue, value){
- return (' ' + attrValue + ' ').indexOf(' ' + value + ' ') > -1;
- },
- "|=": function(attrValue, value){
- return (attrValue + '-').indexOf(value + '-') == 0;
- },
- "=": function(attrValue, value){
- return attrValue == value;
- },
- "": function(attrValue, value){
- return true;
- }
- };
- function attr(name, value, type){
- if(value.match(/['"]/)){
- // it is quoted, do an eval to parse the string (CSS and JS parsing are close enough)
- value = eval(value);
- }
- var comparator = attrComparators[type || ""];
- return function(node){
- var attrValue = node.getAttribute(name);
- return attrValue && comparator(attrValue, value);
- }
- }
- function ancestor(matcher){
- return function(node, root){
- while((node = node.parentNode) != root){
- if(matcher(node, root)){
- return true;
- }
- }
- };
- }
- function parent(matcher){
- return function(node, root){
- node = node.parentNode;
- return matcher ?
- node != root && matcher(node, root)
- : node == root;
- };
- }
- var cache = {};
- function and(matcher, next){
- return matcher ?
- function(node, root){
- return next(node) && matcher(node, root);
- }
- : next;
- }
- return function(node, selector, root){
- // this returns true or false based on if the node matches the selector (optionally within the given root)
- var matcher = cache[selector]; // check to see if we have created a matcher function for the given selector
- if(!matcher){
- // create a matcher function for the given selector
- // parse the selectors
- if(selector.replace(/(?:\s*([> ])\s*)|(\.)?([\w-]+)|\[([\w-]+)\s*(.?=)?\s*([^\]]*)\]/g, function(t, combinator, type, value, attrName, attrType, attrValue){
- if(value){
- if(type == "."){
- matcher = and(matcher, className(value));
- }
- else{
- matcher = and(matcher, tag(value));
- }
- }
- else if(combinator){
- matcher = (combinator == " " ? ancestor : parent)(matcher);
- }
- else if(attrName){
- matcher = and(matcher, attr(attrName, attrValue, attrType));
- }
- return "";
- })){
- throw new Error("Syntax error in query");
- }
- if(!matcher){
- return true;
- }
- cache[selector] = matcher;
- }
- // now run the matcher function on the node
- return matcher(node, root);
- };
- })();
-}
-if(!has("dom-qsa")){
- var combine = function(selector, root){
- // combined queries
- selector = selector.split(/\s*,\s*/);
- var indexed = [];
- // add all results and keep unique ones, this only runs in IE, so we take advantage
- // of known IE features, particularly sourceIndex which is unique and allows us to
- // order the results
- for(var i = 0; i < selector.length; i++){
- var results = liteEngine(selector[i], root);
- for(var j = 0, l = results.length; j < l; j++){
- var node = results[j];
- indexed[node.sourceIndex] = node;
- }
- }
- // now convert from a sparse array to a dense array
- var totalResults = [];
- for(i in indexed){
- totalResults.push(indexed[i]);
- }
- return totalResults;
- };
-}
-
-liteEngine.match = matchesSelector ? function(node, selector, root){
- if(root){
- // doesn't support three args, use rooted id trick
- return useRoot(root, selector, function(query){
- return matchesSelector.call(node, query);
- });
- }
- // we have a native matchesSelector, use that
- return matchesSelector.call(node, selector);
-} : jsMatchesSelector; // otherwise use the JS matches impl
-
-return liteEngine;
-});
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