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Déplacement de Grappelli dans gestioncof/static
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167
gestioncof/static/grappelli/js/getElementsBySelector.js
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gestioncof/static/grappelli/js/getElementsBySelector.js
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/* document.getElementsBySelector(selector)
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- returns an array of element objects from the current document
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matching the CSS selector. Selectors can contain element names,
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class names and ids and can be nested. For example:
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elements = document.getElementsBySelect('div#main p a.external')
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Will return an array of all 'a' elements with 'external' in their
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class attribute that are contained inside 'p' elements that are
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contained inside the 'div' element which has id="main"
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New in version 0.4: Support for CSS2 and CSS3 attribute selectors:
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See http://www.w3.org/TR/css3-selectors/#attribute-selectors
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Version 0.4 - Simon Willison, March 25th 2003
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-- Works in Phoenix 0.5, Mozilla 1.3, Opera 7, Internet Explorer 6, Internet Explorer 5 on Windows
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-- Opera 7 fails
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*/
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function getAllChildren(e) {
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// Returns all children of element. Workaround required for IE5/Windows. Ugh.
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return e.all ? e.all : e.getElementsByTagName('*');
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}
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document.getElementsBySelector = function(selector) {
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// Attempt to fail gracefully in lesser browsers
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if (!document.getElementsByTagName) {
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return new Array();
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}
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// Split selector in to tokens
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var tokens = selector.split(' ');
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var currentContext = new Array(document);
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for (var i = 0; i < tokens.length; i++) {
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token = tokens[i].replace(/^\s+/,'').replace(/\s+$/,'');;
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if (token.indexOf('#') > -1) {
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// Token is an ID selector
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var bits = token.split('#');
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var tagName = bits[0];
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var id = bits[1];
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var element = document.getElementById(id);
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if (!element || (tagName && element.nodeName.toLowerCase() != tagName)) {
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// ID not found or tag with that ID not found, return false.
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return new Array();
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}
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// Set currentContext to contain just this element
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currentContext = new Array(element);
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continue; // Skip to next token
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}
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if (token.indexOf('.') > -1) {
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// Token contains a class selector
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var bits = token.split('.');
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var tagName = bits[0];
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var className = bits[1];
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if (!tagName) {
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tagName = '*';
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}
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// Get elements matching tag, filter them for class selector
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var found = new Array;
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var foundCount = 0;
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for (var h = 0; h < currentContext.length; h++) {
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var elements;
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if (tagName == '*') {
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elements = getAllChildren(currentContext[h]);
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} else {
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try {
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elements = currentContext[h].getElementsByTagName(tagName);
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}
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catch(e) {
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elements = [];
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}
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}
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for (var j = 0; j < elements.length; j++) {
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found[foundCount++] = elements[j];
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}
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}
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currentContext = new Array;
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var currentContextIndex = 0;
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for (var k = 0; k < found.length; k++) {
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if (found[k].className && found[k].className.match(new RegExp('\\b'+className+'\\b'))) {
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currentContext[currentContextIndex++] = found[k];
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}
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}
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continue; // Skip to next token
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}
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// Code to deal with attribute selectors
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if (token.match(/^(\w*)\[(\w+)([=~\|\^\$\*]?)=?"?([^\]"]*)"?\]$/)) {
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var tagName = RegExp.$1;
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var attrName = RegExp.$2;
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var attrOperator = RegExp.$3;
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var attrValue = RegExp.$4;
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if (!tagName) {
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tagName = '*';
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}
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// Grab all of the tagName elements within current context
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var found = new Array;
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var foundCount = 0;
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for (var h = 0; h < currentContext.length; h++) {
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var elements;
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if (tagName == '*') {
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elements = getAllChildren(currentContext[h]);
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} else {
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elements = currentContext[h].getElementsByTagName(tagName);
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}
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for (var j = 0; j < elements.length; j++) {
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found[foundCount++] = elements[j];
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}
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}
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currentContext = new Array;
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var currentContextIndex = 0;
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var checkFunction; // This function will be used to filter the elements
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switch (attrOperator) {
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case '=': // Equality
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checkFunction = function(e) { return (e.getAttribute(attrName) == attrValue); };
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break;
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case '~': // Match one of space seperated words
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checkFunction = function(e) { return (e.getAttribute(attrName).match(new RegExp('\\b'+attrValue+'\\b'))); };
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break;
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case '|': // Match start with value followed by optional hyphen
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checkFunction = function(e) { return (e.getAttribute(attrName).match(new RegExp('^'+attrValue+'-?'))); };
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break;
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case '^': // Match starts with value
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checkFunction = function(e) { return (e.getAttribute(attrName).indexOf(attrValue) == 0); };
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break;
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case '$': // Match ends with value - fails with "Warning" in Opera 7
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checkFunction = function(e) { return (e.getAttribute(attrName).lastIndexOf(attrValue) == e.getAttribute(attrName).length - attrValue.length); };
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break;
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case '*': // Match ends with value
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checkFunction = function(e) { return (e.getAttribute(attrName).indexOf(attrValue) > -1); };
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break;
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default :
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// Just test for existence of attribute
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checkFunction = function(e) { return e.getAttribute(attrName); };
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}
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currentContext = new Array;
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var currentContextIndex = 0;
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for (var k = 0; k < found.length; k++) {
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if (checkFunction(found[k])) {
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currentContext[currentContextIndex++] = found[k];
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}
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}
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// alert('Attribute Selector: '+tagName+' '+attrName+' '+attrOperator+' '+attrValue);
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continue; // Skip to next token
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}
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// If we get here, token is JUST an element (not a class or ID selector)
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tagName = token;
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var found = new Array;
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var foundCount = 0;
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for (var h = 0; h < currentContext.length; h++) {
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var elements = currentContext[h].getElementsByTagName(tagName);
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for (var j = 0; j < elements.length; j++) {
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found[foundCount++] = elements[j];
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}
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}
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currentContext = found;
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}
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return currentContext;
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}
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/* That revolting regular expression explained
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/^(\w+)\[(\w+)([=~\|\^\$\*]?)=?"?([^\]"]*)"?\]$/
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\---/ \---/\-------------/ \-------/
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| | | |
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| | | The value
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| | ~,|,^,$,* or =
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| Attribute
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Tag
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*/
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