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| -rw-r--r-- | gitweb/static/js/lib/common-lib.js | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/gitweb/static/js/lib/common-lib.js b/gitweb/static/js/lib/common-lib.js index d6b0c0d46a..b37139152d 100644 --- a/gitweb/static/js/lib/common-lib.js +++ b/gitweb/static/js/lib/common-lib.js @@ -89,6 +89,57 @@ function createRequestObject() { /* ............................................................ */ +/* Support for legacy browsers */ + +/** + * Provides getElementsByClassName method, if there is no native + * implementation of this method. + * + * NOTE that there are limits and differences compared to native + * getElementsByClassName as defined by e.g.: + * https://developer.mozilla.org/en/DOM/document.getElementsByClassName + * http://www.whatwg.org/specs/web-apps/current-work/multipage/dom.html#dom-getelementsbyclassname + * http://www.whatwg.org/specs/web-apps/current-work/multipage/dom.html#dom-document-getelementsbyclassname + * + * Namely, this implementation supports only single class name as + * argument and not set of space-separated tokens representing classes, + * it returns Array of nodes rather than live NodeList, and has + * additional optional argument where you can limit search to given tags + * (via getElementsByTagName). + * + * Based on + * http://code.google.com/p/getelementsbyclassname/ + * http://www.dustindiaz.com/getelementsbyclass/ + * http://stackoverflow.com/questions/1818865/do-we-have-getelementsbyclassname-in-javascript + * + * See also http://ejohn.org/blog/getelementsbyclassname-speed-comparison/ + * + * @param {String} class: name of _single_ class to find + * @param {String} [taghint] limit search to given tags + * @returns {Node[]} array of matching elements + */ +if (!('getElementsByClassName' in document)) { + document.getElementsByClassName = function (classname, taghint) { + taghint = taghint || "*"; + var elements = (taghint === "*" && document.all) ? + document.all : + document.getElementsByTagName(taghint); + var pattern = new RegExp("(^|\\s)" + classname + "(\\s|$)"); + var matches= []; + for (var i = 0, j = 0, n = elements.length; i < n; i++) { + var el= elements[i]; + if (el.className && pattern.test(el.className)) { + // matches.push(el); + matches[j] = el; + j++; + } + } + return matches; + }; +} // end if + + +/* ............................................................ */ /* unquoting/unescaping filenames */ /**#@+ |