summaryrefslogtreecommitdiff
path: root/gitweb/static/js/lib/common-lib.js
diff options
context:
space:
mode:
Diffstat (limited to 'gitweb/static/js/lib/common-lib.js')
-rw-r--r--gitweb/static/js/lib/common-lib.js51
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 d6b0c0d..b371391 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 */
/**#@+