underlays/javascript/ikiwiki/ikiwiki.js

   1 // ikiwiki's javascript utility function library
   2
   3 var hooks;
   4
   5 // Run onload as soon as the DOM is ready, if possible.
   6 // gecko, opera 9
   7 if (document.addEventListener) {
   8         document.addEventListener("DOMContentLoaded", run_hooks_onload, false);
   9 }
  10 // other browsers
  11 window.onload = run_hooks_onload;
  12
  13 var onload_done = 0;
  14
  15 function run_hooks_onload() {
  16         // avoid firing twice
  17         if (onload_done)
  18                 return;
  19         onload_done = true;
  20
  21         run_hooks("onload");
  22 }
  23
  24 function run_hooks(name) {
  25         if (typeof(hooks) != "undefined") {
  26                 for (var i = 0; i < hooks.length; i++) {
  27                         if (hooks[i].name == name) {
  28                                 hooks[i].call();
  29                         }
  30                 }
  31         }
  32 }
  33
  34 function hook(name, call) {
  35         if (typeof(hooks) == "undefined")
  36                 hooks = new Array;
  37         hooks.push({name: name, call: call});
  38 }
  39
  40 function getElementsByClass(cls, node, tag) {
  41         if (document.getElementsByClass)
  42                 return document.getElementsByClass(cls, node, tag);
  43         if (! node) node = document;
  44         if (! tag) tag = '*';
  45         var ret = new Array();
  46         var pattern = new RegExp("(^|\\s)"+cls+"(\\s|$)");
  47         var els = node.getElementsByTagName(tag);
  48         for (i = 0; i < els.length; i++) {
  49                 if ( pattern.test(els[i].className) ) {
  50                         ret.push(els[i]);
  51                 }
  52         }
  53         return ret;
  54 }