2 bricoles.

[Plinn.git] / skins / ajax_scripts / javascript_events_api.js

diff --git a/skins/ajax_scripts/javascript_events_api.js b/skins/ajax_scripts/javascript_events_api.js
index 62ec577..71baec7 100644 (file)
--- a/skins/ajax_scripts/javascript_events_api.js
+++ b/skins/ajax_scripts/javascript_events_api.js
@@ -26,6 +26,7 @@ var getCopyOfNode; /* (node) returns a clone of the given node.
                                                * the node came from a foreign document (eg. XmlHttpRequest xml reponse)
                                                * to inject HMTL code inside tags where innerHtml is read only (IE)
                                        */
+var copyPrototype; // (descendant, parent) lightwheight javascript inheritance
 
 (function(){
 
@@ -297,4 +298,19 @@ else {
        _setAttribute = function(e, name, value) {e.setAttribute(name, value);};
 }
 
+/* 
+* http://www.sitepoint.com/blogs/2006/01/17/javascript-inheritance/
+*/
+
+copyPrototype = function (descendant, parent) { 
+       var sConstructor = parent.toString(); 
+       var aMatch = sConstructor.match( /\s*function (.*)\(/ );
+       if ( aMatch !== null ) { descendant.prototype[aMatch[1]] = parent; }
+       var m;
+       for (m in parent.prototype) {
+               if (parent.prototype.hasOwnProperty(m)) {
+                       descendant.prototype[m] = parent.prototype[m]; }
+       }
+};
+
 }());