added jQuery.subclass

[jquery.git] / src / core.js

diff --git a/src/core.js b/src/core.js
index 4361577..0bf0cb4 100644 (file)
--- a/src/core.js
+++ b/src/core.js
@@ -3,7 +3,7 @@ var jQuery = (function() {
 // Define a local copy of jQuery
 var jQuery = function( selector, context ) {
                // The jQuery object is actually just the init constructor 'enhanced'
-               return new jQuery.fn.init( selector, context );
+               return new jQuery.fn.init( selector, context, rootjQuery );
        },
 
        // Map over jQuery in case of overwrite
@@ -78,7 +78,8 @@ var jQuery = function( selector, context ) {
        class2type = {};
 
 jQuery.fn = jQuery.prototype = {
-       init: function( selector, context ) {
+       constructor: jQuery,
+       init: function( selector, context, rootjQuery ) {
                var match, elem, ret, doc;
 
                // Handle $(""), $(null), or $(undefined)
@@ -112,6 +113,7 @@ jQuery.fn = jQuery.prototype = {
 
                                // HANDLE: $(html) -> $(array)
                                if ( match[1] ) {
+                                       context = context instanceof jQuery ? context[0] : context;
                                        doc = (context ? context.ownerDocument || context : document);
 
                                        // If a single string is passed in and it's a single tag
@@ -171,7 +173,7 @@ jQuery.fn = jQuery.prototype = {
                        // HANDLE: $(expr, context)
                        // (which is just equivalent to: $(context).find(expr)
                        } else {
-                               return jQuery( context ).find( selector );
+                               return this.constructor( context ).find( selector );
                        }
 
                // HANDLE: $(function)
@@ -222,7 +224,7 @@ jQuery.fn = jQuery.prototype = {
        // (returning the new matched element set)
        pushStack: function( elems, name, selector ) {
                // Build a new jQuery matched element set
-               var ret = jQuery();
+               var ret = this.constructor();
 
                if ( jQuery.isArray( elems ) ) {
                        push.apply( ret, elems );
@@ -287,7 +289,7 @@ jQuery.fn = jQuery.prototype = {
        },
 
        end: function() {
-               return this.prevObject || jQuery(null);
+               return this.prevObject || this.constructor(null);
        },
 
        // For internal use only.
@@ -960,6 +962,25 @@ jQuery.extend({
                return { browser: match[1] || "", version: match[2] || "0" };
        },
 
+       subclass: function(){
+               function jQuerySubclass( selector, context ) {
+                       return new jQuerySubclass.fn.init( selector, context );
+               }
+               jQuerySubclass.superclass = this;
+               jQuerySubclass.fn = jQuerySubclass.prototype = this();
+               jQuerySubclass.fn.constructor = jQuerySubclass;
+               jQuerySubclass.subclass = this.subclass;
+               jQuerySubclass.fn.init = function init( selector, context ) {
+                       if (context && context instanceof jQuery && !(context instanceof jQuerySubclass)){
+                               context = jQuerySubclass(context);
+                       }
+                       return jQuery.fn.init.call( this, selector, context, rootjQuerySubclass );
+               };
+               jQuerySubclass.fn.init.prototype = jQuerySubclass.fn;
+               var rootjQuerySubclass = jQuerySubclass(document);
+               return jQuerySubclass;
+       },
+
        browser: {}
 });