Tagging the 1.5rc1 release.
[jquery.git] / src / core.js
index 34d8094..520db45 100644 (file)
@@ -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
@@ -19,12 +19,8 @@ var jQuery = function( selector, context ) {
        // (both of which we optimize for)
        quickExpr = /^(?:[^<]*(<[\w\W]+>)[^>]*$|#([\w\-]+)$)/,
 
-       // Is it a simple selector
-       isSimple = /^.[^:#\[\.,]*$/,
-
        // Check if a string has a non-whitespace character in it
        rnotwhite = /\S/,
-       rwhite = /\s/,
 
        // Used for trimming whitespace
        trimLeft = /^\s+/,
@@ -59,10 +55,13 @@ var jQuery = function( selector, context ) {
 
        // Has the ready events already been bound?
        readyBound = false,
-       
+
        // The deferred used on DOM ready
        readyList,
 
+       // Promise methods
+       promiseMethods = "then done fail isResolved isRejected promise".split( " " ),
+
        // The ready event handler
        DOMContentLoaded,
 
@@ -75,13 +74,11 @@ var jQuery = function( selector, context ) {
        indexOf = Array.prototype.indexOf,
 
        // [[Class]] -> type pairs
-       class2type = {},
-       
-       // Marker for deferred
-       deferredMarker = [];
+       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)
@@ -115,6 +112,7 @@ 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
@@ -132,7 +130,7 @@ jQuery.fn = jQuery.prototype = {
 
                                        } else {
                                                ret = jQuery.buildFragment( [ match[1] ], [ doc ] );
-                                               selector = (ret.cacheable ? ret.fragment.cloneNode(true) : ret.fragment).childNodes;
+                                               selector = (ret.cacheable ? jQuery.clone(ret.fragment) : ret.fragment).childNodes;
                                        }
 
                                        return jQuery.merge( this, selector );
@@ -160,13 +158,6 @@ jQuery.fn = jQuery.prototype = {
                                        return this;
                                }
 
-                       // HANDLE: $("TAG")
-                       } else if ( !context && !rnonword.test( selector ) ) {
-                               this.selector = selector;
-                               this.context = document;
-                               selector = document.getElementsByTagName( selector );
-                               return jQuery.merge( this, selector );
-
                        // HANDLE: $(expr, $(...))
                        } else if ( !context || context.jquery ) {
                                return (context || rootjQuery).find( selector );
@@ -174,7 +165,7 @@ 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)
@@ -225,7 +216,7 @@ 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 );
@@ -255,13 +246,15 @@ jQuery.fn = jQuery.prototype = {
        each: function( callback, args ) {
                return jQuery.each( this, callback, args );
        },
-       
-       ready: function() {
+
+       ready: function( fn ) {
                // Attach the listeners
                jQuery.bindReady();
-               
-               // Change ready & apply
-               return ( jQuery.fn.ready = readyList.then ).apply( this , arguments );
+
+               // Add the callback
+               readyList.done( fn );
+
+               return this;
        },
 
        eq: function( i ) {
@@ -290,7 +283,7 @@ jQuery.fn = jQuery.prototype = {
        },
 
        end: function() {
-               return this.prevObject || jQuery(null);
+               return this.prevObject || this.constructor(null);
        },
 
        // For internal use only.
@@ -408,8 +401,8 @@ jQuery.extend({
                        }
 
                        // If there are functions bound, to execute
-                       readyList.fire( document , [ jQuery ] );
-                       
+                       readyList.resolveWith( document, [ jQuery ] );
+
                        // Trigger any bound ready events
                        if ( jQuery.fn.trigger ) {
                                jQuery( document ).trigger( "ready" ).unbind( "ready" );
@@ -547,6 +540,28 @@ jQuery.extend({
                }
        },
 
+       // Cross-browser xml parsing
+       // (xml & tmp used internally)
+       parseXML: function( data , xml , tmp ) {
+
+               if ( window.DOMParser ) { // Standard
+                       tmp = new DOMParser();
+                       xml = tmp.parseFromString( data , "text/xml" );
+               } else { // IE
+                       xml = new ActiveXObject( "Microsoft.XMLDOM" );
+                       xml.async = "false";
+                       xml.loadXML( data );
+               }
+
+               tmp = xml.documentElement;
+
+               if ( ! tmp || ! tmp.nodeName || tmp.nodeName === "parsererror" ) {
+                       jQuery.error( "Invalid XML: " + data );
+               }
+
+               return xml;
+       },
+
        noop: function() {},
 
        // Evalulates a script in a global context
@@ -559,7 +574,7 @@ jQuery.extend({
 
                        script.type = "text/javascript";
 
-                       if ( jQuery.support.scriptEval ) {
+                       if ( jQuery.support.scriptEval() ) {
                                script.appendChild( document.createTextNode( data ) );
                        } else {
                                script.text = data;
@@ -781,13 +796,9 @@ jQuery.extend({
        now: function() {
                return (new Date()).getTime();
        },
-       
+
        // Create a simple deferred (one callbacks list)
-       _deferred: function( cancellable ) {
-               
-               // cancellable by default
-               cancellable = cancellable !== false;
-               
+       _Deferred: function() {
                var // callbacks list
                        callbacks = [],
                        // stored [ context , args ]
@@ -798,144 +809,142 @@ jQuery.extend({
                        cancelled,
                        // the deferred itself
                        deferred  = {
-                               
-                               // then( f1, f2, ...)
-                               then: function () {
-                                       
-                                       if ( ! cancelled ) {
-                                       
+
+                               // done( f1, f2, ...)
+                               done: function() {
+                                       if ( !cancelled ) {
                                                var args = arguments,
                                                        i,
                                                        length,
                                                        elem,
                                                        type,
                                                        _fired;
-                                                       
                                                if ( fired ) {
                                                        _fired = fired;
                                                        fired = 0;
                                                }
-                                               
-                                               for ( i = 0, length = args.length ; i < length ; i++ ) {
+                                               for ( i = 0, length = args.length; i < length; i++ ) {
                                                        elem = args[ i ];
                                                        type = jQuery.type( elem );
                                                        if ( type === "array" ) {
-                                                               deferred.then.apply( deferred , elem );
+                                                               deferred.done.apply( deferred, elem );
                                                        } else if ( type === "function" ) {
                                                                callbacks.push( elem );
                                                        }
                                                }
-                                               
                                                if ( _fired ) {
-                                                       deferred.fire( _fired[ 0 ] , _fired[ 1 ] );
+                                                       deferred.resolveWith( _fired[ 0 ], _fired[ 1 ] );
                                                }
                                        }
                                        return this;
                                },
-                               
+
                                // resolve with given context and args
-                               // (i is used internally)
-                               fire: function( context , args , i ) {
-                                       if ( ! cancelled && ! fired && ! firing ) {
+                               resolveWith: function( context, args ) {
+                                       if ( !cancelled && !fired && !firing ) {
                                                firing = 1;
                                                try {
-                                                       for( i = 0 ; ! cancelled && callbacks[ i ] ; i++ ) {
-                                                               cancelled = ( callbacks[ i ].apply( context , args ) === false ) && cancellable;
+                                                       while( callbacks[ 0 ] ) {
+                                                               callbacks.shift().apply( context, args );
                                                        }
-                                               } catch( e ) {
-                                                       cancelled = cancellable;
-                                                       jQuery.error( e );
-                                               } finally {
-                                                       fired = [ context , args ];
-                                                       callbacks = cancelled ? [] : callbacks.slice( i + 1 );
+                                               }
+                                               finally {
+                                                       fired = [ context, args ];
                                                        firing = 0;
                                                }
                                        }
                                        return this;
                                },
-                               
+
                                // resolve with this as context and given arguments
                                resolve: function() {
-                                       deferred.fire( this , arguments );
+                                       deferred.resolveWith( jQuery.isFunction( this.promise ) ? this.promise() : this, arguments );
                                        return this;
                                },
-                               
-                               // cancelling further callbacks
+
+                               // Has this deferred been resolved?
+                               isResolved: function() {
+                                       return !!( firing || fired );
+                               },
+
+                               // Cancel
                                cancel: function() {
-                                       if ( cancellable ) {
-                                               callbacks = [];
-                                               cancelled = 1;
-                                       }
+                                       cancelled = 1;
+                                       callbacks = [];
                                        return this;
                                }
-                               
                        };
-               
-               // Add the deferred marker
-               deferred.then._ = deferredMarker;
-               
+
                return deferred;
        },
-       
+
        // Full fledged deferred (two callbacks list)
-       // Typical success/error system
-       deferred: function( func , cancellable ) {
-               
-               // Handle varargs
-               if ( arguments.length === 1 ) {
-                       
-                       if ( typeof func === "boolean" ) {
-                               cancellable = func;
-                               func = 0;
-                       }
-               }
-               
-               var errorDeferred = jQuery._deferred( cancellable ),
-                       deferred = jQuery._deferred( cancellable ),
-                       // Keep reference of the cancel method since we'll redefine it
-                       cancelThen = deferred.cancel;
-                       
-               // Add errorDeferred methods and redefine cancel                        
-               jQuery.extend( deferred , {
-
-                               fail: errorDeferred.then,
-                               fireReject: errorDeferred.fire,
-                               reject: errorDeferred.resolve,
-                               cancel: function() {
-                                       cancelThen();
-                                       errorDeferred.cancel();
-                                       return this;
+       Deferred: function( func ) {
+               var deferred = jQuery._Deferred(),
+                       failDeferred = jQuery._Deferred(),
+                       promise;
+               // Add errorDeferred methods, then and promise
+               jQuery.extend( deferred, {
+                       then: function( doneCallbacks, failCallbacks ) {
+                               deferred.done( doneCallbacks ).fail( failCallbacks );
+                               return this;
+                       },
+                       fail: failDeferred.done,
+                       rejectWith: failDeferred.resolveWith,
+                       reject: failDeferred.resolve,
+                       isRejected: failDeferred.isResolved,
+                       // Get a promise for this deferred
+                       // If obj is provided, the promise aspect is added to the object
+                       promise: function( obj , i /* internal */ ) {
+                               if ( obj == null ) {
+                                       if ( promise ) {
+                                               return promise;
+                                       }
+                                       promise = obj = {};
                                }
-
+                               i = promiseMethods.length;
+                               while( i-- ) {
+                                       obj[ promiseMethods[ i ] ] = deferred[ promiseMethods[ i ] ];
+                               }
+                               return obj;
+                       }
                } );
-               
                // Make sure only one callback list will be used
-               deferred.then( errorDeferred.cancel ).fail( cancelThen );
-               
+               deferred.then( failDeferred.cancel, deferred.cancel );
+               // Unexpose cancel
+               delete deferred.cancel;
                // Call given func if any
                if ( func ) {
-                       func.call( deferred , deferred );
+                       func.call( deferred, deferred );
                }
-               
                return deferred;
        },
 
-       // Check if an object is a deferred
-       isDeferred: function( object , method ) {
-               method = method || "then";
-               return !!( object && object[ method ] && object[ method ]._ === deferredMarker );
-       },
-       
        // Deferred helper
-       when: function( object , method ) {
-               method = method || "then";
-               object = jQuery.isDeferred( object , method ) ?
-                       object :
-                       jQuery.deferred().resolve( object );
-               object.fail = object.fail || function() { return this; };
-               object[ method ] = object[ method ] || object.then;
-               object.then = object.then || object[ method ];
-               return object;
+       when: function( object ) {
+               var args = arguments,
+                       length = args.length,
+                       deferred = length <= 1 && object && jQuery.isFunction( object.promise ) ?
+                               object :
+                               jQuery.Deferred(),
+                       promise = deferred.promise(),
+                       resolveArray;
+
+               if ( length > 1 ) {
+                       resolveArray = new Array( length );
+                       jQuery.each( args, function( index, element, args ) {
+                               jQuery.when( element ).then( function( value ) {
+                                       args = arguments;
+                                       resolveArray[ index ] = args.length > 1 ? slice.call( args, 0 ) : value;
+                                       if( ! --length ) {
+                                               deferred.resolveWith( promise, resolveArray );
+                                       }
+                               }, deferred.reject );
+                       } );
+               } else if ( deferred !== object ) {
+                       deferred.resolve( object );
+               }
+               return promise;
        },
 
        // Use of jQuery.browser is frowned upon.
@@ -952,13 +961,30 @@ 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: {}
 });
 
 // Create readyList deferred
-// also force $.fn.ready to be recognized as a defer
-readyList = jQuery._deferred( false );
-jQuery.fn.ready._ = deferredMarker;
+readyList = jQuery._Deferred();
 
 // Populate the class2type map
 jQuery.each("Boolean Number String Function Array Date RegExp Object".split(" "), function(i, name) {
@@ -982,9 +1008,8 @@ if ( indexOf ) {
        };
 }
 
-// Verify that \s matches non-breaking spaces
-// (IE fails on this test)
-if ( !rwhite.test( "\xA0" ) ) {
+// IE doesn't match non-breaking spaces with \s
+if ( rnotwhite.test( "\xA0" ) ) {
        trimLeft = /^[\s\xA0]+/;
        trimRight = /[\s\xA0]+$/;
 }
@@ -1028,11 +1053,6 @@ function doScrollCheck() {
        jQuery.ready();
 }
 
-// Expose jQuery as an Asynchronous Module
-if ( typeof define === "function" ) {
-       define( "jquery", [], function () { return jQuery; } );
-}
-
 // Expose jQuery to the global object
 return (window.jQuery = window.$ = jQuery);