X-Git-Url: http://git.asbjorn.it/?a=blobdiff_plain;f=src%2Fcore.js;h=f35e33c3e899ded1dfeed5fae2d9cd752bca3cb2;hb=0f6c7830ce5bdd31588dccdc40b6254fb4a9100f;hp=e463ade017ed2b56f5ca993afd2e59025a2e61ea;hpb=3e0cc815043c2425819743e907a0ce263a7ce164;p=jquery.git diff --git a/src/core.js b/src/core.js index e463ade..f35e33c 100644 --- 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 @@ -15,16 +15,11 @@ var jQuery = function( selector, context ) { // A central reference to the root jQuery(document) rootjQuery, - // A simple way to check for HTML strings or ID strings - // (both of which we optimize for) - quickExpr = /^(?:[^<]*(<[\w\W]+>)[^>]*$|#([\w\-]+)$)/, - - // Is it a simple selector - isSimple = /^.[^:#\[\.,]*$/, + // A simple way to check for HTML strings + quickExpr = /^[^<]*(<[\w\W]+>)[^>]*$/, // Check if a string has a non-whitespace character in it rnotwhite = /\S/, - rwhite = /\s/, // Used for trimming whitespace trimLeft = /^\s+/, @@ -60,8 +55,11 @@ var jQuery = function( selector, context ) { // Has the ready events already been bound? readyBound = false, - // The functions to execute on DOM ready - readyList = [], + // The deferred used on DOM ready + readyList, + + // Promise methods + promiseMethods = "then done fail isResolved isRejected promise".split( " " ), // The ready event handler DOMContentLoaded, @@ -78,7 +76,8 @@ 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) @@ -93,75 +92,31 @@ jQuery.fn = jQuery.prototype = { return this; } - // The body element only exists once, optimize finding it - if ( selector === "body" && !context && document.body ) { - this.context = document; - this[0] = document.body; - this.selector = "body"; - this.length = 1; - return this; - } - // Handle HTML strings if ( typeof selector === "string" ) { - // Are we dealing with HTML string or an ID? - match = quickExpr.exec( selector ); - - // Verify a match, and that no context was specified for #id - if ( match && (match[1] || !context) ) { - - // HANDLE: $(html) -> $(array) - if ( match[1] ) { - doc = (context ? context.ownerDocument || context : document); + // Are we dealing with HTML string + if ( (match = quickExpr.exec( selector )) ) { + 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 - // just do a createElement and skip the rest - ret = rsingleTag.exec( selector ); + // If a single string is passed in and it's a single tag + // just do a createElement and skip the rest + ret = rsingleTag.exec( selector ); - if ( ret ) { - if ( jQuery.isPlainObject( context ) ) { - selector = [ document.createElement( ret[1] ) ]; - jQuery.fn.attr.call( selector, context, true ); - - } else { - selector = [ doc.createElement( ret[1] ) ]; - } + if ( ret ) { + if ( jQuery.isPlainObject( context ) ) { + selector = [ document.createElement( ret[1] ) ]; + jQuery.fn.attr.call( selector, context, true ); } else { - ret = jQuery.buildFragment( [ match[1] ], [ doc ] ); - selector = (ret.cacheable ? ret.fragment.cloneNode(true) : ret.fragment).childNodes; + selector = [ doc.createElement( ret[1] ) ]; } - return jQuery.merge( this, selector ); - - // HANDLE: $("#id") } else { - elem = document.getElementById( match[2] ); - - // Check parentNode to catch when Blackberry 4.6 returns - // nodes that are no longer in the document #6963 - if ( elem && elem.parentNode ) { - // Handle the case where IE and Opera return items - // by name instead of ID - if ( elem.id !== match[2] ) { - return rootjQuery.find( selector ); - } - - // Otherwise, we inject the element directly into the jQuery object - this.length = 1; - this[0] = elem; - } - - this.context = document; - this.selector = selector; - return this; + ret = jQuery.buildFragment( [ match[1] ], [ doc ] ); + selector = (ret.cacheable ? jQuery(ret.fragment).clone()[0] : ret.fragment).childNodes; } - // 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, $(...)) @@ -171,7 +126,7 @@ 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 +177,7 @@ 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 ); @@ -253,22 +208,12 @@ jQuery.fn = jQuery.prototype = { return jQuery.each( this, callback, args ); }, - ready: function( fn ) { + ready: function() { // Attach the listeners jQuery.bindReady(); - // If the DOM is already ready - if ( jQuery.isReady ) { - // Execute the function immediately - fn.call( document, jQuery ); - - // Otherwise, remember the function for later - } else if ( readyList ) { - // Add the function to the wait list - readyList.push( fn ); - } - - return this; + // Change ready & apply + return ( jQuery.fn.ready = readyList.done ).apply( this , arguments ); }, eq: function( i ) { @@ -297,7 +242,7 @@ jQuery.fn = jQuery.prototype = { }, end: function() { - return this.prevObject || jQuery(null); + return this.prevObject || this.constructor(null); }, // For internal use only. @@ -415,23 +360,11 @@ jQuery.extend({ } // If there are functions bound, to execute - if ( readyList ) { - // Execute all of them - var fn, - i = 0, - ready = readyList; - - // Reset the list of functions - readyList = null; + readyList.fire( document , [ jQuery ] ); - while ( (fn = ready[ i++ ]) ) { - fn.call( document, jQuery ); - } - - // Trigger any bound ready events - if ( jQuery.fn.trigger ) { - jQuery( document ).trigger( "ready" ).unbind( "ready" ); - } + // Trigger any bound ready events + if ( jQuery.fn.trigger ) { + jQuery( document ).trigger( "ready" ).unbind( "ready" ); } } }, @@ -566,6 +499,28 @@ 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 @@ -578,7 +533,7 @@ jQuery.extend({ script.type = "text/javascript"; - if ( jQuery.support.scriptEval ) { + if ( jQuery.support.scriptEval() ) { script.appendChild( document.createTextNode( data ) ); } else { script.text = data; @@ -801,6 +756,178 @@ jQuery.extend({ return (new Date()).getTime(); }, + // Create a simple deferred (one callbacks list) + _Deferred: function() { + + var // callbacks list + callbacks = [], + // stored [ context , args ] + fired, + // to avoid firing when already doing so + firing, + // flag to know if the deferred has been cancelled + cancelled, + // the deferred itself + deferred = { + + // 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++ ) { + elem = args[ i ]; + type = jQuery.type( elem ); + if ( type === "array" ) { + deferred.done.apply( deferred , elem ); + } else if ( type === "function" ) { + callbacks.push( elem ); + } + } + + if ( _fired ) { + deferred.fire( _fired[ 0 ] , _fired[ 1 ] ); + } + } + + return this; + }, + + // resolve with given context and args + fire: function( context , args ) { + if ( ! cancelled && ! fired && ! firing ) { + + firing = 1; + + try { + while( callbacks[ 0 ] ) { + callbacks.shift().apply( context , args ); + } + } + finally { + fired = [ context , args ]; + firing = 0; + } + } + return this; + }, + + // resolve with this as context and given arguments + resolve: function() { + deferred.fire( jQuery.isFunction( this.promise ) ? this.promise() : this , arguments ); + return this; + }, + + // Has this deferred been resolved? + isResolved: function() { + return !!( firing || fired ); + }, + + // Cancel + cancel: function() { + cancelled = 1; + callbacks = []; + return this; + } + }; + + return deferred; + }, + + // Full fledged deferred (two callbacks list) + // Typical success/error system + 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, + fireReject: failDeferred.fire, + reject: failDeferred.resolve, + isRejected: failDeferred.isResolved, + // Get a promise for this deferred + // If obj is provided, the promise aspect is added to the object + // (i is used internally) + promise: function( obj , i ) { + 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( failDeferred.cancel , deferred.cancel ); + + // Unexpose cancel + delete deferred.cancel; + + // Call given func if any + if ( func ) { + func.call( deferred , deferred ); + } + + return deferred; + }, + + // Deferred helper + 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 ).done( function( value ) { + args = arguments; + resolveArray[ index ] = args.length > 1 ? slice.call( args , 0 ) : value; + if( ! --length ) { + deferred.fire( promise, resolveArray ); + } + }).fail( function() { + deferred.fireReject( promise, arguments ); + }); + return !deferred.isRejected(); + }); + } else if ( deferred !== object ) { + deferred.resolve( object ); + } + return promise; + }, + // Use of jQuery.browser is frowned upon. // More details: http://docs.jquery.com/Utilities/jQuery.browser uaMatch: function( ua ) { @@ -815,9 +942,31 @@ 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 +readyList = jQuery._Deferred(); + // Populate the class2type map jQuery.each("Boolean Number String Function Array Date RegExp Object".split(" "), function(i, name) { class2type[ "[object " + name + "]" ] = name.toLowerCase(); @@ -840,9 +989,8 @@ 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]+$/; } @@ -886,11 +1034,6 @@ 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);