Revert data.js rewrite.

Reverts the following commits:

commit f717226b
Author: Rick Waldron <waldron.rick@gmail.com>
Date:   Mon Dec 31 18:06:38 2012 -0500

Only splice from internal arrays when item actually exists.

commit b9cdc413
Author: Rick Waldron <waldron.rick@gmail.com>
Date:   Mon Dec 31 16:20:35 2012 -0500

Updates to data.js re-write to pass events and manipulation

commit d1de3000
Author: Rick Waldron <waldron.rick@gmail.com>
Date:   Mon Dec 31 15:09:45 2012 -0500

2.0: Rewrite data.js

src/event.js

@@ -16,7 +16,7 @@ jQuery.event = {
 			t = 0;
 
 		// Don't attach events to noData or text/comment nodes (allow plain objects tho)
-		if ( elem.nodeType === 3 || elem.nodeType === 8 || !types || !handler || !(elemData = data_priv.get( elem )) ) {
+		if ( elem.nodeType === 3 || elem.nodeType === 8 || !types || !handler || !(elemData = jQuery._data( elem )) ) {
 			return;
 		}
 
@@ -124,7 +124,7 @@ jQuery.event = {
 		var tns, type, origType, namespaces, origCount,
 			j, events, special, eventType, handleObj,
 			t = 0,
-			elemData = data_priv.hasData( elem ) && data_priv.get( elem );
+			elemData = jQuery.hasData( elem ) && jQuery._data( elem );
 
 		if ( !elemData || !(events = elemData.events) ) {
 			return;

src/manipulation.js

@@ -327,7 +327,7 @@ jQuery.fn.extend({
 					for ( i = 0; i < hasScripts; i++ ) {
 						node = scripts[ i ];
 						if ( rscriptType.test( node.type || "" ) &&
-							!data_priv.access( node, "globalEval" ) && jQuery.contains( doc, node ) ) {
+							!jQuery._data( node, "globalEval" ) && jQuery.contains( doc, node ) ) {
 
 							if ( node.src ) {
 								// Hope ajax is available...
@@ -514,16 +514,20 @@ jQuery.extend({
 	},
 
 	cleanData: function( elems, /* internal */ acceptData ) {
-		var data, elem, type,
+		var id, data, elem, type,
 			l = elems.length,
 			i = 0,
+			internalKey = jQuery.expando,
+			cache = jQuery.cache,
 			special = jQuery.event.special;
 
 		for ( ; i < l; i++ ) {
 			elem = elems[ i ];
 
 			if ( acceptData || jQuery.acceptData( elem ) ) {
-				data = data_priv.access( elem );
+
+				id = elem[ internalKey ];
+				data = id && cache[ id ];
 
 				if ( data ) {
 					for ( type in data.events ) {
@@ -535,12 +539,14 @@ jQuery.extend({
 							jQuery.removeEvent( elem, type, data.handle );
 						}
 					}
+
+					// Remove cache only if it was not already removed by jQuery.event.remove
+					if ( cache[ id ] ) {
+						delete cache[ id ];
+						delete elem[ internalKey ];
+					}
 				}
 			}
-
-			// Discard any remaining `private` and `user` data
-			// (Splices the data objects out of the internal cache arrays)
-			data_discard( elem );
 		}
 	}
 });
@@ -574,30 +580,24 @@ function setGlobalEval( elems, refElements ) {
 		i = 0;
 
 	for ( ; i < l; i++ ) {
-		data_priv.set(
-			elems[ i ], "globalEval", !refElements || data_priv.get( refElements[ i ], "globalEval" )
-		);
+		jQuery._data( elems[ i ], "globalEval", !refElements || jQuery._data( refElements[ i ], "globalEval" ) );
 	}
 }
 
 function cloneCopyEvent( src, dest ) {
-	var i, l, type, pOld, pCur, uOld, uCur, events;
 
-	if ( dest.nodeType !== 1 ) {
+	if ( dest.nodeType !== 1 || !jQuery.hasData( src ) ) {
 		return;
 	}
 
-	// 1. Copy private data: events, handlers, etc.
-	if ( data_priv.hasData( src ) ) {
-		pOld = data_priv.access( src );
-		pCur = jQuery.extend( {}, pOld );
-		events = pOld.events;
-
-		data_priv.set( dest, pCur );
+	var i, l, type,
+		oldData = jQuery._data( src ),
+		curData = jQuery._data( dest, oldData ),
+		events = oldData.events;
 
 	if ( events ) {
-			delete pCur.handle;
-			pCur.events = {};
+		delete curData.handle;
+		curData.events = {};
 
 		for ( type in events ) {
 			for ( i = 0, l = events[ type ].length; i < l; i++ ) {
@@ -605,14 +605,10 @@ function cloneCopyEvent( src, dest ) {
 			}
 		}
 	}
-	}
-
-	// 2. Copy user data
-	if ( data_user.hasData( src ) ) {
-		uOld = data_user.access( src );
-		uCur = jQuery.extend( {}, uOld );
 
-		data_user.set( dest, uCur );
+	// make the cloned public data object a copy from the original
+	if ( curData.data ) {
+		curData.data = jQuery.extend( {}, curData.data );
 	}
 }
 

test/data/testrunner.js

@@ -200,8 +200,6 @@ var Globals = (function() {
 	 */
 	QUnit.expectJqData = function( elems, key ) {
 		var i, elem, expando;
-
-		if ( jQuery.cache ) {
 		QUnit.current_testEnvironment.checkJqData = true;
 
 		if ( elems.jquery && elems.toArray ) {
@@ -243,8 +241,6 @@ var Globals = (function() {
 				}
 			}
 		}
-		}
-
 	};
 	QUnit.config.urlConfig.push( {
 		id: "jqdata",
@@ -262,7 +258,6 @@ var Globals = (function() {
 			fragmentsLength = 0,
 			cacheLength = 0;
 
-		if ( jQuery.cache ) {
 		// Only look for jQuery data problems if this test actually
 		// provided some information to compare against.
 		if ( QUnit.urlParams.jqdata || this.checkJqData ) {
@@ -284,17 +279,13 @@ var Globals = (function() {
 
 		// Reset data register
 		expectedDataKeys = {};
-		}
-
 
 		// Allow QUnit.reset to clean up any attached elements before checking for leaks
 		QUnit.reset();
 
-		if ( jQuery.cache ) {
 		for ( i in jQuery.cache ) {
 			++cacheLength;
 		}
-		}
 
 		jQuery.fragments = {};
 

test/unit/data.js

-module( "data", { teardown: moduleTeardown });
+module("data", { teardown: moduleTeardown });
 
-test( "expando", function() {
+test("expando", function(){
 	expect(1);
 
 	equal(jQuery.expando !== undefined, true, "jQuery is exposing the expando");
 });
 
-test( "jQuery.data & removeData, expected returns", function() {
-	expect(2);
-
-	equal(
-		jQuery.data( document.body, "hello", "world" ), "world",
-		"jjQuery.data( elem, key, value ) returns value"
-	);
-	equal(
-		jQuery.removeData( document.body, "hello" ), undefined,
-		"jjQuery.removeData( elem, key, value ) returns undefined"
-	);
-
-});
-
-test( "jQuery._data & _removeData, expected returns", function() {
-	expect(2);
-
-	equal(
-		jQuery._data( document.body, "hello", "world" ), "world",
-		"jjQuery.data( elem, key, value ) returns value"
-	);
-	equal(
-		jQuery._removeData( document.body, "hello" ), undefined,
-		"jjQuery.removeData( elem, key, value ) returns undefined"
-	);
-});
-
 function dataTests (elem) {
 	var oldCacheLength, dataObj, internalDataObj, expected, actual;
 
@@ -126,7 +99,6 @@ test("jQuery.data(document)", 25, function() {
 	QUnit.expectJqData(document, "foo");
 });
 
-/*
 test("Expando cleanup", 4, function() {
 	var expected, actual,
 		div = document.createElement("div");
@@ -160,8 +132,7 @@ test("Expando cleanup", 4, function() {
 	// Clean up unattached element
 	jQuery(div).remove();
 });
-*/
-/*
+
 test("jQuery.acceptData", function() {
 	expect(7);
 
@@ -179,7 +150,7 @@ test("jQuery.acceptData", function() {
 	applet.setAttribute("classid", "clsid:8AD9C840-044E-11D1-B3E9-00805F499D93");
 	ok( !jQuery.acceptData( applet ), "applet" );
 });
-*/
+
 test(".data()", function() {
 	expect(5);
 
@@ -494,8 +465,8 @@ test("jQuery.data should follow html5 specification regarding camel casing", fun
 
 	div.data("foo-bar", "d");
 
-	equal( div.data("fooBar"), "d", "Verify updated data-* key (fooBar)" );
-	equal( div.data("foo-bar"), "d", "Verify updated data-* key (foo-bar)" );
+	equal( div.data("fooBar"), "d", "Verify updated data-* key" );
+	equal( div.data("foo-bar"), "d", "Verify updated data-* key" );
 
 	div.remove();
 });