X-Git-Url: http://git.asbjorn.biz/?a=blobdiff_plain;f=src%2Fdata.js;h=500f7ea43f0508c41410e28eff2b661b85dd6991;hb=67d445a703491c90a7d3c46be34bcdceb4d1c896;hp=ac069ceea593910ee60e0c3178f88e345c4c68c0;hpb=f8ef75eb9124ce924be5fb521c783efd5c996e33;p=jquery.git

diff --git a/src/data.js b/src/data.js
index ac069ce..500f7ea 100644
--- a/src/data.js
+++ b/src/data.js
@@ -1,32 +1,45 @@
 var expando = "jQuery" + now(), uuid = 0, windowData = {};
+var emptyObject = {};
 
 jQuery.extend({
 	cache: {},
+	
+	expando:expando,
 
 	data: function( elem, name, data ) {
 		elem = elem == window ?
 			windowData :
 			elem;
 
-		var id = elem[ expando ];
+		var id = elem[ expando ], cache = jQuery.cache, thisCache;
 
-		// Compute a unique ID for the element
-		if ( !id )
-			id = elem[ expando ] = ++uuid;
+		// Handle the case where there's no name immediately
+		if ( !name && !id ) {
+			return null;
+		}
 
-		// Only generate the data cache if we're
-		// trying to access or manipulate it
-		if ( name && !jQuery.cache[ id ] )
-			jQuery.cache[ id ] = {};
+		// Compute a unique ID for the element
+		if ( !id ) { 
+			id = ++uuid;
+		}
 
+		// Avoid generating a new cache unless none exists and we
+		// want to manipulate it.
+		if ( cache[ id ] ) {
+			thisCache = cache[ id ];
+		} else if ( typeof data === "undefined" ) {
+			thisCache = emptyObject;
+		} else {
+			thisCache = cache[ id ] = {};
+		}
+		
 		// Prevent overriding the named cache with undefined values
-		if ( data !== undefined )
-			jQuery.cache[ id ][ name ] = data;
-
-		// Return the named cache data, or the ID for the element
-		return name ?
-			jQuery.cache[ id ][ name ] :
-			id;
+		if ( data !== undefined ) {
+			elem[ expando ] = id;
+			thisCache[ name ] = data;
+		}
+		
+		return name ? thisCache[ name ] : thisCache;
 	},
 
 	removeData: function( elem, name ) {
@@ -34,22 +47,18 @@ jQuery.extend({
 			windowData :
 			elem;
 
-		var id = elem[ expando ];
+		var id = elem[ expando ], cache = jQuery.cache, thisCache = cache[ id ];
 
 		// If we want to remove a specific section of the element's data
 		if ( name ) {
-			if ( jQuery.cache[ id ] ) {
+			if ( thisCache ) {
 				// Remove the section of cache data
-				delete jQuery.cache[ id ][ name ];
+				delete thisCache[ name ];
 
 				// If we've removed all the data, remove the element's cache
-				name = "";
-
-				for ( name in jQuery.cache[ id ] )
-					break;
-
-				if ( !name )
+				if ( jQuery.isEmptyObject(thisCache) ) {
 					jQuery.removeData( elem );
+				}
 			}
 
 		// Otherwise, we want to remove all of the element's data
@@ -57,47 +66,60 @@ jQuery.extend({
 			// Clean up the element expando
 			try {
 				delete elem[ expando ];
-			} catch(e){
+			} catch( e ) {
 				// IE has trouble directly removing the expando
 				// but it's ok with using removeAttribute
-				if ( elem.removeAttribute )
+				if ( elem.removeAttribute ) {
 					elem.removeAttribute( expando );
+				}
 			}
 
 			// Completely remove the data cache
-			delete jQuery.cache[ id ];
+			delete cache[ id ];
 		}
 	},
+	
 	queue: function( elem, type, data ) {
-		if ( elem ){
+		if( !elem ) return;
 
-			type = (type || "fx") + "queue";
+		type = (type || "fx") + "queue";
+		var q = jQuery.data( elem, type );
 
-			var q = jQuery.data( elem, type );
+		// Speed up dequeue by getting out quickly if this is just a lookup
+		if( !data ) return q || [];
 
-			if ( !q || jQuery.isArray(data) )
-				q = jQuery.data( elem, type, jQuery.makeArray(data) );
-			else if( data )
-				q.push( data );
+		if ( !q || jQuery.isArray(data) )
+			q = jQuery.data( elem, type, jQuery.makeArray(data) );
+		else
+			q.push( data );
 
-		}
 		return q;
 	},
 
 	dequeue: function( elem, type ){
-		var queue = jQuery.queue( elem, type ),
-			fn = queue.shift();
+		type = type || "fx";
+
+		var queue = jQuery.queue( elem, type ), fn = queue.shift();
+
+		// If the fx queue is dequeued, always remove the progress sentinel
+		if( fn === "inprogress" ) fn = queue.shift();
 
-		if( !type || type === "fx" )
-			fn = queue[0];
+		if( fn ) {
+			// Add a progress sentinel to prevent the fx queue from being
+			// automatically dequeued
+			if( type == "fx" ) queue.unshift("inprogress");
 
-		if( fn !== undefined )
-			fn.call(elem);
+			fn.call(elem, function() { jQuery.dequeue(elem, type); });
+		}
 	}
 });
 
 jQuery.fn.extend({
 	data: function( key, value ){
+		if ( typeof key === "undefined" && this.length ) {
+			return jQuery.data( this[0] );
+		}
+
 		var parts = key.split(".");
 		parts[1] = parts[1] ? "." + parts[1] : "";
 
@@ -130,16 +152,19 @@ jQuery.fn.extend({
 		if ( data === undefined )
 			return jQuery.queue( this[0], type );
 
-		return this.each(function(){
+		return this.each(function(i, elem){
 			var queue = jQuery.queue( this, type, data );
 
-			 if( type == "fx" && queue.length == 1 )
-				queue[0].call(this);
+			if( type == "fx" && queue[0] !== "inprogress" )
+				jQuery.dequeue( this, type )
 		});
 	},
 	dequeue: function(type){
 		return this.each(function(){
 			jQuery.dequeue( this, type );
 		});
+	},
+	clearQueue: function(type){
+		return this.queue( type || "fx", [] );
 	}
-});
\ No newline at end of file
+});