X-Git-Url: http://git.asbjorn.biz/?p=jquery.git;a=blobdiff_plain;f=src%2Fdata.js;h=4d1d1bd55615ba2944c9cfa9b44dbdd93c307f2d;hp=20c134a6d85a7186e350c74b12e4f26aa2c87a25;hb=1d1d4fe112c49cbd704d880b27cc646f2bfe1737;hpb=98c7248518f9a2082ccf50240b5ab44bf98d7b5e

diff --git a/src/data.js b/src/data.js
index 20c134a..4d1d1bd 100644
--- a/src/data.js
+++ b/src/data.js
@@ -1,20 +1,37 @@
-var expando = "jQuery" + now(), uuid = 0, windowData = {};
+(function( jQuery ) {
+
+var windowData = {},
+	rbrace = /^(?:\{.*\}|\[.*\])$/;
 
 jQuery.extend({
 	cache: {},
-	
-	expando:expando,
+
+	// Please use with caution
+	uuid: 0,
+
+	// Unique for each copy of jQuery on the page
+	// Non-digits removed to match rinlinejQuery
+	expando: "jQuery" + ( jQuery.fn.jquery + Math.random() ).replace( /\D/g, "" ),
 
 	// The following elements throw uncatchable exceptions if you
 	// attempt to add expando properties to them.
 	noData: {
 		"embed": true,
-		"object": true,
+		// Ban all objects except for Flash (which handle expandos)
+		"object": "clsid:D27CDB6E-AE6D-11cf-96B8-444553540000",
 		"applet": true
 	},
 
+	hasData: function( elem ) {
+		if ( elem.nodeType ) {
+			elem = jQuery.cache[ elem[jQuery.expando] ];
+		}
+
+		return !!elem && !jQuery.isEmptyObject(elem);
+	},
+
 	data: function( elem, name, data ) {
-		if ( elem.nodeName && jQuery.noData[elem.nodeName.toLowerCase()] ) {
+		if ( !jQuery.acceptData( elem ) ) {
 			return;
 		}
 
@@ -22,29 +39,38 @@ jQuery.extend({
 			windowData :
 			elem;
 
-		var id = elem[ expando ], cache = jQuery.cache, thisCache;
+		var isNode = elem.nodeType,
+			id = isNode ? elem[ jQuery.expando ] : null,
+			cache = jQuery.cache, thisCache;
 
-		if ( !id && typeof name === "string" && data === undefined ) {
-			return null;
+		if ( isNode && !id && typeof name === "string" && data === undefined ) {
+			return;
 		}
 
+		// Get the data from the object directly
+		if ( !isNode ) {
+			cache = elem;
+
 		// Compute a unique ID for the element
-		if ( !id ) { 
-			id = ++uuid;
+		} else if ( !id ) {
+			elem[ jQuery.expando ] = id = ++jQuery.uuid;
 		}
 
 		// Avoid generating a new cache unless none exists and we
 		// want to manipulate it.
 		if ( typeof name === "object" ) {
-			elem[ expando ] = id;
-			thisCache = cache[ id ] = jQuery.extend(true, {}, name);
+			if ( isNode ) {
+				cache[ id ] = jQuery.extend(cache[ id ], name);
 
-		} else if ( !cache[ id ] ) {
-			elem[ expando ] = id;
+			} else {
+				jQuery.extend( cache, name );
+			}
+
+		} else if ( isNode && !cache[ id ] ) {
 			cache[ id ] = {};
 		}
 
-		thisCache = cache[ id ];
+		thisCache = isNode ? cache[ id ] : cache;
 
 		// Prevent overriding the named cache with undefined values
 		if ( data !== undefined ) {
@@ -55,7 +81,7 @@ jQuery.extend({
 	},
 
 	removeData: function( elem, name ) {
-		if ( elem.nodeName && jQuery.noData[elem.nodeName.toLowerCase()] ) {
+		if ( !jQuery.acceptData( elem ) ) {
 			return;
 		}
 
@@ -63,7 +89,10 @@ jQuery.extend({
 			windowData :
 			elem;
 
-		var id = elem[ expando ], cache = jQuery.cache, thisCache = cache[ id ];
+		var isNode = elem.nodeType,
+			id = isNode ? elem[ jQuery.expando ] : elem,
+			cache = jQuery.cache,
+			thisCache = isNode ? cache[ id ] : id;
 
 		// If we want to remove a specific section of the element's data
 		if ( name ) {
@@ -72,34 +101,68 @@ jQuery.extend({
 				delete thisCache[ name ];
 
 				// If we've removed all the data, remove the element's cache
-				if ( jQuery.isEmptyObject(thisCache) ) {
+				if ( isNode && jQuery.isEmptyObject(thisCache) ) {
 					jQuery.removeData( elem );
 				}
 			}
 
 		// Otherwise, we want to remove all of the element's data
 		} else {
-			// Clean up the element expando
-			try {
-				delete elem[ expando ];
-			} catch( e ) {
-				// IE has trouble directly removing the expando
-				// but it's ok with using removeAttribute
-				if ( elem.removeAttribute ) {
-					elem.removeAttribute( expando );
+			if ( isNode && jQuery.support.deleteExpando ) {
+				delete elem[ jQuery.expando ];
+
+			} else if ( elem.removeAttribute ) {
+				elem.removeAttribute( jQuery.expando );
+
+			// Completely remove the data cache
+			} else if ( isNode ) {
+				delete cache[ id ];
+
+			// Remove all fields from the object
+			} else {
+				for ( var n in elem ) {
+					delete elem[ n ];
 				}
 			}
+		}
+	},
 
-			// Completely remove the data cache
-			delete cache[ id ];
+	// A method for determining if a DOM node can handle the data expando
+	acceptData: function( elem ) {
+		if ( elem.nodeName ) {
+			var match = jQuery.noData[ elem.nodeName.toLowerCase() ];
+
+			if ( match ) {
+				return !(match === true || elem.getAttribute("classid") !== match);
+			}
 		}
+
+		return true;
 	}
 });
 
 jQuery.fn.extend({
 	data: function( key, value ) {
-		if ( typeof key === "undefined" && this.length ) {
-			return jQuery.data( this[0] );
+		var data = null;
+
+		if ( typeof key === "undefined" ) {
+			if ( this.length ) {
+				data = jQuery.data( this[0] );
+
+				if ( this[0].nodeType === 1 ) {
+					var attr = this[0].attributes, name;
+					for ( var i = 0, l = attr.length; i < l; i++ ) {
+						name = attr[i].name;
+
+						if ( name.indexOf( "data-" ) === 0 ) {
+							name = name.substr( 5 );
+							dataAttr( this[0], name, data[ name ] );
+						}
+					}
+				}
+			}
+
+			return data;
 
 		} else if ( typeof key === "object" ) {
 			return this.each(function() {
@@ -111,17 +174,26 @@ jQuery.fn.extend({
 		parts[1] = parts[1] ? "." + parts[1] : "";
 
 		if ( value === undefined ) {
-			var data = this.triggerHandler("getData" + parts[1] + "!", [parts[0]]);
+			data = this.triggerHandler("getData" + parts[1] + "!", [parts[0]]);
 
+			// Try to fetch any internally stored data first
 			if ( data === undefined && this.length ) {
 				data = jQuery.data( this[0], key );
+				data = dataAttr( this[0], key, data );
 			}
+
 			return data === undefined && parts[1] ?
 				this.data( parts[0] ) :
 				data;
+
 		} else {
-			return this.trigger("setData" + parts[1] + "!", [parts[0], value]).each(function() {
+			return this.each(function() {
+				var $this = jQuery( this ),
+					args = [ parts[0], value ];
+
+				$this.triggerHandler( "setData" + parts[1] + "!", args );
 				jQuery.data( this, key, value );
+				$this.triggerHandler( "changeData" + parts[1] + "!", args );
 			});
 		}
 	},
@@ -133,21 +205,31 @@ jQuery.fn.extend({
 	}
 });
 
-var removeExpando = function( elem ) {
-	delete elem[ expando ];
-};
-
-try {
-	var div = document.createElement("div");
-	div[ expando ] = true;
-	delete div[ expando ];
-	
-} catch( e ) {
-	// IE has trouble directly removing the expando
-	// but it's ok with using removeAttribute
-	removeExpando = function( elem ) {
-		if ( elem.removeAttribute ) {
-			elem.removeAttribute( expando );
+function dataAttr( elem, key, data ) {
+	// If nothing was found internally, try to fetch any
+	// data from the HTML5 data-* attribute
+	if ( data === undefined && elem.nodeType === 1 ) {
+		data = elem.getAttribute( "data-" + key );
+
+		if ( typeof data === "string" ) {
+			try {
+				data = data === "true" ? true :
+				data === "false" ? false :
+				data === "null" ? null :
+				!jQuery.isNaN( data ) ? parseFloat( data ) :
+					rbrace.test( data ) ? jQuery.parseJSON( data ) :
+					data;
+			} catch( e ) {}
+
+			// Make sure we set the data so it isn't changed later
+			jQuery.data( elem, key, data );
+
+		} else {
+			data = undefined;
 		}
-	};
-}
\ No newline at end of file
+	}
+
+	return data;
+}
+
+})( jQuery );