--- /dev/null
+define( [
+ "../core",
+ "../var/rnotwhite",
+ "./var/acceptData"
+], function( jQuery, rnotwhite, acceptData ) {
+
+function Data() {
+ this.expando = jQuery.expando + Data.uid++;
+}
+
+Data.uid = 1;
+
+Data.prototype = {
+
+ register: function( owner, initial ) {
+ var value = initial || {};
+
+ // If it is a node unlikely to be stringify-ed or looped over
+ // use plain assignment
+ if ( owner.nodeType ) {
+ owner[ this.expando ] = value;
+
+ // Otherwise secure it in a non-enumerable, non-writable property
+ // configurability must be true to allow the property to be
+ // deleted with the delete operator
+ } else {
+ Object.defineProperty( owner, this.expando, {
+ value: value,
+ writable: true,
+ configurable: true
+ } );
+ }
+ return owner[ this.expando ];
+ },
+ cache: function( owner ) {
+
+ // We can accept data for non-element nodes in modern browsers,
+ // but we should not, see #8335.
+ // Always return an empty object.
+ if ( !acceptData( owner ) ) {
+ return {};
+ }
+
+ // Check if the owner object already has a cache
+ var value = owner[ this.expando ];
+
+ // If not, create one
+ if ( !value ) {
+ value = {};
+
+ // We can accept data for non-element nodes in modern browsers,
+ // but we should not, see #8335.
+ // Always return an empty object.
+ if ( acceptData( owner ) ) {
+
+ // If it is a node unlikely to be stringify-ed or looped over
+ // use plain assignment
+ if ( owner.nodeType ) {
+ owner[ this.expando ] = value;
+
+ // Otherwise secure it in a non-enumerable property
+ // configurable must be true to allow the property to be
+ // deleted when data is removed
+ } else {
+ Object.defineProperty( owner, this.expando, {
+ value: value,
+ configurable: true
+ } );
+ }
+ }
+ }
+
+ return value;
+ },
+ set: function( owner, data, value ) {
+ var prop,
+ cache = this.cache( owner );
+
+ // Handle: [ owner, key, value ] args
+ if ( typeof data === "string" ) {
+ cache[ data ] = value;
+
+ // Handle: [ owner, { properties } ] args
+ } else {
+
+ // Copy the properties one-by-one to the cache object
+ for ( prop in data ) {
+ cache[ prop ] = data[ prop ];
+ }
+ }
+ return cache;
+ },
+ get: function( owner, key ) {
+ return key === undefined ?
+ this.cache( owner ) :
+ owner[ this.expando ] && owner[ this.expando ][ key ];
+ },
+ access: function( owner, key, value ) {
+ var stored;
+
+ // In cases where either:
+ //
+ // 1. No key was specified
+ // 2. A string key was specified, but no value provided
+ //
+ // Take the "read" path and allow the get method to determine
+ // which value to return, respectively either:
+ //
+ // 1. The entire cache object
+ // 2. The data stored at the key
+ //
+ if ( key === undefined ||
+ ( ( key && typeof key === "string" ) && value === undefined ) ) {
+
+ stored = this.get( owner, key );
+
+ return stored !== undefined ?
+ stored : this.get( owner, jQuery.camelCase( key ) );
+ }
+
+ // When the key is not a string, or both a key and value
+ // are specified, set or extend (existing objects) with either:
+ //
+ // 1. An object of properties
+ // 2. A key and value
+ //
+ this.set( owner, key, value );
+
+ // Since the "set" path can have two possible entry points
+ // return the expected data based on which path was taken[*]
+ return value !== undefined ? value : key;
+ },
+ remove: function( owner, key ) {
+ var i, name, camel,
+ cache = owner[ this.expando ];
+
+ if ( cache === undefined ) {
+ return;
+ }
+
+ if ( key === undefined ) {
+ this.register( owner );
+
+ } else {
+
+ // Support array or space separated string of keys
+ if ( jQuery.isArray( key ) ) {
+
+ // If "name" is an array of keys...
+ // When data is initially created, via ("key", "val") signature,
+ // keys will be converted to camelCase.
+ // Since there is no way to tell _how_ a key was added, remove
+ // both plain key and camelCase key. #12786
+ // This will only penalize the array argument path.
+ name = key.concat( key.map( jQuery.camelCase ) );
+ } else {
+ camel = jQuery.camelCase( key );
+
+ // Try the string as a key before any manipulation
+ if ( key in cache ) {
+ name = [ key, camel ];
+ } else {
+
+ // If a key with the spaces exists, use it.
+ // Otherwise, create an array by matching non-whitespace
+ name = camel;
+ name = name in cache ?
+ [ name ] : ( name.match( rnotwhite ) || [] );
+ }
+ }
+
+ i = name.length;
+
+ while ( i-- ) {
+ delete cache[ name[ i ] ];
+ }
+ }
+
+ // Remove the expando if there's no more data
+ if ( key === undefined || jQuery.isEmptyObject( cache ) ) {
+
+ // Support: Chrome <= 35-45+
+ // Webkit & Blink performance suffers when deleting properties
+ // from DOM nodes, so set to undefined instead
+ // https://code.google.com/p/chromium/issues/detail?id=378607
+ if ( owner.nodeType ) {
+ owner[ this.expando ] = undefined;
+ } else {
+ delete owner[ this.expando ];
+ }
+ }
+ },
+ hasData: function( owner ) {
+ var cache = owner[ this.expando ];
+ return cache !== undefined && !jQuery.isEmptyObject( cache );
+ }
+};
+
+return Data;
+} );
Code Review / portal.git / blobdiff