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author | Timmy Willison <timmywillisn@gmail.com> | 2013-08-15 14:15:49 -0400 |
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committer | Timmy Willison <timmywillisn@gmail.com> | 2013-08-15 14:15:49 -0400 |
commit | 6318ae6ab90d4b450dfadf32ab95fe52ed6331cb (patch) | |
tree | 50b247fed8569e909e380b281e9145bd1458a39e /src/data.js | |
parent | 7627b8b6d9ef6e57dbd20a55b946bd1991c1223e (diff) | |
download | jquery-6318ae6ab90d4b450dfadf32ab95fe52ed6331cb.tar.gz jquery-6318ae6ab90d4b450dfadf32ab95fe52ed6331cb.zip |
AMD-ify jQuery sourcegit s! Woo! Fixes #14113, #14163.
Diffstat (limited to 'src/data.js')
-rw-r--r-- | src/data.js | 202 |
1 files changed, 10 insertions, 192 deletions
diff --git a/src/data.js b/src/data.js index 96afe6f4e..db34e2dee 100644 --- a/src/data.js +++ b/src/data.js @@ -1,3 +1,10 @@ +define([ + "./core", + "./var/rnotwhite", + "./data/var/data_priv", + "./data/var/data_user" +], function( jQuery, rnotwhite, data_priv, data_user ) { + /* Implementation Summary @@ -9,201 +16,10 @@ 5. Avoid exposing implementation details on user objects (eg. expando properties) 6. Provide a clear path for implementation upgrade to WeakMap in 2014 */ -var data_user, data_priv, - rbrace = /(?:\{[\s\S]*\}|\[[\s\S]*\])$/, +var rbrace = /(?:\{[\s\S]*\}|\[[\s\S]*\])$/, rmultiDash = /([A-Z])/g; -function Data() { - // Support: Android < 4, - // Old WebKit does not have Object.preventExtensions/freeze method, - // return new empty object instead with no [[set]] accessor - Object.defineProperty( this.cache = {}, 0, { - get: function() { - return {}; - } - }); - - this.expando = jQuery.expando + Math.random(); -} - -Data.uid = 1; - -Data.accepts = function( owner ) { - // Accepts only: - // - Node - // - Node.ELEMENT_NODE - // - Node.DOCUMENT_NODE - // - Object - // - Any - return owner.nodeType ? - owner.nodeType === 1 || owner.nodeType === 9 : true; -}; - -Data.prototype = { - key: function( owner ) { - // We can accept data for non-element nodes in modern browsers, - // but we should not, see #8335. - // Always return the key for a frozen object. - if ( !Data.accepts( owner ) ) { - return 0; - } - - var descriptor = {}, - // Check if the owner object already has a cache key - unlock = owner[ this.expando ]; - - // If not, create one - if ( !unlock ) { - unlock = Data.uid++; - - // Secure it in a non-enumerable, non-writable property - try { - descriptor[ this.expando ] = { value: unlock }; - Object.defineProperties( owner, descriptor ); - - // Support: Android < 4 - // Fallback to a less secure definition - } catch ( e ) { - descriptor[ this.expando ] = unlock; - jQuery.extend( owner, descriptor ); - } - } - - // Ensure the cache object - if ( !this.cache[ unlock ] ) { - this.cache[ unlock ] = {}; - } - - return unlock; - }, - set: function( owner, data, value ) { - var prop, - // There may be an unlock assigned to this node, - // if there is no entry for this "owner", create one inline - // and set the unlock as though an owner entry had always existed - unlock = this.key( owner ), - cache = this.cache[ unlock ]; - - // Handle: [ owner, key, value ] args - if ( typeof data === "string" ) { - cache[ data ] = value; - - // Handle: [ owner, { properties } ] args - } else { - // Fresh assignments by object are shallow copied - if ( jQuery.isEmptyObject( cache ) ) { - jQuery.extend( this.cache[ unlock ], data ); - // Otherwise, copy the properties one-by-one to the cache object - } else { - for ( prop in data ) { - cache[ prop ] = data[ prop ]; - } - } - } - return cache; - }, - get: function( owner, key ) { - // Either a valid cache is found, or will be created. - // New caches will be created and the unlock returned, - // allowing direct access to the newly created - // empty data object. A valid owner object must be provided. - var cache = this.cache[ this.key( owner ) ]; - - return key === undefined ? - cache : cache[ 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, - unlock = this.key( owner ), - cache = this.cache[ unlock ]; - - if ( key === undefined ) { - this.cache[ unlock ] = {}; - - } 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( core_rnotwhite ) || [] ); - } - } - - i = name.length; - while ( i-- ) { - delete cache[ name[ i ] ]; - } - } - }, - hasData: function( owner ) { - return !jQuery.isEmptyObject( - this.cache[ owner[ this.expando ] ] || {} - ); - }, - discard: function( owner ) { - if ( owner[ this.expando ] ) { - delete this.cache[ owner[ this.expando ] ]; - } - } -}; - -// These may be used throughout the jQuery core codebase -data_user = new Data(); -data_priv = new Data(); - - jQuery.extend({ - acceptData: Data.accepts, - hasData: function( elem ) { return data_user.hasData( elem ) || data_priv.hasData( elem ); }, @@ -354,3 +170,5 @@ function dataAttr( elem, key, data ) { } return data; } + +}); |