diff options
Diffstat (limited to 'node_modules/jquery/src/data/Data.js')
-rw-r--r-- | node_modules/jquery/src/data/Data.js | 200 |
1 files changed, 200 insertions, 0 deletions
diff --git a/node_modules/jquery/src/data/Data.js b/node_modules/jquery/src/data/Data.js new file mode 100644 index 0000000000..0e29c1fc63 --- /dev/null +++ b/node_modules/jquery/src/data/Data.js @@ -0,0 +1,200 @@ +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; +} ); |