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define( [
"./core",
"./var/deletedIds",
"./data/support",
"./data/var/acceptData"
], function( jQuery, deletedIds, support, acceptData ) {
var rbrace = /^(?:\{[\w\W]*\}|\[[\w\W]*\])$/,
rmultiDash = /([A-Z])/g;
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 ) {
var name = "data-" + key.replace( rmultiDash, "-$1" ).toLowerCase();
data = elem.getAttribute( name );
if ( typeof data === "string" ) {
try {
data = data === "true" ? true :
data === "false" ? false :
data === "null" ? null :
// Only convert to a number if it doesn't change the string
+data + "" === data ? +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;
}
}
return data;
}
// checks a cache object for emptiness
function isEmptyDataObject( obj ) {
var name;
for ( name in obj ) {
// if the public data object is empty, the private is still empty
if ( name === "data" && jQuery.isEmptyObject( obj[ name ] ) ) {
continue;
}
if ( name !== "toJSON" ) {
return false;
}
}
return true;
}
function internalData( elem, name, data, pvt /* Internal Use Only */ ) {
if ( !acceptData( elem ) ) {
return;
}
var ret, thisCache,
internalKey = jQuery.expando,
// We have to handle DOM nodes and JS objects differently because IE6-7
// can't GC object references properly across the DOM-JS boundary
isNode = elem.nodeType,
// Only DOM nodes need the global jQuery cache; JS object data is
// attached directly to the object so GC can occur automatically
cache = isNode ? jQuery.cache : elem,
// Only defining an ID for JS objects if its cache already exists allows
// the code to shortcut on the same path as a DOM node with no cache
id = isNode ? elem[ internalKey ] : elem[ internalKey ] && internalKey;
// Avoid doing any more work than we need to when trying to get data on an
// object that has no data at all
if ( ( !id || !cache[ id ] || ( !pvt && !cache[ id ].data ) ) &&
data === undefined && typeof name === "string" ) {
return;
}
if ( !id ) {
// Only DOM nodes need a new unique ID for each element since their data
// ends up in the global cache
if ( isNode ) {
id = elem[ internalKey ] = deletedIds.pop() || jQuery.guid++;
} else {
id = internalKey;
}
}
if ( !cache[ id ] ) {
// Avoid exposing jQuery metadata on plain JS objects when the object
// is serialized using JSON.stringify
cache[ id ] = isNode ? {} : { toJSON: jQuery.noop };
}
// An object can be passed to jQuery.data instead of a key/value pair; this gets
// shallow copied over onto the existing cache
if ( typeof name === "object" || typeof name === "function" ) {
if ( pvt ) {
cache[ id ] = jQuery.extend( cache[ id ], name );
} else {
cache[ id ].data = jQuery.extend( cache[ id ].data, name );
}
}
thisCache = cache[ id ];
// jQuery data() is stored in a separate object inside the object's internal data
// cache in order to avoid key collisions between internal data and user-defined
// data.
if ( !pvt ) {
if ( !thisCache.data ) {
thisCache.data = {};
}
thisCache = thisCache.data;
}
if ( data !== undefined ) {
thisCache[ jQuery.camelCase( name ) ] = data;
}
// Check for both converted-to-camel and non-converted data property names
// If a data property was specified
if ( typeof name === "string" ) {
// First Try to find as-is property data
ret = thisCache[ name ];
// Test for null|undefined property data
if ( ret == null ) {
// Try to find the camelCased property
ret = thisCache[ jQuery.camelCase( name ) ];
}
} else {
ret = thisCache;
}
return ret;
}
function internalRemoveData( elem, name, pvt ) {
if ( !acceptData( elem ) ) {
return;
}
var thisCache, i,
isNode = elem.nodeType,
// See jQuery.data for more information
cache = isNode ? jQuery.cache : elem,
id = isNode ? elem[ jQuery.expando ] : jQuery.expando;
// If there is already no cache entry for this object, there is no
// purpose in continuing
if ( !cache[ id ] ) {
return;
}
if ( name ) {
thisCache = pvt ? cache[ id ] : cache[ id ].data;
if ( thisCache ) {
// Support array or space separated string names for data keys
if ( !jQuery.isArray( name ) ) {
// try the string as a key before any manipulation
if ( name in thisCache ) {
name = [ name ];
} else {
// split the camel cased version by spaces unless a key with the spaces exists
name = jQuery.camelCase( name );
if ( name in thisCache ) {
name = [ name ];
} else {
name = name.split( " " );
}
}
} else {
// 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 = name.concat( jQuery.map( name, jQuery.camelCase ) );
}
i = name.length;
while ( i-- ) {
delete thisCache[ name[ i ] ];
}
// If there is no data left in the cache, we want to continue
// and let the cache object itself get destroyed
if ( pvt ? !isEmptyDataObject( thisCache ) : !jQuery.isEmptyObject( thisCache ) ) {
return;
}
}
}
// See jQuery.data for more information
if ( !pvt ) {
delete cache[ id ].data;
// Don't destroy the parent cache unless the internal data object
// had been the only thing left in it
if ( !isEmptyDataObject( cache[ id ] ) ) {
return;
}
}
// Destroy the cache
if ( isNode ) {
jQuery.cleanData( [ elem ], true );
// Use delete when supported for expandos or `cache` is not a window per isWindow (#10080)
/* jshint eqeqeq: false */
} else if ( support.deleteExpando || cache != cache.window ) {
/* jshint eqeqeq: true */
delete cache[ id ];
// When all else fails, undefined
} else {
cache[ id ] = undefined;
}
}
jQuery.extend( {
cache: {},
// The following elements (space-suffixed to avoid Object.prototype collisions)
// throw uncatchable exceptions if you attempt to set expando properties
noData: {
"applet ": true,
"embed ": true,
// ...but Flash objects (which have this classid) *can* handle expandos
"object ": "clsid:D27CDB6E-AE6D-11cf-96B8-444553540000"
},
hasData: function( elem ) {
elem = elem.nodeType ? jQuery.cache[ elem[ jQuery.expando ] ] : elem[ jQuery.expando ];
return !!elem && !isEmptyDataObject( elem );
},
data: function( elem, name, data ) {
return internalData( elem, name, data );
},
removeData: function( elem, name ) {
return internalRemoveData( elem, name );
},
// For internal use only.
_data: function( elem, name, data ) {
return internalData( elem, name, data, true );
},
_removeData: function( elem, name ) {
return internalRemoveData( elem, name, true );
}
} );
jQuery.fn.extend( {
data: function( key, value ) {
var i, name, data,
elem = this[ 0 ],
attrs = elem && elem.attributes;
// Special expections of .data basically thwart jQuery.access,
// so implement the relevant behavior ourselves
// Gets all values
if ( key === undefined ) {
if ( this.length ) {
data = jQuery.data( elem );
if ( elem.nodeType === 1 && !jQuery._data( elem, "parsedAttrs" ) ) {
i = attrs.length;
while ( i-- ) {
// Support: IE11+
// The attrs elements can be null (#14894)
if ( attrs[ i ] ) {
name = attrs[ i ].name;
if ( name.indexOf( "data-" ) === 0 ) {
name = jQuery.camelCase( name.slice( 5 ) );
dataAttr( elem, name, data[ name ] );
}
}
}
jQuery._data( elem, "parsedAttrs", true );
}
}
return data;
}
// Sets multiple values
if ( typeof key === "object" ) {
return this.each( function() {
jQuery.data( this, key );
} );
}
return arguments.length > 1 ?
// Sets one value
this.each( function() {
jQuery.data( this, key, value );
} ) :
// Gets one value
// Try to fetch any internally stored data first
elem ? dataAttr( elem, key, jQuery.data( elem, key ) ) : undefined;
},
removeData: function( key ) {
return this.each( function() {
jQuery.removeData( this, key );
} );
}
} );
return jQuery;
} );