/groupChat/node_modules/jquery/src/data.js |
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define( [ |
"./core", |
"./core/access", |
"./core/camelCase", |
"./data/var/dataPriv", |
"./data/var/dataUser" |
], function( jQuery, access, camelCase, dataPriv, dataUser ) { |
|
"use strict"; |
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// Implementation Summary |
// |
// 1. Enforce API surface and semantic compatibility with 1.9.x branch |
// 2. Improve the module's maintainability by reducing the storage |
// paths to a single mechanism. |
// 3. Use the same single mechanism to support "private" and "user" data. |
// 4. _Never_ expose "private" data to user code (TODO: Drop _data, _removeData) |
// 5. Avoid exposing implementation details on user objects (eg. expando properties) |
// 6. Provide a clear path for implementation upgrade to WeakMap in 2014 |
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var rbrace = /^(?:\{[\w\W]*\}|\[[\w\W]*\])$/, |
rmultiDash = /[A-Z]/g; |
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function getData( data ) { |
if ( data === "true" ) { |
return true; |
} |
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if ( data === "false" ) { |
return false; |
} |
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if ( data === "null" ) { |
return null; |
} |
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// Only convert to a number if it doesn't change the string |
if ( data === +data + "" ) { |
return +data; |
} |
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if ( rbrace.test( data ) ) { |
return JSON.parse( data ); |
} |
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return data; |
} |
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function dataAttr( elem, key, data ) { |
var name; |
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// If nothing was found internally, try to fetch any |
// data from the HTML5 data-* attribute |
if ( data === undefined && elem.nodeType === 1 ) { |
name = "data-" + key.replace( rmultiDash, "-$&" ).toLowerCase(); |
data = elem.getAttribute( name ); |
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if ( typeof data === "string" ) { |
try { |
data = getData( data ); |
} catch ( e ) {} |
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// Make sure we set the data so it isn't changed later |
dataUser.set( elem, key, data ); |
} else { |
data = undefined; |
} |
} |
return data; |
} |
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jQuery.extend( { |
hasData: function( elem ) { |
return dataUser.hasData( elem ) || dataPriv.hasData( elem ); |
}, |
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data: function( elem, name, data ) { |
return dataUser.access( elem, name, data ); |
}, |
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removeData: function( elem, name ) { |
dataUser.remove( elem, name ); |
}, |
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// TODO: Now that all calls to _data and _removeData have been replaced |
// with direct calls to dataPriv methods, these can be deprecated. |
_data: function( elem, name, data ) { |
return dataPriv.access( elem, name, data ); |
}, |
|
_removeData: function( elem, name ) { |
dataPriv.remove( elem, name ); |
} |
} ); |
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jQuery.fn.extend( { |
data: function( key, value ) { |
var i, name, data, |
elem = this[ 0 ], |
attrs = elem && elem.attributes; |
|
// Gets all values |
if ( key === undefined ) { |
if ( this.length ) { |
data = dataUser.get( elem ); |
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if ( elem.nodeType === 1 && !dataPriv.get( elem, "hasDataAttrs" ) ) { |
i = attrs.length; |
while ( i-- ) { |
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// Support: IE 11 only |
// The attrs elements can be null (#14894) |
if ( attrs[ i ] ) { |
name = attrs[ i ].name; |
if ( name.indexOf( "data-" ) === 0 ) { |
name = camelCase( name.slice( 5 ) ); |
dataAttr( elem, name, data[ name ] ); |
} |
} |
} |
dataPriv.set( elem, "hasDataAttrs", true ); |
} |
} |
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return data; |
} |
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// Sets multiple values |
if ( typeof key === "object" ) { |
return this.each( function() { |
dataUser.set( this, key ); |
} ); |
} |
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return access( this, function( value ) { |
var data; |
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// The calling jQuery object (element matches) is not empty |
// (and therefore has an element appears at this[ 0 ]) and the |
// `value` parameter was not undefined. An empty jQuery object |
// will result in `undefined` for elem = this[ 0 ] which will |
// throw an exception if an attempt to read a data cache is made. |
if ( elem && value === undefined ) { |
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// Attempt to get data from the cache |
// The key will always be camelCased in Data |
data = dataUser.get( elem, key ); |
if ( data !== undefined ) { |
return data; |
} |
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// Attempt to "discover" the data in |
// HTML5 custom data-* attrs |
data = dataAttr( elem, key ); |
if ( data !== undefined ) { |
return data; |
} |
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// We tried really hard, but the data doesn't exist. |
return; |
} |
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// Set the data... |
this.each( function() { |
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// We always store the camelCased key |
dataUser.set( this, key, value ); |
} ); |
}, null, value, arguments.length > 1, null, true ); |
}, |
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removeData: function( key ) { |
return this.each( function() { |
dataUser.remove( this, key ); |
} ); |
} |
} ); |
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return jQuery; |
} ); |