Merge remote branch 'RedWolves/master'
[jquery.git] / src / attributes.js
1 (function( jQuery ) {
2
3 var rclass = /[\n\t]/g,
4         rspace = /\s+/,
5         rreturn = /\r/g,
6         rspecialurl = /href|src|style/,
7         rtype = /(button|input)/i,
8         rfocusable = /(button|input|object|select|textarea)/i,
9         rclickable = /^(a|area)$/i,
10         rradiocheck = /radio|checkbox/;
11
12 jQuery.fn.extend({
13         attr: function( name, value ) {
14                 return jQuery.access( this, name, value, true, jQuery.attr );
15         },
16
17         removeAttr: function( name, fn ) {
18                 return this.each(function(){
19                         jQuery.attr( this, name, "" );
20                         if ( this.nodeType === 1 ) {
21                                 this.removeAttribute( name );
22                         }
23                 });
24         },
25
26         addClass: function( value ) {
27                 if ( jQuery.isFunction(value) ) {
28                         return this.each(function(i) {
29                                 var self = jQuery(this);
30                                 self.addClass( value.call(this, i, self.attr("class")) );
31                         });
32                 }
33
34                 if ( value && typeof value === "string" ) {
35                         var classNames = (value || "").split( rspace );
36
37                         for ( var i = 0, l = this.length; i < l; i++ ) {
38                                 var elem = this[i];
39
40                                 if ( elem.nodeType === 1 ) {
41                                         if ( !elem.className ) {
42                                                 elem.className = value;
43
44                                         } else {
45                                                 var className = " " + elem.className + " ", setClass = elem.className;
46                                                 for ( var c = 0, cl = classNames.length; c < cl; c++ ) {
47                                                         if ( className.indexOf( " " + classNames[c] + " " ) < 0 ) {
48                                                                 setClass += " " + classNames[c];
49                                                         }
50                                                 }
51                                                 elem.className = jQuery.trim( setClass );
52                                         }
53                                 }
54                         }
55                 }
56
57                 return this;
58         },
59
60         removeClass: function( value ) {
61                 if ( jQuery.isFunction(value) ) {
62                         return this.each(function(i) {
63                                 var self = jQuery(this);
64                                 self.removeClass( value.call(this, i, self.attr("class")) );
65                         });
66                 }
67
68                 if ( (value && typeof value === "string") || value === undefined ) {
69                         var classNames = (value || "").split(rspace);
70
71                         for ( var i = 0, l = this.length; i < l; i++ ) {
72                                 var elem = this[i];
73
74                                 if ( elem.nodeType === 1 && elem.className ) {
75                                         if ( value ) {
76                                                 var className = (" " + elem.className + " ").replace(rclass, " ");
77                                                 for ( var c = 0, cl = classNames.length; c < cl; c++ ) {
78                                                         className = className.replace(" " + classNames[c] + " ", " ");
79                                                 }
80                                                 elem.className = jQuery.trim( className );
81
82                                         } else {
83                                                 elem.className = "";
84                                         }
85                                 }
86                         }
87                 }
88
89                 return this;
90         },
91
92         toggleClass: function( value, stateVal ) {
93                 var type = typeof value, isBool = typeof stateVal === "boolean";
94
95                 if ( jQuery.isFunction( value ) ) {
96                         return this.each(function(i) {
97                                 var self = jQuery(this);
98                                 self.toggleClass( value.call(this, i, self.attr("class"), stateVal), stateVal );
99                         });
100                 }
101
102                 return this.each(function() {
103                         if ( type === "string" ) {
104                                 // toggle individual class names
105                                 var className, i = 0, self = jQuery(this),
106                                         state = stateVal,
107                                         classNames = value.split( rspace );
108
109                                 while ( (className = classNames[ i++ ]) ) {
110                                         // check each className given, space seperated list
111                                         state = isBool ? state : !self.hasClass( className );
112                                         self[ state ? "addClass" : "removeClass" ]( className );
113                                 }
114
115                         } else if ( type === "undefined" || type === "boolean" ) {
116                                 if ( this.className ) {
117                                         // store className if set
118                                         jQuery.data( this, "__className__", this.className );
119                                 }
120
121                                 // toggle whole className
122                                 this.className = this.className || value === false ? "" : jQuery.data( this, "__className__" ) || "";
123                         }
124                 });
125         },
126
127         hasClass: function( selector ) {
128                 var className = " " + selector + " ";
129                 for ( var i = 0, l = this.length; i < l; i++ ) {
130                         if ( (" " + this[i].className + " ").replace(rclass, " ").indexOf( className ) > -1 ) {
131                                 return true;
132                         }
133                 }
134
135                 return false;
136         },
137
138         val: function( value ) {
139                 if ( value === undefined ) {
140                         var elem = this[0];
141
142                         if ( elem ) {
143                                 if ( jQuery.nodeName( elem, "option" ) ) {
144                                         // attributes.value is undefined in Blackberry 4.7 but
145                                         // uses .value. See #6932
146                                         var val = elem.attributes.value;
147                                         return !val || val.specified ? elem.value : elem.text;
148                                 }
149
150                                 // We need to handle select boxes special
151                                 if ( jQuery.nodeName( elem, "select" ) ) {
152                                         var index = elem.selectedIndex,
153                                                 values = [],
154                                                 options = elem.options,
155                                                 one = elem.type === "select-one";
156
157                                         // Nothing was selected
158                                         if ( index < 0 ) {
159                                                 return null;
160                                         }
161
162                                         // Loop through all the selected options
163                                         for ( var i = one ? index : 0, max = one ? index + 1 : options.length; i < max; i++ ) {
164                                                 var option = options[ i ];
165
166                                                 if ( option.selected ) {
167                                                         // Get the specifc value for the option
168                                                         value = jQuery(option).val();
169
170                                                         // We don't need an array for one selects
171                                                         if ( one ) {
172                                                                 return value;
173                                                         }
174
175                                                         // Multi-Selects return an array
176                                                         values.push( value );
177                                                 }
178                                         }
179
180                                         return values;
181                                 }
182
183                                 // Handle the case where in Webkit "" is returned instead of "on" if a value isn't specified
184                                 if ( rradiocheck.test( elem.type ) && !jQuery.support.checkOn ) {
185                                         return elem.getAttribute("value") === null ? "on" : elem.value;
186                                 }
187                                 
188
189                                 // Everything else, we just grab the value
190                                 return (elem.value || "").replace(rreturn, "");
191
192                         }
193
194                         return undefined;
195                 }
196
197                 var isFunction = jQuery.isFunction(value);
198
199                 return this.each(function(i) {
200                         var self = jQuery(this), val = value;
201
202                         if ( this.nodeType !== 1 ) {
203                                 return;
204                         }
205
206                         if ( isFunction ) {
207                                 val = value.call(this, i, self.val());
208                         }
209
210                         // Typecast each time if the value is a Function and the appended
211                         // value is therefore different each time.
212                         if ( typeof val === "number" ) {
213                                 val += "";
214                         }
215
216                         if ( jQuery.isArray(val) && rradiocheck.test( this.type ) ) {
217                                 this.checked = jQuery.inArray( self.val(), val ) >= 0;
218
219                         } else if ( jQuery.nodeName( this, "select" ) ) {
220                                 var values = jQuery.makeArray(val);
221
222                                 jQuery( "option", this ).each(function() {
223                                         this.selected = jQuery.inArray( jQuery(this).val(), values ) >= 0;
224                                 });
225
226                                 if ( !values.length ) {
227                                         this.selectedIndex = -1;
228                                 }
229
230                         } else {
231                                 this.value = val;
232                         }
233                 });
234         }
235 });
236
237 jQuery.extend({
238         attrFn: {
239                 val: true,
240                 css: true,
241                 html: true,
242                 text: true,
243                 data: true,
244                 width: true,
245                 height: true,
246                 offset: true
247         },
248                 
249         attr: function( elem, name, value, pass ) {
250                 // don't set attributes on text and comment nodes
251                 if ( !elem || elem.nodeType === 3 || elem.nodeType === 8 ) {
252                         return undefined;
253                 }
254
255                 if ( pass && name in jQuery.attrFn ) {
256                         return jQuery(elem)[name](value);
257                 }
258
259                 var notxml = elem.nodeType !== 1 || !jQuery.isXMLDoc( elem ),
260                         // Whether we are setting (or getting)
261                         set = value !== undefined;
262
263                 // Try to normalize/fix the name
264                 name = notxml && jQuery.props[ name ] || name;
265
266                 // Only do all the following if this is a node (faster for style)
267                 if ( elem.nodeType === 1 ) {
268                         // These attributes require special treatment
269                         var special = rspecialurl.test( name );
270
271                         // Safari mis-reports the default selected property of an option
272                         // Accessing the parent's selectedIndex property fixes it
273                         if ( name === "selected" && !jQuery.support.optSelected ) {
274                                 var parent = elem.parentNode;
275                                 if ( parent ) {
276                                         parent.selectedIndex;
277         
278                                         // Make sure that it also works with optgroups, see #5701
279                                         if ( parent.parentNode ) {
280                                                 parent.parentNode.selectedIndex;
281                                         }
282                                 }
283                         }
284
285                         // If applicable, access the attribute via the DOM 0 way
286                         // 'in' checks fail in Blackberry 4.7 #6931
287                         if ( (name in elem || elem[ name ] !== undefined) && notxml && !special ) {
288                                 if ( set ) {
289                                         // We can't allow the type property to be changed (since it causes problems in IE)
290                                         if ( name === "type" && rtype.test( elem.nodeName ) && elem.parentNode ) {
291                                                 jQuery.error( "type property can't be changed" );
292                                         }
293
294                                         elem[ name ] = value;
295                                 }
296
297                                 // browsers index elements by id/name on forms, give priority to attributes.
298                                 if ( jQuery.nodeName( elem, "form" ) && elem.getAttributeNode(name) ) {
299                                         return elem.getAttributeNode( name ).nodeValue;
300                                 }
301
302                                 // elem.tabIndex doesn't always return the correct value when it hasn't been explicitly set
303                                 // http://fluidproject.org/blog/2008/01/09/getting-setting-and-removing-tabindex-values-with-javascript/
304                                 if ( name === "tabIndex" ) {
305                                         var attributeNode = elem.getAttributeNode( "tabIndex" );
306
307                                         return attributeNode && attributeNode.specified ?
308                                                 attributeNode.value :
309                                                 rfocusable.test( elem.nodeName ) || rclickable.test( elem.nodeName ) && elem.href ?
310                                                         0 :
311                                                         undefined;
312                                 }
313
314                                 return elem[ name ];
315                         }
316
317                         if ( !jQuery.support.style && notxml && name === "style" ) {
318                                 if ( set ) {
319                                         elem.style.cssText = "" + value;
320                                 }
321
322                                 return elem.style.cssText;
323                         }
324
325                         if ( set ) {
326                                 // convert the value to a string (all browsers do this but IE) see #1070
327                                 elem.setAttribute( name, "" + value );
328                         }
329
330                         // Ensure that missing attributes return undefined
331                         // Blackberry 4.7 returns "" from getAttribute #6938
332                         if ( !elem.attributes[ name ] && !elem.hasAttribute( name ) ) {
333                                 return undefined;
334                         }
335
336                         var attr = !jQuery.support.hrefNormalized && notxml && special ?
337                                         // Some attributes require a special call on IE
338                                         elem.getAttribute( name, 2 ) :
339                                         elem.getAttribute( name );
340
341                         // Non-existent attributes return null, we normalize to undefined
342                         return attr === null ? undefined : attr;
343                 }
344         }
345 });
346
347 })( jQuery );