1 /* Prototype JavaScript framework, version 1.6.0.3
2 * (c) 2005-2008 Sam Stephenson
4 * Prototype is freely distributable under the terms of an MIT-style license.
5 * For details, see the Prototype web site: http://www.prototypejs.org/
7 *--------------------------------------------------------------------------*/
13 IE: !!(window.attachEvent &&
14 navigator.userAgent.indexOf('Opera') === -1),
15 Opera: navigator.userAgent.indexOf('Opera') > -1,
16 WebKit: navigator.userAgent.indexOf('AppleWebKit/') > -1,
17 Gecko: navigator.userAgent.indexOf('Gecko') > -1 &&
18 navigator.userAgent.indexOf('KHTML') === -1,
19 MobileSafari: !!navigator.userAgent.match(/Apple.*Mobile.*Safari/)
23 XPath: !!document.evaluate,
24 SelectorsAPI: !!document.querySelector,
25 ElementExtensions: !!window.HTMLElement,
26 SpecificElementExtensions:
27 document.createElement('div')['__proto__'] &&
28 document.createElement('div')['__proto__'] !==
29 document.createElement('form')['__proto__']
32 ScriptFragment: '<script[^>]*>([\\S\\s]*?)<\/script>',
33 JSONFilter: /^\/\*-secure-([\s\S]*)\*\/\s*$/,
35 emptyFunction: function() { },
36 K: function(x) { return x }
39 if (Prototype.Browser.MobileSafari)
40 Prototype.BrowserFeatures.SpecificElementExtensions = false;
43 /* Based on Alex Arnell's inheritance implementation. */
46 var parent = null, properties = $A(arguments);
47 if (Object.isFunction(properties[0]))
48 parent = properties.shift();
51 this.initialize.apply(this, arguments);
54 Object.extend(klass, Class.Methods);
55 klass.superclass = parent;
56 klass.subclasses = [];
59 var subclass = function() { };
60 subclass.prototype = parent.prototype;
61 klass.prototype = new subclass;
62 parent.subclasses.push(klass);
65 for (var i = 0; i < properties.length; i++)
66 klass.addMethods(properties[i]);
68 if (!klass.prototype.initialize)
69 klass.prototype.initialize = Prototype.emptyFunction;
71 klass.prototype.constructor = klass;
78 addMethods: function(source) {
79 var ancestor = this.superclass && this.superclass.prototype;
80 var properties = Object.keys(source);
82 if (!Object.keys({ toString: true }).length)
83 properties.push("toString", "valueOf");
85 for (var i = 0, length = properties.length; i < length; i++) {
86 var property = properties[i], value = source[property];
87 if (ancestor && Object.isFunction(value) &&
88 value.argumentNames().first() == "$super") {
90 value = (function(m) {
91 return function() { return ancestor[m].apply(this, arguments) };
92 })(property).wrap(method);
94 value.valueOf = method.valueOf.bind(method);
95 value.toString = method.toString.bind(method);
97 this.prototype[property] = value;
106 Object.extend = function(destination, source) {
107 for (var property in source)
108 destination[property] = source[property];
112 Object.extend(Object, {
113 inspect: function(object) {
115 if (Object.isUndefined(object)) return 'undefined';
116 if (object === null) return 'null';
117 return object.inspect ? object.inspect() : String(object);
119 if (e instanceof RangeError) return '...';
124 toJSON: function(object) {
125 var type = typeof object;
129 case 'unknown': return;
130 case 'boolean': return object.toString();
133 if (object === null) return 'null';
134 if (object.toJSON) return object.toJSON();
135 if (Object.isElement(object)) return;
138 for (var property in object) {
139 var value = Object.toJSON(object[property]);
140 if (!Object.isUndefined(value))
141 results.push(property.toJSON() + ': ' + value);
144 return '{' + results.join(', ') + '}';
147 toQueryString: function(object) {
148 return $H(object).toQueryString();
151 toHTML: function(object) {
152 return object && object.toHTML ? object.toHTML() : String.interpret(object);
155 keys: function(object) {
157 for (var property in object)
162 values: function(object) {
164 for (var property in object)
165 values.push(object[property]);
169 clone: function(object) {
170 return Object.extend({ }, object);
173 isElement: function(object) {
174 return !!(object && object.nodeType == 1);
177 isArray: function(object) {
178 return object != null && typeof object == "object" &&
179 'splice' in object && 'join' in object;
182 isHash: function(object) {
183 return object instanceof Hash;
186 isFunction: function(object) {
187 return typeof object == "function";
190 isString: function(object) {
191 return typeof object == "string";
194 isNumber: function(object) {
195 return typeof object == "number";
198 isUndefined: function(object) {
199 return typeof object == "undefined";
203 Object.extend(Function.prototype, {
204 argumentNames: function() {
205 var names = this.toString().match(/^[\s\(]*function[^(]*\(([^\)]*)\)/)[1]
206 .replace(/\s+/g, '').split(',');
207 return names.length == 1 && !names[0] ? [] : names;
211 if (arguments.length < 2 && Object.isUndefined(arguments[0])) return this;
212 var __method = this, args = $A(arguments), object = args.shift();
214 return __method.apply(object, args.concat($A(arguments)));
218 bindAsEventListener: function() {
219 var __method = this, args = $A(arguments), object = args.shift();
220 return function(event) {
221 return __method.apply(object, [event || window.event].concat(args));
226 if (!arguments.length) return this;
227 var __method = this, args = $A(arguments);
229 return __method.apply(this, args.concat($A(arguments)));
234 var __method = this, args = $A(arguments), timeout = args.shift() * 1000;
235 return window.setTimeout(function() {
236 return __method.apply(__method, args);
241 var args = [0.01].concat($A(arguments));
242 return this.delay.apply(this, args);
245 wrap: function(wrapper) {
248 return wrapper.apply(this, [__method.bind(this)].concat($A(arguments)));
252 methodize: function() {
253 if (this._methodized) return this._methodized;
255 return this._methodized = function() {
256 return __method.apply(null, [this].concat($A(arguments)));
261 Date.prototype.toJSON = function() {
262 return '"' + this.getUTCFullYear() + '-' +
263 (this.getUTCMonth() + 1).toPaddedString(2) + '-' +
264 this.getUTCDate().toPaddedString(2) + 'T' +
265 this.getUTCHours().toPaddedString(2) + ':' +
266 this.getUTCMinutes().toPaddedString(2) + ':' +
267 this.getUTCSeconds().toPaddedString(2) + 'Z"';
274 for (var i = 0, length = arguments.length; i < length; i++) {
275 var lambda = arguments[i];
277 returnValue = lambda();
286 RegExp.prototype.match = RegExp.prototype.test;
288 RegExp.escape = function(str) {
289 return String(str).replace(/([.*+?^=!:${}()|[\]\/\\])/g, '\\$1');
292 /*--------------------------------------------------------------------------*/
294 var PeriodicalExecuter = Class.create({
295 initialize: function(callback, frequency) {
296 this.callback = callback;
297 this.frequency = frequency;
298 this.currentlyExecuting = false;
300 this.registerCallback();
303 registerCallback: function() {
304 this.timer = setInterval(this.onTimerEvent.bind(this), this.frequency * 1000);
307 execute: function() {
312 if (!this.timer) return;
313 clearInterval(this.timer);
317 onTimerEvent: function() {
318 if (!this.currentlyExecuting) {
320 this.currentlyExecuting = true;
323 this.currentlyExecuting = false;
328 Object.extend(String, {
329 interpret: function(value) {
330 return value == null ? '' : String(value);
342 Object.extend(String.prototype, {
343 gsub: function(pattern, replacement) {
344 var result = '', source = this, match;
345 replacement = arguments.callee.prepareReplacement(replacement);
347 while (source.length > 0) {
348 if (match = source.match(pattern)) {
349 result += source.slice(0, match.index);
350 result += String.interpret(replacement(match));
351 source = source.slice(match.index + match[0].length);
353 result += source, source = '';
359 sub: function(pattern, replacement, count) {
360 replacement = this.gsub.prepareReplacement(replacement);
361 count = Object.isUndefined(count) ? 1 : count;
363 return this.gsub(pattern, function(match) {
364 if (--count < 0) return match[0];
365 return replacement(match);
369 scan: function(pattern, iterator) {
370 this.gsub(pattern, iterator);
374 truncate: function(length, truncation) {
375 length = length || 30;
376 truncation = Object.isUndefined(truncation) ? '...' : truncation;
377 return this.length > length ?
378 this.slice(0, length - truncation.length) + truncation : String(this);
382 return this.replace(/^\s+/, '').replace(/\s+$/, '');
385 stripTags: function() {
386 return this.replace(/<\/?[^>]+>/gi, '');
389 stripScripts: function() {
390 return this.replace(new RegExp(Prototype.ScriptFragment, 'img'), '');
393 extractScripts: function() {
394 var matchAll = new RegExp(Prototype.ScriptFragment, 'img');
395 var matchOne = new RegExp(Prototype.ScriptFragment, 'im');
396 return (this.match(matchAll) || []).map(function(scriptTag) {
397 return (scriptTag.match(matchOne) || ['', ''])[1];
401 evalScripts: function() {
402 return this.extractScripts().map(function(script) { return eval(script) });
405 escapeHTML: function() {
406 var self = arguments.callee;
407 self.text.data = this;
408 return self.div.innerHTML;
411 unescapeHTML: function() {
412 var div = new Element('div');
413 div.innerHTML = this.stripTags();
414 return div.childNodes[0] ? (div.childNodes.length > 1 ?
415 $A(div.childNodes).inject('', function(memo, node) { return memo+node.nodeValue }) :
416 div.childNodes[0].nodeValue) : '';
419 toQueryParams: function(separator) {
420 var match = this.strip().match(/([^?#]*)(#.*)?$/);
421 if (!match) return { };
423 return match[1].split(separator || '&').inject({ }, function(hash, pair) {
424 if ((pair = pair.split('='))[0]) {
425 var key = decodeURIComponent(pair.shift());
426 var value = pair.length > 1 ? pair.join('=') : pair[0];
427 if (value != undefined) value = decodeURIComponent(value);
430 if (!Object.isArray(hash[key])) hash[key] = [hash[key]];
431 hash[key].push(value);
433 else hash[key] = value;
439 toArray: function() {
440 return this.split('');
444 return this.slice(0, this.length - 1) +
445 String.fromCharCode(this.charCodeAt(this.length - 1) + 1);
448 times: function(count) {
449 return count < 1 ? '' : new Array(count + 1).join(this);
452 camelize: function() {
453 var parts = this.split('-'), len = parts.length;
454 if (len == 1) return parts[0];
456 var camelized = this.charAt(0) == '-'
457 ? parts[0].charAt(0).toUpperCase() + parts[0].substring(1)
460 for (var i = 1; i < len; i++)
461 camelized += parts[i].charAt(0).toUpperCase() + parts[i].substring(1);
466 capitalize: function() {
467 return this.charAt(0).toUpperCase() + this.substring(1).toLowerCase();
470 underscore: function() {
471 return this.gsub(/::/, '/').gsub(/([A-Z]+)([A-Z][a-z])/,'#{1}_#{2}').gsub(/([a-z\d])([A-Z])/,'#{1}_#{2}').gsub(/-/,'_').toLowerCase();
474 dasherize: function() {
475 return this.gsub(/_/,'-');
478 inspect: function(useDoubleQuotes) {
479 var escapedString = this.gsub(/[\x00-\x1f\\]/, function(match) {
480 var character = String.specialChar[match[0]];
481 return character ? character : '\\u00' + match[0].charCodeAt().toPaddedString(2, 16);
483 if (useDoubleQuotes) return '"' + escapedString.replace(/"/g, '\\"') + '"';
484 return "'" + escapedString.replace(/'/g, '\\\'') + "'";
488 return this.inspect(true);
491 unfilterJSON: function(filter) {
492 return this.sub(filter || Prototype.JSONFilter, '#{1}');
497 if (str.blank()) return false;
498 str = this.replace(/\\./g, '@').replace(/"[^"\\\n\r]*"/g, '');
499 return (/^[,:{}\[\]0-9.\-+Eaeflnr-u \n\r\t]*$/).test(str);
502 evalJSON: function(sanitize) {
503 var json = this.unfilterJSON();
505 if (!sanitize || json.isJSON()) return eval('(' + json + ')');
507 throw new SyntaxError('Badly formed JSON string: ' + this.inspect());
510 include: function(pattern) {
511 return this.indexOf(pattern) > -1;
514 startsWith: function(pattern) {
515 return this.indexOf(pattern) === 0;
518 endsWith: function(pattern) {
519 var d = this.length - pattern.length;
520 return d >= 0 && this.lastIndexOf(pattern) === d;
528 return /^\s*$/.test(this);
531 interpolate: function(object, pattern) {
532 return new Template(this, pattern).evaluate(object);
536 if (Prototype.Browser.WebKit || Prototype.Browser.IE) Object.extend(String.prototype, {
537 escapeHTML: function() {
538 return this.replace(/&/g,'&').replace(/</g,'<').replace(/>/g,'>');
540 unescapeHTML: function() {
541 return this.stripTags().replace(/&/g,'&').replace(/</g,'<').replace(/>/g,'>');
545 String.prototype.gsub.prepareReplacement = function(replacement) {
546 if (Object.isFunction(replacement)) return replacement;
547 var template = new Template(replacement);
548 return function(match) { return template.evaluate(match) };
551 String.prototype.parseQuery = String.prototype.toQueryParams;
553 Object.extend(String.prototype.escapeHTML, {
554 div: document.createElement('div'),
555 text: document.createTextNode('')
558 String.prototype.escapeHTML.div.appendChild(String.prototype.escapeHTML.text);
560 var Template = Class.create({
561 initialize: function(template, pattern) {
562 this.template = template.toString();
563 this.pattern = pattern || Template.Pattern;
566 evaluate: function(object) {
567 if (Object.isFunction(object.toTemplateReplacements))
568 object = object.toTemplateReplacements();
570 return this.template.gsub(this.pattern, function(match) {
571 if (object == null) return '';
573 var before = match[1] || '';
574 if (before == '\\') return match[2];
576 var ctx = object, expr = match[3];
577 var pattern = /^([^.[]+|\[((?:.*?[^\\])?)\])(\.|\[|$)/;
578 match = pattern.exec(expr);
579 if (match == null) return before;
581 while (match != null) {
582 var comp = match[1].startsWith('[') ? match[2].gsub('\\\\]', ']') : match[1];
584 if (null == ctx || '' == match[3]) break;
585 expr = expr.substring('[' == match[3] ? match[1].length : match[0].length);
586 match = pattern.exec(expr);
589 return before + String.interpret(ctx);
593 Template.Pattern = /(^|.|\r|\n)(#\{(.*?)\})/;
598 each: function(iterator, context) {
601 this._each(function(value) {
602 iterator.call(context, value, index++);
605 if (e != $break) throw e;
610 eachSlice: function(number, iterator, context) {
611 var index = -number, slices = [], array = this.toArray();
612 if (number < 1) return array;
613 while ((index += number) < array.length)
614 slices.push(array.slice(index, index+number));
615 return slices.collect(iterator, context);
618 all: function(iterator, context) {
619 iterator = iterator || Prototype.K;
621 this.each(function(value, index) {
622 result = result && !!iterator.call(context, value, index);
623 if (!result) throw $break;
628 any: function(iterator, context) {
629 iterator = iterator || Prototype.K;
631 this.each(function(value, index) {
632 if (result = !!iterator.call(context, value, index))
638 collect: function(iterator, context) {
639 iterator = iterator || Prototype.K;
641 this.each(function(value, index) {
642 results.push(iterator.call(context, value, index));
647 detect: function(iterator, context) {
649 this.each(function(value, index) {
650 if (iterator.call(context, value, index)) {
658 findAll: function(iterator, context) {
660 this.each(function(value, index) {
661 if (iterator.call(context, value, index))
667 grep: function(filter, iterator, context) {
668 iterator = iterator || Prototype.K;
671 if (Object.isString(filter))
672 filter = new RegExp(filter);
674 this.each(function(value, index) {
675 if (filter.match(value))
676 results.push(iterator.call(context, value, index));
681 include: function(object) {
682 if (Object.isFunction(this.indexOf))
683 if (this.indexOf(object) != -1) return true;
686 this.each(function(value) {
687 if (value == object) {
695 inGroupsOf: function(number, fillWith) {
696 fillWith = Object.isUndefined(fillWith) ? null : fillWith;
697 return this.eachSlice(number, function(slice) {
698 while(slice.length < number) slice.push(fillWith);
703 inject: function(memo, iterator, context) {
704 this.each(function(value, index) {
705 memo = iterator.call(context, memo, value, index);
710 invoke: function(method) {
711 var args = $A(arguments).slice(1);
712 return this.map(function(value) {
713 return value[method].apply(value, args);
717 max: function(iterator, context) {
718 iterator = iterator || Prototype.K;
720 this.each(function(value, index) {
721 value = iterator.call(context, value, index);
722 if (result == null || value >= result)
728 min: function(iterator, context) {
729 iterator = iterator || Prototype.K;
731 this.each(function(value, index) {
732 value = iterator.call(context, value, index);
733 if (result == null || value < result)
739 partition: function(iterator, context) {
740 iterator = iterator || Prototype.K;
741 var trues = [], falses = [];
742 this.each(function(value, index) {
743 (iterator.call(context, value, index) ?
744 trues : falses).push(value);
746 return [trues, falses];
749 pluck: function(property) {
751 this.each(function(value) {
752 results.push(value[property]);
757 reject: function(iterator, context) {
759 this.each(function(value, index) {
760 if (!iterator.call(context, value, index))
766 sortBy: function(iterator, context) {
767 return this.map(function(value, index) {
770 criteria: iterator.call(context, value, index)
772 }).sort(function(left, right) {
773 var a = left.criteria, b = right.criteria;
774 return a < b ? -1 : a > b ? 1 : 0;
778 toArray: function() {
783 var iterator = Prototype.K, args = $A(arguments);
784 if (Object.isFunction(args.last()))
785 iterator = args.pop();
787 var collections = [this].concat(args).map($A);
788 return this.map(function(value, index) {
789 return iterator(collections.pluck(index));
794 return this.toArray().length;
797 inspect: function() {
798 return '#<Enumerable:' + this.toArray().inspect() + '>';
802 Object.extend(Enumerable, {
803 map: Enumerable.collect,
804 find: Enumerable.detect,
805 select: Enumerable.findAll,
806 filter: Enumerable.findAll,
807 member: Enumerable.include,
808 entries: Enumerable.toArray,
809 every: Enumerable.all,
812 function $A(iterable) {
813 if (!iterable) return [];
814 if (iterable.toArray) return iterable.toArray();
815 var length = iterable.length || 0, results = new Array(length);
816 while (length--) results[length] = iterable[length];
820 if (Prototype.Browser.WebKit) {
821 $A = function(iterable) {
822 if (!iterable) return [];
823 // In Safari, only use the `toArray` method if it's not a NodeList.
824 // A NodeList is a function, has an function `item` property, and a numeric
825 // `length` property. Adapted from Google Doctype.
826 if (!(typeof iterable === 'function' && typeof iterable.length ===
827 'number' && typeof iterable.item === 'function') && iterable.toArray)
828 return iterable.toArray();
829 var length = iterable.length || 0, results = new Array(length);
830 while (length--) results[length] = iterable[length];
837 Object.extend(Array.prototype, Enumerable);
839 if (!Array.prototype._reverse) Array.prototype._reverse = Array.prototype.reverse;
841 Object.extend(Array.prototype, {
842 _each: function(iterator) {
843 for (var i = 0, length = this.length; i < length; i++)
857 return this[this.length - 1];
860 compact: function() {
861 return this.select(function(value) {
862 return value != null;
866 flatten: function() {
867 return this.inject([], function(array, value) {
868 return array.concat(Object.isArray(value) ?
869 value.flatten() : [value]);
873 without: function() {
874 var values = $A(arguments);
875 return this.select(function(value) {
876 return !values.include(value);
880 reverse: function(inline) {
881 return (inline !== false ? this : this.toArray())._reverse();
885 return this.length > 1 ? this : this[0];
888 uniq: function(sorted) {
889 return this.inject([], function(array, value, index) {
890 if (0 == index || (sorted ? array.last() != value : !array.include(value)))
896 intersect: function(array) {
897 return this.uniq().findAll(function(item) {
898 return array.detect(function(value) { return item === value });
903 return [].concat(this);
910 inspect: function() {
911 return '[' + this.map(Object.inspect).join(', ') + ']';
916 this.each(function(object) {
917 var value = Object.toJSON(object);
918 if (!Object.isUndefined(value)) results.push(value);
920 return '[' + results.join(', ') + ']';
924 // use native browser JS 1.6 implementation if available
925 if (Object.isFunction(Array.prototype.forEach))
926 Array.prototype._each = Array.prototype.forEach;
928 if (!Array.prototype.indexOf) Array.prototype.indexOf = function(item, i) {
930 var length = this.length;
931 if (i < 0) i = length + i;
932 for (; i < length; i++)
933 if (this[i] === item) return i;
937 if (!Array.prototype.lastIndexOf) Array.prototype.lastIndexOf = function(item, i) {
938 i = isNaN(i) ? this.length : (i < 0 ? this.length + i : i) + 1;
939 var n = this.slice(0, i).reverse().indexOf(item);
940 return (n < 0) ? n : i - n - 1;
943 Array.prototype.toArray = Array.prototype.clone;
945 function $w(string) {
946 if (!Object.isString(string)) return [];
947 string = string.strip();
948 return string ? string.split(/\s+/) : [];
951 if (Prototype.Browser.Opera){
952 Array.prototype.concat = function() {
954 for (var i = 0, length = this.length; i < length; i++) array.push(this[i]);
955 for (var i = 0, length = arguments.length; i < length; i++) {
956 if (Object.isArray(arguments[i])) {
957 for (var j = 0, arrayLength = arguments[i].length; j < arrayLength; j++)
958 array.push(arguments[i][j]);
960 array.push(arguments[i]);
966 Object.extend(Number.prototype, {
967 toColorPart: function() {
968 return this.toPaddedString(2, 16);
975 times: function(iterator, context) {
976 $R(0, this, true).each(iterator, context);
980 toPaddedString: function(length, radix) {
981 var string = this.toString(radix || 10);
982 return '0'.times(length - string.length) + string;
986 return isFinite(this) ? this.toString() : 'null';
990 $w('abs round ceil floor').each(function(method){
991 Number.prototype[method] = Math[method].methodize();
993 function $H(object) {
994 return new Hash(object);
997 var Hash = Class.create(Enumerable, (function() {
999 function toQueryPair(key, value) {
1000 if (Object.isUndefined(value)) return key;
1001 return key + '=' + encodeURIComponent(String.interpret(value));
1005 initialize: function(object) {
1006 this._object = Object.isHash(object) ? object.toObject() : Object.clone(object);
1009 _each: function(iterator) {
1010 for (var key in this._object) {
1011 var value = this._object[key], pair = [key, value];
1018 set: function(key, value) {
1019 return this._object[key] = value;
1022 get: function(key) {
1023 // simulating poorly supported hasOwnProperty
1024 if (this._object[key] !== Object.prototype[key])
1025 return this._object[key];
1028 unset: function(key) {
1029 var value = this._object[key];
1030 delete this._object[key];
1034 toObject: function() {
1035 return Object.clone(this._object);
1039 return this.pluck('key');
1042 values: function() {
1043 return this.pluck('value');
1046 index: function(value) {
1047 var match = this.detect(function(pair) {
1048 return pair.value === value;
1050 return match && match.key;
1053 merge: function(object) {
1054 return this.clone().update(object);
1057 update: function(object) {
1058 return new Hash(object).inject(this, function(result, pair) {
1059 result.set(pair.key, pair.value);
1064 toQueryString: function() {
1065 return this.inject([], function(results, pair) {
1066 var key = encodeURIComponent(pair.key), values = pair.value;
1068 if (values && typeof values == 'object') {
1069 if (Object.isArray(values))
1070 return results.concat(values.map(toQueryPair.curry(key)));
1071 } else results.push(toQueryPair(key, values));
1076 inspect: function() {
1077 return '#<Hash:{' + this.map(function(pair) {
1078 return pair.map(Object.inspect).join(': ');
1079 }).join(', ') + '}>';
1082 toJSON: function() {
1083 return Object.toJSON(this.toObject());
1087 return new Hash(this);
1092 Hash.prototype.toTemplateReplacements = Hash.prototype.toObject;
1094 var ObjectRange = Class.create(Enumerable, {
1095 initialize: function(start, end, exclusive) {
1098 this.exclusive = exclusive;
1101 _each: function(iterator) {
1102 var value = this.start;
1103 while (this.include(value)) {
1105 value = value.succ();
1109 include: function(value) {
1110 if (value < this.start)
1113 return value < this.end;
1114 return value <= this.end;
1118 var $R = function(start, end, exclusive) {
1119 return new ObjectRange(start, end, exclusive);
1123 getTransport: function() {
1125 function() {return new XMLHttpRequest()},
1126 function() {return new ActiveXObject('Msxml2.XMLHTTP')},
1127 function() {return new ActiveXObject('Microsoft.XMLHTTP')}
1131 activeRequestCount: 0
1137 _each: function(iterator) {
1138 this.responders._each(iterator);
1141 register: function(responder) {
1142 if (!this.include(responder))
1143 this.responders.push(responder);
1146 unregister: function(responder) {
1147 this.responders = this.responders.without(responder);
1150 dispatch: function(callback, request, transport, json) {
1151 this.each(function(responder) {
1152 if (Object.isFunction(responder[callback])) {
1154 responder[callback].apply(responder, [request, transport, json]);
1161 Object.extend(Ajax.Responders, Enumerable);
1163 Ajax.Responders.register({
1164 onCreate: function() { Ajax.activeRequestCount++ },
1165 onComplete: function() { Ajax.activeRequestCount-- }
1168 Ajax.Base = Class.create({
1169 initialize: function(options) {
1173 contentType: 'application/x-www-form-urlencoded',
1179 Object.extend(this.options, options || { });
1181 this.options.method = this.options.method.toLowerCase();
1183 if (Object.isString(this.options.parameters))
1184 this.options.parameters = this.options.parameters.toQueryParams();
1185 else if (Object.isHash(this.options.parameters))
1186 this.options.parameters = this.options.parameters.toObject();
1190 Ajax.Request = Class.create(Ajax.Base, {
1193 initialize: function($super, url, options) {
1195 this.transport = Ajax.getTransport();
1199 request: function(url) {
1201 this.method = this.options.method;
1202 var params = Object.clone(this.options.parameters);
1204 if (!['get', 'post'].include(this.method)) {
1205 // simulate other verbs over post
1206 params['_method'] = this.method;
1207 this.method = 'post';
1210 this.parameters = params;
1212 if (params = Object.toQueryString(params)) {
1213 // when GET, append parameters to URL
1214 if (this.method == 'get')
1215 this.url += (this.url.include('?') ? '&' : '?') + params;
1216 else if (/Konqueror|Safari|KHTML/.test(navigator.userAgent))
1221 var response = new Ajax.Response(this);
1222 if (this.options.onCreate) this.options.onCreate(response);
1223 Ajax.Responders.dispatch('onCreate', this, response);
1225 this.transport.open(this.method.toUpperCase(), this.url,
1226 this.options.asynchronous);
1228 if (this.options.asynchronous) this.respondToReadyState.bind(this).defer(1);
1230 this.transport.onreadystatechange = this.onStateChange.bind(this);
1231 this.setRequestHeaders();
1233 this.body = this.method == 'post' ? (this.options.postBody || params) : null;
1234 this.transport.send(this.body);
1236 /* Force Firefox to handle ready state 4 for synchronous requests */
1237 if (!this.options.asynchronous && this.transport.overrideMimeType)
1238 this.onStateChange();
1242 this.dispatchException(e);
1246 onStateChange: function() {
1247 var readyState = this.transport.readyState;
1248 if (readyState > 1 && !((readyState == 4) && this._complete))
1249 this.respondToReadyState(this.transport.readyState);
1252 setRequestHeaders: function() {
1254 'X-Requested-With': 'XMLHttpRequest',
1255 'X-Prototype-Version': Prototype.Version,
1256 'Accept': 'text/javascript, text/html, application/xml, text/xml, */*'
1259 if (this.method == 'post') {
1260 headers['Content-type'] = this.options.contentType +
1261 (this.options.encoding ? '; charset=' + this.options.encoding : '');
1263 /* Force "Connection: close" for older Mozilla browsers to work
1264 * around a bug where XMLHttpRequest sends an incorrect
1265 * Content-length header. See Mozilla Bugzilla #246651.
1267 if (this.transport.overrideMimeType &&
1268 (navigator.userAgent.match(/Gecko\/(\d{4})/) || [0,2005])[1] < 2005)
1269 headers['Connection'] = 'close';
1272 // user-defined headers
1273 if (typeof this.options.requestHeaders == 'object') {
1274 var extras = this.options.requestHeaders;
1276 if (Object.isFunction(extras.push))
1277 for (var i = 0, length = extras.length; i < length; i += 2)
1278 headers[extras[i]] = extras[i+1];
1280 $H(extras).each(function(pair) { headers[pair.key] = pair.value });
1283 for (var name in headers)
1284 this.transport.setRequestHeader(name, headers[name]);
1287 success: function() {
1288 var status = this.getStatus();
1289 return !status || (status >= 200 && status < 300);
1292 getStatus: function() {
1294 return this.transport.status || 0;
1295 } catch (e) { return 0 }
1298 respondToReadyState: function(readyState) {
1299 var state = Ajax.Request.Events[readyState], response = new Ajax.Response(this);
1301 if (state == 'Complete') {
1303 this._complete = true;
1304 (this.options['on' + response.status]
1305 || this.options['on' + (this.success() ? 'Success' : 'Failure')]
1306 || Prototype.emptyFunction)(response, response.headerJSON);
1308 this.dispatchException(e);
1311 var contentType = response.getHeader('Content-type');
1312 if (this.options.evalJS == 'force'
1313 || (this.options.evalJS && this.isSameOrigin() && contentType
1314 && contentType.match(/^\s*(text|application)\/(x-)?(java|ecma)script(;.*)?\s*$/i)))
1315 this.evalResponse();
1319 (this.options['on' + state] || Prototype.emptyFunction)(response, response.headerJSON);
1320 Ajax.Responders.dispatch('on' + state, this, response, response.headerJSON);
1322 this.dispatchException(e);
1325 if (state == 'Complete') {
1326 // avoid memory leak in MSIE: clean up
1327 this.transport.onreadystatechange = Prototype.emptyFunction;
1331 isSameOrigin: function() {
1332 var m = this.url.match(/^\s*https?:\/\/[^\/]*/);
1333 return !m || (m[0] == '#{protocol}//#{domain}#{port}'.interpolate({
1334 protocol: location.protocol,
1335 domain: document.domain,
1336 port: location.port ? ':' + location.port : ''
1340 getHeader: function(name) {
1342 return this.transport.getResponseHeader(name) || null;
1343 } catch (e) { return null }
1346 evalResponse: function() {
1348 return eval((this.transport.responseText || '').unfilterJSON());
1350 this.dispatchException(e);
1354 dispatchException: function(exception) {
1355 (this.options.onException || Prototype.emptyFunction)(this, exception);
1356 Ajax.Responders.dispatch('onException', this, exception);
1360 Ajax.Request.Events =
1361 ['Uninitialized', 'Loading', 'Loaded', 'Interactive', 'Complete'];
1363 Ajax.Response = Class.create({
1364 initialize: function(request){
1365 this.request = request;
1366 var transport = this.transport = request.transport,
1367 readyState = this.readyState = transport.readyState;
1369 if((readyState > 2 && !Prototype.Browser.IE) || readyState == 4) {
1370 this.status = this.getStatus();
1371 this.statusText = this.getStatusText();
1372 this.responseText = String.interpret(transport.responseText);
1373 this.headerJSON = this._getHeaderJSON();
1376 if(readyState == 4) {
1377 var xml = transport.responseXML;
1378 this.responseXML = Object.isUndefined(xml) ? null : xml;
1379 this.responseJSON = this._getResponseJSON();
1386 getStatus: Ajax.Request.prototype.getStatus,
1388 getStatusText: function() {
1390 return this.transport.statusText || '';
1391 } catch (e) { return '' }
1394 getHeader: Ajax.Request.prototype.getHeader,
1396 getAllHeaders: function() {
1398 return this.getAllResponseHeaders();
1399 } catch (e) { return null }
1402 getResponseHeader: function(name) {
1403 return this.transport.getResponseHeader(name);
1406 getAllResponseHeaders: function() {
1407 return this.transport.getAllResponseHeaders();
1410 _getHeaderJSON: function() {
1411 var json = this.getHeader('X-JSON');
1412 if (!json) return null;
1413 json = decodeURIComponent(escape(json));
1415 return json.evalJSON(this.request.options.sanitizeJSON ||
1416 !this.request.isSameOrigin());
1418 this.request.dispatchException(e);
1422 _getResponseJSON: function() {
1423 var options = this.request.options;
1424 if (!options.evalJSON || (options.evalJSON != 'force' &&
1425 !(this.getHeader('Content-type') || '').include('application/json')) ||
1426 this.responseText.blank())
1429 return this.responseText.evalJSON(options.sanitizeJSON ||
1430 !this.request.isSameOrigin());
1432 this.request.dispatchException(e);
1437 Ajax.Updater = Class.create(Ajax.Request, {
1438 initialize: function($super, container, url, options) {
1440 success: (container.success || container),
1441 failure: (container.failure || (container.success ? null : container))
1444 options = Object.clone(options);
1445 var onComplete = options.onComplete;
1446 options.onComplete = (function(response, json) {
1447 this.updateContent(response.responseText);
1448 if (Object.isFunction(onComplete)) onComplete(response, json);
1451 $super(url, options);
1454 updateContent: function(responseText) {
1455 var receiver = this.container[this.success() ? 'success' : 'failure'],
1456 options = this.options;
1458 if (!options.evalScripts) responseText = responseText.stripScripts();
1460 if (receiver = $(receiver)) {
1461 if (options.insertion) {
1462 if (Object.isString(options.insertion)) {
1463 var insertion = { }; insertion[options.insertion] = responseText;
1464 receiver.insert(insertion);
1466 else options.insertion(receiver, responseText);
1468 else receiver.update(responseText);
1473 Ajax.PeriodicalUpdater = Class.create(Ajax.Base, {
1474 initialize: function($super, container, url, options) {
1476 this.onComplete = this.options.onComplete;
1478 this.frequency = (this.options.frequency || 2);
1479 this.decay = (this.options.decay || 1);
1482 this.container = container;
1489 this.options.onComplete = this.updateComplete.bind(this);
1490 this.onTimerEvent();
1494 this.updater.options.onComplete = undefined;
1495 clearTimeout(this.timer);
1496 (this.onComplete || Prototype.emptyFunction).apply(this, arguments);
1499 updateComplete: function(response) {
1500 if (this.options.decay) {
1501 this.decay = (response.responseText == this.lastText ?
1502 this.decay * this.options.decay : 1);
1504 this.lastText = response.responseText;
1506 this.timer = this.onTimerEvent.bind(this).delay(this.decay * this.frequency);
1509 onTimerEvent: function() {
1510 this.updater = new Ajax.Updater(this.container, this.url, this.options);
1513 function $(element) {
1514 if (arguments.length > 1) {
1515 for (var i = 0, elements = [], length = arguments.length; i < length; i++)
1516 elements.push($(arguments[i]));
1519 if (Object.isString(element))
1520 element = document.getElementById(element);
1521 return Element.extend(element);
1524 if (Prototype.BrowserFeatures.XPath) {
1525 document._getElementsByXPath = function(expression, parentElement) {
1527 var query = document.evaluate(expression, $(parentElement) || document,
1528 null, XPathResult.ORDERED_NODE_SNAPSHOT_TYPE, null);
1529 for (var i = 0, length = query.snapshotLength; i < length; i++)
1530 results.push(Element.extend(query.snapshotItem(i)));
1535 /*--------------------------------------------------------------------------*/
1537 if (!window.Node) var Node = { };
1539 if (!Node.ELEMENT_NODE) {
1540 // DOM level 2 ECMAScript Language Binding
1541 Object.extend(Node, {
1545 CDATA_SECTION_NODE: 4,
1546 ENTITY_REFERENCE_NODE: 5,
1548 PROCESSING_INSTRUCTION_NODE: 7,
1551 DOCUMENT_TYPE_NODE: 10,
1552 DOCUMENT_FRAGMENT_NODE: 11,
1558 var element = this.Element;
1559 this.Element = function(tagName, attributes) {
1560 attributes = attributes || { };
1561 tagName = tagName.toLowerCase();
1562 var cache = Element.cache;
1563 if (Prototype.Browser.IE && attributes.name) {
1564 tagName = '<' + tagName + ' name="' + attributes.name + '">';
1565 delete attributes.name;
1566 return Element.writeAttribute(document.createElement(tagName), attributes);
1568 if (!cache[tagName]) cache[tagName] = Element.extend(document.createElement(tagName));
1569 return Element.writeAttribute(cache[tagName].cloneNode(false), attributes);
1571 Object.extend(this.Element, element || { });
1572 if (element) this.Element.prototype = element.prototype;
1575 Element.cache = { };
1578 visible: function(element) {
1579 return $(element).style.display != 'none';
1582 toggle: function(element) {
1583 element = $(element);
1584 Element[Element.visible(element) ? 'hide' : 'show'](element);
1588 hide: function(element) {
1589 element = $(element);
1590 element.style.display = 'none';
1594 show: function(element) {
1595 element = $(element);
1596 element.style.display = '';
1600 remove: function(element) {
1601 element = $(element);
1602 element.parentNode.removeChild(element);
1606 update: function(element, content) {
1607 element = $(element);
1608 if (content && content.toElement) content = content.toElement();
1609 if (Object.isElement(content)) return element.update().insert(content);
1610 content = Object.toHTML(content);
1611 element.innerHTML = content.stripScripts();
1612 content.evalScripts.bind(content).defer();
1616 replace: function(element, content) {
1617 element = $(element);
1618 if (content && content.toElement) content = content.toElement();
1619 else if (!Object.isElement(content)) {
1620 content = Object.toHTML(content);
1621 var range = element.ownerDocument.createRange();
1622 range.selectNode(element);
1623 content.evalScripts.bind(content).defer();
1624 content = range.createContextualFragment(content.stripScripts());
1626 element.parentNode.replaceChild(content, element);
1630 insert: function(element, insertions) {
1631 element = $(element);
1633 if (Object.isString(insertions) || Object.isNumber(insertions) ||
1634 Object.isElement(insertions) || (insertions && (insertions.toElement || insertions.toHTML)))
1635 insertions = {bottom:insertions};
1637 var content, insert, tagName, childNodes;
1639 for (var position in insertions) {
1640 content = insertions[position];
1641 position = position.toLowerCase();
1642 insert = Element._insertionTranslations[position];
1644 if (content && content.toElement) content = content.toElement();
1645 if (Object.isElement(content)) {
1646 insert(element, content);
1650 content = Object.toHTML(content);
1652 tagName = ((position == 'before' || position == 'after')
1653 ? element.parentNode : element).tagName.toUpperCase();
1655 childNodes = Element._getContentFromAnonymousElement(tagName, content.stripScripts());
1657 if (position == 'top' || position == 'after') childNodes.reverse();
1658 childNodes.each(insert.curry(element));
1660 content.evalScripts.bind(content).defer();
1666 wrap: function(element, wrapper, attributes) {
1667 element = $(element);
1668 if (Object.isElement(wrapper))
1669 $(wrapper).writeAttribute(attributes || { });
1670 else if (Object.isString(wrapper)) wrapper = new Element(wrapper, attributes);
1671 else wrapper = new Element('div', wrapper);
1672 if (element.parentNode)
1673 element.parentNode.replaceChild(wrapper, element);
1674 wrapper.appendChild(element);
1678 inspect: function(element) {
1679 element = $(element);
1680 var result = '<' + element.tagName.toLowerCase();
1681 $H({'id': 'id', 'className': 'class'}).each(function(pair) {
1682 var property = pair.first(), attribute = pair.last();
1683 var value = (element[property] || '').toString();
1684 if (value) result += ' ' + attribute + '=' + value.inspect(true);
1686 return result + '>';
1689 recursivelyCollect: function(element, property) {
1690 element = $(element);
1692 while (element = element[property])
1693 if (element.nodeType == 1)
1694 elements.push(Element.extend(element));
1698 ancestors: function(element) {
1699 return $(element).recursivelyCollect('parentNode');
1702 descendants: function(element) {
1703 return $(element).select("*");
1706 firstDescendant: function(element) {
1707 element = $(element).firstChild;
1708 while (element && element.nodeType != 1) element = element.nextSibling;
1712 immediateDescendants: function(element) {
1713 if (!(element = $(element).firstChild)) return [];
1714 while (element && element.nodeType != 1) element = element.nextSibling;
1715 if (element) return [element].concat($(element).nextSiblings());
1719 previousSiblings: function(element) {
1720 return $(element).recursivelyCollect('previousSibling');
1723 nextSiblings: function(element) {
1724 return $(element).recursivelyCollect('nextSibling');
1727 siblings: function(element) {
1728 element = $(element);
1729 return element.previousSiblings().reverse().concat(element.nextSiblings());
1732 match: function(element, selector) {
1733 if (Object.isString(selector))
1734 selector = new Selector(selector);
1735 return selector.match($(element));
1738 up: function(element, expression, index) {
1739 element = $(element);
1740 if (arguments.length == 1) return $(element.parentNode);
1741 var ancestors = element.ancestors();
1742 return Object.isNumber(expression) ? ancestors[expression] :
1743 Selector.findElement(ancestors, expression, index);
1746 down: function(element, expression, index) {
1747 element = $(element);
1748 if (arguments.length == 1) return element.firstDescendant();
1749 return Object.isNumber(expression) ? element.descendants()[expression] :
1750 Element.select(element, expression)[index || 0];
1753 previous: function(element, expression, index) {
1754 element = $(element);
1755 if (arguments.length == 1) return $(Selector.handlers.previousElementSibling(element));
1756 var previousSiblings = element.previousSiblings();
1757 return Object.isNumber(expression) ? previousSiblings[expression] :
1758 Selector.findElement(previousSiblings, expression, index);
1761 next: function(element, expression, index) {
1762 element = $(element);
1763 if (arguments.length == 1) return $(Selector.handlers.nextElementSibling(element));
1764 var nextSiblings = element.nextSiblings();
1765 return Object.isNumber(expression) ? nextSiblings[expression] :
1766 Selector.findElement(nextSiblings, expression, index);
1769 select: function() {
1770 var args = $A(arguments), element = $(args.shift());
1771 return Selector.findChildElements(element, args);
1774 adjacent: function() {
1775 var args = $A(arguments), element = $(args.shift());
1776 return Selector.findChildElements(element.parentNode, args).without(element);
1779 identify: function(element) {
1780 element = $(element);
1781 var id = element.readAttribute('id'), self = arguments.callee;
1783 do { id = 'anonymous_element_' + self.counter++ } while ($(id));
1784 element.writeAttribute('id', id);
1788 readAttribute: function(element, name) {
1789 element = $(element);
1790 if (Prototype.Browser.IE) {
1791 var t = Element._attributeTranslations.read;
1792 if (t.values[name]) return t.values[name](element, name);
1793 if (t.names[name]) name = t.names[name];
1794 if (name.include(':')) {
1795 return (!element.attributes || !element.attributes[name]) ? null :
1796 element.attributes[name].value;
1799 return element.getAttribute(name);
1802 writeAttribute: function(element, name, value) {
1803 element = $(element);
1804 var attributes = { }, t = Element._attributeTranslations.write;
1806 if (typeof name == 'object') attributes = name;
1807 else attributes[name] = Object.isUndefined(value) ? true : value;
1809 for (var attr in attributes) {
1810 name = t.names[attr] || attr;
1811 value = attributes[attr];
1812 if (t.values[attr]) name = t.values[attr](element, value);
1813 if (value === false || value === null)
1814 element.removeAttribute(name);
1815 else if (value === true)
1816 element.setAttribute(name, name);
1817 else element.setAttribute(name, value);
1822 getHeight: function(element) {
1823 return $(element).getDimensions().height;
1826 getWidth: function(element) {
1827 return $(element).getDimensions().width;
1830 classNames: function(element) {
1831 return new Element.ClassNames(element);
1834 hasClassName: function(element, className) {
1835 if (!(element = $(element))) return;
1836 var elementClassName = element.className;
1837 return (elementClassName.length > 0 && (elementClassName == className ||
1838 new RegExp("(^|\\s)" + className + "(\\s|$)").test(elementClassName)));
1841 addClassName: function(element, className) {
1842 if (!(element = $(element))) return;
1843 if (!element.hasClassName(className))
1844 element.className += (element.className ? ' ' : '') + className;
1848 removeClassName: function(element, className) {
1849 if (!(element = $(element))) return;
1850 element.className = element.className.replace(
1851 new RegExp("(^|\\s+)" + className + "(\\s+|$)"), ' ').strip();
1855 toggleClassName: function(element, className) {
1856 if (!(element = $(element))) return;
1857 return element[element.hasClassName(className) ?
1858 'removeClassName' : 'addClassName'](className);
1861 // removes whitespace-only text node children
1862 cleanWhitespace: function(element) {
1863 element = $(element);
1864 var node = element.firstChild;
1866 var nextNode = node.nextSibling;
1867 if (node.nodeType == 3 && !/\S/.test(node.nodeValue))
1868 element.removeChild(node);
1874 empty: function(element) {
1875 return $(element).innerHTML.blank();
1878 descendantOf: function(element, ancestor) {
1879 element = $(element), ancestor = $(ancestor);
1881 if (element.compareDocumentPosition)
1882 return (element.compareDocumentPosition(ancestor) & 8) === 8;
1884 if (ancestor.contains)
1885 return ancestor.contains(element) && ancestor !== element;
1887 while (element = element.parentNode)
1888 if (element == ancestor) return true;
1893 scrollTo: function(element) {
1894 element = $(element);
1895 var pos = element.cumulativeOffset();
1896 window.scrollTo(pos[0], pos[1]);
1900 getStyle: function(element, style) {
1901 element = $(element);
1902 style = style == 'float' ? 'cssFloat' : style.camelize();
1903 var value = element.style[style];
1904 if (!value || value == 'auto') {
1905 var css = document.defaultView.getComputedStyle(element, null);
1906 value = css ? css[style] : null;
1908 if (style == 'opacity') return value ? parseFloat(value) : 1.0;
1909 return value == 'auto' ? null : value;
1912 getOpacity: function(element) {
1913 return $(element).getStyle('opacity');
1916 setStyle: function(element, styles) {
1917 element = $(element);
1918 var elementStyle = element.style, match;
1919 if (Object.isString(styles)) {
1920 element.style.cssText += ';' + styles;
1921 return styles.include('opacity') ?
1922 element.setOpacity(styles.match(/opacity:\s*(\d?\.?\d*)/)[1]) : element;
1924 for (var property in styles)
1925 if (property == 'opacity') element.setOpacity(styles[property]);
1927 elementStyle[(property == 'float' || property == 'cssFloat') ?
1928 (Object.isUndefined(elementStyle.styleFloat) ? 'cssFloat' : 'styleFloat') :
1929 property] = styles[property];
1934 setOpacity: function(element, value) {
1935 element = $(element);
1936 element.style.opacity = (value == 1 || value === '') ? '' :
1937 (value < 0.00001) ? 0 : value;
1941 getDimensions: function(element) {
1942 element = $(element);
1943 var display = element.getStyle('display');
1944 if (display != 'none' && display != null) // Safari bug
1945 return {width: element.offsetWidth, height: element.offsetHeight};
1947 // All *Width and *Height properties give 0 on elements with display none,
1948 // so enable the element temporarily
1949 var els = element.style;
1950 var originalVisibility = els.visibility;
1951 var originalPosition = els.position;
1952 var originalDisplay = els.display;
1953 els.visibility = 'hidden';
1954 els.position = 'absolute';
1955 els.display = 'block';
1956 var originalWidth = element.clientWidth;
1957 var originalHeight = element.clientHeight;
1958 els.display = originalDisplay;
1959 els.position = originalPosition;
1960 els.visibility = originalVisibility;
1961 return {width: originalWidth, height: originalHeight};
1964 makePositioned: function(element) {
1965 element = $(element);
1966 var pos = Element.getStyle(element, 'position');
1967 if (pos == 'static' || !pos) {
1968 element._madePositioned = true;
1969 element.style.position = 'relative';
1970 // Opera returns the offset relative to the positioning context, when an
1971 // element is position relative but top and left have not been defined
1972 if (Prototype.Browser.Opera) {
1973 element.style.top = 0;
1974 element.style.left = 0;
1980 undoPositioned: function(element) {
1981 element = $(element);
1982 if (element._madePositioned) {
1983 element._madePositioned = undefined;
1984 element.style.position =
1986 element.style.left =
1987 element.style.bottom =
1988 element.style.right = '';
1993 makeClipping: function(element) {
1994 element = $(element);
1995 if (element._overflow) return element;
1996 element._overflow = Element.getStyle(element, 'overflow') || 'auto';
1997 if (element._overflow !== 'hidden')
1998 element.style.overflow = 'hidden';
2002 undoClipping: function(element) {
2003 element = $(element);
2004 if (!element._overflow) return element;
2005 element.style.overflow = element._overflow == 'auto' ? '' : element._overflow;
2006 element._overflow = null;
2010 cumulativeOffset: function(element) {
2011 var valueT = 0, valueL = 0;
2013 valueT += element.offsetTop || 0;
2014 valueL += element.offsetLeft || 0;
2015 element = element.offsetParent;
2017 return Element._returnOffset(valueL, valueT);
2020 positionedOffset: function(element) {
2021 var valueT = 0, valueL = 0;
2023 valueT += element.offsetTop || 0;
2024 valueL += element.offsetLeft || 0;
2025 element = element.offsetParent;
2027 if (element.tagName.toUpperCase() == 'BODY') break;
2028 var p = Element.getStyle(element, 'position');
2029 if (p !== 'static') break;
2032 return Element._returnOffset(valueL, valueT);
2035 absolutize: function(element) {
2036 element = $(element);
2037 if (element.getStyle('position') == 'absolute') return element;
2038 // Position.prepare(); // To be done manually by Scripty when it needs it.
2040 var offsets = element.positionedOffset();
2041 var top = offsets[1];
2042 var left = offsets[0];
2043 var width = element.clientWidth;
2044 var height = element.clientHeight;
2046 element._originalLeft = left - parseFloat(element.style.left || 0);
2047 element._originalTop = top - parseFloat(element.style.top || 0);
2048 element._originalWidth = element.style.width;
2049 element._originalHeight = element.style.height;
2051 element.style.position = 'absolute';
2052 element.style.top = top + 'px';
2053 element.style.left = left + 'px';
2054 element.style.width = width + 'px';
2055 element.style.height = height + 'px';
2059 relativize: function(element) {
2060 element = $(element);
2061 if (element.getStyle('position') == 'relative') return element;
2062 // Position.prepare(); // To be done manually by Scripty when it needs it.
2064 element.style.position = 'relative';
2065 var top = parseFloat(element.style.top || 0) - (element._originalTop || 0);
2066 var left = parseFloat(element.style.left || 0) - (element._originalLeft || 0);
2068 element.style.top = top + 'px';
2069 element.style.left = left + 'px';
2070 element.style.height = element._originalHeight;
2071 element.style.width = element._originalWidth;
2075 cumulativeScrollOffset: function(element) {
2076 var valueT = 0, valueL = 0;
2078 valueT += element.scrollTop || 0;
2079 valueL += element.scrollLeft || 0;
2080 element = element.parentNode;
2082 return Element._returnOffset(valueL, valueT);
2085 getOffsetParent: function(element) {
2086 if (element.offsetParent) return $(element.offsetParent);
2087 if (element == document.body) return $(element);
2089 while ((element = element.parentNode) && element != document.body)
2090 if (Element.getStyle(element, 'position') != 'static')
2093 return $(document.body);
2096 viewportOffset: function(forElement) {
2097 var valueT = 0, valueL = 0;
2099 var element = forElement;
2101 valueT += element.offsetTop || 0;
2102 valueL += element.offsetLeft || 0;
2105 if (element.offsetParent == document.body &&
2106 Element.getStyle(element, 'position') == 'absolute') break;
2108 } while (element = element.offsetParent);
2110 element = forElement;
2112 if (!Prototype.Browser.Opera || (element.tagName && (element.tagName.toUpperCase() == 'BODY'))) {
2113 valueT -= element.scrollTop || 0;
2114 valueL -= element.scrollLeft || 0;
2116 } while (element = element.parentNode);
2118 return Element._returnOffset(valueL, valueT);
2121 clonePosition: function(element, source) {
2122 var options = Object.extend({
2129 }, arguments[2] || { });
2131 // find page position of source
2133 var p = source.viewportOffset();
2135 // find coordinate system to use
2136 element = $(element);
2139 // delta [0,0] will do fine with position: fixed elements,
2140 // position:absolute needs offsetParent deltas
2141 if (Element.getStyle(element, 'position') == 'absolute') {
2142 parent = element.getOffsetParent();
2143 delta = parent.viewportOffset();
2146 // correct by body offsets (fixes Safari)
2147 if (parent == document.body) {
2148 delta[0] -= document.body.offsetLeft;
2149 delta[1] -= document.body.offsetTop;
2153 if (options.setLeft) element.style.left = (p[0] - delta[0] + options.offsetLeft) + 'px';
2154 if (options.setTop) element.style.top = (p[1] - delta[1] + options.offsetTop) + 'px';
2155 if (options.setWidth) element.style.width = source.offsetWidth + 'px';
2156 if (options.setHeight) element.style.height = source.offsetHeight + 'px';
2161 Element.Methods.identify.counter = 1;
2163 Object.extend(Element.Methods, {
2164 getElementsBySelector: Element.Methods.select,
2165 childElements: Element.Methods.immediateDescendants
2168 Element._attributeTranslations = {
2178 if (Prototype.Browser.Opera) {
2179 Element.Methods.getStyle = Element.Methods.getStyle.wrap(
2180 function(proceed, element, style) {
2182 case 'left': case 'top': case 'right': case 'bottom':
2183 if (proceed(element, 'position') === 'static') return null;
2184 case 'height': case 'width':
2185 // returns '0px' for hidden elements; we want it to return null
2186 if (!Element.visible(element)) return null;
2188 // returns the border-box dimensions rather than the content-box
2189 // dimensions, so we subtract padding and borders from the value
2190 var dim = parseInt(proceed(element, style), 10);
2192 if (dim !== element['offset' + style.capitalize()])
2196 if (style === 'height') {
2197 properties = ['border-top-width', 'padding-top',
2198 'padding-bottom', 'border-bottom-width'];
2201 properties = ['border-left-width', 'padding-left',
2202 'padding-right', 'border-right-width'];
2204 return properties.inject(dim, function(memo, property) {
2205 var val = proceed(element, property);
2206 return val === null ? memo : memo - parseInt(val, 10);
2208 default: return proceed(element, style);
2213 Element.Methods.readAttribute = Element.Methods.readAttribute.wrap(
2214 function(proceed, element, attribute) {
2215 if (attribute === 'title') return element.title;
2216 return proceed(element, attribute);
2221 else if (Prototype.Browser.IE) {
2222 // IE doesn't report offsets correctly for static elements, so we change them
2223 // to "relative" to get the values, then change them back.
2224 Element.Methods.getOffsetParent = Element.Methods.getOffsetParent.wrap(
2225 function(proceed, element) {
2226 element = $(element);
2227 // IE throws an error if element is not in document
2228 try { element.offsetParent }
2229 catch(e) { return $(document.body) }
2230 var position = element.getStyle('position');
2231 if (position !== 'static') return proceed(element);
2232 element.setStyle({ position: 'relative' });
2233 var value = proceed(element);
2234 element.setStyle({ position: position });
2239 $w('positionedOffset viewportOffset').each(function(method) {
2240 Element.Methods[method] = Element.Methods[method].wrap(
2241 function(proceed, element) {
2242 element = $(element);
2243 try { element.offsetParent }
2244 catch(e) { return Element._returnOffset(0,0) }
2245 var position = element.getStyle('position');
2246 if (position !== 'static') return proceed(element);
2247 // Trigger hasLayout on the offset parent so that IE6 reports
2248 // accurate offsetTop and offsetLeft values for position: fixed.
2249 var offsetParent = element.getOffsetParent();
2250 if (offsetParent && offsetParent.getStyle('position') === 'fixed')
2251 offsetParent.setStyle({ zoom: 1 });
2252 element.setStyle({ position: 'relative' });
2253 var value = proceed(element);
2254 element.setStyle({ position: position });
2260 Element.Methods.cumulativeOffset = Element.Methods.cumulativeOffset.wrap(
2261 function(proceed, element) {
2262 try { element.offsetParent }
2263 catch(e) { return Element._returnOffset(0,0) }
2264 return proceed(element);
2268 Element.Methods.getStyle = function(element, style) {
2269 element = $(element);
2270 style = (style == 'float' || style == 'cssFloat') ? 'styleFloat' : style.camelize();
2271 var value = element.style[style];
2272 if (!value && element.currentStyle) value = element.currentStyle[style];
2274 if (style == 'opacity') {
2275 if (value = (element.getStyle('filter') || '').match(/alpha\(opacity=(.*)\)/))
2276 if (value[1]) return parseFloat(value[1]) / 100;
2280 if (value == 'auto') {
2281 if ((style == 'width' || style == 'height') && (element.getStyle('display') != 'none'))
2282 return element['offset' + style.capitalize()] + 'px';
2288 Element.Methods.setOpacity = function(element, value) {
2289 function stripAlpha(filter){
2290 return filter.replace(/alpha\([^\)]*\)/gi,'');
2292 element = $(element);
2293 var currentStyle = element.currentStyle;
2294 if ((currentStyle && !currentStyle.hasLayout) ||
2295 (!currentStyle && element.style.zoom == 'normal'))
2296 element.style.zoom = 1;
2298 var filter = element.getStyle('filter'), style = element.style;
2299 if (value == 1 || value === '') {
2300 (filter = stripAlpha(filter)) ?
2301 style.filter = filter : style.removeAttribute('filter');
2303 } else if (value < 0.00001) value = 0;
2304 style.filter = stripAlpha(filter) +
2305 'alpha(opacity=' + (value * 100) + ')';
2309 Element._attributeTranslations = {
2312 'class': 'className',
2316 _getAttr: function(element, attribute) {
2317 return element.getAttribute(attribute, 2);
2319 _getAttrNode: function(element, attribute) {
2320 var node = element.getAttributeNode(attribute);
2321 return node ? node.value : "";
2323 _getEv: function(element, attribute) {
2324 attribute = element.getAttribute(attribute);
2325 return attribute ? attribute.toString().slice(23, -2) : null;
2327 _flag: function(element, attribute) {
2328 return $(element).hasAttribute(attribute) ? attribute : null;
2330 style: function(element) {
2331 return element.style.cssText.toLowerCase();
2333 title: function(element) {
2334 return element.title;
2340 Element._attributeTranslations.write = {
2341 names: Object.extend({
2342 cellpadding: 'cellPadding',
2343 cellspacing: 'cellSpacing'
2344 }, Element._attributeTranslations.read.names),
2346 checked: function(element, value) {
2347 element.checked = !!value;
2350 style: function(element, value) {
2351 element.style.cssText = value ? value : '';
2356 Element._attributeTranslations.has = {};
2358 $w('colSpan rowSpan vAlign dateTime accessKey tabIndex ' +
2359 'encType maxLength readOnly longDesc frameBorder').each(function(attr) {
2360 Element._attributeTranslations.write.names[attr.toLowerCase()] = attr;
2361 Element._attributeTranslations.has[attr.toLowerCase()] = attr;
2369 action: v._getAttrNode,
2377 ondblclick: v._getEv,
2378 onmousedown: v._getEv,
2379 onmouseup: v._getEv,
2380 onmouseover: v._getEv,
2381 onmousemove: v._getEv,
2382 onmouseout: v._getEv,
2385 onkeypress: v._getEv,
2386 onkeydown: v._getEv,
2393 })(Element._attributeTranslations.read.values);
2396 else if (Prototype.Browser.Gecko && /rv:1\.8\.0/.test(navigator.userAgent)) {
2397 Element.Methods.setOpacity = function(element, value) {
2398 element = $(element);
2399 element.style.opacity = (value == 1) ? 0.999999 :
2400 (value === '') ? '' : (value < 0.00001) ? 0 : value;
2405 else if (Prototype.Browser.WebKit) {
2406 Element.Methods.setOpacity = function(element, value) {
2407 element = $(element);
2408 element.style.opacity = (value == 1 || value === '') ? '' :
2409 (value < 0.00001) ? 0 : value;
2412 if(element.tagName.toUpperCase() == 'IMG' && element.width) {
2413 element.width++; element.width--;
2415 var n = document.createTextNode(' ');
2416 element.appendChild(n);
2417 element.removeChild(n);
2423 // Safari returns margins on body which is incorrect if the child is absolutely
2424 // positioned. For performance reasons, redefine Element#cumulativeOffset for
2425 // KHTML/WebKit only.
2426 Element.Methods.cumulativeOffset = function(element) {
2427 var valueT = 0, valueL = 0;
2429 valueT += element.offsetTop || 0;
2430 valueL += element.offsetLeft || 0;
2431 if (element.offsetParent == document.body)
2432 if (Element.getStyle(element, 'position') == 'absolute') break;
2434 element = element.offsetParent;
2437 return Element._returnOffset(valueL, valueT);
2441 if (Prototype.Browser.IE || Prototype.Browser.Opera) {
2442 // IE and Opera are missing .innerHTML support for TABLE-related and SELECT elements
2443 Element.Methods.update = function(element, content) {
2444 element = $(element);
2446 if (content && content.toElement) content = content.toElement();
2447 if (Object.isElement(content)) return element.update().insert(content);
2449 content = Object.toHTML(content);
2450 var tagName = element.tagName.toUpperCase();
2452 if (tagName in Element._insertionTranslations.tags) {
2453 $A(element.childNodes).each(function(node) { element.removeChild(node) });
2454 Element._getContentFromAnonymousElement(tagName, content.stripScripts())
2455 .each(function(node) { element.appendChild(node) });
2457 else element.innerHTML = content.stripScripts();
2459 content.evalScripts.bind(content).defer();
2464 if ('outerHTML' in document.createElement('div')) {
2465 Element.Methods.replace = function(element, content) {
2466 element = $(element);
2468 if (content && content.toElement) content = content.toElement();
2469 if (Object.isElement(content)) {
2470 element.parentNode.replaceChild(content, element);
2474 content = Object.toHTML(content);
2475 var parent = element.parentNode, tagName = parent.tagName.toUpperCase();
2477 if (Element._insertionTranslations.tags[tagName]) {
2478 var nextSibling = element.next();
2479 var fragments = Element._getContentFromAnonymousElement(tagName, content.stripScripts());
2480 parent.removeChild(element);
2482 fragments.each(function(node) { parent.insertBefore(node, nextSibling) });
2484 fragments.each(function(node) { parent.appendChild(node) });
2486 else element.outerHTML = content.stripScripts();
2488 content.evalScripts.bind(content).defer();
2493 Element._returnOffset = function(l, t) {
2494 var result = [l, t];
2500 Element._getContentFromAnonymousElement = function(tagName, html) {
2501 var div = new Element('div'), t = Element._insertionTranslations.tags[tagName];
2503 div.innerHTML = t[0] + html + t[1];
2504 t[2].times(function() { div = div.firstChild });
2505 } else div.innerHTML = html;
2506 return $A(div.childNodes);
2509 Element._insertionTranslations = {
2510 before: function(element, node) {
2511 element.parentNode.insertBefore(node, element);
2513 top: function(element, node) {
2514 element.insertBefore(node, element.firstChild);
2516 bottom: function(element, node) {
2517 element.appendChild(node);
2519 after: function(element, node) {
2520 element.parentNode.insertBefore(node, element.nextSibling);
2523 TABLE: ['<table>', '</table>', 1],
2524 TBODY: ['<table><tbody>', '</tbody></table>', 2],
2525 TR: ['<table><tbody><tr>', '</tr></tbody></table>', 3],
2526 TD: ['<table><tbody><tr><td>', '</td></tr></tbody></table>', 4],
2527 SELECT: ['<select>', '</select>', 1]
2532 Object.extend(this.tags, {
2533 THEAD: this.tags.TBODY,
2534 TFOOT: this.tags.TBODY,
2537 }).call(Element._insertionTranslations);
2539 Element.Methods.Simulated = {
2540 hasAttribute: function(element, attribute) {
2541 attribute = Element._attributeTranslations.has[attribute] || attribute;
2542 var node = $(element).getAttributeNode(attribute);
2543 return !!(node && node.specified);
2547 Element.Methods.ByTag = { };
2549 Object.extend(Element, Element.Methods);
2551 if (!Prototype.BrowserFeatures.ElementExtensions &&
2552 document.createElement('div')['__proto__']) {
2553 window.HTMLElement = { };
2554 window.HTMLElement.prototype = document.createElement('div')['__proto__'];
2555 Prototype.BrowserFeatures.ElementExtensions = true;
2558 Element.extend = (function() {
2559 if (Prototype.BrowserFeatures.SpecificElementExtensions)
2562 var Methods = { }, ByTag = Element.Methods.ByTag;
2564 var extend = Object.extend(function(element) {
2565 if (!element || element._extendedByPrototype ||
2566 element.nodeType != 1 || element == window) return element;
2568 var methods = Object.clone(Methods),
2569 tagName = element.tagName.toUpperCase(), property, value;
2571 // extend methods for specific tags
2572 if (ByTag[tagName]) Object.extend(methods, ByTag[tagName]);
2574 for (property in methods) {
2575 value = methods[property];
2576 if (Object.isFunction(value) && !(property in element))
2577 element[property] = value.methodize();
2580 element._extendedByPrototype = Prototype.emptyFunction;
2584 refresh: function() {
2585 // extend methods for all tags (Safari doesn't need this)
2586 if (!Prototype.BrowserFeatures.ElementExtensions) {
2587 Object.extend(Methods, Element.Methods);
2588 Object.extend(Methods, Element.Methods.Simulated);
2597 Element.hasAttribute = function(element, attribute) {
2598 if (element.hasAttribute) return element.hasAttribute(attribute);
2599 return Element.Methods.Simulated.hasAttribute(element, attribute);
2602 Element.addMethods = function(methods) {
2603 var F = Prototype.BrowserFeatures, T = Element.Methods.ByTag;
2606 Object.extend(Form, Form.Methods);
2607 Object.extend(Form.Element, Form.Element.Methods);
2608 Object.extend(Element.Methods.ByTag, {
2609 "FORM": Object.clone(Form.Methods),
2610 "INPUT": Object.clone(Form.Element.Methods),
2611 "SELECT": Object.clone(Form.Element.Methods),
2612 "TEXTAREA": Object.clone(Form.Element.Methods)
2616 if (arguments.length == 2) {
2617 var tagName = methods;
2618 methods = arguments[1];
2621 if (!tagName) Object.extend(Element.Methods, methods || { });
2623 if (Object.isArray(tagName)) tagName.each(extend);
2624 else extend(tagName);
2627 function extend(tagName) {
2628 tagName = tagName.toUpperCase();
2629 if (!Element.Methods.ByTag[tagName])
2630 Element.Methods.ByTag[tagName] = { };
2631 Object.extend(Element.Methods.ByTag[tagName], methods);
2634 function copy(methods, destination, onlyIfAbsent) {
2635 onlyIfAbsent = onlyIfAbsent || false;
2636 for (var property in methods) {
2637 var value = methods[property];
2638 if (!Object.isFunction(value)) continue;
2639 if (!onlyIfAbsent || !(property in destination))
2640 destination[property] = value.methodize();
2644 function findDOMClass(tagName) {
2647 "OPTGROUP": "OptGroup", "TEXTAREA": "TextArea", "P": "Paragraph",
2648 "FIELDSET": "FieldSet", "UL": "UList", "OL": "OList", "DL": "DList",
2649 "DIR": "Directory", "H1": "Heading", "H2": "Heading", "H3": "Heading",
2650 "H4": "Heading", "H5": "Heading", "H6": "Heading", "Q": "Quote",
2651 "INS": "Mod", "DEL": "Mod", "A": "Anchor", "IMG": "Image", "CAPTION":
2652 "TableCaption", "COL": "TableCol", "COLGROUP": "TableCol", "THEAD":
2653 "TableSection", "TFOOT": "TableSection", "TBODY": "TableSection", "TR":
2654 "TableRow", "TH": "TableCell", "TD": "TableCell", "FRAMESET":
2655 "FrameSet", "IFRAME": "IFrame"
2657 if (trans[tagName]) klass = 'HTML' + trans[tagName] + 'Element';
2658 if (window[klass]) return window[klass];
2659 klass = 'HTML' + tagName + 'Element';
2660 if (window[klass]) return window[klass];
2661 klass = 'HTML' + tagName.capitalize() + 'Element';
2662 if (window[klass]) return window[klass];
2664 window[klass] = { };
2665 window[klass].prototype = document.createElement(tagName)['__proto__'];
2666 return window[klass];
2669 if (F.ElementExtensions) {
2670 copy(Element.Methods, HTMLElement.prototype);
2671 copy(Element.Methods.Simulated, HTMLElement.prototype, true);
2674 if (F.SpecificElementExtensions) {
2675 for (var tag in Element.Methods.ByTag) {
2676 var klass = findDOMClass(tag);
2677 if (Object.isUndefined(klass)) continue;
2678 copy(T[tag], klass.prototype);
2682 Object.extend(Element, Element.Methods);
2683 delete Element.ByTag;
2685 if (Element.extend.refresh) Element.extend.refresh();
2686 Element.cache = { };
2689 document.viewport = {
2690 getDimensions: function() {
2691 var dimensions = { }, B = Prototype.Browser;
2692 $w('width height').each(function(d) {
2693 var D = d.capitalize();
2694 if (B.WebKit && !document.evaluate) {
2695 // Safari <3.0 needs self.innerWidth/Height
2696 dimensions[d] = self['inner' + D];
2697 } else if (B.Opera && parseFloat(window.opera.version()) < 9.5) {
2698 // Opera <9.5 needs document.body.clientWidth/Height
2699 dimensions[d] = document.body['client' + D]
2701 dimensions[d] = document.documentElement['client' + D];
2707 getWidth: function() {
2708 return this.getDimensions().width;
2711 getHeight: function() {
2712 return this.getDimensions().height;
2715 getScrollOffsets: function() {
2716 return Element._returnOffset(
2717 window.pageXOffset || document.documentElement.scrollLeft || document.body.scrollLeft,
2718 window.pageYOffset || document.documentElement.scrollTop || document.body.scrollTop);
2721 /* Portions of the Selector class are derived from Jack Slocum's DomQuery,
2722 * part of YUI-Ext version 0.40, distributed under the terms of an MIT-style
2723 * license. Please see http://www.yui-ext.com/ for more information. */
2725 var Selector = Class.create({
2726 initialize: function(expression) {
2727 this.expression = expression.strip();
2729 if (this.shouldUseSelectorsAPI()) {
2730 this.mode = 'selectorsAPI';
2731 } else if (this.shouldUseXPath()) {
2732 this.mode = 'xpath';
2733 this.compileXPathMatcher();
2735 this.mode = "normal";
2736 this.compileMatcher();
2741 shouldUseXPath: function() {
2742 if (!Prototype.BrowserFeatures.XPath) return false;
2744 var e = this.expression;
2746 // Safari 3 chokes on :*-of-type and :empty
2747 if (Prototype.Browser.WebKit &&
2748 (e.include("-of-type") || e.include(":empty")))
2751 // XPath can't do namespaced attributes, nor can it read
2752 // the "checked" property from DOM nodes
2753 if ((/(\[[\w-]*?:|:checked)/).test(e))
2759 shouldUseSelectorsAPI: function() {
2760 if (!Prototype.BrowserFeatures.SelectorsAPI) return false;
2762 if (!Selector._div) Selector._div = new Element('div');
2764 // Make sure the browser treats the selector as valid. Test on an
2765 // isolated element to minimize cost of this check.
2767 Selector._div.querySelector(this.expression);
2775 compileMatcher: function() {
2776 var e = this.expression, ps = Selector.patterns, h = Selector.handlers,
2777 c = Selector.criteria, le, p, m;
2779 if (Selector._cache[e]) {
2780 this.matcher = Selector._cache[e];
2784 this.matcher = ["this.matcher = function(root) {",
2785 "var r = root, h = Selector.handlers, c = false, n;"];
2787 while (e && le != e && (/\S/).test(e)) {
2791 if (m = e.match(p)) {
2792 this.matcher.push(Object.isFunction(c[i]) ? c[i](m) :
2793 new Template(c[i]).evaluate(m));
2794 e = e.replace(m[0], '');
2800 this.matcher.push("return h.unique(n);\n}");
2801 eval(this.matcher.join('\n'));
2802 Selector._cache[this.expression] = this.matcher;
2805 compileXPathMatcher: function() {
2806 var e = this.expression, ps = Selector.patterns,
2807 x = Selector.xpath, le, m;
2809 if (Selector._cache[e]) {
2810 this.xpath = Selector._cache[e]; return;
2813 this.matcher = ['.//*'];
2814 while (e && le != e && (/\S/).test(e)) {
2817 if (m = e.match(ps[i])) {
2818 this.matcher.push(Object.isFunction(x[i]) ? x[i](m) :
2819 new Template(x[i]).evaluate(m));
2820 e = e.replace(m[0], '');
2826 this.xpath = this.matcher.join('');
2827 Selector._cache[this.expression] = this.xpath;
2830 findElements: function(root) {
2831 root = root || document;
2832 var e = this.expression, results;
2834 switch (this.mode) {
2835 case 'selectorsAPI':
2836 // querySelectorAll queries document-wide, then filters to descendants
2837 // of the context element. That's not what we want.
2838 // Add an explicit context to the selector if necessary.
2839 if (root !== document) {
2840 var oldId = root.id, id = $(root).identify();
2841 e = "#" + id + " " + e;
2844 results = $A(root.querySelectorAll(e)).map(Element.extend);
2849 return document._getElementsByXPath(this.xpath, root);
2851 return this.matcher(root);
2855 match: function(element) {
2858 var e = this.expression, ps = Selector.patterns, as = Selector.assertions;
2861 while (e && le !== e && (/\S/).test(e)) {
2865 if (m = e.match(p)) {
2866 // use the Selector.assertions methods unless the selector
2869 this.tokens.push([i, Object.clone(m)]);
2870 e = e.replace(m[0], '');
2872 // reluctantly do a document-wide search
2873 // and look for a match in the array
2874 return this.findElements(document).include(element);
2880 var match = true, name, matches;
2881 for (var i = 0, token; token = this.tokens[i]; i++) {
2882 name = token[0], matches = token[1];
2883 if (!Selector.assertions[name](element, matches)) {
2884 match = false; break;
2891 toString: function() {
2892 return this.expression;
2895 inspect: function() {
2896 return "#<Selector:" + this.expression.inspect() + ">";
2900 Object.extend(Selector, {
2906 adjacent: "/following-sibling::*[1]",
2907 laterSibling: '/following-sibling::*',
2908 tagName: function(m) {
2909 if (m[1] == '*') return '';
2910 return "[local-name()='" + m[1].toLowerCase() +
2911 "' or local-name()='" + m[1].toUpperCase() + "']";
2913 className: "[contains(concat(' ', @class, ' '), ' #{1} ')]",
2915 attrPresence: function(m) {
2916 m[1] = m[1].toLowerCase();
2917 return new Template("[@#{1}]").evaluate(m);
2920 m[1] = m[1].toLowerCase();
2921 m[3] = m[5] || m[6];
2922 return new Template(Selector.xpath.operators[m[2]]).evaluate(m);
2924 pseudo: function(m) {
2925 var h = Selector.xpath.pseudos[m[1]];
2927 if (Object.isFunction(h)) return h(m);
2928 return new Template(Selector.xpath.pseudos[m[1]]).evaluate(m);
2931 '=': "[@#{1}='#{3}']",
2932 '!=': "[@#{1}!='#{3}']",
2933 '^=': "[starts-with(@#{1}, '#{3}')]",
2934 '$=': "[substring(@#{1}, (string-length(@#{1}) - string-length('#{3}') + 1))='#{3}']",
2935 '*=': "[contains(@#{1}, '#{3}')]",
2936 '~=': "[contains(concat(' ', @#{1}, ' '), ' #{3} ')]",
2937 '|=': "[contains(concat('-', @#{1}, '-'), '-#{3}-')]"
2940 'first-child': '[not(preceding-sibling::*)]',
2941 'last-child': '[not(following-sibling::*)]',
2942 'only-child': '[not(preceding-sibling::* or following-sibling::*)]',
2943 'empty': "[count(*) = 0 and (count(text()) = 0)]",
2944 'checked': "[@checked]",
2945 'disabled': "[(@disabled) and (@type!='hidden')]",
2946 'enabled': "[not(@disabled) and (@type!='hidden')]",
2947 'not': function(m) {
2948 var e = m[6], p = Selector.patterns,
2949 x = Selector.xpath, le, v;
2952 while (e && le != e && (/\S/).test(e)) {
2955 if (m = e.match(p[i])) {
2956 v = Object.isFunction(x[i]) ? x[i](m) : new Template(x[i]).evaluate(m);
2957 exclusion.push("(" + v.substring(1, v.length - 1) + ")");
2958 e = e.replace(m[0], '');
2963 return "[not(" + exclusion.join(" and ") + ")]";
2965 'nth-child': function(m) {
2966 return Selector.xpath.pseudos.nth("(count(./preceding-sibling::*) + 1) ", m);
2968 'nth-last-child': function(m) {
2969 return Selector.xpath.pseudos.nth("(count(./following-sibling::*) + 1) ", m);
2971 'nth-of-type': function(m) {
2972 return Selector.xpath.pseudos.nth("position() ", m);
2974 'nth-last-of-type': function(m) {
2975 return Selector.xpath.pseudos.nth("(last() + 1 - position()) ", m);
2977 'first-of-type': function(m) {
2978 m[6] = "1"; return Selector.xpath.pseudos['nth-of-type'](m);
2980 'last-of-type': function(m) {
2981 m[6] = "1"; return Selector.xpath.pseudos['nth-last-of-type'](m);
2983 'only-of-type': function(m) {
2984 var p = Selector.xpath.pseudos; return p['first-of-type'](m) + p['last-of-type'](m);
2986 nth: function(fragment, m) {
2987 var mm, formula = m[6], predicate;
2988 if (formula == 'even') formula = '2n+0';
2989 if (formula == 'odd') formula = '2n+1';
2990 if (mm = formula.match(/^(\d+)$/)) // digit only
2991 return '[' + fragment + "= " + mm[1] + ']';
2992 if (mm = formula.match(/^(-?\d*)?n(([+-])(\d+))?/)) { // an+b
2993 if (mm[1] == "-") mm[1] = -1;
2994 var a = mm[1] ? Number(mm[1]) : 1;
2995 var b = mm[2] ? Number(mm[2]) : 0;
2996 predicate = "[((#{fragment} - #{b}) mod #{a} = 0) and " +
2997 "((#{fragment} - #{b}) div #{a} >= 0)]";
2998 return new Template(predicate).evaluate({
2999 fragment: fragment, a: a, b: b });
3006 tagName: 'n = h.tagName(n, r, "#{1}", c); c = false;',
3007 className: 'n = h.className(n, r, "#{1}", c); c = false;',
3008 id: 'n = h.id(n, r, "#{1}", c); c = false;',
3009 attrPresence: 'n = h.attrPresence(n, r, "#{1}", c); c = false;',
3011 m[3] = (m[5] || m[6]);
3012 return new Template('n = h.attr(n, r, "#{1}", "#{3}", "#{2}", c); c = false;').evaluate(m);
3014 pseudo: function(m) {
3015 if (m[6]) m[6] = m[6].replace(/"/g, '\\"');
3016 return new Template('n = h.pseudo(n, "#{1}", "#{6}", r, c); c = false;').evaluate(m);
3018 descendant: 'c = "descendant";',
3019 child: 'c = "child";',
3020 adjacent: 'c = "adjacent";',
3021 laterSibling: 'c = "laterSibling";'
3025 // combinators must be listed first
3026 // (and descendant needs to be last combinator)
3027 laterSibling: /^\s*~\s*/,
3029 adjacent: /^\s*\+\s*/,
3033 tagName: /^\s*(\*|[\w\-]+)(\b|$)?/,
3034 id: /^#([\w\-\*]+)(\b|$)/,
3035 className: /^\.([\w\-\*]+)(\b|$)/,
3037 /^:((first|last|nth|nth-last|only)(-child|-of-type)|empty|checked|(en|dis)abled|not)(\((.*?)\))?(\b|$|(?=\s|[:+~>]))/,
3038 attrPresence: /^\[((?:[\w]+:)?[\w]+)\]/,
3039 attr: /\[((?:[\w-]*:)?[\w-]+)\s*(?:([!^$*~|]?=)\s*((['"])([^\4]*?)\4|([^'"][^\]]*?)))?\]/
3042 // for Selector.match and Element#match
3044 tagName: function(element, matches) {
3045 return matches[1].toUpperCase() == element.tagName.toUpperCase();
3048 className: function(element, matches) {
3049 return Element.hasClassName(element, matches[1]);
3052 id: function(element, matches) {
3053 return element.id === matches[1];
3056 attrPresence: function(element, matches) {
3057 return Element.hasAttribute(element, matches[1]);
3060 attr: function(element, matches) {
3061 var nodeValue = Element.readAttribute(element, matches[1]);
3062 return nodeValue && Selector.operators[matches[2]](nodeValue, matches[5] || matches[6]);
3067 // UTILITY FUNCTIONS
3068 // joins two collections
3069 concat: function(a, b) {
3070 for (var i = 0, node; node = b[i]; i++)
3075 // marks an array of nodes for counting
3076 mark: function(nodes) {
3077 var _true = Prototype.emptyFunction;
3078 for (var i = 0, node; node = nodes[i]; i++)
3079 node._countedByPrototype = _true;
3083 unmark: function(nodes) {
3084 for (var i = 0, node; node = nodes[i]; i++)
3085 node._countedByPrototype = undefined;
3089 // mark each child node with its position (for nth calls)
3090 // "ofType" flag indicates whether we're indexing for nth-of-type
3091 // rather than nth-child
3092 index: function(parentNode, reverse, ofType) {
3093 parentNode._countedByPrototype = Prototype.emptyFunction;
3095 for (var nodes = parentNode.childNodes, i = nodes.length - 1, j = 1; i >= 0; i--) {
3096 var node = nodes[i];
3097 if (node.nodeType == 1 && (!ofType || node._countedByPrototype)) node.nodeIndex = j++;
3100 for (var i = 0, j = 1, nodes = parentNode.childNodes; node = nodes[i]; i++)
3101 if (node.nodeType == 1 && (!ofType || node._countedByPrototype)) node.nodeIndex = j++;
3105 // filters out duplicates and extends all nodes
3106 unique: function(nodes) {
3107 if (nodes.length == 0) return nodes;
3108 var results = [], n;
3109 for (var i = 0, l = nodes.length; i < l; i++)
3110 if (!(n = nodes[i])._countedByPrototype) {
3111 n._countedByPrototype = Prototype.emptyFunction;
3112 results.push(Element.extend(n));
3114 return Selector.handlers.unmark(results);
3117 // COMBINATOR FUNCTIONS
3118 descendant: function(nodes) {
3119 var h = Selector.handlers;
3120 for (var i = 0, results = [], node; node = nodes[i]; i++)
3121 h.concat(results, node.getElementsByTagName('*'));
3125 child: function(nodes) {
3126 var h = Selector.handlers;
3127 for (var i = 0, results = [], node; node = nodes[i]; i++) {
3128 for (var j = 0, child; child = node.childNodes[j]; j++)
3129 if (child.nodeType == 1 && child.tagName != '!') results.push(child);
3134 adjacent: function(nodes) {
3135 for (var i = 0, results = [], node; node = nodes[i]; i++) {
3136 var next = this.nextElementSibling(node);
3137 if (next) results.push(next);
3142 laterSibling: function(nodes) {
3143 var h = Selector.handlers;
3144 for (var i = 0, results = [], node; node = nodes[i]; i++)
3145 h.concat(results, Element.nextSiblings(node));
3149 nextElementSibling: function(node) {
3150 while (node = node.nextSibling)
3151 if (node.nodeType == 1) return node;
3155 previousElementSibling: function(node) {
3156 while (node = node.previousSibling)
3157 if (node.nodeType == 1) return node;
3162 tagName: function(nodes, root, tagName, combinator) {
3163 var uTagName = tagName.toUpperCase();
3164 var results = [], h = Selector.handlers;
3167 // fastlane for ordinary descendant combinators
3168 if (combinator == "descendant") {
3169 for (var i = 0, node; node = nodes[i]; i++)
3170 h.concat(results, node.getElementsByTagName(tagName));
3172 } else nodes = this[combinator](nodes);
3173 if (tagName == "*") return nodes;
3175 for (var i = 0, node; node = nodes[i]; i++)
3176 if (node.tagName.toUpperCase() === uTagName) results.push(node);
3178 } else return root.getElementsByTagName(tagName);
3181 id: function(nodes, root, id, combinator) {
3182 var targetNode = $(id), h = Selector.handlers;
3183 if (!targetNode) return [];
3184 if (!nodes && root == document) return [targetNode];
3187 if (combinator == 'child') {
3188 for (var i = 0, node; node = nodes[i]; i++)
3189 if (targetNode.parentNode == node) return [targetNode];
3190 } else if (combinator == 'descendant') {
3191 for (var i = 0, node; node = nodes[i]; i++)
3192 if (Element.descendantOf(targetNode, node)) return [targetNode];
3193 } else if (combinator == 'adjacent') {
3194 for (var i = 0, node; node = nodes[i]; i++)
3195 if (Selector.handlers.previousElementSibling(targetNode) == node)
3196 return [targetNode];
3197 } else nodes = h[combinator](nodes);
3199 for (var i = 0, node; node = nodes[i]; i++)
3200 if (node == targetNode) return [targetNode];
3203 return (targetNode && Element.descendantOf(targetNode, root)) ? [targetNode] : [];
3206 className: function(nodes, root, className, combinator) {
3207 if (nodes && combinator) nodes = this[combinator](nodes);
3208 return Selector.handlers.byClassName(nodes, root, className);
3211 byClassName: function(nodes, root, className) {
3212 if (!nodes) nodes = Selector.handlers.descendant([root]);
3213 var needle = ' ' + className + ' ';
3214 for (var i = 0, results = [], node, nodeClassName; node = nodes[i]; i++) {
3215 nodeClassName = node.className;
3216 if (nodeClassName.length == 0) continue;
3217 if (nodeClassName == className || (' ' + nodeClassName + ' ').include(needle))
3223 attrPresence: function(nodes, root, attr, combinator) {
3224 if (!nodes) nodes = root.getElementsByTagName("*");
3225 if (nodes && combinator) nodes = this[combinator](nodes);
3227 for (var i = 0, node; node = nodes[i]; i++)
3228 if (Element.hasAttribute(node, attr)) results.push(node);
3232 attr: function(nodes, root, attr, value, operator, combinator) {
3233 if (!nodes) nodes = root.getElementsByTagName("*");
3234 if (nodes && combinator) nodes = this[combinator](nodes);
3235 var handler = Selector.operators[operator], results = [];
3236 for (var i = 0, node; node = nodes[i]; i++) {
3237 var nodeValue = Element.readAttribute(node, attr);
3238 if (nodeValue === null) continue;
3239 if (handler(nodeValue, value)) results.push(node);
3244 pseudo: function(nodes, name, value, root, combinator) {
3245 if (nodes && combinator) nodes = this[combinator](nodes);
3246 if (!nodes) nodes = root.getElementsByTagName("*");
3247 return Selector.pseudos[name](nodes, value, root);
3252 'first-child': function(nodes, value, root) {
3253 for (var i = 0, results = [], node; node = nodes[i]; i++) {
3254 if (Selector.handlers.previousElementSibling(node)) continue;
3259 'last-child': function(nodes, value, root) {
3260 for (var i = 0, results = [], node; node = nodes[i]; i++) {
3261 if (Selector.handlers.nextElementSibling(node)) continue;
3266 'only-child': function(nodes, value, root) {
3267 var h = Selector.handlers;
3268 for (var i = 0, results = [], node; node = nodes[i]; i++)
3269 if (!h.previousElementSibling(node) && !h.nextElementSibling(node))
3273 'nth-child': function(nodes, formula, root) {
3274 return Selector.pseudos.nth(nodes, formula, root);
3276 'nth-last-child': function(nodes, formula, root) {
3277 return Selector.pseudos.nth(nodes, formula, root, true);
3279 'nth-of-type': function(nodes, formula, root) {
3280 return Selector.pseudos.nth(nodes, formula, root, false, true);
3282 'nth-last-of-type': function(nodes, formula, root) {
3283 return Selector.pseudos.nth(nodes, formula, root, true, true);
3285 'first-of-type': function(nodes, formula, root) {
3286 return Selector.pseudos.nth(nodes, "1", root, false, true);
3288 'last-of-type': function(nodes, formula, root) {
3289 return Selector.pseudos.nth(nodes, "1", root, true, true);
3291 'only-of-type': function(nodes, formula, root) {
3292 var p = Selector.pseudos;
3293 return p['last-of-type'](p['first-of-type'](nodes, formula, root), formula, root);
3296 // handles the an+b logic
3297 getIndices: function(a, b, total) {
3298 if (a == 0) return b > 0 ? [b] : [];
3299 return $R(1, total).inject([], function(memo, i) {
3300 if (0 == (i - b) % a && (i - b) / a >= 0) memo.push(i);
3305 // handles nth(-last)-child, nth(-last)-of-type, and (first|last)-of-type
3306 nth: function(nodes, formula, root, reverse, ofType) {
3307 if (nodes.length == 0) return [];
3308 if (formula == 'even') formula = '2n+0';
3309 if (formula == 'odd') formula = '2n+1';
3310 var h = Selector.handlers, results = [], indexed = [], m;
3312 for (var i = 0, node; node = nodes[i]; i++) {
3313 if (!node.parentNode._countedByPrototype) {
3314 h.index(node.parentNode, reverse, ofType);
3315 indexed.push(node.parentNode);
3318 if (formula.match(/^\d+$/)) { // just a number
3319 formula = Number(formula);
3320 for (var i = 0, node; node = nodes[i]; i++)
3321 if (node.nodeIndex == formula) results.push(node);
3322 } else if (m = formula.match(/^(-?\d*)?n(([+-])(\d+))?/)) { // an+b
3323 if (m[1] == "-") m[1] = -1;
3324 var a = m[1] ? Number(m[1]) : 1;
3325 var b = m[2] ? Number(m[2]) : 0;
3326 var indices = Selector.pseudos.getIndices(a, b, nodes.length);
3327 for (var i = 0, node, l = indices.length; node = nodes[i]; i++) {
3328 for (var j = 0; j < l; j++)
3329 if (node.nodeIndex == indices[j]) results.push(node);
3337 'empty': function(nodes, value, root) {
3338 for (var i = 0, results = [], node; node = nodes[i]; i++) {
3339 // IE treats comments as element nodes
3340 if (node.tagName == '!' || node.firstChild) continue;
3346 'not': function(nodes, selector, root) {
3347 var h = Selector.handlers, selectorType, m;
3348 var exclusions = new Selector(selector).findElements(root);
3350 for (var i = 0, results = [], node; node = nodes[i]; i++)
3351 if (!node._countedByPrototype) results.push(node);
3352 h.unmark(exclusions);
3356 'enabled': function(nodes, value, root) {
3357 for (var i = 0, results = [], node; node = nodes[i]; i++)
3358 if (!node.disabled && (!node.type || node.type !== 'hidden'))
3363 'disabled': function(nodes, value, root) {
3364 for (var i = 0, results = [], node; node = nodes[i]; i++)
3365 if (node.disabled) results.push(node);
3369 'checked': function(nodes, value, root) {
3370 for (var i = 0, results = [], node; node = nodes[i]; i++)
3371 if (node.checked) results.push(node);
3377 '=': function(nv, v) { return nv == v; },
3378 '!=': function(nv, v) { return nv != v; },
3379 '^=': function(nv, v) { return nv == v || nv && nv.startsWith(v); },
3380 '$=': function(nv, v) { return nv == v || nv && nv.endsWith(v); },
3381 '*=': function(nv, v) { return nv == v || nv && nv.include(v); },
3382 '$=': function(nv, v) { return nv.endsWith(v); },
3383 '*=': function(nv, v) { return nv.include(v); },
3384 '~=': function(nv, v) { return (' ' + nv + ' ').include(' ' + v + ' '); },
3385 '|=': function(nv, v) { return ('-' + (nv || "").toUpperCase() +
3386 '-').include('-' + (v || "").toUpperCase() + '-'); }
3389 split: function(expression) {
3390 var expressions = [];
3391 expression.scan(/(([\w#:.~>+()\s-]+|\*|\[.*?\])+)\s*(,|$)/, function(m) {
3392 expressions.push(m[1].strip());
3397 matchElements: function(elements, expression) {
3398 var matches = $$(expression), h = Selector.handlers;
3400 for (var i = 0, results = [], element; element = elements[i]; i++)
3401 if (element._countedByPrototype) results.push(element);
3406 findElement: function(elements, expression, index) {
3407 if (Object.isNumber(expression)) {
3408 index = expression; expression = false;
3410 return Selector.matchElements(elements, expression || '*')[index || 0];
3413 findChildElements: function(element, expressions) {
3414 expressions = Selector.split(expressions.join(','));
3415 var results = [], h = Selector.handlers;
3416 for (var i = 0, l = expressions.length, selector; i < l; i++) {
3417 selector = new Selector(expressions[i].strip());
3418 h.concat(results, selector.findElements(element));
3420 return (l > 1) ? h.unique(results) : results;
3424 if (Prototype.Browser.IE) {
3425 Object.extend(Selector.handlers, {
3426 // IE returns comment nodes on getElementsByTagName("*").
3428 concat: function(a, b) {
3429 for (var i = 0, node; node = b[i]; i++)
3430 if (node.tagName !== "!") a.push(node);
3434 // IE improperly serializes _countedByPrototype in (inner|outer)HTML.
3435 unmark: function(nodes) {
3436 for (var i = 0, node; node = nodes[i]; i++)
3437 node.removeAttribute('_countedByPrototype');
3444 return Selector.findChildElements(document, $A(arguments));
3447 reset: function(form) {
3452 serializeElements: function(elements, options) {
3453 if (typeof options != 'object') options = { hash: !!options };
3454 else if (Object.isUndefined(options.hash)) options.hash = true;
3455 var key, value, submitted = false, submit = options.submit;
3457 var data = elements.inject({ }, function(result, element) {
3458 if (!element.disabled && element.name) {
3459 key = element.name; value = $(element).getValue();
3460 if (value != null && element.type != 'file' && (element.type != 'submit' || (!submitted &&
3461 submit !== false && (!submit || key == submit) && (submitted = true)))) {
3462 if (key in result) {
3463 // a key is already present; construct an array of values
3464 if (!Object.isArray(result[key])) result[key] = [result[key]];
3465 result[key].push(value);
3467 else result[key] = value;
3473 return options.hash ? data : Object.toQueryString(data);
3478 serialize: function(form, options) {
3479 return Form.serializeElements(Form.getElements(form), options);
3482 getElements: function(form) {
3483 return $A($(form).getElementsByTagName('*')).inject([],
3484 function(elements, child) {
3485 if (Form.Element.Serializers[child.tagName.toLowerCase()])
3486 elements.push(Element.extend(child));
3492 getInputs: function(form, typeName, name) {
3494 var inputs = form.getElementsByTagName('input');
3496 if (!typeName && !name) return $A(inputs).map(Element.extend);
3498 for (var i = 0, matchingInputs = [], length = inputs.length; i < length; i++) {
3499 var input = inputs[i];
3500 if ((typeName && input.type != typeName) || (name && input.name != name))
3502 matchingInputs.push(Element.extend(input));
3505 return matchingInputs;
3508 disable: function(form) {
3510 Form.getElements(form).invoke('disable');
3514 enable: function(form) {
3516 Form.getElements(form).invoke('enable');
3520 findFirstElement: function(form) {
3521 var elements = $(form).getElements().findAll(function(element) {
3522 return 'hidden' != element.type && !element.disabled;
3524 var firstByIndex = elements.findAll(function(element) {
3525 return element.hasAttribute('tabIndex') && element.tabIndex >= 0;
3526 }).sortBy(function(element) { return element.tabIndex }).first();
3528 return firstByIndex ? firstByIndex : elements.find(function(element) {
3529 return ['input', 'select', 'textarea'].include(element.tagName.toLowerCase());
3533 focusFirstElement: function(form) {
3535 form.findFirstElement().activate();
3539 request: function(form, options) {
3540 form = $(form), options = Object.clone(options || { });
3542 var params = options.parameters, action = form.readAttribute('action') || '';
3543 if (action.blank()) action = window.location.href;
3544 options.parameters = form.serialize(true);
3547 if (Object.isString(params)) params = params.toQueryParams();
3548 Object.extend(options.parameters, params);
3551 if (form.hasAttribute('method') && !options.method)
3552 options.method = form.method;
3554 return new Ajax.Request(action, options);
3558 /*--------------------------------------------------------------------------*/
3561 focus: function(element) {
3566 select: function(element) {
3567 $(element).select();
3572 Form.Element.Methods = {
3573 serialize: function(element) {
3574 element = $(element);
3575 if (!element.disabled && element.name) {
3576 var value = element.getValue();
3577 if (value != undefined) {
3579 pair[element.name] = value;
3580 return Object.toQueryString(pair);
3586 getValue: function(element) {
3587 element = $(element);
3588 var method = element.tagName.toLowerCase();
3589 return Form.Element.Serializers[method](element);
3592 setValue: function(element, value) {
3593 element = $(element);
3594 var method = element.tagName.toLowerCase();
3595 Form.Element.Serializers[method](element, value);
3599 clear: function(element) {
3600 $(element).value = '';
3604 present: function(element) {
3605 return $(element).value != '';
3608 activate: function(element) {
3609 element = $(element);
3612 if (element.select && (element.tagName.toLowerCase() != 'input' ||
3613 !['button', 'reset', 'submit'].include(element.type)))
3619 disable: function(element) {
3620 element = $(element);
3621 element.disabled = true;
3625 enable: function(element) {
3626 element = $(element);
3627 element.disabled = false;
3632 /*--------------------------------------------------------------------------*/
3634 var Field = Form.Element;
3635 var $F = Form.Element.Methods.getValue;
3637 /*--------------------------------------------------------------------------*/
3639 Form.Element.Serializers = {
3640 input: function(element, value) {
3641 switch (element.type.toLowerCase()) {
3644 return Form.Element.Serializers.inputSelector(element, value);
3646 return Form.Element.Serializers.textarea(element, value);
3650 inputSelector: function(element, value) {
3651 if (Object.isUndefined(value)) return element.checked ? element.value : null;
3652 else element.checked = !!value;
3655 textarea: function(element, value) {
3656 if (Object.isUndefined(value)) return element.value;
3657 else element.value = value;
3660 select: function(element, value) {
3661 if (Object.isUndefined(value))
3662 return this[element.type == 'select-one' ?
3663 'selectOne' : 'selectMany'](element);
3665 var opt, currentValue, single = !Object.isArray(value);
3666 for (var i = 0, length = element.length; i < length; i++) {
3667 opt = element.options[i];
3668 currentValue = this.optionValue(opt);
3670 if (currentValue == value) {
3671 opt.selected = true;
3675 else opt.selected = value.include(currentValue);
3680 selectOne: function(element) {
3681 var index = element.selectedIndex;
3682 return index >= 0 ? this.optionValue(element.options[index]) : null;
3685 selectMany: function(element) {
3686 var values, length = element.length;
3687 if (!length) return null;
3689 for (var i = 0, values = []; i < length; i++) {
3690 var opt = element.options[i];
3691 if (opt.selected) values.push(this.optionValue(opt));
3696 optionValue: function(opt) {
3697 // extend element because hasAttribute may not be native
3698 return Element.extend(opt).hasAttribute('value') ? opt.value : opt.text;
3702 /*--------------------------------------------------------------------------*/
3704 Abstract.TimedObserver = Class.create(PeriodicalExecuter, {
3705 initialize: function($super, element, frequency, callback) {
3706 $super(callback, frequency);
3707 this.element = $(element);
3708 this.lastValue = this.getValue();
3711 execute: function() {
3712 var value = this.getValue();
3713 if (Object.isString(this.lastValue) && Object.isString(value) ?
3714 this.lastValue != value : String(this.lastValue) != String(value)) {
3715 this.callback(this.element, value);
3716 this.lastValue = value;
3721 Form.Element.Observer = Class.create(Abstract.TimedObserver, {
3722 getValue: function() {
3723 return Form.Element.getValue(this.element);
3727 Form.Observer = Class.create(Abstract.TimedObserver, {
3728 getValue: function() {
3729 return Form.serialize(this.element);
3733 /*--------------------------------------------------------------------------*/
3735 Abstract.EventObserver = Class.create({
3736 initialize: function(element, callback) {
3737 this.element = $(element);
3738 this.callback = callback;
3740 this.lastValue = this.getValue();
3741 if (this.element.tagName.toLowerCase() == 'form')
3742 this.registerFormCallbacks();
3744 this.registerCallback(this.element);
3747 onElementEvent: function() {
3748 var value = this.getValue();
3749 if (this.lastValue != value) {
3750 this.callback(this.element, value);
3751 this.lastValue = value;
3755 registerFormCallbacks: function() {
3756 Form.getElements(this.element).each(this.registerCallback, this);
3759 registerCallback: function(element) {
3761 switch (element.type.toLowerCase()) {
3764 Event.observe(element, 'click', this.onElementEvent.bind(this));
3767 Event.observe(element, 'change', this.onElementEvent.bind(this));
3774 Form.Element.EventObserver = Class.create(Abstract.EventObserver, {
3775 getValue: function() {
3776 return Form.Element.getValue(this.element);
3780 Form.EventObserver = Class.create(Abstract.EventObserver, {
3781 getValue: function() {
3782 return Form.serialize(this.element);
3785 if (!window.Event) var Event = { };
3787 Object.extend(Event, {
3805 relatedTarget: function(event) {
3807 switch(event.type) {
3808 case 'mouseover': element = event.fromElement; break;
3809 case 'mouseout': element = event.toElement; break;
3810 default: return null;
3812 return Element.extend(element);
3816 Event.Methods = (function() {
3819 if (Prototype.Browser.IE) {
3820 var buttonMap = { 0: 1, 1: 4, 2: 2 };
3821 isButton = function(event, code) {
3822 return event.button == buttonMap[code];
3825 } else if (Prototype.Browser.WebKit) {
3826 isButton = function(event, code) {
3828 case 0: return event.which == 1 && !event.metaKey;
3829 case 1: return event.which == 1 && event.metaKey;
3830 default: return false;
3835 isButton = function(event, code) {
3836 return event.which ? (event.which === code + 1) : (event.button === code);
3841 isLeftClick: function(event) { return isButton(event, 0) },
3842 isMiddleClick: function(event) { return isButton(event, 1) },
3843 isRightClick: function(event) { return isButton(event, 2) },
3845 element: function(event) {
3846 event = Event.extend(event);
3848 var node = event.target,
3850 currentTarget = event.currentTarget;
3852 if (currentTarget && currentTarget.tagName) {
3853 // Firefox screws up the "click" event when moving between radio buttons
3854 // via arrow keys. It also screws up the "load" and "error" events on images,
3855 // reporting the document as the target instead of the original image.
3856 if (type === 'load' || type === 'error' ||
3857 (type === 'click' && currentTarget.tagName.toLowerCase() === 'input'
3858 && currentTarget.type === 'radio'))
3859 node = currentTarget;
3861 if (node.nodeType == Node.TEXT_NODE) node = node.parentNode;
3862 return Element.extend(node);
3865 findElement: function(event, expression) {
3866 var element = Event.element(event);
3867 if (!expression) return element;
3868 var elements = [element].concat(element.ancestors());
3869 return Selector.findElement(elements, expression, 0);
3872 pointer: function(event) {
3873 var docElement = document.documentElement,
3874 body = document.body || { scrollLeft: 0, scrollTop: 0 };
3876 x: event.pageX || (event.clientX +
3877 (docElement.scrollLeft || body.scrollLeft) -
3878 (docElement.clientLeft || 0)),
3879 y: event.pageY || (event.clientY +
3880 (docElement.scrollTop || body.scrollTop) -
3881 (docElement.clientTop || 0))
3885 pointerX: function(event) { return Event.pointer(event).x },
3886 pointerY: function(event) { return Event.pointer(event).y },
3888 stop: function(event) {
3889 Event.extend(event);
3890 event.preventDefault();
3891 event.stopPropagation();
3892 event.stopped = true;
3897 Event.extend = (function() {
3898 var methods = Object.keys(Event.Methods).inject({ }, function(m, name) {
3899 m[name] = Event.Methods[name].methodize();
3903 if (Prototype.Browser.IE) {
3904 Object.extend(methods, {
3905 stopPropagation: function() { this.cancelBubble = true },
3906 preventDefault: function() { this.returnValue = false },
3907 inspect: function() { return "[object Event]" }
3910 return function(event) {
3911 if (!event) return false;
3912 if (event._extendedByPrototype) return event;
3914 event._extendedByPrototype = Prototype.emptyFunction;
3915 var pointer = Event.pointer(event);
3916 Object.extend(event, {
3917 target: event.srcElement,
3918 relatedTarget: Event.relatedTarget(event),
3922 return Object.extend(event, methods);
3926 Event.prototype = Event.prototype || document.createEvent("HTMLEvents")['__proto__'];
3927 Object.extend(Event.prototype, methods);
3932 Object.extend(Event, (function() {
3933 var cache = Event.cache;
3935 function getEventID(element) {
3936 if (element._prototypeEventID) return element._prototypeEventID[0];
3937 arguments.callee.id = arguments.callee.id || 1;
3938 return element._prototypeEventID = [++arguments.callee.id];
3941 function getDOMEventName(eventName) {
3942 if (eventName && eventName.include(':')) return "dataavailable";
3946 function getCacheForID(id) {
3947 return cache[id] = cache[id] || { };
3950 function getWrappersForEventName(id, eventName) {
3951 var c = getCacheForID(id);
3952 return c[eventName] = c[eventName] || [];
3955 function createWrapper(element, eventName, handler) {
3956 var id = getEventID(element);
3957 var c = getWrappersForEventName(id, eventName);
3958 if (c.pluck("handler").include(handler)) return false;
3960 var wrapper = function(event) {
3961 if (!Event || !Event.extend ||
3962 (event.eventName && event.eventName != eventName))
3965 Event.extend(event);
3966 handler.call(element, event);
3969 wrapper.handler = handler;
3974 function findWrapper(id, eventName, handler) {
3975 var c = getWrappersForEventName(id, eventName);
3976 return c.find(function(wrapper) { return wrapper.handler == handler });
3979 function destroyWrapper(id, eventName, handler) {
3980 var c = getCacheForID(id);
3981 if (!c[eventName]) return false;
3982 c[eventName] = c[eventName].without(findWrapper(id, eventName, handler));
3985 function destroyCache() {
3986 for (var id in cache)
3987 for (var eventName in cache[id])
3988 cache[id][eventName] = null;
3992 // Internet Explorer needs to remove event handlers on page unload
3993 // in order to avoid memory leaks.
3994 if (window.attachEvent) {
3995 window.attachEvent("onunload", destroyCache);
3998 // Safari has a dummy event handler on page unload so that it won't
3999 // use its bfcache. Safari <= 3.1 has an issue with restoring the "document"
4000 // object when page is returned to via the back button using its bfcache.
4001 if (Prototype.Browser.WebKit) {
4002 window.addEventListener('unload', Prototype.emptyFunction, false);
4006 observe: function(element, eventName, handler) {
4007 element = $(element);
4008 var name = getDOMEventName(eventName);
4010 var wrapper = createWrapper(element, eventName, handler);
4011 if (!wrapper) return element;
4013 if (element.addEventListener) {
4014 element.addEventListener(name, wrapper, false);
4016 element.attachEvent("on" + name, wrapper);
4022 stopObserving: function(element, eventName, handler) {
4023 element = $(element);
4024 var id = getEventID(element), name = getDOMEventName(eventName);
4026 if (!handler && eventName) {
4027 getWrappersForEventName(id, eventName).each(function(wrapper) {
4028 element.stopObserving(eventName, wrapper.handler);
4032 } else if (!eventName) {
4033 Object.keys(getCacheForID(id)).each(function(eventName) {
4034 element.stopObserving(eventName);
4039 var wrapper = findWrapper(id, eventName, handler);
4040 if (!wrapper) return element;
4042 if (element.removeEventListener) {
4043 element.removeEventListener(name, wrapper, false);
4045 element.detachEvent("on" + name, wrapper);
4048 destroyWrapper(id, eventName, handler);
4053 fire: function(element, eventName, memo) {
4054 element = $(element);
4055 if (element == document && document.createEvent && !element.dispatchEvent)
4056 element = document.documentElement;
4059 if (document.createEvent) {
4060 event = document.createEvent("HTMLEvents");
4061 event.initEvent("dataavailable", true, true);
4063 event = document.createEventObject();
4064 event.eventType = "ondataavailable";
4067 event.eventName = eventName;
4068 event.memo = memo || { };
4070 if (document.createEvent) {
4071 element.dispatchEvent(event);
4073 element.fireEvent(event.eventType, event);
4076 return Event.extend(event);
4081 Object.extend(Event, Event.Methods);
4083 Element.addMethods({
4085 observe: Event.observe,
4086 stopObserving: Event.stopObserving
4089 Object.extend(document, {
4090 fire: Element.Methods.fire.methodize(),
4091 observe: Element.Methods.observe.methodize(),
4092 stopObserving: Element.Methods.stopObserving.methodize(),
4097 /* Support for the DOMContentLoaded event is based on work by Dan Webb,
4098 Matthias Miller, Dean Edwards and John Resig. */
4102 function fireContentLoadedEvent() {
4103 if (document.loaded) return;
4104 if (timer) window.clearInterval(timer);
4105 document.fire("dom:loaded");
4106 document.loaded = true;
4109 if (document.addEventListener) {
4110 if (Prototype.Browser.WebKit) {
4111 timer = window.setInterval(function() {
4112 if (/loaded|complete/.test(document.readyState))
4113 fireContentLoadedEvent();
4116 Event.observe(window, "load", fireContentLoadedEvent);
4119 document.addEventListener("DOMContentLoaded",
4120 fireContentLoadedEvent, false);
4124 document.write("<script id=__onDOMContentLoaded defer src=//:><\/script>");
4125 $("__onDOMContentLoaded").onreadystatechange = function() {
4126 if (this.readyState == "complete") {
4127 this.onreadystatechange = null;
4128 fireContentLoadedEvent();
4133 /*------------------------------- DEPRECATED -------------------------------*/
4135 Hash.toQueryString = Object.toQueryString;
4137 var Toggle = { display: Element.toggle };
4139 Element.Methods.childOf = Element.Methods.descendantOf;
4142 Before: function(element, content) {
4143 return Element.insert(element, {before:content});
4146 Top: function(element, content) {
4147 return Element.insert(element, {top:content});
4150 Bottom: function(element, content) {
4151 return Element.insert(element, {bottom:content});
4154 After: function(element, content) {
4155 return Element.insert(element, {after:content});
4159 var $continue = new Error('"throw $continue" is deprecated, use "return" instead');
4161 // This should be moved to script.aculo.us; notice the deprecated methods
4162 // further below, that map to the newer Element methods.
4164 // set to true if needed, warning: firefox performance problems
4165 // NOT neeeded for page scrolling, only if draggable contained in
4166 // scrollable elements
4167 includeScrollOffsets: false,
4169 // must be called before calling withinIncludingScrolloffset, every time the
4171 prepare: function() {
4172 this.deltaX = window.pageXOffset
4173 || document.documentElement.scrollLeft
4174 || document.body.scrollLeft
4176 this.deltaY = window.pageYOffset
4177 || document.documentElement.scrollTop
4178 || document.body.scrollTop
4182 // caches x/y coordinate pair to use with overlap
4183 within: function(element, x, y) {
4184 if (this.includeScrollOffsets)
4185 return this.withinIncludingScrolloffsets(element, x, y);
4188 this.offset = Element.cumulativeOffset(element);
4190 return (y >= this.offset[1] &&
4191 y < this.offset[1] + element.offsetHeight &&
4192 x >= this.offset[0] &&
4193 x < this.offset[0] + element.offsetWidth);
4196 withinIncludingScrolloffsets: function(element, x, y) {
4197 var offsetcache = Element.cumulativeScrollOffset(element);
4199 this.xcomp = x + offsetcache[0] - this.deltaX;
4200 this.ycomp = y + offsetcache[1] - this.deltaY;
4201 this.offset = Element.cumulativeOffset(element);
4203 return (this.ycomp >= this.offset[1] &&
4204 this.ycomp < this.offset[1] + element.offsetHeight &&
4205 this.xcomp >= this.offset[0] &&
4206 this.xcomp < this.offset[0] + element.offsetWidth);
4209 // within must be called directly before
4210 overlap: function(mode, element) {
4211 if (!mode) return 0;
4212 if (mode == 'vertical')
4213 return ((this.offset[1] + element.offsetHeight) - this.ycomp) /
4214 element.offsetHeight;
4215 if (mode == 'horizontal')
4216 return ((this.offset[0] + element.offsetWidth) - this.xcomp) /
4217 element.offsetWidth;
4220 // Deprecation layer -- use newer Element methods now (1.5.2).
4222 cumulativeOffset: Element.Methods.cumulativeOffset,
4224 positionedOffset: Element.Methods.positionedOffset,
4226 absolutize: function(element) {
4228 return Element.absolutize(element);
4231 relativize: function(element) {
4233 return Element.relativize(element);
4236 realOffset: Element.Methods.cumulativeScrollOffset,
4238 offsetParent: Element.Methods.getOffsetParent,
4240 page: Element.Methods.viewportOffset,
4242 clone: function(source, target, options) {
4243 options = options || { };
4244 return Element.clonePosition(target, source, options);
4248 /*--------------------------------------------------------------------------*/
4250 if (!document.getElementsByClassName) document.getElementsByClassName = function(instanceMethods){
4251 function iter(name) {
4252 return name.blank() ? null : "[contains(concat(' ', @class, ' '), ' " + name + " ')]";
4255 instanceMethods.getElementsByClassName = Prototype.BrowserFeatures.XPath ?
4256 function(element, className) {
4257 className = className.toString().strip();
4258 var cond = /\s/.test(className) ? $w(className).map(iter).join('') : iter(className);
4259 return cond ? document._getElementsByXPath('.//*' + cond, element) : [];
4260 } : function(element, className) {
4261 className = className.toString().strip();
4262 var elements = [], classNames = (/\s/.test(className) ? $w(className) : null);
4263 if (!classNames && !className) return elements;
4265 var nodes = $(element).getElementsByTagName('*');
4266 className = ' ' + className + ' ';
4268 for (var i = 0, child, cn; child = nodes[i]; i++) {
4269 if (child.className && (cn = ' ' + child.className + ' ') && (cn.include(className) ||
4270 (classNames && classNames.all(function(name) {
4271 return !name.toString().blank() && cn.include(' ' + name + ' ');
4273 elements.push(Element.extend(child));
4278 return function(className, parentElement) {
4279 return $(parentElement || document.body).getElementsByClassName(className);
4283 /*--------------------------------------------------------------------------*/
4285 Element.ClassNames = Class.create();
4286 Element.ClassNames.prototype = {
4287 initialize: function(element) {
4288 this.element = $(element);
4291 _each: function(iterator) {
4292 this.element.className.split(/\s+/).select(function(name) {
4293 return name.length > 0;
4297 set: function(className) {
4298 this.element.className = className;
4301 add: function(classNameToAdd) {
4302 if (this.include(classNameToAdd)) return;
4303 this.set($A(this).concat(classNameToAdd).join(' '));
4306 remove: function(classNameToRemove) {
4307 if (!this.include(classNameToRemove)) return;
4308 this.set($A(this).without(classNameToRemove).join(' '));
4311 toString: function() {
4312 return $A(this).join(' ');
4316 Object.extend(Element.ClassNames.prototype, Enumerable);
4318 /*--------------------------------------------------------------------------*/
4320 Element.addMethods();