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Militärtechnik

Bundeswehr rüstet Drohnen mit Waffen auf

 
(3)
Von Hans-Arthur Marsiske 23. Februar 2009, 11:34 Uhr

Die USA machen es vor: Waffenstarrende Drohnen sind längst Standard in der Kriegsführung. Nun will das deutsche Militär im Ernstfall ebenfalls hochgerüstete Roboter ins Gefecht schicken. Für die Erweiterung der militärischen Fähigkeiten seien Drohnen unabdingbar, heißt es als Begründung.

Foto: US Air Force Digital

Die US-amerikanische Drohne MQ-1 Predator beschoss 2001 einen Autokonvoi, in dem Osama Bin Laden vermutet wurde

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Waffensysteme der Zukunft

Die kleinen Drohnen sind vielseitig einsetzbar

Die US-Marine plant eine neue Kanone

Unbemannte Fahrzeuge und Roboter der Bundeswehr werden zu Waffenträgern – das ist das Fazit eines zweitägigen Forums, das die Deutsche Gesellschaft für Wehrtechnik (DWT) kürzlich in Bad Godesberg veranstaltete. Derzeit würden unbemannte Fluggeräte mit bewaffneten Systemen erweitert, stellte Tagungsleiter Ullrich Heym vom Bundesverteidigungsministerium fest. Es ist die Rede von „Wirkmitteln“ als Zuladung oder von der „Einrüstung letaler Waffen“.

Noch vor Kurzem wurde das Gegenteil behauptet. So sagte der stellvertretende Heeresinspekteur, Generalleutnant Günter Weiler, im Juli 2008 bei der europäischen Leistungsschau Robotik (Elrob), bewaffnete Systeme würden bewusst nicht angestrebt. In der Tat dienten ferngesteuerte Systeme lange Zeit vor allem der Überwachung. Im Golfkrieg von 1991 übermittelten fliegende Drohnen Zielkoordinaten an die vor der Küste stationierten Kriegsschiffe, 1999 übermittelten sie in Echtzeit Bilder aus dem Kosovo. Datensammeln und Beobachten sind auch weiterhin die Hauptaufgaben unbemannter Systeme. Daneben sollen sie aber nun auch bei der Bundeswehr in der Lage sein, sofort zu reagieren.

Von den USA wurden die ersten Roboterangriffe 2002 in Afghanistan durchgeführt. Damals feuerte eine Aufklärungsdrohne MQ-1 Predator Raketen auf einen Autokonvoi, in dem Osama Bin Laden vermutet wurde. Der letzte bekannt gewordene Angriff erfolgte am 23.Januar 2009, als Predators mehrere Häuser im pakistanischen Grenzgebiet zu Afghanistan zerstörten und 18 Menschen töteten.

Bei unbemannten Systemen sind Fluggeräte bislang am weitesten ausgereift. Die im Kosovo-Konflikt verwendeten Drohnen etwa seien „nicht ganz ohne Einfluss auf den Ausgang dieses Krieges“ gewesen, meinte DWT-Vorsitzender Vizeadmiral a.D. Hans Frank.

Die Fähigkeit zur raschen Reaktion auf Erkenntnisse vor Ort wünscht sich auch die deutsche Luftwaffe – und wird sie bekommen. Noch ist nicht entschieden, ob die amerikanischen PredatorB angeschafft werden oder das konkurrierende israelische Modell HeronTP. Aber klar ist: Das deutsche Militär wird zukünftig bewaffnete Roboter ins Gefecht schicken.

Drohnen lieferten auch früher schon Zielkoordinaten für weiter entfernte Raketenbasen und Artillerie. Die Geschosse vom unbemannten Fluggerät direkt abzufeuern ist in militärischer Logik eine unausweichliche Konsequenz.

Während es in der Diskussion über unbemannte bewaffnete Systeme lange Zeit vor allem um den Schutz von Soldaten ging, sollen jetzt die militärischen Fähigkeiten generell erweitert werden. Das betonten mehrere Redner beim DWT-Forum und nannten wiederholt die „asymmetrische Bedrohung“ etwa durch Selbstmordattentäter. Sie erfordere verstärkte Aufklärungs- und Überwachungsaktivitäten. So ist beispielsweise ein sich schnell bewegendes Ziel wie ein fahrendes Auto auf andere Weise als mit einer autonom reagierenden bewaffneten Drohne kaum zu treffen.

Joachim Kimpel vom Bundesamt für Wehrtechnik und Beschaffung brachte das Beispiel eines in einem Hafen stationierten Militärschiffs, das auf Angriffe durch mit Sprengstoff gefüllte Boote vorbereitet sein müsse. „Mit Technologie allein ist diese Bedrohung nicht zu erkennen“, so Kimpel. Ein angreifendes Sprengstoffboot müsse zwischen anderen Fahrzeugen herausgefiltert werden. Hierbei sollen „abgesetzte Sensorträger“ helfen – unbemannte Vehikel, die sich sowohl auf der Wasseroberfläche als auch unter Wasser bewegen können.

Insbesondere bei Unterwassersystemen gibt es einen starken Entwicklungsdruck hin zu autonomen Funktionen, da die Kommunikation mit den sie steuernden Plattformen sehr schwierig ist. Jörg Schmidt vom Bundesamt für Wehrtechnik und Beschaffung berichtete von einer Kooperation mit Singapur, wo in die Kaimauer des Hafens Unterwassergaragen gebaut werden sollen, um von dort aus mit Robotern eine kontinuierliche Überwachung des potenziellen Angriffsziels zu gewährleisten. Die angestrebten autonomen Funktionen solcher Unterwasserwächter beinhalten Hindernisvermeidung und die automatische Identifikation und Klassifikation von anderen Fahrzeugen.

Die Tauchgeräte sollen Veränderungen der Umgebung erkennen und nach Möglichkeit auch gefährliche Gegenstände wie Minen identifizieren können. Auch der Einsatz in Schwärmen und Verbänden ist ein Ziel der Entwickler.

Wenn es um das rasche Beseitigen von Bedrohungen auf See geht, sind Oberflächenfahrzeuge den Unterwasservehikeln allerdings klar überlegen. Danny Anbary von der israelischen Firma Elbit Systems präsentierte das System Silver Marlin, ein 45 Knoten schnelles Boot, das Zielkoordinaten an die Kontrollstation übermitteln, aber auch selber mit einem 7,62-Millimeter-Maschinengewehr das Feuer eröffnen kann. Das Gewehr werde von einem Operator über einen eigenen Kommunikationskanal ausgelöst, versicherte Anbary. Das Boot könne autonom vorgegebene Koordinaten ansteuern und sich an Wind und Wellen anpassen. Vergleichbare Systeme sind hierzulande noch in der Erprobung. Dazu zählen RoboShip von der Firma Rheinmetall und das von der Veers GmbH entwickelte SeewieselII.

Am weitesten von der Einsatzreife entfernt sind unbemannte Landsysteme (mit und ohne Bewaffnung). Anders als Luft- und Wassersysteme bewegen sie sich nicht in einem homogenen Medium und müssen sich in einer sehr unstrukturierten Umgebung orientieren. Zunächst werden wohl vor allem besonders gefährdete Munitions- und Kraftstofftransporter unbemannt fahren. Den Schutz solcher Konvois müssten indessen vorerst weiterhin bemannte Fahrzeuge übernehmen. Die Ausrüstung auch unbemannter Landfahrzeuge mit Waffen zum Schutz scheint jedoch langfristig unausweichlich.

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Bundeswehr rüstet Drohnen mit Waffen auf

Die USA machen es vor: Waffenstarrende Drohnen sind längst Standard in der Kriegsführung. Nun will das deutsche Militär im Ernstfall ebenfalls hochgerüstete Roboter ins Gefecht schicken. Für die Erweiterung der militärischen Fähigkeiten seien Drohnen unabdingbar, heißt es als Begründung.

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Bundeswehr rüstet Drohnen mit Waffen auf

Die USA machen es vor: Waffenstarrende Drohnen sind längst Standard in der Kriegsführung. Nun will das deutsche Militär im Ernstfall ebenfalls hochgerüstete Roboter ins Gefecht schicken. Für die Erweiterung der militärischen Fähigkeiten seien Drohnen unabdingbar, heißt es als Begründung.

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Kommentare

23.02.2009,
11:45 Uhr
Früher oder später... sagt:
...wird jede Technologie allgemeiner Standard. Und gerade mit diesen "kleinen, sauberen Wunderwerken" werden uns die Terroristen der Zukunft ganz schön in Atem halten...
23.02.2009,
11:55 Uhr
Ellen Langer-Denker sagt:
Gottchen, diese Krieger - hoffnungslos hinken sie der Zeit hinterher. Heutzutage werden Länder nicht mehr mit Haubitzen und Knobelbechern erobert, sondern sie werden einfach gekauft. Die "Feinde" werden nicht mehr zusammengebombt, sondern langsam aber sicher "provinzialisiert". Die USA "erobern" den Irak und Afghanistan, während China klammheimlich Afrika mit seinen Rohstoffen und unauffällig weltweit die Ackerflächen aufkauft. Auch im Inland hat sich die Situation verändert. Heutzutage werden abgewirtschaftete Politiksysteme nicht mehr aufs Schafott geschickt, sondern mittels Abstimmung zum Teufel gejagt.
23.02.2009,
14:04 Uhr
Nelson sagt:
Und Ihr habt über Sarah Connors Warnungen gelacht. Jetzt ist's zu spät.

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Bitte versuchen Sie es spter noch einmal."; translation_array["article.recommenSmsSuccess"]="Der Artikel wurde erfolgreich an \{0\} verschickt."; translation_array["article.form.nameRecipient"]="Name Empfänger"; translation_array["article.form.mobileRecipient"]="E-Mail Empfänger"; translation_array["article.form.name"]="Ihr Name"; translation_array["article.form.mobile"]="Ihre Mobilfunknummer"; translation_array["article.form.code"]="Code"; translation_array["article.form.mobileRecipient"]="Mobilfunknummer Empfänger"; translation_array["article.form.mailRecipient"]="E-Mail Empfänger"; translation_array["article.form.mail"]="Ihre E-Mail"; translation_array["article.form.remark"]="Bemerkung"; _(http://www.welt.de/scripts/25/general.jsObplist00 X$versionT$topY$archiverX$objects_WebResourceResponse_NSKeyedArchiver& &,-345UVWXYZ[\]^_`abcdefghijklmnostU$null  !"#$%V$classR$3R$8S$10S$11R$5R$6R$4R$7R$2R$9R$0R$1%$ '()$+WNS.base[NS.relative_(http://www.welt.de/scripts/25/general.js./01X$classesZ$classname12UNSURLXNSObject#A(3 6789GWNS.keysZNS.objects#:;<=>?@ABCDEF HIJKLMNOPQRST !"WX-Cache]Cache-Control_Content-Encoding\Content-TypeVServer^Content-LengthTDateZConnectionSAgeWExpires]Accept-Ranges^X-Cache-LookupTVary_HIT from www.welt.de_max-age=1728000Tgzip_application/x-javascript_Apache/2.2.3 (Red Hat)U89729_Sat, 14 Feb 2009 22:37:41 GMTZkeep-aliveT5386_Fri, 06 Mar 2009 22:37:41 GMTUbytes_HIT from www.welt.de:80_Accept-Encoding./pqqr2_NSMutableDictionary\NSDictionary./uvvw2_NSHTTPURLResponse]NSURLResponse)27:PRd?DMX[ajsu| -2=AIWfk#)CUZ^txO/* ---- prototype ---- */ /* Prototype JavaScript framework, version 1.6.0 * (c) 2005-2007 Sam Stephenson * * Prototype is freely distributable under the terms of an MIT-style license. * For details, see the Prototype web site: http://www.prototypejs.org/ * *--------------------------------------------------------------------------*/ var Prototype = { Version: '1.6.0', Browser: { IE: !!(window.attachEvent && !window.opera), Opera: !!window.opera, WebKit: navigator.userAgent.indexOf('AppleWebKit/') > -1, Gecko: navigator.userAgent.indexOf('Gecko') > -1 && navigator.userAgent.indexOf('KHTML') == -1, MobileSafari: !!navigator.userAgent.match(/Apple.*Mobile.*Safari/) }, BrowserFeatures: { XPath: !!document.evaluate, ElementExtensions: !!window.HTMLElement, SpecificElementExtensions: document.createElement('div').__proto__ && document.createElement('div').__proto__ !== document.createElement('form').__proto__ }, ScriptFragment: ']*>([\\S\\s]*?)<\/script>', JSONFilter: /^\/\*-secure-([\s\S]*)\*\/\s*$/, emptyFunction: function() { }, K: function(x) { return x } }; if (Prototype.Browser.MobileSafari) Prototype.BrowserFeatures.SpecificElementExtensions = false; if (Prototype.Browser.WebKit) Prototype.BrowserFeatures.XPath = false; /* Based on Alex Arnell's inheritance implementation. */ var Class = { create: function() { var parent = null, properties = $A(arguments); if (Object.isFunction(properties[0])) parent = properties.shift(); function klass() { this.initialize.apply(this, arguments); } Object.extend(klass, Class.Methods); klass.superclass = parent; klass.subclasses = []; if (parent) { var subclass = function() { }; subclass.prototype = parent.prototype; klass.prototype = new subclass; parent.subclasses.push(klass); } for (var i = 0; i < properties.length; i++) klass.addMethods(properties[i]); if (!klass.prototype.initialize) klass.prototype.initialize = Prototype.emptyFunction; klass.prototype.constructor = klass; return klass; } }; Class.Methods = { addMethods: function(source) { var ancestor = this.superclass && this.superclass.prototype; var properties = Object.keys(source); if (!Object.keys({ toString: true }).length) properties.push("toString", "valueOf"); for (var i = 0, length = properties.length; i < length; i++) { var property = properties[i], value = source[property]; if (ancestor && Object.isFunction(value) && value.argumentNames().first() == "$super") { var method = value, value = Object.extend((function(m) { return function() { return ancestor[m].apply(this, arguments) }; })(property).wrap(method), { valueOf: function() { return method }, toString: function() { return method.toString() } }); } this.prototype[property] = value; } return this; } }; var Abstract = { }; Object.extend = function(destination, source) { for (var property in source) destination[property] = source[property]; return destination; }; Object.extend(Object, { inspect: function(object) { try { if (object === undefined) return 'undefined'; if (object === null) return 'null'; return object.inspect ? object.inspect() : object.toString(); } catch (e) { if (e instanceof RangeError) return '...'; throw e; } }, toJSON: function(object) { var type = typeof object; switch (type) { case 'undefined': case 'function': case 'unknown': return; case 'boolean': return object.toString(); } if (object === null) return 'null'; if (object.toJSON) return object.toJSON(); if (Object.isElement(object)) return; var results = []; for (var property in object) { var value = Object.toJSON(object[property]); if (value !== undefined) results.push(property.toJSON() + ': ' + value); } return '{' + results.join(', ') + '}'; }, toQueryString: function(object) { return $H(object).toQueryString(); }, toHTML: function(object) { return object && object.toHTML ? object.toHTML() : String.interpret(object); }, keys: function(object) { var keys = []; for (var property in object) keys.push(property); return keys; }, values: function(object) { var values = []; for (var property in object) values.push(object[property]); return values; }, clone: function(object) { return Object.extend({ }, object); }, isElement: function(object) { return object && object.nodeType == 1; }, isArray: function(object) { return object && object.constructor === Array; }, isHash: function(object) { return object instanceof Hash; }, isFunction: function(object) { return typeof object == "function"; }, isString: function(object) { return typeof object == "string"; }, isNumber: function(object) { return typeof object == "number"; }, isUndefined: function(object) { return typeof object == "undefined"; } }); Object.extend(Function.prototype, { argumentNames: function() { var names = this.toString().match(/^[\s\(]*function[^(]*\((.*?)\)/)[1].split(",").invoke("strip"); return names.length == 1 && !names[0] ? [] : names; }, bind: function() { if (arguments.length < 2 && arguments[0] === undefined) return this; var __method = this, args = $A(arguments), object = args.shift(); return function() { return __method.apply(object, args.concat($A(arguments))); } }, bindAsEventListener: function() { var __method = this, args = $A(arguments), object = args.shift(); return function(event) { return __method.apply(object, [event || window.event].concat(args)); } }, curry: function() { if (!arguments.length) return this; var __method = this, args = $A(arguments); return function() { return __method.apply(this, args.concat($A(arguments))); } }, delay: function() { var __method = this, args = $A(arguments), timeout = args.shift() * 1000; return window.setTimeout(function() { return __method.apply(__method, args); }, timeout); }, wrap: function(wrapper) { var __method = this; return function() { return wrapper.apply(this, [__method.bind(this)].concat($A(arguments))); } }, methodize: function() { if (this._methodized) return this._methodized; var __method = this; return this._methodized = function() { return __method.apply(null, [this].concat($A(arguments))); }; } }); Function.prototype.defer = Function.prototype.delay.curry(0.01); Date.prototype.toJSON = function() { return '"' + this.getUTCFullYear() + '-' + (this.getUTCMonth() + 1).toPaddedString(2) + '-' + this.getUTCDate().toPaddedString(2) + 'T' + this.getUTCHours().toPaddedString(2) + ':' + this.getUTCMinutes().toPaddedString(2) + ':' + this.getUTCSeconds().toPaddedString(2) + 'Z"'; }; var Try = { these: function() { var returnValue; for (var i = 0, length = arguments.length; i < length; i++) { var lambda = arguments[i]; try { returnValue = lambda(); break; } catch (e) { } } return returnValue; } }; RegExp.prototype.match = RegExp.prototype.test; RegExp.escape = function(str) { return String(str).replace(/([.*+?^=!:${}()|[\]\/\\])/g, '\\$1'); }; /*--------------------------------------------------------------------------*/ var PeriodicalExecuter = Class.create({ initialize: function(callback, frequency) { this.callback = callback; this.frequency = frequency; this.currentlyExecuting = false; this.registerCallback(); }, registerCallback: function() { this.timer = setInterval(this.onTimerEvent.bind(this), this.frequency * 1000); }, execute: function() { this.callback(this); }, stop: function() { if (!this.timer) return; clearInterval(this.timer); this.timer = null; }, onTimerEvent: function() { if (!this.currentlyExecuting) { try { this.currentlyExecuting = true; this.execute(); } finally { this.currentlyExecuting = false; } } } }); Object.extend(String, { interpret: function(value) { return value == null ? '' : String(value); }, specialChar: { '\b': '\\b', '\t': '\\t', '\n': '\\n', '\f': '\\f', '\r': '\\r', '\\': '\\\\' } }); Object.extend(String.prototype, { gsub: function(pattern, replacement) { var result = '', source = this, match; replacement = arguments.callee.prepareReplacement(replacement); while (source.length > 0) { if (match = source.match(pattern)) { result += source.slice(0, match.index); result += String.interpret(replacement(match)); source = source.slice(match.index + match[0].length); } else { result += source, source = ''; } } return result; }, sub: function(pattern, replacement, count) { replacement = this.gsub.prepareReplacement(replacement); count = count === undefined ? 1 : count; return this.gsub(pattern, function(match) { if (--count < 0) return match[0]; return replacement(match); }); }, scan: function(pattern, iterator) { this.gsub(pattern, iterator); return String(this); }, truncate: function(length, truncation) { length = length || 30; truncation = truncation === undefined ? '...' : truncation; return this.length > length ? this.slice(0, length - truncation.length) + truncation : String(this); }, strip: function() { return this.replace(/^\s+/, '').replace(/\s+$/, ''); }, stripTags: function() { return this.replace(/<\/?[^>]+>/gi, ''); }, stripScripts: function() { return this.replace(new RegExp(Prototype.ScriptFragment, 'img'), ''); }, extractScripts: function() { var matchAll = new RegExp(Prototype.ScriptFragment, 'img'); var matchOne = new RegExp(Prototype.ScriptFragment, 'im'); return (this.match(matchAll) || []).map(function(scriptTag) { return (scriptTag.match(matchOne) || ['', ''])[1]; }); }, evalScripts: function() { return this.extractScripts().map(function(script) { return eval(script) }); }, escapeHTML: function() { var self = arguments.callee; self.text.data = this; return self.div.innerHTML; }, unescapeHTML: function() { var div = new Element('div'); div.innerHTML = this.stripTags(); return div.childNodes[0] ? (div.childNodes.length > 1 ? $A(div.childNodes).inject('', function(memo, node) { return memo+node.nodeValue }) : div.childNodes[0].nodeValue) : ''; }, toQueryParams: function(separator) { var match = this.strip().match(/([^?#]*)(#.*)?$/); if (!match) return { }; return match[1].split(separator || '&').inject({ }, function(hash, pair) { if ((pair = pair.split('='))[0]) { var key = decodeURIComponent(pair.shift()); var value = pair.length > 1 ? pair.join('=') : pair[0]; if (value != undefined) value = decodeURIComponent(value); if (key in hash) { if (!Object.isArray(hash[key])) hash[key] = [hash[key]]; hash[key].push(value); } else hash[key] = value; } return hash; }); }, toArray: function() { return this.split(''); }, succ: function() { return this.slice(0, this.length - 1) + String.fromCharCode(this.charCodeAt(this.length - 1) + 1); }, times: function(count) { return count < 1 ? '' : new Array(count + 1).join(this); }, camelize: function() { var parts = this.split('-'), len = parts.length; if (len == 1) return parts[0]; var camelized = this.charAt(0) == '-' ? parts[0].charAt(0).toUpperCase() + parts[0].substring(1) : parts[0]; for (var i = 1; i < len; i++) camelized += parts[i].charAt(0).toUpperCase() + parts[i].substring(1); return camelized; }, capitalize: function() { return this.charAt(0).toUpperCase() + this.substring(1).toLowerCase(); }, underscore: function() { return this.gsub(/::/, '/').gsub(/([A-Z]+)([A-Z][a-z])/,'#{1}_#{2}').gsub(/([a-z\d])([A-Z])/,'#{1}_#{2}').gsub(/-/,'_').toLowerCase(); }, dasherize: function() { return this.gsub(/_/,'-'); }, inspect: function(useDoubleQuotes) { var escapedString = this.gsub(/[\x00-\x1f\\]/, function(match) { var character = String.specialChar[match[0]]; return character ? character : '\\u00' + match[0].charCodeAt().toPaddedString(2, 16); }); if (useDoubleQuotes) return '"' + escapedString.replace(/"/g, '\\"') + '"'; return "'" + escapedString.replace(/'/g, '\\\'') + "'"; }, toJSON: function() { return this.inspect(true); }, unfilterJSON: function(filter) { return this.sub(filter || Prototype.JSONFilter, '#{1}'); }, isJSON: function() { var str = this.replace(/\\./g, '@').replace(/"[^"\\\n\r]*"/g, ''); return (/^[,:{}\[\]0-9.\-+Eaeflnr-u \n\r\t]*$/).test(str); }, evalJSON: function(sanitize) { var json = this.unfilterJSON(); try { if (!sanitize || json.isJSON()) return eval('(' + json + ')'); } catch (e) { } throw new SyntaxError('Badly formed JSON string: ' + this.inspect()); }, include: function(pattern) { return this.indexOf(pattern) > -1; }, startsWith: function(pattern) { return this.indexOf(pattern) === 0; }, endsWith: function(pattern) { var d = this.length - pattern.length; return d >= 0 && this.lastIndexOf(pattern) === d; }, empty: function() { return this == ''; }, blank: function() { return /^\s*$/.test(this); }, interpolate: function(object, pattern) { return new Template(this, pattern).evaluate(object); } }); if (Prototype.Browser.WebKit || Prototype.Browser.IE) Object.extend(String.prototype, { escapeHTML: function() { return this.replace(/&/g,'&').replace(//g,'>'); }, unescapeHTML: function() { return this.replace(/&/g,'&').replace(/</g,'<').replace(/>/g,'>'); } }); String.prototype.gsub.prepareReplacement = function(replacement) { if (Object.isFunction(replacement)) return replacement; var template = new Template(replacement); return function(match) { return template.evaluate(match) }; }; String.prototype.parseQuery = String.prototype.toQueryParams; Object.extend(String.prototype.escapeHTML, { div: document.createElement('div'), text: document.createTextNode('') }); with (String.prototype.escapeHTML) div.appendChild(text); var Template = Class.create({ initialize: function(template, pattern) { this.template = template.toString(); this.pattern = pattern || Template.Pattern; }, evaluate: function(object) { if (Object.isFunction(object.toTemplateReplacements)) object = object.toTemplateReplacements(); return this.template.gsub(this.pattern, function(match) { if (object == null) return ''; var before = match[1] || ''; if (before == '\\') return match[2]; var ctx = object, expr = match[3]; var pattern = /^([^.[]+|\[((?:.*?[^\\])?)\])(\.|\[|$)/, match = pattern.exec(expr); if (match == null) return before; while (match != null) { var comp = match[1].startsWith('[') ? match[2].gsub('\\\\]', ']') : match[1]; ctx = ctx[comp]; if (null == ctx || '' == match[3]) break; expr = expr.substring('[' == match[3] ? match[1].length : match[0].length); match = pattern.exec(expr); } return before + String.interpret(ctx); }.bind(this)); } }); Template.Pattern = /(^|.|\r|\n)(#\{(.*?)\})/; var $break = { }; var Enumerable = { each: function(iterator, context) { var index = 0; iterator = iterator.bind(context); try { this._each(function(value) { iterator(value, index++); }); } catch (e) { if (e != $break) throw e; } return this; }, eachSlice: function(number, iterator, context) { iterator = iterator ? iterator.bind(context) : Prototype.K; var index = -number, slices = [], array = this.toArray(); while ((index += number) < array.length) slices.push(array.slice(index, index+number)); return slices.collect(iterator, context); }, all: function(iterator, context) { iterator = iterator ? iterator.bind(context) : Prototype.K; var result = true; this.each(function(value, index) { result = result && !!iterator(value, index); if (!result) throw $break; }); return result; }, any: function(iterator, context) { iterator = iterator ? iterator.bind(context) : Prototype.K; var result = false; this.each(function(value, index) { if (result = !!iterator(value, index)) throw $break; }); return result; }, collect: function(iterator, context) { iterator = iterator ? iterator.bind(context) : Prototype.K; var results = []; this.each(function(value, index) { results.push(iterator(value, index)); }); return results; }, detect: function(iterator, context) { iterator = iterator.bind(context); var result; this.each(function(value, index) { if (iterator(value, index)) { result = value; throw $break; } }); return result; }, findAll: function(iterator, context) { iterator = iterator.bind(context); var results = []; this.each(function(value, index) { if (iterator(value, index)) results.push(value); }); return results; }, grep: function(filter, iterator, context) { iterator = iterator ? iterator.bind(context) : Prototype.K; var results = []; if (Object.isString(filter)) filter = new RegExp(filter); this.each(function(value, index) { if (filter.match(value)) results.push(iterator(value, index)); }); return results; }, include: function(object) { if (Object.isFunction(this.indexOf)) if (this.indexOf(object) != -1) return true; var found = false; this.each(function(value) { if (value == object) { found = true; throw $break; } }); return found; }, inGroupsOf: function(number, fillWith) { fillWith = fillWith === undefined ? null : fillWith; return this.eachSlice(number, function(slice) { while(slice.length < number) slice.push(fillWith); return slice; }); }, inject: function(memo, iterator, context) { iterator = iterator.bind(context); this.each(function(value, index) { memo = iterator(memo, value, index); }); return memo; }, invoke: function(method) { var args = $A(arguments).slice(1); return this.map(function(value) { return value[method].apply(value, args); }); }, max: function(iterator, context) { iterator = iterator ? iterator.bind(context) : Prototype.K; var result; this.each(function(value, index) { value = iterator(value, index); if (result == undefined || value >= result) result = value; }); return result; }, min: function(iterator, context) { iterator = iterator ? iterator.bind(context) : Prototype.K; var result; this.each(function(value, index) { value = iterator(value, index); if (result == undefined || value < result) result = value; }); return result; }, partition: function(iterator, context) { iterator = iterator ? iterator.bind(context) : Prototype.K; var trues = [], falses = []; this.each(function(value, index) { (iterator(value, index) ? trues : falses).push(value); }); return [trues, falses]; }, pluck: function(property) { var results = []; this.each(function(value) { results.push(value[property]); }); return results; }, reject: function(iterator, context) { iterator = iterator.bind(context); var results = []; this.each(function(value, index) { if (!iterator(value, index)) results.push(value); }); return results; }, sortBy: function(iterator, context) { iterator = iterator.bind(context); return this.map(function(value, index) { return {value: value, criteria: iterator(value, index)}; }).sort(function(left, right) { var a = left.criteria, b = right.criteria; return a < b ? -1 : a > b ? 1 : 0; }).pluck('value'); }, toArray: function() { return this.map(); }, zip: function() { var iterator = Prototype.K, args = $A(arguments); if (Object.isFunction(args.last())) iterator = args.pop(); var collections = [this].concat(args).map($A); return this.map(function(value, index) { return iterator(collections.pluck(index)); }); }, size: function() { return this.toArray().length; }, inspect: function() { return '#'; } }; Object.extend(Enumerable, { map: Enumerable.collect, find: Enumerable.detect, select: Enumerable.findAll, filter: Enumerable.findAll, member: Enumerable.include, entries: Enumerable.toArray, every: Enumerable.all, some: Enumerable.any }); function $A(iterable) { if (!iterable) return []; if (iterable.toArray) return iterable.toArray(); var length = iterable.length, results = new Array(length); while (length--) results[length] = iterable[length]; return results; } if (Prototype.Browser.WebKit) { function $A(iterable) { if (!iterable) return []; if (!(Object.isFunction(iterable) && iterable == '[object NodeList]') && iterable.toArray) return iterable.toArray(); var length = iterable.length, results = new Array(length); while (length--) results[length] = iterable[length]; return results; } } Array.from = $A; Object.extend(Array.prototype, Enumerable); if (!Array.prototype._reverse) Array.prototype._reverse = Array.prototype.reverse; Object.extend(Array.prototype, { _each: function(iterator) { for (var i = 0, length = this.length; i < length; i++) iterator(this[i]); }, clear: function() { this.length = 0; return this; }, first: function() { return this[0]; }, last: function() { return this[this.length - 1]; }, compact: function() { return this.select(function(value) { return value != null; }); }, flatten: function() { return this.inject([], function(array, value) { return array.concat(Object.isArray(value) ? value.flatten() : [value]); }); }, without: function() { var values = $A(arguments); return this.select(function(value) { return !values.include(value); }); }, reverse: function(inline) { return (inline !== false ? this : this.toArray())._reverse(); }, reduce: function() { return this.length > 1 ? this : this[0]; }, uniq: function(sorted) { return this.inject([], function(array, value, index) { if (0 == index || (sorted ? array.last() != value : !array.include(value))) array.push(value); return array; }); }, intersect: function(array) { return this.uniq().findAll(function(item) { return array.detect(function(value) { return item === value }); }); }, clone: function() { return [].concat(this); }, size: function() { return this.length; }, inspect: function() { return '[' + this.map(Object.inspect).join(', ') + ']'; }, toJSON: function() { var results = []; this.each(function(object) { var value = Object.toJSON(object); if (value !== undefined) results.push(value); }); return '[' + results.join(', ') + ']'; } }); // use native browser JS 1.6 implementation if available if (Object.isFunction(Array.prototype.forEach)) Array.prototype._each = Array.prototype.forEach; if (!Array.prototype.indexOf) Array.prototype.indexOf = function(item, i) { i || (i = 0); var length = this.length; if (i < 0) i = length + i; for (; i < length; i++) if (this[i] === item) return i; return -1; }; if (!Array.prototype.lastIndexOf) Array.prototype.lastIndexOf = function(item, i) { i = isNaN(i) ? this.length : (i < 0 ? this.length + i : i) + 1; var n = this.slice(0, i).reverse().indexOf(item); return (n < 0) ? n : i - n - 1; }; Array.prototype.toArray = Array.prototype.clone; function $w(string) { if (!Object.isString(string)) return []; string = string.strip(); return string ? string.split(/\s+/) : []; } if (Prototype.Browser.Opera){ Array.prototype.concat = function() { var array = []; for (var i = 0, length = this.length; i < length; i++) array.push(this[i]); for (var i = 0, length = arguments.length; i < length; i++) { if (Object.isArray(arguments[i])) { for (var j = 0, arrayLength = arguments[i].length; j < arrayLength; j++) array.push(arguments[i][j]); } else { array.push(arguments[i]); } } return array; }; } Object.extend(Number.prototype, { toColorPart: function() { return this.toPaddedString(2, 16); }, succ: function() { return this + 1; }, times: function(iterator) { $R(0, this, true).each(iterator); return this; }, toPaddedString: function(length, radix) { var string = this.toString(radix || 10); return '0'.times(length - string.length) + string; }, toJSON: function() { return isFinite(this) ? this.toString() : 'null'; } }); $w('abs round ceil floor').each(function(method){ Number.prototype[method] = Math[method].methodize(); }); function $H(object) { return new Hash(object); }; var Hash = Class.create(Enumerable, (function() { if (function() { var i = 0, Test = function(value) { this.key = value }; Test.prototype.key = 'foo'; for (var property in new Test('bar')) i++; return i > 1; }()) { function each(iterator) { var cache = []; for (var key in this._object) { var value = this._object[key]; if (cache.include(key)) continue; cache.push(key); var pair = [key, value]; pair.key = key; pair.value = value; iterator(pair); } } } else { function each(iterator) { for (var key in this._object) { var value = this._object[key], pair = [key, value]; pair.key = key; pair.value = value; iterator(pair); } } } function toQueryPair(key, value) { if (Object.isUndefined(value)) return key; return key + '=' + encodeURIComponent(String.interpret(value)); } return { initialize: function(object) { this._object = Object.isHash(object) ? object.toObject() : Object.clone(object); }, _each: each, set: function(key, value) { return this._object[key] = value; }, get: function(key) { return this._object[key]; }, unset: function(key) { var value = this._object[key]; delete this._object[key]; return value; }, toObject: function() { return Object.clone(this._object); }, keys: function() { return this.pluck('key'); }, values: function() { return this.pluck('value'); }, index: function(value) { var match = this.detect(function(pair) { return pair.value === value; }); return match && match.key; }, merge: function(object) { return this.clone().update(object); }, update: function(object) { return new Hash(object).inject(this, function(result, pair) { result.set(pair.key, pair.value); return result; }); }, toQueryString: function() { return this.map(function(pair) { var key = encodeURIComponent(pair.key), values = pair.value; if (values && typeof values == 'object') { if (Object.isArray(values)) return values.map(toQueryPair.curry(key)).join('&'); } return toQueryPair(key, values); }).join('&'); }, inspect: function() { return '#'; }, toJSON: function() { return Object.toJSON(this.toObject()); }, clone: function() { return new Hash(this); } } })()); Hash.prototype.toTemplateReplacements = Hash.prototype.toObject; Hash.from = $H; var ObjectRange = Class.create(Enumerable, { initialize: function(start, end, exclusive) { this.start = start; this.end = end; this.exclusive = exclusive; }, _each: function(iterator) { var value = this.start; while (this.include(value)) { iterator(value); value = value.succ(); } }, include: function(value) { if (value < this.start) return false; if (this.exclusive) return value < this.end; return value <= this.end; } }); var $R = function(start, end, exclusive) { return new ObjectRange(start, end, exclusive); }; var Ajax = { getTransport: function() { return Try.these( function() {return new XMLHttpRequest()}, function() {return new ActiveXObject('Msxml2.XMLHTTP')}, function() {return new ActiveXObject('Microsoft.XMLHTTP')} ) || false; }, activeRequestCount: 0 }; Ajax.Responders = { responders: [], _each: function(iterator) { this.responders._each(iterator); }, register: function(responder) { if (!this.include(responder)) this.responders.push(responder); }, unregister: function(responder) { this.responders = this.responders.without(responder); }, dispatch: function(callback, request, transport, json) { this.each(function(responder) { if (Object.isFunction(responder[callback])) { try { responder[callback].apply(responder, [request, transport, json]); } catch (e) { } } }); } }; Object.extend(Ajax.Responders, Enumerable); Ajax.Responders.register({ onCreate: function() { Ajax.activeRequestCount++ }, onComplete: function() { Ajax.activeRequestCount-- } }); Ajax.Base = Class.create({ initialize: function(options) { this.options = { method: 'post', asynchronous: true, contentType: 'application/x-www-form-urlencoded', encoding: 'UTF-8', parameters: '', evalJSON: true, evalJS: true }; Object.extend(this.options, options || { }); this.options.method = this.options.method.toLowerCase(); if (Object.isString(this.options.parameters)) this.options.parameters = this.options.parameters.toQueryParams(); } }); Ajax.Request = Class.create(Ajax.Base, { _complete: false, initialize: function($super, url, options) { $super(options); this.transport = Ajax.getTransport(); this.request(url); }, request: function(url) { this.url = url; this.method = this.options.method; var params = Object.clone(this.options.parameters); if (!['get', 'post'].include(this.method)) { // simulate other verbs over post params['_method'] = this.method; this.method = 'post'; } this.parameters = params; if (params = Object.toQueryString(params)) { // when GET, append parameters to URL if (this.method == 'get') this.url += (this.url.include('?') ? '&' : '?') + params; else if (/Konqueror|Safari|KHTML/.test(navigator.userAgent)) params += '&_='; } try { var response = new Ajax.Response(this); if (this.options.onCreate) this.options.onCreate(response); Ajax.Responders.dispatch('onCreate', this, response); this.transport.open(this.method.toUpperCase(), this.url, this.options.asynchronous); if (this.options.asynchronous) this.respondToReadyState.bind(this).defer(1); this.transport.onreadystatechange = this.onStateChange.bind(this); this.setRequestHeaders(); this.body = this.method == 'post' ? (this.options.postBody || params) : null; this.transport.send(this.body); /* Force Firefox to handle ready state 4 for synchronous requests */ if (!this.options.asynchronous && this.transport.overrideMimeType) this.onStateChange(); } catch (e) { this.dispatchException(e); } }, onStateChange: function() { var readyState = this.transport.readyState; if (readyState > 1 && !((readyState == 4) && this._complete)) this.respondToReadyState(this.transport.readyState); }, setRequestHeaders: function() { var headers = { 'X-Requested-With': 'XMLHttpRequest', 'X-Prototype-Version': Prototype.Version, 'Accept': 'text/javascript, text/html, application/xml, text/xml, */*' }; if (this.method == 'post') { headers['Content-type'] = this.options.contentType + (this.options.encoding ? '; charset=' + this.options.encoding : ''); /* Force "Connection: close" for older Mozilla browsers to work * around a bug where XMLHttpRequest sends an incorrect * Content-length header. See Mozilla Bugzilla #246651. */ if (this.transport.overrideMimeType && (navigator.userAgent.match(/Gecko\/(\d{4})/) || [0,2005])[1] < 2005) headers['Connection'] = 'close'; } // user-defined headers if (typeof this.options.requestHeaders == 'object') { var extras = this.options.requestHeaders; if (Object.isFunction(extras.push)) for (var i = 0, length = extras.length; i < length; i += 2) headers[extras[i]] = extras[i+1]; else $H(extras).each(function(pair) { headers[pair.key] = pair.value }); } for (var name in headers) this.transport.setRequestHeader(name, headers[name]); }, success: function() { var status = this.getStatus(); return !status || (status >= 200 && status < 300); }, getStatus: function() { try { return this.transport.status || 0; } catch (e) { return 0 } }, respondToReadyState: function(readyState) { var state = Ajax.Request.Events[readyState], response = new Ajax.Response(this); if (state == 'Complete') { try { this._complete = true; (this.options['on' + response.status] || this.options['on' + (this.success() ? 'Success' : 'Failure')] || Prototype.emptyFunction)(response, response.headerJSON); } catch (e) { this.dispatchException(e); } var contentType = response.getHeader('Content-type'); if (this.options.evalJS == 'force' || (this.options.evalJS && contentType && contentType.match(/^\s*(text|application)\/(x-)?(java|ecma)script(;.*)?\s*$/i))) this.evalResponse(); } try { (this.options['on' + state] || Prototype.emptyFunction)(response, response.headerJSON); Ajax.Responders.dispatch('on' + state, this, response, response.headerJSON); } catch (e) { this.dispatchException(e); } if (state == 'Complete') { // avoid memory leak in MSIE: clean up this.transport.onreadystatechange = Prototype.emptyFunction; } }, getHeader: function(name) { try { return this.transport.getResponseHeader(name); } catch (e) { return null } }, evalResponse: function() { try { return eval((this.transport.responseText || '').unfilterJSON()); } catch (e) { this.dispatchException(e); } }, dispatchException: function(exception) { (this.options.onException || Prototype.emptyFunction)(this, exception); Ajax.Responders.dispatch('onException', this, exception); } }); Ajax.Request.Events = ['Uninitialized', 'Loading', 'Loaded', 'Interactive', 'Complete']; Ajax.Response = Class.create({ initialize: function(request){ this.request = request; var transport = this.transport = request.transport, readyState = this.readyState = transport.readyState; if((readyState > 2 && !Prototype.Browser.IE) || readyState == 4) { this.status = this.getStatus(); this.statusText = this.getStatusText(); this.responseText = String.interpret(transport.responseText); this.headerJSON = this._getHeaderJSON(); } if(readyState == 4) { var xml = transport.responseXML; this.responseXML = xml === undefined ? null : xml; this.responseJSON = this._getResponseJSON(); } }, status: 0, statusText: '', getStatus: Ajax.Request.prototype.getStatus, getStatusText: function() { try { return this.transport.statusText || ''; } catch (e) { return '' } }, getHeader: Ajax.Request.prototype.getHeader, getAllHeaders: function() { try { return this.getAllResponseHeaders(); } catch (e) { return null } }, getResponseHeader: function(name) { return this.transport.getResponseHeader(name); }, getAllResponseHeaders: function() { return this.transport.getAllResponseHeaders(); }, _getHeaderJSON: function() { var json = this.getHeader('X-JSON'); if (!json) return null; json = decodeURIComponent(escape(json)); try { return json.evalJSON(this.request.options.sanitizeJSON); } catch (e) { this.request.dispatchException(e); } }, _getResponseJSON: function() { var options = this.request.options; if (!options.evalJSON || (options.evalJSON != 'force' && !(this.getHeader('Content-type') || '').include('application/json'))) return null; try { return this.transport.responseText.evalJSON(options.sanitizeJSON); } catch (e) { this.request.dispatchException(e); } } }); Ajax.Updater = Class.create(Ajax.Request, { initialize: function($super, container, url, options) { this.container = { success: (container.success || container), failure: (container.failure || (container.success ? null : container)) }; options = options || { }; var onComplete = options.onComplete; options.onComplete = (function(response, param) { this.updateContent(response.responseText); if (Object.isFunction(onComplete)) onComplete(response, param); }).bind(this); $super(url, options); }, updateContent: function(responseText) { var receiver = this.container[this.success() ? 'success' : 'failure'], options = this.options; if (!options.evalScripts) responseText = responseText.stripScripts(); if (receiver = $(receiver)) { if (options.insertion) { if (Object.isString(options.insertion)) { var insertion = { }; insertion[options.insertion] = responseText; receiver.insert(insertion); } else options.insertion(receiver, responseText); } else receiver.update(responseText); } if (this.success()) { if (this.onComplete) this.onComplete.bind(this).defer(); } } }); Ajax.PeriodicalUpdater = Class.create(Ajax.Base, { initialize: function($super, container, url, options) { $super(options); this.onComplete = this.options.onComplete; this.frequency = (this.options.frequency || 2); this.decay = (this.options.decay || 1); this.updater = { }; this.container = container; this.url = url; this.start(); }, start: function() { this.options.onComplete = this.updateComplete.bind(this); this.onTimerEvent(); }, stop: function() { this.updater.options.onComplete = undefined; clearTimeout(this.timer); (this.onComplete || Prototype.emptyFunction).apply(this, arguments); }, updateComplete: function(response) { if (this.options.decay) { this.decay = (response.responseText == this.lastText ? this.decay * this.options.decay : 1); this.lastText = response.responseText; } this.timer = this.onTimerEvent.bind(this).delay(this.decay * this.frequency); }, onTimerEvent: function() { this.updater = new Ajax.Updater(this.container, this.url, this.options); } }); function $(element) { if (arguments.length > 1) { for (var i = 0, elements = [], length = arguments.length; i < length; i++) elements.push($(arguments[i])); return elements; } if (Object.isString(element)) element = document.getElementById(element); return Element.extend(element); } if (Prototype.BrowserFeatures.XPath) { document._getElementsByXPath = function(expression, parentElement) { var results = []; var query = document.evaluate(expression, $(parentElement) || document, null, XPathResult.ORDERED_NODE_SNAPSHOT_TYPE, null); for (var i = 0, length = query.snapshotLength; i < length; i++) results.push(Element.extend(query.snapshotItem(i))); return results; }; } /*--------------------------------------------------------------------------*/ if (!window.Node) var Node = { }; if (!Node.ELEMENT_NODE) { // DOM level 2 ECMAScript Language Binding Object.extend(Node, { ELEMENT_NODE: 1, ATTRIBUTE_NODE: 2, TEXT_NODE: 3, CDATA_SECTION_NODE: 4, ENTITY_REFERENCE_NODE: 5, ENTITY_NODE: 6, PROCESSING_INSTRUCTION_NODE: 7, COMMENT_NODE: 8, DOCUMENT_NODE: 9, DOCUMENT_TYPE_NODE: 10, DOCUMENT_FRAGMENT_NODE: 11, NOTATION_NODE: 12 }); } (function() { var element = this.Element; this.Element = function(tagName, attributes) { attributes = attributes || { }; tagName = tagName.toLowerCase(); var cache = Element.cache; if (Prototype.Browser.IE && attributes.name) { tagName = '<' + tagName + ' name="' + attributes.name + '">'; delete attributes.name; return Element.writeAttribute(document.createElement(tagName), attributes); } if (!cache[tagName]) cache[tagName] = Element.extend(document.createElement(tagName)); return Element.writeAttribute(cache[tagName].cloneNode(false), attributes); }; Object.extend(this.Element, element || { }); }).call(window); Element.cache = { }; Element.Methods = { visible: function(element) { return $(element).style.display != 'none'; }, toggle: function(element) { element = $(element); Element[Element.visible(element) ? 'hide' : 'show'](element); return element; }, hide: function(element) { $(element).style.display = 'none'; return element; }, show: function(element) { $(element).style.display = ''; return element; }, remove: function(element) { element = $(element); element.parentNode.removeChild(element); return element; }, update: function(element, content) { element = $(element); if (content && content.toElement) content = content.toElement(); if (Object.isElement(content)) return element.update().insert(content); content = Object.toHTML(content); element.innerHTML = content.stripScripts(); content.evalScripts.bind(content).defer(); return element; }, replace: function(element, content) { element = $(element); if (content && content.toElement) content = content.toElement(); else if (!Object.isElement(content)) { content = Object.toHTML(content); var range = element.ownerDocument.createRange(); range.selectNode(element); content.evalScripts.bind(content).defer(); content = range.createContextualFragment(content.stripScripts()); } element.parentNode.replaceChild(content, element); return element; }, insert: function(element, insertions) { element = $(element); if (Object.isString(insertions) || Object.isNumber(insertions) || Object.isElement(insertions) || (insertions && (insertions.toElement || insertions.toHTML))) insertions = {bottom:insertions}; var content, t, range; for (position in insertions) { content = insertions[position]; position = position.toLowerCase(); t = Element._insertionTranslations[position]; if (content && content.toElement) content = content.toElement(); if (Object.isElement(content)) { t.insert(element, content); continue; } content = Object.toHTML(content); range = element.ownerDocument.createRange(); t.initializeRange(element, range); t.insert(element, range.createContextualFragment(content.stripScripts())); content.evalScripts.bind(content).defer(); } return element; }, wrap: function(element, wrapper, attributes) { element = $(element); if (Object.isElement(wrapper)) $(wrapper).writeAttribute(attributes || { }); else if (Object.isString(wrapper)) wrapper = new Element(wrapper, attributes); else wrapper = new Element('div', wrapper); if (element.parentNode) element.parentNode.replaceChild(wrapper, element); wrapper.appendChild(element); return wrapper; }, inspect: function(element) { element = $(element); var result = '<' + element.tagName.toLowerCase(); $H({'id': 'id', 'className': 'class'}).each(function(pair) { var property = pair.first(), attribute = pair.last(); var value = (element[property] || '').toString(); if (value) result += ' ' + attribute + '=' + value.inspect(true); }); return result + '>'; }, recursivelyCollect: function(element, property) { element = $(element); var elements = []; while (element = element[property]) if (element.nodeType == 1) elements.push(Element.extend(element)); return elements; }, ancestors: function(element) { return $(element).recursivelyCollect('parentNode'); }, descendants: function(element) { return $A($(element).getElementsByTagName('*')).each(Element.extend); }, firstDescendant: function(element) { element = $(element).firstChild; while (element && element.nodeType != 1) element = element.nextSibling; return $(element); }, immediateDescendants: function(element) { if (!(element = $(element).firstChild)) return []; while (element && element.nodeType != 1) element = element.nextSibling; if (element) return [element].concat($(element).nextSiblings()); return []; }, previousSiblings: function(element) { return $(element).recursivelyCollect('previousSibling'); }, nextSiblings: function(element) { return $(element).recursivelyCollect('nextSibling'); }, siblings: function(element) { element = $(element); return element.previousSiblings().reverse().concat(element.nextSiblings()); }, match: function(element, selector) { if (Object.isString(selector)) selector = new Selector(selector); return selector.match($(element)); }, up: function(element, expression, index) { element = $(element); if (arguments.length == 1) return $(element.parentNode); var ancestors = element.ancestors(); return expression ? Selector.findElement(ancestors, expression, index) : ancestors[index || 0]; }, down: function(element, expression, index) { element = $(element); if (arguments.length == 1) return element.firstDescendant(); var descendants = element.descendants(); return expression ? Selector.findElement(descendants, expression, index) : descendants[index || 0]; }, previous: function(element, expression, index) { element = $(element); if (arguments.length == 1) return $(Selector.handlers.previousElementSibling(element)); var previousSiblings = element.previousSiblings(); return expression ? Selector.findElement(previousSiblings, expression, index) : previousSiblings[index || 0]; }, next: function(element, expression, index) { element = $(element); if (arguments.length == 1) return $(Selector.handlers.nextElementSibling(element)); var nextSiblings = element.nextSiblings(); return expression ? Selector.findElement(nextSiblings, expression, index) : nextSiblings[index || 0]; }, select: function() { var args = $A(arguments), element = $(args.shift()); return Selector.findChildElements(element, args); }, adjacent: function() { var args = $A(arguments), element = $(args.shift()); return Selector.findChildElements(element.parentNode, args).without(element); }, identify: function(element) { element = $(element); var id = element.readAttribute('id'), self = arguments.callee; if (id) return id; do { id = 'anonymous_element_' + self.counter++ } while ($(id)); element.writeAttribute('id', id); return id; }, readAttribute: function(element, name) { element = $(element); if (Prototype.Browser.IE) { var t = Element._attributeTranslations.read; if (t.values[name]) return t.values[name](element, name); if (t.names[name]) name = t.names[name]; if (name.include(':')) { return (!element.attributes || !element.attributes[name]) ? null : element.attributes[name].value; } } return element.getAttribute(name); }, writeAttribute: function(element, name, value) { element = $(element); var attributes = { }, t = Element._attributeTranslations.write; if (typeof name == 'object') attributes = name; else attributes[name] = value === undefined ? true : value; for (var attr in attributes) { var name = t.names[attr] || attr, value = attributes[attr]; if (t.values[attr]) name = t.values[attr](element, value); if (value === false || value === null) element.removeAttribute(name); else if (value === true) element.setAttribute(name, name); else element.setAttribute(name, value); } return element; }, getHeight: function(element) { return $(element).getDimensions().height; }, getWidth: function(element) { return $(element).getDimensions().width; }, classNames: function(element) { return new Element.ClassNames(element); }, hasClassName: function(element, className) { if (!(element = $(element))) return; var elementClassName = element.className; return (elementClassName.length > 0 && (elementClassName == className || new RegExp("(^|\\s)" + className + "(\\s|$)").test(elementClassName))); }, addClassName: function(element, className) { if (!(element = $(element))) return; if (!element.hasClassName(className)) element.className += (element.className ? ' ' : '') + className; return element; }, removeClassName: function(element, className) { if (!(element = $(element))) return; element.className = element.className.replace( new RegExp("(^|\\s+)" + className + "(\\s+|$)"), ' ').strip(); return element; }, toggleClassName: function(element, className) { if (!(element = $(element))) return; return element[element.hasClassName(className) ? 'removeClassName' : 'addClassName'](className); }, // removes whitespace-only text node children cleanWhitespace: function(element) { element = $(element); var node = element.firstChild; while (node) { var nextNode = node.nextSibling; if (node.nodeType == 3 && !/\S/.test(node.nodeValue)) element.removeChild(node); node = nextNode; } return element; }, empty: function(element) { return $(element).innerHTML.blank(); }, descendantOf: function(element, ancestor) { element = $(element), ancestor = $(ancestor); if (element.compareDocumentPosition) return (element.compareDocumentPosition(ancestor) & 8) === 8; if (element.sourceIndex && !Prototype.Browser.Opera) { var e = element.sourceIndex, a = ancestor.sourceIndex, nextAncestor = ancestor.nextSibling; if (!nextAncestor) { do { ancestor = ancestor.parentNode; } while (!(nextAncestor = ancestor.nextSibling) && ancestor.parentNode); } if (nextAncestor) return (e > a && e < nextAncestor.sourceIndex); } while (element = element.parentNode) if (element == ancestor) return true; return false; }, scrollTo: function(element) { element = $(element); var pos = element.cumulativeOffset(); window.scrollTo(pos[0], pos[1]); return element; }, getStyle: function(element, style) { element = $(element); style = style == 'float' ? 'cssFloat' : style.camelize(); var value = element.style[style]; if (!value) { var css = document.defaultView.getComputedStyle(element, null); value = css ? css[style] : null; } if (style == 'opacity') return value ? parseFloat(value) : 1.0; return value == 'auto' ? null : value; }, getOpacity: function(element) { return $(element).getStyle('opacity'); }, setStyle: function(element, styles) { element = $(element); var elementStyle = element.style, match; if (Object.isString(styles)) { element.style.cssText += ';' + styles; return styles.include('opacity') ? element.setOpacity(styles.match(/opacity:\s*(\d?\.?\d*)/)[1]) : element; } for (var property in styles) if (property == 'opacity') element.setOpacity(styles[property]); else elementStyle[(property == 'float' || property == 'cssFloat') ? (elementStyle.styleFloat === undefined ? 'cssFloat' : 'styleFloat') : property] = styles[property]; return element; }, setOpacity: function(element, value) { element = $(element); element.style.opacity = (value == 1 || value === '') ? '' : (value < 0.00001) ? 0 : value; return element; }, getDimensions: function(element) { element = $(element); var display = $(element).getStyle('display'); if (display != 'none' && display != null) // Safari bug return {width: element.offsetWidth, height: element.offsetHeight}; // All *Width and *Height properties give 0 on elements with display none, // so enable the element temporarily var els = element.style; var originalVisibility = els.visibility; var originalPosition = els.position; var originalDisplay = els.display; els.visibility = 'hidden'; els.position = 'absolute'; els.display = 'block'; var originalWidth = element.clientWidth; var originalHeight = element.clientHeight; els.display = originalDisplay; els.position = originalPosition; els.visibility = originalVisibility; return {width: originalWidth, height: originalHeight}; }, makePositioned: function(element) { element = $(element); var pos = Element.getStyle(element, 'position'); if (pos == 'static' || !pos) { element._madePositioned = true; element.style.position = 'relative'; // Opera returns the offset relative to the positioning context, when an // element is position relative but top and left have not been defined if (window.opera) { element.style.top = 0; element.style.left = 0; } } return element; }, undoPositioned: function(element) { element = $(element); if (element._madePositioned) { element._madePositioned = undefined; element.style.position = element.style.top = element.style.left = element.style.bottom = element.style.right = ''; } return element; }, makeClipping: function(element) { element = $(element); if (element._overflow) return element; element._overflow = Element.getStyle(element, 'overflow') || 'auto'; if (element._overflow !== 'hidden') element.style.overflow = 'hidden'; return element; }, undoClipping: function(element) { element = $(element); if (!element._overflow) return element; element.style.overflow = element._overflow == 'auto' ? '' : element._overflow; element._overflow = null; return element; }, cumulativeOffset: function(element) { var valueT = 0, valueL = 0; do { valueT += element.offsetTop || 0; valueL += element.offsetLeft || 0; element = element.offsetParent; } while (element); return Element._returnOffset(valueL, valueT); }, positionedOffset: function(element) { var valueT = 0, valueL = 0; do { valueT += element.offsetTop || 0; valueL += element.offsetLeft || 0; element = element.offsetParent; if (element) { if (element.tagName == 'BODY') break; var p = Element.getStyle(element, 'position'); if (p == 'relative' || p == 'absolute') break; } } while (element); return Element._returnOffset(valueL, valueT); }, absolutize: function(element) { element = $(element); if (element.getStyle('position') == 'absolute') return; // Position.prepare(); // To be done manually by Scripty when it needs it. var offsets = element.positionedOffset(); var top = offsets[1]; var left = offsets[0]; var width = element.clientWidth; var height = element.clientHeight; element._originalLeft = left - parseFloat(element.style.left || 0); element._originalTop = top - parseFloat(element.style.top || 0); element._originalWidth = element.style.width; element._originalHeight = element.style.height; element.style.position = 'absolute'; element.style.top = top + 'px'; element.style.left = left + 'px'; element.style.width = width + 'px'; element.style.height = height + 'px'; return element; }, relativize: function(element) { element = $(element); if (element.getStyle('position') == 'relative') return; // Position.prepare(); // To be done manually by Scripty when it needs it. element.style.position = 'relative'; var top = parseFloat(element.style.top || 0) - (element._originalTop || 0); var left = parseFloat(element.style.left || 0) - (element._originalLeft || 0); element.style.top = top + 'px'; element.style.left = left + 'px'; element.style.height = element._originalHeight; element.style.width = element._originalWidth; return element; }, cumulativeScrollOffset: function(element) { var valueT = 0, valueL = 0; do { valueT += element.scrollTop || 0; valueL += element.scrollLeft || 0; element = element.parentNode; } while (element); return Element._returnOffset(valueL, valueT); }, getOffsetParent: function(element) { if (element.offsetParent) return $(element.offsetParent); if (element == document.body) return $(element); while ((element = element.parentNode) && element != document.body) if (Element.getStyle(element, 'position') != 'static') return $(element); return $(document.body); }, viewportOffset: function(forElement) { var valueT = 0, valueL = 0; var element = forElement; do { valueT += element.offsetTop || 0; valueL += element.offsetLeft || 0; // Safari fix if (element.offsetParent == document.body && Element.getStyle(element, 'position') == 'absolute') break; } while (element = element.offsetParent); element = forElement; do { if (!Prototype.Browser.Opera || element.tagName == 'BODY') { valueT -= element.scrollTop || 0; valueL -= element.scrollLeft || 0; } } while (element = element.parentNode); return Element._returnOffset(valueL, valueT); }, clonePosition: function(element, source) { var options = Object.extend({ setLeft: true, setTop: true, setWidth: true, setHeight: true, offsetTop: 0, offsetLeft: 0 }, arguments[2] || { }); // find page position of source source = $(source); var p = source.viewportOffset(); // find coordinate system to use element = $(element); var delta = [0, 0]; var parent = null; // delta [0,0] will do fine with position: fixed elements, // position:absolute needs offsetParent deltas if (Element.getStyle(element, 'position') == 'absolute') { parent = element.getOffsetParent(); delta = parent.viewportOffset(); } // correct by body offsets (fixes Safari) if (parent == document.body) { delta[0] -= document.body.offsetLeft; delta[1] -= document.body.offsetTop; } // set position if (options.setLeft) element.style.left = (p[0] - delta[0] + options.offsetLeft) + 'px'; if (options.setTop) element.style.top = (p[1] - delta[1] + options.offsetTop) + 'px'; if (options.setWidth) element.style.width = source.offsetWidth + 'px'; if (options.setHeight) element.style.height = source.offsetHeight + 'px'; return element; } }; Element.Methods.identify.counter = 1; Object.extend(Element.Methods, { getElementsBySelector: Element.Methods.select, childElements: Element.Methods.immediateDescendants }); Element._attributeTranslations = { write: { names: { className: 'class', htmlFor: 'for' }, values: { } } }; if (!document.createRange || Prototype.Browser.Opera) { Element.Methods.insert = function(element, insertions) { element = $(element); if (Object.isString(insertions) || Object.isNumber(insertions) || Object.isElement(insertions) || (insertions && (insertions.toElement || insertions.toHTML))) insertions = { bottom: insertions }; var t = Element._insertionTranslations, content, position, pos, tagName; for (position in insertions) { content = insertions[position]; position = position.toLowerCase(); pos = t[position]; if (content && content.toElement) content = content.toElement(); if (Object.isElement(content)) { pos.insert(element, content); continue; } content = Object.toHTML(content); tagName = ((position == 'before' || position == 'after') ? element.parentNode : element).tagName.toUpperCase(); if (t.tags[tagName]) { var fragments = Element._getContentFromAnonymousElement(tagName, content.stripScripts()); if (position == 'top' || position == 'after') fragments.reverse(); fragments.each(pos.insert.curry(element)); } else element.insertAdjacentHTML(pos.adjacency, content.stripScripts()); content.evalScripts.bind(content).defer(); } return element; }; } if (Prototype.Browser.Opera) { Element.Methods._getStyle = Element.Methods.getStyle; Element.Methods.getStyle = function(element, style) { switch(style) { case 'left': case 'top': case 'right': case 'bottom': if (Element._getStyle(element, 'position') == 'static') return null; default: return Element._getStyle(element, style); } }; Element.Methods._readAttribute = Element.Methods.readAttribute; Element.Methods.readAttribute = function(element, attribute) { if (attribute == 'title') return element.title; return Element._readAttribute(element, attribute); }; } else if (Prototype.Browser.IE) { $w('positionedOffset getOffsetParent viewportOffset').each(function(method) { Element.Methods[method] = Element.Methods[method].wrap( function(proceed, element) { element = $(element); var position = element.getStyle('position'); if (position != 'static') return proceed(element); element.setStyle({ position: 'relative' }); var value = proceed(element); element.setStyle({ position: position }); return value; } ); }); Element.Methods.getStyle = function(element, style) { element = $(element); style = (style == 'float' || style == 'cssFloat') ? 'styleFloat' : style.camelize(); var value = element.style[style]; if (!value && element.currentStyle) value = element.currentStyle[style]; if (style == 'opacity') { if (value = (element.getStyle('filter') || '').match(/alpha\(opacity=(.*)\)/)) if (value[1]) return parseFloat(value[1]) / 100; return 1.0; } if (value == 'auto') { if ((style == 'width' || style == 'height') && (element.getStyle('display') != 'none')) return element['offset' + style.capitalize()] + 'px'; return null; } return value; }; Element.Methods.setOpacity = function(element, value) { function stripAlpha(filter){ return filter.replace(/alpha\([^\)]*\)/gi,''); } element = $(element); var currentStyle = element.currentStyle; if ((currentStyle && !currentStyle.hasLayout) || (!currentStyle && element.style.zoom == 'normal')) element.style.zoom = 1; var filter = element.getStyle('filter'), style = element.style; if (value == 1 || value === '') { (filter = stripAlpha(filter)) ? style.filter = filter : style.removeAttribute('filter'); return element; } else if (value < 0.00001) value = 0; style.filter = stripAlpha(filter) + 'alpha(opacity=' + (value * 100) + ')'; return element; }; Element._attributeTranslations = { read: { names: { 'class': 'className', 'for': 'htmlFor' }, values: { _getAttr: function(element, attribute) { return element.getAttribute(attribute, 2); }, _getAttrNode: function(element, attribute) { var node = element.getAttributeNode(attribute); return node ? node.value : ""; }, _getEv: function(element, attribute) { var attribute = element.getAttribute(attribute); return attribute ? attribute.toString().slice(23, -2) : null; }, _flag: function(element, attribute) { return $(element).hasAttribute(attribute) ? attribute : null; }, style: function(element) { return element.style.cssText.toLowerCase(); }, title: function(element) { return element.title; } } } }; Element._attributeTranslations.write = { names: Object.clone(Element._attributeTranslations.read.names), values: { checked: function(element, value) { element.checked = !!value; }, style: function(element, value) { element.style.cssText = value ? value : ''; } } }; Element._attributeTranslations.has = {}; $w('colSpan rowSpan vAlign dateTime accessKey tabIndex ' + 'encType maxLength readOnly longDesc').each(function(attr) { Element._attributeTranslations.write.names[attr.toLowerCase()] = attr; Element._attributeTranslations.has[attr.toLowerCase()] = attr; }); (function(v) { Object.extend(v, { href: v._getAttr, src: v._getAttr, type: v._getAttr, action: v._getAttrNode, disabled: v._flag, checked: v._flag, readonly: v._flag, multiple: v._flag, onload: v._getEv, onunload: v._getEv, onclick: v._getEv, ondblclick: v._getEv, onmousedown: v._getEv, onmouseup: v._getEv, onmouseover: v._getEv, onmousemove: v._getEv, onmouseout: v._getEv, onfocus: v._getEv, onblur: v._getEv, onkeypress: v._getEv, onkeydown: v._getEv, onkeyup: v._getEv, onsubmit: v._getEv, onreset: v._getEv, onselect: v._getEv, onchange: v._getEv }); })(Element._attributeTranslations.read.values); } else if (Prototype.Browser.Gecko && /rv:1\.8\.0/.test(navigator.userAgent)) { Element.Methods.setOpacity = function(element, value) { element = $(element); element.style.opacity = (value == 1) ? 0.999999 : (value === '') ? '' : (value < 0.00001) ? 0 : value; return element; }; } else if (Prototype.Browser.WebKit) { Element.Methods.setOpacity = function(element, value) { element = $(element); element.style.opacity = (value == 1 || value === '') ? '' : (value < 0.00001) ? 0 : value; if (value == 1) if(element.tagName == 'IMG' && element.width) { element.width++; element.width--; } else try { var n = document.createTextNode(' '); element.appendChild(n); element.removeChild(n); } catch (e) { } return element; }; // Safari returns margins on body which is incorrect if the child is absolutely // positioned. For performance reasons, redefine Position.cumulativeOffset for // KHTML/WebKit only. Element.Methods.cumulativeOffset = function(element) { var valueT = 0, valueL = 0; do { valueT += element.offsetTop || 0; valueL += element.offsetLeft || 0; if (element.offsetParent == document.body) if (Element.getStyle(element, 'position') == 'absolute') break; element = element.offsetParent; } while (element); return Element._returnOffset(valueL, valueT); }; } if (Prototype.Browser.IE || Prototype.Browser.Opera) { // IE and Opera are missing .innerHTML support for TABLE-related and SELECT elements Element.Methods.update = function(element, content) { element = $(element); if (content && content.toElement) content = content.toElement(); if (Object.isElement(content)) return element.update().insert(content); content = Object.toHTML(content); var tagName = element.tagName.toUpperCase(); if (tagName in Element._insertionTranslations.tags) { $A(element.childNodes).each(function(node) { element.removeChild(node) }); Element._getContentFromAnonymousElement(tagName, content.stripScripts()) .each(function(node) { element.appendChild(node) }); } else element.innerHTML = content.stripScripts(); content.evalScripts.bind(content).defer(); return element; }; } if (document.createElement('div').outerHTML) { Element.Methods.replace = function(element, content) { element = $(element); if (content && content.toElement) content = content.toElement(); if (Object.isElement(content)) { element.parentNode.replaceChild(content, element); return element; } content = Object.toHTML(content); var parent = element.parentNode, tagName = parent.tagName.toUpperCase(); if (Element._insertionTranslations.tags[tagName]) { var nextSibling = element.next(); var fragments = Element._getContentFromAnonymousElement(tagName, content.stripScripts()); parent.removeChild(element); if (nextSibling) fragments.each(function(node) { parent.insertBefore(node, nextSibling) }); else fragments.each(function(node) { parent.appendChild(node) }); } else element.outerHTML = content.stripScripts(); content.evalScripts.bind(content).defer(); return element; }; } Element._returnOffset = function(l, t) { var result = [l, t]; result.left = l; result.top = t; return result; }; Element._getContentFromAnonymousElement = function(tagName, html) { var div = new Element('div'), t = Element._insertionTranslations.tags[tagName]; div.innerHTML = t[0] + html + t[1]; t[2].times(function() { div = div.firstChild }); return $A(div.childNodes); }; Element._insertionTranslations = { before: { adjacency: 'beforeBegin', insert: function(element, node) { element.parentNode.insertBefore(node, element); }, initializeRange: function(element, range) { range.setStartBefore(element); } }, top: { adjacency: 'afterBegin', insert: function(element, node) { element.insertBefore(node, element.firstChild); }, initializeRange: function(element, range) { range.selectNodeContents(element); range.collapse(true); } }, bottom: { adjacency: 'beforeEnd', insert: function(element, node) { element.appendChild(node); } }, after: { adjacency: 'afterEnd', insert: function(element, node) { element.parentNode.insertBefore(node, element.nextSibling); }, initializeRange: function(element, range) { range.setStartAfter(element); } }, tags: { TABLE: ['', '
', 1], TBODY: ['', '
', 2], TR: ['', '
', 3], TD: ['
', '
', 4], SELECT: ['', 1] } }; (function() { this.bottom.initializeRange = this.top.initializeRange; Object.extend(this.tags, { THEAD: this.tags.TBODY, TFOOT: this.tags.TBODY, TH: this.tags.TD }); }).call(Element._insertionTranslations); Element.Methods.Simulated = { hasAttribute: function(element, attribute) { attribute = Element._attributeTranslations.has[attribute] || attribute; var node = $(element).getAttributeNode(attribute); return node && node.specified; } }; Element.Methods.ByTag = { }; Object.extend(Element, Element.Methods); if (!Prototype.BrowserFeatures.ElementExtensions && document.createElement('div').__proto__) { window.HTMLElement = { }; window.HTMLElement.prototype = document.createElement('div').__proto__; Prototype.BrowserFeatures.ElementExtensions = true; } Element.extend = (function() { if (Prototype.BrowserFeatures.SpecificElementExtensions) return Prototype.K; var Methods = { }, ByTag = Element.Methods.ByTag; var extend = Object.extend(function(element) { if (!element || element._extendedByPrototype || element.nodeType != 1 || element == window) return element; var methods = Object.clone(Methods), tagName = element.tagName, property, value; // extend methods for specific tags if (ByTag[tagName]) Object.extend(methods, ByTag[tagName]); for (property in methods) { value = methods[property]; if (Object.isFunction(value) && !(property in element)) element[property] = value.methodize(); } element._extendedByPrototype = Prototype.emptyFunction; return element; }, { refresh: function() { // extend methods for all tags (Safari doesn't need this) if (!Prototype.BrowserFeatures.ElementExtensions) { Object.extend(Methods, Element.Methods); Object.extend(Methods, Element.Methods.Simulated); } } }); extend.refresh(); return extend; })(); Element.hasAttribute = function(element, attribute) { if (element.hasAttribute) return element.hasAttribute(attribute); return Element.Methods.Simulated.hasAttribute(element, attribute); }; Element.addMethods = function(methods) { var F = Prototype.BrowserFeatures, T = Element.Methods.ByTag; if (!methods) { Object.extend(Form, Form.Methods); Object.extend(Form.Element, Form.Element.Methods); Object.extend(Element.Methods.ByTag, { "FORM": Object.clone(Form.Methods), "INPUT": Object.clone(Form.Element.Methods), "SELECT": Object.clone(Form.Element.Methods), "TEXTAREA": Object.clone(Form.Element.Methods) }); } if (arguments.length == 2) { var tagName = methods; methods = arguments[1]; } if (!tagName) Object.extend(Element.Methods, methods || { }); else { if (Object.isArray(tagName)) tagName.each(extend); else extend(tagName); } function extend(tagName) { tagName = tagName.toUpperCase(); if (!Element.Methods.ByTag[tagName]) Element.Methods.ByTag[tagName] = { }; Object.extend(Element.Methods.ByTag[tagName], methods); } function copy(methods, destination, onlyIfAbsent) { onlyIfAbsent = onlyIfAbsent || false; for (var property in methods) { var value = methods[property]; if (!Object.isFunction(value)) continue; if (!onlyIfAbsent || !(property in destination)) destination[property] = value.methodize(); } } function findDOMClass(tagName) { var klass; var trans = { "OPTGROUP": "OptGroup", "TEXTAREA": "TextArea", "P": "Paragraph", "FIELDSET": "FieldSet", "UL": "UList", "OL": "OList", "DL": "DList", "DIR": "Directory", "H1": "Heading", "H2": "Heading", "H3": "Heading", "H4": "Heading", "H5": "Heading", "H6": "Heading", "Q": "Quote", "INS": "Mod", "DEL": "Mod", "A": "Anchor", "IMG": "Image", "CAPTION": "TableCaption", "COL": "TableCol", "COLGROUP": "TableCol", "THEAD": "TableSection", "TFOOT": "TableSection", "TBODY": "TableSection", "TR": "TableRow", "TH": "TableCell", "TD": "TableCell", "FRAMESET": "FrameSet", "IFRAME": "IFrame" }; if (trans[tagName]) klass = 'HTML' + trans[tagName] + 'Element'; if (window[klass]) return window[klass]; klass = 'HTML' + tagName + 'Element'; if (window[klass]) return window[klass]; klass = 'HTML' + tagName.capitalize() + 'Element'; if (window[klass]) return window[klass]; window[klass] = { }; window[klass].prototype = document.createElement(tagName).__proto__; return window[klass]; } if (F.ElementExtensions) { copy(Element.Methods, HTMLElement.prototype); copy(Element.Methods.Simulated, HTMLElement.prototype, true); } if (F.SpecificElementExtensions) { for (var tag in Element.Methods.ByTag) { var klass = findDOMClass(tag); if (Object.isUndefined(klass)) continue; copy(T[tag], klass.prototype); } } Object.extend(Element, Element.Methods); delete Element.ByTag; if (Element.extend.refresh) Element.extend.refresh(); Element.cache = { }; }; document.viewport = { getDimensions: function() { var dimensions = { }; $w('width height').each(function(d) { var D = d.capitalize(); dimensions[d] = self['inner' + D] || (document.documentElement['client' + D] || document.body['client' + D]); }); return dimensions; }, getWidth: function() { return this.getDimensions().width; }, getHeight: function() { return this.getDimensions().height; }, getScrollOffsets: function() { return Element._returnOffset( window.pageXOffset || document.documentElement.scrollLeft || document.body.scrollLeft, window.pageYOffset || document.documentElement.scrollTop || document.body.scrollTop); } }; /* Portions of the Selector class are derived from Jack Slocum’s DomQuery, * part of YUI-Ext version 0.40, distributed under the terms of an MIT-style * license. Please see http://www.yui-ext.com/ for more information. */ var Selector = Class.create({ initialize: function(expression) { this.expression = expression.strip(); this.compileMatcher(); }, compileMatcher: function() { // Selectors with namespaced attributes can't use the XPath version if (Prototype.BrowserFeatures.XPath && !(/(\[[\w-]*?:|:checked)/).test(this.expression)) return this.compileXPathMatcher(); var e = this.expression, ps = Selector.patterns, h = Selector.handlers, c = Selector.criteria, le, p, m; if (Selector._cache[e]) { this.matcher = Selector._cache[e]; return; } this.matcher = ["this.matcher = function(root) {", "var r = root, h = Selector.handlers, c = false, n;"]; while (e && le != e && (/\S/).test(e)) { le = e; for (var i in ps) { p = ps[i]; if (m = e.match(p)) { this.matcher.push(Object.isFunction(c[i]) ? c[i](m) : new Template(c[i]).evaluate(m)); e = e.replace(m[0], ''); break; } } } this.matcher.push("return h.unique(n);\n}"); eval(this.matcher.join('\n')); Selector._cache[this.expression] = this.matcher; }, compileXPathMatcher: function() { var e = this.expression, ps = Selector.patterns, x = Selector.xpath, le, m; if (Selector._cache[e]) { this.xpath = Selector._cache[e]; return; } this.matcher = ['.//*']; while (e && le != e && (/\S/).test(e)) { le = e; for (var i in ps) { if (m = e.match(ps[i])) { this.matcher.push(Object.isFunction(x[i]) ? x[i](m) : new Template(x[i]).evaluate(m)); e = e.replace(m[0], ''); break; } } } this.xpath = this.matcher.join(''); Selector._cache[this.expression] = this.xpath; }, findElements: function(root) { root = root || document; if (this.xpath) return document._getElementsByXPath(this.xpath, root); return this.matcher(root); }, match: function(element) { this.tokens = []; var e = this.expression, ps = Selector.patterns, as = Selector.assertions; var le, p, m; while (e && le !== e && (/\S/).test(e)) { le = e; for (var i in ps) { p = ps[i]; if (m = e.match(p)) { // use the Selector.assertions methods unless the selector // is too complex. if (as[i]) { this.tokens.push([i, Object.clone(m)]); e = e.replace(m[0], ''); } else { // reluctantly do a document-wide search // and look for a match in the array return this.findElements(document).include(element); } } } } var match = true, name, matches; for (var i = 0, token; token = this.tokens[i]; i++) { name = token[0], matches = token[1]; if (!Selector.assertions[name](element, matches)) { match = false; break; } } return match; }, toString: function() { return this.expression; }, inspect: function() { return "#"; } }); Object.extend(Selector, { _cache: { }, xpath: { descendant: "//*", child: "/*", adjacent: "/following-sibling::*[1]", laterSibling: '/following-sibling::*', tagName: function(m) { if (m[1] == '*') return ''; return "[local-name()='" + m[1].toLowerCase() + "' or local-name()='" + m[1].toUpperCase() + "']"; }, className: "[contains(concat(' ', @class, ' '), ' #{1} ')]", id: "[@id='#{1}']", attrPresence: "[@#{1}]", attr: function(m) { m[3] = m[5] || m[6]; return new Template(Selector.xpath.operators[m[2]]).evaluate(m); }, pseudo: function(m) { var h = Selector.xpath.pseudos[m[1]]; if (!h) return ''; if (Object.isFunction(h)) return h(m); return new Template(Selector.xpath.pseudos[m[1]]).evaluate(m); }, operators: { '=': "[@#{1}='#{3}']", '!=': "[@#{1}!='#{3}']", '^=': "[starts-with(@#{1}, '#{3}')]", '$=': "[substring(@#{1}, (string-length(@#{1}) - string-length('#{3}') + 1))='#{3}']", '*=': "[contains(@#{1}, '#{3}')]", '~=': "[contains(concat(' ', @#{1}, ' '), ' #{3} ')]", '|=': "[contains(concat('-', @#{1}, '-'), '-#{3}-')]" }, pseudos: { 'first-child': '[not(preceding-sibling::*)]', 'last-child': '[not(following-sibling::*)]', 'only-child': '[not(preceding-sibling::* or following-sibling::*)]', 'empty': "[count(*) = 0 and (count(text()) = 0 or translate(text(), ' \t\r\n', '') = '')]", 'checked': "[@checked]", 'disabled': "[@disabled]", 'enabled': "[not(@disabled)]", 'not': function(m) { var e = m[6], p = Selector.patterns, x = Selector.xpath, le, m, v; var exclusion = []; while (e && le != e && (/\S/).test(e)) { le = e; for (var i in p) { if (m = e.match(p[i])) { v = Object.isFunction(x[i]) ? x[i](m) : new Template(x[i]).evaluate(m); exclusion.push("(" + v.substring(1, v.length - 1) + ")"); e = e.replace(m[0], ''); break; } } } return "[not(" + exclusion.join(" and ") + ")]"; }, 'nth-child': function(m) { return Selector.xpath.pseudos.nth("(count(./preceding-sibling::*) + 1) ", m); }, 'nth-last-child': function(m) { return Selector.xpath.pseudos.nth("(count(./following-sibling::*) + 1) ", m); }, 'nth-of-type': function(m) { return Selector.xpath.pseudos.nth("position() ", m); }, 'nth-last-of-type': function(m) { return Selector.xpath.pseudos.nth("(last() + 1 - position()) ", m); }, 'first-of-type': function(m) { m[6] = "1"; return Selector.xpath.pseudos['nth-of-type'](m); }, 'last-of-type': function(m) { m[6] = "1"; return Selector.xpath.pseudos['nth-last-of-type'](m); }, 'only-of-type': function(m) { var p = Selector.xpath.pseudos; return p['first-of-type'](m) + p['last-of-type'](m); }, nth: function(fragment, m) { var mm, formula = m[6], predicate; if (formula == 'even') formula = '2n+0'; if (formula == 'odd') formula = '2n+1'; if (mm = formula.match(/^(\d+)$/)) // digit only return '[' + fragment + "= " + mm[1] + ']'; if (mm = formula.match(/^(-?\d*)?n(([+-])(\d+))?/)) { // an+b if (mm[1] == "-") mm[1] = -1; var a = mm[1] ? Number(mm[1]) : 1; var b = mm[2] ? Number(mm[2]) : 0; predicate = "[((#{fragment} - #{b}) mod #{a} = 0) and " + "((#{fragment} - #{b}) div #{a} >= 0)]"; return new Template(predicate).evaluate({ fragment: fragment, a: a, b: b }); } } } }, criteria: { tagName: 'n = h.tagName(n, r, "#{1}", c); c = false;', className: 'n = h.className(n, r, "#{1}", c); c = false;', id: 'n = h.id(n, r, "#{1}", c); c = false;', attrPresence: 'n = h.attrPresence(n, r, "#{1}"); c = false;', attr: function(m) { m[3] = (m[5] || m[6]); return new Template('n = h.attr(n, r, "#{1}", "#{3}", "#{2}"); c = false;').evaluate(m); }, pseudo: function(m) { if (m[6]) m[6] = m[6].replace(/"/g, '\\"'); return new Template('n = h.pseudo(n, "#{1}", "#{6}", r, c); c = false;').evaluate(m); }, descendant: 'c = "descendant";', child: 'c = "child";', adjacent: 'c = "adjacent";', laterSibling: 'c = "laterSibling";' }, patterns: { // combinators must be listed first // (and descendant needs to be last combinator) laterSibling: /^\s*~\s*/, child: /^\s*>\s*/, adjacent: /^\s*\+\s*/, descendant: /^\s/, // selectors follow tagName: /^\s*(\*|[\w\-]+)(\b|$)?/, id: /^#([\w\-\*]+)(\b|$)/, className: /^\.([\w\-\*]+)(\b|$)/, pseudo: /^:((first|last|nth|nth-last|only)(-child|-of-type)|empty|checked|(en|dis)abled|not)(\((.*?)\))?(\b|$|(?=\s)|(?=:))/, attrPresence: /^\[([\w]+)\]/, attr: /\[((?:[\w-]*:)?[\w-]+)\s*(?:([!^$*~|]?=)\s*((['"])([^\4]*?)\4|([^'"][^\]]*?)))?\]/ }, // for Selector.match and Element#match assertions: { tagName: function(element, matches) { return matches[1].toUpperCase() == element.tagName.toUpperCase(); }, className: function(element, matches) { return Element.hasClassName(element, matches[1]); }, id: function(element, matches) { return element.id === matches[1]; }, attrPresence: function(element, matches) { return Element.hasAttribute(element, matches[1]); }, attr: function(element, matches) { var nodeValue = Element.readAttribute(element, matches[1]); return Selector.operators[matches[2]](nodeValue, matches[3]); } }, handlers: { // UTILITY FUNCTIONS // joins two collections concat: function(a, b) { for (var i = 0, node; node = b[i]; i++) a.push(node); return a; }, // marks an array of nodes for counting mark: function(nodes) { for (var i = 0, node; node = nodes[i]; i++) node._counted = true; return nodes; }, unmark: function(nodes) { for (var i = 0, node; node = nodes[i]; i++) node._counted = undefined; return nodes; }, // mark each child node with its position (for nth calls) // "ofType" flag indicates whether we're indexing for nth-of-type // rather than nth-child index: function(parentNode, reverse, ofType) { parentNode._counted = true; if (reverse) { for (var nodes = parentNode.childNodes, i = nodes.length - 1, j = 1; i >= 0; i--) { var node = nodes[i]; if (node.nodeType == 1 && (!ofType || node._counted)) node.nodeIndex = j++; } } else { for (var i = 0, j = 1, nodes = parentNode.childNodes; node = nodes[i]; i++) if (node.nodeType == 1 && (!ofType || node._counted)) node.nodeIndex = j++; } }, // filters out duplicates and extends all nodes unique: function(nodes) { if (nodes.length == 0) return nodes; var results = [], n; for (var i = 0, l = nodes.length; i < l; i++) if (!(n = nodes[i])._counted) { n._counted = true; results.push(Element.extend(n)); } return Selector.handlers.unmark(results); }, // COMBINATOR FUNCTIONS descendant: function(nodes) { var h = Selector.handlers; for (var i = 0, results = [], node; node = nodes[i]; i++) h.concat(results, node.getElementsByTagName('*')); return results; }, child: function(nodes) { var h = Selector.handlers; for (var i = 0, results = [], node; node = nodes[i]; i++) { for (var j = 0, children = [], child; child = node.childNodes[j]; j++) if (child.nodeType == 1 && child.tagName != '!') results.push(child); } return results; }, adjacent: function(nodes) { for (var i = 0, results = [], node; node = nodes[i]; i++) { var next = this.nextElementSibling(node); if (next) results.push(next); } return results; }, laterSibling: function(nodes) { var h = Selector.handlers; for (var i = 0, results = [], node; node = nodes[i]; i++) h.concat(results, Element.nextSiblings(node)); return results; }, nextElementSibling: function(node) { while (node = node.nextSibling) if (node.nodeType == 1) return node; return null; }, previousElementSibling: function(node) { while (node = node.previousSibling) if (node.nodeType == 1) return node; return null; }, // TOKEN FUNCTIONS tagName: function(nodes, root, tagName, combinator) { tagName = tagName.toUpperCase(); var results = [], h = Selector.handlers; if (nodes) { if (combinator) { // fastlane for ordinary descendant combinators if (combinator == "descendant") { for (var i = 0, node; node = nodes[i]; i++) h.concat(results, node.getElementsByTagName(tagName)); return results; } else nodes = this[combinator](nodes); if (tagName == "*") return nodes; } for (var i = 0, node; node = nodes[i]; i++) if (node.tagName.toUpperCase() == tagName) results.push(node); return results; } else return root.getElementsByTagName(tagName); }, id: function(nodes, root, id, combinator) { var targetNode = $(id), h = Selector.handlers; if (!targetNode) return []; if (!nodes && root == document) return [targetNode]; if (nodes) { if (combinator) { if (combinator == 'child') { for (var i = 0, node; node = nodes[i]; i++) if (targetNode.parentNode == node) return [targetNode]; } else if (combinator == 'descendant') { for (var i = 0, node; node = nodes[i]; i++) if (Element.descendantOf(targetNode, node)) return [targetNode]; } else if (combinator == 'adjacent') { for (var i = 0, node; node = nodes[i]; i++) if (Selector.handlers.previousElementSibling(targetNode) == node) return [targetNode]; } else nodes = h[combinator](nodes); } for (var i = 0, node; node = nodes[i]; i++) if (node == targetNode) return [targetNode]; return []; } return (targetNode && Element.descendantOf(targetNode, root)) ? [targetNode] : []; }, className: function(nodes, root, className, combinator) { if (nodes && combinator) nodes = this[combinator](nodes); return Selector.handlers.byClassName(nodes, root, className); }, byClassName: function(nodes, root, className) { if (!nodes) nodes = Selector.handlers.descendant([root]); var needle = ' ' + className + ' '; for (var i = 0, results = [], node, nodeClassName; node = nodes[i]; i++) { nodeClassName = node.className; if (nodeClassName.length == 0) continue; if (nodeClassName == className || (' ' + nodeClassName + ' ').include(needle)) results.push(node); } return results; }, attrPresence: function(nodes, root, attr) { if (!nodes) nodes = root.getElementsByTagName("*"); var results = []; for (var i = 0, node; node = nodes[i]; i++) if (Element.hasAttribute(node, attr)) results.push(node); return results; }, attr: function(nodes, root, attr, value, operator) { if (!nodes) nodes = root.getElementsByTagName("*"); var handler = Selector.operators[operator], results = []; for (var i = 0, node; node = nodes[i]; i++) { var nodeValue = Element.readAttribute(node, attr); if (nodeValue === null) continue; if (handler(nodeValue, value)) results.push(node); } return results; }, pseudo: function(nodes, name, value, root, combinator) { if (nodes && combinator) nodes = this[combinator](nodes); if (!nodes) nodes = root.getElementsByTagName("*"); return Selector.pseudos[name](nodes, value, root); } }, pseudos: { 'first-child': function(nodes, value, root) { for (var i = 0, results = [], node; node = nodes[i]; i++) { if (Selector.handlers.previousElementSibling(node)) continue; results.push(node); } return results; }, 'last-child': function(nodes, value, root) { for (var i = 0, results = [], node; node = nodes[i]; i++) { if (Selector.handlers.nextElementSibling(node)) continue; results.push(node); } return results; }, 'only-child': function(nodes, value, root) { var h = Selector.handlers; for (var i = 0, results = [], node; node = nodes[i]; i++) if (!h.previousElementSibling(node) && !h.nextElementSibling(node)) results.push(node); return results; }, 'nth-child': function(nodes, formula, root) { return Selector.pseudos.nth(nodes, formula, root); }, 'nth-last-child': function(nodes, formula, root) { return Selector.pseudos.nth(nodes, formula, root, true); }, 'nth-of-type': function(nodes, formula, root) { return Selector.pseudos.nth(nodes, formula, root, false, true); }, 'nth-last-of-type': function(nodes, formula, root) { return Selector.pseudos.nth(nodes, formula, root, true, true); }, 'first-of-type': function(nodes, formula, root) { return Selector.pseudos.nth(nodes, "1", root, false, true); }, 'last-of-type': function(nodes, formula, root) { return Selector.pseudos.nth(nodes, "1", root, true, true); }, 'only-of-type': function(nodes, formula, root) { var p = Selector.pseudos; return p['last-of-type'](p['first-of-type'](nodes, formula, root), formula, root); }, // handles the an+b logic getIndices: function(a, b, total) { if (a == 0) return b > 0 ? [b] : []; return $R(1, total).inject([], function(memo, i) { if (0 == (i - b) % a && (i - b) / a >= 0) memo.push(i); return memo; }); }, // handles nth(-last)-child, nth(-last)-of-type, and (first|last)-of-type nth: function(nodes, formula, root, reverse, ofType) { if (nodes.length == 0) return []; if (formula == 'even') formula = '2n+0'; if (formula == 'odd') formula = '2n+1'; var h = Selector.handlers, results = [], indexed = [], m; h.mark(nodes); for (var i = 0, node; node = nodes[i]; i++) { if (!node.parentNode._counted) { h.index(node.parentNode, reverse, ofType); indexed.push(node.parentNode); } } if (formula.match(/^\d+$/)) { // just a number formula = Number(formula); for (var i = 0, node; node = nodes[i]; i++) if (node.nodeIndex == formula) results.push(node); } else if (m = formula.match(/^(-?\d*)?n(([+-])(\d+))?/)) { // an+b if (m[1] == "-") m[1] = -1; var a = m[1] ? Number(m[1]) : 1; var b = m[2] ? Number(m[2]) : 0; var indices = Selector.pseudos.getIndices(a, b, nodes.length); for (var i = 0, node, l = indices.length; node = nodes[i]; i++) { for (var j = 0; j < l; j++) if (node.nodeIndex == indices[j]) results.push(node); } } h.unmark(nodes); h.unmark(indexed); return results; }, 'empty': function(nodes, value, root) { for (var i = 0, results = [], node; node = nodes[i]; i++) { // IE treats comments as element nodes if (node.tagName == '!' || (node.firstChild && !node.innerHTML.match(/^\s*$/))) continue; results.push(node); } return results; }, 'not': function(nodes, selector, root) { var h = Selector.handlers, selectorType, m; var exclusions = new Selector(selector).findElements(root); h.mark(exclusions); for (var i = 0, results = [], node; node = nodes[i]; i++) if (!node._counted) results.push(node); h.unmark(exclusions); return results; }, 'enabled': function(nodes, value, root) { for (var i = 0, results = [], node; node = nodes[i]; i++) if (!node.disabled) results.push(node); return results; }, 'disabled': function(nodes, value, root) { for (var i = 0, results = [], node; node = nodes[i]; i++) if (node.disabled) results.push(node); return results; }, 'checked': function(nodes, value, root) { for (var i = 0, results = [], node; node = nodes[i]; i++) if (node.checked) results.push(node); return results; } }, operators: { '=': function(nv, v) { return nv == v; }, '!=': function(nv, v) { return nv != v; }, '^=': function(nv, v) { return nv.startsWith(v); }, '$=': function(nv, v) { return nv.endsWith(v); }, '*=': function(nv, v) { return nv.include(v); }, '~=': function(nv, v) { return (' ' + nv + ' ').include(' ' + v + ' '); }, '|=': function(nv, v) { return ('-' + nv.toUpperCase() + '-').include('-' + v.toUpperCase() + '-'); } }, matchElements: function(elements, expression) { var matches = new Selector(expression).findElements(), h = Selector.handlers; h.mark(matches); for (var i = 0, results = [], element; element = elements[i]; i++) if (element._counted) results.push(element); h.unmark(matches); return results; }, findElement: function(elements, expression, index) { if (Object.isNumber(expression)) { index = expression; expression = false; } return Selector.matchElements(elements, expression || '*')[index || 0]; }, findChildElements: function(element, expressions) { var exprs = expressions.join(','), expressions = []; exprs.scan(/(([\w#:.~>+()\s-]+|\*|\[.*?\])+)\s*(,|$)/, function(m) { expressions.push(m[1].strip()); }); var results = [], h = Selector.handlers; for (var i = 0, l = expressions.length, selector; i < l; i++) { selector = new Selector(expressions[i].strip()); h.concat(results, selector.findElements(element)); } return (l > 1) ? h.unique(results) : results; } }); function $$() { return Selector.findChildElements(document, $A(arguments)); } var Form = { reset: function(form) { $(form).reset(); return form; }, serializeElements: function(elements, options) { if (typeof options != 'object') options = { hash: !!options }; else if (options.hash === undefined) options.hash = true; var key, value, submitted = false, submit = options.submit; var data = elements.inject({ }, function(result, element) { if (!element.disabled && element.name) { key = element.name; value = $(element).getValue(); if (value != null && (element.type != 'submit' || (!submitted && submit !== false && (!submit || key == submit) && (submitted = true)))) { if (key in result) { // a key is already present; construct an array of values if (!Object.isArray(result[key])) result[key] = [result[key]]; result[key].push(value); } else result[key] = value; } } return result; }); return options.hash ? data : Object.toQueryString(data); } }; Form.Methods = { serialize: function(form, options) { return Form.serializeElements(Form.getElements(form), options); }, getElements: function(form) { return $A($(form).getElementsByTagName('*')).inject([], function(elements, child) { if (Form.Element.Serializers[child.tagName.toLowerCase()]) elements.push(Element.extend(child)); return elements; } ); }, getInputs: function(form, typeName, name) { form = $(form); var inputs = form.getElementsByTagName('input'); if (!typeName && !name) return $A(inputs).map(Element.extend); for (var i = 0, matchingInputs = [], length = inputs.length; i < length; i++) { var input = inputs[i]; if ((typeName && input.type != typeName) || (name && input.name != name)) continue; matchingInputs.push(Element.extend(input)); } return matchingInputs; }, disable: function(form) { form = $(form); Form.getElements(form).invoke('disable'); return form; }, enable: function(form) { form = $(form); Form.getElements(form).invoke('enable'); return form; }, findFirstElement: function(form) { var elements = $(form).getElements().findAll(function(element) { return 'hidden' != element.type && !element.disabled; }); var firstByIndex = elements.findAll(function(element) { return element.hasAttribute('tabIndex') && element.tabIndex >= 0; }).sortBy(function(element) { return element.tabIndex }).first(); return firstByIndex ? firstByIndex : elements.find(function(element) { return ['input', 'select', 'textarea'].include(element.tagName.toLowerCase()); }); }, focusFirstElement: function(form) { form = $(form); form.findFirstElement().activate(); return form; }, request: function(form, options) { form = $(form), options = Object.clone(options || { }); var params = options.parameters, action = form.readAttribute('action') || ''; if (action.blank()) action = window.location.href; options.parameters = form.serialize(true); if (params) { if (Object.isString(params)) params = params.toQueryParams(); Object.extend(options.parameters, params); } if (form.hasAttribute('method') && !options.method) options.method = form.method; return new Ajax.Request(action, options); } }; /*--------------------------------------------------------------------------*/ Form.Element = { focus: function(element) { $(element).focus(); return element; }, select: function(element) { $(element).select(); return element; } }; Form.Element.Methods = { serialize: function(element) { element = $(element); if (!element.disabled && element.name) { var value = element.getValue(); if (value != undefined) { var pair = { }; pair[element.name] = value; return Object.toQueryString(pair); } } return ''; }, getValue: function(element) { element = $(element); var method = element.tagName.toLowerCase(); return Form.Element.Serializers[method](element); }, setValue: function(element, value) { element = $(element); var method = element.tagName.toLowerCase(); Form.Element.Serializers[method](element, value); return element; }, clear: function(element) { $(element).value = ''; return element; }, present: function(element) { return $(element).value != ''; }, activate: function(element) { element = $(element); try { element.focus(); if (element.select && (element.tagName.toLowerCase() != 'input' || !['button', 'reset', 'submit'].include(element.type))) element.select(); } catch (e) { } return element; }, disable: function(element) { element = $(element); element.blur(); element.disabled = true; return element; }, enable: function(element) { element = $(element); element.disabled = false; return element; } }; /*--------------------------------------------------------------------------*/ var Field = Form.Element; var $F = Form.Element.Methods.getValue; /*--------------------------------------------------------------------------*/ Form.Element.Serializers = { input: function(element, value) { switch (element.type.toLowerCase()) { case 'checkbox': case 'radio': return Form.Element.Serializers.inputSelector(element, value); default: return Form.Element.Serializers.textarea(element, value); } }, inputSelector: function(element, value) { if (value === undefined) return element.checked ? element.value : null; else element.checked = !!value; }, textarea: function(element, value) { if (value === undefined) return element.value; else element.value = value; }, select: function(element, index) { if (index === undefined) return this[element.type == 'select-one' ? 'selectOne' : 'selectMany'](element); else { var opt, value, single = !Object.isArray(index); for (var i = 0, length = element.length; i < length; i++) { opt = element.options[i]; value = this.optionValue(opt); if (single) { if (value == index) { opt.selected = true; return; } } else opt.selected = index.include(value); } } }, selectOne: function(element) { var index = element.selectedIndex; return index >= 0 ? this.optionValue(element.options[index]) : null; }, selectMany: function(element) { var values, length = element.length; if (!length) return null; for (var i = 0, values = []; i < length; i++) { var opt = element.options[i]; if (opt.selected) values.push(this.optionValue(opt)); } return values; }, optionValue: function(opt) { // extend element because hasAttribute may not be native return Element.extend(opt).hasAttribute('value') ? opt.value : opt.text; } }; /*--------------------------------------------------------------------------*/ Abstract.TimedObserver = Class.create(PeriodicalExecuter, { initialize: function($super, element, frequency, callback) { $super(callback, frequency); this.element = $(element); this.lastValue = this.getValue(); }, execute: function() { var value = this.getValue(); if (Object.isString(this.lastValue) && Object.isString(value) ? this.lastValue != value : String(this.lastValue) != String(value)) { this.callback(this.element, value); this.lastValue = value; } } }); Form.Element.Observer = Class.create(Abstract.TimedObserver, { getValue: function() { return Form.Element.getValue(this.element); } }); Form.Observer = Class.create(Abstract.TimedObserver, { getValue: function() { return Form.serialize(this.element); } }); /*--------------------------------------------------------------------------*/ Abstract.EventObserver = Class.create({ initialize: function(element, callback) { this.element = $(element); this.callback = callback; this.lastValue = this.getValue(); if (this.element.tagName.toLowerCase() == 'form') this.registerFormCallbacks(); else this.registerCallback(this.element); }, onElementEvent: function() { var value = this.getValue(); if (this.lastValue != value) { this.callback(this.element, value); this.lastValue = value; } }, registerFormCallbacks: function() { Form.getElements(this.element).each(this.registerCallback, this); }, registerCallback: function(element) { if (element.type) { switch (element.type.toLowerCase()) { case 'checkbox': case 'radio': Event.observe(element, 'click', this.onElementEvent.bind(this)); break; default: Event.observe(element, 'change', this.onElementEvent.bind(this)); break; } } } }); Form.Element.EventObserver = Class.create(Abstract.EventObserver, { getValue: function() { return Form.Element.getValue(this.element); } }); Form.EventObserver = Class.create(Abstract.EventObserver, { getValue: function() { return Form.serialize(this.element); } }); if (!window.Event) var Event = { }; Object.extend(Event, { KEY_BACKSPACE: 8, KEY_TAB: 9, KEY_RETURN: 13, KEY_ESC: 27, KEY_LEFT: 37, KEY_UP: 38, KEY_RIGHT: 39, KEY_DOWN: 40, KEY_DELETE: 46, KEY_HOME: 36, KEY_END: 35, KEY_PAGEUP: 33, KEY_PAGEDOWN: 34, KEY_INSERT: 45, cache: { }, relatedTarget: function(event) { var element; switch(event.type) { case 'mouseover': element = event.fromElement; break; case 'mouseout': element = event.toElement; break; default: return null; } return Element.extend(element); } }); Event.Methods = (function() { var isButton; if (Prototype.Browser.IE) { var buttonMap = { 0: 1, 1: 4, 2: 2 }; isButton = function(event, code) { return event.button == buttonMap[code]; }; } else if (Prototype.Browser.WebKit) { isButton = function(event, code) { switch (code) { case 0: return event.which == 1 && !event.metaKey; case 1: return event.which == 1 && event.metaKey; default: return false; } }; } else { isButton = function(event, code) { return event.which ? (event.which === code + 1) : (event.button === code); }; } return { isLeftClick: function(event) { return isButton(event, 0) }, isMiddleClick: function(event) { return isButton(event, 1) }, isRightClick: function(event) { return isButton(event, 2) }, element: function(event) { var node = Event.extend(event).target; return Element.extend(node.nodeType == Node.TEXT_NODE ? node.parentNode : node); }, findElement: function(event, expression) { var element = Event.element(event); return element.match(expression) ? element : element.up(expression); }, pointer: function(event) { return { x: event.pageX || (event.clientX + (document.documentElement.scrollLeft || document.body.scrollLeft)), y: event.pageY || (event.clientY + (document.documentElement.scrollTop || document.body.scrollTop)) }; }, pointerX: function(event) { return Event.pointer(event).x }, pointerY: function(event) { return Event.pointer(event).y }, stop: function(event) { Event.extend(event); event.preventDefault(); event.stopPropagation(); event.stopped = true; } }; })(); Event.extend = (function() { var methods = Object.keys(Event.Methods).inject({ }, function(m, name) { m[name] = Event.Methods[name].methodize(); return m; }); if (Prototype.Browser.IE) { Object.extend(methods, { stopPropagation: function() { this.cancelBubble = true }, preventDefault: function() { this.returnValue = false }, inspect: function() { return "[object Event]" } }); return function(event) { if (!event) return false; if (event._extendedByPrototype) return event; event._extendedByPrototype = Prototype.emptyFunction; var pointer = Event.pointer(event); Object.extend(event, { target: event.srcElement, relatedTarget: Event.relatedTarget(event), pageX: pointer.x, pageY: pointer.y }); return Object.extend(event, methods); }; } else { Event.prototype = Event.prototype || document.createEvent("HTMLEvents").__proto__; Object.extend(Event.prototype, methods); return Prototype.K; } })(); Object.extend(Event, (function() { var cache = Event.cache; function getEventID(element) { if (element._eventID) return element._eventID; arguments.callee.id = arguments.callee.id || 1; return element._eventID = ++arguments.callee.id; } function getDOMEventName(eventName) { if (eventName && eventName.include(':')) return "dataavailable"; return eventName; } function getCacheForID(id) { return cache[id] = cache[id] || { }; } function getWrappersForEventName(id, eventName) { var c = getCacheForID(id); return c[eventName] = c[eventName] || []; } function createWrapper(element, eventName, handler) { var id = getEventID(element); var c = getWrappersForEventName(id, eventName); if (c.pluck("handler").include(handler)) return false; var wrapper = function(event) { if (!Event || !Event.extend || (event.eventName && event.eventName != eventName)) return false; Event.extend(event); handler.call(element, event) }; wrapper.handler = handler; c.push(wrapper); return wrapper; } function findWrapper(id, eventName, handler) { var c = getWrappersForEventName(id, eventName); return c.find(function(wrapper) { return wrapper.handler == handler }); } function destroyWrapper(id, eventName, handler) { var c = getCacheForID(id); if (!c[eventName]) return false; c[eventName] = c[eventName].without(findWrapper(id, eventName, handler)); } function destroyCache() { for (var id in cache) for (var eventName in cache[id]) cache[id][eventName] = null; } if (window.attachEvent) { window.attachEvent("onunload", destroyCache); } return { observe: function(element, eventName, handler) { element = $(element); var name = getDOMEventName(eventName); var wrapper = createWrapper(element, eventName, handler); if (!wrapper) return element; if (element.addEventListener) { element.addEventListener(name, wrapper, false); } else { element.attachEvent("on" + name, wrapper); } return element; }, stopObserving: function(element, eventName, handler) { element = $(element); var id = getEventID(element), name = getDOMEventName(eventName); if (!handler && eventName) { getWrappersForEventName(id, eventName).each(function(wrapper) { element.stopObserving(eventName, wrapper.handler); }); return element; } else if (!eventName) { Object.keys(getCacheForID(id)).each(function(eventName) { element.stopObserving(eventName); }); return element; } var wrapper = findWrapper(id, eventName, handler); if (!wrapper) return element; if (element.removeEventListener) { element.removeEventListener(name, wrapper, false); } else { element.detachEvent("on" + name, wrapper); } destroyWrapper(id, eventName, handler); return element; }, fire: function(element, eventName, memo) { element = $(element); if (element == document && document.createEvent && !element.dispatchEvent) element = document.documentElement; if (document.createEvent) { var event = document.createEvent("HTMLEvents"); event.initEvent("dataavailable", true, true); } else { var event = document.createEventObject(); event.eventType = "ondataavailable"; } event.eventName = eventName; event.memo = memo || { }; if (document.createEvent) { element.dispatchEvent(event); } else { element.fireEvent(event.eventType, event); } return event; } }; })()); Object.extend(Event, Event.Methods); Element.addMethods({ fire: Event.fire, observe: Event.observe, stopObserving: Event.stopObserving }); Object.extend(document, { fire: Element.Methods.fire.methodize(), observe: Element.Methods.observe.methodize(), stopObserving: Element.Methods.stopObserving.methodize() }); (function() { /* Support for the DOMContentLoaded event is based on work by Dan Webb, Matthias Miller, Dean Edwards and John Resig. */ var timer, fired = false; function fireContentLoadedEvent() { if (fired) return; if (timer) window.clearInterval(timer); document.fire("dom:loaded"); fired = true; } if (document.addEventListener) { if (Prototype.Browser.WebKit) { timer = window.setInterval(function() { if (/loaded|complete/.test(document.readyState)) fireContentLoadedEvent(); }, 0); Event.observe(window, "load", fireContentLoadedEvent); } else { document.addEventListener("DOMContentLoaded", fireContentLoadedEvent, false); } } else { document.write("