/*
 * jQuery Form Plugin
 * version: 2.12 (06/07/2008)
 * @requires jQuery v1.2.2 or later
 *
 * Examples and documentation at: http://malsup.com/jquery/form/
 * Dual licensed under the MIT and GPL licenses:
 * http://www.opensource.org/licenses/mit-license.php
 * http://www.gnu.org/licenses/gpl.html
 *
 * Revision: $Id$
 */
(function($) {
$.fn.ajaxSubmit = function(options) {
 if (!this.length) {
 log('ajaxSubmit: skipping submit process - no element selected');
 return this;
 }

 if (typeof options == 'function')
 options = { success: options };

 options = $.extend({
 url: this.attr('action') || window.location.toString(),
 type: this.attr('method') || 'GET'
 }, options || {});
 var veto = {};
 this.trigger('form-pre-serialize', [this, options, veto]);
 if (veto.veto) {
 log('ajaxSubmit: submit vetoed via form-pre-serialize trigger');
 return this;
 }

 var a = this.formToArray(options.semantic);
 if (options.data) {
 options.extraData = options.data;
 for (var n in options.data)
 a.push( { name: n, value: options.data[n] } );
 }

 // give pre-submit callback an opportunity to abort the submit
 if (options.beforeSubmit && options.beforeSubmit(a, this, options) === false) {
 log('ajaxSubmit: submit aborted via beforeSubmit callback');
 return this;
 }

 // fire vetoable 'validate' event
 this.trigger('form-submit-validate', [a, this, options, veto]);
 if (veto.veto) {
 log('ajaxSubmit: submit vetoed via form-submit-validate trigger');
 return this;
 }

 var q = $.param(a);

 if (options.type.toUpperCase() == 'GET') {
 options.url += (options.url.indexOf('?') >= 0 ? '&' : '?') + q;
 options.data = null;
 }
 else
 options.data = q;

 var $form = this, callbacks = [];
 if (options.resetForm) callbacks.push(function() { $form.resetForm(); });
 if (options.clearForm) callbacks.push(function() { $form.clearForm(); });

 if (!options.dataType && options.target) {
 var oldSuccess = options.success || function(){};
 callbacks.push(function(data) {
 $(options.target).html(data).each(oldSuccess, arguments);
 });
 }
 else if (options.success)
 callbacks.push(options.success);

 options.success = function(data, status) {
 for (var i=0, max=callbacks.length; i < max; i++)
 callbacks[i](data, status, $form);
 };

 // are there files to upload?
 var files = $('input:file', this).fieldValue();
 var found = false;
 for (var j=0; j < files.length; j++)
 if (files[j])
 found = true;

 if (options.iframe || found) {

 if ($.browser.safari && options.closeKeepAlive)
 $.get(options.closeKeepAlive, fileUpload);
 else
 fileUpload();
 }
 else
 $.ajax(options);

 // fire 'notify' event
 this.trigger('form-submit-notify', [this, options]);
 return this;


 // private function for handling file uploads (hat tip to YAHOO!)
 function fileUpload() {
 var form = $form[0];

 if ($(':input[@name=submit]', form).length) {
 alert('Error: Form elements must not be named "submit".');
 return;
 }

 var opts = $.extend({}, $.ajaxSettings, options);

 var id = 'jqFormIO' + (new Date().getTime());
 var $io = $('<iframe id="' + id + '" name="' + id + '" />');
 var io = $io[0];

 if ($.browser.msie || $.browser.opera)
 io.src = 'javascript:false;document.write("");';
 $io.css({ position: 'absolute', top: '-1000px', left: '-1000px' });

 var xhr = { // mock object
 responseText: null,
 responseXML: null,
 status: 0,
 statusText: 'n/a',
 getAllResponseHeaders: function() {},
 getResponseHeader: function() {},
 setRequestHeader: function() {}
 };

 var g = opts.global;

 if (g && ! $.active++) $.event.trigger("ajaxStart");
 if (g) $.event.trigger("ajaxSend", [xhr, opts]);

 var cbInvoked = 0;
 var timedOut = 0;


 var sub = form.clk;
 if (sub) {
 var n = sub.name;
 if (n && !sub.disabled) {
 options.extraData = options.extraData || {};
 options.extraData[n] = sub.value;
 if (sub.type == "image") {
 options.extraData[name+'.x'] = form.clk_x;
 options.extraData[name+'.y'] = form.clk_y;
 }
 }
 }

 setTimeout(function() {

 var t = $form.attr('target'), a = $form.attr('action');
 $form.attr({
 target: id,
 encoding: 'multipart/form-data',
 enctype: 'multipart/form-data',
 method: 'POST',
 action: opts.url
 });

 if (opts.timeout)
 setTimeout(function() { timedOut = true; cb(); }, opts.timeout);

 var extraInputs = [];
 try {
 if (options.extraData)
 for (var n in options.extraData)
 extraInputs.push(
 $('<input type="hidden" name="'+n+'" value="'+options.extraData[n]+'" />')
 .appendTo(form)[0]);

 $io.appendTo('body');
 io.attachEvent ? io.attachEvent('onload', cb) : io.addEventListener('load', cb, false);
 form.submit();
 }
 finally {

 $form.attr('action', a);
 t ? $form.attr('target', t) : $form.removeAttr('target');
 $(extraInputs).remove();
 }
 }, 10);

 function cb() {
 if (cbInvoked++) return;

 io.detachEvent ? io.detachEvent('onload', cb) : io.removeEventListener('load', cb, false);

 var operaHack = 0;
 var ok = true;
 try {
 if (timedOut) throw 'timeout';

 var data, doc;

 doc = io.contentWindow ? io.contentWindow.document : io.contentDocument ? io.contentDocument : io.document;

 if (doc.body == null && !operaHack && $.browser.opera) {

 operaHack = 1;
 cbInvoked--;
 setTimeout(cb, 100);
 return;
 }

 xhr.responseText = doc.body ? doc.body.innerHTML : null;
 xhr.responseXML = doc.XMLDocument ? doc.XMLDocument : doc;
 xhr.getResponseHeader = function(header){
 var headers = {'content-type': opts.dataType};
 return headers[header];
 };

 if (opts.dataType == 'json' || opts.dataType == 'script') {
 var ta = doc.getElementsByTagName('textarea')[0];
 xhr.responseText = ta ? ta.value : xhr.responseText;
 }
 else if (opts.dataType == 'xml' && !xhr.responseXML && xhr.responseText != null) {
 xhr.responseXML = toXml(xhr.responseText);
 }
 data = $.httpData(xhr, opts.dataType);
 }
 catch(e){
 ok = false;
 $.handleError(opts, xhr, 'error', e);
 }

 if (ok) {
 opts.success(data, 'success');
 if (g) $.event.trigger("ajaxSuccess", [xhr, opts]);
 }
 if (g) $.event.trigger("ajaxComplete", [xhr, opts]);
 if (g && ! --$.active) $.event.trigger("ajaxStop");
 if (opts.complete) opts.complete(xhr, ok ? 'success' : 'error');

 setTimeout(function() {
 $io.remove();
 xhr.responseXML = null;
 }, 100);
 };

 function toXml(s, doc) {
 if (window.ActiveXObject) {
 doc = new ActiveXObject('Microsoft.XMLDOM');
 doc.async = 'false';
 doc.loadXML(s);
 }
 else
 doc = (new DOMParser()).parseFromString(s, 'text/xml');
 return (doc && doc.documentElement && doc.documentElement.tagName != 'parsererror') ? doc : null;
 };
 };
};


$.fn.ajaxForm = function(options) {
 return this.ajaxFormUnbind().bind('submit.form-plugin',function() {
 $(this).ajaxSubmit(options);
 return false;
 }).each(function() {

 $(":submit,input:image", this).bind('click.form-plugin',function(e) {
 var $form = this.form;
 $form.clk = this;
 if (this.type == 'image') {
 if (e.offsetX != undefined) {
 $form.clk_x = e.offsetX;
 $form.clk_y = e.offsetY;
 } else if (typeof $.fn.offset == 'function') {
 var offset = $(this).offset();
 $form.clk_x = e.pageX - offset.left;
 $form.clk_y = e.pageY - offset.top;
 } else {
 $form.clk_x = e.pageX - this.offsetLeft;
 $form.clk_y = e.pageY - this.offsetTop;
 }
 }
 setTimeout(function() { $form.clk = $form.clk_x = $form.clk_y = null; }, 10);
 });
 });
};

$.fn.ajaxFormUnbind = function() {
 this.unbind('submit.form-plugin');
 return this.each(function() {
 $(":submit,input:image", this).unbind('click.form-plugin');
 });

};

$.fn.formToArray = function(semantic) {
 var a = [];
 if (this.length == 0) return a;

 var form = this[0];
 var els = semantic ? form.getElementsByTagName('*') : form.elements;
 if (!els) return a;
 for(var i=0, max=els.length; i < max; i++) {
 var el = els[i];
 var n = el.name;
 if (!n) continue;

 if (semantic && form.clk && el.type == "image") {

 if(!el.disabled && form.clk == el)
 a.push({name: n+'.x', value: form.clk_x}, {name: n+'.y', value: form.clk_y});
 continue;
 }

 var v = $.fieldValue(el, true);
 if (v && v.constructor == Array) {
 for(var j=0, jmax=v.length; j < jmax; j++)
 a.push({name: n, value: v[j]});
 }
 else if (v !== null && typeof v != 'undefined')
 a.push({name: n, value: v});
 }

 if (!semantic && form.clk) {

 var inputs = form.getElementsByTagName("input");
 for(var i=0, max=inputs.length; i < max; i++) {
 var input = inputs[i];
 var n = input.name;
 if(n && !input.disabled && input.type == "image" && form.clk == input)
 a.push({name: n+'.x', value: form.clk_x}, {name: n+'.y', value: form.clk_y});
 }
 }
 return a;
};

$.fn.formSerialize = function(semantic) {

 return $.param(this.formToArray(semantic));
};

$.fn.fieldSerialize = function(successful) {
 var a = [];
 this.each(function() {
 var n = this.name;
 if (!n) return;
 var v = $.fieldValue(this, successful);
 if (v && v.constructor == Array) {
 for (var i=0,max=v.length; i < max; i++)
 a.push({name: n, value: v[i]});
 }
 else if (v !== null && typeof v != 'undefined')
 a.push({name: this.name, value: v});
 });

 return $.param(a);
};

$.fn.fieldValue = function(successful) {
 for (var val=[], i=0, max=this.length; i < max; i++) {
 var el = this[i];
 var v = $.fieldValue(el, successful);
 if (v === null || typeof v == 'undefined' || (v.constructor == Array && !v.length))
 continue;
 v.constructor == Array ? $.merge(val, v) : val.push(v);
 }
 return val;
};

$.fieldValue = function(el, successful) {
 var n = el.name, t = el.type, tag = el.tagName.toLowerCase();
 if (typeof successful == 'undefined') successful = true;

 if (successful && (!n || el.disabled || t == 'reset' || t == 'button' ||
 (t == 'checkbox' || t == 'radio') && !el.checked ||
 (t == 'submit' || t == 'image') && el.form && el.form.clk != el ||
 tag == 'select' && el.selectedIndex == -1))
 return null;

 if (tag == 'select') {
 var index = el.selectedIndex;
 if (index < 0) return null;
 var a = [], ops = el.options;
 var one = (t == 'select-one');
 var max = (one ? index+1 : ops.length);
 for(var i=(one ? index : 0); i < max; i++) {
 var op = ops[i];
 if (op.selected) {

 var v = $.browser.msie && !(op.attributes['value'].specified) ? op.text : op.value;
 if (one) return v;
 a.push(v);
 }
 }
 return a;
 }
 return el.value;
};

$.fn.clearForm = function() {
 return this.each(function() {
 $('input,select,textarea', this).clearFields();
 });
};

$.fn.clearFields = $.fn.clearInputs = function() {
 return this.each(function() {
 var t = this.type, tag = this.tagName.toLowerCase();
 if (t == 'text' || t == 'password' || tag == 'textarea')
 this.value = '';
 else if (t == 'checkbox' || t == 'radio')
 this.checked = false;
 else if (tag == 'select')
 this.selectedIndex = -1;
 });
};

$.fn.resetForm = function() {
 return this.each(function() {

 if (typeof this.reset == 'function' || (typeof this.reset == 'object' && !this.reset.nodeType))
 this.reset();
 });
};

$.fn.enable = function(b) {
 if (b == undefined) b = true;
 return this.each(function() {
 this.disabled = !b
 });
};


$.fn.select = function(select) {
 if (select == undefined) select = true;
 return this.each(function() {
 var t = this.type;
 if (t == 'checkbox' || t == 'radio')
 this.checked = select;
 else if (this.tagName.toLowerCase() == 'option') {
 var $sel = $(this).parent('select');
 if (select && $sel[0] && $sel[0].type == 'select-one') {
 $sel.find('option').select(false);
 }
 this.selected = select;
 }
 });
};

function log() {
 if ($.fn.ajaxSubmit.debug && window.console && window.console.log)
 window.console.log('[jquery.form] ' + Array.prototype.join.call(arguments,''));
};

})(jQuery);