/*
 * jQuery Form Plugin
 * version: 2.07 (03/04/2008)
 * @requires jQuery v1.2.2 or later
 *
 * Examples 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 (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) 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]
            })
        }
        if (options.beforeSubmit && options.beforeSubmit(a, this, options) === false) return this;
        this.trigger('form-submit-validate', [a, this, options, veto]);
        if (veto.veto) 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)
        };
        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);
        this.trigger('form-submit-notify', [this, options]);
        return this;
        function fileUpload() {
            var form = $form[0];
            var opts = $.extend({},
            $.ajaxSettings, options);
            var id = 'jqFormIO' + (new Date().getTime());
            var $io = $('<iframe id="' + id + '" name="' + id + '" />');
            var io = $io[0];
            var op8 = $.browser.opera && window.opera.version() < 9;
            if ($.browser.msie || op8) io.src = 'javascript:false;document.write("");';
            $io.css({
                position: 'absolute',
                top: '-1000px',
                left: '-1000px'
            });
            var xhr = {
                responseText: null,
                responseXML: null,
                status: 0,
                statusText: 'n/a',
                getAllResponseHeaders: function() {},
                getResponseHeader: function() {},
                setRequestHeader: function() {}
            };
            var g = opts.global;
            if (g && !$.active++) $.event.trigger("ajaxStart");
            if (g) $.event.trigger("ajaxSend", [xhr, opts]);
            var cbInvoked = 0;
            var timedOut = 0;
            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 ok = true;
                try {
                    if (timedOut) throw 'timeout';
                    var data, doc;
                    doc = io.contentWindow ? io.contentWindow.document: io.contentDocument ? io.contentDocument: io.document;
                    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
            }
        })
    }
})(jQuery);
