633 lines
23 KiB
JavaScript
633 lines
23 KiB
JavaScript
/*
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* jQuery Form Plugin
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* version: 2.21 (08-FEB-2009)
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* @requires jQuery v1.2.2 or later
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*
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* Examples and documentation at: http://malsup.com/jquery/form/
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* Dual licensed under the MIT and GPL licenses:
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* http://www.opensource.org/licenses/mit-license.php
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* http://www.gnu.org/licenses/gpl.html
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*/
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;(function($) {
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/*
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Usage Note:
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-----------
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Do not use both ajaxSubmit and ajaxForm on the same form. These
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functions are intended to be exclusive. Use ajaxSubmit if you want
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to bind your own submit handler to the form. For example,
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$(document).ready(function() {
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$('#myForm').bind('submit', function() {
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$(this).ajaxSubmit({
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target: '#output'
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});
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return false; // <-- important!
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});
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});
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Use ajaxForm when you want the plugin to manage all the event binding
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for you. For example,
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$(document).ready(function() {
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$('#myForm').ajaxForm({
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target: '#output'
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});
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});
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When using ajaxForm, the ajaxSubmit function will be invoked for you
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at the appropriate time.
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*/
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/**
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* ajaxSubmit() provides a mechanism for immediately submitting
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* an HTML form using AJAX.
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*/
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$.fn.ajaxSubmit = function(options) {
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// fast fail if nothing selected (http://dev.jquery.com/ticket/2752)
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if (!this.length) {
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log('ajaxSubmit: skipping submit process - no element selected');
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return this;
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}
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if (typeof options == 'function')
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options = { success: options };
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options = $.extend({
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url: this.attr('action') || window.location.toString(),
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type: this.attr('method') || 'GET'
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}, options || {});
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// hook for manipulating the form data before it is extracted;
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// convenient for use with rich editors like tinyMCE or FCKEditor
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var veto = {};
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this.trigger('form-pre-serialize', [this, options, veto]);
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if (veto.veto) {
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log('ajaxSubmit: submit vetoed via form-pre-serialize trigger');
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return this;
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}
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// provide opportunity to alter form data before it is serialized
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if (options.beforeSerialize && options.beforeSerialize(this, options) === false) {
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log('ajaxSubmit: submit aborted via beforeSerialize callback');
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return this;
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}
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var a = this.formToArray(options.semantic);
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if (options.data) {
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options.extraData = options.data;
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for (var n in options.data) {
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if(options.data[n] instanceof Array) {
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for (var k in options.data[n])
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a.push( { name: n, value: options.data[n][k] } )
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}
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else
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a.push( { name: n, value: options.data[n] } );
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}
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}
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// give pre-submit callback an opportunity to abort the submit
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if (options.beforeSubmit && options.beforeSubmit(a, this, options) === false) {
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log('ajaxSubmit: submit aborted via beforeSubmit callback');
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return this;
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}
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// fire vetoable 'validate' event
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this.trigger('form-submit-validate', [a, this, options, veto]);
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if (veto.veto) {
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log('ajaxSubmit: submit vetoed via form-submit-validate trigger');
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return this;
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}
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var q = $.param(a);
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if (options.type.toUpperCase() == 'GET') {
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options.url += (options.url.indexOf('?') >= 0 ? '&' : '?') + q;
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options.data = null; // data is null for 'get'
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}
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else
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options.data = q; // data is the query string for 'post'
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var $form = this, callbacks = [];
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if (options.resetForm) callbacks.push(function() { $form.resetForm(); });
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if (options.clearForm) callbacks.push(function() { $form.clearForm(); });
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// perform a load on the target only if dataType is not provided
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if (!options.dataType && options.target) {
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var oldSuccess = options.success || function(){};
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callbacks.push(function(data) {
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$(options.target).html(data).each(oldSuccess, arguments);
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});
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}
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else if (options.success)
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callbacks.push(options.success);
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options.success = function(data, status) {
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for (var i=0, max=callbacks.length; i < max; i++)
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callbacks[i].apply(options, [data, status, $form]);
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};
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// are there files to upload?
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var files = $('input:file', this).fieldValue();
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var found = false;
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for (var j=0; j < files.length; j++)
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if (files[j])
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found = true;
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// options.iframe allows user to force iframe mode
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if (options.iframe || found) {
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// hack to fix Safari hang (thanks to Tim Molendijk for this)
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// see: http://groups.google.com/group/jquery-dev/browse_thread/thread/36395b7ab510dd5d
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if (options.closeKeepAlive)
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$.get(options.closeKeepAlive, fileUpload);
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else
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fileUpload();
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}
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else
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$.ajax(options);
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// fire 'notify' event
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this.trigger('form-submit-notify', [this, options]);
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return this;
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// private function for handling file uploads (hat tip to YAHOO!)
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function fileUpload() {
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var form = $form[0];
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if ($(':input[name=submit]', form).length) {
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alert('Error: Form elements must not be named "submit".');
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return;
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}
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var opts = $.extend({}, $.ajaxSettings, options);
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var s = jQuery.extend(true, {}, $.extend(true, {}, $.ajaxSettings), opts);
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var id = 'jqFormIO' + (new Date().getTime());
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var $io = $('<iframe id="' + id + '" name="' + id + '" src="about:blank" />');
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var io = $io[0];
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$io.css({ position: 'absolute', top: '-1000px', left: '-1000px' });
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var xhr = { // mock object
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aborted: 0,
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responseText: null,
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responseXML: null,
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status: 0,
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statusText: 'n/a',
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getAllResponseHeaders: function() {},
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getResponseHeader: function() {},
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setRequestHeader: function() {},
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abort: function() {
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this.aborted = 1;
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$io.attr('src','about:blank'); // abort op in progress
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}
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};
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var g = opts.global;
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// trigger ajax global events so that activity/block indicators work like normal
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if (g && ! $.active++) $.event.trigger("ajaxStart");
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if (g) $.event.trigger("ajaxSend", [xhr, opts]);
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if (s.beforeSend && s.beforeSend(xhr, s) === false) {
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s.global && jQuery.active--;
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return;
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}
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if (xhr.aborted)
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return;
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var cbInvoked = 0;
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var timedOut = 0;
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// add submitting element to data if we know it
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var sub = form.clk;
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if (sub) {
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var n = sub.name;
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if (n && !sub.disabled) {
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options.extraData = options.extraData || {};
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options.extraData[n] = sub.value;
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if (sub.type == "image") {
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options.extraData[name+'.x'] = form.clk_x;
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options.extraData[name+'.y'] = form.clk_y;
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}
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}
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}
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// take a breath so that pending repaints get some cpu time before the upload starts
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setTimeout(function() {
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// make sure form attrs are set
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var t = $form.attr('target'), a = $form.attr('action');
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// update form attrs in IE friendly way
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form.setAttribute('target',id);
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if (form.getAttribute('method') != 'POST')
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form.setAttribute('method', 'POST');
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if (form.getAttribute('action') != opts.url)
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form.setAttribute('action', opts.url);
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// ie borks in some cases when setting encoding
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if (! options.skipEncodingOverride) {
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$form.attr({
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encoding: 'multipart/form-data',
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enctype: 'multipart/form-data'
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});
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}
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// support timout
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if (opts.timeout)
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setTimeout(function() { timedOut = true; cb(); }, opts.timeout);
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// add "extra" data to form if provided in options
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var extraInputs = [];
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try {
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if (options.extraData)
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for (var n in options.extraData)
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extraInputs.push(
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$('<input type="hidden" name="'+n+'" value="'+options.extraData[n]+'" />')
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.appendTo(form)[0]);
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// add iframe to doc and submit the form
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$io.appendTo('body');
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io.attachEvent ? io.attachEvent('onload', cb) : io.addEventListener('load', cb, false);
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form.submit();
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}
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finally {
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// reset attrs and remove "extra" input elements
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form.setAttribute('action',a);
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t ? form.setAttribute('target', t) : $form.removeAttr('target');
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$(extraInputs).remove();
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}
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}, 10);
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var nullCheckFlag = 0;
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function cb() {
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if (cbInvoked++) return;
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io.detachEvent ? io.detachEvent('onload', cb) : io.removeEventListener('load', cb, false);
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var ok = true;
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try {
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if (timedOut) throw 'timeout';
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// extract the server response from the iframe
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var data, doc;
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doc = io.contentWindow ? io.contentWindow.document : io.contentDocument ? io.contentDocument : io.document;
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if ((doc.body == null || doc.body.innerHTML == '') && !nullCheckFlag) {
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// in some browsers (cough, Opera 9.2.x) the iframe DOM is not always traversable when
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// the onload callback fires, so we give them a 2nd chance
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nullCheckFlag = 1;
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cbInvoked--;
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setTimeout(cb, 100);
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return;
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}
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xhr.responseText = doc.body ? doc.body.innerHTML : null;
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xhr.responseXML = doc.XMLDocument ? doc.XMLDocument : doc;
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xhr.getResponseHeader = function(header){
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var headers = {'content-type': opts.dataType};
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return headers[header];
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};
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if (opts.dataType == 'json' || opts.dataType == 'script') {
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var ta = doc.getElementsByTagName('textarea')[0];
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xhr.responseText = ta ? ta.value : xhr.responseText;
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}
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else if (opts.dataType == 'xml' && !xhr.responseXML && xhr.responseText != null) {
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xhr.responseXML = toXml(xhr.responseText);
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}
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data = $.httpData(xhr, opts.dataType);
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}
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catch(e){
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ok = false;
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$.handleError(opts, xhr, 'error', e);
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}
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// ordering of these callbacks/triggers is odd, but that's how $.ajax does it
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if (ok) {
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opts.success(data, 'success');
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if (g) $.event.trigger("ajaxSuccess", [xhr, opts]);
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}
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if (g) $.event.trigger("ajaxComplete", [xhr, opts]);
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if (g && ! --$.active) $.event.trigger("ajaxStop");
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if (opts.complete) opts.complete(xhr, ok ? 'success' : 'error');
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// clean up
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setTimeout(function() {
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$io.remove();
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xhr.responseXML = null;
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}, 100);
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};
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function toXml(s, doc) {
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if (window.ActiveXObject) {
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doc = new ActiveXObject('Microsoft.XMLDOM');
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doc.async = 'false';
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doc.loadXML(s);
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}
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else
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doc = (new DOMParser()).parseFromString(s, 'text/xml');
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return (doc && doc.documentElement && doc.documentElement.tagName != 'parsererror') ? doc : null;
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};
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};
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};
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/**
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* ajaxForm() provides a mechanism for fully automating form submission.
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*
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* The advantages of using this method instead of ajaxSubmit() are:
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*
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* 1: This method will include coordinates for <input type="image" /> elements (if the element
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* is used to submit the form).
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* 2. This method will include the submit element's name/value data (for the element that was
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* used to submit the form).
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* 3. This method binds the submit() method to the form for you.
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*
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* The options argument for ajaxForm works exactly as it does for ajaxSubmit. ajaxForm merely
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* passes the options argument along after properly binding events for submit elements and
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* the form itself.
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*/
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$.fn.ajaxForm = function(options) {
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return this.ajaxFormUnbind().bind('submit.form-plugin',function() {
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$(this).ajaxSubmit(options);
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return false;
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}).each(function() {
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// store options in hash
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$(":submit,input:image", this).bind('click.form-plugin',function(e) {
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var form = this.form;
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form.clk = this;
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if (this.type == 'image') {
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if (e.offsetX != undefined) {
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form.clk_x = e.offsetX;
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form.clk_y = e.offsetY;
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} else if (typeof $.fn.offset == 'function') { // try to use dimensions plugin
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var offset = $(this).offset();
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form.clk_x = e.pageX - offset.left;
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form.clk_y = e.pageY - offset.top;
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} else {
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form.clk_x = e.pageX - this.offsetLeft;
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form.clk_y = e.pageY - this.offsetTop;
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}
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}
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// clear form vars
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setTimeout(function() { form.clk = form.clk_x = form.clk_y = null; }, 10);
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});
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});
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};
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// ajaxFormUnbind unbinds the event handlers that were bound by ajaxForm
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$.fn.ajaxFormUnbind = function() {
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this.unbind('submit.form-plugin');
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return this.each(function() {
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$(":submit,input:image", this).unbind('click.form-plugin');
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});
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};
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/**
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* formToArray() gathers form element data into an array of objects that can
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* be passed to any of the following ajax functions: $.get, $.post, or load.
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* Each object in the array has both a 'name' and 'value' property. An example of
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* an array for a simple login form might be:
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*
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* [ { name: 'username', value: 'jresig' }, { name: 'password', value: 'secret' } ]
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*
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* It is this array that is passed to pre-submit callback functions provided to the
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* ajaxSubmit() and ajaxForm() methods.
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*/
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$.fn.formToArray = function(semantic) {
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var a = [];
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if (this.length == 0) return a;
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var form = this[0];
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var els = semantic ? form.getElementsByTagName('*') : form.elements;
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if (!els) return a;
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for(var i=0, max=els.length; i < max; i++) {
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var el = els[i];
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var n = el.name;
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if (!n) continue;
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if (semantic && form.clk && el.type == "image") {
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// handle image inputs on the fly when semantic == true
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if(!el.disabled && form.clk == el)
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a.push({name: n+'.x', value: form.clk_x}, {name: n+'.y', value: form.clk_y});
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continue;
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}
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var v = $.fieldValue(el, true);
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if (v && v.constructor == Array) {
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for(var j=0, jmax=v.length; j < jmax; j++)
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a.push({name: n, value: v[j]});
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}
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else if (v !== null && typeof v != 'undefined')
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a.push({name: n, value: v});
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}
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if (!semantic && form.clk) {
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// input type=='image' are not found in elements array! handle them here
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var inputs = form.getElementsByTagName("input");
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for(var i=0, max=inputs.length; i < max; i++) {
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var input = inputs[i];
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var n = input.name;
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if(n && !input.disabled && input.type == "image" && form.clk == input)
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a.push({name: n+'.x', value: form.clk_x}, {name: n+'.y', value: form.clk_y});
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}
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}
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return a;
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};
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/**
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* Serializes form data into a 'submittable' string. This method will return a string
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* in the format: name1=value1&name2=value2
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*/
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$.fn.formSerialize = function(semantic) {
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//hand off to jQuery.param for proper encoding
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return $.param(this.formToArray(semantic));
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};
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/**
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* Serializes all field elements in the jQuery object into a query string.
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* This method will return a string in the format: name1=value1&name2=value2
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*/
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$.fn.fieldSerialize = function(successful) {
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var a = [];
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this.each(function() {
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var n = this.name;
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if (!n) return;
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var v = $.fieldValue(this, successful);
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if (v && v.constructor == Array) {
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for (var i=0,max=v.length; i < max; i++)
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a.push({name: n, value: v[i]});
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}
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else if (v !== null && typeof v != 'undefined')
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a.push({name: this.name, value: v});
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});
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//hand off to jQuery.param for proper encoding
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return $.param(a);
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};
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/**
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* Returns the value(s) of the element in the matched set. For example, consider the following form:
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*
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* <form><fieldset>
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* <input name="A" type="text" />
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* <input name="A" type="text" />
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* <input name="B" type="checkbox" value="B1" />
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* <input name="B" type="checkbox" value="B2"/>
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* <input name="C" type="radio" value="C1" />
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* <input name="C" type="radio" value="C2" />
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* </fieldset></form>
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*
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* var v = $(':text').fieldValue();
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* // if no values are entered into the text inputs
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* v == ['','']
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* // if values entered into the text inputs are 'foo' and 'bar'
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* v == ['foo','bar']
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*
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* var v = $(':checkbox').fieldValue();
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* // if neither checkbox is checked
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* v === undefined
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* // if both checkboxes are checked
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* v == ['B1', 'B2']
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*
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* var v = $(':radio').fieldValue();
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* // if neither radio is checked
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* v === undefined
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* // if first radio is checked
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* v == ['C1']
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*
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* The successful argument controls whether or not the field element must be 'successful'
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* (per http://www.w3.org/TR/html4/interact/forms.html#successful-controls).
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* The default value of the successful argument is true. If this value is false the value(s)
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* for each element is returned.
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*
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* Note: This method *always* returns an array. If no valid value can be determined the
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|
* array will be empty, otherwise it will contain one or more values.
|
|
*/
|
|
$.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;
|
|
};
|
|
|
|
/**
|
|
* Returns the value of the field element.
|
|
*/
|
|
$.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 = op.value;
|
|
if (!v) // extra pain for IE...
|
|
v = (op.attributes && op.attributes['value'] && !(op.attributes['value'].specified)) ? op.text : op.value;
|
|
if (one) return v;
|
|
a.push(v);
|
|
}
|
|
}
|
|
return a;
|
|
}
|
|
return el.value;
|
|
};
|
|
|
|
/**
|
|
* Clears the form data. Takes the following actions on the form's input fields:
|
|
* - input text fields will have their 'value' property set to the empty string
|
|
* - select elements will have their 'selectedIndex' property set to -1
|
|
* - checkbox and radio inputs will have their 'checked' property set to false
|
|
* - inputs of type submit, button, reset, and hidden will *not* be effected
|
|
* - button elements will *not* be effected
|
|
*/
|
|
$.fn.clearForm = function() {
|
|
return this.each(function() {
|
|
$('input,select,textarea', this).clearFields();
|
|
});
|
|
};
|
|
|
|
/**
|
|
* Clears the selected form elements.
|
|
*/
|
|
$.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;
|
|
});
|
|
};
|
|
|
|
/**
|
|
* Resets the form data. Causes all form elements to be reset to their original value.
|
|
*/
|
|
$.fn.resetForm = function() {
|
|
return this.each(function() {
|
|
// guard against an input with the name of 'reset'
|
|
// note that IE reports the reset function as an 'object'
|
|
if (typeof this.reset == 'function' || (typeof this.reset == 'object' && !this.reset.nodeType))
|
|
this.reset();
|
|
});
|
|
};
|
|
|
|
/**
|
|
* Enables or disables any matching elements.
|
|
*/
|
|
$.fn.enable = function(b) {
|
|
if (b == undefined) b = true;
|
|
return this.each(function() {
|
|
this.disabled = !b
|
|
});
|
|
};
|
|
|
|
/**
|
|
* Checks/unchecks any matching checkboxes or radio buttons and
|
|
* selects/deselects and matching option elements.
|
|
*/
|
|
$.fn.selected = 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') {
|
|
// deselect all other options
|
|
$sel.find('option').selected(false);
|
|
}
|
|
this.selected = select;
|
|
}
|
|
});
|
|
};
|
|
|
|
// helper fn for console logging
|
|
// set $.fn.ajaxSubmit.debug to true to enable debug logging
|
|
function log() {
|
|
if ($.fn.ajaxSubmit.debug && window.console && window.console.log)
|
|
window.console.log('[jquery.form] ' + Array.prototype.join.call(arguments,''));
|
|
};
|
|
|
|
})(jQuery);
|