/**
 * Unobtrusive scripting adapter for jQuery
 *
 * Requires jQuery 1.4.3 or later.
 * https://github.com/rails/jquery-ujs

 * Uploading file using rails.js
 *
 * By default, browsers do not allow files to be uploaded via AJAX. As a result, if there are any non-blank file fields
 * in the remote form, this adapter aborts the AJAX submission and submits the form through standard means.
 *
 * When AJAX submission is aborted then event `ajax:aborted:file` is fired and this allows you to bind your own
 * handler to process the form submission the way you want.
 *
 * For example if you want remote form submission to be cancelled and you do not want to submit the form through
 * standard means then you can write following handler.
 *
 * Ex:
 *     $('form').live('ajax:aborted:file', function(){
 *       // Implement own remote file-transfer handler here.
 *       return false;
 *     });
 *
 * The `ajax:aborted:file` event is fired when a form is submitted and both conditions are met:
 *   a) file-type input field is detected, and
 *   b) the value of the input:file field is not blank.
 *
 * Third-party tools can use this hook to detect when an AJAX file upload is attempted, and then use
 * techniques like the iframe method to upload the file instead.
 *
 * Similarly, rails.js aborts AJAX form submissions if any non-blank input[required] fields are detected,
 * providing the `ajax:aborted:required` hook.
 * Unlike file uploads, however, blank required input fields cancel the whole form submission by default.
 *
 * The default behavior of aborting the remote form submission when required inputs are missing, may be
 * changed (thereby submitting the form via AJAX anyway) by binding a handler function that returns
 * false to the `ajax:aborted:required` hook.
 *
 * Ex:
 *     $('form').live('ajax:aborted:required', function(){
 *       return ! confirm("Would you like to submit the form with missing info?");
 *     });
 */
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