text: /*
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.
  * The ASF licenses this file to You under the Apache License, Version 2.0
  * (the "License"); you may not use this file except in compliance with
  * the License.  You may obtain a copy of the License at
  *
  *     http://www.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
  /**
   * Unobtrusive scripting adapter for jQuery
   *
   * Requires jQuery 1.4.4 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 allows the form to submit through standard means.
   *
   * The `ajax:aborted:file` event allows you to bind your own handler to process the form submission however you wish.
   *
   * Ex:
   *     $('form').live('ajax:aborted:file', function(event, elements){
   *       // Implement own remote file-transfer handler here for non-blank file inputs passed in `elements`.
   *       // Returning false in this handler tells rails.js to disallow standard form submission
   *       return false;
   *     });
   *
   * The `ajax:aborted:file` event is fired when a file-type input is detected with a non-blank value.
   *
   * 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.
   *
   * Required fields in rails.js
   * ===========================
   *
   * If any blank required inputs (required="required") are detected in the remote form, the whole form submission
   * is canceled. Note that this is unlike file inputs, which still allow standard (non-AJAX) form submission.
   *
   * The `ajax:aborted:required` event allows you to bind your own handler to inform the user of blank required inputs.
   *
   * !! Note that Opera does not fire the form's submit event if there are blank required inputs, so this event may never
   *    get fired in Opera. This event is what causes other browsers to exhibit the same submit-aborting behavior.
   *
   * Ex:
   *     $('form').live('ajax:aborted:required', function(event, elements){
   *       // Returning false in this handler tells rails.js to submit the form anyway.
   *       // The blank required inputs are passed to this function in `elements`.
   *       return ! confirm("Would you like to submit the form with missing info?");
   *     });
   */
  
  (function($, undefined) {
    // Shorthand to make it a little easier to call public rails functions from within rails.js
    var rails;
  
    $.rails = rails = {
      // Link elements bound by jquery-ujs
      linkClickSelector: 'a[data-confirm], a[data-method], a[data-remote]',
  
  		// Select elements bound by jquery-ujs
  		selectChangeSelector: 'select[data-remote]',
  
      // Form elements bound by jquery-ujs
      formSubmitSelector: 'form',
  
      // Form input elements bound by jquery-ujs
      formInputClickSelector: 'form input[type=submit], form input[type=image], form button[type=submit], form button:not([type])',
  
      // Form input elements disabled during form submission
      disableSelector: 'input[data-disable-with], button[data-disable-with], textarea[data-disable-with]',
  
      // Form input elements re-enabled after form submission
      enableSelector: 'input[data-disable-with]:disabled, button[data-disable-with]:disabled, textarea[data-disable-with]:disabled',
  
      // Form required input elements
      requiredInputSelector: 'input[name][required]:not([disabled]),textarea[name][required]:not([disabled])',
  
      // Form file input elements
      fileInputSelector: 'input:file',
  
      // Make sure that every Ajax request sends the CSRF token
      CSRFProtection: function(xhr) {
        var token = $('meta[name="csrf-token"]').attr('content');
        if (token) xhr.setRequestHeader('X-CSRF-Token', token);
      },
  
      // Triggers an event on an element and returns false if the event result is false
      fire: function(obj, name, data) {
        var event = $.Event(name);
        obj.trigger(event, data);
        return event.result !== false;
      },
  
      // Default confirm dialog, may be overridden with custom confirm dialog in $.rails.confirm
      confirm: function(message) {
        return confirm(message);
      },
  
      // Default ajax function, may be overridden with custom function in $.rails.ajax
      ajax: function(options) {
        return $.ajax(options);
      },
  
      // Submits "remote" forms and links with ajax
      handleRemote: function(element) {
        var method, url, data,
          crossDomain = element.data('cross-domain') || null,
          dataType = element.data('type') || ($.ajaxSettings && $.ajaxSettings.dataType);
  
        if (rails.fire(element, 'ajax:before')) {
  
          if (element.is('form')) {
            method = element.attr('method');
            url = element.attr('action');
            data = element.serializeArray();
            // memoized value from clicked submit button
            var button = element.data('ujs:submit-button');
            if (button) {
              data.push(button);
              element.data('ujs:submit-button', null);
            }
          } else if (element.is('select')) {
            method = element.data('method');
            url = element.data('url');
  					data = element.serialize();
  					if (element.data('params')) data = data + "&" + element.data('params'); 
          } else {
             method = element.data('method');
             url = element.attr('href');
             data = element.data('params') || null; 
          }
  
          options = {
            type: method || 'GET', data: data, dataType: dataType, crossDomain: crossDomain,
            // stopping the "ajax:beforeSend" event will cancel the ajax request
            beforeSend: function(xhr, settings) {
              if (settings.dataType === undefined) {
                xhr.setRequestHeader('accept', '*/*;q=0.5, ' + settings.accepts.script);
              }
              return rails.fire(element, 'ajax:beforeSend', [xhr, settings]);
            },
            success: function(data, status, xhr) {
              element.trigger('ajax:success', [data, status, xhr]);
            },
            complete: function(xhr, status) {
              element.trigger('ajax:complete', [xhr, status]);
            },
            error: function(xhr, status, error) {
              element.trigger('ajax:error', [xhr, status, error]);
            }
          };
          // Do not pass url to `ajax` options if blank
          if (url) { $.extend(options, { url: url }); }
  
          rails.ajax(options);
        }
      },
  
      // Handles "data-method" on links such as:
      // <a href="/users/5" data-method="delete" rel="nofollow" data-confirm="Are you sure?">Delete</a>
      handleMethod: function(link) {
        var href = link.attr('href'),
          method = link.data('method'),
          csrf_token = $('meta[name=csrf-token]').attr('content'),
          csrf_param = $('meta[name=csrf-param]').attr('content'),
          form = $('<form method="post" action="' + href + '"></form>'),
          metadata_input = '<input name="_method" value="' + method + '" type="hidden" />';
  
        if (csrf_param !== undefined && csrf_token !== undefined) {
          metadata_input += '<input name="' + csrf_param + '" value="' + csrf_token + '" type="hidden" />';
        }
  
        form.hide().append(metadata_input).appendTo('body');
        form.submit();
      },
  
      /* Disables form elements:
        - Caches element value in 'ujs:enable-with' data store
        - Replaces element text with value of 'data-disable-with' attribute
        - Adds disabled=disabled attribute
      */
      disableFormElements: function(form) {
        form.find(rails.disableSelector).each(function() {
          var element = $(this), method = element.is('button') ? 'html' : 'val';
          element.data('ujs:enable-with', element[method]());
          element[method](element.data('disable-with'));
          element.attr('disabled', 'disabled');
        });
      },
  
      /* Re-enables disabled form elements:
        - Replaces element text with cached value from 'ujs:enable-with' data store (created in `disableFormElements`)
        - Removes disabled attribute
      */
      enableFormElements: function(form) {
        form.find(rails.enableSelector).each(function() {
          var element = $(this), method = element.is('button') ? 'html' : 'val';
          if (element.data('ujs:enable-with')) element[method](element.data('ujs:enable-with'));
          element.removeAttr('disabled');
        });
      },
  
     /* For 'data-confirm' attribute:
        - Fires `confirm` event
        - Shows the confirmation dialog
        - Fires the `confirm:complete` event
  
        Returns `true` if no function stops the chain and user chose yes; `false` otherwise.
        Attaching a handler to the element's `confirm` event that returns a `falsy` value cancels the confirmation dialog.
        Attaching a handler to the element's `confirm:complete` event that returns a `falsy` value makes this function
        return false. The `confirm:complete` event is fired whether or not the user answered true or false to the dialog.
     */
      allowAction: function(element) {
        var message = element.data('confirm'),
            answer = false, callback;
        if (!message) { return true; }
  
        if (rails.fire(element, 'confirm')) {
          answer = rails.confirm(message);
          callback = rails.fire(element, 'confirm:complete', [answer]);
        }
        return answer && callback;
      },
  
      // Helper function which checks for blank inputs in a form that match the specified CSS selector
      blankInputs: function(form, specifiedSelector, nonBlank) {
        var inputs = $(), input,
          selector = specifiedSelector || 'input,textarea';
        form.find(selector).each(function() {
          input = $(this);
          // Collect non-blank inputs if nonBlank option is true, otherwise, collect blank inputs
          if (nonBlank ? input.val() : !input.val()) {
            inputs = inputs.add(input);
          }
        });
        return inputs.length ? inputs : false;
      },
  
      // Helper function which checks for non-blank inputs in a form that match the specified CSS selector
      nonBlankInputs: function(form, specifiedSelector) {
        return rails.blankInputs(form, specifiedSelector, true); // true specifies nonBlank
      },
  
      // Helper function, needed to provide consistent behavior in IE
      stopEverything: function(e) {
        $(e.target).trigger('ujs:everythingStopped');
        e.stopImmediatePropagation();
        return false;
      },
  
      // find all the submit events directly bound to the form and
      // manually invoke them. If anyone returns false then stop the loop
      callFormSubmitBindings: function(form) {
        var events = form.data('events'), continuePropagation = true;
        if (events !== undefined && events['submit'] !== undefined) {
          $.each(events['submit'], function(i, obj){
            if (typeof obj.handler === 'function') return continuePropagation = obj.handler(obj.data);
          });
        }
        return continuePropagation;
      }
    };
  
    // ajaxPrefilter is a jQuery 1.5 feature
    if ('ajaxPrefilter' in $) {
      $.ajaxPrefilter(function(options, originalOptions, xhr){ if ( !options.crossDomain ) { rails.CSRFProtection(xhr); }});
    } else {
      $(document).ajaxSend(function(e, xhr, options){ if ( !options.crossDomain ) { rails.CSRFProtection(xhr); }});
    }
  
    $(rails.linkClickSelector).live('click.rails', function(e) {
      var link = $(this);
      if (!rails.allowAction(link)) return rails.stopEverything(e);
  
      if (link.data('remote') !== undefined) {
        rails.handleRemote(link);
        return false;
      } else if (link.data('method')) {
        rails.handleMethod(link);
        return false;
      }
    });
  
  	$(rails.selectChangeSelector).live('change.rails', function(e) {
      var link = $(this);
      if (!rails.allowAction(link)) return rails.stopEverything(e);
  
      rails.handleRemote(link);
      return false;
    });	
  
    $(rails.formSubmitSelector).live('submit.rails', function(e) {
      var form = $(this),
        remote = form.data('remote') !== undefined,
        blankRequiredInputs = rails.blankInputs(form, rails.requiredInputSelector),
        nonBlankFileInputs = rails.nonBlankInputs(form, rails.fileInputSelector);
  
      if (!rails.allowAction(form)) return rails.stopEverything(e);
  
      // skip other logic when required values are missing or file upload is present
      if (blankRequiredInputs && rails.fire(form, 'ajax:aborted:required', [blankRequiredInputs])) {
        return rails.stopEverything(e);
      }
  
      if (remote) {
        if (nonBlankFileInputs) {
          return rails.fire(form, 'ajax:aborted:file', [nonBlankFileInputs]);
        }
  
        // If browser does not support submit bubbling, then this live-binding will be called before direct
        // bindings. Therefore, we should directly call any direct bindings before remotely submitting form.
        if (!$.support.submitBubbles && rails.callFormSubmitBindings(form) === false) return rails.stopEverything(e);
  
        rails.handleRemote(form);
        return false;
      } else {
        // slight timeout so that the submit button gets properly serialized
        setTimeout(function(){ rails.disableFormElements(form); }, 13);
      }
    });
  
    $(rails.formInputClickSelector).live('click.rails', function(event) {
      var button = $(this);
  
      if (!rails.allowAction(button)) return rails.stopEverything(event);
  
      // register the pressed submit button
      var name = button.attr('name'),
        data = name ? {name:name, value:button.val()} : null;
  
      button.closest('form').data('ujs:submit-button', data);
    });
  
    $(rails.formSubmitSelector).live('ajax:beforeSend.rails', function(event) {
      if (this == event.target) rails.disableFormElements($(this));
    });
  
    $(rails.formSubmitSelector).live('ajax:complete.rails', function(event) {
      if (this == event.target) rails.enableFormElements($(this));
    });
  
  })( jQuery );
  