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/*!
 * # Semantic UI 2.1.7 - Form Validation
 * http://github.com/semantic-org/semantic-ui/
 *
 *
 * Copyright 2015 Contributors
 * Released under the MIT license
 * http://opensource.org/licenses/MIT
 *
 */

;(function ( $, window, document, undefined ) {

"use strict";

$.fn.form = function(parameters) {
  var
    $allModules      = $(this),
    moduleSelector   = $allModules.selector || '',

    time             = new Date().getTime(),
    performance      = [],

    query            = arguments[0],
    legacyParameters = arguments[1],
    methodInvoked    = (typeof query == 'string'),
    queryArguments   = [].slice.call(arguments, 1),
    returnedValue
  ;
  $allModules
    .each(function() {
      var
        $module     = $(this),
        element     = this,

        formErrors  = [],
        keyHeldDown = false,

        // set at run-time
        $field,
        $group,
        $message,
        $prompt,
        $submit,
        $clear,
        $reset,

        settings,
        validation,

        metadata,
        selector,
        className,
        error,

        namespace,
        moduleNamespace,
        eventNamespace,

        instance,
        module
      ;

      module      = {

        initialize: function() {

          // settings grabbed at run time
          module.get.settings();
          if(methodInvoked) {
            if(instance === undefined) {
              module.instantiate();
            }
            module.invoke(query);
          }
          else {
            module.verbose('Initializing form validation', $module, settings);
            module.bindEvents();
            module.set.defaults();
            module.instantiate();
          }
        },

        instantiate: function() {
          module.verbose('Storing instance of module', module);
          instance = module;
          $module
            .data(moduleNamespace, module)
          ;
        },

        destroy: function() {
          module.verbose('Destroying previous module', instance);
          module.removeEvents();
          $module
            .removeData(moduleNamespace)
          ;
        },

        refresh: function() {
          module.verbose('Refreshing selector cache');
          $field      = $module.find(selector.field);
          $group      = $module.find(selector.group);
          $message    = $module.find(selector.message);
          $prompt     = $module.find(selector.prompt);

          $submit     = $module.find(selector.submit);
          $clear      = $module.find(selector.clear);
          $reset      = $module.find(selector.reset);
        },

        submit: function() {
          module.verbose('Submitting form', $module);
          $module
            .submit()
          ;
        },

        attachEvents: function(selector, action) {
          action = action || 'submit';
          $(selector)
            .on('click' + eventNamespace, function(event) {
              module[action]();
              event.preventDefault();
            })
          ;
        },

        bindEvents: function() {
          module.verbose('Attaching form events');
          $module
            .on('submit' + eventNamespace, module.validate.form)
            .on('blur'   + eventNamespace, selector.field, module.event.field.blur)
            .on('click'  + eventNamespace, selector.submit, module.submit)
            .on('click'  + eventNamespace, selector.reset, module.reset)
            .on('click'  + eventNamespace, selector.clear, module.clear)
          ;
          if(settings.keyboardShortcuts) {
            $module
              .on('keydown' + eventNamespace, selector.field, module.event.field.keydown)
            ;
          }
          $field
            .each(function() {
              var
                $input     = $(this),
                type       = $input.prop('type'),
                inputEvent = module.get.changeEvent(type, $input)
              ;
              $(this)
                .on(inputEvent + eventNamespace, module.event.field.change)
              ;
            })
          ;
        },

        clear: function() {
          $field
            .each(function () {
              var
                $field       = $(this),
                $element     = $field.parent(),
                $fieldGroup  = $field.closest($group),
                $prompt      = $fieldGroup.find(selector.prompt),
                defaultValue = $field.data(metadata.defaultValue) || '',
                isCheckbox   = $element.is(selector.uiCheckbox),
                isDropdown   = $element.is(selector.uiDropdown),
                isErrored    = $fieldGroup.hasClass(className.error)
              ;
              if(isErrored) {
                module.verbose('Resetting error on field', $fieldGroup);
                $fieldGroup.removeClass(className.error);
                $prompt.remove();
              }
              if(isDropdown) {
                module.verbose('Resetting dropdown value', $element, defaultValue);
                $element.dropdown('clear');
              }
              else if(isCheckbox) {
                $field.prop('checked', false);
              }
              else {
                module.verbose('Resetting field value', $field, defaultValue);
                $field.val('');
              }
            })
          ;
        },

        reset: function() {
          $field
            .each(function () {
              var
                $field       = $(this),
                $element     = $field.parent(),
                $fieldGroup  = $field.closest($group),
                $prompt      = $fieldGroup.find(selector.prompt),
                defaultValue = $field.data(metadata.defaultValue),
                isCheckbox   = $element.is(selector.uiCheckbox),
                isDropdown   = $element.is(selector.uiDropdown),
                isErrored    = $fieldGroup.hasClass(className.error)
              ;
              if(defaultValue === undefined) {
                return;
              }
              if(isErrored) {
                module.verbose('Resetting error on field', $fieldGroup);
                $fieldGroup.removeClass(className.error);
                $prompt.remove();
              }
              if(isDropdown) {
                module.verbose('Resetting dropdown value', $element, defaultValue);
                $element.dropdown('restore defaults');
              }
              else if(isCheckbox) {
                module.verbose('Resetting checkbox value', $element, defaultValue);
                $field.prop('checked', defaultValue);
              }
              else {
                module.verbose('Resetting field value', $field, defaultValue);
                $field.val(defaultValue);
              }
            })
          ;
        },

        is: {
          bracketedRule: function(rule) {
            return (rule.type && rule.type.match(settings.regExp.bracket));
          },
          valid: function() {
            var
              allValid = true
            ;
            module.verbose('Checking if form is valid');
            $.each(validation, function(fieldName, field) {
              if( !( module.validate.field(field, fieldName) ) ) {
                allValid = false;
              }
            });
            return allValid;
          }
        },

        removeEvents: function() {
          $module
            .off(eventNamespace)
          ;
          $field
            .off(eventNamespace)
          ;
          $submit
            .off(eventNamespace)
          ;
          $field
            .off(eventNamespace)
          ;
        },

        event: {
          field: {
            keydown: function(event) {
              var
                $field  = $(this),
                key     = event.which,
                keyCode = {
                  enter  : 13,
                  escape : 27
                }
              ;
              if( key == keyCode.escape) {
                module.verbose('Escape key pressed blurring field');
                $field
                  .blur()
                ;
              }
              if(!event.ctrlKey && key == keyCode.enter && $field.is(selector.input) && $field.not(selector.checkbox).length > 0 ) {
                if(!keyHeldDown) {
                  $field
                    .one('keyup' + eventNamespace, module.event.field.keyup)
                  ;
                  module.submit();
                  module.debug('Enter pressed on input submitting form');
                }
                keyHeldDown = true;
              }
            },
            keyup: function() {
              keyHeldDown = false;
            },
            blur: function(event) {
              var
                $field          = $(this),
                $fieldGroup     = $field.closest($group),
                validationRules = module.get.validation($field)
              ;
              if( $fieldGroup.hasClass(className.error) ) {
                module.debug('Revalidating field', $field, validationRules);
                module.validate.form.call(module, event, true);
              }
              else if(settings.on == 'blur' || settings.on == 'change') {
                if(validationRules) {
                  module.validate.field( validationRules );
                }
              }
            },
            change: function(event) {
              var
                $field      = $(this),
                $fieldGroup = $field.closest($group)
              ;
              if(settings.on == 'change' || ( $fieldGroup.hasClass(className.error) && settings.revalidate) ) {
                clearTimeout(module.timer);
                module.timer = setTimeout(function() {
                  module.debug('Revalidating field', $field,  module.get.validation($field));
                  module.validate.form.call(module, event, true);
                }, settings.delay);
              }
            }
          }

        },

        get: {
          ancillaryValue: function(rule) {
            if(!rule.type || !module.is.bracketedRule(rule)) {
              return false;
            }
            return rule.type.match(settings.regExp.bracket)[1] + '';
          },
          ruleName: function(rule) {
            if( module.is.bracketedRule(rule) ) {
              return rule.type.replace(rule.type.match(settings.regExp.bracket)[0], '');
            }
            return rule.type;
          },
          changeEvent: function(type, $input) {
            if(type == 'checkbox' || type == 'radio' || type == 'hidden' || $input.is('select')) {
              return 'change';
            }
            else {
              return module.get.inputEvent();
            }
          },
          inputEvent: function() {
            return (document.createElement('input').oninput !== undefined)
              ? 'input'
              : (document.createElement('input').onpropertychange !== undefined)
                ? 'propertychange'
                : 'keyup'
            ;
          },
          prompt: function(rule, field) {
            var
              ruleName      = module.get.ruleName(rule),
              ancillary     = module.get.ancillaryValue(rule),
              prompt        = rule.prompt || settings.prompt[ruleName] || settings.text.unspecifiedRule,
              requiresValue = (prompt.search('{value}') !== -1),
              requiresName  = (prompt.search('{name}') !== -1),
              $label,
              $field,
              name
            ;
            if(requiresName || requiresValue) {
              $field = module.get.field(field.identifier);
            }
            if(requiresValue) {
              prompt = prompt.replace('{value}', $field.val());
            }
            if(requiresName) {
              $label = $field.closest(selector.group).find('label').eq(0);
              name = ($label.size() == 1)
                ? $label.text()
                : $field.prop('placeholder') || settings.text.unspecifiedField
              ;
              prompt = prompt.replace('{name}', name);
            }
            prompt = prompt.replace('{identifier}', field.identifier);
            prompt = prompt.replace('{ruleValue}', ancillary);
            if(!rule.prompt) {
              module.verbose('Using default validation prompt for type', prompt, ruleName);
            }
            return prompt;
          },
          settings: function() {
            if($.isPlainObject(parameters)) {
              var
                keys     = Object.keys(parameters),
                isLegacySettings = (keys.length > 0)
                  ? (parameters[keys[0]].identifier !== undefined && parameters[keys[0]].rules !== undefined)
                  : false,
                ruleKeys
              ;
              if(isLegacySettings) {
                // 1.x (ducktyped)
                settings   = $.extend(true, {}, $.fn.form.settings, legacyParameters);
                validation = $.extend({}, $.fn.form.settings.defaults, parameters);
                module.error(settings.error.oldSyntax, element);
                module.verbose('Extending settings from legacy parameters', validation, settings);
              }
              else {
                // 2.x
                if(parameters.fields) {
                  ruleKeys = Object.keys(parameters.fields);
                  if( typeof parameters.fields[ruleKeys[0]] == 'string' || $.isArray(parameters.fields[ruleKeys[0]]) ) {
                    $.each(parameters.fields, function(name, rules) {
                      if(typeof rules == 'string') {
                        rules = [rules];
                      }
                      parameters.fields[name] = {
                        rules: []
                      };
                      $.each(rules, function(index, rule) {
                        parameters.fields[name].rules.push({ type: rule });
                      });
                    });
                  }
                }

                settings   = $.extend(true, {}, $.fn.form.settings, parameters);
                validation = $.extend({}, $.fn.form.settings.defaults, settings.fields);
                module.verbose('Extending settings', validation, settings);
              }
            }
            else {
              settings   = $.fn.form.settings;
              validation = $.fn.form.settings.defaults;
              module.verbose('Using default form validation', validation, settings);
            }

            // shorthand
            namespace       = settings.namespace;
            metadata        = settings.metadata;
            selector        = settings.selector;
            className       = settings.className;
            error           = settings.error;
            moduleNamespace = 'module-' + namespace;
            eventNamespace  = '.' + namespace;

            // grab instance
            instance = $module.data(moduleNamespace);

            // refresh selector cache
            module.refresh();
          },
          field: function(identifier) {
            module.verbose('Finding field with identifier', identifier);
            if( $field.filter('#' + identifier).length > 0 ) {
              return $field.filter('#' + identifier);
            }
            else if( $field.filter('[name="' + identifier +'"]').length > 0 ) {
              return $field.filter('[name="' + identifier +'"]');
            }
            else if( $field.filter('[name="' + identifier +'[]"]').length > 0 ) {
              return $field.filter('[name="' + identifier +'[]"]');
            }
            else if( $field.filter('[data-' + metadata.validate + '="'+ identifier +'"]').length > 0 ) {
              return $field.filter('[data-' + metadata.validate + '="'+ identifier +'"]');
            }
            return $('<input/>');
          },
          fields: function(fields) {
            var
              $fields = $()
            ;
            $.each(fields, function(index, name) {
              $fields = $fields.add( module.get.field(name) );
            });
            return $fields;
          },
          validation: function($field) {
            var
              fieldValidation,
              identifier
            ;
            if(!validation) {
              return false;
            }
            $.each(validation, function(fieldName, field) {
              identifier = field.identifier || fieldName;
              if( module.get.field(identifier)[0] == $field[0] ) {
                field.identifier = identifier;
                fieldValidation = field;
              }
            });
            return fieldValidation || false;
          },
          value: function (field) {
            var
              fields = [],
              results
            ;
            fields.push(field);
            results = module.get.values.call(element, fields);
            return results[field];
          },
          values: function (fields) {
            var
              $fields = $.isArray(fields)
                ? module.get.fields(fields)
                : $field,
              values = {}
            ;
            $fields.each(function(index, field) {
              var
                $field     = $(field),
                type       = $field.prop('type'),
                name       = $field.prop('name'),
                value      = $field.val(),
                isCheckbox = $field.is(selector.checkbox),
                isRadio    = $field.is(selector.radio),
                isMultiple = (name.indexOf('[]') !== -1),
                isChecked  = (isCheckbox)
                  ? $field.is(':checked')
                  : false
              ;
              if(name) {
                if(isMultiple) {
                  name = name.replace('[]', '');
                  if(!values[name]) {
                    values[name] = [];
                  }
                  if(isCheckbox) {
                    if(isChecked) {
                      values[name].push(value || true);
                    }
                    else {
                      values[name].push(false);
                    }
                  }
                  else {
                    values[name].push(value);
                  }
                }
                else {
                  if(isRadio) {
                    if(isChecked) {
                      values[name] = value;
                    }
                  }
                  else if(isCheckbox) {
                    if(isChecked) {
                      values[name] = value || true;
                    }
                    else {
                      values[name] = false;
                    }
                  }
                  else {
                    values[name] = value;
                  }
                }
              }
            });
            return values;
          }
        },

        has: {

          field: function(identifier) {
            module.verbose('Checking for existence of a field with identifier', identifier);
            if(typeof identifier !== 'string') {
              module.error(error.identifier, identifier);
            }
            if( $field.filter('#' + identifier).length > 0 ) {
              return true;
            }
            else if( $field.filter('[name="' + identifier +'"]').length > 0 ) {
              return true;
            }
            else if( $field.filter('[data-' + metadata.validate + '="'+ identifier +'"]').length > 0 ) {
              return true;
            }
            return false;
          }

        },

        add: {
          prompt: function(identifier, errors) {
            var
              $field       = module.get.field(identifier),
              $fieldGroup  = $field.closest($group),
              $prompt      = $fieldGroup.children(selector.prompt),
              promptExists = ($prompt.length !== 0)
            ;
            errors = (typeof errors == 'string')
              ? [errors]
              : errors
            ;
            module.verbose('Adding field error state', identifier);
            $fieldGroup
              .addClass(className.error)
            ;
            if(settings.inline) {
              if(!promptExists) {
                $prompt = settings.templates.prompt(errors);
                $prompt
                  .appendTo($fieldGroup)
                ;
              }
              $prompt
                .html(errors[0])
              ;
              if(!promptExists) {
                if(settings.transition && $.fn.transition !== undefined && $module.transition('is supported')) {
                  module.verbose('Displaying error with css transition', settings.transition);
                  $prompt.transition(settings.transition + ' in', settings.duration);
                }
                else {
                  module.verbose('Displaying error with fallback javascript animation');
                  $prompt
                    .fadeIn(settings.duration)
                  ;
                }
              }
              else {
                module.verbose('Inline errors are disabled, no inline error added', identifier);
              }
            }
          },
          errors: function(errors) {
            module.debug('Adding form error messages', errors);
            module.set.error();
            $message
              .html( settings.templates.error(errors) )
            ;
          }
        },

        remove: {
          prompt: function(identifier) {
            var
              $field      = module.get.field(identifier),
              $fieldGroup = $field.closest($group),
              $prompt     = $fieldGroup.children(selector.prompt)
            ;
            $fieldGroup
              .removeClass(className.error)
            ;
            if(settings.inline && $prompt.is(':visible')) {
              module.verbose('Removing prompt for field', identifier);
              if(settings.transition && $.fn.transition !== undefined && $module.transition('is supported')) {
                $prompt.transition(settings.transition + ' out', settings.duration, function() {
                  $prompt.remove();
                });
              }
              else {
                $prompt
                  .fadeOut(settings.duration, function(){
                    $prompt.remove();
                  })
                ;
              }
            }
          }
        },

        set: {
          success: function() {
            $module
              .removeClass(className.error)
              .addClass(className.success)
            ;
          },
          defaults: function () {
            $field
              .each(function () {
                var
                  $field     = $(this),
                  isCheckbox = ($field.filter(selector.checkbox).length > 0),
                  value      = (isCheckbox)
                    ? $field.is(':checked')
                    : $field.val()
                ;
                $field.data(metadata.defaultValue, value);
              })
            ;
          },
          error: function() {
            $module
              .removeClass(className.success)
              .addClass(className.error)
            ;
          },
          value: function (field, value) {
            var
              fields = {}
            ;
            fields[field] = value;
            return module.set.values.call(element, fields);
          },
          values: function (fields) {
            if($.isEmptyObject(fields)) {
              return;
            }
            $.each(fields, function(key, value) {
              var
                $field      = module.get.field(key),
                $element    = $field.parent(),
                isMultiple  = $.isArray(value),
                isCheckbox  = $element.is(selector.uiCheckbox),
                isDropdown  = $element.is(selector.uiDropdown),
                isRadio     = ($field.is(selector.radio) && isCheckbox),
                fieldExists = ($field.length > 0),
                $multipleField
              ;
              if(fieldExists) {
                if(isMultiple && isCheckbox) {
                  module.verbose('Selecting multiple', value, $field);
                  $element.checkbox('uncheck');
                  $.each(value, function(index, value) {
                    $multipleField = $field.filter('[value="' + value + '"]');
                    $element       = $multipleField.parent();
                    if($multipleField.length > 0) {
                      $element.checkbox('check');
                    }
                  });
                }
                else if(isRadio) {
                  module.verbose('Selecting radio value', value, $field);
                  $field.filter('[value="' + value + '"]')
                    .parent(selector.uiCheckbox)
                      .checkbox('check')
                  ;
                }
                else if(isCheckbox) {
                  module.verbose('Setting checkbox value', value, $element);
                  if(value === true) {
                    $element.checkbox('check');
                  }
                  else {
                    $element.checkbox('uncheck');
                  }
                }
                else if(isDropdown) {
                  module.verbose('Setting dropdown value', value, $element);
                  $element.dropdown('set selected', value);
                }
                else {
                  module.verbose('Setting field value', value, $field);
                  $field.val(value);
                }
              }
            });
          }
        },

        validate: {

          form: function(event, ignoreCallbacks) {
            var
              values = module.get.values(),
              apiRequest
            ;

            // input keydown event will fire submit repeatedly by browser default
            if(keyHeldDown) {
              return false;
            }

            // reset errors
            formErrors = [];
            if( module.is.valid() ) {
              module.debug('Form has no validation errors, submitting');
              module.set.success();
              if(ignoreCallbacks !== true) {
                return settings.onSuccess.call(element, event, values);
              }
            }
            else {
              module.debug('Form has errors');
              module.set.error();
              if(!settings.inline) {
                module.add.errors(formErrors);
              }
              // prevent ajax submit
              if($module.data('moduleApi') !== undefined) {
                event.stopImmediatePropagation();
              }
              if(ignoreCallbacks !== true) {
                return settings.onFailure.call(element, formErrors, values);
              }
            }
          },

          // takes a validation object and returns whether field passes validation
          field: function(field, fieldName) {
            var
              identifier  = field.identifier || fieldName,
              $field      = module.get.field(identifier),
              fieldValid  = true,
              fieldErrors = []
            ;
            if(!field.identifier) {
              module.debug('Using field name as identifier', identifier);
              field.identifier = identifier;
            }
            if($field.prop('disabled')) {
              module.debug('Field is disabled. Skipping', identifier);
              fieldValid = true;
            }
            else if(field.optional && $.trim($field.val()) === ''){
              module.debug('Field is optional and empty. Skipping', identifier);
              fieldValid = true;
            }
            else if(field.rules !== undefined) {
              $.each(field.rules, function(index, rule) {
                if( module.has.field(identifier) && !( module.validate.rule(field, rule) ) ) {
                  module.debug('Field is invalid', identifier, rule.type);
                  fieldErrors.push(module.get.prompt(rule, field));
                  fieldValid = false;
                }
              });
            }
            if(fieldValid) {
              module.remove.prompt(identifier, fieldErrors);
              settings.onValid.call($field);
            }
            else {
              formErrors = formErrors.concat(fieldErrors);
              module.add.prompt(identifier, fieldErrors);
              settings.onInvalid.call($field, fieldErrors);
              return false;
            }
            return true;
          },

          // takes validation rule and returns whether field passes rule
          rule: function(field, rule) {
            var
              $field       = module.get.field(field.identifier),
              type         = rule.type,
              value        = $field.val(),
              isValid      = true,
              ancillary    = module.get.ancillaryValue(rule),
              ruleName     = module.get.ruleName(rule),
              ruleFunction = settings.rules[ruleName]
            ;
            if( !$.isFunction(ruleFunction) ) {
              module.error(error.noRule, ruleName);
              return;
            }
            // cast to string avoiding encoding special values
            value = (value === undefined || value === '' || value === null)
              ? ''
              : $.trim(value + '')
            ;
            return ruleFunction.call($field, value, ancillary);
          }
        },

        setting: function(name, value) {
          if( $.isPlainObject(name) ) {
            $.extend(true, settings, name);
          }
          else if(value !== undefined) {
            settings[name] = value;
          }
          else {
            return settings[name];
          }
        },
        internal: function(name, value) {
          if( $.isPlainObject(name) ) {
            $.extend(true, module, name);
          }
          else if(value !== undefined) {
            module[name] = value;
          }
          else {
            return module[name];
          }
        },
        debug: function() {
          if(settings.debug) {
            if(settings.performance) {
              module.performance.log(arguments);
            }
            else {
              module.debug = Function.prototype.bind.call(console.info, console, settings.name + ':');
              module.debug.apply(console, arguments);
            }
          }
        },
        verbose: function() {
          if(settings.verbose && settings.debug) {
            if(settings.performance) {
              module.performance.log(arguments);
            }
            else {
              module.verbose = Function.prototype.bind.call(console.info, console, settings.name + ':');
              module.verbose.apply(console, arguments);
            }
          }
        },
        error: function() {
          module.error = Function.prototype.bind.call(console.error, console, settings.name + ':');
          module.error.apply(console, arguments);
        },
        performance: {
          log: function(message) {
            var
              currentTime,
              executionTime,
              previousTime
            ;
            if(settings.performance) {
              currentTime   = new Date().getTime();
              previousTime  = time || currentTime;
              executionTime = currentTime - previousTime;
              time          = currentTime;
              performance.push({
                'Name'           : message[0],
                'Arguments'      : [].slice.call(message, 1) || '',
                'Element'        : element,
                'Execution Time' : executionTime
              });
            }
            clearTimeout(module.performance.timer);
            module.performance.timer = setTimeout(module.performance.display, 500);
          },
          display: function() {
            var
              title = settings.name + ':',
              totalTime = 0
            ;
            time = false;
            clearTimeout(module.performance.timer);
            $.each(performance, function(index, data) {
              totalTime += data['Execution Time'];
            });
            title += ' ' + totalTime + 'ms';
            if(moduleSelector) {
              title += ' \'' + moduleSelector + '\'';
            }
            if($allModules.length > 1) {
              title += ' ' + '(' + $allModules.length + ')';
            }
            if( (console.group !== undefined || console.table !== undefined) && performance.length > 0) {
              console.groupCollapsed(title);
              if(console.table) {
                console.table(performance);
              }
              else {
                $.each(performance, function(index, data) {
                  console.log(data['Name'] + ': ' + data['Execution Time']+'ms');
                });
              }
              console.groupEnd();
            }
            performance = [];
          }
        },
        invoke: function(query, passedArguments, context) {
          var
            object = instance,
            maxDepth,
            found,
            response
          ;
          passedArguments = passedArguments || queryArguments;
          context         = element         || context;
          if(typeof query == 'string' && object !== undefined) {
            query    = query.split(/[\. ]/);
            maxDepth = query.length - 1;
            $.each(query, function(depth, value) {
              var camelCaseValue = (depth != maxDepth)
                ? value + query[depth + 1].charAt(0).toUpperCase() + query[depth + 1].slice(1)
                : query
              ;
              if( $.isPlainObject( object[camelCaseValue] ) && (depth != maxDepth) ) {
                object = object[camelCaseValue];
              }
              else if( object[camelCaseValue] !== undefined ) {
                found = object[camelCaseValue];
                return false;
              }
              else if( $.isPlainObject( object[value] ) && (depth != maxDepth) ) {
                object = object[value];
              }
              else if( object[value] !== undefined ) {
                found = object[value];
                return false;
              }
              else {
                return false;
              }
            });
          }
          if( $.isFunction( found ) ) {
            response = found.apply(context, passedArguments);
          }
          else if(found !== undefined) {
            response = found;
          }
          if($.isArray(returnedValue)) {
            returnedValue.push(response);
          }
          else if(returnedValue !== undefined) {
            returnedValue = [returnedValue, response];
          }
          else if(response !== undefined) {
            returnedValue = response;
          }
          return found;
        }
      };
      module.initialize();
    })
  ;

  return (returnedValue !== undefined)
    ? returnedValue
    : this
  ;
};

$.fn.form.settings = {

  name              : 'Form',
  namespace         : 'form',

  debug             : false,
  verbose           : false,
  performance       : true,

  fields            : false,

  keyboardShortcuts : true,
  on                : 'submit',
  inline            : false,

  delay             : 200,
  revalidate        : true,

  transition        : 'scale',
  duration          : 200,

  onValid           : function() {},
  onInvalid         : function() {},
  onSuccess         : function() { return true; },
  onFailure         : function() { return false; },

  metadata : {
    defaultValue : 'default',
    validate     : 'validate'
  },

  regExp: {
    bracket : /\[(.*)\]/i,
    decimal : /^\d*(\.)\d+/,
    email   : "[a-z0-9!#$%&'*+/=?^_`{|}~-]+(?:\\.[a-z0-9!#$%&'*+/=?^_`{|}~-]+)*@(?:[a-z0-9](?:[a-z0-9-]*[a-z0-9])?\\.)+[a-z0-9](?:[a-z0-9-]*[a-z0-9])?",
    escape  : /[\-\[\]\/\{\}\(\)\*\+\?\.\\\^\$\|]/g,
    flags   : /^\/(.*)\/(.*)?/,
    integer : /^\-?\d+$/,
    number  : /^\-?\d*(\.\d+)?$/,
    url     : /(https?:\/\/(?:www\.|(?!www))[^\s\.]+\.[^\s]{2,}|www\.[^\s]+\.[^\s]{2,})/i
  },

  text: {
    unspecifiedRule  : 'Please enter a valid value',
    unspecifiedField : 'This field'
  },

  prompt: {
    empty                : '{name} must have a value',
    checked              : '{name} must be checked',
    email                : '{name} must be a valid e-mail',
    url                  : '{name} must be a valid url',
    regExp               : '{name} is not formatted correctly',
    integer              : '{name} must be an integer',
    decimal              : '{name} must be a decimal number',
    number               : '{name} must be set to a number',
    is                   : '{name} must be "{ruleValue}"',
    isExactly            : '{name} must be exactly "{ruleValue}"',
    not                  : '{name} cannot be set to "{ruleValue}"',
    notExactly           : '{name} cannot be set to exactly "{ruleValue}"',
    contain              : '{name} cannot contain "{ruleValue}"',
    containExactly       : '{name} cannot contain exactly "{ruleValue}"',
    doesntContain        : '{name} must contain  "{ruleValue}"',
    doesntContainExactly : '{name} must contain exactly "{ruleValue}"',
    minLength            : '{name} must be at least {ruleValue} characters',
    length               : '{name} must be at least {ruleValue} characters',
    exactLength          : '{name} must be exactly {ruleValue} characters',
    maxLength            : '{name} cannot be longer than {ruleValue} characters',
    match                : '{name} must match {ruleValue} field',
    different            : '{name} must have a different value than {ruleValue} field',
    creditCard           : '{name} must be a valid credit card number',
    minCount             : '{name} must have at least {ruleValue} choices',
    exactCount           : '{name} must have exactly {ruleValue} choices',
    maxCount             : '{name} must have {ruleValue} or less choices'
  },

  selector : {
    checkbox   : 'input[type="checkbox"], input[type="radio"]',
    clear      : '.clear',
    field      : 'input, textarea, select',
    group      : '.field',
    input      : 'input',
    message    : '.error.message',
    prompt     : '.prompt.label',
    radio      : 'input[type="radio"]',
    reset      : '.reset:not([type="reset"])',
    submit     : '.submit:not([type="submit"])',
    uiCheckbox : '.ui.checkbox',
    uiDropdown : '.ui.dropdown'
  },

  className : {
    error   : 'error',
    label   : 'ui prompt label',
    pressed : 'down',
    success : 'success'
  },

  error: {
    identifier : 'You must specify a string identifier for each field',
    method     : 'The method you called is not defined.',
    noRule     : 'There is no rule matching the one you specified',
    oldSyntax  : 'Starting in 2.0 forms now only take a single settings object. Validation settings converted to new syntax automatically.'
  },

  templates: {

    // template that produces error message
    error: function(errors) {
      var
        html = '<ul class="list">'
      ;
      $.each(errors, function(index, value) {
        html += '<li>' + value + '</li>';
      });
      html += '</ul>';
      return $(html);
    },

    // template that produces label
    prompt: function(errors) {
      return $('<div/>')
        .addClass('ui basic red pointing prompt label')
        .html(errors[0])
      ;
    }
  },

  rules: {

    // is not empty or blank string
    empty: function(value) {
      return !(value === undefined || '' === value || $.isArray(value) && value.length === 0);
    },

    // checkbox checked
    checked: function() {
      return ($(this).filter(':checked').length > 0);
    },

    // is most likely an email
    email: function(value){
      var
        emailRegExp = new RegExp($.fn.form.settings.regExp.email, 'i')
      ;
      return emailRegExp.test(value);
    },

    // value is most likely url
    url: function(value) {
      return $.fn.form.settings.regExp.url.test(value);
    },

    // matches specified regExp
    regExp: function(value, regExp) {
      var
        regExpParts = regExp.match($.fn.form.settings.regExp.flags),
        flags
      ;
      // regular expression specified as /baz/gi (flags)
      if(regExpParts) {
        regExp = (regExpParts.length >= 2)
          ? regExpParts[1]
          : regExp
        ;
        flags = (regExpParts.length >= 3)
          ? regExpParts[2]
          : ''
        ;
      }
      return value.match( new RegExp(regExp, flags) );
    },

    // is valid integer or matches range
    integer: function(value, range) {
      var
        intRegExp = $.fn.form.settings.regExp.integer,
        min,
        max,
        parts
      ;
      if( !range || ['', '..'].indexOf(range) !== -1) {
        // do nothing
      }
      else if(range.indexOf('..') == -1) {
        if(intRegExp.test(range)) {
          min = max = range - 0;
        }
      }
      else {
        parts = range.split('..', 2);
        if(intRegExp.test(parts[0])) {
          min = parts[0] - 0;
        }
        if(intRegExp.test(parts[1])) {
          max = parts[1] - 0;
        }
      }
      return (
        intRegExp.test(value) &&
        (min === undefined || value >= min) &&
        (max === undefined || value <= max)
      );
    },

    // is valid number (with decimal)
    decimal: function(value) {
      return $.fn.form.settings.regExp.decimal.test(value);
    },

    // is valid number
    number: function(value) {
      return $.fn.form.settings.regExp.number.test(value);
    },

    // is value (case insensitive)
    is: function(value, text) {
      text = (typeof text == 'string')
        ? text.toLowerCase()
        : text
      ;
      value = (typeof value == 'string')
        ? value.toLowerCase()
        : value
      ;
      return (value == text);
    },

    // is value
    isExactly: function(value, text) {
      return (value == text);
    },

    // value is not another value (case insensitive)
    not: function(value, notValue) {
      value = (typeof value == 'string')
        ? value.toLowerCase()
        : value
      ;
      notValue = (typeof notValue == 'string')
        ? notValue.toLowerCase()
        : notValue
      ;
      return (value != notValue);
    },

    // value is not another value (case sensitive)
    notExactly: function(value, notValue) {
      return (value != notValue);
    },

    // value contains text (insensitive)
    contains: function(value, text) {
      // escape regex characters
      text = text.replace($.fn.form.settings.regExp.escape, "\\$&");
      return (value.search( new RegExp(text, 'i') ) !== -1);
    },

    // value contains text (case sensitive)
    containsExactly: function(value, text) {
      // escape regex characters
      text = text.replace($.fn.form.settings.regExp.escape, "\\$&");
      return (value.search( new RegExp(text) ) !== -1);
    },

    // value contains text (insensitive)
    doesntContain: function(value, text) {
      // escape regex characters
      text = text.replace($.fn.form.settings.regExp.escape, "\\$&");
      return (value.search( new RegExp(text, 'i') ) === -1);
    },

    // value contains text (case sensitive)
    doesntContainExactly: function(value, text) {
      // escape regex characters
      text = text.replace($.fn.form.settings.regExp.escape, "\\$&");
      return (value.search( new RegExp(text) ) === -1);
    },

    // is at least string length
    minLength: function(value, requiredLength) {
      return (value !== undefined)
        ? (value.length >= requiredLength)
        : false
      ;
    },

    // see rls notes for 2.0.6 (this is a duplicate of minLength)
    length: function(value, requiredLength) {
      return (value !== undefined)
        ? (value.length >= requiredLength)
        : false
      ;
    },

    // is exactly length
    exactLength: function(value, requiredLength) {
      return (value !== undefined)
        ? (value.length == requiredLength)
        : false
      ;
    },

    // is less than length
    maxLength: function(value, maxLength) {
      return (value !== undefined)
        ? (value.length <= maxLength)
        : false
      ;
    },

    // matches another field
    match: function(value, identifier) {
      var
        $form = $(this),
        matchingValue
      ;
      if( $('[data-validate="'+ identifier +'"]').length > 0 ) {
        matchingValue = $('[data-validate="'+ identifier +'"]').val();
      }
      else if($('#' + identifier).length > 0) {
        matchingValue = $('#' + identifier).val();
      }
      else if($('[name="' + identifier +'"]').length > 0) {
        matchingValue = $('[name="' + identifier + '"]').val();
      }
      else if( $('[name="' + identifier +'[]"]').length > 0 ) {
        matchingValue = $('[name="' + identifier +'[]"]');
      }
      return (matchingValue !== undefined)
        ? ( value.toString() == matchingValue.toString() )
        : false
      ;
    },

    // different than another field
    different: function(value, identifier) {
      // use either id or name of field
      var
        $form = $(this),
        matchingValue
      ;
      if( $('[data-validate="'+ identifier +'"]').length > 0 ) {
        matchingValue = $('[data-validate="'+ identifier +'"]').val();
      }
      else if($('#' + identifier).length > 0) {
        matchingValue = $('#' + identifier).val();
      }
      else if($('[name="' + identifier +'"]').length > 0) {
        matchingValue = $('[name="' + identifier + '"]').val();
      }
      else if( $('[name="' + identifier +'[]"]').length > 0 ) {
        matchingValue = $('[name="' + identifier +'[]"]');
      }
      return (matchingValue !== undefined)
        ? ( value.toString() !== matchingValue.toString() )
        : false
      ;
    },

    creditCard: function(cardNumber, cardTypes) {
      var
        cards = {
          visa: {
            pattern : /^4/,
            length  : [16]
          },
          amex: {
            pattern : /^3[47]/,
            length  : [15]
          },
          mastercard: {
            pattern : /^5[1-5]/,
            length  : [16]
          },
          discover: {
            pattern : /^(6011|622(12[6-9]|1[3-9][0-9]|[2-8][0-9]{2}|9[0-1][0-9]|92[0-5]|64[4-9])|65)/,
            length  : [16]
          },
          unionPay: {
            pattern : /^(62|88)/,
            length  : [16, 17, 18, 19]
          },
          jcb: {
            pattern : /^35(2[89]|[3-8][0-9])/,
            length  : [16]
          },
          maestro: {
            pattern : /^(5018|5020|5038|6304|6759|676[1-3])/,
            length  : [12, 13, 14, 15, 16, 17, 18, 19]
          },
          dinersClub: {
            pattern : /^(30[0-5]|^36)/,
            length  : [14]
          },
          laser: {
            pattern : /^(6304|670[69]|6771)/,
            length  : [16, 17, 18, 19]
          },
          visaElectron: {
            pattern : /^(4026|417500|4508|4844|491(3|7))/,
            length  : [16]
          }
        },
        valid         = {},
        validCard     = false,
        requiredTypes = (typeof cardTypes == 'string')
          ? cardTypes.split(',')
          : false,
        unionPay,
        validation
      ;

      if(typeof cardNumber !== 'string' || cardNumber.length === 0) {
        return;
      }

      // verify card types
      if(requiredTypes) {
        $.each(requiredTypes, function(index, type){
          // verify each card type
          validation = cards[type];
          if(validation) {
            valid = {
              length  : ($.inArray(cardNumber.length, validation.length) !== -1),
              pattern : (cardNumber.search(validation.pattern) !== -1)
            };
            if(valid.length && valid.pattern) {
              validCard = true;
            }
          }
        });

        if(!validCard) {
          return false;
        }
      }

      // skip luhn for UnionPay
      unionPay = {
        number  : ($.inArray(cardNumber.length, cards.unionPay.length) !== -1),
        pattern : (cardNumber.search(cards.unionPay.pattern) !== -1)
      };
      if(unionPay.number && unionPay.pattern) {
        return true;
      }

      // verify luhn, adapted from  <https://gist.github.com/2134376>
      var
        length        = cardNumber.length,
        multiple      = 0,
        producedValue = [
          [0, 1, 2, 3, 4, 5, 6, 7, 8, 9],
          [0, 2, 4, 6, 8, 1, 3, 5, 7, 9]
        ],
        sum           = 0
      ;
      while (length--) {
        sum += producedValue[multiple][parseInt(cardNumber.charAt(length), 10)];
        multiple ^= 1;
      }
      return (sum % 10 === 0 && sum > 0);
    },

    minCount: function(value, minCount) {
      if(minCount == 0) {
        return true;
      }
      if(minCount == 1) {
        return (value !== '');
      }
      return (value.split(',').length >= minCount);
    },

    exactCount: function(value, exactCount) {
      if(exactCount == 0) {
        return (value === '');
      }
      if(exactCount == 1) {
        return (value !== '' && value.search(',') === -1);
      }
      return (value.split(',').length == exactCount);
    },

    maxCount: function(value, maxCount) {
      if(maxCount == 0) {
        return false;
      }
      if(maxCount == 1) {
        return (value.search(',') === -1);
      }
      return (value.split(',').length <= maxCount);
    }
  }

};

})( jQuery, window, document );