text: /*
   * # Semantic - Form Validation
   * http://github.com/jlukic/semantic-ui/
   *
   *
   * Copyright 2013 Contributors
   * Released under the MIT license
   * http://opensource.org/licenses/MIT
   *
   */
  
  ;(function ( $, window, document, undefined ) {
  
  $.fn.form = function(fields, parameters) {
    var
      $allModules     = $(this),
  
      settings        = $.extend(true, {}, $.fn.form.settings, parameters),
      validation      = $.extend({}, $.fn.form.settings.defaults, fields),
  
      namespace       = settings.namespace,
      metadata        = settings.metadata,
      selector        = settings.selector,
      className       = settings.className,
      error           = settings.error,
  
      eventNamespace  = '.' + namespace,
      moduleNamespace = 'module-' + namespace,
  
      moduleSelector  = $allModules.selector || '',
  
      time            = new Date().getTime(),
      performance     = [],
  
      query           = arguments[0],
      methodInvoked   = (typeof query == 'string'),
      queryArguments  = [].slice.call(arguments, 1),
      returnedValue
    ;
    $allModules
      .each(function() {
        var
          $module    = $(this),
          $field     = $(this).find(selector.field),
          $group     = $(this).find(selector.group),
          $message   = $(this).find(selector.message),
          $prompt    = $(this).find(selector.prompt),
          $submit    = $(this).find(selector.submit),
  
          formErrors = [],
  
          element    = this,
          instance   = $module.data(moduleNamespace),
          module
        ;
  
        module      = {
  
          initialize: function() {
            module.verbose('Initializing form validation', $module, validation, settings);
            if(settings.keyboardShortcuts) {
              $field
                .on('keydown' + eventNamespace, module.event.field.keydown)
              ;
            }
            $module
              .on('submit' + eventNamespace, module.validate.form)
            ;
            $field
              .on('blur' + eventNamespace, module.event.field.blur)
            ;
            $submit
              .on('click' + eventNamespace, module.submit)
            ;
            $field
              .on(module.get.changeEvent() + eventNamespace, module.event.field.change)
            ;
            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
              .off(eventNamespace)
              .removeData(moduleNamespace)
            ;
          },
  
          refresh: function() {
            module.verbose('Refreshing selector cache');
            $field = $module.find(selector.field);
          },
  
          submit: function() {
            module.verbose('Submitting form', $module);
            $module
              .submit()
            ;
          },
  
          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) ) {
                  module.debug('Enter key pressed, submitting form');
                  $submit
                    .addClass(className.down)
                  ;
                  $field
                    .one('keyup' + eventNamespace, module.event.field.keyup)
                  ;
                  event.preventDefault();
                  return false;
                }
              },
              keyup: function() {
                module.verbose('Doing keyboard shortcut form submit');
                $submit.removeClass(className.down);
                module.submit();
              },
              blur: function() {
                var
                  $field      = $(this),
                  $fieldGroup = $field.closest($group)
                ;
                if( $fieldGroup.hasClass(className.error) ) {
                  module.debug('Revalidating field', $field,  module.get.validation($field));
                  module.validate.field( module.get.validation($field) );
                }
                else if(settings.on == 'blur' || settings.on == 'change') {
                  module.validate.field( module.get.validation($field) );
                }
              },
              change: function() {
                var
                  $field      = $(this),
                  $fieldGroup = $field.closest($group)
                ;
                if( $fieldGroup.hasClass(className.error) ) {
                  module.debug('Revalidating field', $field,  module.get.validation($field));
                  module.validate.field( module.get.validation($field) );
                }
                else if(settings.on == 'change') {
                  module.validate.field( module.get.validation($field) );
                }
              }
            }
  
          },
  
          get: {
            changeEvent: function() {
              return (document.createElement('input').oninput !== undefined)
                ? 'input'
                : (document.createElement('input').onpropertychange !== undefined)
                  ? 'propertychange'
                  : 'keyup'
              ;
            },
            field: function(identifier) {
              module.verbose('Finding field with identifier', identifier);
              if( $field.filter('#' + identifier).size() > 0 ) {
                return $field.filter('#' + identifier);
              }
              else if( $field.filter('[name="' + identifier +'"]').size() > 0 ) {
                return $field.filter('[name="' + identifier +'"]');
              }
              else if( $field.filter('[data-' + metadata.validate + '="'+ identifier +'"]').size() > 0 ) {
                return $field.filter('[data-' + metadata.validate + '="'+ identifier +'"]');
              }
              return $('<input/>');
            },
            validation: function($field) {
              var
                rules
              ;
              $.each(validation, function(fieldName, field) {
                if( module.get.field(field.identifier).get(0) == $field.get(0) ) {
                  rules = field;
                }
              });
              return rules || false;
            }
          },
  
          has: {
  
            field: function(identifier) {
              module.verbose('Checking for existence of a field with identifier', identifier);
              if( $field.filter('#' + identifier).size() > 0 ) {
                return true;
              }
              else if( $field.filter('[name="' + identifier +'"]').size() > 0 ) {
                return true;
              }
              else if( $field.filter('[data-' + metadata.validate + '="'+ identifier +'"]').size() > 0 ) {
                return true;
              }
              return false;
            }
  
          },
  
          add: {
            prompt: function(field, errors) {
              var
                $field       = module.get.field(field.identifier),
                $fieldGroup  = $field.closest($group),
                $prompt      = $fieldGroup.find(selector.prompt),
                promptExists = ($prompt.size() !== 0)
              ;
              module.verbose('Adding inline error', field);
              $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)
                    ;
                  }
                }
              }
            },
            errors: function(errors) {
              module.debug('Adding form error messages', errors);
              $message
                .html( settings.templates.error(errors) )
              ;
            }
          },
  
          remove: {
            prompt: function(field) {
              var
                $field      = module.get.field(field.identifier),
                $fieldGroup = $field.closest($group),
                $prompt     = $fieldGroup.find(selector.prompt)
              ;
              $fieldGroup
                .removeClass(className.error)
              ;
              if(settings.inline && $prompt.is(':visible')) {
                module.verbose('Removing prompt for field', field);
                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();
                    })
                  ;
                }
              }
            }
          },
  
          validate: {
  
            form: function(event) {
              var
                allValid = true
              ;
              // reset errors
              formErrors = [];
              $.each(validation, function(fieldName, field) {
                if( !( module.validate.field(field) ) ) {
                  allValid = false;
                }
              });
              if(allValid) {
                module.debug('Form has no validation errors, submitting');
                $module
                  .removeClass(className.error)
                  .addClass(className.success)
                ;
                $.proxy(settings.onSuccess, this)(event);
              }
              else {
                module.debug('Form has errors');
                $module.addClass(className.error);
                if(!settings.inline) {
                  module.add.errors(formErrors);
                }
                return $.proxy(settings.onFailure, this)(formErrors);
              }
            },
  
            // takes a validation object and returns whether field passes validation
            field: function(field) {
              var
                $field      = module.get.field(field.identifier),
                fieldValid  = true,
                fieldErrors = []
              ;
              if(field.rules !== undefined) {
                $.each(field.rules, function(index, rule) {
                  if( module.has.field(field.identifier) && !( module.validate.rule(field, rule) ) ) {
                    module.debug('Field is invalid', field.identifier, rule.type);
                    fieldErrors.push(rule.prompt);
                    fieldValid = false;
                  }
                });
              }
              if(fieldValid) {
                module.remove.prompt(field, fieldErrors);
                $.proxy(settings.onValid, $field)();
              }
              else {
                formErrors = formErrors.concat(fieldErrors);
                module.add.prompt(field, fieldErrors);
                $.proxy(settings.onInvalid, $field)(fieldErrors);
                return false;
              }
              return true;
            },
  
            // takes validation rule and returns whether field passes rule
            rule: function(field, validation) {
              var
                $field        = module.get.field(field.identifier),
                type          = validation.type,
                value         = $field.val() + '',
  
                bracketRegExp = /\[(.*?)\]/i,
                bracket       = bracketRegExp.exec(type),
                isValid       = true,
                ancillary,
                functionType
              ;
              // if bracket notation is used, pass in extra parameters
              if(bracket !== undefined && bracket !== null) {
                ancillary    = '' + bracket[1];
                functionType = type.replace(bracket[0], '');
                isValid      = $.proxy(settings.rules[functionType], $module)(value, ancillary);
              }
              // normal notation
              else {
                isValid = $.proxy(settings.rules[type], $field)(value);
              }
              return isValid;
            }
          },
  
          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({
                  'Element'        : element,
                  'Name'           : message[0],
                  'Arguments'      : [].slice.call(message, 1) || '',
                  'Execution Time' : executionTime
                });
              }
              clearTimeout(module.performance.timer);
              module.performance.timer = setTimeout(module.performance.display, 100);
            },
            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.size() > 1) {
                title += ' ' + '(' + $allModules.size() + ')';
              }
              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
              maxDepth,
              found,
              response
            ;
            passedArguments = passedArguments || queryArguments;
            context         = element         || context;
            if(typeof query == 'string' && instance !== 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( instance[camelCaseValue] ) && (depth != maxDepth) ) {
                  instance = instance[camelCaseValue];
                }
                else if( instance[camelCaseValue] !== undefined ) {
                  found = instance[camelCaseValue];
                  return false;
                }
                else if( $.isPlainObject( instance[value] ) && (depth != maxDepth) ) {
                  instance = instance[value];
                }
                else if( instance[value] !== undefined ) {
                  found = instance[value];
                  return false;
                }
                else {
                  module.error(error.method, query);
                  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;
          }
        };
        if(methodInvoked) {
          if(instance === undefined) {
            module.initialize();
          }
          module.invoke(query);
        }
        else {
          if(instance !== undefined) {
            module.destroy();
          }
          module.initialize();
        }
  
      })
    ;
  
    return (returnedValue !== undefined)
      ? returnedValue
      : this
    ;
  };
  
  $.fn.form.settings = {
  
    name              : 'Form',
    namespace         : 'form',
  
    debug             : true,
    verbose           : true,
    performance       : true,
  
  
    keyboardShortcuts : true,
    on                : 'submit',
    inline            : false,
  
    transition        : 'scale',
    duration          : 150,
  
  
    onValid           : function() {},
    onInvalid         : function() {},
    onSuccess         : function() { return true; },
    onFailure         : function() { return false; },
  
    metadata : {
      validate: 'validate'
    },
  
    selector : {
      message : '.error.message',
      field   : 'input, textarea, select',
      group   : '.field',
      input   : 'input',
      prompt  : '.prompt',
      submit  : '.submit'
    },
  
    className : {
      error   : 'error',
      success : 'success',
      down    : 'down',
      label   : 'ui label prompt'
    },
  
    // errors
    error: {
      method   : 'The method you called is not defined.'
    },
  
  
  
    templates: {
      error: function(errors) {
        var
          html = '<ul class="list">'
        ;
        $.each(errors, function(index, value) {
          html += '<li>' + value + '</li>';
        });
        html += '</ul>';
        return $(html);
      },
      prompt: function(errors) {
        return $('<div/>')
          .addClass('ui red pointing prompt label')
          .html(errors[0])
        ;
      }
    },
  
    rules: {
      checked: function() {
        return ($(this).filter(':checked').size() > 0);
      },
      empty: function(value) {
        return !(value === undefined || '' === value);
      },
      email: function(value){
        var
          emailRegExp = new RegExp("[a-z0-9!#$%&'*+/=?^_`{|}~-]+(?:\\.[a-z0-9!#$%&'*+/=?^_`{|}~-]+)*@(?:[a-z0-9](?:[a-z0-9-]*[a-z0-9])?\\.)+[a-z0-9](?:[a-z0-9-]*[a-z0-9])?")
        ;
        return emailRegExp.test(value);
      },
      length: function(value, requiredLength) {
        return (value !== undefined)
          ? (value.length >= requiredLength)
          : false
        ;
      },
      not: function(value, notValue) {
        return (value != notValue);
      },
      contains: function(value, text) {
        text = text.replace(/[\-\[\]\/\{\}\(\)\*\+\?\.\\\^\$\|]/g, "\\$&");
        return (value.search(text) !== -1);
      },
      is: function(value, text) {
        return (value == text);
      },
      maxLength: function(value, maxLength) {
        return (value !== undefined)
          ? (value.length <= maxLength)
          : false
        ;
      },
      match: function(value, fieldIdentifier) {
        // use either id or name of field
        var
          $form = $(this),
          matchingValue
        ;
        if($form.find('#' + fieldIdentifier).size() > 0) {
          matchingValue = $form.find('#' + fieldIdentifier).val();
        }
        else if($form.find('[name=' + fieldIdentifier +']').size() > 0) {
          matchingValue = $form.find('[name=' + fieldIdentifier + ']').val();
        }
        else if( $form.find('[data-validate="'+ fieldIdentifier +'"]').size() > 0 ) {
          matchingValue = $form.find('[data-validate="'+ fieldIdentifier +'"]').val();
        }
        return (matchingValue !== undefined)
          ? ( value.toString() == matchingValue.toString() )
          : false
        ;
      },
      url: function(value) {
        var
          urlRegExp = /(ftp|http|https):\/\/(\w+:{0,1}\w*@)?(\S+)(:[0-9]+)?(\/|\/([\w#!:.?+=&%@!\-\/]))?/
        ;
        return urlRegExp.test(value);
      }
    }
  
  };
  
  })( jQuery, window , document );
  