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✏️ Editing: h5peditor.js

/* global ns */
/**
 * This file contains helper functions for the editor.
 */

// Grab common resources set in parent window, but avoid sharing back resources set in iframe)
window.ns = window.H5PEditor = H5P.jQuery.extend(false, {}, window.parent.H5PEditor);
ns.$ = H5P.jQuery;

// Load needed resources from parent.
H5PIntegration = H5P.jQuery.extend(false, {}, window.parent.H5PIntegration);
H5PIntegration.loadedJs = [];
H5PIntegration.loadedCss = [];

/**
 * Constants used within editor
 *
 * @type {{otherLibraries: string}}
 */
ns.constants = {
  otherLibraries: 'Other Libraries',
};

/**
 * Keep track of our widgets.
 */
ns.widgets = {};

/**
 * Caches library data (semantics, js and css)
 */
ns.libraryCache = {};

/**
 * Keeps track of callbacks to run once a library gets loaded.
 */
ns.loadedCallbacks = [];

/**
 * Keep track of which libraries have been loaded in the browser, i.e CSS is
 * added and JS have been run
 *
 * @type {Object}
 */
ns.libraryLoaded = {};

/**
 * Indiciates if the user is using Internet Explorer.
 */
ns.isIE = navigator.userAgent.match(/; MSIE \d+.\d+;/) !== null;

/**
 * Keep track of renderable common fields.
 *
 * @type {Object}
 */
ns.renderableCommonFields = {};

(() => {
  const loading = {}; // Map of callbacks for each src being loaded

/**
   * Help load JavaScripts, prevents double loading.
   *
   * @param {string} src
   * @param {Function} done Callback
   */
  ns.loadJs = (src, done) => {
    if (H5P.jsLoaded(src)) {
      // Already loaded
      done(); 
      return;
    }

if (loading[src] !== undefined) {
      // Loading in progress...
      loading[src].push(done);
      return;
    }

loading[src] = [done];

// Load using script tag
    var script = document.createElement('script');
    script.type = 'text/javascript';
    script.charset = 'UTF-8';
    script.async = false;
    script.onload = function () {
      H5PIntegration.loadedJs.push(src);
      loading[src].forEach(cb => cb());
      delete loading[src];
    };
    script.onerror = function (err) {
      loading[src].forEach(cb => cb(err));
      delete loading[src];      
    };
    script.src = src;
    document.head.appendChild(script);
  };
})();

/**
 * Helper function invoked when a library is requested. Will add CSS and eval JS
 * if not already done.
 *
 * @private
 * @param {string} libraryName On the form "machineName majorVersion.minorVersion"
 * @param {Function} callback
 */
ns.libraryRequested = function (libraryName, callback) {
  var libraryData = ns.libraryCache[libraryName];

if (!ns.libraryLoaded[libraryName]) {
    // Add CSS.
    if (libraryData.css !== undefined) {
      libraryData.css.forEach(function (path) {
        if (!H5P.cssLoaded(path)) {
          H5PIntegration.loadedCss.push(path);
          if (path) {
            ns.$('head').append('<link ' +
              'rel="stylesheet" ' +
              'href="' + path + '" ' +
              'type="text/css" ' +
              '/>');
          }
        }
      });
    }

// Add JS
    var loadingJs = false;
    if (libraryData.javascript !== undefined && libraryData.javascript.length) {
      libraryData.javascript.forEach(function (path) {
        if (!H5P.jsLoaded(path)) {
          loadingJs = true;
          ns.loadJs(path, function (err) {
            if (err) {
              console.error('Error while loading script', err);
              return;
            }

var isFinishedLoading = libraryData.javascript.reduce(function (hasLoaded, jsPath) {
              return hasLoaded && H5P.jsLoaded(jsPath);
            }, true);

if (isFinishedLoading) {
              ns.libraryLoaded[libraryName] = true;

// Need to set translations after all scripts have been loaded
              if (libraryData.translations) {
                for (var machineName in libraryData.translations) {
                  H5PEditor.language[machineName] = libraryData.translations[machineName];
                }
              }

callback(ns.libraryCache[libraryName].semantics);
            }
          });
        }
      });
    }
    if (!loadingJs) {
      // Don't have to wait for any scripts, run callback
      ns.libraryLoaded[libraryName] = true;
      callback(ns.libraryCache[libraryName].semantics);
    }
  }
  else {
    // Already loaded, run callback
    callback(ns.libraryCache[libraryName].semantics);
  }
};

/**
 * Loads the given library, inserts any css and js and
 * then runs the callback with the samantics as an argument.
 *
 * @param {string} libraryName
 *  On the form machineName majorVersion.minorVersion
 * @param {function} callback
 * @returns {undefined}
 */
ns.loadLibrary = function (libraryName, callback) {
  switch (ns.libraryCache[libraryName]) {
    default:
      // Get semantics from cache.
      ns.libraryRequested(libraryName, callback);
      break;

case 0:
      // Add to queue.
      if (ns.loadedCallbacks[libraryName] === undefined) {
        ns.loadedCallbacks[libraryName] = [];
      }
      ns.loadedCallbacks[libraryName].push(callback);
      break;

case undefined:
      // Load semantics.
      ns.libraryCache[libraryName] = 0; // Indicates that others should queue.
      ns.loadedCallbacks[libraryName] = []; // Other callbacks to run once loaded.
      var library = ns.libraryFromString(libraryName);

var url = ns.getAjaxUrl('libraries', library);

// Add content language to URL
      if (ns.contentLanguage !== undefined) {
        url += (url.indexOf('?') === -1 ? '?' : '&') + 'language=' + ns.contentLanguage;
      }
      // Add common fields default lanuage to URL
      const defaultLanguage = ns.defaultLanguage; // Avoid changes after sending AJAX
      if (defaultLanguage !== undefined) {
        url += (url.indexOf('?') === -1 ? '?' : '&') + 'default-language=' + defaultLanguage;
      }

// Fire away!
      ns.$.ajax({
        url: url,
        success: function (libraryData) {
          libraryData.translation = { // Used to cache all the translations
            en: libraryData.semantics
          };
          let languageSemantics = [];
          if (libraryData.language !== null) {
            languageSemantics = JSON.parse(libraryData.language).semantics;
            delete libraryData.language; // Avoid caching a lot of unused data
          }
          var semantics = ns.$.extend(true, [], libraryData.semantics, languageSemantics);
          if (libraryData.defaultLanguage !== null) {
            libraryData.translation[defaultLanguage] = JSON.parse(libraryData.defaultLanguage).semantics;
            delete libraryData.defaultLanguage; // Avoid caching a lot of unused data
            ns.updateCommonFieldsDefault(semantics, libraryData.translation[defaultLanguage]);
          }
          libraryData.semantics = semantics;
          ns.libraryCache[libraryName] = libraryData;

ns.libraryRequested(libraryName, function (semantics) {
            callback(semantics);

// Run queue.
            if (ns.loadedCallbacks[libraryName]) {
              for (var i = 0; i < ns.loadedCallbacks[libraryName].length; i++) {
                ns.loadedCallbacks[libraryName][i](semantics);
              }
            }
          });
        },
        error: function (jqXHR, textStatus, errorThrown) {
          if (window['console'] !== undefined) {
            console.warn('Ajax request failed');
            console.warn(jqXHR);
            console.warn(textStatus);
            console.warn(errorThrown);
          }
        },
        dataType: 'json'
      });
  }
};

/**
 * Update common fields default values for the given semantics.
 * Works by reference.
 *
 * @param {Array} semantics
 * @param {Array} translation
 * @param {boolean} [parentIsCommon] Used to indicated that one of the ancestors is a common field
 */
ns.updateCommonFieldsDefault = function (semantics, translation, parentIsCommon) {
  for (let i = 0; i < semantics.length; i++) {
    const isCommon = (semantics[i].common === true || parentIsCommon);
    if (isCommon && semantics[i].default !== undefined &&
        translation[i] !== undefined && translation[i].default !== undefined) {
      // Update value
      semantics[i].default = translation[i].default;
    }
    if (semantics[i].fields !== undefined && semantics[i].fields.length &&
        translation[i].fields !== undefined && translation[i].fields.length) {
      // Look into sub fields
      ns.updateCommonFieldsDefault(semantics[i].fields, translation[i].fields, isCommon);
    }
    if (semantics[i].field !== undefined && translation[i].field !== undefined ) {
      // Look into sub field
      ns.updateCommonFieldsDefault([semantics[i].field], [translation[i].field], isCommon);
    }
  }
};

/**
 * Reset loaded libraries - i.e removes CSS added previously.
 * @method
 * @return {[type]}
 */
ns.resetLoadedLibraries = function () {
  ns.$('head style.h5p-editor-style').remove();
  H5PIntegration.loadedCss = [];
  H5PIntegration.loadedJs = [];
  ns.loadedCallbacks = [];
  ns.libraryLoaded = {};
  ns.libraryCache = {};
};

/**
 * Render common fields of content type with given machine name
 *
 * @param {string} machineName Machine name of content type with common fields
 * @param {Array} [libraries] Library data for machine name
 */
ns.renderCommonField = function (machineName, libraries) {
  var commonFields = ns.renderableCommonFields[machineName].fields;
  var renderableCommonFields = [];
  var ancestor;

commonFields.forEach(function (field) {
    if (!field.rendered) {
      var commonField = ns.addCommonField(
        field.field,
        field.parent,
        field.params,
        field.ancestor,
        true
      );
      if (commonField.setValues.length === 1) {
        renderableCommonFields.push({
          field: field,
          instance: commonField.instance
        });
        field.instance = commonField.instance;
      }
    }
    field.rendered = true;
  });

// Render common fields if found
  if (renderableCommonFields.length) {
    var libraryName = machineName === ns.constants.otherLibraries ? machineName
      : (machineName.length ? machineName.split(' ')[0] : '');
    if (libraries.length && libraries[0].title) {
      libraryName = libraries[0].title;
    }

// Create a library wrapper
    var hasLibraryWrapper = !!ns.renderableCommonFields[machineName].wrapper;
    var commonFieldsLibraryWrapper = ns.renderableCommonFields[machineName].wrapper;
    if (!hasLibraryWrapper) {
      commonFieldsLibraryWrapper = document.createElement('fieldset');
      var libraryWrapperClass = libraryName.replace(/\s+/g, '-').toLowerCase();

commonFieldsLibraryWrapper.classList.add('common-fields-library-wrapper');
      commonFieldsLibraryWrapper.classList.add('common-fields-' + libraryWrapperClass);

ns.renderableCommonFields[machineName].wrapper = commonFieldsLibraryWrapper;
    }

renderableCommonFields.forEach(function (commonField) {
      commonField.instance.appendTo(ns.$(commonFieldsLibraryWrapper));
      // Gather under a common ancestor
      if (commonField.field && commonField.field.ancestor) {
        ancestor = commonField.field.ancestor;

// Ensure that params are updated after common field instance is
        // appended since this ensures that defaults are set for common fields
        const field = commonField.field;
        const library = field.parent.currentLibrary;
        const fieldName = field.field.name;
        const ancestorField = ancestor.commonFields[library][fieldName];
        ancestorField.params = field.params[fieldName];
      }
    });

if (!hasLibraryWrapper && ancestor) {
      ancestor.$common[0].appendChild(commonFieldsLibraryWrapper);
    }
  }
};

/**
 * Recursively traverse parents to find the library our field belongs to
 *
 * @param parent
 * @returns {*}
 */
ns.getParentLibrary = function (parent) {
  if (!parent) {
    return null;
  }

if (parent.currentLibrary) {
    return parent.currentLibrary;
  }

return ns.getParentLibrary(parent.parent);
};

/**
 * Recursive processing of the semantics chunks.
 *
 * @param {array} semanticsChunk
 * @param {object} params
 * @param {jQuery} $wrapper
 * @param {mixed} parent
 * @param {string} [machineName] Machine name of library that is being processed
 * @returns {undefined}
 */
ns.processSemanticsChunk = function (semanticsChunk, params, $wrapper, parent, machineName) {
  var ancestor;
  parent.children = [];

if (parent.passReadies === undefined) {
    throw 'Widget tried to run processSemanticsChunk without handling ready callbacks. [field:' + parent.field.type + ':' + parent.field.name + ']';
  }

if (!parent.passReadies) {
    // If the parent can't pass ready callbacks we need to take care of them.
    parent.readies = [];
  }

for (var i = 0; i < semanticsChunk.length; i++) {
    var field = semanticsChunk[i];

// Check generic field properties.
    if (field.name === undefined) {
      throw ns.t('core', 'missingProperty', {':index': i, ':property': 'name'});
    }
    if (field.type === undefined) {
      throw ns.t('core', 'missingProperty', {':index': i, ':property': 'type'});
    }

// Set default value.
    if (params[field.name] === undefined && field['default'] !== undefined) {
      params[field.name] = field['default'];
    }

var widget = ns.getWidgetName(field);

// TODO: Remove later, this is here for debugging purposes.
    if (ns.widgets[widget] === undefined) {
      $wrapper.append('<div>[field:' + field.type + ':' + widget + ':' + field.name + ']</div>');
      continue;
    }

// Add common fields to bottom of form.
    if (field.common !== undefined && field.common) {
      if (ancestor === undefined) {
        ancestor = ns.findAncestor(parent);
      }

var parentLibrary = ns.getParentLibrary(parent);
      var library = machineName ? machineName
        : (field.library ? field.library
          : (parentLibrary ? parentLibrary
            : ns.constants.otherLibraries));
      ns.renderableCommonFields[library] = ns.renderableCommonFields[library] || {};
      ns.renderableCommonFields[library].fields = ns.renderableCommonFields[library].fields || [];

// Add renderable if it doesn't exist
      ns.renderableCommonFields[library].fields.push({
        field: field,
        parent: parent,
        params: params,
        ancestor: ancestor,
        rendered: false
      });
      continue;
    }

// Render all gathered common field
  if (ns.renderableCommonFields) {
    for (var commonFieldMachineName in ns.renderableCommonFields) {
      if (commonFieldMachineName === ns.constants.otherLibraries) {
        // No need to grab library info
        ns.renderCommonField(commonFieldMachineName);
      }
      else {
        // Get title for common fields group
        H5PEditor.LibraryListCache.getLibraries(
          [commonFieldMachineName],
          ns.renderCommonField.bind(this, commonFieldMachineName)
        );
      }
    }
  }

if (!parent.passReadies) {
    // Run ready callbacks.
    for (i = 0; i < parent.readies.length; i++) {
      parent.readies[i]();
    }
    delete parent.readies;
  }
};

/**
 * Attach ancestor of parent's common fields to a new wrapper
 *
 * @param {Object} parent Parent content type instance that common fields should be attached to
 * @param {HTMLElement} wrapper New wrapper of common fields
 */
ns.setCommonFieldsWrapper = function (parent, wrapper) {
  var ancestor = ns.findAncestor(parent);
  // Hide the ancestor whose children will be reattached elsewhere
  wrapper.appendChild(ancestor.$common[0]);
};

/**
 * Add a field to the common container.
 *
 * @param {object} field
 * @param {object} parent
 * @param {object} params
 * @param {object} ancestor
 * @param {boolean} [skipAppendTo] Skips appending the common field if set
 * @returns {undefined}
 */
ns.addCommonField = function (field, parent, params, ancestor, skipAppendTo) {
  var commonField;

// Group all fields based on library name + version
  if (ancestor.commonFields[parent.currentLibrary] === undefined) {
    ancestor.commonFields[parent.currentLibrary] = {};
  }

// Field name will have to be unique for library
  if (ancestor.commonFields[parent.currentLibrary][field.name] === undefined) {
    var widget = ns.getWidgetName(field);
    ancestor.commonFields[parent.currentLibrary][field.name] = {
      instance: new ns.widgets[widget](parent, field, params[field.name], function (field, value) {
        for (var i = 0; i < commonField.setValues.length; i++) {
          commonField.setValues[i](field, value);
        }
      }),
      setValues: [],
      parents: []
    };
  }

commonField = ancestor.commonFields[parent.currentLibrary][field.name];
  commonField.parents.push(ns.findLibraryAncestor(parent));
  commonField.setValues.push(function (field, value) {
    if (value === undefined) {
      delete params[field.name];
    }
    else {
      params[field.name] = value;
    }
  });

if (commonField.setValues.length === 1) {
    ancestor.$common.parent().removeClass('hidden');
    if (!skipAppendTo) {
      commonField.instance.appendTo(ancestor.$common);
    }
    commonField.params = params[field.name];
  }
  else {
    params[field.name] = commonField.params;
  }

parent.children.push(commonField.instance);
  return commonField;
};

/**
 * Find the nearest library ancestor. Used when adding commonfields.
 *
 * @param {object} parent
 * @returns {ns.findLibraryAncestor.parent|@exp;ns@call;findLibraryAncestor}
 */
ns.findLibraryAncestor = function (parent) {
  if (parent.parent === undefined || parent.field.type === 'library') {
    return parent;
  }
  return ns.findLibraryAncestor(parent.parent);
};

/**
 * getParentZebra
 *
 * Alternate the background color of fields
 *
 * @param parent
 * @returns {string} to determine background color of callee
 */
ns.getParentZebra = function (parent) {
  if (parent.zebra) {
    return parent.zebra;
  }
  else {
    return ns.getParentZebra(parent.parent);
  }
};

/**
 * Find the nearest ancestor which handles commonFields.
 *
 * @param {type} parent
 * @returns {@exp;ns@call;findAncestor|ns.findAncestor.parent}
 */
ns.findAncestor = function (parent) {
  if (parent.commonFields === undefined) {
    return ns.findAncestor(parent.parent);
  }
  return parent;
};

/**
 * Call remove on the given children.
 *
 * @param {Array} children
 * @returns {unresolved}
 */
ns.removeChildren = function (children) {
  if (children === undefined) {
    return;
  }

for (var i = 0; i < children.length; i++) {
    // Common fields will be removed by library.
    var isCommonField = (children[i].field === undefined ||
                         children[i].field.common === undefined ||
                         !children[i].field.common);

var hasRemove = (children[i].remove instanceof Function ||
                     typeof children[i].remove === 'function');

if (isCommonField && hasRemove) {
      children[i].remove();
    }
  }
};

/**
 * Find field from path.
 *
 * @param {String} path
 * @param {Object} parent
 * @returns {@exp;ns.Form@call;findField|Boolean}
 */
ns.findField = function (path, parent) {
  if (typeof path === 'string') {
    path = path.split('/');
  }

if (path[0] === '..') {
    path.splice(0, 1);
    return ns.findField(path, parent.parent);
  }
  if (parent.children) {
    for (var i = 0; i < parent.children.length; i++) {
      if (parent.children[i].field.name === path[0]) {
        path.splice(0, 1);
        if (path.length) {
          return ns.findField(path, parent.children[i]);
        }
        else {
          return parent.children[i];
        }
      }
    }
  }

return false;
};

/**
 * Find a semantics field in the semantics structure by name of the field
 * Will return the first found by depth first search if there are identically named fields
 *
 * @param {string} fieldName Name of the field we wish to find
 * @param {Object|Array} semanticsStructure Semantics we wish to find the field within
 * @returns {null|Object} Returns the field if found, otherwise null.
 */
ns.findSemanticsField = function (fieldName, semanticsStructure) {
  if (Array.isArray(semanticsStructure)) {
    for (let i = 0; i < semanticsStructure.length; i++) {
      var semanticsField = ns.findSemanticsField(fieldName, semanticsStructure[i]);
      if (semanticsField !== null) {
        // Return immediately if field is found
        return semanticsField;
      }
    }
    return null;
  }
  else if (semanticsStructure.name === fieldName) {
    return semanticsStructure;
  }
  else if (semanticsStructure.field) {
    // Process field
    return ns.findSemanticsField(fieldName, semanticsStructure.field);
  }
  else if (semanticsStructure.fields) {
    // Process fields
    return ns.findSemanticsField(fieldName, semanticsStructure.fields);
  }
  else {
    // No matching semantics found within known properties and list structures
    return null;
  }
};

/**
 * Follow a field and get all changes to its params.
 *
 * @param {Object} parent The parent object of the field.
 * @param {String} path Relative to parent object.
 * @param {Function} callback Gets called for params changes.
 * @returns {undefined}
 */
ns.followField = function (parent, path, callback) {
  if (path === undefined) {
    return;
  }

// Find field when tree is ready.
  parent.ready(function () {
    var def;

if (path instanceof Object) {
      // We have an object with default values
      def = H5P.cloneObject(path);

if (path.field === undefined) {
        callback(path, null);
        return; // Exit if we have no field to follow.
      }

path = def.field;
      delete def.field;
    }

var field = ns.findField(path, parent);

if (!field) {
      throw ns.t('core', 'unknownFieldPath', {':path': path});
    }
    if (field.changes === undefined) {
      throw ns.t('core', 'noFollow', {':path': path});
    }

var params = (field.params === undefined ? def : field.params);
    callback(params, field.changes.length + 1);

field.changes.push(function () {
      var params = (field.params === undefined ? def : field.params);
      callback(params);
    });
  });
};

/**
 * Create HTML wrapper for error messages.
 *
 * @param {String} message
 * @returns {String}
 */
ns.createError = function (message) {
  return '<p>' + message + '</p>';
};

/**
 * Turn a numbered importance into a string.
 *
 * @param {string} importance
 * @returns {String}
 */
ns.createImportance = function (importance) {
  return importance ? 'importance-' + importance : '';
};

/**
 * Create HTML wrapper for field items.
 * Makes sure the different elements are placed in an consistent order.
 *
 * @param {string} type
 * @param {string} [label]
 * @param {string} [description]
 * @param {string} [content]
 * @deprecated since version 1.12 (Jan. 2017, will be removed Jan. 2018). Use createFieldMarkup instead.
 * @see createFieldMarkup
 * @returns {string} HTML
 */
ns.createItem = function (type, label, description, content) {
  return '<div class="field ' + type + '">' +
           (label ? label : '') +
           (description ? '<div class="h5peditor-field-description">' + description + '</div>' : '') +
           (content ? content : '') +
           '<div class="h5p-errors"></div>' +
         '</div>';
};

/**
 * An object describing the semantics of a field
 * @typedef {Object} SemanticField
 * @property {string} name
 * @property {string} type
 * @property {string} label
 * @property {string} [importance]
 * @property {string} [description]
 * @property {string} [widget]
 * @property {boolean} [optional]
 */

/**
 * Create HTML wrapper for a field item.
 * Replacement for createItem()
 *
 * @since 1.12
 * @param  {SemanticField} field
 * @param  {string} content
 * @param  {string} [inputId]
 * @return {string}
 */
ns.createFieldMarkup = function (field, content, inputId) {
  content = content || '';
  var markup = this.createLabel(field, '', inputId) + this.createDescription(field.description, inputId) + content;

return this.wrapFieldMarkup(field, markup);
};

/**
 * Create HTML wrapper for a boolean field item.
 *
 * @param  {SemanticField} field
 * @param  {string} content
 * @param  {string} [inputId]
 *
 * @return {string}
 */
ns.createBooleanFieldMarkup = function (field, content, inputId) {
  var markup = '<label class="h5peditor-label">' +
    content + (field.label || field.name || '') + '</label>' +
    this.createDescription(field.description, inputId);

return this.wrapFieldMarkup(field, markup);
};

/**
 * Wraps a field with some metadata classes, and adds error field
 *
 * @param {SemanticField} field
 * @param {string} markup
 *
 * @private
 * @return {string}
 */
ns.wrapFieldMarkup = function (field, markup) {
  // removes undefined and joins
  var wrapperClasses = this.joinNonEmptyStrings(['field', 'field-name-' + field.name, field.type, ns.createImportance(field.importance), field.widget]);

// wrap and return
  return '<div class="' + wrapperClasses + '">' +
    markup +
    '<div class="h5p-errors"></div>' +
    '</div>';
};

/**
 * Joins an array of strings if they are defined and non empty
 *
 * @param {string[]} arr
 * @param {string} [separator] Default is space
 * @return {string}
 */
ns.joinNonEmptyStrings = function (arr, separator) {
  separator = separator || ' ';

return arr.filter(function (str) {
    return str !== undefined && str.length > 0;
  }).join(separator);
};

/**
 * Create HTML for select options.
 *
 * @param {String} value
 * @param {String} text
 * @param {Boolean} selected
 * @returns {String}
 */
ns.createOption = function (value, text, selected) {
  return '<option value="' + value + '"' + (selected !== undefined && selected ? ' selected="selected"' : '') + '>' + text + '</option>';
};

/**
 * Create HTML for text input.
 *
 * @param {String} value
 * @param {number} maxLength
 * @param {String} placeholder
 * @param {number} [id]
 * @param {number} [describedby]
 * @returns {String}
 */
ns.createText = function (value, maxLength, placeholder, id, describedby) {
  var html = '<input class="h5peditor-text" type="text"';

if (id !== undefined) {
    html += ' id="' + id + '"';
  }

if (describedby !== undefined) {
    html += ' aria-describedby="' + describedby + '"';
  }

if (value !== undefined) {
    html += ' value="' + value + '"';
  }

if (placeholder !== undefined) {
    html += ' placeholder="' + placeholder + '"';
  }

html += ' maxlength="' + (maxLength === undefined ? 255 : maxLength) + '"/>';

return html;
};

ns.getNextFieldId = (function (counter) {
  /**
   * Generates a consistent and unique field ID for the given field.
   *
   * @param {Object} field
   * @return {number}
   */
  return function (field) {
    return 'field-' + field.name.toLowerCase() +  '-' + (counter++);
  };
})(-1);

/**
 * Helps generates a consistent description ID across fields.
 *
 * @param {string} id
 * @return {string}
 */
ns.getDescriptionId = function (id) {
  return id + '-description';
};

/**
 * Create a label to wrap content in.
 *
 * @param {SemanticField} field
 * @param {String} [content]
 * @param {String} [inputId]
 * @returns {String}
 */
ns.createLabel = function (field, content, inputId) {
  // New items can be added next to the label within the flex-wrapper
  var html = '<label class="h5peditor-label-wrapper"';

if (inputId !== undefined) {
    html += ' for="' + inputId + '"';
  }
  html+= '>'

// Temporary fix for the old version of CoursePresentation's custom editor
  if (field.widget === 'coursepresentation' && field.name === 'presentation') {
    field.label = 0;
  }

if (field.label !== 0) {
    html += '<span class="h5peditor-label' + (field.optional ? '' : ' h5peditor-required') + '">' + (field.label === undefined ? field.name : field.label) + '</span>';
  }

return html + (content || '') + '</label>';
};

/**
 * Create a description
 * @param {String} description
 * @param {number} [inputId] Used to reference description from input
 * @returns {string}
 */
ns.createDescription = function (description, inputId) {
  var html = '';
  if (description !== undefined) {
    html += '<div class="h5peditor-field-description"';
    if (inputId !== undefined) {
      html += ' id="' + ns.getDescriptionId(inputId) + '"';
    }
    html += '>' + description + '</div>';
  }
  return html;
};

/**
 * Create an important description
 * @param {Object} importantDescription
 * @returns {String}
 */
ns.createImportantDescription = function (importantDescription) {
  var html = '';

if (importantDescription !== undefined) {
    html += '<div class="h5peditor-field-important-description">' +
              '<div class="important-description-tail">' +
              '</div>' +
              '<div class="important-description-close" role="button" tabindex="0" aria-label="' + ns.t('core', 'hideImportantInstructions') + '">' +
                '<span>' +
                   ns.t('core', 'hide') +
                '</span>' +
              '</div>' +
              '<span class="h5p-info-icon">' +
              '</span>' +
              '<span class="important-description-title">' +
                 ns.t('core', 'importantInstructions') +
              '</span>';

if (importantDescription.description !== undefined) {
      html += '<div class="important-description-content">' +
                 importantDescription.description +
              '</div>';
    }

if (importantDescription.example !== undefined) {
      html += '<div class="important-description-example">' +
                '<div class="important-description-example-title">' +
                  '<span>' +
                     ns.t('core', 'example') +
                  ':</span>' +
                '</div>' +
                '<div class="important-description-example-text">' +
                  '<span>' +
                     importantDescription.example +
                  '</span>' +
                '</div>' +
              '</div>';
    }

html += '</div>' +
            '<span class="important-description-show" role="button" tabindex="0">' +
              ns.t('core', 'showImportantInstructions') +
            '</span><span class="important-description-clear-right"></span>';
  }

return html;
};

/**
 * Bind events to important description
 * @param {Object} widget
 * @param {String} fieldName
 * @param {Object} parent
 */
ns.bindImportantDescriptionEvents = function (widget, fieldName, parent) {
  var context;

if (!widget.field.important) {
    return;
  }

// Generate a context string for using as referance in ex. localStorage.
  var librarySelector = ns.findLibraryAncestor(parent);
  if (librarySelector.currentLibrary !== undefined) {
    var lib = librarySelector.currentLibrary.split(' ')[0];
    context = (lib + '-' + fieldName).replace(/\.|_/g,'-') + '-important-description-open';
  }

// Set first occurance to visible
  ns.storage.get(context, function (value) {
    if (value === undefined || value === true) {
      widget.$item.addClass('important-description-visible');
    }
  });

widget.$item.addClass('has-important-description');

// Bind events to toggle button and update aria-pressed
  widget.$item.find('.important-description-show')
    .click(function () {
      widget.$item.addClass('important-description-visible');
      ns.storage.set(context, true);
    })
    .keydown(function (event) {
      if (event.which == 13 || event.which == 32) {
        ns.$(this).trigger('click');
        event.preventDefault();
      }
    });

// Bind events to close button and update aria-pressed of toggle button
  widget.$item.find('.important-description-close')
    .click(function () {
      widget.$item.removeClass('important-description-visible');
      ns.storage.set(context, false);
    })
    .keydown(function (event) {
      if (event.which == 13 || event.which == 32) {
        ns.$(this).trigger('click');
        event.preventDefault();
      }
    });
};

/**
 * Generate markup for the copy and paste buttons.
 *
 * @returns {string} HTML
 */
ns.createCopyPasteButtons = function () {
  return '<div class="h5peditor-copypaste-wrap">' +
           '<button class="h5peditor-copy-button disabled" title="' + H5PEditor.t('core', 'copyToClipboard') + '" disabled>' + ns.t('core', 'copyButton') + '</button>' +
           '<button class="h5peditor-paste-button disabled" title="' + H5PEditor.t('core', 'pasteFromClipboard') + '" disabled>' + ns.t('core', 'pasteButton') + '</button>' +
         '</div><div class="h5peditor-clearfix"></div>';
};

/**
 * Confirm replace if there is content selected
 *
 * @param {string} library Current selected library
 * @param {number} top Offset
 * @param {function} next Next callback
 */
ns.confirmReplace = function (library, top, next) {
  if (library) {
    // Confirm changing library
    var confirmReplace = new H5P.ConfirmationDialog({
      headerText: H5PEditor.t('core', 'pasteContent'),
      dialogText: H5PEditor.t('core', 'confirmPasteContent'),
      confirmText: H5PEditor.t('core', 'confirmPasteButtonText')
    }).appendTo(document.body);
    confirmReplace.on('confirmed', next);
    confirmReplace.show(top);
  }
  else {
    // No need to confirm
    next();
  }
};

/**
 * Check if any errors has been set.
 *
 * @param {jQuery} $errors
 * @param {jQuery} $input
 * @param {String} value
 * @returns {mixed}
 */
ns.checkErrors = function ($errors, $input, value) {
  if ($errors.children().length) {
    $input.keyup(function (event) {
      if (event.keyCode === 9) { // TAB
        return;
      }
      $errors.html('');
      $input.removeClass('error');
      $input.unbind('keyup');
    });

return false;
  }
  return value;
};

/**
 * @param {object} library
 *  with machineName, majorVersion and minorVersion params
 * @returns {string}
 *  Concatinated version of the library
 */
ns.libraryToString = function (library) {
  return library.name + ' ' + library.majorVersion + '.' + library.minorVersion;
};

/**
 * TODO: Remove from here, and use from H5P instead(move this to the h5p.js...)
 *
 * @param {string} library
 *  library in the format machineName majorVersion.minorVersion
 * @returns
 *  library as an object with machineName, majorVersion and minorVersion properties
 *  return false if the library parameter is invalid
 */
ns.libraryFromString = function (library) {
  var regExp = /(.+)\s(\d+)\.(\d+)$/g;
  var res = regExp.exec(library);
  if (res !== null) {
    return {
      'machineName': res[1],
      'majorVersion': res[2],
      'minorVersion': res[3]
    };
  }
  else {
    H5P.error('Invalid überName');
    return false;
  }
};

/**
 * Helper function for detecting field widget.
 *
 * @param {Object} field
 * @returns {String} Widget name
 */
ns.getWidgetName = function (field) {
  return (field.widget === undefined ? field.type : field.widget);
};

/**
 * Mimics how php's htmlspecialchars works (the way we uses it)
 */
ns.htmlspecialchars = function (string) {
  return string.toString().replace(/</g, '&lt;').replace(/>/g, '&gt;').replace(/'/g, '&#039;').replace(/"/g, '&quot;');
};

/**
 * Makes it easier to add consistent buttons across the editor widget.
 *
 * @param {string} id Typical CSS class format
 * @param {string} title Human readable format
 * @param {function} handler Action handler when triggered
 * @param {boolean} [displayTitle=false] Show button with text
 * @return {H5P.jQuery}
 */
ns.createButton = function (id, title, handler, displayTitle) {
  var options = {
    class: 'h5peditor-button ' + (displayTitle ? 'h5peditor-button-textual ' : '') + id,
    role: 'button',
    tabIndex: 0,
    'aria-disabled': 'false',
    on: {
      click: function () {
        handler.call(this);
      },
      keydown: function (event) {
        switch (event.which) {
          case 13: // Enter
          case 32: // Space
            handler.call(this);
            event.preventDefault();
        }
      }
    }
  };

// Determine if we're a icon only button or have a textual label
  options[displayTitle ? 'html' : 'aria-label'] = title;

return ns.$('<div/>', options);
};

/**
 * Check if the current library is entitled for the metadata button. True by default.
 *
 * It will probably be okay to remove this check at some point in time when
 * the majority of content types and plugins have been updated to a version
 * that supports the metadata system.
 *
 * @param {string} library - Current library.
 * @return {boolean} True, if form should have the metadata button.
 */
ns.enableMetadata = function (library) {

if (!library || typeof library !== 'string') {
    return false;
  }

library = H5P.libraryFromString(library);
  if (!library) {
    return false;
  }

// This list holds all old libraries (/older versions implicitly) that need an update for metadata
  const blackList = [
    // Should never have metadata because it does not make sense
    'H5P.IVHotspot 1.2',
    'H5P.Link 1.3',
    'H5P.TwitterUserFeed 1.0',
    'H5P.GoToQuestion 1.3',
    'H5P.Nil 1.0',

// Copyright information moved to metadata
    'H5P.Audio 1.2',
    'H5P.Video 1.4',
    'H5P.Image 1.0',

// Title moved to metadata
    'H5P.DocumentExportPage 1.3',
    'H5P.ExportableTextArea 1.2',
    'H5P.GoalsAssessmentPage 1.3',
    'H5P.GoalsPage 1.4',
    'H5P.StandardPage 1.3',
    'H5P.DragQuestion 1.12',
    'H5P.ImageHotspotQuestion 1.7',

// Custom editor changed
    'H5P.CoursePresentation 1.19',
    'H5P.InteractiveVideo 1.19'
  ];

let block = blackList.filter(function (item) {
    // + ' ' makes sure to avoid partial matches
    return item.indexOf(library.machineName + ' ') !== -1;
  });
  if (block.length === 0) {
    return true;
  }

block = H5P.libraryFromString(block[0]);
  if (library.majorVersion > block.majorVersion || library.majorVersion === block.majorVersion && library.minorVersion > block.minorVersion) {
    return true;
  }

return false;
};

// Backwards compatibilty
ns.attachToastTo = H5P.attachToastTo;

/**
 * Check if clipboard can be pasted.
 *
 * @param {Object} clipboard Clipboard data.
 * @param {Object} libs Libraries to compare against.
 * @return {boolean} True, if content can be pasted.
 */
ns.canPaste = function (clipboard, libs) {
  return (this.canPastePlus(clipboard, libs)).canPaste;
};

/**
 * Check if clipboard can be pasted and give reason if not.
 *
 * @param {Object} clipboard Clipboard data.
 * @param {Object} libs Libraries to compare against.
 * @return {Object} Results. {canPaste: boolean, reason: string, description: string}.
 */
ns.canPastePlus = function (clipboard, libs) {
  // Clipboard is empty
  if (!clipboard || !clipboard.generic) {
    return {
      canPaste: false,
      reason: 'pasteNoContent',
      description: ns.t('core', 'pasteNoContent')
    };
  }

// No libraries to compare to
  if (libs === undefined) {
    return {
      canPaste: false,
      reason: 'pasteError',
      description: ns.t('core', 'pasteError')
    };
  }

// Translate Hub format to common library format
  if (libs.libraries !== undefined) {
    libs = libs.libraries;
    libs.forEach(function (lib) {
      lib.name = lib.machineName;
      lib.majorVersion = lib.localMajorVersion;
      lib.minorVersion = lib.localMinorVersion;
    });
  }

// Check if clipboard library type is available
  const machineNameClip = clipboard.generic.library.split(' ')[0];
  let candidates = libs.filter(function (library) {
    return library.name === machineNameClip;
  });
  if (candidates.length === 0) {
    return {
      canPaste: false,
      reason: 'pasteContentNotSupported',
      description: ns.t('core', 'pasteContentNotSupported')
    };
  }

// Check if clipboard library version is available
  const versionClip = clipboard.generic.library.split(' ')[1];
  for (let i = 0; i < candidates.length; i++) {
    if (candidates[i].majorVersion + '.' + candidates[i].minorVersion === versionClip) {
      if (candidates[i].restricted !== true) {
        return {
          canPaste: true
        };
      }
      else {
        return {
          canPaste: false,
          reason: 'pasteContentRestricted',
          description: ns.t('core', 'pasteContentRestricted')
        };
      }
    }
  }

// Sort remaining candidates by version number
  candidates = candidates
    .map(function (candidate) {
      return '' + candidate.majorVersion + '.' + candidate.minorVersion;
    })
    .map(function (candidate) {
      return candidate.replace(/\d+/g, function (d) {
        return +d + 1000;
      });
    })
    .sort()
    .map(function (candidate) {
      return candidate.replace(/\d+/g, function (d) {
        return +d - 1000;
      });
    });

// Clipboard library is newer than latest available local library
  const candidateMax = candidates.slice(-1)[0];
  if (+candidateMax.split('.')[0] < +versionClip.split('.')[0] ||
      (+candidateMax.split('.')[0] === +versionClip.split('.')[0] &&
      +candidateMax.split('.')[1] < +versionClip.split('.')[1])) {
    return {
      canPaste: false,
      reason: 'pasteTooNew',
      description: ns.t('core', 'pasteTooNew', {
        ':clip': versionClip,
        ':local': candidateMax
      })
    };
  }

// Clipboard library is older than latest available local library
  const candidateMin = candidates.slice(0, 1)[0];
  if (+candidateMin.split('.')[0] > +versionClip.split('.')[0] ||
      (+candidateMin.split('.')[0] === +versionClip.split('.')[0] &&
       +candidateMin.split('.')[1] > +versionClip.split('.')[1])) {
    return {
      canPaste: false,
      reason: 'pasteTooOld',
      description: ns.t('core', 'pasteTooOld', {
        ':clip': versionClip,
        ':local': candidateMin
      })
    };
  }

return {
    canPaste: false,
    reason: 'pasteError',
    description: ns.t('core', 'pasteError')
  };
};

// Factory for creating storage instance
ns.storage = (function () {
  var instance = {
    get: function (key, next) {
      var value;

// Get value from browser storage
      if (window.localStorage !== undefined) {
        value = !!window.localStorage.getItem(key);
      }

// Try to get a better value from user data storage
      try {
        H5P.getUserData(0, key, function (err, result) {
          if (!err) {
            value = result;
          }
          next(value);
        });
      }
      catch (err) {
        next(value);
      }
    },
    set: function (key, value) {

// Store in browser
      if (window.localStorage !== undefined) {
        window.localStorage.setItem(key, value);
      }

// Try to store in user data storage
      try {
        H5P.setUserData(0, key, value);
      }
      catch (err) { /*Intentionally left empty*/ }
    }
  };
  return instance;
})();

/**
 * Small helper class for library data.
 *
 * @class
 * @param {string} nameVersionString
 */
ns.ContentType = function ContentType(nameVersionString) {
  const libraryNameSplit = nameVersionString.split(' ');
  const libraryVersionSplit = libraryNameSplit[1].split('.');

this.machineName = libraryNameSplit[0];
  this.majorVersion = libraryVersionSplit[0];
  this.minorVersion = libraryVersionSplit[1];
};

/**
 * Look for the best possible upgrade for the given library
 *
 * @param {ns.ContentType} library
 * @param {Array} libraries Where to look
 */
ns.ContentType.getPossibleUpgrade = function (library, libraries) {
  let possibleUpgrade;

for (let i = 0; i < libraries.length; i++) {
    const candiate = libraries[i];
    if (candiate.installed !== false && ns.ContentType.hasSameName(candiate, library) && ns.ContentType.isHigherVersion(candiate, library)) {

// Check if the upgrade is better than the previous upgrade we found
      if (!possibleUpgrade || ns.ContentType.isHigherVersion(candiate, possibleUpgrade)) {
        possibleUpgrade = candiate;
      }
    }
  }

return possibleUpgrade;
};

/**
 * Check if candiate is a higher version than original.
 *
 * @param {Object} candiate Library object
 * @param {Object} original Library object
 * @returns {boolean}
 */
ns.ContentType.isHigherVersion = function (candiate, original) {
  return (ns.ContentType.getMajorVersion(candiate) > ns.ContentType.getMajorVersion(original) ||
    (ns.ContentType.getMajorVersion(candiate) == ns.ContentType.getMajorVersion(original) &&
     ns.ContentType.getMinorVersion(candiate) > ns.ContentType.getMinorVersion(original)));
};

/**
 * Check if candiate has same name as original.
 *
 * @param {Object} candiate Library object
 * @param {Object} original Library object
 * @returns {boolean}
 */
ns.ContentType.hasSameName = function (candiate, original) {
  return (ns.ContentType.getName(candiate) === ns.ContentType.getName(original));
};

/**
 * Check if candiate has same name as original.
 *
 * @param {Object} candiate Library object
 * @param {Object} original Library object
 * @returns {string}
 */
ns.ContentType.getNameVersionString = function (library) {
  return ns.ContentType.getName(library) + ' ' + ns.ContentType.getMajorVersion(library) + '.' + ns.ContentType.getMinorVersion(library);
};

/**
 * Get the major version from a library object.
 *
 * @param {Object} library
 * @returns {number}
 */
ns.ContentType.getMajorVersion = function (library) {
  return parseInt((library.localMajorVersion !== undefined ? library.localMajorVersion : library.majorVersion));
};

/**
 * Get the minor version from a library object.
 *
 * @param {Object} library
 * @returns {number}
 */
ns.ContentType.getMinorVersion = function (library) {
  return parseInt((library.localMinorVersion !== undefined ? library.localMinorVersion : library.minorVersion));
};

/**
 * Get the name from a library object.
 *
 * @param {Object} library
 * @returns {string}
 */
ns.ContentType.getName = function (library) {
  return (library.machineName !== undefined ? library.machineName : library.name);
};

ns.upgradeContent = (function () {

/**
   * A wrapper for loading library data for the content upgrade scripts.
   *
   * @param {string} name Library name
   * @param {H5P.Version} version
   * @param {Function} next Callback
   */
  const loadLibrary = function (name, version, next) {
    const library = name + ' ' + version.major + '.' + version.minor;
    ns.loadLibrary(library, function () {
      next(null, ns.libraryCache[library]);
    });
  };

return function contentUpgrade(fromLibrary, toLibrary, parameters, done) {
    ns.loadJs(H5PIntegration.libraryUrl + '/h5p-version.js' + H5PIntegration.pluginCacheBuster, function (err) {
      ns.loadJs(H5PIntegration.libraryUrl + '/h5p-content-upgrade-process.js' + H5PIntegration.pluginCacheBuster, function (err) {
        // TODO: Avoid stringify the parameters
        new H5P.ContentUpgradeProcess(ns.ContentType.getName(fromLibrary), new H5P.Version(fromLibrary), new H5P.Version(toLibrary), JSON.stringify(parameters), 1, function (name, version, next) {
          loadLibrary(name, version, function (err, library) {
            if (library.upgradesScript) {
              ns.loadJs(library.upgradesScript, function (err) {
                if (err) {
                  err = 'Error loading upgrades ' + name + ' ' + version;
                }
                next(err, library);
              });
            }
            else {
              next(null, library);
            }
          });

}, function (err, result) {
          if (err) {
            let header = 'Failed';
            let message = 'Could not upgrade content';
            switch (err.type) {
              case 'errorTooHighVersion':
                message += ': ' + ns.t('core', 'errorTooHighVersion', {'%used': err.used, '%supported': err.supported});
                break;

case 'errorNotSupported':
                message += ': ' + ns.t('core', 'errorNotSupported', {'%used': err.used});
                break;

case 'errorParamsBroken':
                message += ': ' + ns.t('core', 'errorParamsBroken');
                break;

case 'libraryMissing':
                message += ': ' +  ns.t('core', 'libraryMissing', {'%lib': err.library});
                break;

case 'scriptMissing':
                message += ': ' + ns.t('core', 'scriptMissing', {'%lib': err.library});
                break;
            }

var confirmErrorDialog = new H5P.ConfirmationDialog({
              headerText: header,
              dialogText: message,
              confirmText: 'Continue'
            }).appendTo(document.body);
            confirmErrorDialog.show();
          }
          done(err, result);
        });
      });
    });
  };
})();

// List of language code mappings used by the editor
ns.supportedLanguages = {
  'aa': 'Afar',
  'ab': 'Abkhazian (аҧсуа бызшәа)',
  'ae': 'Avestan',
  'af': 'Afrikaans',
  'ak': 'Akan',
  'am': 'Amharic (አማርኛ)',
  'ar': 'Arabic (العربية)',
  'as': 'Assamese',
  'ast': 'Asturian',
  'av': 'Avar',
  'ay': 'Aymara',
  'az': 'Azerbaijani (azərbaycan)',
  'ba': 'Bashkir',
  'be': 'Belarusian (Беларуская)',
  'bg': 'Bulgarian (Български)',
  'bh': 'Bihari',
  'bi': 'Bislama',
  'bm': 'Bambara (Bamanankan)',
  'bn': 'Bengali',
  'bo': 'Tibetan',
  'br': 'Breton',
  'bs': 'Bosnian (Bosanski)',
  'ca': 'Catalan (Català)',
  'ce': 'Chechen',
  'ch': 'Chamorro',
  'co': 'Corsican',
  'cr': 'Cree',
  'cs': 'Czech (Čeština)',
  'cu': 'Old Slavonic',
  'cv': 'Chuvash',
  'cy': 'Welsh (Cymraeg)',
  'da': 'Danish (Dansk)',
  'de': 'German (Deutsch)',
  'dv': 'Maldivian',
  'dz': 'Bhutani',
  'ee': 'Ewe (Ɛʋɛ)',
  'el': 'Greek (Ελληνικά)',
  'en': 'English',
  'en-gb': 'English, British',
  'eo': 'Esperanto',
  'es': 'Spanish (Español)',
  'es-mx': 'Spanish, Mexican',
  'et': 'Estonian (Eesti)',
  'eu': 'Basque (Euskera)',
  'fa': 'Persian (فارسی)',
  'ff': 'Fulah (Fulfulde)',
  'fi': 'Finnish (Suomi)',
  'fil': 'Filipino',
  'fj': 'Fiji',
  'fo': 'Faeroese',
  'fr': 'French (Français)',
  'fy': 'Frisian (Frysk)',
  'ga': 'Irish (Gaeilge)',
  'gd': 'Scots Gaelic',
  'gl': 'Galician (Galego)',
  'gn': 'Guarani',
  'gsw-berne': 'Swiss German',
  'gu': 'Gujarati',
  'gv': 'Manx',
  'ha': 'Hausa',
  'he': 'Hebrew (עברית)',
  'hi': 'Hindi (हिन्दी)',
  'ho': 'Hiri Motu',
  'hr': 'Croatian (Hrvatski)',
  'hsb': 'Upper Sorbian (hornjoserbšćina)',
  'ht': 'Haitian Creole',
  'hu': 'Hungarian (Magyar)',
  'hy': 'Armenian (Հայերեն)',
  'hz': 'Herero',
  'ia': 'Interlingua',
  'id': 'Indonesian (Bahasa Indonesia)',
  'ie': 'Interlingue',
  'ig': 'Igbo',
  'ik': 'Inupiak',
  'is': 'Icelandic (Íslenska)',
  'it': 'Italian (Italiano)',
  'iu': 'Inuktitut',
  'ja': 'Japanese (日本語)',
  'jv': 'Javanese',
  'ka': 'Georgian',
  'kg': 'Kongo',
  'ki': 'Kikuyu',
  'kj': 'Kwanyama',
  'kk': 'Kazakh (Қазақ)',
  'kl': 'Greenlandic',
  'km': 'Cambodian',
  'kn': 'Kannada (ಕನ್ನಡ)',
  'ko': 'Korean (한국어)',
  'kr': 'Kanuri',
  'ks': 'Kashmiri',
  'ku': 'Kurdish (Kurdî)',
  'kv': 'Komi',
  'kw': 'Cornish',
  'ky': 'Kyrgyz (Кыргызча)',
  'la': 'Latin (Latina)',
  'lb': 'Luxembourgish',
  'lg': 'Luganda',
  'ln': 'Lingala',
  'lo': 'Laothian',
  'lt': 'Lithuanian (Lietuvių)',
  'lv': 'Latvian (Latviešu)',
  'mg': 'Malagasy',
  'mh': 'Marshallese',
  'mi': 'Māori',
  'mk': 'Macedonian (Македонски)',
  'ml': 'Malayalam (മലയാളം)',
  'mn': 'Mongolian',
  'mo': 'Moldavian',
  'mr': 'Marathi',
  'ms': 'Malay (Bahasa Melayu)',
  'mt': 'Maltese (Malti)',
  'my': 'Burmese',
  'na': 'Nauru',
  'nd': 'North Ndebele',
  'ne': 'Nepali',
  'ng': 'Ndonga',
  'nl': 'Dutch (Nederlands)',
  'nb': 'Norwegian Bokmål (Bokmål)',
  'nn': 'Norwegian Nynorsk (Nynorsk)',
  'nr': 'South Ndebele',
  'nv': 'Navajo',
  'ny': 'Chichewa',
  'oc': 'Occitan',
  'om': 'Oromo',
  'or': 'Oriya',
  'os': 'Ossetian',
  'pa': 'Punjabi',
  'pi': 'Pali',
  'pl': 'Polish (Polski)',
  'ps': 'Pashto (پښتو)',
  'pt': 'Portuguese, International',
  'pt-pt': 'Portuguese, Portugal (Português)',
  'pt-br': 'Portuguese, Brazil (Português)',
  'qu': 'Quechua',
  'rm': 'Rhaeto-Romance',
  'rn': 'Kirundi',
  'ro': 'Romanian (Română)',
  'ru': 'Russian (Русский)',
  'rw': 'Kinyarwanda',
  'sa': 'Sanskrit',
  'sc': 'Sardinian',
  'sco': 'Scots',
  'sd': 'Sindhi',
  'se': 'Northern Sami',
  'sg': 'Sango',
  'sh': 'Serbo-Croatian',
  'si': 'Sinhala (සිංහල)',
  'sk': 'Slovak (Slovenčina)',
  'sl': 'Slovenian (Slovenščina)',
  'sm': 'Samoan',
  'sma': 'Sámi (Southern)',
  'sme': 'Sámi (Northern)',
  'smj': 'Sámi (Lule)',
  'sn': 'Shona',
  'so': 'Somali',
  'sq': 'Albanian (Shqip)',
  'sr': 'Serbian (Српски)',
  'ss': 'Siswati',
  'st': 'Sesotho',
  'su': 'Sudanese',
  'sv': 'Swedish (Svenska)',
  'sw': 'Swahili (Kiswahili)',
  'ta': 'Tamil (தமிழ்)',
  'te': 'Telugu (తెలుగు)',
  'tg': 'Tajik',
  'th': 'Thai (ภาษาไทย)',
  'ti': 'Tigrinya',
  'tk': 'Turkmen',
  'tl': 'Tagalog',
  'tn': 'Setswana',
  'to': 'Tonga',
  'tr': 'Turkish (Türkçe)',
  'ts': 'Tsonga',
  'tt': 'Tatar (Tatarça)',
  'tw': 'Twi',
  'ty': 'Tahitian',
  'ug': 'Uyghur',
  'uk': 'Ukrainian (Українська)',
  'ur': 'Urdu (اردو)',
  'uz': "Uzbek (o'zbek)",
  've': 'Venda',
  'vi': 'Vietnamese (Tiếng Việt)',
  'wo': 'Wolof',
  'xh': 'Xhosa (isiXhosa)',
  'xx-lolspeak': 'Lolspeak)',
  'yi': 'Yiddish',
  'yo': 'Yoruba (Yorùbá)',
  'za': 'Zhuang',
  'zh': 'Chinese',
  'zh-hans': 'Chinese, Simplified (简体中文)',
  'zh-hant': 'Chinese, Traditional (繁體中文)',
  'zh-tw': 'Chinese, Taiwan, Traditional',
  'zu': 'Zulu (isiZulu)'
};

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