cmmn-js-properties-panel/lib/Utils.js

A simple properties panel for cmmn-js

'use strict';

var Ids = require('ids');

var SPACE_REGEX = /\s/;

// for QName validation as per http://www.w3.org/TR/REC-xml/#NT-NameChar
var QNAME_REGEX = /^([a-z][\w-.]*:)?[a-z_][\w-.]*$/i;

// for ID validation as per CMMN Schema (QName - Namespace)
var ID_REGEX = /^[a-z_][\w-.]*$/i;

var HTML_ESCAPE_MAP = {
  '&': '&',
  '<': '&lt;',
  '>': '&gt;',
  '"': '&quot;',
  '\'': '&#39;'
};

/**
 * adds an empty option to the list
 */
function addEmptyParameter(list) {
  return list.push({ 'label': '', 'value': '', 'name': '' });
}

module.exports.addEmptyParameter = addEmptyParameter;


/**
 * checks whether the id value is valid
 *
 * @param {ModdleElement} bo
 * @param {String} idValue
 * @param {Function} translate
 *
 * @return {String} error message
 */
function isIdValid(bo, idValue, translate) {
  var assigned = bo.$model.ids.assigned(idValue);

  var idExists = assigned && assigned !== bo;

  if (!idValue || idExists) {
    return translate('Element must have an unique id.');
  }

  return validateId(idValue, translate);
}

module.exports.isIdValid = isIdValid;


function validateId(idValue, translate) {

  if (containsSpace(idValue)) {
    return translate('Id must not contain spaces.');
  }

  if (!ID_REGEX.test(idValue)) {

    if (QNAME_REGEX.test(idValue)) {
      return translate('Id must not contain prefix.');
    }

    return translate('Id must be a valid QName.');
  }
}

module.exports.validateId = validateId;


function containsSpace(value) {
  return SPACE_REGEX.test(value);
}

module.exports.containsSpace = containsSpace;

/**
 * generate a semantic id with given prefix
 */
function nextId(prefix) {
  var ids = new Ids([32,32,1]);

  return ids.nextPrefixed(prefix);
}

module.exports.nextId = nextId;


function triggerClickEvent(element) {
  var evt;
  var eventType = 'click';

  if (document.createEvent) {
    try {
      // Chrome, Safari, Firefox
      evt = new MouseEvent((eventType), { view: window, bubbles: true, cancelable: true });
    } catch (e) {
      // IE 11, PhantomJS (wat!)
      evt = document.createEvent('MouseEvent');

      evt.initEvent((eventType), true, true);
    }
    return element.dispatchEvent(evt);
  } else {
    // Welcome IE
    evt = document.createEventObject();

    return element.fireEvent('on' + eventType, evt);
  }
}

module.exports.triggerClickEvent = triggerClickEvent;


function escapeHTML(str) {
  str = '' + str;

  return str && str.replace(/[&<>"']/g, function(match) {
    return HTML_ESCAPE_MAP[match];
  });
}

module.exports.escapeHTML = escapeHTML;