dynatrace-cordova-outsystems-plugin/node_modules/cssstyle/lib/properties/backgroundPosition.js

This plugin gives you the ability to use the Dynatrace instrumentation in your hybrid application (Cordova, Ionic, ..). It uses the Mobile Agent, the JavaScript Agent and the Javascript Bridge. The Mobile Agent will give you all device specific values con

'use strict';

var parsers = require('../parsers');

var valid_keywords = ['top', 'center', 'bottom', 'left', 'right'];

var parse = function parse(v) {
  if (v === '' || v === null) {
    return undefined;
  }
  var parts = v.split(/\s+/);
  if (parts.length > 2 || parts.length < 1) {
    return undefined;
  }
  var types = [];
  parts.forEach(function(part, index) {
    types[index] = parsers.valueType(part);
  });
  if (parts.length === 1) {
    if (types[0] === parsers.TYPES.LENGTH || types[0] === parsers.TYPES.PERCENT) {
      return v;
    }
    if (types[0] === parsers.TYPES.KEYWORD) {
      if (valid_keywords.indexOf(v.toLowerCase()) !== -1 || v.toLowerCase() === 'inherit') {
        return v;
      }
    }
    return undefined;
  }
  if (
    (types[0] === parsers.TYPES.LENGTH || types[0] === parsers.TYPES.PERCENT) &&
    (types[1] === parsers.TYPES.LENGTH || types[1] === parsers.TYPES.PERCENT)
  ) {
    return v;
  }
  if (types[0] !== parsers.TYPES.KEYWORD || types[1] !== parsers.TYPES.KEYWORD) {
    return undefined;
  }
  if (valid_keywords.indexOf(parts[0]) !== -1 && valid_keywords.indexOf(parts[1]) !== -1) {
    return v;
  }
  return undefined;
};

module.exports.isValid = function isValid(v) {
  return parse(v) !== undefined;
};

module.exports.definition = {
  set: function(v) {
    this._setProperty('background-position', parse(v));
  },
  get: function() {
    return this.getPropertyValue('background-position');
  },
  enumerable: true,
  configurable: true,
};