@enact/webos/application/application.js

webOS support library

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.platformBack = exports.fetchAppRootPath = exports.fetchAppInfo = exports.fetchAppId = void 0;
/* eslint-disable no-console */

/**
 * Provides a collection of functions for fetching application metadata.
 *
 * @module webos/application
 * @exports fetchAppId,
 * @exports fetchAppInfo,
 * @exports fetchAppRootPath,
 * @exports platformBack
 */

var appInfo = {};

/**
 * Fetches the appID of the caller app.
 *
 * @function
 * @returns {String} AppID of the app
 * @memberof webos/application
 * @public
 */
var fetchAppId = exports.fetchAppId = function fetchAppId() {
  var _window$webOSSystem;
  var webOSSystem = (_window$webOSSystem = window.webOSSystem) !== null && _window$webOSSystem !== void 0 ? _window$webOSSystem : window.PalmSystem;
  if (webOSSystem && webOSSystem.identifier) {
    // webOSSystem.identifier: <appid> <processid>
    return webOSSystem.identifier.split(' ')[0];
  }
};

/**
 * The callback signature for `fetchAppInfo`
 *
 * @callback appInfoCallback
 * @param {?object} info - JSON data object read from the app's *appinfo.json* file. `undefined` if not found.
 * @memberof webos/application
 */

/**
 * Fetches the *appinfo.json* data of the caller app.
 *
 * @function
 * @param {webos/application~appInfoCallback} callback - Called upon completion
 * @param {String} [path] - Optional relative filepath to a specific *appinfo.json* to read
 * @returns {undefined}
 * @memberof webos/application
 * @public
 */
var fetchAppInfo = exports.fetchAppInfo = function fetchAppInfo(callback, path) {
  if (Object.keys(appInfo).length === 0) {
    var parseInfo = function parseInfo(err, info) {
      if (!err && info) {
        try {
          appInfo = JSON.parse(info);
          if (callback) callback(appInfo);
        } catch (e) {
          console.error('Unable to parse appinfo.json file for ' + fetchAppId);
          if (callback) callback();
        }
      } else if (callback) {
        callback();
      }
    };
    var req = new window.XMLHttpRequest();
    req.onreadystatechange = function () {
      if (req.readyState === 4) {
        if (req.status >= 200 && req.status < 300 || req.status === 0) {
          parseInfo(null, req.responseText);
        } else {
          parseInfo({
            status: 404
          });
        }
      }
    };
    try {
      req.open('GET', path || 'appinfo.json', true);
      req.send(null);
    } catch (e) {
      parseInfo({
        status: 404
      });
    }
  } else if (callback) {
    callback(appInfo);
  }
};

/**
 * Fetches the full root URI (path) of the caller app.
 *
 * @function
 * @returns {String} App's URI (application install path)
 * @memberof webos/application
 * @public
 */
var fetchAppRootPath = exports.fetchAppRootPath = function fetchAppRootPath() {
  var base = window.location.href;
  if ('baseURI' in window.document) {
    base = window.document.baseURI;
  } else {
    var baseTags = window.document.getElementsByTagName('base');
    if (baseTags.length > 0) {
      base = baseTags[0].href;
    }
  }
  var match = base.match(new RegExp('.*://[^#]*/'));
  if (match) {
    return match[0];
  }
  return '';
};

/**
 * Emulate the remote *back* key.
 *
 * @function
 * @returns {undefined}
 * @memberof webos/application
 * @public
 */
var platformBack = exports.platformBack = function platformBack() {
  var _window$webOSSystem2;
  var webOSSystem = (_window$webOSSystem2 = window.webOSSystem) !== null && _window$webOSSystem2 !== void 0 ? _window$webOSSystem2 : window.PalmSystem;
  if (webOSSystem && webOSSystem.platformBack) {
    return webOSSystem.platformBack();
  }
};