Jobqiangdan32Client/assets/cordova/plugins/org.apache.cordova.battery-status/www/battery.js

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cordova.define("org.apache.cordova.battery-status.battery", function(require, exports, module) { /*
 *
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 *
*/

/**
 * This class contains information about the current battery status.
 * @constructor
 */
var cordova = require('cordova'),
    exec = require('cordova/exec');

function handlers() {
  return battery.channels.batterystatus.numHandlers +
         battery.channels.batterylow.numHandlers +
         battery.channels.batterycritical.numHandlers;
}

var STATUS_CRITICAL = 5;
var STATUS_LOW = 20;

var Battery = function() {
    this._level = null;
    this._isPlugged = null;
    // Create new event handlers on the window (returns a channel instance)
    this.channels = {
      batterystatus:cordova.addWindowEventHandler("batterystatus"),
      batterylow:cordova.addWindowEventHandler("batterylow"),
      batterycritical:cordova.addWindowEventHandler("batterycritical")
    };
    for (var key in this.channels) {
        this.channels[key].onHasSubscribersChange = Battery.onHasSubscribersChange;
    }
};
/**
 * Event handlers for when callbacks get registered for the battery.
 * Keep track of how many handlers we have so we can start and stop the native battery listener
 * appropriately (and hopefully save on battery life!).
 */
Battery.onHasSubscribersChange = function() {
  // If we just registered the first handler, make sure native listener is started.
  if (this.numHandlers === 1 && handlers() === 1) {
      exec(battery._status, battery._error, "Battery", "start", []);
  } else if (handlers() === 0) {