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infil00p committed Apr 1, 2013
0 parents commit 341aade358946284f3801a97f0f09475d2e7bf23
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cordova-plugin-battery-status
============================
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<?xml version="1.0" encoding="UTF-8"?>

<plugin xmlns="http://www.phonegap.com/ns/plugins/1.0"
xmlns:android="http://schemas.android.com/apk/res/android"
id="org.apache.cordova.core">
version="0.1.0">
<name>Battery</name>

<!-- android -->
<platform name="android">
<config-file target="res/xml/config.xml" parent="/cordova/plugins">
<plugin name="Battery" value="org.apache.cordova.core.BatteryListener"/>
</config-file>

<source-file src="BatteryListener.java" target-dir="org/apache/cordova/core" />
</platform>
</plugin>
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/*
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.
*/
package org.apache.cordova.core;

import org.apache.cordova.api.CallbackContext;
import org.apache.cordova.api.CordovaPlugin;
import org.apache.cordova.api.PluginResult;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;

import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.util.Log;

public class BatteryListener extends CordovaPlugin {

private static final String LOG_TAG = "BatteryManager";

BroadcastReceiver receiver;

private CallbackContext batteryCallbackContext = null;

/**
* Constructor.
*/
public BatteryListener() {
this.receiver = null;
}

/**
* Executes the request.
*
* @param action The action to execute.
* @param args JSONArry of arguments for the plugin.
* @param callbackContext The callback context used when calling back into JavaScript.
* @return True if the action was valid, false if not.
*/
public boolean execute(String action, JSONArray args, CallbackContext callbackContext) {
if (action.equals("start")) {
if (this.batteryCallbackContext != null) {
callbackContext.error( "Battery listener already running.");
return true;
}
this.batteryCallbackContext = callbackContext;

// We need to listen to power events to update battery status
IntentFilter intentFilter = new IntentFilter();
intentFilter.addAction(Intent.ACTION_BATTERY_CHANGED);
if (this.receiver == null) {
this.receiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
updateBatteryInfo(intent);
}
};
cordova.getActivity().registerReceiver(this.receiver, intentFilter);
}

// Don't return any result now, since status results will be sent when events come in from broadcast receiver
PluginResult pluginResult = new PluginResult(PluginResult.Status.NO_RESULT);
pluginResult.setKeepCallback(true);
callbackContext.sendPluginResult(pluginResult);
return true;
}

else if (action.equals("stop")) {
removeBatteryListener();
this.sendUpdate(new JSONObject(), false); // release status callback in JS side
this.batteryCallbackContext = null;
callbackContext.success();
return true;
}

return false;
}

/**
* Stop battery receiver.
*/
public void onDestroy() {
removeBatteryListener();
}

/**
* Stop battery receiver.
*/
public void onReset() {
removeBatteryListener();
}

/**
* Stop the battery receiver and set it to null.
*/
private void removeBatteryListener() {
if (this.receiver != null) {
try {
this.cordova.getActivity().unregisterReceiver(this.receiver);
this.receiver = null;
} catch (Exception e) {
Log.e(LOG_TAG, "Error unregistering battery receiver: " + e.getMessage(), e);
}
}
}

/**
* Creates a JSONObject with the current battery information
*
* @param batteryIntent the current battery information
* @return a JSONObject containing the battery status information
*/
private JSONObject getBatteryInfo(Intent batteryIntent) {
JSONObject obj = new JSONObject();
try {
obj.put("level", batteryIntent.getIntExtra(android.os.BatteryManager.EXTRA_LEVEL, 0));
obj.put("isPlugged", batteryIntent.getIntExtra(android.os.BatteryManager.EXTRA_PLUGGED, -1) > 0 ? true : false);
} catch (JSONException e) {
Log.e(LOG_TAG, e.getMessage(), e);
}
return obj;
}

/**
* Updates the JavaScript side whenever the battery changes
*
* @param batteryIntent the current battery information
* @return
*/
private void updateBatteryInfo(Intent batteryIntent) {
sendUpdate(this.getBatteryInfo(batteryIntent), true);
}

/**
* Create a new plugin result and send it back to JavaScript
*
* @param connection the network info to set as navigator.connection
*/
private void sendUpdate(JSONObject info, boolean keepCallback) {
if (this.batteryCallbackContext != null) {
PluginResult result = new PluginResult(PluginResult.Status.OK, info);
result.setKeepCallback(keepCallback);
this.batteryCallbackContext.sendPluginResult(result);
}
}
}

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