com.phonegap.TempListener.java Source code

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Here is the source code for com.phonegap.TempListener.java

Source

/*
 * PhoneGap is available under *either* the terms of the modified BSD license *or* the
 * MIT License (2008). See http://opensource.org/licenses/alphabetical for full text.
 * 
 * Copyright (c) 2005-2010, Nitobi Software Inc.
 * Copyright (c) 2010, IBM Corporation
 */
package com.phonegap;

import java.util.List;

import org.json.JSONArray;

import com.phonegap.api.PhonegapActivity;
import com.phonegap.api.Plugin;
import com.phonegap.api.PluginResult;

import android.hardware.Sensor;
import android.hardware.SensorEvent;
import android.hardware.SensorEventListener;
import android.hardware.SensorManager;
import android.content.Context;

public class TempListener extends Plugin implements SensorEventListener {

    Sensor mSensor;
    private SensorManager sensorManager;

    /**
     * Constructor.
     */
    public TempListener() {
    }

    /**
     * Sets the context of the Command. This can then be used to do things like
     * get file paths associated with the Activity.
     * 
     * @param ctx The context of the main Activity.
     */
    public void setContext(PhonegapActivity ctx) {
        super.setContext(ctx);
        this.sensorManager = (SensorManager) ctx.getSystemService(Context.SENSOR_SERVICE);
    }

    /**
     * Executes the request and returns PluginResult.
     * 
     * @param action       The action to execute.
     * @param args          JSONArry of arguments for the plugin.
     * @param callbackId   The callback id used when calling back into JavaScript.
     * @return             A PluginResult object with a status and message.
     */
    public PluginResult execute(String action, JSONArray args, String callbackId) {
        PluginResult.Status status = PluginResult.Status.OK;
        String result = "";

        if (action.equals("start")) {
            this.start();
        } else if (action.equals("stop")) {
            this.stop();
        }
        return new PluginResult(status, result);
    }

    /**
     * Called by AccelBroker when listener is to be shut down.
     * Stop listener.
     */
    public void onDestroy() {
        this.stop();
    }

    //--------------------------------------------------------------------------
    // LOCAL METHODS
    //--------------------------------------------------------------------------

    public void start() {
        List<Sensor> list = this.sensorManager.getSensorList(Sensor.TYPE_TEMPERATURE);
        if (list.size() > 0) {
            this.mSensor = list.get(0);
            this.sensorManager.registerListener(this, this.mSensor, SensorManager.SENSOR_DELAY_NORMAL);
        }
    }

    public void stop() {
        this.sensorManager.unregisterListener(this);
    }

    public void onAccuracyChanged(Sensor sensor, int accuracy) {
        // TODO Auto-generated method stub
    }

    public void onSensorChanged(SensorEvent event) {
        // We want to know what temp this is.
        float temp = event.values[0];
        this.sendJavascript("gotTemp(" + temp + ");");
    }

}