com.strumsoft.websocket.phonegap.WebSocketFactory.java Source code

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Here is the source code for com.strumsoft.websocket.phonegap.WebSocketFactory.java

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/*
 * Copyright (c) 2010 Animesh Kumar  (https://github.com/anismiles)
 * Copyright (c) 2010 Strumsoft  (https://strumsoft.com)
 * 
 * Permission is hereby granted, free of charge, to any person
 * obtaining a copy of this software and associated documentation
 * files (the "Software"), to deal in the Software without
 * restriction, including without limitation the rights to use,
 * copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following
 * conditions:
 *  
 * The above copyright notice and this permission notice shall be
 * included in all copies or substantial portions of the Software.
 *  
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
 * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
 * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 * OTHER DEALINGS IN THE SOFTWARE.
 *  
 */
package com.strumsoft.websocket.phonegap;

import java.net.URI;
import java.util.ArrayList;
import java.util.List;
import java.util.Random;
import java.util.UUID;

import android.content.Context;
import android.util.Log;
import android.webkit.JavascriptInterface;
import android.webkit.WebView;
import android.widget.Toast;

import com.thinksouce.vw_websocket.HazardSignal;

import org.json.JSONException;
import org.json.JSONObject;

/**
 * The <tt>WebSocketFactory</tt> is like a helper class to instantiate new
 * WebSocket instaces especially from Javascript side. It expects a valid
 * "ws://" URI.
 *
 * @author Animesh Kumar
 */
public class WebSocketFactory {

    /** The app view. */
    WebView appView;
    Context mContext;
    boolean first = true;
    private String toast;

    public List<HazardSignal> hazardSignalList = new ArrayList<HazardSignal>();

    /**
     * Instantiates a new web socket factory.
     *
     * @param appView
     *            the app view
     */
    public WebSocketFactory(WebView appView, Context c) {
        this.appView = appView;
        mContext = c;
    }

    public WebSocket getInstance(String url) {
        // use Draft75 by default
        return getInstance(url, WebSocket.Draft.DRAFT75);
    }

    public WebSocket getInstance(String url, WebSocket.Draft draft) {
        WebSocket socket = null;
        Thread th = null;
        try {
            socket = new WebSocket(appView, new URI(url), draft, getRandonUniqueId());
            th = socket.connect();
            return socket;
        } catch (Exception e) {
            //Log.v("websocket", e.toString());
            if (th != null) {
                th.interrupt();
            }
        }
        return null;
    }

    /**
     * Generates random unique ids for WebSocket instances
     *
     * @return String
     */
    private String getRandonUniqueId() {
        return "WEBSOCKET." + new Random().nextInt(100);
    }

    public void addToHazardSignalList(String hazardSignalJSON) throws JSONException {
        try {
            JSONObject jsonObject = new JSONObject(hazardSignalJSON);
            HazardSignal hazardSignal = new HazardSignal(jsonObject);
            HazardSignal oldHazardSignal = selectHazardSignalByDeviceID(hazardSignal.deviceID);
            if (oldHazardSignal == null) {
                hazardSignalList.add(hazardSignal);
            } else {
                hazardSignalList.remove(oldHazardSignal);
                hazardSignalList.add(hazardSignal);
            }
            Log.d("HazardList", "Hazard List Size: " + hazardSignalList.size());
        } catch (Exception exception) {
            //don't crash
            Log.d("HazardList", exception.getMessage());
        }
    }

    public HazardSignal selectHazardSignalByDeviceID(UUID deviceID) {
        for (int i = 0; i < hazardSignalList.size(); i++) {
            if (hazardSignalList.get(i).deviceID.toString().equalsIgnoreCase(deviceID.toString())) {
                return hazardSignalList.get(i);
            }
        }
        return null;
    }

    public List<HazardSignal> getHazardSignals() {
        for (int i = 0; i < hazardSignalList.size(); i++) {
            if (System.currentTimeMillis() - hazardSignalList.get(i).dateTime > 90000) {
                hazardSignalList.remove(i);
            }
        }
        return hazardSignalList;
    }

    /** Show a toast from the web page */
    @JavascriptInterface //You have to have this for the javascript to be able to call the method
    public void showToast(String toast) {
        this.toast = toast;
        Toast.makeText(mContext, toast, Toast.LENGTH_SHORT).show();
    }

}