Android Open Source - kirin-for-android Kirin X H R Extension Impl

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License

The source code is released under:
Apache License
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Java Source Code

package com.futureplatforms.kirin.extensions.networking;
//from w w  w.  ja  v  a 2  s .  c  o  m
import java.io.BufferedInputStream;
import java.io.IOException;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLConnection;
import java.util.Iterator;
import java.util.List;
import java.util.Map;

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

import android.content.Context;
import android.util.Log;

import com.futureplatforms.kirin.C;
import com.futureplatforms.kirin.extensions.KirinExtensionAdapter;
import com.futureplatforms.kirin.generated.xhr.KirinXHRExtension;
import com.futureplatforms.kirin.generated.xhr.KirinXHRProgressEvent;
import com.futureplatforms.kirin.generated.xhr.KirinXHRResponse;
import com.futureplatforms.kirin.generated.xhr.KirinXHRequest;

public class KirinXHRExtensionImpl extends KirinExtensionAdapter implements
    KirinXHRExtension {

  public KirinXHRExtensionImpl(Context context) {
    super(context, "KirinXMLHTTPRequest");
  }

  @Override
  public void open(KirinXHRequest xhrObject, Object data) {
    String urlString = xhrObject.getUrl();

    URL url;
    URLConnection connection = null;
    try {
      url = new URL(urlString);
      connection = url.openConnection();
    } catch (MalformedURLException e) {
      Log.e(C.TAG, "Error constructing url to " + urlString, e);
      xhrObject._doOnInitialisationError(e.getLocalizedMessage());
    } catch (IOException e) {
      Log.e(C.TAG, "Error connecting to " + urlString, e);
      xhrObject._doOnInitialisationError(e.getLocalizedMessage());
    }
    if (connection == null) {
      return;
    }
    
    
    
    JSONObject headers = xhrObject.getRequestHeaders();
    for (@SuppressWarnings("unchecked")
    Iterator<String> iterator = headers.keys(); iterator.hasNext();) {
      String header = iterator.next();
      String value = headers.optString(header);
      connection.addRequestProperty(header, value);
    }
    
    connection.setReadTimeout((int) xhrObject.getTimeout());
    
    if (xhrObject.getResponseType() != null) {
      // TODO implement getResponseType() - not sure how to deal with this.
      // we can be "text", "json", "document", "arraybuffer", "blob"
    }
    
    try {
      connection.connect();
      if (data != null) {
        // TODO send the data.
        // this may include file upload data.
      }
      
      JSONObject responseHeadersJson = new JSONObject();
      if (connection instanceof HttpURLConnection) {
        HttpURLConnection httpConnection = (HttpURLConnection) connection;
        
        
        Map<String, List<String>> responseHeaders = httpConnection.getHeaderFields();
        
        for (Map.Entry<String, List<String>> entry : responseHeaders.entrySet()) {
          try {
            responseHeadersJson.putOpt(entry.getKey(), new JSONArray(entry.getValue()));
          } catch (JSONException e) {
            Log.e(C.TAG, "Problem with response header " + entry.getKey(), e);
          }
        }
      }

      xhrObject._doOnConnect(responseHeadersJson, newProgressEvent(0, 0));
      
      
      // Now we should download whatever we're given.
      
      // TODO download all the stuffs from that we need.
      
      BufferedInputStream in = new BufferedInputStream(connection.getInputStream());
      
      
      
      
      Object downloaded = connection.getContent();

      if (downloaded != null) {
        downloaded = downloaded.toString();
      } else {
        downloaded = "";
      }
      
      // Now we've downloaded, we should finish up.
      KirinXHRResponse response = newResponse();
    
      if (connection instanceof HttpURLConnection) {
        HttpURLConnection httpConnection = (HttpURLConnection) connection;
        response.setStatus(httpConnection.getResponseCode());
        response.setStatusText(httpConnection.getResponseMessage());
      } else {
        response.setStatus(HttpURLConnection.HTTP_OK);
        response.setStatusText("OK");
      }
      
      
      xhrObject._doOnRequestComplete(response.getStatus(), response, newProgressEvent(0, 0));
      
    } catch (IOException e) {
      // was this a timeout
      
      // was this a connectivity problem?
    }    
  }

  private KirinXHRResponse newResponse() {
    return this.mKirinHelper.javascriptProxyForValueObject(new JSONObject(), KirinXHRResponse.class);
  }
  
  private KirinXHRProgressEvent newProgressEvent(int loaded, int total) {
    KirinXHRProgressEvent event = this.mKirinHelper.javascriptProxyForValueObject(new JSONObject(), KirinXHRProgressEvent.class);
    event.setLoaded(loaded);
    event.setTotal(total);
    return event;
  }

  @Override
  public void abort(String xhrId) {
    
  }

}
Java Source Code List
