Android Open Source - Profiterole Search Screen

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License

The source code is released under:

Apache License

Java Source Code

package profiterole.android;
//  w w w  .  j a v  a  2s .  c  o  m
import java.io.File;

import profiterole.api.MapReduce;
import profiterole.api.OnUpdateStatusCallback;
import profiterole.api.Waffle;
import profiterole.mapreduce.Splitter;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.os.Environment;
import android.os.Handler;
import android.os.Message;
import android.text.method.ScrollingMovementMethod;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.TextView;

import com.profiterole.android.R;

public class SearchScreen extends Activity {

  ProgressThread progThread;
  Button applyButton;
  Button dictionaryButton;
  TextView resultText;
  Waffle<?> mapReduceDB = null;

  public static final String WORDS_TO_OCCURENCES_MAP = "WORDS_TO_OCCURENCES_MAP";
  public static final String STATUS_TEXT = "STATUS_TEXT";
  public static final String NO_FILE_ERROR = "NO_FILE_ERROR";
  public static final String SHELL_TEXT = "SHELL_TEXT";
  
  public boolean flagProtectButtonClick = true;

  // Handler on the main (UI) thread that will receive messages from the
  // second thread and update the progress.
  final Handler handler = new Handler() {

    public void handleMessage(Message msg) {

      String text = msg.getData().getString(SHELL_TEXT);

      if (text != null) {
        resultText.setText(text);
      }
      String status = msg.getData().getString(STATUS_TEXT);

      if (status != null) {
        resultText.setText(status);
      }
      
      String error = msg.getData().getString(NO_FILE_ERROR);
      
      if (error != null) {
        resultText.setText(error);
      }
    }
  };

  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.search_screen);

    resultText = (TextView) findViewById(R.id.resultTextView);
    resultText.setMovementMethod(new ScrollingMovementMethod());

    applyButton = (Button) findViewById(R.id.applyButton);
    applyButton.setOnClickListener(new OnClickListener() {

      @Override
      public void onClick(View v) {

        // check if map reduce was run and take text from inputs
        // TODO don't do null comparison check for isEmpty
        if(flagProtectButtonClick && mapReduceDB == null) {  
          progThread = new ProgressThread(handler);
          progThread.start();
          resultText.setText("");      
        }
        // TODO here add search word from edit text
        resultText.setText("Here add on for word count");
      }
    });

    dictionaryButton = (Button) findViewById(R.id.showResultButton);
    dictionaryButton.setOnClickListener(new OnClickListener() {

      @Override
      public void onClick(View v) {
        Intent i = new Intent(SearchScreen.this, DictionaryScreen.class);
        Bundle b = new Bundle();

        // TODO null comparison
        if(mapReduceDB != null)
          b.putString(WORDS_TO_OCCURENCES_MAP, mapReduceDB.getSortedUnModifiableList().toString());
        else
          b.putString(WORDS_TO_OCCURENCES_MAP, "Processing");
        i.putExtras(b); //Put your id to your next Intent
        startActivity(i);
      }
    });
  }

  // Also provide a setState(state) method to stop the thread gracefully.
  private class ProgressThread extends Thread {

    Handler mHandler;

    ProgressThread(Handler h) {
      mHandler = h;
    }

    @Override
    public void run() {

      // splits the file
      File folder = new File(Environment.getExternalStorageDirectory()
          + "/Profiterole" + "/pg1661.txt");
      
      if(!folder.exists()) {
        Message msg = mHandler.obtainMessage();
        Bundle b = new Bundle();
        b.putString(NO_FILE_ERROR, "The folder doesn't exist");
        msg.setData(b);
        mHandler.sendMessage(msg);
        return;
      }

      // block button
      flagProtectButtonClick = false;
      File destFolder = new File(
          Environment.getExternalStorageDirectory() + "/Profiterole"
              + "/MapJobs/");
      destFolder.mkdir();
      Splitter.splitFile(folder, destFolder, 10000);

      OnUpdateStatusCallback listener = new OnUpdateStatusCallback() {

        @Override
        public void onMediumTwo(String info) {
          sendMessage(info);
        }

        @Override
        public void onMediumOne(String info) {
          sendMessage(info);  
        }

        @Override
        public void onInit(String info) {          
          sendMessage(info);
        }

        @Override
        public void onFinish(String info) {
          sendMessage(info);
          applyButton.setClickable(true);
        }

        private void sendMessage(String s) {
          Message msg = mHandler.obtainMessage();
          Bundle b = new Bundle();
          b.putString(STATUS_TEXT, s);
          msg.setData(b);
          mHandler.sendMessage(msg);
        }
      };
      
      mapReduceDB = MapReduce.perform(destFolder,listener, null);
      
      flagProtectButtonClick = true;
      
      Message msg = mHandler.obtainMessage();
      Bundle b = new Bundle();
      b.putString(SHELL_TEXT, "Result dictionary " + mapReduceDB.getSortedUnModifiableList().size()
          + " entries");
      msg.setData(b);
      mHandler.sendMessage(msg);

    }
  }
}

Java Source Code List

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