Android Open Source - DotDotDash Main Service

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Back to project page DotDotDash.

License

The source code is released under:

MIT License

Java Source Code

package com.habosa.dotdotdash;
//from  w  w w .j a  va 2 s  .co  m
import java.util.Date;
import java.util.HashMap;
import java.util.Map;
import java.util.Timer;
import java.util.TimerTask;

import android.inputmethodservice.InputMethodService;
import android.inputmethodservice.KeyboardView.OnKeyboardActionListener;
import android.view.View;
import android.view.inputmethod.InputConnection;
import android.view.inputmethod.InputMethodManager;

public class MainService extends InputMethodService
implements OnKeyboardActionListener {

    public static int KEY_CODE_MAIN = 1;
    public static long LONG_PRESS_TIME = 250L;
    public static int CONVERT_DELAY_MILLIS = 700;

    private InputMethodManager mInputMethodManager;

    private MorseKeyboardView mInputView;
    private MorseKeyboard mMorseKeyboard;

    private Date mPressStarted;
    private StringBuilder mComposing = new StringBuilder();

    public static Map<String, String> decoder = new HashMap<String, String>();
    private static Timer sTimer = new Timer();

    @Override
    public void onCreate() {
        super.onCreate();
        mInputMethodManager = (InputMethodManager) getSystemService(INPUT_METHOD_SERVICE);
        initDecoder();
    }

    public void initDecoder() {
        decoder.put(".-", "A");
        decoder.put("-...", "B");
        decoder.put("-.-.", "C");
        decoder.put("-..", "D");
        decoder.put(".", "E");
        decoder.put("..-.", "F");
        decoder.put("--.", "G");
        decoder.put("....", "H");
        decoder.put("..", "I");
        decoder.put(".---", "J");
        decoder.put("-.-", "K");
        decoder.put(".-..", "L");
        decoder.put("--", "M");
        decoder.put("-.", "N");
        decoder.put("---", "O");
        decoder.put(".--.", "P");
        decoder.put("--.-", "Q");
        decoder.put(".-.", "R");
        decoder.put("...", "S");
        decoder.put("-", "T");
        decoder.put("..-", "U");
        decoder.put("...-", "V");
        decoder.put(".--", "W");
        decoder.put("-..-", "X");
        decoder.put("-.--", "Y");
        decoder.put("--..", "Z");
        decoder.put("-----", "0");
        decoder.put(".----", "1");
        decoder.put("..---", "2");
        decoder.put("...--", "3");
        decoder.put("....-", "4");
        decoder.put(".....", "5");
        decoder.put("-....", "6");
        decoder.put("--...", "7");
        decoder.put("---..", "8");
        decoder.put("----.", "9");
    }

    @Override
    public void onInitializeInterface() {
        mMorseKeyboard = new MorseKeyboard(this, R.xml.morse);
    }

    @Override
    public View onCreateInputView() {
        mInputView = (MorseKeyboardView) getLayoutInflater().inflate(R.layout.morse_keyboard, null);
        mInputView.setOnKeyboardActionListener(this);
        mInputView.setKeyboard(mMorseKeyboard);
        return mInputView;
    }

    @Override
    public void onKey(int primaryCode, int[] keyCodes) {
        // TODO(samstern): Do something here
    }

    @Override
    public void onPress(int primaryCode) {
        // Mark time
        mPressStarted = new Date();
        // Cancel scheduled tasks
        sTimer.cancel();
    }

    @Override
    public void onRelease(int primaryCode) {
        if (primaryCode == 1) {
            Date pressEnded = new Date();
            long diff = pressEnded.getTime() - mPressStarted.getTime();
            if (diff >= LONG_PRESS_TIME) {
                // Long press
                mComposing.append('-');
                sendText("-");
            } else {
                // Short press
                mComposing.append('.');
                sendText(".");
            }

            // Convert after a small delay
            sTimer = new Timer();
            sTimer.schedule(new TimerTask() {
                @Override
                public void run() {
                    convertLastChar();
                }      
            }, CONVERT_DELAY_MILLIS);
        } else if (primaryCode == 2) {
            sendText(" ");
            mComposing.setLength(0);
        }
    }

    /**
     * Take the morse chars, make a letter.
     */
    public void convertLastChar() {
        String entered = mComposing.toString();
        String letter = decoder.get(entered);
        if (letter != null) {
            // Delete the dots and dashes
            deleteText(mComposing.length());
            // Send a letter
            sendText(letter);
            mComposing.setLength(0);
        } else {
            sendText("?");
            mComposing.setLength(0);
        }
    }

    /**
     * Send the text to the view.
     */
    public void sendText(String toSend) {
        InputConnection inputConnection = getCurrentInputConnection();
        inputConnection.commitText(toSend, 1);
    }

    /**
     * Delete the last 'num' characters
     * @param num
     */
    public void deleteText(int num) {
        InputConnection inputConnection = getCurrentInputConnection();
        inputConnection.deleteSurroundingText(num, 0);
    }

    @Override
    public void onText(CharSequence text) {
        // TODO Auto-generated method stub     
    }

    @Override
    public void swipeDown() { 
        // TODO(samstern): Hide the noob buttons
    }

    @Override
    public void swipeUp() {
        // TODO(samstern): Show the noob buttons
    }

    @Override
    public void swipeLeft() { }

    @Override
    public void swipeRight() { }

}

Java Source Code List

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