keymapper.java

The Funambol J2ME Mail Client aims to be a light, easy to use, free email client for J2ME devices.

/*
 * Copyright (C) 2006-2007 Funambol
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 *
 */

package com.funambol.mailclient.ui.view;

import com.funambol.mailclient.ui.controller.UIController;
import com.funambol.util.Log;
import java.util.Enumeration;
import java.util.Vector;
import javax.microedition.lcdui.Canvas;



/**
 * Helper class for t9-like support.
 *
 */
public class KeyMapper {
    
    /**
     * here we keep the possible strings
     */
    private StringBuffer strings[];
    
    public KeyMapper() {
        strings = new StringBuffer[0];
        
               
        
      
        
    }
    
    /**
     * add the given keycode to the vector of keycodes
     */
    public  void addKey(int keyCode) {
        
        String[] toAppend = getStringsFromKeyCode(keyCode);
        
        if (strings.length == 0 ) {
            strings = new StringBuffer[toAppend.length];
            for (int i = 0; i < toAppend.length;  i++) {
                strings[i] = new StringBuffer(toAppend[i]);
            }
        } else {
            if (toAppend.length >0) {
                //creating new stringbuffer
                StringBuffer[] newStringVector = new StringBuffer[strings.length*toAppend.length];
                
                for (int i = 0; i < toAppend.length; i++) {
                    //copy the strings element to the new array
                   for (int k = 0; k< strings.length; k++) {
                        newStringVector[strings.length*i +k] = new StringBuffer(strings[k].toString()).append(toAppend[i]);
                        
                    }
                }
                /*
                for (int i = 0; i < newStringVector.length ; i++) {
                        newStringVector[i].append(toAppend[i%toAppend.length]);
                }*/
                strings = newStringVector;
            }
        }
    }
    
    
    public String[] getStrings() {
        String[] ret = new String[strings.length];
        for (int i = 0; i< strings.length; i++) {
           ret[i] = strings[i].toString();
      //      Log.debug(ret[i]);
        }
        
        
        return ret;
        
        
    }
    
    /**
     * returns the array of strings corresponding to the given keycode,
     * e.g. on most phones the number 2 corresponds to a,b,c
     */
    private  String[] getStringsFromKeyCode(int keyCode){
        
        if ((char)keyCode == '2') {
            return new String[] {"a", "b", "c"};
        } else if ((char)keyCode == '3') {
            return new String[] {"d", "e", "f"};
        } else if ((char)keyCode == '4') {
            return new String[] {"g", "h", "i"};
        } else if ((char)keyCode == '5') {
            return new String[] {"j", "k", "l"};
        } else if ((char)keyCode == '6') {
            return new String[] {"m", "n", "o"};
        } else if ((char)keyCode == '7') {
            return new String[] {"p", "q", "r", "s"};
        } else if ((char)keyCode == '8') {
            return new String[] {"t", "u", "v"};
        } else if ((char)keyCode == '9') {
            return new String[] {"w", "x", "y","z"};
        } else if (keyCode>0) {
            String [] s = new String[1];
           s[0] = "" + (char)keyCode;
          return s;
        }
        // if nothing works, we return nothing!
        return new String[0];
    }
}