Custom EditFiled in blackberry

Every java blackberry application developer require EditField in blackberry. Here as following code is use full how to create custom EditField component in blackberry.

import net.rim.device.api.ui.Color;
import net.rim.device.api.ui.Manager;
import net.rim.device.api.ui.Field;
import net.rim.device.api.ui.component.EditField;
import net.rim.device.api.system.Display;
import net.rim.device.api.system.Characters;
import net.rim.device.api.ui.Graphics;
import net.rim.device.api.ui.Font;

public class CustomTextBox extends Manager
{
   
    private final static int DEFAULT_LEFT_MARGIN = 120;
    private final static int DEFAULT_RIGHT_MARGIN = 25;
    private final static int DEFAULT_TOP_MARGIN = 5;
    private final static int DEFAULT_BOTTOM_MARGIN = 5;
    
    private final static int DEFAULT_LEFT_PADDING = 10;
    private final static int DEFAULT_RIGHT_PADDING = 10;
    private final static int DEFAULT_TOP_PADDING = 5;
    private final static int DEFAULT_BOTTOM_PADDING = 5;
    
    private int topMargin = DEFAULT_TOP_MARGIN;
    private int bottomMargin = DEFAULT_BOTTOM_MARGIN;
    private int leftMargin = DEFAULT_LEFT_MARGIN;
    private int rightMargin = DEFAULT_RIGHT_MARGIN;
    
    private int topPadding = DEFAULT_TOP_PADDING;
    private int bottomPadding = DEFAULT_BOTTOM_PADDING;
    private int leftPadding = DEFAULT_LEFT_PADDING;
    private int rightPadding = DEFAULT_RIGHT_PADDING;
    
    private int totalHorizontalEmptySpace = leftMargin + leftPadding + rightPadding + rightMargin;
    private int totalVerticalEmptySpace = topMargin + topPadding + bottomPadding + bottomMargin;
    
    private int minHeight = getFont().getHeight() + totalVerticalEmptySpace;
    private int width = Display.getWidth();
    private int height = minHeight;
 private int button_colour = 0xF9F9F9;
 private int text_colour = 0x666666;
 private int border_color = 0xCCCCCC;
    private String heading ="";
    private EditField editField;
    private Font headingFont;
    public CustomTextBox(String heading)
    {
        super(0);
        this.heading = heading;
        this.width = Display.getWidth()-15;
        editField = new EditField();
        add(editField);
    } 
    public CustomTextBox(String heading, Font headingFont)
    {
        super(0);
        this.heading = heading;
        this.width = Display.getWidth()-15;
        editField = new EditField();
        this.headingFont = headingFont;
        add(editField);
    }   
    public CustomTextBox(String heading, Font headingFont, long style)
    {
        super(0);
        this.heading = heading;
        this.width = Display.getWidth()-15;
        editField = new EditField(style);
        this.headingFont = headingFont;
        add(editField);
    }   
    public CustomTextBox(String heading,  long style)
    {
        super(0);
        this.heading = heading;
        this.width = Display.getWidth()-15;
        editField = new EditField(style);
        add(editField);
    }   
    
    protected void sublayout(int width, int height)
    {
        Field field = getField(0);
        layoutChild(field, this.width - totalHorizontalEmptySpace , this.height - totalVerticalEmptySpace);
        setPositionChild(field, leftMargin+leftPadding, topMargin+topPadding);
        setExtent(this.width, this.height);
    }
    
    public void setTopMargin(int topMargin)
    {
        this.topMargin = topMargin;
    }
    
    public void setBottomMargin(int bottomMargin)
    {
        this.bottomMargin = bottomMargin;
    }
    
    
    protected void paint(Graphics graphics)
    {
     
     graphics.setColor(border_color);
        graphics.drawRoundRect(leftMargin, topMargin, width - (leftMargin+rightMargin), height - (topMargin+bottomMargin), 7, 7);
        graphics.setColor(15333367);
        graphics.fillRect(leftMargin+3, topMargin+3, (width - (leftMargin+rightMargin))-5,(height- (topMargin+bottomMargin))-5);
       
        graphics.setColor(Color.BLACK);
        if(headingFont!=null){
         setFont(headingFont);
         graphics.drawText(heading, 2, 10);
        }else{
         graphics.drawText(heading, 2, 7);
        }
        
        graphics.setColor(text_colour);
        EditField ef = (EditField)getField(0);
        String entireText = ef.getText();
        
        String textToDraw = "";
        Font font = getFont();
        int availableWidth = width - totalHorizontalEmptySpace;
        if (font.getAdvance(entireText) <= availableWidth)
        {
            textToDraw = entireText;
        }
        else
        {
            int endIndex = entireText.length();
            for (int beginIndex = 1; beginIndex < endIndex; beginIndex++)
            {
                textToDraw = entireText.substring(beginIndex);
                if (font.getAdvance(textToDraw) <= availableWidth)
                {
                    break;
                }
            }
        }   
        graphics.setColor(text_colour);
        ef.setText(textToDraw);
        
        super.paint(graphics);        
        
    }
    
    public int getPreferredWidth()
    {
        return width;
    }
    
    public int getPreferredHeight()
    {
        return height;
    }
    
    protected boolean keyChar(char ch, int status, int time)
    {
        if (ch == Characters.ENTER)
        {
            return true;
        }
        else
        {
            return super.keyChar(ch, status, time);
        }
    }
    
    public String getText()
    {
        return ((EditField)getField(0)).getText();
    }
    
    public void setText(final String text)
    {
        ((EditField)getField(0)).setText(text);
    }   
 
 protected void onUnfocus() {
  super.onUnfocus();
 }
 
 protected void onFocus(int direction) {
  // TODO Auto-generated method stub
  super.onFocus(direction);
 }

 protected void drawFocus(Graphics graphics, boolean on) {
  
    super.drawFocus(graphics, on);
 }
 public void setEnabled(boolean enabled) {
  // TODO Auto-generated method stub
  this.editField.setEnabled(enabled);
  super.setEnabled(enabled);
 }
 
}

Now add CustomTextBox on MainScreen

CustomTextBox editEmail = new CustomTextBox("Email: ");
 add(editEmail);

Output Like this.

We can also create same CustomPassword filed please change EditField to PasswordEditField.
Thank you.