CODEWITHSUNDEEP
javaeventsmethods
Moohebat
Moohebat

Reputation: 465

Call an event method inside another event method

In many cases it happened to me that I have written an event and later I discovered that in another event I am repeating same code again and again. For example I have this code in mouuseclick:

Text_1.addMouseListener(new org.eclipse.swt.events.MouseListener() {
        public void mouseDown(MouseEvent e) {
            if(Highlighted)
                //UnHighlightWords();
            SetActualWord();
            selectedWord=ActualWord;
            fetchWord(ActualWord);

            DisplayData.label_translation.setText(String.valueOf(ActualWord.getSurahNumber()));

            ShowWord(ActualWord);

        }

and again I will have keypress event like this:

Text_1.addKeyListener(new org.eclipse.swt.events.KeyListener(){

        public void keyPressed(KeyEvent e) {
                             // ******recall Mousedown event*******
            }
        }

Is it possible to recall Mousedown method inside Keypressed to do not repeat same code again here or not? If yes how?

Upvotes: 0

Views: 7174

Answers (3)

Caffe Latte
Caffe Latte

Reputation: 1743

You can't call a KeyListener's method inside a MouseListener's method, as they are different events and used for different purposes, so you can't cast KeyListener event to MouseListener, and vice versa.

But you can call call keyPressed() inside keyReleased() for example, as they are the same event.

UPDATE

import java.awt.*;
import javax.swing.*;
import java.awt.event.*;

public class EventDemo extends JFrame implements ActionListener,KeyListener{

 private JTextField text;
 private JButton saveButton,cancelButton;
 public EventDemo(){
  JPanel p = new JPanel();
  text = new JTextField("Event Demonstration");
  saveButton = new JButton("SAVE");
  cancelButton = new JButton("CANCEL");
  saveButton.addActionListener(this);
  cancelButton.addActionListener(this);

  text.addKeyListener(this);
  p.add(saveButton);
  p.add(cancelButton);
  p.add(text);
  setDefaultCloseOperation(3);
  getContentPane().add(p,BorderLayout.CENTER);
  setLocationRelativeTo(null);
  setVisible(true);

  pack();
 }


 public void actionPerformed(ActionEvent ev){
  Object source = ev.getSource();
  if(source== saveButton){
    System.out.println("Save button action");
}
  else if(source == cancelButton){
    //do something
    System.out.println("cancel button action");
}
 }

 public void keyPressed(KeyEvent e){
     //see here we called keyEvent method
     keyEvents(e);
    }
    public void keyReleased(KeyEvent e){

   }
   public void keyTyped(KeyEvent e){

   }

 /*
 this method created for key events
 */
 public void keyEvents(KeyEvent e){
  System.out.println(e.getKeyChar());
 }

 public static void main(String...args){
     new EventDemo();
 }
}

Upvotes: 1

Hanan Awwad
Hanan Awwad

Reputation: 63

Simply put all this code (which you already call it in mouse event) in a separate method and call the method whenever you need 

        if(Highlighted)
            //UnHighlightWords();
        SetActualWord();
        selectedWord=ActualWord;
        fetchWord(ActualWord);


        DisplayData.label_translation.setText(String.valueOf(ActualWord.getSurahNumber()));

        ShowWord(ActualWord);

Upvotes: 3

nanofarad
nanofarad

Reputation: 41281

Simple. First get a reference to the object(which is an instance of an anonymous class by:

//I'll import the class for readability
import org.eclipse.swt.events.KeyListener;
//snip

//Do this line ***OUTSIDE*** the method, and in the class body!
MouseListener ml=new MouseListener(){
    void mouseClicked(MouseEvent e){
        //Do something
    }
    //All the other methods as well
}
KeyListener kl=new KeyListener(){

    public void keyPressed(KeyEvent e) {
            ml.mouseClicked(new MouseEvent(Component source, ...)); //edit this part as needed
        }
}
Text_1.addKeyListener(kl);

You can now repeat the use of kl as needed. You can also manually invoke said listener by doing kl.keyPressed(KeyEvent e);

Upvotes: 1

Related Questions