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Java Mouse Adapter - event handling -

Posted on 2009-03-29
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1,468 Views
Last Modified: 2013-11-23
Hi i have a JPane containing 100 JButtons.  The initial rollover icon for each button is a right arrow.  I need to change the rollover icon to a down arrow if the user clicks the right-mouse button, back to right arrow if clicked again and so on.

I created an inner class "MouseHandler".  However it does not do anything when I click the right mouse button.  Can you guys let me know what I'm doing wrong?

Thanks.


MouseHandler class starts at line 101
 
import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import java.awt.event.InputEvent;

import java.awt.event.MouseAdapter;

import java.awt.event.MouseEvent;

 

import javax.swing.ImageIcon;

 

public class HomeOcean extends Ocean implements ActionListener {

 

	private static final long serialVersionUID = 1L;

	final boolean home = true;

	boolean horizontal;

	Coordinate coordinate;

	Ship carrier, battleship, submarine, destroyer, patrolBoat;

	final ImageIcon arrowDown = new ImageIcon("images/arrow_down.png");

	final ImageIcon arrowRight = new ImageIcon("images/arrow_right.png");

	

	public HomeOcean() {

		super();

		horizontal = true;

		for(int x=1; x<=10; x++){

			for(int y=1; y<=10; y++){

				super.grid[x][y].setRollover(home);

			}

		}

		super.grid[0][0].setOceanIcon(home);

		carrier = new AircraftCarrier();

		battleship = new Battleship();

		submarine = new Submarine();

		destroyer = new Destroyer();

		patrolBoat = new PatrolBoat();

		addMouseListener(new MouseHandler());

	}

	

	private void repaintCursor(boolean horizontal){

			if(horizontal){

				for(int x=1; x<=10; x++){

				for(int y=1; y<=10; y++){

					grid[x][y].setRolloverIcon(arrowRight);

					//grid[x][y].setRolloverIcon(grid[x][y].arrowRight);

				}

			}

	}

			else{

				for(int x=1; x<=10; x++){

					for(int y=1; y<=10; y++){

						//grid[x][y].setRolloverIcon(grid[x][y].arrowDown);

						grid[x][y].setRolloverIcon(arrowDown);

					}

				}

			}

	}

	

	public void setCoordinate(Coordinate coord){

		this.coordinate = coord;

	}

	

	public void placeShip(Ship ship){

		ship.placeShip(coordinate, horizontal, this.validPosition(coordinate, ship.size, horizontal));

	}

	

	

	public boolean validPosition(Coordinate coordinate, int size, boolean isHorizontal){

		int x = coordinate.getX();

		int y = coordinate.getY();

		if(isHorizontal){

			if(x+size>10){

				return false;

			}

			boolean valid = true;

			int position = x;

			while(valid && position <= x+size){

				if(super.grid[position][y].isFree())

					position++;

				else

					valid = false;

			}

			return valid;

		}

		else{

			if(y+size>10){

				return false;

			}

			boolean valid = true;

			int position = y;

			while(valid && position <= y+size){

				if(super.grid[x][position].isFree())

					position++;

				else

					valid = false;

			}

			return valid;

		}

	}

	

 

	public void actionPerformed(ActionEvent e) {

	}

	

	private class MouseHandler extends MouseAdapter{

		public void mousePressed(MouseEvent e){

			if(e.getModifiers() == InputEvent.BUTTON3_MASK){

				horizontal = !horizontal;

				repaintCursor(horizontal);

				repaint();

				

			}

		}

	}

 

	}

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Question by:ubuntuguy
2 Comments
 
LVL 92

Expert Comment

by:objects
ID: 24015357
i the mousePressed() method getting called?

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LVL 1

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by:
ubuntuguy earned 0 total points
ID: 24015610
I fixed... the mouse handler needed to be added to the buttons not the jpanel.
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