[Last Call] Learn about multicloud storage options and how to improve your company's cloud strategy. Register Now

x
?
Solved

Java Mouse Adapter - event handling -

Posted on 2009-03-29
2
Medium Priority
?
1,542 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();
				
			}
		}
	}
 
	}

Open in new window

0
Comment
Question by:ubuntuguy
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
2 Comments
 
LVL 92

Expert Comment

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

0
 
LVL 1

Accepted Solution

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

Featured Post

Free Tool: Site Down Detector

Helpful to verify reports of your own downtime, or to double check a downed website you are trying to access.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Introduction This article is the last of three articles that explain why and how the Experts Exchange QA Team does test automation for our web site. This article covers our test design approach and then goes through a simple test case example, how …
In this post we will learn how to make Android Gesture Tutorial and give different functionality whenever a user Touch or Scroll android screen.
Viewers will learn about if statements in Java and their use The if statement: The condition required to create an if statement: Variations of if statements: An example using if statements:
Viewers will learn how to properly install Eclipse with the necessary JDK, and will take a look at an introductory Java program. Download Eclipse installation zip file: Extract files from zip file: Download and install JDK 8: Open Eclipse and …
Suggested Courses

656 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question