Original Post
Trying to make a java text menu. When I hit the up or down arrow, my cursor doesn''t move.
On nextItem() it goes from 0 to 1, then back to 0. I want it to keep going until it gets to the length of the items in the menu, then go back to 0, and the opposite for previous.
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class TextMenu extends JPanel
{
public static final int CENTER = 0;
public static final int RIGHT = 1;
public static final int LEFT = 2;
public static final int WIDTH = 800;
public static final int HEIGHT = 600;
private int xC = 50;
private int yC = (int)(HEIGHT * .3);
private int justify = -1;
private String message = "Default Menu Item";
private Color color = null;
private int arrowX = getX();
private int arrowY;
protected Font font = null;
protected int currentItem = 0;
protected int items = 1;
protected int spacing = 0;
String[] sItem = null;
public TextMenu(int items, int spacing, Font font)
{
sItem = new String[items];
this.items = items;
this.font = font;
this.setFont(font);
this.spacing = spacing;
for (int i = 0; i < items; i++)
sItem[i] = "Default" + i;
}
public int getX() { return xC;}
public int getY() { return yC; }
public int getJustify() { return justify; }
public String getFontFamily() { return font.getFamily(); }
public String getMenuItem(int index) { return sItem[index]; }
public void setX(int xC) { this.xC = xC; }
public void setY(int yC) { this.yC = yC; }
public void setJustify(int justify) { this.justify = justify; }
public void setFont(Font font) { this.font = font; }
public void setMenuColor(Color color) { this.color = color; }
public void setMenuItemText(String text, int item) { sItem[item] = text; }
public void display(Graphics g)
{
g.setColor(color);
g.setFont(font);
FontMetrics fm = g.getFontMetrics(font);
int w = fm.stringWidth(sItem[0]);
int h = fm.getAscent();
int y = getY();
if (justify == CENTER) {
setX((WIDTH - w) / 2);
for (int i = 0; i < items; i++) {
w = fm.stringWidth(sItem[i]);
g.drawString(sItem[i], (WIDTH - w) / 2, y);
y += spacing + h;
}
} else if (justify == RIGHT) {
setX((WIDTH - w));
for (int i = 0; i < items; i++) {
w = fm.stringWidth(sItem[i]);
g.drawString(sItem[i], WIDTH-w, y);
y += spacing + h;
}
} else if (justify == LEFT) {
setX(50);
for (int i = 0; i < items; i++) {
g.drawString(sItem[i], getX(), y);
y += spacing + h;
}
} else {
for (int i = 0; i < items; i++) {
g.drawString(sItem[i], getX(), y);
y += spacing + h;
}
}
arrowY = getY() + ((spacing + h) * currentItem);
g.drawString(Integer.toString(arrowY),10,30);
g.drawString("-->",getX() - w + fm.stringWidth(".-"), arrowY);
}
public boolean done()
{
return false;
}
public void nextItem() {
System.out.println(getCurrentItem() + "getCurrentItem() 1"); //returns 0
int item = 0;
if(currentItem + 1 > items) {
item = 0;
System.out.println(item + "item if"); //never gets to this point
} else {
System.out.println(item + "item else 1"); //returns 0
item = currentItem + 1;
System.out.println(item + "item else 2"); //returns 1
}
setCurrentItem(item);
System.out.println(getCurrentItem() + "getCurrentItem() 2"); //returns 1
}
public void previousItem() {
int item = 0;
if(currentItem == 0)
item = items;
else
item = currentItem - 1;
setCurrentItem(item);
}
public void setCurrentItem(int item) {
if(item >= 0 && item < items)
{
currentItem = item;
}
}
public int getCurrentItem() { return currentItem; }
}
//relevant source from my test file
public boolean menu()
{
clear();
menu = new TextMenu(5,10,font);
menu.setJustify(menu.CENTER);
menu.setMenuItemText("Blah",0);
menu.setMenuItemText("Doh",1);
menu.setMenuColor(Color.white);
menu.display(g);
if (menu.done() == true)
return true;
return false;
}
public void keyPressed(KeyEvent e)
{
if (e.getKeyCode() == e.VK_UP) {
menu.previousItem();
} else if (e.getKeyCode() == e.VK_DOWN) {
menu.nextItem();
} else if(e.getKeyCode() == e.VK_ESCAPE) {
System.exit(0);
}
System.out.println(menu.getCurrentItem());
}
