source: java-rpg-client/gamegui/TabbedWindow.java

package gamegui;

import java.awt.*;
import java.awt.event.*;
import java.util.*;

public class TabbedWindow extends Member {
        private ArrayList<Window> windows;
        private ArrayList<String> windowLabels;
        private Window activeWindow;
        private int tabHeight;
        private Font tabFont;
        
        public TabbedWindow(String newName, int newX, int newY, int newWidth, int newHeight, int newTabHeight, Font newFont) {
                super(newName, newX, newY, newWidth, newHeight);
                
                windows = new ArrayList<Window>();
                windowLabels = new ArrayList<String>();
                tabHeight = newTabHeight;
                activeWindow = null;
                tabFont = newFont;
        }
        
        public void add(Window newWindow, String name) {
                newWindow.offset(getX(), getY()+tabHeight);
                
                if(activeWindow == null)
                        activeWindow = newWindow;
                windows.add(newWindow);
                windowLabels.add(name);
        }
        
        public void clear() {
                activeWindow = windows.get(0);
                for(int x=0; x < windows.size(); x++)
                windows.get(x).clear();
        }
        
        public void offset(int xOffset, int yOffset) {
                super.offset(xOffset, yOffset);
                
                for(int x=0; x < windows.size(); x++)
                windows.get(x).offset(xOffset, yOffset);
        }
        
        public Window getWindow(String aName) {
                for(int x=0; x < windows.size(); x++)
                if(windows.get(x).getName().equals(aName))
                        return (Window)windows.get(x);
                
                return null;
        }
        
        public boolean handleEvent(MouseEvent e) {
                for(int x=0; x < windows.size(); x++) {
                if(isClicked(getX() + x*getWidth()/windows.size(), getY(), getWidth()/windows.size(), tabHeight, e.getX(), e.getY())) {
                        activeWindow = windows.get(x);
                        return true;
                        }
                }
                        
                return activeWindow.handleEvent(e);
        }
        
        private boolean isClicked(int x, int y, int width, int height, int mouseX, int mouseY) {
                return x <= mouseX && mouseX <= x+width && y <= mouseY && mouseY <= y+height;
        }
        
        public void draw(Graphics g) {
                FontMetrics metrics = g.getFontMetrics(tabFont);
                
                g.setColor(Color.black);
        g.fillRect(getX(), getY(), getWidth(), getHeight());
        
                g.setFont(tabFont);
        for(int x=0; x < windows.size(); x++)
        {
                g.setColor(Color.green);
                g.drawString(windowLabels.get(x), getX()+x*getWidth()/windows.size()+(getWidth()/windows.size()-metrics.stringWidth(windowLabels.get(x)))/2, getY() + (tabHeight + metrics.getHeight())/2 - 2);
                
                g.setColor(Color.red);
                        g.drawLine(getX()+x*getWidth()/windows.size(), getY(), getX()+x*getWidth()/windows.size(), getY()+tabHeight);
                        
                if(windows.get(x).equals(activeWindow)) {
                        ((Member)(windows.get(x))).draw(g);
                        g.setColor(Color.red);
                        g.drawRect(getX(), getY(), getWidth(), getHeight());
                g.drawLine(getX(), getY()+tabHeight, getX()+x*getWidth()/windows.size(), getY()+tabHeight);
                g.drawLine(getX()+(x+1)*getWidth()/windows.size(), getY()+tabHeight, getX()+getWidth(), getY()+tabHeight);
                }
        }
        }
        
        public String getActive() {
                if(activeWindow != null)
                        return activeWindow.getName();
                else
                        return "";
        }
}