package demos.nehe.lesson32;import demos.common.GLDisplay;import java.awt.event.KeyEvent;import java.awt.event.KeyListener;import java.awt.event.MouseEvent;import java.awt.event.MouseListener;import java.awt.event.MouseMotionListener;import javax.swing.KeyStroke;class InputHandler implements KeyListener, MouseListener, MouseMotionListener {    private final Renderer renderer;    public InputHandler(GLDisplay glDisplay, Renderer renderer) {        this.renderer = renderer;        glDisplay.registerKeyStrokeForHelp(KeyStroke.getKeyStroke(KeyEvent.VK_SPACE, 0), "Restart game");    }    public void keyReleased(KeyEvent e) {    }    public void keyTyped(KeyEvent e) {    }    public void keyPressed(KeyEvent e) {        switch (e.getKeyCode()) {            case KeyEvent.VK_SPACE:                renderer.restartGame();                break;        }    }    public void mouseClicked(MouseEvent e) {    }    public void mousePressed(MouseEvent e) {        renderer.setPickPoint(e.getPoint(), true);    }    public void mouseReleased(MouseEvent e) {    }    public void mouseEntered(MouseEvent e) {    }    public void mouseExited(MouseEvent e) {    }    public void mouseDragged(MouseEvent e) {    }    public void mouseMoved(MouseEvent e) {        renderer.setPickPoint(e.getPoint(), false);    }}