package org.catacomb.druid.swing;
   
   import org.catacomb.druid.event.LabelActor;
   import org.catacomb.interlish.interact.DComponent;
   import org.catacomb.interlish.structure.MouseActor;
   import org.catacomb.interlish.structure.MouseSource;
   
   
   import java.awt.Color;
  import java.awt.Dimension;
  import java.awt.Graphics;
  import java.awt.event.InputEvent;
  import java.awt.event.MouseEvent;
  import java.awt.event.MouseListener;
  import java.awt.event.MouseMotionListener;
  
  import javax.swing.JPanel;
  
  
  
  // REF refactor DFloatSlider to extend this
  
  public class DSlider extends JPanel implements DComponent, MouseSource, MouseListener,
      MouseMotionListener {
  
      static final long serialVersionUID = 1001;
  
      LabelActor labelActor;
  
      int nmax;
      int islider;
  
      String descriptionText;
  
      String[] values;
  
      int xdown;
      int ydown;
      long downtime;
  
  
      Color bgColor;
      RolloverEffect rollover;
  
  
      int state;
      final static int NONE = 0;
      final static int DRAG = 1;
  
  
      public DSlider() {
          this(1);
      }
  
  
      public DSlider(int n) {
          nmax = n;
          values = new String[n];
          for (int i = 0; i < n; i++) {
              values[i] = "" + i;
          }
  
          addMouseListener(this);
          addMouseMotionListener(this);
  
          attachRollover();
      }
  
      public void setTooltip(String s) {
          setToolTipText(s);
      }
  
  
      public void setNPoint(int npt) {
          nmax = npt;
          values = new String[nmax];
          for (int i = 0; i < nmax; i++) {
              values[i] = "" + i;
          }
          repaint();
      }
  
  
      public void setMouseActor(MouseActor ma) {
          addMouseListener(new DMouseRelay(ma));
      }
  
  
      public void setBg(Color col) {
          setBackground(col);
          bgColor = col;
          rollover.setBg(col);
      }
  
  
      public void attachRollover() {
          rollover = new RolloverEffect(this);
          addMouseListener(rollover);
      }
 
 
     public void setLabelActor(LabelActor lact) {
         labelActor = lact;
     }
 
 
     private void notifyChange() {
         if (labelActor != null) {
             labelActor.labelAction("change", true);
         }
     }
 
 
     public void export() {
         notifyChange();
     }
 
 
     public void setValues(String[] sa) {
         values = sa;
         nmax = sa.length;
         showValue(0);
     }
 
 
     public int getValue() {
         return islider;
     }
 
 
 
     public void showValue(int iv) {
         if (iv != islider) {
             islider = iv;
             repaint();
         }
     }
 
 
     public Dimension getMinimumSize() {
         return new Dimension(80, 20);
     }
 
 
     public Dimension getPreferredSize() {
         return new Dimension(140, 22);
     }
 
 
 
     public void paintComponent(Graphics g) {
         realPaint(g);
     }
 
 
 
     public void realPaint(Graphics g) {
         int w = getWidth();
         int h = getHeight();
         if (bgColor == null) {
             bgColor = getBackground();
         }
         g.setColor(bgColor);
         g.fillRect(0, 0, w, h);
 
         paintArrows(g);
 
         paintKnob(g);
 
         if (descriptionText != null) {
             g.setColor(Color.black);
             g.drawString(descriptionText, 40, h-5);
         }
     }
 
 
 
     private void paintArrows(Graphics g) {
         int w = getWidth();
         int h = getHeight();
 
         Color cbg = bgColor;
         Color cbr = cbg.brighter();
         Color cdk = cbg.darker();
 
         int hh = h / 2;
         g.setColor(cbr);
         g.drawLine(4, hh, 15, 4);
 
         g.drawLine(w - 15, h - 4, w - 15, 4);
 
         // g.drawLine(w-15, 4, w-10, hh);
 
 
         g.setColor(cdk);
         g.drawLine(15, 4, 15, h - 4);
         // g.drawLine(15, h-4, 10, hh);
 
 
         g.drawLine(4, hh, 15, h - 4);
 
         g.drawLine(w - 15, h - 4, w - 4, hh);
         g.drawLine(w - 15, 4, w - 4, hh);
 
     }
 
 
     private void paintKnob(Graphics g) {
         int width = getWidth();
         int height = getHeight();
         int hh = height / 2;
 
         if (nmax < 1) {
             nmax = 1;
         }
 
         if (islider >= nmax) {
             islider = nmax - 1;
         }
 
         double f = (islider + 0.5) / nmax;
 
         int icen = (int)(25 + f * (width - 50));
         if (icen < 25) {
             icen = 25;
         }
         if (icen > width - 25) {
             icen = width - 25;
         }
         drawUpButton(g, icen, hh, 5, 5);
 
         if (islider >= 0 && values != null && islider < values.length && values[islider] != null) {
             g.setColor(Color.black);
             if (icen < 80) {
                 g.drawString(values[islider], 100, 18);
             } else {
                 g.drawString(values[islider], 30, 18);
             }
         }
 
     }
 
 
     private void drawUpButton(Graphics g, int icx, int icy, int hw, int hh) {
         Color c = getBackground();
 
         g.setColor(c.darker());
         g.drawLine(icx - hw - 1, icy + hh + 1, icx + hw + 1, icy + hh + 1);
         g.drawLine(icx - hw, icy + hh, icx + hw, icy + hh);
 
         g.drawLine(icx + hw + 1, icy - hh - 1, icx + hw + 1, icy + hh + 1);
         g.drawLine(icx + hw, icy - hh, icx + hw, icy + hh);
 
 
         g.setColor(c.brighter());
         g.drawLine(icx - hw - 1, icy - hh - 1, icx + hw + 1, icy - hh - 1);
         g.drawLine(icx - hw, icy - hh, icx + hw, icy - hh);
 
         g.drawLine(icx - hw - 1, icy - hh - 1, icx - hw - 1, icy + hh + 1);
         g.drawLine(icx - hw, icy - hh, icx - hw, icy + hh);
 
 
 
     }
 
 
     public void nudgeLeft() {
         if (islider > 0) {
             islider = islider - 1;
             repaint();
             export();
         }
     }
 
 
     public void nudgeRight() {
         if (islider < nmax - 1) {
             islider = islider + 1;
             repaint();
             export();
         }
     }
 
 
     public void rsfMouseDown(int x, int y, long when, int button) {
 
         state = NONE;
         if (x > 15 && x < getWidth() - 15) {
             state = DRAG;
             moveTo(x);
 
         } else if (x < 15) {
             nudgeLeft();
 
         } else if (x > getWidth() - 15) {
             nudgeRight();
         }
     }
 
 
     public void rsfMouseUp(int x, int y) {
     }
 
 
     public void rsfMouseDrag(int x, int y) {
         if (state == DRAG) {
             moveTo(x);
         }
     }
 
 
     private void moveTo(int x) {
         int width = getWidth();
 
 
         double frel = (x - 15.) / (width - 30.);
         int oslider = islider;
         islider = (int)(frel * nmax + 0.0);
         if (islider < 0) {
             islider = 0;
         }
         if (islider > nmax - 1) {
             islider = nmax - 1;
         }
         if (islider != oslider) {
             export();
             repaint();
         }
     }
 
 
 
     // map listeners to rfsXXX methods;
 
     public void mouseDragged(MouseEvent e) {
         int x = e.getX();
         int y = e.getY();
         rsfMouseDrag(x, y);
     }
 
 
     public void mouseMoved(MouseEvent e) {
     }
 
 
     public void mousePressed(MouseEvent e) {
         int x = e.getX();
         int y = e.getY();
         long when = e.getWhen();
         int modif = e.getModifiers();
         int button = 0;
         if (modif == InputEvent.BUTTON1_MASK) {
             button = 1;
         } else if (modif == InputEvent.BUTTON2_MASK) {
             button = 2;
         } else if (modif == InputEvent.BUTTON3_MASK) {
             button = 3;
         }
         rsfMouseDown(x, y, when, button);
     }
 
 
 
     public void mouseReleased(MouseEvent e) {
         int x = e.getX();
         int y = e.getY();
         rsfMouseUp(x, y);
     }
 
 
 
     public void mouseEntered(MouseEvent e) {
         requestFocus();
     }
 
 
     public void mouseExited(MouseEvent e) {
     }
 
 
     public void mouseClicked(MouseEvent e) {
         requestFocus();
     }
 
 
     public void pointShown(int ifr, String desc) {
         descriptionText = desc;
         showValue(ifr);
     }
 
 }