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

public class Alignment extends PrefEditor implements java.io.Serializable {
  private static final long serialVersionUID = Version.getSUID();

//  static Alignment last = new Alignment();

  public boolean zerox = false;
  public boolean zeroy = false;
  public boolean zerorot = false;
  public boolean zeroscale = false;

  public boolean distributex = false;
  public boolean distributey = false;

  public boolean rotation = false;
  public boolean scale = false;
  public boolean x = true;
  public boolean y = true;

  public boolean rotatefirst = true;

//  public boolean selection = true;
//  public boolean absolute = false;
//  public boolean datum = false;
//  public boolean floating = false;

  public Vector targets = null;

  public transient ViewTransform source;
  public int mask = 0;

  public Alignment() {
//    System.out.println("new alignment");
    name = "Alignment";
  }

//  public void copy(Alignment that) {
//    x = that.x;
//    y = that.y;
//    zero=that.zero;
//    rotation = that.rotation;
//    scale = that.scale;
//    selection = that.selection;
//    absolute = that.absolute;
//    datum = that.datum;
//    floating = that.floating;
//  }

  transient ViewTransform sel = null;

//  public Alignment(Symbol sel) {
//    name = "Align";
//    this.sel = sel;
//    copy(last);
//  }

  public void setSource(Symbol newal) {
    if (newal == null || !(newal instanceof Aligner))
      ErrorLog.log("Select exctly one symbol to allign things to.\n"+
        	   "(not all things can be aligners\n"+
        	   "more will be added in the future)\n"+
        	   "Tried to allign to "+newal);
    else sel = ((Aligner)newal).getAlignTransform();;
  }

  public void newPane() throws NoSuchFieldException {
//    System.out.println("alignment newpane");
//    pane = new javax.swing.Box(BoxLayout.Y_AXIS);

//    javax.swing.Box row = new javax.swing.Box(BoxLayout.X_AXIS);
    pane.setLayout(new GridLayout(4,4));

    pane.add(new JLabel("Scale"));
    ButtonGroup group = new ButtonGroup();
    setParm("scale","Slave");
    group.add(setRadio(pane,"zeroscale","Resize"));
    pane.add(new JLabel(""));
    JRadioButton nochange = new JRadioButton("No Action",!zeroscale);
    pane.add(nochange);
    group.add(nochange);

    pane.add(new JLabel("Rotation"));
    group = new ButtonGroup();
    setParm("rotation","Slave");
    group.add(setRadio(pane,"zerorot","Align"));
    pane.add(new JLabel(""));
    nochange = new JRadioButton("No action",!zerorot);
    pane.add(nochange);
    group.add(nochange);

    pane.add(new JLabel("X"));
    group = new ButtonGroup();
    setParm("x","Slave");
    group.add(setRadio(pane,"zerox","Align"));
    JRadioButton dist = setRadio(pane,"distributex","Distribute");
    group.add(dist);
    dist.setEnabled(targets.size()>1);
    nochange = new JRadioButton("No action",!zerox && !distributex);
    pane.add(nochange);
    group.add(nochange);

    pane.add(new JLabel("Y"));
    group = new ButtonGroup();
    setParm("y","Slave");
    group.add(setRadio(pane,"zerox","Align"));
    dist = setRadio(pane,"distributey","Distribute");
    group.add(dist);
    dist.setEnabled(targets.size()>1);
    nochange = new JRadioButton("No action",!zerox && !distributex);
    pane.add(nochange);
    group.add(nochange);

//    pane.add(row);

//    ButtonGroup group = new ButtonGroup();
//    group.add((JRadioButton)setRadio(pane,"absolute","Absolute"));
//    group.add((JRadioButton)setRadio(pane,"datum","Datum"));
//    group.add((JRadioButton)setRadio(pane,"floating","Float"));
//    group.add((JRadioButton)setRadio(pane,"selection","Use Aligner"));
//    System.out.println("newpane return");
  }

  public void save() {
    if (pane==null) return;
    super.save();
    apply();
  }

  public void apply() {
    source = sel;
//    if (selection && (sel!=null)) source = sel;
//    else if (absolute) source = Aligner.absolute;
//    else if (datum) source = Aligner.datum;
//    else if (floating) source = Aligner.floating;

    mask =0;
    if (x) mask+=1;
    if (y) mask+=2;
    if (scale) mask+=4;
    if (rotation) mask+=8;

    source.alignAll(targets,this);
//    System.out.println("mask ="+mask+" source = "+source);
//    last.copy(this);
  }

  public void setTargets(HashSet newtargets) {
    targets = new Vector();
    for (Iterator it = newtargets.iterator();it.hasNext();) {
      Symbol item = (Symbol)it.next();
      if (item instanceof Aligner)
        targets.add(((Aligner)item).getAlignTransform());
    }
  }
}