import java.util.*;
class AmSketch {
    //skeemityybid (pa"iseta == pa"is on tyhi):
    static final byte SIMPLE = 10; 
    // yhe pa"iseta haruga
    
    static final byte LOOP = 11; 
    // yhe pa"iseta haruga
    
    static final byte SWITCH = 12; 
    // pa"isega, harudega CASE ja DEFAULT(0 voi enam)
    
    static final byte PARALLEL = 13; // harudega
  // s.h. harutyybid:
     static final   byte BRANCH = 0; // suvaline
     static final   byte CASE = 120; // lylitis
     static final   byte DEFAULT = 121; // lylitis

     byte type;
     Vector head; // ainult tyypi AmHead
     Vector subs;  // alamskeemid, mitteharu korral ainult tyypi AmSketch
     AmRow comment;
     AmRow headcomment;
   
     AmSketch parent; // ylemus-skeem
     AmView view; // vaade
     boolean icon; // kas on ikoniseeritud

      //transient short level;
     
     AmSketch (byte t){// konstruktor
	 type = t;
	 head = new Vector();
	 subs = new Vector();
	 comment = new AmRow();
	 headcomment = new AmRow();
	 parent = null;
	 view = null;
	 icon = false;
     }// konstruktor
   
      boolean nonBranch(){// pole haru?
       switch(type){
       case BRANCH: case CASE: case DEFAULT: return false;
       default: return true;
       }
     }//nonBranch()
  
      public AmView newView(){// uus selle skeemi vaade 
	if(view instanceof AmView1) return new AmView1();
	else if(view instanceof AmView2) return new AmView2();
	else  return new AmView3(); 
	//return null; //syntaksi jaoks
     }	
     
     public static AmSketch makeSketch(byte t){
     // teeb tyhja yhe haruga skeemi tyypi t (t on SIMPLE voi LOOP)
	 AmSketch sketch = new AmSketch(t);
	 AmSketch branch = new AmSketch(AmSketch.BRANCH);
         sketch.add(branch);
	 return sketch;      
      }//makeSketch()
  /*    
     public void addMember(AmSketch s){// lisada keha loppu
           subs.addElement(s);
           s.parent = this;
     }//addMember(AmSketch s)    
  */   
    
     
     // skeemi muutmise meetodid;
     // struktuurinoudeid ei kontrollita
     //  (lihtskeemil ja tsyklil ainult yks haru jne.)
     
     public void add(AmHead h){// lisada el-paise loppu
           head.addElement(h);
     }//add
     
     public void add(AmSketch s){
	// lisab skeemi s sellele skeemile loppu
	subs.addElement(s);
	s.parent = this;
     }//add
     
     public void add(AmNonSketch s){// lisada keha loppu
           subs.addElement(s);
     }//add(AmNonSketch s)
    
     public void delete(){
	// eemaldab selle skeemi
	if(this == Am.s){
	    return;
	}
	//leida ylemuses
	int i = parent.subs.indexOf(this);
	//eemaldada sealt
	parent.subs.removeElementAt(i);
     }//delete
     
      public void deleteHead(int i){
	// eemaldab selle skeemi el-paise nr. i
	head.removeElementAt(i);
     }//delete
     
     public void insert(AmSketch ps, int i){
	// lisab selle skeemi: ylemusse ps kohale i
	ps.subs.insertElementAt(this, i);
	this.parent = ps;
     }//insert
     
     public void insert(AmHead h, int i){
	// lisab selle skeemi paisesse kohale i
	head.insertElementAt(h,i);
	
	//this.parent = ps;
     }//insert
     
      // koopia tegemise meetod:
      public AmSketch makeCopy(){
	// teeb sellest skeemist koopia
	AmSketch sNew = new AmSketch(type);
	// kopeerida el-paised:
	for(Enumeration e = head.elements(); e.hasMoreElements();){
	    sNew.head.addElement(((AmHead)(e.nextElement())).makeCopy());
	}
	// kommentaar ja ikoniseeritus:
	sNew.comment = comment.makeCopy();
	sNew.icon = icon; 
	// liikmed:
	for(Enumeration e = subs.elements(); e.hasMoreElements();){
	    Object o = (e.nextElement());
	    if(o instanceof AmSketch)
		sNew.add(((AmSketch)o).makeCopy());
	    else
		sNew.add(((AmNonSketch)o).makeCopy());
	}//for
	// vaade:
	if(view instanceof AmView1) sNew.setView1();
	else if(view instanceof AmView2) sNew.setView2();
	else sNew.setView3();
	return sNew;
     }//makeCopy
     
      public void setView1(){
	// seada vaade skeemis s:
	 view = new AmView1();
	// ja ko~igis alamskeemides:
	for(Enumeration e = subs.elements();
		e.hasMoreElements();){
		Object o = e.nextElement();
		if (o instanceof AmSketch) ((AmSketch)o).setView1();
	}
    } 
    public void setView2(){
	// seada vaade skeemis s:
	 view = new AmView2();
	// ja ko~igis alamskeemides:
	for(Enumeration e = subs.elements();
		e.hasMoreElements();){
		Object o = e.nextElement();
		if (o instanceof AmSketch) ((AmSketch)o).setView2();
	}
    }  
     public void setView3(){
	// seada vaade skeemis s:
	 view = new AmView3();
	// ja ko~igis alamskeemides:
	for(Enumeration e = subs.elements();
		e.hasMoreElements();){
		Object o = e.nextElement();
		if (o instanceof AmSketch) ((AmSketch)o).setView3();
	}
    }  
    
     public void changeView(){
	
	// ko~igis alamskeemides:
	for(Enumeration e = subs.elements();
		e.hasMoreElements();){
		Object o = e.nextElement();
		if(o instanceof AmSketch)
		((AmSketch)o).changeView();
	}
	// muuta vaade selles skeemis:
	if (view instanceof AmView1) view = new AmView2();
	else if (view instanceof AmView2) view = new AmView3(); 
	else  view = new AmView1();
    }
     
}//class AmSketch