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/*
 *Autor original del código: Jose Castillo. http://lawebdeljose.blogspot.com 
 *
 *Este código puede ser modificado y usado como se quiera. Pero, por favor, respetad estos comentarios. 
 *Ha sido creado usando el IDE Net Beans 5.0 .
 *
 Este ejercicio sirve para ver el tema de la recursividad. 
 puede ser útil para ver cómo funciona una ventana simple de Java.
 Tambien se ve una simple implementación de una cola con la clase nodo y sus métodos recursivos.
 *
 *
 *La ventana es muy simple porque lo que interesa es lo que hace dentro.
 *
 *
 **/


public class cola extends javax.swing.JFrame {
    nodo primero;
    nodo ultimo;
    /** Creates new form cola */
    public cola() {
        initComponents();
        
    }
    
    
    
    /// Este metodo lo ha generado automaticamente Net Beans.
    // <editor-fold defaultstate="collapsed" desc=" Generated Code ">
    private void initComponents() {
        jScrollPane1 = new javax.swing.JScrollPane();
        jTextArea1 = new javax.swing.JTextArea();
        jButton1 = new javax.swing.JButton();
        jTextField1 = new javax.swing.JTextField();
        jLabel1 = new javax.swing.JLabel();
        jButton2 = new javax.swing.JButton();
        jButton3 = new javax.swing.JButton();
        jTextField2 = new javax.swing.JTextField();
        jTextField3 = new javax.swing.JTextField();
        jLabel2 = new javax.swing.JLabel();
        jLabel3 = new javax.swing.JLabel();
        jLabel4 = new javax.swing.JLabel();

        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
        jTextArea1.setColumns(20);
        jTextArea1.setEditable(false);
        jTextArea1.setRows(5);
        jScrollPane1.setViewportView(jTextArea1);

        jButton1.setText("A\u00f1adir a la Cola");
        jButton1.addMouseListener(new java.awt.event.MouseAdapter() {
            public void mouseClicked(java.awt.event.MouseEvent evt) {
                jButton1MouseClicked(evt);
            }
        });

        jLabel1.setText("Cola");

        jButton2.setText("Quitar de la cola");
        jButton2.addMouseListener(new java.awt.event.MouseAdapter() {
            public void mouseClicked(java.awt.event.MouseEvent evt) {
                jButton2MouseClicked(evt);
            }
        });

        jButton3.setText("Buscar");
        jButton3.addMouseListener(new java.awt.event.MouseAdapter() {
            public void mouseClicked(java.awt.event.MouseEvent evt) {
                jButton3MouseClicked(evt);
            }
        });

        jLabel2.setText("Aqu\u00ed puedes poner lo que quieres a\u00f1adir");

        jLabel3.setText("Pon el n\u00famero que quieres quitar");

        jLabel4.setText("Busca por contenido");

        org.jdesktop.layout.GroupLayout layout = new org.jdesktop.layout.GroupLayout(getContentPane());
        getContentPane().setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
            .add(layout.createSequentialGroup()
                .addContainerGap()
                .add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
                    .add(layout.createSequentialGroup()
                        .add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
                            .add(layout.createSequentialGroup()
                                .add(jButton1)
                                .addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED)
                                .add(jTextField1, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, 157, Short.MAX_VALUE))
                            .add(jScrollPane1, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, 270, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE))
                        .addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED))
                    .add(layout.createSequentialGroup()
                        .add(jLabel1, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, 95, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
                        .add(181, 181, 181)))
                .add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
                    .add(jLabel3)
                    .add(jLabel2, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, 195, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
                    .add(layout.createSequentialGroup()
                        .add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.TRAILING, false)
                            .add(org.jdesktop.layout.GroupLayout.LEADING, jButton3, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                            .add(org.jdesktop.layout.GroupLayout.LEADING, jButton2, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
                        .addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED)
                        .add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.TRAILING)
                            .add(layout.createSequentialGroup()
                                .add(jTextField3, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, 40, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
                                .addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED, 46, Short.MAX_VALUE))
                            .add(jTextField2, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, 86, Short.MAX_VALUE)))
                    .add(layout.createSequentialGroup()
                        .add(10, 10, 10)
                        .add(jLabel4)))
                .addContainerGap())
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
            .add(layout.createSequentialGroup()
                .add(21, 21, 21)
                .add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.BASELINE)
                    .add(jLabel1)
                    .add(jLabel3))
                .addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED)
                .add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
                    .add(jScrollPane1, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, 193, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
                    .add(layout.createSequentialGroup()
                        .add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.BASELINE)
                            .add(jButton2)
                            .add(jTextField3, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE))
                        .addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED)
                        .add(jLabel4)
                        .addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED)
                        .add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.BASELINE)
                            .add(jButton3)
                            .add(jTextField2, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE))))
                .addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED)
                .add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.BASELINE)
                    .add(jButton1)
                    .add(jTextField1, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
                    .add(jLabel2, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, 31, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE))
                .addContainerGap(29, Short.MAX_VALUE))
        );
        pack();
    }// </editor-fold>

    
    //fin del texto automatico.
    
    
    private void jButton3MouseClicked(java.awt.event.MouseEvent evt) {                                      
   //boton de buscar
        int contador=1;
        nodo aux=primero;
        while (aux!=null){
       System.out.println(contador);
        if (aux.dato.equals(jTextField2.getText())){ //comparar strings
        aux=null;   
        System.out.println("esta en la posicion.. "+contador);
        } else {  
        aux=aux.post;
        contador++;
        }
        }
    }                                     

    private void jButton2MouseClicked(java.awt.event.MouseEvent evt) {                                      
  //boton de borrar
        
        int aux=Integer.valueOf( jTextField3.getText() ).intValue();
        int aux1=1;
        nodo auxi=primero;
        while (aux1<=aux){  //recorrer la cola hasta que se encuentra el que hay que borrar
        
        if (aux==aux1){
            
       if (aux!=1) auxi.ant.post=auxi.post;
       else primero=auxi.post;
       if (auxi.post!=null) auxi.post.ant=auxi.ant;
       else {ultimo=auxi.ant;ultimo.post=null;}
       
        }
        auxi=auxi.post;
        aux1++;}
        jTextArea1.setText(primero.imprimir(0));
        
        
        
    }                                     

    private void jButton1MouseClicked(java.awt.event.MouseEvent evt) {                                      
// cuando pulsamos el boton
        
        if (primero==null){ //insertar el primero
            primero = new nodo(jTextField1.getText());  
            ultimo=primero;  
        }
        else{ //insertar los demas
            nodo n=new nodo(jTextField1.getText());
            ultimo.insertar(n);
           ultimo = n;
        }
        jTextArea1.setText(primero.imprimir(0));
        
        
        
    }                                     
    
   
    public static void main(String args[]) {
        java.awt.EventQueue.invokeLater(new Runnable() {
            public void run() {
                new cola().setVisible(true);
            }
        });
    }
    
    // Variables declaration - do not modify
    private javax.swing.JButton jButton1;
    private javax.swing.JButton jButton2;
    private javax.swing.JButton jButton3;
    private javax.swing.JLabel jLabel1;
    private javax.swing.JLabel jLabel2;
    private javax.swing.JLabel jLabel3;
    private javax.swing.JLabel jLabel4;
    private javax.swing.JScrollPane jScrollPane1;
    private javax.swing.JTextArea jTextArea1;
    private javax.swing.JTextField jTextField1;
    private javax.swing.JTextField jTextField2;
    private javax.swing.JTextField jTextField3;
    // End of variables declaration
    
}


class nodo { //declaracion de la clase nodo
String dato;
nodo ant;
nodo post;
 
//constructor
public nodo(String d){
dato=d;
ant=null;
post=null;
}

public void insertar(nodo n){  //relaciones entre objetos de la misma clase
n.post = post;
n.ant = this;
post = n;
}

public String imprimir(int i){  //recursividad
    i++;
    if(post!=null)
return(i+" "+dato+"\n"+post.imprimir(i));
    else return(i+" "+dato);
}
}