package bean3;

import java.awt.*;
import java.awt.event.*;
import java.beans.*;

public class BarTexto extends Panel implements java.io.Serializable{
    private double maximo=1.0;
    private double minimo=0.0;
    private double indicador=0.0;
    TextField textField1 = new TextField();
    Scrollbar scrollbar1 = new Scrollbar();
    BorderLayout borderLayout1 = new BorderLayout();
    private transient PropertyChangeSupport propertyChangeListeners = new PropertyChangeSupport(this);

    public BarTexto() {
        try  {
            jbInit();
        }
        catch (Exception ex) {
            ex.printStackTrace();
        }
    }

    private void jbInit() throws Exception {
        this.setSize(new Dimension(100, 20));
        textField1.setText("0.0");
        textField1.setColumns(3);
        textField1.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(ActionEvent e) {
                textField1_actionPerformed(e);
            }
        });
        textField1.addKeyListener(new java.awt.event.KeyAdapter() {
            public void keyTyped(KeyEvent e) {
                textField1_keyTyped(e);
            }
        });
        scrollbar1.setValue(50);
        scrollbar1.setOrientation(0);
        scrollbar1.addAdjustmentListener(new java.awt.event.AdjustmentListener() {
            public void adjustmentValueChanged(AdjustmentEvent e) {
                scrollbar1_adjustmentValueChanged(e);
            }
        });
        this.setLayout(borderLayout1);
        this.add(textField1, BorderLayout.WEST);
        this.add(scrollbar1, BorderLayout.CENTER);
    }

    void scrollbar1_adjustmentValueChanged(AdjustmentEvent e) {
        int pos=e.getValue();
        textField1.setText(String.valueOf(valorDouble(pos)));
        setIndicador(valorDouble(pos));
    }

    void textField1_keyTyped(KeyEvent e) {
        char c=e.getKeyChar();
        if((c>='0' && c<='9')||(c=='.')||(c==KeyEvent.VK_DELETE)||(c==KeyEvent.VK_BACK_SPACE)){
            return;
        }
        e.consume();
    }
    void textField1_actionPerformed(ActionEvent e) {
        double pos=Double.valueOf(textField1.getText()).doubleValue();
        if(pos<minimo) pos=minimo;
        if(pos>maximo) pos=maximo;
        scrollbar1.setValue(valorEntero(pos));
        setIndicador(pos);
    }

    private int valorEntero(double x){
        return (int)((100*(x-minimo))/(maximo-minimo));
    }
    private double valorDouble(int x){
        return (minimo+x*(maximo-minimo)/100);
    }


    public synchronized void removePropertyChangeListener(PropertyChangeListener l) {
        propertyChangeListeners.removePropertyChangeListener(l);
    }

    public synchronized void addPropertyChangeListener(PropertyChangeListener l) {
        propertyChangeListeners.addPropertyChangeListener(l);
    }


    public Dimension getPreferredSize() {
        FontMetrics fm=getFontMetrics(getFont());
        return new Dimension(20*fm.stringWidth("0"), 2*fm.getHeight());
    }

    public Dimension getMinimumSize() {
        return getPreferredSize();
    }
    public void setMaximo(double newMaximo) {
        maximo = newMaximo;
    }

    public double getMaximo() {
        return maximo;
    }

    public void setMinimo(double newMinimo) {
        minimo = newMinimo;
    }

    public double getMinimo() {
        return minimo;
    }

    public void setIndicador(double newIndicador) {
        if(newIndicador<minimo) newIndicador=minimo;
        if(newIndicador>maximo) newIndicador=maximo;
        double  oldIndicador = indicador;
        indicador = newIndicador;
        textField1.setText(String.valueOf(indicador));
        scrollbar1.setValue(valorEntero(indicador));
        propertyChangeListeners.firePropertyChange("indicador", new Double(oldIndicador), new Double(newIndicador));
    }

    public double getIndicador() {
        return indicador;
    }
 }