// IIRFilterDesign.java

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

public class IIRFilterDesign extends Frame {

  float rate = 8000.0f;   // fixed sampling rate
  int freqPoints = 250;   // number of points in FR plot
  int maxOrder = 16;      // maximum filter order
  int order;
  String filterType, prototype;
  float[] gain = new float[freqPoints+1];
  IIRFilter filter = new IIRFilter();
  GraphPlot frPlot = new GraphPlot();
  PoleZeroPlot pzPlot = new PoleZeroPlot();
  boolean isStandalone = true; //JSS false;
  BorderLayout borderLayout1 = new BorderLayout();
  Panel pnlControls = new Panel();
  GridLayout gridLayout1 = new GridLayout();
  Panel pnlLeftPanel = new Panel();
  GridLayout gridLayout2 = new GridLayout();
  Panel pnlRightPanel = new Panel();
  GridLayout gridLayout3 = new GridLayout();
  Panel pnlFilterType = new Panel();
  FlowLayout flowLayout1 = new FlowLayout();
  Label lblFilterType = new Label();
  CheckboxGroup cbgFilterType = new CheckboxGroup();
  Checkbox cbLowPass = new Checkbox();
  Checkbox cbBandPass = new Checkbox();
  Checkbox cbHighPass = new Checkbox();
  Panel pnlPrototype = new Panel();
  FlowLayout flowLayout2 = new FlowLayout();
  Label lblPrototype = new Label();
  CheckboxGroup cbgPrototype = new CheckboxGroup();
  Checkbox cbButterworth = new Checkbox();
  Checkbox cbChebyshev = new Checkbox();
  Panel pnlOrder = new Panel();
  FlowLayout flowLayout3 = new FlowLayout();
  Label lblOrder = new Label();
  TextField tfOrder = new TextField();
  Panel pnlPassband = new Panel();
  FlowLayout flowLayout4 = new FlowLayout();
  Label lblPassband = new Label();
  TextField tfFreq1 = new TextField();
  Label lblTo = new Label();
  TextField tfFreq2 = new TextField();
  Label lblHz = new Label();
  Panel pnlRipple = new Panel();
  FlowLayout flowLayout5 = new FlowLayout();
  Label lblRipple = new Label();
  TextField tfRipple = new TextField();
  Label lblRippleUnit = new Label();
  Panel pnlButtons1 = new Panel();
  Panel pnlMinGain = new Panel();
  FlowLayout flowLayout6 = new FlowLayout();
  FlowLayout flowLayout7 = new FlowLayout();
  Button btnResponse = new Button();
  Button btnDesign = new Button();
  Label lblMinGain = new Label();
  Choice chMinGain = new Choice();
  Label lblMinGainUnit = new Label();
  Button btnPoleZero = new Button();
  Label lblMaxOrder = new Label();
  Panel pnlDisplay = new Panel();
  CardLayout cardLayout1 = new CardLayout();
  Panel pnlPZPlot = new Panel();
  Panel pnlFRPlot = new Panel();
  BorderLayout borderLayout2 = new BorderLayout();
  BorderLayout borderLayout3 = new BorderLayout();
  Panel pnlButtons2 = new Panel();
  FlowLayout flowLayout8 = new FlowLayout();
  Panel pnlCoeffs = new Panel();
  BorderLayout borderLayout4 = new BorderLayout();
  TextArea txtCoeffs = new TextArea();
  Button btnCoeffs = new Button();

  //Get a parameter value
  public String getParameter(String key, String def) {
    //return isStandalone ? System.getProperty(key, def) :
    //  (getParameter(key) != null ? getParameter(key) : def);
    return new String("");
  }

  //Construct the Frame
  public IIRFilterDesign() {
    init();
  }

  //Initialize the Frame
  public void init() {
    try { jbInit(); } catch (Exception e) { e.printStackTrace(); }
  }

  //Component initialization
  public void jbInit() throws Exception{
    Font f  = new Font("Dialog", 0, 11);
    this.setSize(new Dimension(600, 400));
    gridLayout1.setColumns(2);
    gridLayout2.setColumns(1);
    gridLayout3.setRows(4);
    gridLayout3.setColumns(1);
    flowLayout1.setAlignment(0);
    lblFilterType.setFont(f);
    lblFilterType.setText("Filter type:");
    cbLowPass.setFont(f);
    cbLowPass.setLabel("LP");
    cbLowPass.setCheckboxGroup(cbgFilterType);
    cbLowPass.addItemListener(new IIRFilterDesign_cbLowPass_itemAdapter(this));
    cbBandPass.setFont(f);
    cbBandPass.setLabel("BP");
    cbBandPass.setCheckboxGroup(cbgFilterType);
    cbBandPass.addItemListener(new IIRFilterDesign_cbBandPass_itemAdapter(this));
    cbHighPass.setFont(f);
    cbHighPass.setLabel("HP");
    cbHighPass.setCheckboxGroup(cbgFilterType);
    cbHighPass.addItemListener(new IIRFilterDesign_cbHighPass_itemAdapter(this));
    cbLowPass.setState(true);
    flowLayout2.setAlignment(0);
    lblPrototype.setFont(f);
    lblPrototype.setText("Prototype:");
    cbButterworth.setFont(f);
    cbButterworth.setLabel("Butterworth");
    cbButterworth.setCheckboxGroup(cbgPrototype);
    cbButterworth.addItemListener(new IIRFilterDesign_cbButterworth_itemAdapter(this));
    cbChebyshev.setFont(f);
    cbChebyshev.setLabel("Chebyshev");
    cbChebyshev.setCheckboxGroup(cbgPrototype);
    cbChebyshev.addItemListener(new IIRFilterDesign_cbChebyshev_itemAdapter(this));
    cbButterworth.setState(true);
    flowLayout3.setAlignment(0);
    lblOrder.setFont(f);
    lblOrder.setText("Filter order:");
    tfOrder.setFont(f);
    tfOrder.setText("1");
    tfOrder.setColumns(3);
    tfOrder.addTextListener(new IIRFilterDesign_tfOrder_textAdapter(this));
    lblMaxOrder.setFont(new Font("Dialog", 2, 11));
    lblMaxOrder.setText("(max " + String.valueOf(maxOrder) + ")" );
    flowLayout8.setAlignment(0);
    txtCoeffs.setText("Filter Coefficients\n\n");
    btnCoeffs.addActionListener(new IIRFilterDesign_btnCoeffs_actionAdapter(this));
    btnCoeffs.setEnabled(false);
    btnCoeffs.setLabel("Coefficients");
    pnlCoeffs.setLayout(borderLayout4);
    pnlButtons2.setLayout(flowLayout8);
    pnlFRPlot.setLayout(borderLayout3);
    frPlot.setPlotStyle(GraphPlot.SPECTRUM);
    frPlot.setTracePlot(true);
    frPlot.setLogScale(true);
    pzPlot.setSize(new Dimension(300, 268));
    frPlot.setBgColor(Color.lightGray);
    frPlot.setPlotColor(Color.blue);
    frPlot.setAxisColor(Color.darkGray);
    frPlot.setGridColor(Color.darkGray);
    pnlFRPlot.add(frPlot, BorderLayout.CENTER);
    pnlCoeffs.add(txtCoeffs, BorderLayout.CENTER);
    pnlPZPlot.setLayout(borderLayout2);
    pnlPZPlot.add(pzPlot, BorderLayout.CENTER);
    pnlDisplay.setLayout(cardLayout1);
    pnlDisplay.add(pnlPZPlot, "PZPlot");
    pnlDisplay.add(pnlFRPlot, "FRPlot");
    pnlDisplay.add(pnlCoeffs, "Coeffs");
    flowLayout4.setAlignment(0);
    lblPassband.setFont(f);
    lblPassband.setText("Passband:");
    tfFreq1.setFont(f);
    tfFreq1.setText("0");
    tfFreq1.setColumns(5);
    tfFreq1.addTextListener(new IIRFilterDesign_tfFreq1_textAdapter(this));
    lblTo.setFont(f);
    lblTo.setAlignment(1);
    lblTo.setText("to");
    tfFreq2.setFont(f);
    tfFreq2.setText("1000");
    tfFreq2.setColumns(5);
    tfFreq2.addTextListener(new IIRFilterDesign_tfFreq2_textAdapter(this));
    lblHz.setFont(f);
    lblHz.setText("Hz");
    flowLayout5.setAlignment(0);
    lblRipple.setEnabled(false);
    lblRipple.setFont(f);
    lblRipple.setText("Passband ripple:");
    tfRipple.setEnabled(false);
    tfRipple.setFont(f);
    tfRipple.setText("1.0");
    tfRipple.setColumns(3);
    tfRipple.addTextListener(new IIRFilterDesign_tfRipple_textAdapter(this));
    lblRippleUnit.setEnabled(false);
    lblRippleUnit.setFont(f);
    lblRippleUnit.setText("dB");
    flowLayout6.setAlignment(0);
    flowLayout7.setAlignment(0);
    btnResponse.setEnabled(false);
    btnResponse.setFont(f);
    btnResponse.setLabel("Frequency response");
    btnResponse.addActionListener(new IIRFilterDesign_btnResponse_actionAdapter(this));
    btnDesign.setFont(f);
    btnDesign.setLabel("Design");
    lblMinGain.setEnabled(false);
    lblMinGain.setFont(f);
    lblMinGain.setText("Minimum plot gain:");
    lblMinGainUnit.setEnabled(false);
    lblMinGainUnit.setFont(f);
    lblMinGainUnit.setText("dB");
    btnPoleZero.setLabel("Poles/Zeros");
    btnPoleZero.setEnabled(false);
    btnPoleZero.setFont(f);
    btnPoleZero.addActionListener(new IIRFilterDesign_btnPoleZero_actionAdapter(this));
    chMinGain.addItem("-10");
    chMinGain.addItem("-50");
    chMinGain.addItem("-100");
    chMinGain.addItem("-200");
    chMinGain.select("-100");
    chMinGain.addItemListener(new IIRFilterDesign_chMinGain_itemAdapter(this));
    chMinGain.setEnabled(false);
    chMinGain.setFont(f);
    btnDesign.addActionListener(new IIRFilterDesign_btnDesign_actionAdapter(this));
    pnlButtons1.setLayout(flowLayout7);
    pnlMinGain.setLayout(flowLayout6);
    pnlRipple.setLayout(flowLayout5);
    pnlPassband.setLayout(flowLayout4);
    pnlOrder.setLayout(flowLayout3);
    pnlPrototype.setLayout(flowLayout2);
    pnlFilterType.setLayout(flowLayout1);
    pnlRightPanel.setLayout(gridLayout3);
    gridLayout2.setRows(4);
    pnlLeftPanel.setLayout(gridLayout2);
    pnlControls.setLayout(gridLayout1);
    this.setLayout(borderLayout1);
    // Gain frequency response plot
    this.add(pnlDisplay, BorderLayout.CENTER);
    this.add(pnlControls, BorderLayout.SOUTH);
    pnlControls.add(pnlLeftPanel, null);
    pnlLeftPanel.add(pnlFilterType, null);
    pnlFilterType.add(lblFilterType, null);
    pnlFilterType.add(cbLowPass, null);
    pnlFilterType.add(cbBandPass, null);
    pnlFilterType.add(cbHighPass, null);
    pnlLeftPanel.add(pnlPrototype, null);
    pnlPrototype.add(lblPrototype, null);
    pnlPrototype.add(cbButterworth, null);
    pnlPrototype.add(cbChebyshev, null);
    pnlLeftPanel.add(pnlOrder, null);
    pnlOrder.add(lblOrder, null);
    pnlOrder.add(tfOrder, null);
    pnlOrder.add(lblMaxOrder, null);
    pnlLeftPanel.add(pnlPassband, null);
    pnlPassband.add(lblPassband, null);
    pnlPassband.add(tfFreq1, null);
    pnlPassband.add(lblTo, null);
    pnlPassband.add(tfFreq2, null);
    pnlPassband.add(lblHz, null);
    pnlControls.add(pnlRightPanel, null);
    pnlRightPanel.add(pnlRipple, null);
    pnlRipple.add(lblRipple, null);
    pnlRipple.add(tfRipple, null);
    pnlRipple.add(lblRippleUnit, null);
    pnlRightPanel.add(pnlMinGain, null);
    pnlMinGain.add(lblMinGain, null);
    pnlMinGain.add(chMinGain, null);
    pnlMinGain.add(lblMinGainUnit, null);
    pnlRightPanel.add(pnlButtons1, null);
    pnlButtons1.add(btnDesign, null);
    pnlButtons1.add(btnPoleZero, null);
    pnlRightPanel.add(pnlButtons2, null);
    pnlButtons2.add(btnResponse, null);
    pnlButtons2.add(btnCoeffs, null);
    setTitle("IIRFilterDedign");
    addWindowListener(new WindowAdapter()
    {
      public void windowClosing(WindowEvent e)
      {
        System.exit(0);
      }
    });
    setVisible(true);
  }

  //Get Applet information
//  public String getAppletInfo() {
//    return "(C) 1998 Dr Iain A Robin\nIIR filter design code based on a Pascal program\n"
//           + "listed in 'Digital Signal Processing with Computer Applications'\n"
//           + "by P. Lynn and W. Fuerst (Prentice Hall)";
//  }

  //Get parameter info
  public String[][] getParameterInfo() {
    return null;
  }

  private void setRippleState(boolean b) {
    lblRipple.setEnabled(b);
    tfRipple.setEnabled(b);
    lblRippleUnit.setEnabled(b);
  }

  private void setMinGainState(boolean b) {
    lblMinGain.setEnabled(b);
    chMinGain.setEnabled(b);
    lblMinGainUnit.setEnabled(b);
  }

  void cbChebyshev_itemStateChanged(ItemEvent e) {
    setRippleState(cbChebyshev.getState());
    btnResponse.setEnabled(false);
    btnPoleZero.setEnabled(false);
    btnPoleZero.setEnabled(false);
  }

  void cbButterworth_itemStateChanged(ItemEvent e) {
    setRippleState(cbChebyshev.getState());
    btnResponse.setEnabled(false);
    btnPoleZero.setEnabled(false);
    btnPoleZero.setEnabled(false);
  }

  void designFilter() {
    order = Integer.parseInt(tfOrder.getText());
    if (order > maxOrder) {
      System.out.println("Filter order too high (max. "
                   + String.valueOf(maxOrder) + ")");
    }
    else {
      filterType = cbgFilterType.getSelectedCheckbox().getLabel();
      if ((filterType.equals("BP")) && ((order % 2) != 0)) {
        System.out.println("Filter order must be even for BP filter");
      }
      else {
        filter.setFilterType(filterType);
        prototype = cbgPrototype.getSelectedCheckbox().getLabel();
        filter.setPrototype(prototype);
        filter.setRate(rate);
        filter.setOrder(order);
        filter.setFreq1(Float.valueOf(tfFreq1.getText()).floatValue());
        filter.setFreq2(Float.valueOf(tfFreq2.getText()).floatValue());
        if (cbChebyshev.getState())
          filter.setRipple(Float.valueOf(tfRipple.getText()).floatValue());
        filter.design();
        btnResponse.setEnabled(true);
        btnPoleZero.setEnabled(true);
      }
    }
  }

  void btnDesign_actionPerformed(ActionEvent e) {
    designFilter();
  }

  void plotPolesAndZeros() {
    // pole and zero locations
    // NB poles and zeros have indices 1 .. order
    float[] pReal = new float[order + 1];
    float[] pImag = new float[order + 1];
    float[] z     = new float[order + 1];
    for (int i = 1; i <= order; i++) {
      pReal[i] = filter.getPReal(i);
      pImag[i] = filter.getPImag(i);
      z[i]     = filter.getZero(i);
    }
    pzPlot.setPolesAndZeros(pReal, pImag, z);
  }

  void btnPoleZero_actionPerformed(ActionEvent e) {
    setMinGainState(false);
    plotPolesAndZeros();
    cardLayout1.show(pnlDisplay, "PZPlot");
  }

  void plotResponse() {
    filter.setFreqPoints(freqPoints);
    gain = filter.filterGain();
    frPlot.setYmax(minPlotGain());
    frPlot.setPlotValues(gain);
  }

  void listCoeffs() {
    txtCoeffs.setText(prototype + " IIR filter\n\n");
    txtCoeffs.append("Filter type: " + filterType + "\n");
    txtCoeffs.append("Passband: " + tfFreq1.getText() + " - "
                                  + tfFreq2.getText() + " Hz\n");
    if (cbChebyshev.getState())
      txtCoeffs.append("Passband ripple: " + tfRipple.getText() + " dB\n");
    txtCoeffs.append("Order: " + String.valueOf(order) + "\n\n");
    txtCoeffs.append("Coefficients\n\n");
    for (int i = 0; i <= order; i++)
      txtCoeffs.append("a[" + String.valueOf(i) + "] = "
                         + String.valueOf(filter.getACoeff(i))
                         + "     \tb[" + String.valueOf(i) + "] = "
                         + String.valueOf(filter.getBCoeff(i)) + "\n");
    cardLayout1.show(pnlDisplay, "Coeffs");
    System.out.println(prototype + " IIR filter, sampling rate "+rate+" Hz, scale to suit");
    System.out.println("Filter type: " + filterType);
    System.out.println("Passband: " + tfFreq1.getText() + " - "
                                  + tfFreq2.getText() + " Hz");
    if (cbChebyshev.getState())
      System.out.println("Passband ripple: " + tfRipple.getText() + " dB");
    System.out.println("Order: " + String.valueOf(order));
    System.out.println("Coefficients");
    for (int i = 0; i <= order; i++)
      System.out.println("a[" + String.valueOf(i) + "] = "
                         + String.valueOf(filter.getACoeff(i))
                         + "     \tb[" + String.valueOf(i) + "] = "
                         + String.valueOf(filter.getBCoeff(i)));
  }

  void btnResponse_actionPerformed(ActionEvent e) {
    setMinGainState(true);
    plotResponse();
    btnCoeffs.setEnabled(true);
    cardLayout1.show(pnlDisplay, "FRPlot");
  }

  void btnCoeffs_actionPerformed(ActionEvent e) {
    listCoeffs();
  }

  void cbLowPass_itemStateChanged(ItemEvent e) {
    if (cbLowPass.getState()) {
      tfFreq1.setText("0");
      tfFreq2.setText("");
      tfFreq1.setEditable(false);
      tfFreq2.setEditable(true);
      btnResponse.setEnabled(false);
      btnPoleZero.setEnabled(false);
      btnCoeffs.setEnabled(false);
    }
  }

  void cbBandPass_itemStateChanged(ItemEvent e) {
    if (cbBandPass.getState()) {
      tfFreq1.setText("");
      tfFreq2.setText("");
      tfFreq1.setEditable(true);
      tfFreq2.setEditable(true);
      btnResponse.setEnabled(false);
      btnPoleZero.setEnabled(false);
      btnCoeffs.setEnabled(false);
    }
  }

  void cbHighPass_itemStateChanged(ItemEvent e) {
    if (cbHighPass.getState()) {
      tfFreq1.setText("");
      tfFreq2.setText(String.valueOf(Math.round(rate/2)).toString());
      tfFreq1.setEditable(true);
      tfFreq2.setEditable(false);
      btnResponse.setEnabled(false);
      btnPoleZero.setEnabled(false);
      btnCoeffs.setEnabled(false);
    }
  }

  private float minPlotGain() {
    return Math.abs(Float.valueOf(chMinGain.getSelectedItem()).floatValue());
  }

  void chMinGain_itemStateChanged(ItemEvent e) {
    if (btnResponse.isEnabled()) {
      plotResponse();
    }
  }

  void tfFreq1_textValueChanged(TextEvent e) {
    btnResponse.setEnabled(false);
    btnPoleZero.setEnabled(false);
    btnCoeffs.setEnabled(false);
  }

  void tfFreq2_textValueChanged(TextEvent e) {
    btnPoleZero.setEnabled(false);
    btnResponse.setEnabled(false);
    btnCoeffs.setEnabled(false);
  }

  void tfOrder_textValueChanged(TextEvent e) {
    btnPoleZero.setEnabled(false);
    btnResponse.setEnabled(false);
    btnCoeffs.setEnabled(false);
  }

  void tfRipple_textValueChanged(TextEvent e) {
    btnPoleZero.setEnabled(false);
    btnResponse.setEnabled(false);
    btnCoeffs.setEnabled(false);
  }

  public static void main (String[] args)
  {
    new IIRFilterDesign();
  }

}

/* ----- end of IIRFilterDesign class ------ */

class IIRFilterDesign_cbChebyshev_itemAdapter implements java.awt.event.ItemListener{
  IIRFilterDesign adaptee;

  IIRFilterDesign_cbChebyshev_itemAdapter(IIRFilterDesign adaptee) {
    this.adaptee = adaptee;
  }

  public void itemStateChanged(ItemEvent e) {
    adaptee.cbChebyshev_itemStateChanged(e);
  }
}

class IIRFilterDesign_cbButterworth_itemAdapter implements java.awt.event.ItemListener {
  IIRFilterDesign adaptee;

  IIRFilterDesign_cbButterworth_itemAdapter(IIRFilterDesign adaptee) {
    this.adaptee = adaptee;
  }

  public void itemStateChanged(ItemEvent e) {
    adaptee.cbButterworth_itemStateChanged(e);
  }
}

class IIRFilterDesign_btnDesign_actionAdapter implements java.awt.event.ActionListener{
  IIRFilterDesign adaptee;

  IIRFilterDesign_btnDesign_actionAdapter(IIRFilterDesign adaptee) {
    this.adaptee = adaptee;
  }

  public void actionPerformed(ActionEvent e) {
    adaptee.btnDesign_actionPerformed(e);
  }
}

class IIRFilterDesign_btnResponse_actionAdapter implements java.awt.event.ActionListener{
  IIRFilterDesign adaptee;

  IIRFilterDesign_btnResponse_actionAdapter(IIRFilterDesign adaptee) {
    this.adaptee = adaptee;
  }

  public void actionPerformed(ActionEvent e) {
    adaptee.btnResponse_actionPerformed(e);
  }
}

class IIRFilterDesign_cbLowPass_itemAdapter implements java.awt.event.ItemListener {
  IIRFilterDesign adaptee;

  IIRFilterDesign_cbLowPass_itemAdapter(IIRFilterDesign adaptee) {
    this.adaptee = adaptee;
  }

  public void itemStateChanged(ItemEvent e) {
    adaptee.cbLowPass_itemStateChanged(e);
  }
}

class IIRFilterDesign_cbBandPass_itemAdapter implements java.awt.event.ItemListener {
  IIRFilterDesign adaptee;

  IIRFilterDesign_cbBandPass_itemAdapter(IIRFilterDesign adaptee) {
    this.adaptee = adaptee;
  }

  public void itemStateChanged(ItemEvent e) {
    adaptee.cbBandPass_itemStateChanged(e);
  }
}

class IIRFilterDesign_cbHighPass_itemAdapter implements java.awt.event.ItemListener {
  IIRFilterDesign adaptee;

  IIRFilterDesign_cbHighPass_itemAdapter(IIRFilterDesign adaptee) {
    this.adaptee = adaptee;
  }

  public void itemStateChanged(ItemEvent e) {
    adaptee.cbHighPass_itemStateChanged(e);
  }
}

class IIRFilterDesign_chMinGain_itemAdapter implements java.awt.event.ItemListener {
  IIRFilterDesign adaptee;

  IIRFilterDesign_chMinGain_itemAdapter(IIRFilterDesign adaptee) {
    this.adaptee = adaptee;
  }

  public void itemStateChanged(ItemEvent e) {
    adaptee.chMinGain_itemStateChanged(e);
  }
}

class IIRFilterDesign_tfFreq1_textAdapter implements java.awt.event.TextListener {
  IIRFilterDesign adaptee;

  IIRFilterDesign_tfFreq1_textAdapter(IIRFilterDesign adaptee) {
    this.adaptee = adaptee;
  }

  public void textValueChanged(TextEvent e) {
    adaptee.tfFreq1_textValueChanged(e);
  }
}

class IIRFilterDesign_tfFreq2_textAdapter implements java.awt.event.TextListener {
  IIRFilterDesign adaptee;

  IIRFilterDesign_tfFreq2_textAdapter(IIRFilterDesign adaptee) {
    this.adaptee = adaptee;
  }

  public void textValueChanged(TextEvent e) {
    adaptee.tfFreq2_textValueChanged(e);
  }
}

class IIRFilterDesign_tfOrder_textAdapter implements java.awt.event.TextListener{
  IIRFilterDesign adaptee;

  IIRFilterDesign_tfOrder_textAdapter(IIRFilterDesign adaptee) {
    this.adaptee = adaptee;
  }

  public void textValueChanged(TextEvent e) {
    adaptee.tfOrder_textValueChanged(e);
  }
}

class IIRFilterDesign_tfRipple_textAdapter implements java.awt.event.TextListener {
  IIRFilterDesign adaptee;

  IIRFilterDesign_tfRipple_textAdapter(IIRFilterDesign adaptee) {
    this.adaptee = adaptee;
  }

  public void textValueChanged(TextEvent e) {
    adaptee.tfRipple_textValueChanged(e);
  }
}

class IIRFilterDesign_btnPoleZero_actionAdapter implements java.awt.event.ActionListener {
  IIRFilterDesign adaptee;

  IIRFilterDesign_btnPoleZero_actionAdapter(IIRFilterDesign adaptee) {
    this.adaptee = adaptee;
  }

  public void actionPerformed(ActionEvent e) {
    adaptee.btnPoleZero_actionPerformed(e);
  }
}

class IIRFilterDesign_btnCoeffs_actionAdapter implements java.awt.event.ActionListener{
  IIRFilterDesign adaptee;

  IIRFilterDesign_btnCoeffs_actionAdapter(IIRFilterDesign adaptee) {
    this.adaptee = adaptee;
  }

  public void actionPerformed(ActionEvent e) {
    adaptee.btnCoeffs_actionPerformed(e);
  }
}

// end IIRFilterDesign.java