src/tim/prune/function/compress/SingleParameterAlgorithm.java

   1 package tim.prune.function.compress;
   2
   3 import java.awt.Component;
   4 import java.awt.GridLayout;
   5 import java.awt.event.ActionListener;
   6 import java.awt.event.KeyListener;
   7
   8 import javax.swing.JLabel;
   9 import javax.swing.JPanel;
  10 import javax.swing.JTextField;
  11 import javax.swing.SwingConstants;
  12
  13 import tim.prune.I18nManager;
  14 import tim.prune.data.Track;
  15
  16 /**
  17  * Superclass for compression algorithms with a single text field parameter
  18  */
  19 public abstract class SingleParameterAlgorithm extends CompressionAlgorithm
  20 {
  21         /** Text field for entering parameter */
  22         private JTextField _parameterField = null;
  23         /** Listener from parent dialog */
  24         private ActionListener _listener = null;
  25
  26
  27         /**
  28          * Constructor
  29          * @param inTrack track object
  30          * @param inDetails track details object
  31          * @param inListener listener to attach to activation control
  32          */
  33         public SingleParameterAlgorithm(Track inTrack, TrackDetails inDetails, ActionListener inListener)
  34         {
  35                 super(inTrack, inDetails, inListener);
  36                 _listener = inListener;
  37                 _parameterField = new JTextField();
  38                 // Add listener to parameter field to re-run preview (and en/disable ok) when param changed
  39                 _parameterField.addKeyListener(new KeyListener() {
  40                         public void keyTyped(java.awt.event.KeyEvent arg0) {}
  41                         public void keyPressed(java.awt.event.KeyEvent arg0) {}
  42                         public void keyReleased(java.awt.event.KeyEvent arg0) {if (isActivated()) _listener.actionPerformed(null);}
  43                 });
  44         }
  45
  46         /**
  47          * @return specific gui components for dialog
  48          * @param inLabelKey key for label
  49          * @param inParamValue initial value of parameter
  50          */
  51         protected Component getSpecificGuiComponents(String inLabelKey, String inParamValue)
  52         {
  53                 // Create panel with label and text field
  54                 JPanel panel = new JPanel();
  55                 panel.setLayout(new GridLayout(0, 2));
  56                 JLabel label = new JLabel(I18nManager.getText(inLabelKey) + " : ");
  57                 label.setHorizontalAlignment(SwingConstants.RIGHT);
  58                 panel.add(label);
  59                 panel.add(_parameterField);
  60                 _parameterField.setText(inParamValue);
  61                 return panel;
  62         }
  63
  64         /**
  65          * Parse the text field to get parameter
  66          * @return parameter given as double
  67          */
  68         protected double getParameter()
  69         {
  70                 double param = 0.0;
  71                 try {
  72                         // Parse from string
  73                         param = Double.parseDouble(_parameterField.getText());
  74                 }
  75                 catch (NumberFormatException nfe) {} // ignore, param stays zero
  76                 return param;
  77         }
  78
  79         /**
  80          * @return the text field component
  81          */
  82         protected JTextField getTextField()
  83         {
  84                 return _parameterField;
  85         }
  86 }