Examples of javax.swing.JTextField$TextFieldActionPropertyChangeListener

javax.swing.JTextField
oracle.com/javase/tutorial/uiswing/components/textfield.html">How to Use Text Fields in The Java Tutorial.
JTextField is intended to be source-compatible with java.awt.TextField where it is reasonable to do so. This component has capabilities not found in the java.awt.TextField class. The superclass should be consulted for additional capabilities.
JTextField has a method to establish the string used as the command string for the action event that gets fired. The java.awt.TextField used the text of the field as the command string for the ActionEvent. JTextField will use the command string set with the setActionCommand method if not null, otherwise it will use the text of the field as a compatibility with java.awt.TextField.
The method setEchoChar and getEchoChar are not provided directly to avoid a new implementation of a pluggable look-and-feel inadvertently exposing password characters. To provide password-like services a separate class JPasswordField extends JTextField to provide this service with an independently pluggable look-and-feel.
The java.awt.TextField could be monitored for changes by adding a TextListener for TextEvent's. In the JTextComponent based components, changes are broadcasted from the model via a DocumentEvent to DocumentListeners. The DocumentEvent gives the location of the change and the kind of change if desired. The code fragment might look something like:
```
     DocumentListener myListener = ??;     JTextField myArea = ??;     myArea.getDocument().addDocumentListener(myListener); 
```
The horizontal alignment of JTextField can be set to be left justified, leading justified, centered, right justified or trailing justified. Right/trailing justification is useful if the required size of the field text is smaller than the size allocated to it. This is determined by the setHorizontalAlignment and getHorizontalAlignment methods. The default is to be leading justified.
How the text field consumes VK_ENTER events depends on whether the text field has any action listeners. If so, then VK_ENTER results in the listeners getting an ActionEvent, and the VK_ENTER event is consumed. This is compatible with how AWT text fields handle VK_ENTER events. If the text field has no action listeners, then as of v 1.3 the VK_ENTER event is not consumed. Instead, the bindings of ancestor components are processed, which enables the default button feature of JFC/Swing to work.
Customized fields can easily be created by extending the model and changing the default model provided. For example, the following piece of code will create a field that holds only upper case characters. It will work even if text is pasted into from the clipboard or it is altered via programmatic changes.
```
  public class UpperCaseField extends JTextField {        public UpperCaseField(int cols) {          super(cols);      }        protected Document createDefaultModel() {          return new UpperCaseDocument();      }        static class UpperCaseDocument extends PlainDocument {            public void insertString(int offs, String str, AttributeSet a)              throws BadLocationException {                if (str == null) {                  return;              }              char[] upper = str.toCharArray();              for (int i = 0; i < upper.length; i++) {                  upper[i] = Character.toUpperCase(upper[i]);              }              super.insertString(offs, new String(upper), a);          }      }  } 
```
Warning: Swing is not thread safe. For more information see Swing's Threading Policy.
Warning: Serialized objects of this class will not be compatible with future Swing releases. The current serialization support is appropriate for short term storage or RMI between applications running the same version of Swing. As of 1.4, support for long term storage of all JavaBeans™ has been added to the java.beans package. Please see {@link java.beans.XMLEncoder}. @beaninfo attribute: isContainer false description: A component which allows for the editing of a single line of text. @author Timothy Prinzing @see #setActionCommand @see JPasswordField @see #addActionListener

            table.setColumnCount(5);
            TableColumn columnHidden = table.getColumnModel().getColumn(3);
            table.removeColumn(columnHidden);


            TableColumn columnField = table.getColumnModel().getColumn(0);
            JTextField textField = ComponentFactory.getTextFieldDisabled();
            columnField.setCellEditor(new DefaultCellEditor(textField));
            columnField.setHeaderValue(DcResources.getText("lblLabel"));


            TableColumn columnEnabled = table.getColumnModel().getColumn(1);
            JCheckBox checkEnabled = new JCheckBox();

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                ,GridBagConstraints.NORTHWEST, GridBagConstraints.HORIZONTAL,
                 new Insets(5, 5, 5, 5), 0, 0));


        tableDirectoriesAsDrives.setColumnCount(1);
        TableColumn columnDir = tableDirectoriesAsDrives.getColumnModel().getColumn(0);
        JTextField textField = ComponentFactory.getTextFieldDisabled();
        columnDir.setCellEditor(new DefaultCellEditor(textField));
        columnDir.setHeaderValue(DcResources.getText("lblDirectory"));
        
        JPanel panelActions = new JPanel();

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        scrollerSysFields.setVerticalScrollBarPolicy(JScrollPane.VERTICAL_SCROLLBAR_ALWAYS);
        scrollerSysFields.getViewport().setScrollMode(JViewport.SIMPLE_SCROLL_MODE);
        
        table.setColumnCount(3);
        TableColumn colField = table.getColumnModel().getColumn(0);
        JTextField textField = ComponentFactory.getTextFieldDisabled();
        colField.setCellEditor(new DefaultCellEditor(textField));
        colField.setHeaderValue(DcResources.getText("lblName"));


        TableColumn colCanRemove = table.getColumnModel().getColumn(1);

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    }
    
    private void buildDialog() {
        getContentPane().setLayout(Layout.getGBL());
        
        JTextField txtFilter = ComponentFactory.getShortTextField(255);
        txtFilter.addKeyListener(this);


        tblAvailableItems = new DcTable(true, false);
        tblAvailableItems.setSelectionMode(ListSelectionModel.MULTIPLE_INTERVAL_SELECTION);
        tblAvailableItems.addMouseListener(new ListMouseListener(ListMouseListener._RIGHT));

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        panelExludeDirs.setLayout(Layout.getGBL());


        tableSkipDirs = ComponentFactory.getDCTable(true, false);
        tableSkipDirs.setColumnCount(1);
        TableColumn columnDir = tableSkipDirs.getColumnModel().getColumn(0);
        JTextField textField = ComponentFactory.getTextFieldDisabled();
        columnDir.setCellEditor(new DefaultCellEditor(textField));
        columnDir.setHeaderValue(DcResources.getText("lblDirectory"));
        
        JPanel panelActions = new JPanel();
        buttonAdd = ComponentFactory.getButton(DcResources.getText("lblAdd"));

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        public JPanel getGUI() {
            // request focus
            requestFocus();


            JTextField tf;
            JPanel pal;
            final JPanel pop;
            pop = PaletteHelper.createVerticalPanel(null);


            // add arrowheads
            if (!(this instanceof Rect))
                makeArrowHeadGUI(pop);


            if (rt == OMGraphic.RENDERTYPE_LATLON) {
                pal = PaletteHelper.createVerticalPanel(null);
                JComboBox jcb = new JComboBox();
                jcb.addItem("Straight");// indices correspond to
                                        // LineType.java
                jcb.addItem("Rhumb");
                jcb.addItem("Great Circle");
                jcb.setSelectedIndex(type - 1);
                jcb.addActionListener(new ActionListener() {
                    public void actionPerformed(ActionEvent e) {
                        setType((JComboBox) e.getSource());
                    }
                });
                pal.add(jcb);
                pop.add(pal);
                tf = PaletteHelper.createTextEntry("nsegs", "" + nsegs, pop);
                tf.addFocusListener(new FocusAdapter() {
                    public void focusLost(FocusEvent e) {
                        setSegs((JTextField) e.getSource());
                    }
                });
            }
            if (rt != OMGraphic.RENDERTYPE_XY) {
                tf = PaletteHelper.createTextEntry("lat1", "" + llpts[0], pop);
                tf.addFocusListener(new FocusAdapter() {
                    public void focusLost(FocusEvent e) {
                        setLLCoordinate((JTextField) e.getSource(), 0);
                    }
                });
                tf = PaletteHelper.createTextEntry("lon1", "" + llpts[1], pop);
                tf.addFocusListener(new FocusAdapter() {
                    public void focusLost(FocusEvent e) {
                        setLLCoordinate((JTextField) e.getSource(), 1);
                    }
                });
            }


            if (rt == OMGraphic.RENDERTYPE_LATLON) {
                tf = PaletteHelper.createTextEntry("lat2", "" + llpts[2], pop);
                tf.addFocusListener(new FocusAdapter() {
                    public void focusLost(FocusEvent e) {
                        setLLCoordinate((JTextField) e.getSource(), 2);
                    }
                });
                tf = PaletteHelper.createTextEntry("lon2", "" + llpts[3], pop);
                tf.addFocusListener(new FocusAdapter() {
                    public void focusLost(FocusEvent e) {
                        setLLCoordinate((JTextField) e.getSource(), 3);
                    }
                });
            } else {
                tf = PaletteHelper.createTextEntry("x1", "" + xypts[0], pop);
                tf.addFocusListener(new FocusAdapter() {
                    public void focusLost(FocusEvent e) {
                        setXYCoordinate((JTextField) e.getSource(), 0);
                    }
                });
                tf = PaletteHelper.createTextEntry("y1", "" + xypts[1], pop);
                tf.addFocusListener(new FocusAdapter() {
                    public void focusLost(FocusEvent e) {
                        setXYCoordinate((JTextField) e.getSource(), 1);
                    }
                });
                tf = PaletteHelper.createTextEntry("x2", "" + xypts[2], pop);
                tf.addFocusListener(new FocusAdapter() {
                    public void focusLost(FocusEvent e) {
                        setXYCoordinate((JTextField) e.getSource(), 2);
                    }
                });
                tf = PaletteHelper.createTextEntry("y2", "" + xypts[3], pop);
                tf.addFocusListener(new FocusAdapter() {
                    public void focusLost(FocusEvent e) {
                        setXYCoordinate((JTextField) e.getSource(), 3);
                    }
                });
            }

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        public JPanel getGUI() {
            // request focus
            requestFocus();


            final JPanel pop;
            JTextField tf;
            pop = PaletteHelper.createVerticalPanel(null);


            if (rt != OMGraphic.RENDERTYPE_XY) {
                tf = PaletteHelper.createTextEntry("lat", "" + llpts[0], pop);
                tf.addFocusListener(new FocusAdapter() {
                    public void focusLost(FocusEvent e) {
                        setLLCoordinate((JTextField) e.getSource(), 0);
                    }
                });
                tf = PaletteHelper.createTextEntry("lon", "" + llpts[1], pop);
                tf.addFocusListener(new FocusAdapter() {
                    public void focusLost(FocusEvent e) {
                        setLLCoordinate((JTextField) e.getSource(), 1);
                    }
                });
            } else {
                tf = PaletteHelper.createTextEntry("x", "" + xypts[0], pop);
                tf.addFocusListener(new FocusAdapter() {
                    public void focusLost(FocusEvent e) {
                        setXYCoordinate((JTextField) e.getSource(), 0);
                    }
                });
                tf = PaletteHelper.createTextEntry("y", "" + xypts[1], pop);
                tf.addFocusListener(new FocusAdapter() {
                    public void focusLost(FocusEvent e) {
                        setXYCoordinate((JTextField) e.getSource(), 1);
                    }
                });
            }


            if (rt == OMGraphic.RENDERTYPE_OFFSET) {
                tf = PaletteHelper.createTextEntry("off_x", "" + xypts[0], pop);
                tf.addFocusListener(new FocusAdapter() {
                    public void focusLost(FocusEvent e) {
                        setXYCoordinate((JTextField) e.getSource(), 0);
                    }
                });
                tf = PaletteHelper.createTextEntry("off_y", "" + xypts[1], pop);
                tf.addFocusListener(new FocusAdapter() {
                    public void focusLost(FocusEvent e) {
                        setXYCoordinate((JTextField) e.getSource(), 1);
                    }
                });
            } else if (rt == OMGraphic.RENDERTYPE_LATLON) {
                tf = PaletteHelper.createTextEntry("R (km)", "" + radius, pop);
                tf.addFocusListener(new FocusAdapter() {
                    public void focusLost(FocusEvent e) {
                        JTextField jtf = (JTextField) e.getSource();
                        float f = radius;
                        try {
                            f = Float.valueOf(jtf.getText().trim())
                                    .floatValue();
                        } catch (NumberFormatException ex) {
                            return;
                        }
                        radius = f;
                        System.out.println("TestLayer: radius=" + radius);
                    }
                });
                tf = PaletteHelper.createTextEntry("nverts", "" + nsegs, pop);
                tf.addFocusListener(new FocusAdapter() {
                    public void focusLost(FocusEvent e) {
                        setSegs((JTextField) e.getSource());
                    }
                });
            }


            if (rt != OMGraphic.RENDERTYPE_LATLON) {
                tf = PaletteHelper.createTextEntry("width", "" + width, pop);
                tf.addFocusListener(new FocusAdapter() {
                    public void focusLost(FocusEvent e) {
                        JTextField jtf = (JTextField) e.getSource();
                        try {
                            width = Integer.parseInt(jtf.getText().trim());
                        } catch (NumberFormatException ex) {
                            return;
                        }
                    }
                });
                tf = PaletteHelper.createTextEntry("height", "" + height, pop);
                tf.addFocusListener(new FocusAdapter() {
                    public void focusLost(FocusEvent e) {
                        JTextField jtf = (JTextField) e.getSource();
                        try {
                            height = Integer.parseInt(jtf.getText().trim());
                        } catch (NumberFormatException ex) {
                            return;
                        }
                    }
                });

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            // request focus
            requestFocus();


            final JPanel pop;
            JPanel pal;
            JTextField tf;
            JTextArea ta;
            pop = PaletteHelper.createVerticalPanel(null);


            if (rt == OMGraphic.RENDERTYPE_LATLON) {
                pal = PaletteHelper.createVerticalPanel(null);
                JComboBox jcb = new JComboBox();
                jcb.addItem("Straight");// indices correspond to
                                        // LineType.java
                jcb.addItem("Rhumb");
                jcb.addItem("Great Circle");
                jcb.setSelectedIndex(type - 1);
                jcb.addActionListener(new ActionListener() {
                    public void actionPerformed(ActionEvent e) {
                        setType((JComboBox) e.getSource());
                    }
                });
                pal.add(jcb);
                pop.add(pal);
                tf = PaletteHelper.createTextEntry("nsegs", "" + nsegs, pop);
                tf.addFocusListener(new FocusAdapter() {
                    public void focusLost(FocusEvent e) {
                        setSegs((JTextField) e.getSource());
                    }
                });
                String entry = "";
                for (int i = 0; i < llpts.length; i += 2) {
                    entry = entry + llpts[i] + " " + llpts[i + 1] + "\n";
                }
                ta = PaletteHelper.createTextArea("llpts", entry, pop, 5, 8);
                ta.addFocusListener(new FocusAdapter() {
                    public void focusLost(FocusEvent e) {
                        setLL((JTextArea) e.getSource());
                    }
                });
            } else {
                if (rt == OMGraphic.RENDERTYPE_OFFSET) {
                    tf = PaletteHelper.createTextEntry("lat",
                            "" + llpts[0],
                            pop);
                    tf.addFocusListener(new FocusAdapter() {
                        public void focusLost(FocusEvent e) {
                            setLLCoordinate((JTextField) e.getSource(), 0);
                        }
                    });
                    tf = PaletteHelper.createTextEntry("lon",
                            "" + llpts[1],
                            pop);
                    tf.addFocusListener(new FocusAdapter() {
                        public void focusLost(FocusEvent e) {
                            setLLCoordinate((JTextField) e.getSource(), 1);
                        }
                    });
                }

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            // request focus
            requestFocus();


            final JPanel pop;
            JPanel pal;
            JTextField tf;
            final JComboBox jcb;
            pop = PaletteHelper.createVerticalPanel(null);


            tf = PaletteHelper.createTextEntry("text", data, pop);
            tf.addFocusListener(new FocusAdapter() {
                public void focusLost(FocusEvent e) {
                    data = ((JTextField) (e.getSource())).getText().trim();
                }
            });


            tf = PaletteHelper.createTextEntry("font", font, pop);
            tf.addFocusListener(new FocusAdapter() {
                public void focusLost(FocusEvent e) {
                    font = ((JTextField) (e.getSource())).getText().trim();
                }
            });


            pal = PaletteHelper.createVerticalPanel(null);
            jcb = new JComboBox();
            jcb.addItem("right");// indices correspond to values in
                                 // OMText
            jcb.addItem("center");
            jcb.addItem("left");
            jcb.setSelectedIndex(just);
            jcb.addActionListener(new ActionListener() {
                public void actionPerformed(ActionEvent e) {
                    just = jcb.getSelectedIndex();
                    setList(generateGraphics());
                    repaint();
                }
            });
            pal.add(jcb);
            pop.add(pal);


            if (rt != OMGraphic.RENDERTYPE_XY) {
                tf = PaletteHelper.createTextEntry("lat", "" + llpts[0], pop);
                tf.addFocusListener(new FocusAdapter() {
                    public void focusLost(FocusEvent e) {
                        setLLCoordinate((JTextField) e.getSource(), 0);
                    }
                });
                tf = PaletteHelper.createTextEntry("lon", "" + llpts[1], pop);
                tf.addFocusListener(new FocusAdapter() {
                    public void focusLost(FocusEvent e) {
                        setLLCoordinate((JTextField) e.getSource(), 1);
                    }
                });
            }


            if (rt != OMGraphic.RENDERTYPE_LATLON) {
                tf = PaletteHelper.createTextEntry("off_x", "" + xypts[0], pop);
                tf.addFocusListener(new FocusAdapter() {
                    public void focusLost(FocusEvent e) {
                        setXYCoordinate((JTextField) e.getSource(), 0);
                    }
                });
                tf = PaletteHelper.createTextEntry("off_y", "" + xypts[1], pop);
                tf.addFocusListener(new FocusAdapter() {
                    public void focusLost(FocusEvent e) {
                        setXYCoordinate((JTextField) e.getSource(), 1);
                    }
                });
            }

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          nameList.setSelectionModel(disableSelections);
        }
        {
          JPanel bottomPanel = new JPanel(new GridBagLayout());
          panel.add(bottomPanel, BorderLayout.SOUTH);
          bottomPanel.add(sendText = new JTextField(), new GridBagConstraints(0, 0, 1, 1, 1, 0, GridBagConstraints.CENTER,
            GridBagConstraints.BOTH, new Insets(0, 0, 0, 0), 0, 0));
          bottomPanel.add(sendButton = new JButton("Send"), new GridBagConstraints(1, 0, 1, 1, 0, 0,
            GridBagConstraints.CENTER, 0, new Insets(0, 0, 0, 0), 0, 0));
        }
      }

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