Example usage for javax.swing JTextField addFocusListener

Introduction

In this page you can find the example usage for javax.swing JTextField addFocusListener.

Prototype

public synchronized void addFocusListener(FocusListener l) 

Source Link

Document

Adds the specified focus listener to receive focus events from this component when this component gains input focus.

Usage

From source file:Main.java

public static void main(String... args) {
    JFrame frame = new JFrame();
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

    JPanel contentPane = new JPanel();
    contentPane.setLayout(new FlowLayout(FlowLayout.LEFT, 5, 5));
    JTextField tfield1 = new JTextField(10);
    JTextField tfield2 = new JTextField(10);

    FocusListener tfieldListener = new FocusListener() {
        @Override// w ww  . j a v a 2 s  . com
        public void focusGained(FocusEvent fe) {
        }

        @Override
        public void focusLost(FocusEvent fe) {
            String num1 = tfield1.getText().trim();
            String num2 = tfield2.getText().trim();
            if (num1 == null || num1.equals(""))
                num1 = "0";
            if (num2 == null || num2.equals(""))
                num2 = "0";
            System.out.println(Integer.toString(Integer.parseInt(num1) + Integer.parseInt(num2)));
        }
    };

    tfield1.addFocusListener(tfieldListener);
    tfield2.addFocusListener(tfieldListener);

    ((AbstractDocument) tfield1.getDocument()).setDocumentFilter(new MyDocumentFilter());
    ((AbstractDocument) tfield2.getDocument()).setDocumentFilter(new MyDocumentFilter());

    contentPane.add(tfield1);
    contentPane.add(tfield2);

    frame.setContentPane(contentPane);
    frame.pack();
    frame.setLocationByPlatform(true);
    frame.setVisible(true);
}

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From source file:Main.java

public static void addPlaceHolder(final JTextField field, final String placeHolderText) {
    field.addFocusListener(new FocusListener() {
        private Color fontColor = field.getForeground();

        //          private String previousText=field.getText();

        public void focusGained(FocusEvent arg0) {
            if (field.getText().equals(placeHolderText)) {
                field.setText("");
            }/*w ww.j av  a2  s. c  o  m*/
            field.setForeground(fontColor);
        }

        public void focusLost(FocusEvent arg0) {
            if (field.getText().trim().equals("")) {
                fontColor = field.getForeground();
                field.setForeground(Color.GRAY);
                field.setText(placeHolderText);
            }
        }
    });
    if (field.getText().trim().equals("")) {
        field.setText(placeHolderText);
        field.setForeground(Color.GRAY);
    }
}

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From source file:Main.java

public Main() {
    JTextField textField = new JTextField("A TextField");
    textField.addFocusListener(this);
    JLabel label = new JLabel("A Label");
    label.addFocusListener(this);
    add(label);//from w w w.j  a  va 2  s. c o m

    String comboPrefix = "Item #";
    final int numItems = 15;
    Vector vector = new Vector(numItems);
    for (int i = 0; i < numItems; i++) {
        vector.addElement(comboPrefix + i);
    }
    JComboBox comboBox = new JComboBox(vector);
    comboBox.addFocusListener(this);
    add(comboBox);

    JButton button = new JButton("A Button");
    button.addFocusListener(this);
    add(button);

    JList list = new JList(vector);
    list.setSelectedIndex(1);
    list.addFocusListener(this);
    JScrollPane listScrollPane = new JScrollPane(list);

    listScrollPane.getVerticalScrollBar().setFocusable(false);
    listScrollPane.getHorizontalScrollBar().setFocusable(false);
    add(listScrollPane);

    setPreferredSize(new Dimension(450, 450));
}

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From source file:Main.java

public Main() {
    JTextField textField = new JTextField("A TextField");
    textField.addFocusListener(this);
    JLabel label = new JLabel("A Label");
    label.addFocusListener(this);
    add(label);//from ww  w. j ava2 s .  co  m

    String comboPrefix = "ComboBox Item #";
    final int numItems = 15;
    Vector vector = new Vector(numItems);
    for (int i = 0; i < numItems; i++) {
        vector.addElement(comboPrefix + i);
    }
    JComboBox comboBox = new JComboBox(vector);
    comboBox.addFocusListener(this);
    add(comboBox);

    JButton button = new JButton("A Button");
    button.addFocusListener(this);
    add(button);

    String listPrefix = "List Item #";
    Vector listVector = new Vector(numItems);
    for (int i = 0; i < numItems; i++) {
        listVector.addElement(listPrefix + i);
    }
    JList list = new JList(listVector);
    list.setSelectedIndex(1);
    list.addFocusListener(this);
    JScrollPane listScrollPane = new JScrollPane(list);

    listScrollPane.getVerticalScrollBar().setFocusable(false);
    listScrollPane.getHorizontalScrollBar().setFocusable(false);
    add(listScrollPane);

    setPreferredSize(new Dimension(450, 450));
    setBorder(BorderFactory.createEmptyBorder(20, 20, 20, 20));
}

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From source file:ru.codemine.pos.ui.salespanel.QuantitySetupWindow.java

public void showWindow() {
    if (!actionListenersInit)
        setupActionListeners();/* w w  w  . j a  v  a2 s . c o m*/
    mainWindow.blockBarcodeInput();

    Product product = salesPanel.getChequeSetupPanel().getSelectedProduct();
    if (product == null) {
        mainWindow.unblockBarcodeInput();
        return;
    }

    int maxQuantity = storeService.getAvaibleStocksOnRetail(product);
    onStoresLabel.setText("?: " + String.valueOf(maxQuantity) + " .");
    setTitle("? - " + product.getName());
    spinner.setModel(new SpinnerNumberModel(1, 1, maxQuantity, 1));

    JTextField ft = ((WebSpinner.DefaultEditor) spinner.getEditor()).getTextField();
    ft.addFocusListener(new FocusAdapter() {
        @Override
        public void focusGained(FocusEvent e) {
            final JTextComponent txtcomp = (JTextComponent) e.getSource();
            SwingUtilities.invokeLater(new Runnable() {
                @Override
                public void run() {
                    txtcomp.selectAll();
                }
            });
        }
    });
    ft.requestFocus();

    setVisible(true);
}

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From source file:events.FocusEventDemo.java

public void addComponentsToPane(final Container pane) {
    GridBagLayout gridbag = new GridBagLayout();
    pane.setLayout(gridbag);//from  ww  w. j a v  a2s  .com

    GridBagConstraints c = new GridBagConstraints();

    c.fill = GridBagConstraints.HORIZONTAL;
    c.weightx = 1.0; //Make column as wide as possible.
    JTextField textField = new JTextField("A TextField");
    textField.setMargin(new Insets(0, 2, 0, 2));
    textField.addFocusListener(this);
    gridbag.setConstraints(textField, c);
    add(textField);

    c.weightx = 0.1; //Widen every other column a bit, when possible.
    c.fill = GridBagConstraints.NONE;
    JLabel label = new JLabel("A Label");
    label.setBorder(BorderFactory.createEmptyBorder(0, 5, 0, 5));
    label.addFocusListener(this);
    gridbag.setConstraints(label, c);
    add(label);

    String comboPrefix = "ComboBox Item #";
    final int numItems = 15;
    Vector<String> vector = new Vector<String>(numItems);
    for (int i = 0; i < numItems; i++) {
        vector.addElement(comboPrefix + i);
    }
    JComboBox comboBox = new JComboBox(vector);
    comboBox.addFocusListener(this);
    gridbag.setConstraints(comboBox, c);
    add(comboBox);

    c.gridwidth = GridBagConstraints.REMAINDER;
    JButton button = new JButton("A Button");
    button.addFocusListener(this);
    gridbag.setConstraints(button, c);
    add(button);

    c.weightx = 0.0;
    c.weighty = 0.1;
    c.fill = GridBagConstraints.BOTH;
    String listPrefix = "List Item #";
    Vector<String> listVector = new Vector<String>(numItems);
    for (int i = 0; i < numItems; i++) {
        listVector.addElement(listPrefix + i);
    }
    JList list = new JList(listVector);
    list.setSelectedIndex(1); //It's easier to see the focus change
    //if an item is selected.
    list.addFocusListener(this);
    JScrollPane listScrollPane = new JScrollPane(list);

    gridbag.setConstraints(listScrollPane, c);
    add(listScrollPane);

    c.weighty = 1.0; //Make this row as tall as possible.
    c.gridheight = GridBagConstraints.REMAINDER;
    //Set up the area that reports focus-gained and focus-lost events.
    display = new JTextArea();
    display.setEditable(false);
    //The setRequestFocusEnabled method prevents a
    //component from being clickable, but it can still
    //get the focus through the keyboard - this ensures
    //user accessibility.
    display.setRequestFocusEnabled(false);
    display.addFocusListener(this);
    JScrollPane displayScrollPane = new JScrollPane(display);

    gridbag.setConstraints(displayScrollPane, c);
    add(displayScrollPane);
    setPreferredSize(new Dimension(450, 450));
    ((JPanel) pane).setBorder(BorderFactory.createEmptyBorder(20, 20, 20, 20));
}

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From source file:FocusEventDemo.java

public void addComponentsToPane(final Container pane) {
    GridBagLayout gridbag = new GridBagLayout();
    pane.setLayout(gridbag);/*from  w  w  w  . j av a 2 s  . c om*/

    GridBagConstraints c = new GridBagConstraints();

    c.fill = GridBagConstraints.HORIZONTAL;
    c.weightx = 1.0; // Make column as wide as possible.
    JTextField textField = new JTextField("A TextField");
    textField.setMargin(new Insets(0, 2, 0, 2));
    textField.addFocusListener(this);
    gridbag.setConstraints(textField, c);
    add(textField);

    c.weightx = 0.1; // Widen every other column a bit, when possible.
    c.fill = GridBagConstraints.NONE;
    JLabel label = new JLabel("A Label");
    label.setBorder(BorderFactory.createEmptyBorder(0, 5, 0, 5));
    label.addFocusListener(this);
    gridbag.setConstraints(label, c);
    add(label);

    String comboPrefix = "ComboBox Item #";
    final int numItems = 15;
    Vector<String> vector = new Vector<String>(numItems);
    for (int i = 0; i < numItems; i++) {
        vector.addElement(comboPrefix + i);
    }
    JComboBox comboBox = new JComboBox(vector);
    comboBox.addFocusListener(this);
    gridbag.setConstraints(comboBox, c);
    add(comboBox);

    c.gridwidth = GridBagConstraints.REMAINDER;
    JButton button = new JButton("A Button");
    button.addFocusListener(this);
    gridbag.setConstraints(button, c);
    add(button);

    c.weightx = 0.0;
    c.weighty = 0.1;
    c.fill = GridBagConstraints.BOTH;
    String listPrefix = "List Item #";
    Vector<String> listVector = new Vector<String>(numItems);
    for (int i = 0; i < numItems; i++) {
        listVector.addElement(listPrefix + i);
    }
    JList list = new JList(listVector);
    list.setSelectedIndex(1); // It's easier to see the focus change
    // if an item is selected.
    list.addFocusListener(this);
    JScrollPane listScrollPane = new JScrollPane(list);

    gridbag.setConstraints(listScrollPane, c);
    add(listScrollPane);

    c.weighty = 1.0; // Make this row as tall as possible.
    c.gridheight = GridBagConstraints.REMAINDER;
    // Set up the area that reports focus-gained and focus-lost events.
    display = new JTextArea();
    display.setEditable(false);
    // The setRequestFocusEnabled method prevents a
    // component from being clickable, but it can still
    // get the focus through the keyboard - this ensures
    // user accessibility.
    display.setRequestFocusEnabled(false);
    display.addFocusListener(this);
    JScrollPane displayScrollPane = new JScrollPane(display);

    gridbag.setConstraints(displayScrollPane, c);
    add(displayScrollPane);
    setPreferredSize(new Dimension(450, 450));
    ((JPanel) pane).setBorder(BorderFactory.createEmptyBorder(20, 20, 20, 20));
}

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From source file:FocusEventDemo.java

public FocusEventDemo() {
    super(new GridBagLayout());
    GridBagLayout gridbag = (GridBagLayout) getLayout();
    GridBagConstraints c = new GridBagConstraints();

    c.fill = GridBagConstraints.HORIZONTAL;
    c.weightx = 1.0; //Make column as wide as possible.
    JTextField textField = new JTextField("A TextField");
    textField.setMargin(new Insets(0, 2, 0, 2));
    textField.addFocusListener(this);
    gridbag.setConstraints(textField, c);
    add(textField);/*  ww w .  ja  v  a2s.c  o  m*/

    c.weightx = 0.1; //Widen every other column a bit, when possible.
    c.fill = GridBagConstraints.NONE;
    JLabel label = new JLabel("A Label");
    label.setBorder(BorderFactory.createEmptyBorder(0, 5, 0, 5));
    label.addFocusListener(this);
    gridbag.setConstraints(label, c);
    add(label);

    String comboPrefix = "ComboBox Item #";
    final int numItems = 15;
    Vector vector = new Vector(numItems);
    for (int i = 0; i < numItems; i++) {
        vector.addElement(comboPrefix + i);
    }
    JComboBox comboBox = new JComboBox(vector);
    comboBox.addFocusListener(this);
    gridbag.setConstraints(comboBox, c);
    add(comboBox);

    c.gridwidth = GridBagConstraints.REMAINDER;
    JButton button = new JButton("A Button");
    button.addFocusListener(this);
    gridbag.setConstraints(button, c);
    add(button);

    c.weightx = 0.0;
    c.weighty = 0.1;
    c.fill = GridBagConstraints.BOTH;
    String listPrefix = "List Item #";
    Vector listVector = new Vector(numItems);
    for (int i = 0; i < numItems; i++) {
        listVector.addElement(listPrefix + i);
    }
    JList list = new JList(listVector);
    list.setSelectedIndex(1); //It's easier to see the focus change
    //if an item is selected.
    list.addFocusListener(this);
    JScrollPane listScrollPane = new JScrollPane(list);
    //We want to prevent the list's scroll bars
    //from getting the focus - even with the keyboard.
    //Note that in general we prefer setRequestFocusable
    //over setFocusable for reasons of accessibility,
    //but this is to work around bug #4866958.
    listScrollPane.getVerticalScrollBar().setFocusable(false);
    listScrollPane.getHorizontalScrollBar().setFocusable(false);
    gridbag.setConstraints(listScrollPane, c);
    add(listScrollPane);

    c.weighty = 1.0; //Make this row as tall as possible.
    c.gridheight = GridBagConstraints.REMAINDER;
    //Set up the area that reports focus-gained and focus-lost events.
    display = new JTextArea();
    display.setEditable(false);
    //The method setRequestFocusEnabled prevents a
    //component from being clickable, but it can still
    //get the focus through the keyboard - this ensures
    //user accessibility.
    display.setRequestFocusEnabled(false);
    display.addFocusListener(this);
    JScrollPane displayScrollPane = new JScrollPane(display);

    //Work around for bug #4866958.
    displayScrollPane.getHorizontalScrollBar().setFocusable(false);
    displayScrollPane.getVerticalScrollBar().setFocusable(false);
    gridbag.setConstraints(displayScrollPane, c);
    add(displayScrollPane);

    setPreferredSize(new Dimension(450, 450));
    setBorder(BorderFactory.createEmptyBorder(20, 20, 20, 20));
}

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From source file:com.github.cric.app.ui.SettingPanel.java

private JTextField textField(String defaultValue, boolean isInt) {

    JTextField field = new JTextField(defaultValue);
    addBorder(field, Color.GRAY);
    field.addFocusListener(new FocusListener() {

        @Override/*ww w.ja  v  a 2s.  c o m*/
        public void focusLost(FocusEvent e) {

            handleFocusLost(field, isInt);
        }

        @Override
        public void focusGained(FocusEvent e) {

            addBorder(field, Color.GRAY);
            field.selectAll();
        }
    });
    return field;
}

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From source file:de.fhg.iais.asc.ui.parts.HarvesterPanel.java

private JTextField createSetsTextField() {
    final JTextField textField = new JTextField(30);

    textField.addFocusListener(new FocusAdapter() {
        @Override//from ww  w.  j  ava2s.co m
        public void focusGained(FocusEvent e) {
            e.getOppositeComponent().requestFocus();

            // get the frame the panel is embedded in
            Component currentComponent = HarvesterPanel.this;
            while (currentComponent.getParent() != null && !(currentComponent instanceof JFrame)) {
                currentComponent = currentComponent.getParent();
            }
            final JFrame parentFrame = currentComponent instanceof JFrame ? (JFrame) currentComponent : null;

            if (HarvesterPanel.this.availableSets == null) {
                LocalizedOptionPane.showMessageDialog(parentFrame, "No_setnames_retrieved",
                        JOptionPane.ERROR_MESSAGE);
                return;
            }

            String[] selectedSets = textField.getText().split(","); //$NON-NLS-1$

            for (int i = 0; i < selectedSets.length; i++) {
                selectedSets[i] = selectedSets[i].trim();
            }

            SetSelectionWindow ssw = new SetSelectionWindow(parentFrame, HarvesterPanel.this.availableSets,
                    selectedSets);
            ssw.setVisible(true);

            textField.setText(StringUtils.join(ssw.getSelectedSets(), ", "));
        }
    });

    return textField;
}

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