JDK14/Java14源码在线阅读
JDK14/Java14源码在线阅读 /
java.desktop /
share /
classes /
javax /
swing /
plaf /
basic /
BasicSpinnerUI.java
/*
* Copyright (c) 2000, 2018, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package javax.swing.plaf.basic;
import java.awt.*;
import java.awt.event.*;
import java.text.ParseException;
import javax.swing.*;
import javax.swing.border.*;
import javax.swing.event.*;
import javax.swing.plaf.*;
import javax.swing.text.*;
import java.beans.*;
import java.text.*;
import java.util.*;
import sun.swing.DefaultLookup;
/**
* The default Spinner UI delegate.
*
* @author Hans Muller
* @since 1.4
*/
public class BasicSpinnerUI extends SpinnerUI
{
/**
* The spinner that we're a UI delegate for. Initialized by
* the <code>installUI</code> method, and reset to null
* by <code>uninstallUI</code>.
*
* @see #installUI
* @see #uninstallUI
*/
protected JSpinner spinner;
private Handler handler;
/**
* The mouse/action listeners that are added to the spinner's
* arrow buttons. These listeners are shared by all
* spinner arrow buttons.
*
* @see #createNextButton
* @see #createPreviousButton
*/
private static final ArrowButtonHandler nextButtonHandler = new ArrowButtonHandler("increment", true);
private static final ArrowButtonHandler previousButtonHandler = new ArrowButtonHandler("decrement", false);
private PropertyChangeListener propertyChangeListener;
/**
* Used by the default LayoutManager class - SpinnerLayout for
* missing (null) editor/nextButton/previousButton children.
*/
private static final Dimension zeroSize = new Dimension(0, 0);
/**
* Returns a new instance of BasicSpinnerUI. SpinnerListUI
* delegates are allocated one per JSpinner.
*
* @param c the JSpinner (not used)
* @see ComponentUI#createUI
* @return a new BasicSpinnerUI object
*/
public static ComponentUI createUI(JComponent c) {
return new BasicSpinnerUI();
}
private void maybeAdd(Component c, String s) {
if (c != null) {
spinner.add(c, s);
}
}
/**
* Calls <code>installDefaults</code>, <code>installListeners</code>,
* and then adds the components returned by <code>createNextButton</code>,
* <code>createPreviousButton</code>, and <code>createEditor</code>.
*
* @param c the JSpinner
* @see #installDefaults
* @see #installListeners
* @see #createNextButton
* @see #createPreviousButton
* @see #createEditor
*/
public void installUI(JComponent c) {
this.spinner = (JSpinner)c;
installDefaults();
installListeners();
maybeAdd(createNextButton(), "Next");
maybeAdd(createPreviousButton(), "Previous");
maybeAdd(createEditor(), "Editor");
updateEnabledState();
installKeyboardActions();
}
/**
* Calls <code>uninstallDefaults</code>, <code>uninstallListeners</code>,
* and then removes all of the spinners children.
*
* @param c the JSpinner (not used)
*/
public void uninstallUI(JComponent c) {
uninstallDefaults();
uninstallListeners();
this.spinner = null;
c.removeAll();
}
/**
* Initializes <code>PropertyChangeListener</code> with
* a shared object that delegates interesting PropertyChangeEvents
* to protected methods.
* <p>
* This method is called by <code>installUI</code>.
*
* @see #replaceEditor
* @see #uninstallListeners
*/
protected void installListeners() {
propertyChangeListener = createPropertyChangeListener();
spinner.addPropertyChangeListener(propertyChangeListener);
if (DefaultLookup.getBoolean(spinner, this,
"Spinner.disableOnBoundaryValues", false)) {
spinner.addChangeListener(getHandler());
}
JComponent editor = spinner.getEditor();
if (editor != null && editor instanceof JSpinner.DefaultEditor) {
JTextField tf = ((JSpinner.DefaultEditor)editor).getTextField();
if (tf != null) {
tf.addFocusListener(nextButtonHandler);
tf.addFocusListener(previousButtonHandler);
}
}
}
/**
* Removes the <code>PropertyChangeListener</code> added
* by installListeners.
* <p>
* This method is called by <code>uninstallUI</code>.
*
* @see #installListeners
*/
protected void uninstallListeners() {
spinner.removePropertyChangeListener(propertyChangeListener);
spinner.removeChangeListener(handler);
JComponent editor = spinner.getEditor();
removeEditorBorderListener(editor);
if (editor instanceof JSpinner.DefaultEditor) {
JTextField tf = ((JSpinner.DefaultEditor)editor).getTextField();
if (tf != null) {
tf.removeFocusListener(nextButtonHandler);
tf.removeFocusListener(previousButtonHandler);
}
}
propertyChangeListener = null;
handler = null;
}
/**
* Initialize the <code>JSpinner</code> <code>border</code>,
* <code>foreground</code>, and <code>background</code>, properties
* based on the corresponding "Spinner.*" properties from defaults table.
* The <code>JSpinners</code> layout is set to the value returned by
* <code>createLayout</code>. This method is called by <code>installUI</code>.
*
* @see #uninstallDefaults
* @see #installUI
* @see #createLayout
* @see LookAndFeel#installBorder
* @see LookAndFeel#installColors
*/
protected void installDefaults() {
spinner.setLayout(createLayout());
LookAndFeel.installBorder(spinner, "Spinner.border");
LookAndFeel.installColorsAndFont(spinner, "Spinner.background", "Spinner.foreground", "Spinner.font");
LookAndFeel.installProperty(spinner, "opaque", Boolean.TRUE);
JComponent editor = spinner.getEditor();
if (editor instanceof JSpinner.DefaultEditor) {
JTextField tf = ((JSpinner.DefaultEditor) editor).getTextField();
if (tf != null) {
if (tf.getFont() instanceof UIResource) {
Font font = spinner.getFont();
tf.setFont(font == null ? null : new FontUIResource(font));
}
}
}
}
/**
* Sets the <code>JSpinner's</code> layout manager to null. This
* method is called by <code>uninstallUI</code>.
*
* @see #installDefaults
* @see #uninstallUI
*/
protected void uninstallDefaults() {
spinner.setLayout(null);
}
private Handler getHandler() {
if (handler == null) {
handler = new Handler();
}
return handler;
}
/**
* Installs the necessary listeners on the next button, <code>c</code>,
* to update the <code>JSpinner</code> in response to a user gesture.
*
* @param c Component to install the listeners on
* @throws NullPointerException if <code>c</code> is null.
* @see #createNextButton
* @since 1.5
*/
protected void installNextButtonListeners(Component c) {
installButtonListeners(c, nextButtonHandler);
}
/**
* Installs the necessary listeners on the previous button, <code>c</code>,
* to update the <code>JSpinner</code> in response to a user gesture.
*
* @param c Component to install the listeners on.
* @throws NullPointerException if <code>c</code> is null.
* @see #createPreviousButton
* @since 1.5
*/
protected void installPreviousButtonListeners(Component c) {
installButtonListeners(c, previousButtonHandler);
}
private void installButtonListeners(Component c,
ArrowButtonHandler handler) {
if (c instanceof JButton) {
((JButton)c).addActionListener(handler);
}
c.addMouseListener(handler);
}
/**
* Creates a <code>LayoutManager</code> that manages the <code>editor</code>,
* <code>nextButton</code>, and <code>previousButton</code>
* children of the JSpinner. These three children must be
* added with a constraint that identifies their role:
* "Editor", "Next", and "Previous". The default layout manager
* can handle the absence of any of these children.
*
* @return a LayoutManager for the editor, next button, and previous button.
* @see #createNextButton
* @see #createPreviousButton
* @see #createEditor
*/
protected LayoutManager createLayout() {
return getHandler();
}
/**
* Creates a <code>PropertyChangeListener</code> that can be
* added to the JSpinner itself. Typically, this listener
* will call replaceEditor when the "editor" property changes,
* since it's the <code>SpinnerUI's</code> responsibility to
* add the editor to the JSpinner (and remove the old one).
* This method is called by <code>installListeners</code>.
*
* @return A PropertyChangeListener for the JSpinner itself
* @see #installListeners
*/
protected PropertyChangeListener createPropertyChangeListener() {
return getHandler();
}
/**
* Creates a decrement button, i.e. component that replaces the spinner
* value with the object returned by <code>spinner.getPreviousValue</code>.
* By default the <code>previousButton</code> is a {@code JButton}. If the
* decrement button is not needed this method should return {@code null}.
*
* @return a component that will replace the spinner's value with the
* previous value in the sequence, or {@code null}
* @see #installUI
* @see #createNextButton
* @see #installPreviousButtonListeners
*/
protected Component createPreviousButton() {
Component c = createArrowButton(SwingConstants.SOUTH);
c.setName("Spinner.previousButton");
installPreviousButtonListeners(c);
return c;
}
/**
* Creates an increment button, i.e. component that replaces the spinner
* value with the object returned by <code>spinner.getNextValue</code>.
* By default the <code>nextButton</code> is a {@code JButton}. If the
* increment button is not needed this method should return {@code null}.
*
* @return a component that will replace the spinner's value with the
* next value in the sequence, or {@code null}
* @see #installUI
* @see #createPreviousButton
* @see #installNextButtonListeners
*/
protected Component createNextButton() {
Component c = createArrowButton(SwingConstants.NORTH);
c.setName("Spinner.nextButton");
installNextButtonListeners(c);
return c;
}
private Component createArrowButton(int direction) {
JButton b = new BasicArrowButton(direction);
Border buttonBorder = UIManager.getBorder("Spinner.arrowButtonBorder");
if (buttonBorder instanceof UIResource) {
// Wrap the border to avoid having the UIResource be replaced by
// the ButtonUI. This is the opposite of using BorderUIResource.
b.setBorder(new CompoundBorder(buttonBorder, null));
} else {
b.setBorder(buttonBorder);
}
b.setInheritsPopupMenu(true);
return b;
}
/**
* This method is called by installUI to get the editor component
* of the <code>JSpinner</code>. By default it just returns
* <code>JSpinner.getEditor()</code>. Subclasses can override
* <code>createEditor</code> to return a component that contains
* the spinner's editor or null, if they're going to handle adding
* the editor to the <code>JSpinner</code> in an
* <code>installUI</code> override.
* <p>
* Typically this method would be overridden to wrap the editor
* with a container with a custom border, since one can't assume
* that the editors border can be set directly.
* <p>
* The <code>replaceEditor</code> method is called when the spinners
* editor is changed with <code>JSpinner.setEditor</code>. If you've
* overriden this method, then you'll probably want to override
* <code>replaceEditor</code> as well.
*
* @return the JSpinners editor JComponent, spinner.getEditor() by default
* @see #installUI
* @see #replaceEditor
* @see JSpinner#getEditor
*/
protected JComponent createEditor() {
JComponent editor = spinner.getEditor();
maybeRemoveEditorBorder(editor);
installEditorBorderListener(editor);
editor.setInheritsPopupMenu(true);
updateEditorAlignment(editor);
return editor;
}
/**
* Called by the <code>PropertyChangeListener</code> when the
* <code>JSpinner</code> editor property changes. It's the responsibility
* of this method to remove the old editor and add the new one. By
* default this operation is just:
* <pre>
* spinner.remove(oldEditor);
* spinner.add(newEditor, "Editor");
* </pre>
* The implementation of <code>replaceEditor</code> should be coordinated
* with the <code>createEditor</code> method.
*
* @param oldEditor an old instance of editor
* @param newEditor a new instance of editor
* @see #createEditor
* @see #createPropertyChangeListener
*/
protected void replaceEditor(JComponent oldEditor, JComponent newEditor) {
spinner.remove(oldEditor);
maybeRemoveEditorBorder(newEditor);
installEditorBorderListener(newEditor);
newEditor.setInheritsPopupMenu(true);
spinner.add(newEditor, "Editor");
}
private void updateEditorAlignment(JComponent editor) {
if (editor instanceof JSpinner.DefaultEditor) {
// if editor alignment isn't set in LAF, we get 0 (CENTER) here
int alignment = UIManager.getInt("Spinner.editorAlignment");
JTextField text = ((JSpinner.DefaultEditor)editor).getTextField();
text.setHorizontalAlignment(alignment);
}
}
/**
* Remove the border around the inner editor component for LaFs
* that install an outside border around the spinner,
*/
private void maybeRemoveEditorBorder(JComponent editor) {
if (!UIManager.getBoolean("Spinner.editorBorderPainted")) {
if (editor instanceof JPanel &&
editor.getBorder() == null &&
editor.getComponentCount() > 0) {
editor = (JComponent)editor.getComponent(0);
}
if (editor != null && editor.getBorder() instanceof UIResource) {
editor.setBorder(null);
}
}
}
/**
* Remove the border around the inner editor component for LaFs
* that install an outside border around the spinner,
*/
private void installEditorBorderListener(JComponent editor) {
if (!UIManager.getBoolean("Spinner.editorBorderPainted")) {
if (editor instanceof JPanel &&
editor.getBorder() == null &&
editor.getComponentCount() > 0) {
editor = (JComponent)editor.getComponent(0);
}
if (editor != null &&
(editor.getBorder() == null ||
editor.getBorder() instanceof UIResource)) {
editor.addPropertyChangeListener(getHandler());
}
}
}
private void removeEditorBorderListener(JComponent editor) {
if (!UIManager.getBoolean("Spinner.editorBorderPainted")) {
if (editor instanceof JPanel &&
editor.getComponentCount() > 0) {
editor = (JComponent)editor.getComponent(0);
}
if (editor != null) {
editor.removePropertyChangeListener(getHandler());
}
}
}
/**
* Updates the enabled state of the children Components based on the
* enabled state of the <code>JSpinner</code>.
*/
private void updateEnabledState() {
updateEnabledState(spinner, spinner.isEnabled());
}
/**
* Recursively updates the enabled state of the child
* <code>Component</code>s of <code>c</code>.
*/
private void updateEnabledState(Container c, boolean enabled) {
for (int counter = c.getComponentCount() - 1; counter >= 0;counter--) {
Component child = c.getComponent(counter);
if (DefaultLookup.getBoolean(spinner, this,
"Spinner.disableOnBoundaryValues", false)) {
SpinnerModel model = spinner.getModel();
if (child.getName() == "Spinner.nextButton" &&
model.getNextValue() == null) {
child.setEnabled(false);
}
else if (child.getName() == "Spinner.previousButton" &&
model.getPreviousValue() == null) {
child.setEnabled(false);
}
else {
child.setEnabled(enabled);
}
}
else {
child.setEnabled(enabled);
}
if (child instanceof Container) {
updateEnabledState((Container)child, enabled);
}
}
}
/**
* Installs the keyboard Actions onto the JSpinner.
*
* @since 1.5
*/
protected void installKeyboardActions() {
InputMap iMap = getInputMap(JComponent.
WHEN_ANCESTOR_OF_FOCUSED_COMPONENT);
SwingUtilities.replaceUIInputMap(spinner, JComponent.
WHEN_ANCESTOR_OF_FOCUSED_COMPONENT,
iMap);
LazyActionMap.installLazyActionMap(spinner, BasicSpinnerUI.class,
"Spinner.actionMap");
}
/**
* Returns the InputMap to install for <code>condition</code>.
*/
private InputMap getInputMap(int condition) {
if (condition == JComponent.WHEN_ANCESTOR_OF_FOCUSED_COMPONENT) {
return (InputMap)DefaultLookup.get(spinner, this,
"Spinner.ancestorInputMap");
}
return null;
}
static void loadActionMap(LazyActionMap map) {
map.put("increment", nextButtonHandler);
map.put("decrement", previousButtonHandler);
}
/**
* Returns the baseline.
*
* @throws NullPointerException {@inheritDoc}
* @throws IllegalArgumentException {@inheritDoc}
* @see javax.swing.JComponent#getBaseline(int, int)
* @since 1.6
*/
public int getBaseline(JComponent c, int width, int height) {
super.getBaseline(c, width, height);
JComponent editor = spinner.getEditor();
Insets insets = spinner.getInsets();
width = width - insets.left - insets.right;
height = height - insets.top - insets.bottom;
if (width >= 0 && height >= 0) {
int baseline = editor.getBaseline(width, height);
if (baseline >= 0) {
return insets.top + baseline;
}
}
return -1;
}
/**
* Returns an enum indicating how the baseline of the component
* changes as the size changes.
*
* @throws NullPointerException {@inheritDoc}
* @see javax.swing.JComponent#getBaseline(int, int)
* @since 1.6
*/
public Component.BaselineResizeBehavior getBaselineResizeBehavior(
JComponent c) {
super.getBaselineResizeBehavior(c);
return spinner.getEditor().getBaselineResizeBehavior();
}
/**
* A handler for spinner arrow button mouse and action events. When
* a left mouse pressed event occurs we look up the (enabled) spinner
* that's the source of the event and start the autorepeat timer. The
* timer fires action events until any button is released at which
* point the timer is stopped and the reference to the spinner cleared.
* The timer doesn't start until after a 300ms delay, so often the
* source of the initial (and final) action event is just the button
* logic for mouse released - which means that we're relying on the fact
* that our mouse listener runs after the buttons mouse listener.
* <p>
* Note that one instance of this handler is shared by all slider previous
* arrow buttons and likewise for all of the next buttons,
* so it doesn't have any state that persists beyond the limits
* of a single button pressed/released gesture.
*/
@SuppressWarnings("serial") // Superclass is not serializable across versions
private static class ArrowButtonHandler extends AbstractAction
implements FocusListener, MouseListener, UIResource {
final javax.swing.Timer autoRepeatTimer;
final boolean isNext;
JSpinner spinner = null;
JButton arrowButton = null;
ArrowButtonHandler(String name, boolean isNext) {
super(name);
this.isNext = isNext;
autoRepeatTimer = new javax.swing.Timer(60, this);
autoRepeatTimer.setInitialDelay(300);
}
private JSpinner eventToSpinner(AWTEvent e) {
Object src = e.getSource();
while ((src instanceof Component) && !(src instanceof JSpinner)) {
src = ((Component)src).getParent();
}
return (src instanceof JSpinner) ? (JSpinner)src : null;
}
public void actionPerformed(ActionEvent e) {
JSpinner spinner = this.spinner;
if (!(e.getSource() instanceof javax.swing.Timer)) {
// Most likely resulting from being in ActionMap.
spinner = eventToSpinner(e);
if (e.getSource() instanceof JButton) {
arrowButton = (JButton)e.getSource();
}
} else {
if (arrowButton!=null && !arrowButton.getModel().isPressed()
&& autoRepeatTimer.isRunning()) {
autoRepeatTimer.stop();
spinner = null;
arrowButton = null;
}
}
if (spinner != null) {
try {
int calendarField = getCalendarField(spinner);
spinner.commitEdit();
if (calendarField != -1) {
((SpinnerDateModel)spinner.getModel()).
setCalendarField(calendarField);
}
Object value = (isNext) ? spinner.getNextValue() :
spinner.getPreviousValue();
if (value != null) {
spinner.setValue(value);
select(spinner);
}
} catch (IllegalArgumentException iae) {
UIManager.getLookAndFeel().provideErrorFeedback(spinner);
} catch (ParseException pe) {
UIManager.getLookAndFeel().provideErrorFeedback(spinner);
}
}
}
/**
* If the spinner's editor is a DateEditor, this selects the field
* associated with the value that is being incremented.
*/
private void select(JSpinner spinner) {
JComponent editor = spinner.getEditor();
if (editor instanceof JSpinner.DateEditor) {
JSpinner.DateEditor dateEditor = (JSpinner.DateEditor)editor;
JFormattedTextField ftf = dateEditor.getTextField();
Format format = dateEditor.getFormat();
Object value;
if (format != null && (value = spinner.getValue()) != null) {
SpinnerDateModel model = dateEditor.getModel();
DateFormat.Field field = DateFormat.Field.ofCalendarField(
model.getCalendarField());
if (field != null) {
try {
AttributedCharacterIterator iterator = format.
formatToCharacterIterator(value);
if (!select(ftf, iterator, field) &&
field == DateFormat.Field.HOUR0) {
select(ftf, iterator, DateFormat.Field.HOUR1);
}
}
catch (IllegalArgumentException iae) {}
}
}
}
}
/**
* Selects the passed in field, returning true if it is found,
* false otherwise.
*/
private boolean select(JFormattedTextField ftf,
AttributedCharacterIterator iterator,
DateFormat.Field field) {
int max = ftf.getDocument().getLength();
iterator.first();
do {
Map<?, ?> attrs = iterator.getAttributes();
if (attrs != null && attrs.containsKey(field)){
int start = iterator.getRunStart(field);
int end = iterator.getRunLimit(field);
if (start != -1 && end != -1 && start <= max &&
end <= max) {
ftf.select(start, end);
}
return true;
}
} while (iterator.next() != CharacterIterator.DONE);
return false;
}
/**
* Returns the calendarField under the start of the selection, or
* -1 if there is no valid calendar field under the selection (or
* the spinner isn't editing dates.
*/
private int getCalendarField(JSpinner spinner) {
JComponent editor = spinner.getEditor();
if (editor instanceof JSpinner.DateEditor) {
JSpinner.DateEditor dateEditor = (JSpinner.DateEditor)editor;
JFormattedTextField ftf = dateEditor.getTextField();
int start = ftf.getSelectionStart();
JFormattedTextField.AbstractFormatter formatter =
ftf.getFormatter();
if (formatter instanceof InternationalFormatter) {
Format.Field[] fields = ((InternationalFormatter)
formatter).getFields(start);
for (int counter = 0; counter < fields.length; counter++) {
if (fields[counter] instanceof DateFormat.Field) {
int calendarField;
if (fields[counter] == DateFormat.Field.HOUR1) {
calendarField = Calendar.HOUR;
}
else {
calendarField = ((DateFormat.Field)
fields[counter]).getCalendarField();
}
if (calendarField != -1) {
return calendarField;
}
}
}
}
}
return -1;
}
public void mousePressed(MouseEvent e) {
if (SwingUtilities.isLeftMouseButton(e) && e.getComponent().isEnabled()) {
spinner = eventToSpinner(e);
autoRepeatTimer.start();
focusSpinnerIfNecessary();
}
}
public void mouseReleased(MouseEvent e) {
autoRepeatTimer.stop();
arrowButton = null;
spinner = null;
}
public void mouseClicked(MouseEvent e) {
}
public void mouseEntered(MouseEvent e) {
if (spinner != null && !autoRepeatTimer.isRunning() && spinner == eventToSpinner(e)) {
autoRepeatTimer.start();
}
}
public void mouseExited(MouseEvent e) {
if (autoRepeatTimer.isRunning()) {
autoRepeatTimer.stop();
}
}
/**
* Requests focus on a child of the spinner if the spinner doesn't
* have focus.
*/
private void focusSpinnerIfNecessary() {
Component fo = KeyboardFocusManager.
getCurrentKeyboardFocusManager().getFocusOwner();
if (spinner.isRequestFocusEnabled() && (
fo == null ||
!SwingUtilities.isDescendingFrom(fo, spinner))) {
Container root = spinner;
if (!root.isFocusCycleRoot()) {
root = root.getFocusCycleRootAncestor();
}
if (root != null) {
FocusTraversalPolicy ftp = root.getFocusTraversalPolicy();
Component child = ftp.getComponentAfter(root, spinner);
if (child != null && SwingUtilities.isDescendingFrom(
child, spinner)) {
child.requestFocus();
}
}
}
}
public void focusGained(FocusEvent e) {
}
public void focusLost(FocusEvent e) {
if (spinner == eventToSpinner(e)) {
if (autoRepeatTimer.isRunning()) {
autoRepeatTimer.stop();
}
spinner = null;
if (arrowButton != null) {
ButtonModel model = arrowButton.getModel();
model.setPressed(false);
model.setArmed(false);
arrowButton = null;
}
}
}
}
private static class Handler implements LayoutManager,
PropertyChangeListener, ChangeListener {
//
// LayoutManager
//
private Component nextButton = null;
private Component previousButton = null;
private Component editor = null;
public void addLayoutComponent(String name, Component c) {
if ("Next".equals(name)) {
nextButton = c;
}
else if ("Previous".equals(name)) {
previousButton = c;
}
else if ("Editor".equals(name)) {
editor = c;
}
}
public void removeLayoutComponent(Component c) {
if (c == nextButton) {
nextButton = null;
}
else if (c == previousButton) {
previousButton = null;
}
else if (c == editor) {
editor = null;
}
}
private Dimension preferredSize(Component c) {
return (c == null) ? zeroSize : c.getPreferredSize();
}
public Dimension preferredLayoutSize(Container parent) {
Dimension nextD = preferredSize(nextButton);
Dimension previousD = preferredSize(previousButton);
Dimension editorD = preferredSize(editor);
/* Force the editors height to be a multiple of 2
*/
editorD.height = ((editorD.height + 1) / 2) * 2;
Dimension size = new Dimension(editorD.width, editorD.height);
size.width += Math.max(nextD.width, previousD.width);
Insets insets = parent.getInsets();
size.width += insets.left + insets.right;
size.height += insets.top + insets.bottom;
return size;
}
public Dimension minimumLayoutSize(Container parent) {
return preferredLayoutSize(parent);
}
private void setBounds(Component c, int x, int y, int width, int height) {
if (c != null) {
c.setBounds(x, y, width, height);
}
}
public void layoutContainer(Container parent) {
int width = parent.getWidth();
int height = parent.getHeight();
Insets insets = parent.getInsets();
if (nextButton == null && previousButton == null) {
setBounds(editor, insets.left, insets.top, width - insets.left - insets.right,
height - insets.top - insets.bottom);
return;
}
Dimension nextD = preferredSize(nextButton);
Dimension previousD = preferredSize(previousButton);
int buttonsWidth = Math.max(nextD.width, previousD.width);
int editorHeight = height - (insets.top + insets.bottom);
// The arrowButtonInsets value is used instead of the JSpinner's
// insets if not null. Defining this to be (0, 0, 0, 0) causes the
// buttons to be aligned with the outer edge of the spinner's
// border, and leaving it as "null" places the buttons completely
// inside the spinner's border.
Insets buttonInsets = UIManager.getInsets("Spinner.arrowButtonInsets");
if (buttonInsets == null) {
buttonInsets = insets;
}
/* Deal with the spinner's componentOrientation property.
*/
int editorX, editorWidth, buttonsX;
if (parent.getComponentOrientation().isLeftToRight()) {
editorX = insets.left;
editorWidth = width - insets.left - buttonsWidth - buttonInsets.right;
buttonsX = width - buttonsWidth - buttonInsets.right;
} else {
buttonsX = buttonInsets.left;
editorX = buttonsX + buttonsWidth;
editorWidth = width - buttonInsets.left - buttonsWidth - insets.right;
}
int nextY = buttonInsets.top;
int nextHeight = (height / 2) + (height % 2) - nextY;
int previousY = buttonInsets.top + nextHeight;
int previousHeight = height - previousY - buttonInsets.bottom;
setBounds(editor, editorX, insets.top, editorWidth, editorHeight);
setBounds(nextButton, buttonsX, nextY, buttonsWidth, nextHeight);
setBounds(previousButton, buttonsX, previousY, buttonsWidth, previousHeight);
}
//
// PropertyChangeListener
//
public void propertyChange(PropertyChangeEvent e)
{
String propertyName = e.getPropertyName();
if (e.getSource() instanceof JSpinner) {
JSpinner spinner = (JSpinner)(e.getSource());
SpinnerUI spinnerUI = spinner.getUI();
if (spinnerUI instanceof BasicSpinnerUI) {
BasicSpinnerUI ui = (BasicSpinnerUI)spinnerUI;
if ("editor".equals(propertyName)) {
JComponent oldEditor = (JComponent)e.getOldValue();
JComponent newEditor = (JComponent)e.getNewValue();
ui.replaceEditor(oldEditor, newEditor);
ui.updateEnabledState();
if (oldEditor instanceof JSpinner.DefaultEditor) {
JTextField tf =
((JSpinner.DefaultEditor)oldEditor).getTextField();
if (tf != null) {
tf.removeFocusListener(nextButtonHandler);
tf.removeFocusListener(previousButtonHandler);
}
}
if (newEditor instanceof JSpinner.DefaultEditor) {
JTextField tf =
((JSpinner.DefaultEditor)newEditor).getTextField();
if (tf != null) {
if (tf.getFont() instanceof UIResource) {
Font font = spinner.getFont();
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