Java/Swing JFC/UI
Содержание
- 1 Displays the contents of the UIDefaults hash map for the current look and feel.
- 2 Get default values for Swing-based user interface
- 3 Getting the Default Values for a Look and Feel
- 4 How to change the look and feel of Swing applications
- 5 Replaces the standard scrollbar UI with a custom one
- 6 Retrieve information of all available UIManager defaults
- 7 Setting a UI Default Value That Is Created at Every Fetch
- 8 Setting a UI Default Value That Is Created When Fetched
- 9 UIManager defaults
- 10 UIManager resources to tweak the look of applications
Displays the contents of the UIDefaults hash map for the current look and feel.
/*
* Copyright 2008 Sun Microsystems, Inc. All Rights Reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* - Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* - Neither the name of Sun Microsystems nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
* IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.ruponent;
import java.awt.Dimension;
import java.awt.EventQueue;
import java.awt.Font;
import java.awt.Graphics;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.*;
import javax.swing.AbstractAction;
import javax.swing.Icon;
import javax.swing.JButton;
import javax.swing.JCheckBox;
import javax.swing.JComboBox;
import javax.swing.JComponent;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JMenuItem;
import javax.swing.JPanel;
import javax.swing.JRadioButton;
import javax.swing.JScrollPane;
import javax.swing.JTabbedPane;
import javax.swing.JTable;
import javax.swing.ListSelectionModel;
import javax.swing.LookAndFeel;
import javax.swing.RowFilter;
import javax.swing.SwingUtilities;
import javax.swing.UIDefaults;
import javax.swing.UIManager;
import javax.swing.border.Border;
import javax.swing.border.EmptyBorder;
import javax.swing.table.AbstractTableModel;
import javax.swing.table.DefaultTableColumnModel;
import javax.swing.table.TableCellRenderer;
import javax.swing.table.TableColumn;
import javax.swing.table.TableRowSorter;
/**
* Simple application which displays the contents of the UIDefaults hash map
* for the current look and feel.
*
* @author aim
*/
public class DefaultsDisplay extends JPanel {
private static final int rowHeight = 32;
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
public void run() {
JFrame frame = new JFrame("UIDefaults Display");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.add(new DefaultsDisplay());
frame.pack();
frame.setVisible(true);
}
});
}
private String OSXLookAndFeelName; // hack for look-and-feel name mismatch on OS X
private Map<String,String> lookAndFeelsMap;
private final Map<String,JComponent> defaultsTablesMap;
private JComboBox lookAndFeelComboBox;
private JCheckBox onlyVisualsCheckBox;
private JTabbedPane tabPane;
private RowFilter<UIDefaultsTableModel,Integer> visualsFilter;
/** Creates a new instance of DefaultsDisplayer */
public DefaultsDisplay() {
defaultsTablesMap = new HashMap<String,JComponent>();
try {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
if (System.getProperty("os.name").equals("Mac OS X")) {
OSXLookAndFeelName = UIManager.getLookAndFeel().getName();
}
} catch (Exception ex) {
// better work :-)
}
setLayout(new BorderLayout());
JPanel controls = new JPanel();
controls.add(createLookAndFeelControl());
controls.add(createFilterControl());
add(controls, BorderLayout.NORTH);
tabPane = new JTabbedPane();
add(tabPane, BorderLayout.CENTER);
addDefaultsTab();
}
protected JComponent createLookAndFeelControl() {
JPanel panel = new JPanel();
JLabel label = new JLabel("Current Look and Feel");
lookAndFeelComboBox = new JComboBox();
label.setLabelFor(lookAndFeelComboBox);
panel.add(label);
panel.add(lookAndFeelComboBox);
// Look for toolkit look and feels first
UIManager.LookAndFeelInfo lookAndFeelInfos[] = UIManager.getInstalledLookAndFeels();
lookAndFeelsMap = new HashMap<String,String>();
for(UIManager.LookAndFeelInfo info : lookAndFeelInfos) {
String name = info.getName();
// workaround for problem where Info and name property don"t match on OS X
if (name.equals("Mac OS X")) {
name = OSXLookAndFeelName;
}
// workaround for bug where Nimbus classname is incorrect
lookAndFeelsMap.put(name, name.equals("Nimbus")?
"com.sun.java.swing.plaf.nimbus.NimbusLookAndFeel" :
info.getClassName());
lookAndFeelComboBox.addItem(name);
}
lookAndFeelComboBox.setSelectedItem(UIManager.getLookAndFeel().getName());
lookAndFeelComboBox.addActionListener(new ChangeLookAndFeelAction());
return panel;
}
protected JComponent createFilterControl() {
onlyVisualsCheckBox = new JCheckBox("Show Only Visual Defaults");
onlyVisualsCheckBox.setSelected(true);
onlyVisualsCheckBox.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent event) {
boolean showOnlyVisuals = onlyVisualsCheckBox.isSelected();
for(int i = 0; i < tabPane.getTabCount() ; i++) {
JScrollPane scrollpane = (JScrollPane)tabPane.getComponentAt(i);
JTable table = (JTable)scrollpane.getViewport().getView();
TableRowSorter sorter = (TableRowSorter)table.getRowSorter();
sorter.setRowFilter(showOnlyVisuals? visualsFilter : null);
}
}
});
return onlyVisualsCheckBox;
}
protected boolean hasDefaultsTab(String lookAndFeelName) {
return defaultsTablesMap.get(lookAndFeelName) != null;
}
protected void addDefaultsTab() {
LookAndFeel lookAndFeel = UIManager.getLookAndFeel();
JScrollPane scrollPane = new JScrollPane(createDefaultsTable());
tabPane.addTab(lookAndFeel.getName() + " Defaults", scrollPane);
defaultsTablesMap.put(lookAndFeel.getName(), scrollPane);
}
protected JTable createDefaultsTable() {
JTable table = new JTable(new UIDefaultsTableModel());
table.setRowHeight(rowHeight);
table.setShowHorizontalLines(false);
table.setShowVerticalLines(false);
table.setIntercellSpacing(new Dimension(0,0));
table.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
initFilters(table);
DefaultTableColumnModel columnModel = new DefaultTableColumnModel();
Color rowColors[] = new Color[2];
rowColors[0] = UIManager.getColor("Table.background");
rowColors[1] = new Color((int)(rowColors[0].getRed() * .90),
(int)(rowColors[0].getGreen() * .95),
(int)(rowColors[0].getBlue() * .95));
int width = 0;
TableColumn column = new TableColumn();
column.setCellRenderer(new KeyRenderer(rowColors));
column.setModelIndex(UIDefaultsTableModel.KEY_COLUMN);
column.setHeaderValue("Key");
column.setPreferredWidth(250);
columnModel.addColumn(column);
width += column.getPreferredWidth();
column = new TableColumn();
column.setCellRenderer(new RowRenderer(rowColors));
column.setModelIndex(UIDefaultsTableModel.TYPE_COLUMN);
column.setHeaderValue("Type");
column.setPreferredWidth(250);
columnModel.addColumn(column);
width += column.getPreferredWidth();
column = new TableColumn();
column.setCellRenderer(new ValueRenderer(rowColors));
column.setModelIndex(UIDefaultsTableModel.VALUE_COLUMN);
column.setHeaderValue("Value");
column.setPreferredWidth(300);
columnModel.addColumn(column);
width += column.getPreferredWidth();
table.setColumnModel(columnModel);
table.setPreferredScrollableViewportSize(new Dimension(width, 12 * rowHeight));
return table;
}
protected void initFilters(JTable table) {
TableRowSorter sorter = new TableRowSorter(table.getModel());
table.setRowSorter(sorter);
if (visualsFilter == null) {
visualsFilter = new RowFilter<UIDefaultsTableModel,Integer>() {
public boolean include(Entry<? extends UIDefaultsTableModel, ? extends Integer> entry) {
UIDefaultsTableModel model = entry.getModel();
Object defaultsValue = model.getValueAt(entry.getIdentifier().intValue(),
UIDefaultsTableModel.VALUE_COLUMN);
return defaultsValue instanceof Color ||
defaultsValue instanceof Font ||
defaultsValue instanceof Icon;
}
};
}
if (onlyVisualsCheckBox.isSelected()) {
sorter.setRowFilter(visualsFilter);
}
}
private class ChangeLookAndFeelAction extends AbstractAction {
public ChangeLookAndFeelAction() {
super("Change LookAndFeel");
}
public void actionPerformed(ActionEvent event) {
String lookAndFeelName = (String)lookAndFeelComboBox.getSelectedItem();
try {
UIManager.setLookAndFeel(lookAndFeelsMap.get(lookAndFeelName));
SwingUtilities.updateComponentTreeUI(DefaultsDisplay.this.getTopLevelAncestor());
if (!hasDefaultsTab(lookAndFeelName)) {
addDefaultsTab();
}
tabPane.setSelectedComponent(defaultsTablesMap.get(lookAndFeelName));
} catch (Exception ex) {
System.err.println("could not change look and feel to " + lookAndFeelName);
System.err.println(ex);
}
}
}
private static class UIDefaultsTableModel extends AbstractTableModel {
private static final int KEY_COLUMN = 0;
private static final int TYPE_COLUMN = 1;
private static final int VALUE_COLUMN = 2;
private UIDefaults defaults;
private List<Object> keys;
public UIDefaultsTableModel() {
// make a local copy of the defaults table in case the look and feel changes
defaults = new UIDefaults();
keys = new ArrayList<Object>();
UIDefaults realDefaults = UIManager.getDefaults();
Enumeration keysEnum = realDefaults.keys();
while (keysEnum.hasMoreElements()) {
Object key = keysEnum.nextElement();
if (!defaults.containsKey(key)) {
keys.add(key);
defaults.put(key, realDefaults.get(key));
} else {
System.out.println("found duplicate key:"+key);
}
}
}
public int getColumnCount() {
return 3;
}
public int getRowCount() {
return defaults.size();
}
public Class getColumnClass(int column) {
Class klass = null;
switch(column) {
case KEY_COLUMN: {
klass = String.class;
break;
}
case TYPE_COLUMN: {
klass = String.class;
break;
}
case VALUE_COLUMN: {
klass = Object.class;
}
}
return klass;
}
public Object getValueAt(int row, int column) {
Object value = null;
switch(column) {
case KEY_COLUMN: {
value = keys.get(row);
break;
}
case TYPE_COLUMN: {
Object key = keys.get(row);
Object defaultsValue = defaults.get(key);
value = defaultsValue != null? defaultsValue.getClass().getName() : "";
break;
}
case VALUE_COLUMN: {
value = defaults.get(keys.get(row));
}
}
return value;
}
}
private static class RowRenderer extends JLabel implements TableCellRenderer {
private final Color[] rowColors;
private final Border noFocusBorder = new EmptyBorder(1, 1, 1, 1);
public RowRenderer(Color colors[]) {
rowColors = colors;
}
public Component getTableCellRendererComponent(JTable table, Object value,
boolean isSelected, boolean hasFocus, int row, int column) {
setText(value != null? value.toString() : "unknown");
setIcon(null);
setColors(table, row, isSelected);
setBorder(this, hasFocus, isSelected);
return this;
}
protected void setColors(JTable table, int row, boolean isSelected) {
if (!isSelected) {
setBackground(rowColors[row % rowColors.length]);
setForeground(table.getForeground());
} else {
setBackground(table.getSelectionBackground());
setForeground(table.getSelectionForeground());
}
}
protected void setBorder(JComponent renderer, boolean hasFocus, boolean isSelected) {
if (hasFocus) {
Border border = null;
if (isSelected) {
border = UIManager.getBorder("Table.focusSelectedCellHighlightBorder");
}
if (border == null) {
border = UIManager.getBorder("Table.focusCellHighlightBorder");
}
renderer.setBorder(border);
} else {
renderer.setBorder(noFocusBorder);
}
}
}
private static class KeyRenderer extends RowRenderer {
public KeyRenderer(Color colors[]) {
super(colors);
setFont(getFont().deriveFont(Font.BOLD));
}
}
private static class ValueRenderer extends RowRenderer {
private final JButton buttonIconRenderer;
private final JRadioButton radioIconRenderer;
private final JMenuItem menuItemIconRenderer;
private final JCheckBox checkboxIconRenderer;
public ValueRenderer(Color colors[]) {
super(colors);
buttonIconRenderer = new JButton();
buttonIconRenderer.setBorderPainted(false);
buttonIconRenderer.setContentAreaFilled(false);
buttonIconRenderer.setText("(for AbstractButtons only)");
radioIconRenderer = new JRadioButton();
radioIconRenderer.setBorderPainted(false);
radioIconRenderer.setText("for JRadioButtons only)");
checkboxIconRenderer = new JCheckBox();
checkboxIconRenderer.setBorderPainted(false);
checkboxIconRenderer.setText("for JCheckBoxes only)");
menuItemIconRenderer = new JMenuItem();
menuItemIconRenderer.setBorderPainted(false);
menuItemIconRenderer.setText("(for JMenuItems only)");
}
public Component getTableCellRendererComponent(JTable table, Object value,
boolean isSelected, boolean hasFocus, int row, int column) {
JComponent renderer = null;
if (value instanceof Icon) {
Icon icon = (Icon)value;
// Hack to fix problem where some plaf Icons cast the component to
// various component classes. yikes! not very re-usable icons :(
String className = (String)table.getValueAt(row, UIDefaultsTableModel.TYPE_COLUMN);
if (className.contains("BasicIconFactory$RadioButtonMenuItemIcon") ||
className.contains("BasicIconFactory$CheckBoxMenuItemIcon") ||
className.contains("OceanTheme$IFIcon") ||
className.contains("MotifIconFactory$RadioButtonIcon") ||
className.contains("MotifIconFactory$CheckBoxIcon") ||
className.contains("MotifIconFactory$MenuArrowIcon") ||
className.contains("WindowsIconFactory$FrameButtonIcon") ||
className.contains("WindowsIconFactory$RadioButtonIcon")) {
buttonIconRenderer.setIcon(icon);
buttonIconRenderer.setSelected(true);
renderer = buttonIconRenderer;
} else if (className.contains("MetalIconFactory$RadioButtonIcon")) {
radioIconRenderer.setIcon(icon);
renderer = radioIconRenderer;
} else if (className.contains("MetalIconFactory$RadioButtonMenuItemIcon") ||
className.contains("MetalIconFactory$CheckBoxMenuItemIcon") ||
className.contains("MetalIconFactory$MenuArrowIcon") ||
className.contains("MetalIconFactory$MenuItemArrowIcon")) {
menuItemIconRenderer.setIcon(icon);
menuItemIconRenderer.setSelected(true);
renderer = menuItemIconRenderer;
} else if (className.contains("MetalIconFactory$CheckBoxIcon") ||
className.contains("WindowsIconFactory$CheckBoxIcon")) {
checkboxIconRenderer.setIcon(icon);
checkboxIconRenderer.setSelected(true);
renderer = checkboxIconRenderer;
}
}
if (renderer != null) {
// special hack renderer for icons needs to be colorized because
// it doesn"t extend RowRenderer
setColors(table, row, isSelected);
setBorder(renderer, hasFocus, isSelected);
} else {
// renderer == this
renderer = (JComponent)super.getTableCellRendererComponent(table, value, isSelected, hasFocus, row, column);
if (value instanceof Color) {
Color color = (Color)value;
float[] hsb = Color.RGBtoHSB(color.getRed(),
color.getGreen(), color.getBlue(), null);
setIcon(ColorIcon.getIcon(color));
setText("RGB=" + color.getRed() + ","+ color.getGreen() + ","+ color.getBlue() + " " +
"HSB=" + String.format("%.0f%n",hsb[0]*360) + "," +
String.format("%.3f%n",hsb[1]) + "," +
String.format("%.3f%n", hsb[2]));
} else if (value instanceof Font) {
Font font = (Font)value;
setFont(font);
setText(font.getFontName() + " size="+ font.getSize2D());
setIcon(null);
} else if (value instanceof Icon) {
setIcon((Icon)value);
setText("");
}
}
return renderer;
}
@Override
protected void paintComponent(Graphics g) {
try {
super.paintComponent(g);
} catch (ClassCastException ex) {
System.out.println("cast exception:" + ex.getMessage());
}
}
}
private static class ColorIcon implements Icon {
private static HashMap<Color,ColorIcon> icons;
private Color color;
private int size = DefaultsDisplay.rowHeight - 3;
public static ColorIcon getIcon(Color color) {
if (icons == null) {
icons = new HashMap<Color,ColorIcon>();
}
ColorIcon icon = icons.get(color);
if (icon == null) {
icon = new ColorIcon(color);
icons.put(color, icon);
}
return icon;
}
protected ColorIcon(Color color) {
this.color = color;
}
public void paintIcon(Component c, Graphics g, int x, int y) {
g.setColor(color);
g.fillRect(x, y, size, size);
g.setColor(Color.black);
g.drawRect(x, y, size, size);
}
public int getIconWidth() {
return size;
}
public int getIconHeight() {
return size;
}
}
}
Get default values for Swing-based user interface
import java.util.Iterator;
import java.util.Map;
import java.util.Set;
import javax.swing.UIManager;
public class Main {
public static void main(String[] args) throws Exception {
Set defaults = UIManager.getLookAndFeelDefaults().entrySet();
for (Iterator i = defaults.iterator(); i.hasNext();) {
Map.Entry entry = (Map.Entry) i.next();
System.out.print(entry.getKey() + " = ");
System.out.println(entry.getValue());
}
}
}
Getting the Default Values for a Look and Feel
import java.awt.Color;
import java.awt.Dimension;
import java.awt.Font;
import java.awt.Insets;
import javax.swing.Icon;
import javax.swing.InputMap;
import javax.swing.UIDefaults;
import javax.swing.UIManager;
import javax.swing.border.Border;
public class Main {
public static void main(String[] argv) {
UIDefaults uidefs = UIManager.getLookAndFeelDefaults();
String[] keys = (String[]) uidefs.keySet().toArray(new String[0]);
for (int i = 0; i < keys.length; i++) {
Object v = uidefs.get(keys[i]);
if (v instanceof Integer) {
int intVal = uidefs.getInt(keys[i]);
} else if (v instanceof Boolean) {
boolean boolVal = uidefs.getBoolean(keys[i]);
} else if (v instanceof String) {
String strVal = uidefs.getString(keys[i]);
} else if (v instanceof Dimension) {
Dimension dimVal = uidefs.getDimension(keys[i]);
} else if (v instanceof Insets) {
Insets insetsVal = uidefs.getInsets(keys[i]);
} else if (v instanceof Color) {
Color colorVal = uidefs.getColor(keys[i]);
} else if (v instanceof Font) {
Font fontVal = uidefs.getFont(keys[i]);
} else if (v instanceof Border) {
Border borderVal = uidefs.getBorder(keys[i]);
} else if (v instanceof Icon) {
Icon iconVal = uidefs.getIcon(keys[i]);
} else if (v instanceof javax.swing.text.JTextComponent.KeyBinding[]) {
javax.swing.text.JTextComponent.KeyBinding[] keyBindsVal = (javax.swing.text.JTextComponent.KeyBinding[]) uidefs
.get(keys[i]);
} else if (v instanceof InputMap) {
InputMap imapVal = (InputMap) uidefs.get(keys[i]);
} else {
System.out.println("Unknown type");
}
}
}
}
How to change the look and feel of Swing applications
import java.awt.BorderLayout;
import java.awt.GridLayout;
import java.awt.event.ItemEvent;
import java.awt.event.ItemListener;
import javax.swing.ButtonGroup;
import javax.swing.JButton;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JRadioButton;
import javax.swing.SwingConstants;
import javax.swing.SwingUtilities;
import javax.swing.UIManager;
public class Main extends JFrame {
private String strings[] = { "Metal", "Motif", "Windows" };
private UIManager.LookAndFeelInfo looks[] = UIManager.getInstalledLookAndFeels();
private JRadioButton radio[] = new JRadioButton[strings.length];
private JButton button = new JButton("JButton");
private JLabel label= new JLabel("This is a Metal look-and-feel", SwingConstants.CENTER);
private JComboBox comboBox = new JComboBox(strings);
public Main() {
JPanel northPanel = new JPanel();
northPanel.setLayout(new GridLayout(3, 1, 0, 5));
northPanel.add(label);
northPanel.add(button);
northPanel.add(comboBox);
add(northPanel, BorderLayout.NORTH);
JPanel southPanel = new JPanel();
ItemHandler handler = new ItemHandler();
southPanel.setLayout(new GridLayout(1, radio.length));
ButtonGroup group = new ButtonGroup();
for (int i = 0; i < radio.length; i++) {
radio[i] = new JRadioButton(strings[i]);
radio[i].addItemListener(handler);
group.add(radio[i]);
southPanel.add(radio[i]);
}
add(southPanel, BorderLayout.SOUTH);
setSize(300, 200);
setVisible(true);
radio[0].setSelected(true);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}
private void changeTheLookAndFeel(int value) {
try {
UIManager.setLookAndFeel(looks[value].getClassName());
SwingUtilities.updateComponentTreeUI(this);
} catch (Exception e) {
e.printStackTrace();
}
}
public static void main(String args[]) {
Main dx = new Main();
}
private class ItemHandler implements ItemListener {
public void itemStateChanged(ItemEvent e) {
for (int i = 0; i < radio.length; i++)
if (radio[i].isSelected()) {
label.setText("This is a " + strings[i] + " look-and-feel");
comboBox.setSelectedIndex(i);
changeTheLookAndFeel(i);
}
}
}
}
Replaces the standard scrollbar UI with a custom one
//An example of modifying an existing L&F.
//This example replaces thestandard scrollbar UI with a custom one.
//
import java.awt.Container;
import java.awt.GridLayout;
import java.io.FileReader;
import java.io.IOException;
import javax.swing.JComponent;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.UIManager;
public class MetalModExample {
public static void main(String[] args) {
try {
UIManager.setLookAndFeel("javax.swing.plaf.metal.MetalLookAndFeel");
} catch (Exception e) {
System.err.println("Metal is not available on this platform?!");
System.exit(1);
}
JComponent before = makeExamplePane();
UIManager.put("ScrollBarUI", "MyMetalScrollBarUI");
JComponent after = makeExamplePane();
JFrame f = new JFrame();
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
Container c = f.getContentPane();
c.setLayout(new GridLayout(2, 1, 0, 1));
c.add(before);
c.add(after);
f.setSize(450, 400);
f.setVisible(true);
}
public static JComponent makeExamplePane() {
JTextArea text = new JTextArea();
try {
text.read(new FileReader("MetalModExample.java"), null);
} catch (IOException ex) {
}
JScrollPane scroll = new JScrollPane(text);
return scroll;
}
}
Retrieve information of all available UIManager defaults
import javax.swing.LookAndFeel;
import javax.swing.UIManager;
public class Main {
public static void main(String[] args) {
System.out.println(" " + UIManager.getLookAndFeel().getName());
UIManager.LookAndFeelInfo[] inst = UIManager.getInstalledLookAndFeels();
for (int i = 0; i < inst.length; i++) {
System.out.println(" " + inst[i].getName());
}
LookAndFeel[] aux = UIManager.getAuxiliaryLookAndFeels();
if (aux != null) {
for (int i = 0; i < aux.length; i++) {
System.out.println(" " + aux[i].getName());
}
} else {
System.out.println(" <NONE>");
}
System.out.println(" " + UIManager.getCrossPlatformLookAndFeelClassName());
System.out.println(" " + UIManager.getSystemLookAndFeelClassName());
}
}
Setting a UI Default Value That Is Created at Every Fetch
import java.util.Date;
import javax.swing.UIDefaults;
import javax.swing.UIManager;
public class Main {
public static void main(String[] argv) {
Object activeValue = new UIDefaults.ActiveValue() {
public Object createValue(UIDefaults table) {
return new Date();
}
};
UIManager.put("key", activeValue);
Date d1 = (Date) UIManager.get("key");
Date d2 = (Date) UIManager.get("key");
boolean b = d1.equals(d2); // false
}
}
Setting a UI Default Value That Is Created When Fetched
import javax.swing.JPanel;
import javax.swing.UIDefaults;
import javax.swing.UIManager;
public class Main {
public static void main(String[] argv) {
Object lazyValue = new UIDefaults.LazyValue() {
public Object createValue(UIDefaults table) {
return new JPanel();
}
};
UIManager.put("key", lazyValue);
Object value = UIManager.get("key");
}
}
UIManager defaults
//An informational utility to print the various UIManager defaults.
import javax.swing.LookAndFeel;
import javax.swing.UIManager;
public class UIManagerDefaults {
public static void main(String[] args) {
System.out.println("Default L&F:");
System.out.println(" " + UIManager.getLookAndFeel().getName());
UIManager.LookAndFeelInfo[] inst = UIManager.getInstalledLookAndFeels();
System.out.println("Installed L&Fs: ");
for (int i = 0; i < inst.length; i++) {
System.out.println(" " + inst[i].getName());
}
LookAndFeel[] aux = UIManager.getAuxiliaryLookAndFeels();
System.out.println("Auxiliary L&Fs: ");
if (aux != null) {
for (int i = 0; i < aux.length; i++) {
System.out.println(" " + aux[i].getName());
}
} else {
System.out.println(" <NONE>");
}
System.out.println("Cross-Platform:");
System.out.println(UIManager.getCrossPlatformLookAndFeelClassName());
System.out.println("System:");
System.out.println(UIManager.getSystemLookAndFeelClassName());
System.exit(0);
}
}
UIManager resources to tweak the look of applications
//An example of using UIManager resources to tweak the look of applications.
import java.awt.BorderLayout;
import java.awt.Container;
import java.awt.FlowLayout;
import java.awt.Font;
import javax.swing.BorderFactory;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JDesktopPane;
import javax.swing.JFrame;
import javax.swing.JInternalFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.UIManager;
import javax.swing.border.Border;
import javax.swing.border.rupoundBorder;
public class ResourceModExample {
public static void main(String[] args) {
Border border = BorderFactory.createRaisedBevelBorder();
Border tripleBorder = new CompoundBorder(new CompoundBorder(border,border), border);
UIManager.put("Button.border", tripleBorder);
UIManager.put("InternalFrame.closeIcon", new ImageIcon("close.gif"));
UIManager.put("InternalFrame.iconizeIcon", new ImageIcon("iconify.gif"));
UIManager.put("InternalFrame.maximizeIcon", new ImageIcon("maximize.gif"));
UIManager.put("InternalFrame.altMaximizeIcon", new ImageIcon("altMax.gif"));
UIManager.put("InternalFrame.titleFont", new Font("Serif", Font.ITALIC,12));
UIManager.put("ScrollBar.width", new Integer(30));
JFrame f = new JFrame();
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
Container c = f.getContentPane();
JDesktopPane desk = new JDesktopPane();
c.add(desk, BorderLayout.CENTER);
JButton cut = new JButton("Cut");
JButton copy = new JButton("Copy");
JButton paste = new JButton("Paste");
JPanel p = new JPanel(new FlowLayout());
p.add(cut);
p.add(copy);
p.add(paste);
c.add(p, BorderLayout.SOUTH);
JInternalFrame inf = new JInternalFrame("MyFrame", true, true, true,true);
JLabel l = new JLabel(new ImageIcon("luggage.jpeg"));
JScrollPane scroll = new JScrollPane(l);
inf.setContentPane(scroll);
inf.setBounds(10, 10, 350, 280);
desk.add(inf);
inf.setVisible(true);
f.setSize(380, 360);
f.setVisible(true);
}
}
