问题
Is there a list somewhere of the UIManager.getColor() keys for Swing? I can't seem to find it online, just occasional references to strings like "Panel.background" and "Table.selectionBackground".
回答1:
I was looking for the same thing and found this page as well as an excellent overview of all these properties on http://nadeausoftware.com/node/85.
回答2:
I don't think there is a defined standard set of keys. But you could try this bit of code to list the ones currently available in alphabetical order:
List<String> colors = new ArrayList<String>();
for (Map.Entry<Object, Object> entry : UIManager.getDefaults().entrySet()) {
if (entry.getValue() instanceof Color) {
colors.add((String) entry.getKey()); // all the keys are strings
}
}
Collections.sort(colors);
for (String name : colors)
System.out.println(name);
This produces a list too long to reproduce here.
回答3:
@mmyers got me inspired. Here's a short program to list the UIManager defaults in a sortable table.
package com.example.test.gui;
import java.awt.Color;
import java.awt.Component;
import java.util.Map;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.UIManager;
import javax.swing.table.DefaultTableCellRenderer;
import ca.odell.glazedlists.BasicEventList;
import ca.odell.glazedlists.EventList;
import ca.odell.glazedlists.GlazedLists;
import ca.odell.glazedlists.SortedList;
import ca.odell.glazedlists.gui.AbstractTableComparatorChooser;
import ca.odell.glazedlists.gui.TableFormat;
import ca.odell.glazedlists.swing.EventTableModel;
import ca.odell.glazedlists.swing.TableComparatorChooser;
public class UIManagerDefaultsViewer {
public static class UIEntry
{
final private String key;
final private Object value;
UIEntry(Map.Entry<Object,Object> e)
{
this.key = e.getKey().toString();
this.value = e.getValue();
}
public String getKey() {
return key;
}
public Object getValue() {
return value;
}
public Class getValueClass() {
if (value == null)
return null; // ?!?!?!
return value.getClass();
}
public String getClassName() {
// doesn't handle arrays properly
if (value == null)
return "";
return value.getClass().getName();
}
}
public static class UIEntryRenderer extends DefaultTableCellRenderer
{
Color[] defaults = new Color[4];
public UIEntryRenderer()
{
super();
defaults[0] = UIManager.getColor("Table.background");
defaults[1] = UIManager.getColor("Table.selectionBackground");
defaults[2] = UIManager.getColor("Table.foreground");
defaults[3] = UIManager.getColor("Table.selectionForeground");
}
public void setDefaultColors(Component cell, boolean isSelected)
{
cell.setBackground(defaults[isSelected ? 1 : 0]);
cell.setForeground(defaults[isSelected ? 3 : 2]);
}
@Override
public Component getTableCellRendererComponent(JTable table, Object value,
boolean isSelected, boolean hasFocus, int row, int column)
{
Component cell = super.getTableCellRendererComponent(table, value,
isSelected, hasFocus, row, column);
if (table.convertColumnIndexToModel(column) == 1) // the value column
{
final EventTableModel<UIEntry> tableModel =
(EventTableModel<UIEntry>) table.getModel();
UIEntry e = tableModel.getElementAt(row);
JLabel l = (JLabel)cell;
if (value instanceof Color)
{
Color c = (Color)value;
cell.setBackground(c);
cell.setForeground(
c.getRed()+c.getGreen()+c.getBlue() >= 128*3
? Color.black : Color.white);
// choose either black or white depending on brightness
l.setText(String.format("Color 0x%08x (%d,%d,%d alpha=%d)",
c.getRGB(), c.getRed(), c.getGreen(), c.getBlue(), c.getAlpha()));
return cell;
}
else if (e.getKey().endsWith("ont"))
// possible font, not always ".font"
{
// fonts are weird, for some reason the value returned
// in the entry set of UIManager.getDefaults()
// is not the same type as the value "v" below
Object v = UIManager.get(e.getKey());
if (v instanceof javax.swing.plaf.FontUIResource)
{
javax.swing.plaf.FontUIResource font =
(javax.swing.plaf.FontUIResource)v;
l.setText("Font "+font.getFontName()+" "+font.getSize());
}
}
}
setDefaultColors(cell, isSelected);
return cell;
}
}
public static void main(String[] args) {
final EventList<UIEntry> uiEntryList =
GlazedLists.threadSafeList(new BasicEventList<UIEntry>());
for (Map.Entry<Object,Object> key : UIManager.getDefaults().entrySet())
{
uiEntryList.add(new UIEntry(key));
}
final SortedList<UIEntry> sortedUIEntryList = new SortedList<UIEntry>(uiEntryList, null);
// build a JTable
String[] propertyNames = new String[] {"key","value","className"};
String[] columnLabels = new String[] {"Key", "Value", "Class"};
TableFormat<UIEntry> tf = GlazedLists.tableFormat(UIEntry.class, propertyNames, columnLabels);
EventTableModel<UIEntry> etm = new EventTableModel<UIEntry>(sortedUIEntryList, tf);
JTable t = new JTable(etm);
TableComparatorChooser<UIEntry> tcc = TableComparatorChooser.install(t,
sortedUIEntryList, AbstractTableComparatorChooser.SINGLE_COLUMN,
tf);
sortedUIEntryList.setComparator(tcc.getComparatorsForColumn(0).get(0));
// default to sort by the key
t.setDefaultRenderer(Object.class, new UIEntryRenderer());
JFrame f = new JFrame("UI Manager Defaults Viewer");
// show the frame
f.add(new JScrollPane(t));
f.pack();
f.setLocationRelativeTo(null);
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
f.setVisible(true);
}
}
回答4:
This program is the best I've seen for visualizing the UIManager values (e.g. Fonts, Colors, Borders): http://tips4java.wordpress.com/2008/10/09/uimanager-defaults/
It lacks search, but it can filter by component or value type, which is pretty great.
回答5:
They are kind of Look and Feel implementation dependent. Look in BasicLookAndFeel.java for the basic keys. Don't expect all PL&F to behave the same, or even remain the same between versions.
来源：https://stackoverflow.com/questions/730649/swing-uimanager-getcolor-keys