Alt Faden, aber das ist der Code von JFontChooser, mit all den unnötigen Ressourcen entfernt. Kopieren Sie es und fügen Sie es in eine neue Klasse ein und es bietet einige großartige Funktionen, die meiner Meinung nach standardmäßig vorhanden sein sollten.
/************************************************************
* Copyright 2004-2005,2007-2008 Masahiko SAWAI All Rights Reserved.
************************************************************/
package paint;
import java.awt.BorderLayout;
import java.awt.Component;
import java.awt.Dimension;
import java.awt.Font;
import java.awt.Frame;
import java.awt.GraphicsEnvironment;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.FocusAdapter;
import java.awt.event.FocusEvent;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.util.MissingResourceException;
import java.util.ResourceBundle;
import javax.swing.AbstractAction;
import javax.swing.Action;
import javax.swing.ActionMap;
import javax.swing.BorderFactory;
import javax.swing.BoxLayout;
import javax.swing.InputMap;
import javax.swing.JButton;
import javax.swing.JComponent;
import javax.swing.JDialog;
import javax.swing.JLabel;
import javax.swing.JList;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextField;
import javax.swing.KeyStroke;
import javax.swing.ListSelectionModel;
import javax.swing.SwingUtilities;
import javax.swing.border.Border;
import javax.swing.event.DocumentEvent;
import javax.swing.event.DocumentListener;
import javax.swing.event.ListSelectionEvent;
import javax.swing.event.ListSelectionListener;
import javax.swing.text.BadLocationException;
import javax.swing.text.Document;
import javax.swing.text.JTextComponent;
import javax.swing.text.Position;
/**
* The <code>JFontChooser</code> class is a swing component
* for font selection.
* This class has <code>JFileChooser</code> like APIs.
* The following code pops up a font chooser dialog.
* <pre>
* JFontChooser fontChooser = new JFontChooser();
* int result = fontChooser.showDialog(parent);
* if (result == JFontChooser.OK_OPTION)
* {
* Font font = fontChooser.getSelectedFont();
* System.out.println("Selected Font : " + font);
* }
* <pre>
**/
public class JFontChooser extends JComponent
{
// class variables
/**
* Return value from <code>showDialog()</code>.
* @see #showDialog
**/
public static final int OK_OPTION = 0;
/**
* Return value from <code>showDialog()</code>.
* @see #showDialog
**/
public static final int CANCEL_OPTION = 1;
/**
* Return value from <code>showDialog()</code>.
* @see #showDialog
**/
public static final int ERROR_OPTION = -1;
private static final Font DEFAULT_SELECTED_FONT = new Font("Serif", Font.PLAIN, 12);
private static final Font DEFAULT_FONT = new Font("Dialog", Font.PLAIN, 10);
private static final int[] FONT_STYLE_CODES =
{
Font.PLAIN, Font.BOLD, Font.ITALIC, Font.BOLD | Font.ITALIC
};
private static final String[] DEFAULT_FONT_SIZE_STRINGS =
{
"8", "9", "10", "11", "12", "14", "16", "18", "20",
"22", "24", "26", "28", "36", "48", "72",
};
// instance variables
protected int dialogResultValue = ERROR_OPTION;
private String[] fontStyleNames = null;
private String[] fontFamilyNames = null;
private String[] fontSizeStrings = null;
private JTextField fontFamilyTextField = null;
private JTextField fontStyleTextField = null;
private JTextField fontSizeTextField = null;
private JList fontNameList = null;
private JList fontStyleList = null;
private JList fontSizeList = null;
private JPanel fontNamePanel = null;
private JPanel fontStylePanel = null;
private JPanel fontSizePanel = null;
private JPanel samplePanel = null;
private JTextField sampleText = null;
/**
* Constructs a <code>JFontChooser</code> object.
**/
public JFontChooser()
{
this(DEFAULT_FONT_SIZE_STRINGS);
}
/**
* Constructs a <code>JFontChooser</code> object using the given font size array.
* @param fontSizeStrings the array of font size string.
**/
public JFontChooser(String[] fontSizeStrings)
{
if (fontSizeStrings == null)
{
fontSizeStrings = DEFAULT_FONT_SIZE_STRINGS;
}
this.fontSizeStrings = fontSizeStrings;
JPanel selectPanel = new JPanel();
selectPanel.setLayout(new BoxLayout(selectPanel, BoxLayout.X_AXIS));
selectPanel.add(getFontFamilyPanel());
selectPanel.add(getFontStylePanel());
selectPanel.add(getFontSizePanel());
JPanel contentsPanel = new JPanel();
contentsPanel.setLayout(new GridLayout(2, 1));
contentsPanel.add(selectPanel, BorderLayout.NORTH);
contentsPanel.add(getSamplePanel(), BorderLayout.CENTER);
this.setLayout(new BoxLayout(this, BoxLayout.X_AXIS));
this.add(contentsPanel);
this.setBorder(BorderFactory.createEmptyBorder(5, 5, 5, 5));
this.setSelectedFont(DEFAULT_SELECTED_FONT);
}
public JTextField getFontFamilyTextField()
{
if (fontFamilyTextField == null)
{
fontFamilyTextField = new JTextField();
fontFamilyTextField.addFocusListener(
new TextFieldFocusHandlerForTextSelection(fontFamilyTextField));
fontFamilyTextField.addKeyListener(
new TextFieldKeyHandlerForListSelectionUpDown(getFontFamilyList()));
fontFamilyTextField.getDocument().addDocumentListener(
new ListSearchTextFieldDocumentHandler(getFontFamilyList()));
fontFamilyTextField.setFont(DEFAULT_FONT);
}
return fontFamilyTextField;
}
public JTextField getFontStyleTextField()
{
if (fontStyleTextField == null)
{
fontStyleTextField = new JTextField();
fontStyleTextField.addFocusListener(
new TextFieldFocusHandlerForTextSelection(fontStyleTextField));
fontStyleTextField.addKeyListener(
new TextFieldKeyHandlerForListSelectionUpDown(getFontStyleList()));
fontStyleTextField.getDocument().addDocumentListener(
new ListSearchTextFieldDocumentHandler(getFontStyleList()));
fontStyleTextField.setFont(DEFAULT_FONT);
}
return fontStyleTextField;
}
public JTextField getFontSizeTextField()
{
if (fontSizeTextField == null)
{
fontSizeTextField = new JTextField();
fontSizeTextField.addFocusListener(
new TextFieldFocusHandlerForTextSelection(fontSizeTextField));
fontSizeTextField.addKeyListener(
new TextFieldKeyHandlerForListSelectionUpDown(getFontSizeList()));
fontSizeTextField.getDocument().addDocumentListener(
new ListSearchTextFieldDocumentHandler(getFontSizeList()));
fontSizeTextField.setFont(DEFAULT_FONT);
}
return fontSizeTextField;
}
public JList getFontFamilyList()
{
if (fontNameList == null)
{
fontNameList = new JList(getFontFamilies());
fontNameList.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
fontNameList.addListSelectionListener(
new ListSelectionHandler(getFontFamilyTextField()));
fontNameList.setSelectedIndex(0);
fontNameList.setFont(DEFAULT_FONT);
fontNameList.setFocusable(false);
}
return fontNameList;
}
public JList getFontStyleList()
{
if (fontStyleList == null)
{
fontStyleList = new JList(getFontStyleNames());
fontStyleList.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
fontStyleList.addListSelectionListener(
new ListSelectionHandler(getFontStyleTextField()));
fontStyleList.setSelectedIndex(0);
fontStyleList.setFont(DEFAULT_FONT);
fontStyleList.setFocusable(false);
}
return fontStyleList;
}
public JList getFontSizeList()
{
if (fontSizeList == null)
{
fontSizeList = new JList(this.fontSizeStrings);
fontSizeList.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
fontSizeList.addListSelectionListener(
new ListSelectionHandler(getFontSizeTextField()));
fontSizeList.setSelectedIndex(0);
fontSizeList.setFont(DEFAULT_FONT);
fontSizeList.setFocusable(false);
}
return fontSizeList;
}
/**
* Get the family name of the selected font.
* @return the font family of the selected font.
*
* @see #setSelectedFontFamily
**/
public String getSelectedFontFamily()
{
String fontName = (String) getFontFamilyList().getSelectedValue();
return fontName;
}
/**
* Get the style of the selected font.
* @return the style of the selected font.
* <code>Font.PLAIN</code>, <code>Font.BOLD</code>,
* <code>Font.ITALIC</code>, <code>Font.BOLD|Font.ITALIC</code>
*
* @see java.awt.Font#PLAIN
* @see java.awt.Font#BOLD
* @see java.awt.Font#ITALIC
* @see #setSelectedFontStyle
**/
public int getSelectedFontStyle()
{
int index = getFontStyleList().getSelectedIndex();
return FONT_STYLE_CODES[index];
}
/**
* Get the size of the selected font.
* @return the size of the selected font
*
* @see #setSelectedFontSize
**/
public int getSelectedFontSize()
{
int fontSize = 1;
String fontSizeString = getFontSizeTextField().getText();
while (true)
{
try
{
fontSize = Integer.parseInt(fontSizeString);
break;
}
catch (NumberFormatException e)
{
fontSizeString = (String) getFontSizeList().getSelectedValue();
getFontSizeTextField().setText(fontSizeString);
}
}
return fontSize;
}
/**
* Get the selected font.
* @return the selected font
*
* @see #setSelectedFont
* @see java.awt.Font
**/
public Font getSelectedFont()
{
Font font = new Font(getSelectedFontFamily(),
getSelectedFontStyle(), getSelectedFontSize());
return font;
}
/**
* Set the family name of the selected font.
* @param name the family name of the selected font.
*
* @see getSelectedFontFamily
**/
public void setSelectedFontFamily(String name)
{
String[] names = getFontFamilies();
for (int i = 0; i < names.length; i++)
{
if (names[i].toLowerCase().equals(name.toLowerCase()))
{
getFontFamilyList().setSelectedIndex(i);
break;
}
}
updateSampleFont();
}
/**
* Set the style of the selected font.
* @param style the size of the selected font.
* <code>Font.PLAIN</code>, <code>Font.BOLD</code>,
* <code>Font.ITALIC</code>, or
* <code>Font.BOLD|Font.ITALIC</code>.
*
* @see java.awt.Font#PLAIN
* @see java.awt.Font#BOLD
* @see java.awt.Font#ITALIC
* @see #getSelectedFontStyle
**/
public void setSelectedFontStyle(int style)
{
for (int i = 0; i < FONT_STYLE_CODES.length; i++)
{
if (FONT_STYLE_CODES[i] == style)
{
getFontStyleList().setSelectedIndex(i);
break;
}
}
updateSampleFont();
}
/**
* Set the size of the selected font.
* @param size the size of the selected font
*
* @see #getSelectedFontSize
**/
public void setSelectedFontSize(int size)
{
String sizeString = String.valueOf(size);
for (int i = 0; i < this.fontSizeStrings.length; i++)
{
if (this.fontSizeStrings[i].equals(sizeString))
{
getFontSizeList().setSelectedIndex(i);
break;
}
}
getFontSizeTextField().setText(sizeString);
updateSampleFont();
}
/**
* Set the selected font.
* @param font the selected font
*
* @see #getSelectedFont
* @see java.awt.Font
**/
public void setSelectedFont(Font font)
{
setSelectedFontFamily(font.getFamily());
setSelectedFontStyle(font.getStyle());
setSelectedFontSize(font.getSize());
}
public String getVersionString()
{
return ("Version");
}
/**
* Show font selection dialog.
* @param parent Dialog's Parent component.
* @return OK_OPTION, CANCEL_OPTION or ERROR_OPTION
*
* @see #OK_OPTION
* @see #CANCEL_OPTION
* @see #ERROR_OPTION
**/
public int showDialog(Component parent)
{
dialogResultValue = ERROR_OPTION;
JDialog dialog = createDialog(parent);
dialog.addWindowListener(new WindowAdapter()
{
public void windowClosing(WindowEvent e)
{
dialogResultValue = CANCEL_OPTION;
}
});
dialog.setVisible(true);
dialog.dispose();
dialog = null;
return dialogResultValue;
}
protected class ListSelectionHandler implements ListSelectionListener
{
private JTextComponent textComponent;
ListSelectionHandler(JTextComponent textComponent)
{
this.textComponent = textComponent;
}
public void valueChanged(ListSelectionEvent e)
{
if (e.getValueIsAdjusting() == false)
{
JList list = (JList) e.getSource();
String selectedValue = (String) list.getSelectedValue();
String oldValue = textComponent.getText();
textComponent.setText(selectedValue);
if (!oldValue.equalsIgnoreCase(selectedValue))
{
textComponent.selectAll();
textComponent.requestFocus();
}
updateSampleFont();
}
}
}
protected class TextFieldFocusHandlerForTextSelection extends FocusAdapter
{
private JTextComponent textComponent;
public TextFieldFocusHandlerForTextSelection(JTextComponent textComponent)
{
this.textComponent = textComponent;
}
public void focusGained(FocusEvent e)
{
textComponent.selectAll();
}
public void focusLost(FocusEvent e)
{
textComponent.select(0, 0);
updateSampleFont();
}
}
protected class TextFieldKeyHandlerForListSelectionUpDown extends KeyAdapter
{
private JList targetList;
public TextFieldKeyHandlerForListSelectionUpDown(JList list)
{
this.targetList = list;
}
public void keyPressed(KeyEvent e)
{
int i = targetList.getSelectedIndex();
switch (e.getKeyCode())
{
case KeyEvent.VK_UP:
i = targetList.getSelectedIndex() - 1;
if (i < 0)
{
i = 0;
}
targetList.setSelectedIndex(i);
break;
case KeyEvent.VK_DOWN:
int listSize = targetList.getModel().getSize();
i = targetList.getSelectedIndex() + 1;
if (i >= listSize)
{
i = listSize - 1;
}
targetList.setSelectedIndex(i);
break;
default:
break;
}
}
}
protected class ListSearchTextFieldDocumentHandler implements DocumentListener
{
JList targetList;
public ListSearchTextFieldDocumentHandler(JList targetList)
{
this.targetList = targetList;
}
public void insertUpdate(DocumentEvent e)
{
update(e);
}
public void removeUpdate(DocumentEvent e)
{
update(e);
}
public void changedUpdate(DocumentEvent e)
{
update(e);
}
private void update(DocumentEvent event)
{
String newValue = "";
try
{
Document doc = event.getDocument();
newValue = doc.getText(0, doc.getLength());
}
catch (BadLocationException e)
{
e.printStackTrace();
}
if (newValue.length() > 0)
{
int index = targetList.getNextMatch(newValue, 0, Position.Bias.Forward);
if (index < 0)
{
index = 0;
}
targetList.ensureIndexIsVisible(index);
String matchedName = targetList.getModel().getElementAt(index).toString();
if (newValue.equalsIgnoreCase(matchedName))
{
if (index != targetList.getSelectedIndex())
{
SwingUtilities.invokeLater(new ListSelector(index));
}
}
}
}
public class ListSelector implements Runnable
{
private int index;
public ListSelector(int index)
{
this.index = index;
}
public void run()
{
targetList.setSelectedIndex(this.index);
}
}
}
protected class DialogOKAction extends AbstractAction
{
protected static final String ACTION_NAME = "OK";
private JDialog dialog;
protected DialogOKAction(JDialog dialog)
{
this.dialog = dialog;
putValue(Action.DEFAULT, ACTION_NAME);
putValue(Action.ACTION_COMMAND_KEY, ACTION_NAME);
putValue(Action.NAME, (ACTION_NAME));
}
public void actionPerformed(ActionEvent e)
{
dialogResultValue = OK_OPTION;
dialog.setVisible(false);
}
}
protected class DialogCancelAction extends AbstractAction
{
protected static final String ACTION_NAME = "Cancel";
private JDialog dialog;
protected DialogCancelAction(JDialog dialog)
{
this.dialog = dialog;
putValue(Action.DEFAULT, ACTION_NAME);
putValue(Action.ACTION_COMMAND_KEY, ACTION_NAME);
putValue(Action.NAME, (ACTION_NAME));
}
public void actionPerformed(ActionEvent e)
{
dialogResultValue = CANCEL_OPTION;
dialog.setVisible(false);
}
}
protected JDialog createDialog(Component parent)
{
Frame frame = parent instanceof Frame ? (Frame) parent
: (Frame) SwingUtilities.getAncestorOfClass(Frame.class, parent);
JDialog dialog = new JDialog(frame, ("Select Font"), true);
Action okAction = new DialogOKAction(dialog);
Action cancelAction = new DialogCancelAction(dialog);
JButton okButton = new JButton(okAction);
okButton.setFont(DEFAULT_FONT);
JButton cancelButton = new JButton(cancelAction);
cancelButton.setFont(DEFAULT_FONT);
JPanel buttonsPanel = new JPanel();
buttonsPanel.setLayout(new GridLayout(2, 1));
buttonsPanel.add(okButton);
buttonsPanel.add(cancelButton);
buttonsPanel.setBorder(BorderFactory.createEmptyBorder(25, 0, 10, 10));
ActionMap actionMap = buttonsPanel.getActionMap();
actionMap.put(cancelAction.getValue(Action.DEFAULT), cancelAction);
actionMap.put(okAction.getValue(Action.DEFAULT), okAction);
InputMap inputMap = buttonsPanel.getInputMap(JComponent.WHEN_IN_FOCUSED_WINDOW);
inputMap.put(KeyStroke.getKeyStroke("ESCAPE"), cancelAction.getValue(Action.DEFAULT));
inputMap.put(KeyStroke.getKeyStroke("ENTER"), okAction.getValue(Action.DEFAULT));
JPanel dialogEastPanel = new JPanel();
dialogEastPanel.setLayout(new BorderLayout());
dialogEastPanel.add(buttonsPanel, BorderLayout.NORTH);
dialog.getContentPane().add(this, BorderLayout.CENTER);
dialog.getContentPane().add(dialogEastPanel, BorderLayout.EAST);
dialog.pack();
dialog.setLocationRelativeTo(frame);
return dialog;
}
protected void updateSampleFont()
{
Font font = getSelectedFont();
getSampleTextField().setFont(font);
}
protected JPanel getFontFamilyPanel()
{
if (fontNamePanel == null)
{
fontNamePanel = new JPanel();
fontNamePanel.setLayout(new BorderLayout());
fontNamePanel.setBorder(BorderFactory.createEmptyBorder(5, 5, 5, 5));
fontNamePanel.setPreferredSize(new Dimension(180, 130));
JScrollPane scrollPane = new JScrollPane(getFontFamilyList());
scrollPane.getVerticalScrollBar().setFocusable(false);
scrollPane.setVerticalScrollBarPolicy(JScrollPane.VERTICAL_SCROLLBAR_ALWAYS);
JPanel p = new JPanel();
p.setLayout(new BorderLayout());
p.add(getFontFamilyTextField(), BorderLayout.NORTH);
p.add(scrollPane, BorderLayout.CENTER);
JLabel label = new JLabel(("Font Name"));
label.setHorizontalAlignment(JLabel.LEFT);
label.setHorizontalTextPosition(JLabel.LEFT);
label.setLabelFor(getFontFamilyTextField());
label.setDisplayedMnemonic('F');
fontNamePanel.add(label, BorderLayout.NORTH);
fontNamePanel.add(p, BorderLayout.CENTER);
}
return fontNamePanel;
}
protected JPanel getFontStylePanel()
{
if (fontStylePanel == null)
{
fontStylePanel = new JPanel();
fontStylePanel.setLayout(new BorderLayout());
fontStylePanel.setBorder(BorderFactory.createEmptyBorder(5, 5, 5, 5));
fontStylePanel.setPreferredSize(new Dimension(140, 130));
JScrollPane scrollPane = new JScrollPane(getFontStyleList());
scrollPane.getVerticalScrollBar().setFocusable(false);
scrollPane.setVerticalScrollBarPolicy(JScrollPane.VERTICAL_SCROLLBAR_ALWAYS);
JPanel p = new JPanel();
p.setLayout(new BorderLayout());
p.add(getFontStyleTextField(), BorderLayout.NORTH);
p.add(scrollPane, BorderLayout.CENTER);
JLabel label = new JLabel(("Font Style"));
label.setHorizontalAlignment(JLabel.LEFT);
label.setHorizontalTextPosition(JLabel.LEFT);
label.setLabelFor(getFontStyleTextField());
label.setDisplayedMnemonic('Y');
fontStylePanel.add(label, BorderLayout.NORTH);
fontStylePanel.add(p, BorderLayout.CENTER);
}
return fontStylePanel;
}
protected JPanel getFontSizePanel()
{
if (fontSizePanel == null)
{
fontSizePanel = new JPanel();
fontSizePanel.setLayout(new BorderLayout());
fontSizePanel.setPreferredSize(new Dimension(70, 130));
fontSizePanel.setBorder(BorderFactory.createEmptyBorder(5, 5, 5, 5));
JScrollPane scrollPane = new JScrollPane(getFontSizeList());
scrollPane.getVerticalScrollBar().setFocusable(false);
scrollPane.setVerticalScrollBarPolicy(JScrollPane.VERTICAL_SCROLLBAR_ALWAYS);
JPanel p = new JPanel();
p.setLayout(new BorderLayout());
p.add(getFontSizeTextField(), BorderLayout.NORTH);
p.add(scrollPane, BorderLayout.CENTER);
JLabel label = new JLabel(("Font Size"));
label.setHorizontalAlignment(JLabel.LEFT);
label.setHorizontalTextPosition(JLabel.LEFT);
label.setLabelFor(getFontSizeTextField());
label.setDisplayedMnemonic('S');
fontSizePanel.add(label, BorderLayout.NORTH);
fontSizePanel.add(p, BorderLayout.CENTER);
}
return fontSizePanel;
}
protected JPanel getSamplePanel()
{
if (samplePanel == null)
{
Border titledBorder = BorderFactory.createTitledBorder(
BorderFactory.createEtchedBorder(), ("Sample"));
Border empty = BorderFactory.createEmptyBorder(5, 10, 10, 10);
Border border = BorderFactory.createCompoundBorder(titledBorder, empty);
samplePanel = new JPanel();
samplePanel.setLayout(new BorderLayout());
samplePanel.setBorder(border);
samplePanel.add(getSampleTextField(), BorderLayout.CENTER);
}
return samplePanel;
}
protected JTextField getSampleTextField()
{
if (sampleText == null)
{
Border lowered = BorderFactory.createLoweredBevelBorder();
sampleText = new JTextField(("AaBbYyZz"));
sampleText.setBorder(lowered);
sampleText.setPreferredSize(new Dimension(300, 100));
}
return sampleText;
}
protected String[] getFontFamilies()
{
if (fontFamilyNames == null)
{
GraphicsEnvironment env = GraphicsEnvironment.getLocalGraphicsEnvironment();
fontFamilyNames = env.getAvailableFontFamilyNames();
}
return fontFamilyNames;
}
protected String[] getFontStyleNames()
{
if (fontStyleNames == null)
{
int i = 0;
fontStyleNames = new String[4];
fontStyleNames[i++] = ("Plain");
fontStyleNames[i++] = ("Bold");
fontStyleNames[i++] = ("Italic");
fontStyleNames[i++] = ("BoldItalic");
}
return fontStyleNames;
}
}
