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Michael Taylor
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 Posted: Sat Jun 26, 2004 5:48 pm Post subject: OSX and cross-platform code |
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I have a routine that overrides the ComboBoxUI as part of a date popup
routine. I am trying to develop code that will run unchanged on OSX, Windows
and Linux. The following code works fine on OSX, but if I run the class on
any other implementation, it throws a ClassDefNotFound exception for the
apple.laf classes even though the other look and feels are in place.
Any ideas how I can keep the apple code but make the java code more
portable?
public void updateUI() {
ComboBoxUI cui = (ComboBoxUI) UIManager.getUI(this);
try {
if (cui instanceof MetalComboBoxUI) {
cui = new MetalDateComboBoxUI();
} else if (cui instanceof MotifComboBoxUI) {
cui = new MotifDateComboBoxUI();
} else if (cui instanceof WindowsComboBoxUI) {
cui = new WindowsDateComboBoxUI();
} else if (cui instanceof apple.laf.AquaComboBoxUI) {
cui = new AquaDateComboBoxUI();
}
setUI(cui);
}
catch (Exception e) {
}
}
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ak
Guest
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| Posted: Sat Jun 26, 2004 6:35 pm Post subject: Re: OSX and cross-platform code |
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| Quote: | I have a routine that overrides the ComboBoxUI as part of a date popup
routine. I am trying to develop code that will run unchanged on OSX,
Windows
and Linux. The following code works fine on OSX, but if I run the class on
any other implementation, it throws a ClassDefNotFound exception for the
apple.laf classes even though the other look and feels are in place.
public void updateUI() {
ComboBoxUI cui = (ComboBoxUI) UIManager.getUI(this);
try {
if (cui instanceof MetalComboBoxUI) {
cui = new MetalDateComboBoxUI();
} else if (cui instanceof MotifComboBoxUI) {
cui = new MotifDateComboBoxUI();
} else if (cui instanceof WindowsComboBoxUI) {
cui = new WindowsDateComboBoxUI();
} else if (cui instanceof apple.laf.AquaComboBoxUI) {
cui = new AquaDateComboBoxUI();
}
setUI(cui);
}
catch (Exception e) {
}
}
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you goes wrong way here.
If you want to create (J)DateComboBox you should _register_ your component
UI.
Register is simple:
public class DateComboBox extends JComboBox {
static {
checkUI();
UIManager.addPropertyChangeListener(new PropertyChangeListener() {
public void propertyChange(PropertyChangeEvent evt) {
checkUI();
}
});
}
private static void checkUI() {
String lafName = UIManager.getLookAndFeel().getName().toLowerCase();
if(lafName.indexOf("motif") != -1) {
UIManager.put("DateComboBox ", _package + ".MotifDateComboBoxUI");
}
else if(lafName.indexOf("windows") != -1) {
UIManager.put("DateComboBox ", _package + ".WindowsDateComboBoxUI");
}
else if(lafName.indexOf("metal") != -1) {
UIManager.put("DateComboBox ", _package + ".MetalDateComboBoxUI");
}
else if(<check apple here>) {
UIManager.put("DateComboBox ", _package + ".AquaDateComboBoxUI");
}
}
}
--
http://uio.dev.java.net Unified I/O for Java
http://reader.imagero.com Java image reader
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Michael Taylor
Guest
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| Posted: Sat Jun 26, 2004 7:01 pm Post subject: Re: OSX and cross-platform code |
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Thanks for your reply. I'm new to Swing and am trying your suggestion. I
keep getting an error on the "_package" in your example code (Cannot resolve
symbol). I'm probably missing something! Your help would again be
appreciated.
On 6/26/04 2:35 PM, in article cbkflb$bad$1 (AT) online (DOT) de, "ak"
<spam (AT) imagero (DOT) com> wrote:
| Quote: | I have a routine that overrides the ComboBoxUI as part of a date popup
routine. I am trying to develop code that will run unchanged on OSX,
Windows
and Linux. The following code works fine on OSX, but if I run the class on
any other implementation, it throws a ClassDefNotFound exception for the
apple.laf classes even though the other look and feels are in place.
public void updateUI() {
ComboBoxUI cui = (ComboBoxUI) UIManager.getUI(this);
try {
if (cui instanceof MetalComboBoxUI) {
cui = new MetalDateComboBoxUI();
} else if (cui instanceof MotifComboBoxUI) {
cui = new MotifDateComboBoxUI();
} else if (cui instanceof WindowsComboBoxUI) {
cui = new WindowsDateComboBoxUI();
} else if (cui instanceof apple.laf.AquaComboBoxUI) {
cui = new AquaDateComboBoxUI();
}
setUI(cui);
}
catch (Exception e) {
}
}
you goes wrong way here.
If you want to create (J)DateComboBox you should _register_ your component
UI.
Register is simple:
public class DateComboBox extends JComboBox {
static {
checkUI();
UIManager.addPropertyChangeListener(new PropertyChangeListener() {
public void propertyChange(PropertyChangeEvent evt) {
checkUI();
}
});
}
private static void checkUI() {
String lafName = UIManager.getLookAndFeel().getName().toLowerCase();
if(lafName.indexOf("motif") != -1) {
UIManager.put("DateComboBox ", _package + ".MotifDateComboBoxUI");
}
else if(lafName.indexOf("windows") != -1) {
UIManager.put("DateComboBox ", _package + ".WindowsDateComboBoxUI");
}
else if(lafName.indexOf("metal") != -1) {
UIManager.put("DateComboBox ", _package + ".MetalDateComboBoxUI");
}
else if(<check apple here>) {
UIManager.put("DateComboBox ", _package + ".AquaDateComboBoxUI");
}
}
}
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ak
Guest
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| Posted: Sat Jun 26, 2004 9:22 pm Post subject: Re: OSX and cross-platform code |
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| Quote: | Thanks for your reply. I'm new to Swing and am trying your suggestion. I
keep getting an error on the "_package" in your example code (Cannot
resolve
symbol). I'm probably missing something! Your help would again be
appreciated.
|
_package + ClassName = Full Qualified Class Name;
for example if MetalDateComboBoxUI is in package com.gui.plaf then you init
_package as follows:
static final String _package = "com.gui.plaf";
--
http://uio.dev.java.net Unified I/O for Java
http://reader.imagero.com Java image reader
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