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/* Glazed Lists (c) 2003-2006 */
/* http://publicobject.com/glazedlists/ publicobject.com,*/
/* O'Dell Engineering Ltd.*/
package ca.odell.glazedlists.impl;
// for inspecting themes
import javax.swing.*;
import javax.swing.plaf.metal.MetalLookAndFeel;
import javax.swing.plaf.metal.MetalTheme;
import java.lang.reflect.Method;
import java.security.AccessControlException;
/**
* A PLAFDetector provides a means to discover which versions of themes
* are available on the host system.
*
* @author <a href="mailto:jesse@swank.ca">Jesse Wilson</a>
*/
public final class PLAFDetector {
/**
* Workaround method to get the metal theme, either "Steel" or "Ocean". This is because the
* Metal look and feel's getName() property does not distinguish between versions correctly.
* A bug has been submitted to the Sun Java bug database and will be reviewed.
*/
public static String getMetalTheme() {
try {
MetalLookAndFeel metalLNF = (MetalLookAndFeel)UIManager.getLookAndFeel();
Method getCurrentTheme = metalLNF.getClass().getMethod("getCurrentTheme", new Class[0]);
MetalTheme currentTheme = (MetalTheme)getCurrentTheme.invoke(metalLNF, new Object[0]);
return "Metal/" + currentTheme.getName();
} catch(NoSuchMethodException e) {
// must be Java 1.4 because getCurrentTheme() method does not exist
// therefore the theme of interest is "Steel"
return "Metal/Steel";
} catch(Exception e) {
e.printStackTrace();
return "Metal/Steel";
}
}
/**
* Workaround method to get the Windows theme, either "Windows Classic",
* "Windows XP" or "Windows Vista".
*
* <p>The test for the Windows style is also an ugly hack because Swing's
* pluggable look-and-feel provides no alternative means for determining if
* the current theme is XP. For compatibility, the algorithm to determine if
* the style is XP is derived from similar code in the XPStyle class.
*/
public static String getWindowsTheme() {
String classic = "Classic Windows";
String xp = "Windows XP";
String vista = "Windows Vista";
// theme active property must be "Boolean.TRUE";
String themeActiveKey = "win.xpstyle.themeActive";
Boolean themeActive = (Boolean)java.awt.Toolkit.getDefaultToolkit().getDesktopProperty(themeActiveKey);
if(themeActive == null) return classic;
if(!themeActive.booleanValue()) return classic;
// no "swing.noxp" system property
String noXPProperty = "swing.noxp";
try {
if(System.getProperty(noXPProperty) != null) return classic;
} catch (AccessControlException e) {
// in WebStart, it is possible to receive this exception when
// querying for the swing.noxp property - in which case we don't
// want to acknowledge the security violation
}
// l&f class must not be "WindowsClassicLookAndFeel"
String classicLnF = "com.sun.java.swing.plaf.windows.WindowsClassicLookAndFeel";
if(UIManager.getLookAndFeel().getClass().getName().equals(classicLnF)) return "Classic Windows";
// breakdown by major engineering version
// Windows 2000 os.version is 5.0
// Windows XP os.version is 5.1
// Windows Vista os.version is 6
try {
double osVersion = Double.parseDouble(System.getProperty("os.version"));
if(osVersion >= 6.0) return vista;
if(osVersion >= 5.1) return xp;
return classic;
} catch (AccessControlException e) {
// return a reasonable default if we're not allowed access to the OS version
return xp;
} catch (NumberFormatException e) {
// return a reasonable default if the version wasn't in the expected format
return xp;
}
}
}
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