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package sun.font;

import java.awt.AWTError;
import java.awt.Font;
import java.awt.GraphicsEnvironment;
import java.awt.Toolkit;
import java.security.AccessController;
import java.security.PrivilegedAction;

import sun.security.action.GetPropertyAction;


Factory class used to retrieve a valid FontManager instance for the current platform. A default implementation is given for Linux, Solaris and Windows. You can alter the behaviour of the getInstance() method by setting the sun.font.fontmanager property. For example: sun.font.fontmanager=sun.awt.X11FontManager
/** * Factory class used to retrieve a valid FontManager instance for the current * platform. * * A default implementation is given for Linux, Solaris and Windows. * You can alter the behaviour of the {@link #getInstance()} method by setting * the {@code sun.font.fontmanager} property. For example: * {@code sun.font.fontmanager=sun.awt.X11FontManager} */
public final class FontManagerFactory {
Our singleton instance.
/** Our singleton instance. */
private static FontManager instance = null; private static final String DEFAULT_CLASS; static { if (FontUtilities.isWindows) { DEFAULT_CLASS = "sun.awt.Win32FontManager"; } else if (FontUtilities.isMacOSX) { DEFAULT_CLASS = "sun.font.CFontManager"; } else { DEFAULT_CLASS = "sun.awt.X11FontManager"; } }
Get a valid FontManager implementation for the current platform.
Returns:a valid FontManager instance for the current platform
/** * Get a valid FontManager implementation for the current platform. * * @return a valid FontManager instance for the current platform */
public static synchronized FontManager getInstance() { if (instance != null) { return instance; } AccessController.doPrivileged(new PrivilegedAction<Object>() { public Object run() { try { String fmClassName = System.getProperty("sun.font.fontmanager", DEFAULT_CLASS); ClassLoader cl = ClassLoader.getSystemClassLoader(); Class<?> fmClass = Class.forName(fmClassName, true, cl); instance = (FontManager) fmClass.getDeclaredConstructor().newInstance(); } catch (ReflectiveOperationException ex) { throw new InternalError(ex); } return null; } }); return instance; } }