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src/java.desktop/share/classes/java/beans/Beans.java

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 399      *     can assume that an interactive GUI is available, so they
 400      *     can pop up dialog boxes, etc.  This will normally return
 401      *     true in a windowing environment, and will normally return
 402      *     false in a server environment or if an application is
 403      *     running as part of a batch job.
 404      *
 405      * @see Visibility
 406      *
 407      */
 408     public static boolean isGuiAvailable() {
 409         return ThreadGroupContext.getContext().isGuiAvailable();
 410     }
 411 
 412     /**
 413      * Used to indicate whether of not we are running in an application
 414      * builder environment.
 415      *
 416      * <p>Note that this method is security checked
 417      * and is not available to (for example) untrusted applets.
 418      * More specifically, if there is a security manager,
 419      * its <code>checkPropertiesAccess</code>
 420      * method is called. This could result in a SecurityException.
 421      *
 422      * @param isDesignTime  True if we're in an application builder tool.
 423      * @exception  SecurityException  if a security manager exists and its
 424      *             <code>checkPropertiesAccess</code> method doesn't allow setting
 425      *              of system properties.
 426      * @see SecurityManager#checkPropertiesAccess
 427      */
 428 
 429     public static void setDesignTime(boolean isDesignTime)
 430                         throws SecurityException {
 431         SecurityManager sm = System.getSecurityManager();
 432         if (sm != null) {
 433             sm.checkPropertiesAccess();
 434         }
 435         ThreadGroupContext.getContext().setDesignTime(isDesignTime);
 436     }
 437 
 438     /**
 439      * Used to indicate whether of not we are running in an environment
 440      * where GUI interaction is available.
 441      *
 442      * <p>Note that this method is security checked
 443      * and is not available to (for example) untrusted applets.
 444      * More specifically, if there is a security manager,
 445      * its <code>checkPropertiesAccess</code>
 446      * method is called. This could result in a SecurityException.
 447      *
 448      * @param isGuiAvailable  True if GUI interaction is available.
 449      * @exception  SecurityException  if a security manager exists and its
 450      *             <code>checkPropertiesAccess</code> method doesn't allow setting
 451      *              of system properties.
 452      * @see SecurityManager#checkPropertiesAccess
 453      */
 454 
 455     public static void setGuiAvailable(boolean isGuiAvailable)
 456                         throws SecurityException {
 457         SecurityManager sm = System.getSecurityManager();
 458         if (sm != null) {
 459             sm.checkPropertiesAccess();
 460         }
 461         ThreadGroupContext.getContext().setGuiAvailable(isGuiAvailable);
 462     }
 463 }
 464 
 465 /**
 466  * This subclass of ObjectInputStream delegates loading of classes to
 467  * an existing ClassLoader.
 468  */
 469 
 470 class ObjectInputStreamWithLoader extends ObjectInputStream




 399      *     can assume that an interactive GUI is available, so they
 400      *     can pop up dialog boxes, etc.  This will normally return
 401      *     true in a windowing environment, and will normally return
 402      *     false in a server environment or if an application is
 403      *     running as part of a batch job.
 404      *
 405      * @see Visibility
 406      *
 407      */
 408     public static boolean isGuiAvailable() {
 409         return ThreadGroupContext.getContext().isGuiAvailable();
 410     }
 411 
 412     /**
 413      * Used to indicate whether of not we are running in an application
 414      * builder environment.
 415      *
 416      * <p>Note that this method is security checked
 417      * and is not available to (for example) untrusted applets.
 418      * More specifically, if there is a security manager,
 419      * its {@code checkPropertiesAccess}
 420      * method is called. This could result in a SecurityException.
 421      *
 422      * @param isDesignTime  True if we're in an application builder tool.
 423      * @exception  SecurityException  if a security manager exists and its
 424      *             {@code checkPropertiesAccess} method doesn't allow setting
 425      *              of system properties.
 426      * @see SecurityManager#checkPropertiesAccess
 427      */
 428 
 429     public static void setDesignTime(boolean isDesignTime)
 430                         throws SecurityException {
 431         SecurityManager sm = System.getSecurityManager();
 432         if (sm != null) {
 433             sm.checkPropertiesAccess();
 434         }
 435         ThreadGroupContext.getContext().setDesignTime(isDesignTime);
 436     }
 437 
 438     /**
 439      * Used to indicate whether of not we are running in an environment
 440      * where GUI interaction is available.
 441      *
 442      * <p>Note that this method is security checked
 443      * and is not available to (for example) untrusted applets.
 444      * More specifically, if there is a security manager,
 445      * its {@code checkPropertiesAccess}
 446      * method is called. This could result in a SecurityException.
 447      *
 448      * @param isGuiAvailable  True if GUI interaction is available.
 449      * @exception  SecurityException  if a security manager exists and its
 450      *             {@code checkPropertiesAccess} method doesn't allow setting
 451      *              of system properties.
 452      * @see SecurityManager#checkPropertiesAccess
 453      */
 454 
 455     public static void setGuiAvailable(boolean isGuiAvailable)
 456                         throws SecurityException {
 457         SecurityManager sm = System.getSecurityManager();
 458         if (sm != null) {
 459             sm.checkPropertiesAccess();
 460         }
 461         ThreadGroupContext.getContext().setGuiAvailable(isGuiAvailable);
 462     }
 463 }
 464 
 465 /**
 466  * This subclass of ObjectInputStream delegates loading of classes to
 467  * an existing ClassLoader.
 468  */
 469 
 470 class ObjectInputStreamWithLoader extends ObjectInputStream


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