841 }
842
843 /**
844 * Returns the event currently being dispatched by the
845 * {@code EventQueue} associated with the calling thread. This is
846 * useful if a method needs access to the event, but was not designed to
847 * receive a reference to it as an argument. Note that this method should
848 * only be invoked from an application's event dispatching thread. If this
849 * method is invoked from another thread, null will be returned.
850 *
851 * @return the event currently being dispatched, or null if this method is
852 * invoked on a thread other than an event dispatching thread
853 * @since 1.4
854 */
855 public static AWTEvent getCurrentEvent() {
856 return Toolkit.getEventQueue().getCurrentEventImpl();
857 }
858 private AWTEvent getCurrentEventImpl() {
859 pushPopLock.lock();
860 try {
861 if (fxAppThreadIsDispatchThread) {
862 return (currentEvent != null)
863 ? currentEvent.get()
864 : null;
865 } else {
866 return (Thread.currentThread() == dispatchThread)
867 ? currentEvent.get()
868 : null;
869 }
870 } finally {
871 pushPopLock.unlock();
872 }
873 }
874
875 /**
876 * Replaces the existing {@code EventQueue} with the specified one.
877 * Any pending events are transferred to the new {@code EventQueue}
878 * for processing by it.
879 *
880 * @param newEventQueue an {@code EventQueue}
881 * (or subclass thereof) instance to be use
882 * @see java.awt.EventQueue#pop
883 * @throws NullPointerException if {@code newEventQueue} is {@code null}
884 * @since 1.2
885 */
886 public void push(EventQueue newEventQueue) {
887 if (getEventLog().isLoggable(PlatformLogger.Level.FINE)) {
888 getEventLog().fine("EventQueue.push(" + newEventQueue + ")");
889 }
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841 }
842
843 /**
844 * Returns the event currently being dispatched by the
845 * {@code EventQueue} associated with the calling thread. This is
846 * useful if a method needs access to the event, but was not designed to
847 * receive a reference to it as an argument. Note that this method should
848 * only be invoked from an application's event dispatching thread. If this
849 * method is invoked from another thread, null will be returned.
850 *
851 * @return the event currently being dispatched, or null if this method is
852 * invoked on a thread other than an event dispatching thread
853 * @since 1.4
854 */
855 public static AWTEvent getCurrentEvent() {
856 return Toolkit.getEventQueue().getCurrentEventImpl();
857 }
858 private AWTEvent getCurrentEventImpl() {
859 pushPopLock.lock();
860 try {
861 if (Thread.currentThread() == dispatchThread
862 || fxAppThreadIsDispatchThread) {
863 return (currentEvent != null)
864 ? currentEvent.get()
865 : null;
866 }
867 return null;
868 } finally {
869 pushPopLock.unlock();
870 }
871 }
872
873 /**
874 * Replaces the existing {@code EventQueue} with the specified one.
875 * Any pending events are transferred to the new {@code EventQueue}
876 * for processing by it.
877 *
878 * @param newEventQueue an {@code EventQueue}
879 * (or subclass thereof) instance to be use
880 * @see java.awt.EventQueue#pop
881 * @throws NullPointerException if {@code newEventQueue} is {@code null}
882 * @since 1.2
883 */
884 public void push(EventQueue newEventQueue) {
885 if (getEventLog().isLoggable(PlatformLogger.Level.FINE)) {
886 getEventLog().fine("EventQueue.push(" + newEventQueue + ")");
887 }
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