1 /* 2 * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26 package sun.awt; 27 28 import java.awt.*; 29 30 /** 31 * An interface for the EventQueue delegate. 32 * This class is added to support JavaFX/AWT interop single threaded mode 33 * The delegate should be set in EventQueue by {@link EventQueue#setFwDispatcher(FwDispatcher)} 34 * If the delegate is not null, than it handles supported methods instead of the 35 * event queue. If it is null than the behaviour of an event queue does not change. 36 * 37 * @see EventQueue 38 * 39 * @author Petr Pchelko 40 * 41 * @since 1.8 42 */ 43 public interface FwDispatcher { 44 /** 45 * Delegates the {@link EventQueue#isDispatchThread()} method 46 */ 47 boolean isDispatchThread(); 48 49 /** 50 * Forwards a runnable to the delegate, which executes it on an appropriate thread. 51 * @param r a runnable calling {@link EventQueue#dispatchEventImpl(java.awt.AWTEvent, Object)} 52 */ 53 void scheduleDispatch(Runnable r); 54 55 /** 56 * Delegates the {@link java.awt.EventQueue#createSecondaryLoop()} method 57 */ 58 SecondaryLoop createSecondaryLoop(); 59 }