0N/A/*
2362N/A * Copyright (c) 2003, 2005, Oracle and/or its affiliates. All rights reserved.
0N/A * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
0N/A *
0N/A * This code is free software; you can redistribute it and/or modify it
0N/A * under the terms of the GNU General Public License version 2 only, as
2362N/A * published by the Free Software Foundation. Oracle designates this
0N/A * particular file as subject to the "Classpath" exception as provided
2362N/A * by Oracle in the LICENSE file that accompanied this code.
0N/A *
0N/A * This code is distributed in the hope that it will be useful, but WITHOUT
0N/A * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
0N/A * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
0N/A * version 2 for more details (a copy is included in the LICENSE file that
0N/A * accompanied this code).
0N/A *
0N/A * You should have received a copy of the GNU General Public License version
0N/A * 2 along with this work; if not, write to the Free Software Foundation,
0N/A * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
0N/A *
2362N/A * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
2362N/A * or visit www.oracle.com if you need additional information or have any
2362N/A * questions.
0N/A */
0N/A
0N/A/**
0N/A * This class is a placeholder for all internal static objects that represent
0N/A * system state. We keep our representation up-to-date with actual system
0N/A * state by tracking events, such as X Focus, Component under cursor etc.
0N/A * All attributes should be static private with accessors to simpify change
0N/A * tracking.
0N/A */
0N/Apackage sun.awt.X11;
0N/A
0N/Aimport java.awt.Component;
0N/Aimport java.lang.ref.WeakReference;
0N/A
0N/Aclass XAwtState {
0N/A /**
0N/A * The mouse is over this component.
0N/A * If the component is not disabled, it received MOUSE_ENTERED but no MOUSE_EXITED.
0N/A */
0N/A private static WeakReference componentMouseEnteredRef = null;
0N/A
0N/A static void setComponentMouseEntered(Component component) {
0N/A XToolkit.awtLock();
0N/A try {
0N/A if (component == null) {
0N/A componentMouseEnteredRef = null;
0N/A return;
0N/A }
0N/A if (component != getComponentMouseEntered()) {
0N/A componentMouseEnteredRef = new WeakReference(component);
0N/A }
0N/A } finally {
0N/A XToolkit.awtUnlock();
0N/A }
0N/A }
0N/A
0N/A static Component getComponentMouseEntered() {
0N/A XToolkit.awtLock();
0N/A try {
0N/A if (componentMouseEnteredRef == null) {
0N/A return null;
0N/A }
0N/A return (Component)componentMouseEnteredRef.get();
0N/A } finally {
0N/A XToolkit.awtUnlock();
0N/A }
0N/A }
0N/A
0N/A /**
0N/A * The XBaseWindow is created with OwnerGrabButtonMask
0N/A * (see X vol. 1, 8.3.3.2) so inside the app Key, Motion, and Button events
0N/A * are received by the window they actualy happened on, not the grabber.
0N/A * Then XBaseWindow dispatches them to the grabber. As a result
0N/A * XAnyEvent.get_window() returns actual window the event is originated,
0N/A * though the event is dispatched by the grabber.
0N/A */
0N/A private static boolean inManualGrab = false;
0N/A
0N/A static boolean isManualGrab() {
0N/A return inManualGrab;
0N/A }
0N/A
0N/A private static WeakReference grabWindowRef = null;
0N/A
0N/A /**
0N/A * The X Active Grab overrides any other active grab by the same
0N/A * client see XGrabPointer, XGrabKeyboard
0N/A */
0N/A static void setGrabWindow(XBaseWindow grabWindow) {
0N/A setGrabWindow(grabWindow, false);
0N/A }
0N/A
0N/A /**
0N/A * Automatic passive grab doesn't override active grab see XGrabButton
0N/A */
0N/A static void setAutoGrabWindow(XBaseWindow grabWindow) {
0N/A setGrabWindow(grabWindow, true);
0N/A }
0N/A
0N/A private static void setGrabWindow(XBaseWindow grabWindow, boolean isAutoGrab) {
0N/A XToolkit.awtLock();
0N/A try {
0N/A if (inManualGrab && isAutoGrab) {
0N/A return;
0N/A }
0N/A inManualGrab = grabWindow != null && !isAutoGrab;
0N/A if (grabWindow == null) {
0N/A grabWindowRef = null;
0N/A return;
0N/A }
0N/A if (grabWindow != getGrabWindow()) {
0N/A grabWindowRef = new WeakReference(grabWindow);
0N/A }
0N/A } finally {
0N/A XToolkit.awtUnlock();
0N/A }
0N/A }
0N/A
0N/A static XBaseWindow getGrabWindow() {
0N/A XToolkit.awtLock();
0N/A try {
0N/A if (grabWindowRef == null) {
0N/A return null;
0N/A }
0N/A XBaseWindow xbw = (XBaseWindow)grabWindowRef.get();
0N/A if( xbw != null && xbw.isDisposed() ) {
0N/A xbw = null;
0N/A grabWindowRef = null;
0N/A }else if( xbw == null ) {
0N/A grabWindowRef = null;
0N/A }
0N/A return xbw;
0N/A } finally {
0N/A XToolkit.awtUnlock();
0N/A }
0N/A }
0N/A}