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/*
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* Copyright 2003-2007 Sun Microsystems, Inc. All Rights Reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Sun designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Sun in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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* CA 95054 USA or visit www.sun.com if you need additional information or
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* have any questions.
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*/
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/*
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* This code is ported to XAWT from MAWT based on awt_mgrsel.c
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* and XSettings.java code written originally by Valeriy Ushakov
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* Author : Bino George
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*/
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package sun.awt.X11;
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import java.util.*;
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import java.awt.*;
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import sun.awt.XSettings;
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import java.util.logging.*;
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class XAWTXSettings extends XSettings implements XMSelectionListener {
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private final XAtom xSettingsPropertyAtom = XAtom.get("_XSETTINGS_SETTINGS");
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private static Logger log = Logger.getLogger("sun.awt.X11.XAWTXSettings");
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/* The maximal length of the property data. */
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public static final long MAX_LENGTH = 1000000;
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XMSelection settings;
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public XAWTXSettings() {
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initXSettings();
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}
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void initXSettings() {
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if (log.isLoggable(Level.FINE)) log.fine("Initializing XAWT XSettings");
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settings = new XMSelection("_XSETTINGS");
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settings.addSelectionListener(this);
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initPerScreenXSettings();
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}
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void dispose() {
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settings.removeSelectionListener(this);
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}
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public void ownerDeath(int screen, XMSelection sel, long deadOwner) {
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if (log.isLoggable(Level.FINE)) log.fine("Owner " + deadOwner + " died for selection " + sel + " screen "+ screen);
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}
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public void ownerChanged(int screen, XMSelection sel, long newOwner, long data, long timestamp) {
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if (log.isLoggable(Level.FINE)) log.fine("New Owner "+ newOwner + " for selection = " + sel + " screen " +screen );
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}
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public void selectionChanged(int screen, XMSelection sel, long owner , XPropertyEvent event) {
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log.fine("Selection changed on sel " + sel + " screen = " + screen + " owner = " + owner + " event = " + event);
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updateXSettings(screen,owner);
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}
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void initPerScreenXSettings() {
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if (log.isLoggable(Level.FINE)) log.fine("Updating Per XSettings changes");
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/*
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* As toolkit cannot yet cope with per-screen desktop properties,
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* only report XSETTINGS changes on the default screen. This
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* should be "good enough" for most cases.
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*/
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Map updatedSettings = null;
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XToolkit.awtLock();
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try {
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long display = XToolkit.getDisplay();
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int screen = (int) XlibWrapper.DefaultScreen(display);
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updatedSettings = getUpdatedSettings(settings.getOwner(screen));
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} finally {
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XToolkit.awtUnlock();
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}
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// we must not invoke this under Awt Lock
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((XToolkit)Toolkit.getDefaultToolkit()).parseXSettings(0,updatedSettings);
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}
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private void updateXSettings(int screen, long owner) {
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final Map updatedSettings = getUpdatedSettings(owner);
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// this method is called under awt lock and usually on toolkit thread
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// but parseXSettings() causes public code execution, so we need to transfer
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// this to EDT
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EventQueue.invokeLater( new Runnable() {
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public void run() {
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((XToolkit) Toolkit.getDefaultToolkit()).parseXSettings( 0, updatedSettings);
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}
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});
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}
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private Map getUpdatedSettings(final long owner) {
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if (log.isLoggable(Level.FINE)) log.fine("owner =" + owner);
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if (0 == owner) {
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return null;
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}
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Map settings = null;
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try {
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WindowPropertyGetter getter =
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new WindowPropertyGetter(owner, xSettingsPropertyAtom, 0, MAX_LENGTH,
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false, xSettingsPropertyAtom.getAtom() );
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try {
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int status = getter.execute(XToolkit.IgnoreBadWindowHandler);
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if (status != XlibWrapper.Success || getter.getData() == 0) {
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if (log.isLoggable(Level.FINE)) log.fine("OH OH : getter failed status = " + status );
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settings = null;
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}
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long ptr = getter.getData();
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if (log.isLoggable(Level.FINE)) log.fine("noItems = " + getter.getNumberOfItems());
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byte array[] = Native.toBytes(ptr,getter.getNumberOfItems());
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if (array != null) {
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settings = update(array);
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}
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} finally {
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getter.dispose();
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}
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}
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catch (Exception e) {
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e.printStackTrace();
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}
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return settings;
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}
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}
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