jdk/src/solaris/classes/sun/awt/X11/XDragAndDropProtocols.java
author yan
Mon, 06 Oct 2008 16:45:00 +0400
changeset 1966 12a51fb0db0d
parent 2 90ce3da70b43
child 5506 202f599c92aa
permissions -rw-r--r--
5100701: Toolkit.getLockingKeyState() does not work on XToolkit, but works on Motif Summary: Does not work on Motif but works on XToolkit now; implemented using XQueryPointer. Reviewed-by: anthony
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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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package sun.awt.X11;
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import java.util.ArrayList;
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import java.util.Collections;
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import java.util.Iterator;
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import java.util.List;
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/**
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 * This class is a registry for the supported drag and drop protocols.
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 *
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 * @since 1.5
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 */
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final class XDragAndDropProtocols {
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    private final static List dragProtocols;
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    private final static List dropProtocols;
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    public static final String XDnD = "XDnD";
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    public static final String MotifDnD = "MotifDnD";
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    static {
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        // Singleton listener for all drag source protocols.
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        XDragSourceProtocolListener dragSourceProtocolListener =
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            XDragSourceContextPeer.getXDragSourceProtocolListener();
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        // Singleton listener for all drop target protocols.
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        XDropTargetProtocolListener dropTargetProtocolListener =
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            XDropTargetContextPeer.getXDropTargetProtocolListener();
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        List tDragSourceProtocols = new ArrayList();
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        XDragSourceProtocol xdndDragSourceProtocol =
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            XDnDDragSourceProtocol.createInstance(dragSourceProtocolListener);
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        tDragSourceProtocols.add(xdndDragSourceProtocol);
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        XDragSourceProtocol motifdndDragSourceProtocol =
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            MotifDnDDragSourceProtocol.createInstance(dragSourceProtocolListener);
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        tDragSourceProtocols.add(motifdndDragSourceProtocol);
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        List tDropTargetProtocols = new ArrayList();
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        XDropTargetProtocol xdndDropTargetProtocol =
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            XDnDDropTargetProtocol.createInstance(dropTargetProtocolListener);
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        tDropTargetProtocols.add(xdndDropTargetProtocol);
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        XDropTargetProtocol motifdndDropTargetProtocol =
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            MotifDnDDropTargetProtocol.createInstance(dropTargetProtocolListener);
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        tDropTargetProtocols.add(motifdndDropTargetProtocol);
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        dragProtocols = Collections.unmodifiableList(tDragSourceProtocols);
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        dropProtocols = Collections.unmodifiableList(tDropTargetProtocols);
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    }
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    static Iterator getDragSourceProtocols() {
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        return dragProtocols.iterator();
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    }
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    static Iterator getDropTargetProtocols() {
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        return dropProtocols.iterator();
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    }
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    /*
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     * Returns a XDragSourceProtocol whose name equals to the specified string
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     * or null if no such protocol is registered.
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     */
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    public static XDragSourceProtocol getDragSourceProtocol(String name) {
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        // Protocol name cannot be null.
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        if (name == null) {
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            return null;
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        }
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        Iterator dragProtocols = XDragAndDropProtocols.getDragSourceProtocols();
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        while (dragProtocols.hasNext()) {
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            XDragSourceProtocol dragProtocol =
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                (XDragSourceProtocol)dragProtocols.next();
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            if (dragProtocol.getProtocolName().equals(name)) {
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                return dragProtocol;
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            }
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        }
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        return null;
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    }
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    /*
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     * Returns a XDropTargetProtocol which name equals to the specified string
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     * or null if no such protocol is registered.
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     */
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    public static XDropTargetProtocol getDropTargetProtocol(String name) {
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        // Protocol name cannot be null.
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        if (name == null) {
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            return null;
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        }
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        Iterator dropProtocols = XDragAndDropProtocols.getDropTargetProtocols();
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        while (dropProtocols.hasNext()) {
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            XDropTargetProtocol dropProtocol =
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                (XDropTargetProtocol)dropProtocols.next();
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            if (dropProtocol.getProtocolName().equals(name)) {
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                return dropProtocol;
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            }
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        }
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        return null;
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    }
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}