jdk/src/solaris/classes/sun/awt/X11/XDragAndDropProtocols.java
changeset 2 90ce3da70b43
child 5506 202f599c92aa
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/src/solaris/classes/sun/awt/X11/XDragAndDropProtocols.java	Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,124 @@
+/*
+ * Copyright 2003-2007 Sun Microsystems, Inc.  All Rights Reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Sun designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Sun in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ */
+
+package sun.awt.X11;
+
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.Iterator;
+import java.util.List;
+
+/**
+ * This class is a registry for the supported drag and drop protocols.
+ *
+ * @since 1.5
+ */
+final class XDragAndDropProtocols {
+    private final static List dragProtocols;
+    private final static List dropProtocols;
+
+    public static final String XDnD = "XDnD";
+    public static final String MotifDnD = "MotifDnD";
+
+    static {
+        // Singleton listener for all drag source protocols.
+        XDragSourceProtocolListener dragSourceProtocolListener =
+            XDragSourceContextPeer.getXDragSourceProtocolListener();
+        // Singleton listener for all drop target protocols.
+        XDropTargetProtocolListener dropTargetProtocolListener =
+            XDropTargetContextPeer.getXDropTargetProtocolListener();
+
+        List tDragSourceProtocols = new ArrayList();
+        XDragSourceProtocol xdndDragSourceProtocol =
+            XDnDDragSourceProtocol.createInstance(dragSourceProtocolListener);
+        tDragSourceProtocols.add(xdndDragSourceProtocol);
+        XDragSourceProtocol motifdndDragSourceProtocol =
+            MotifDnDDragSourceProtocol.createInstance(dragSourceProtocolListener);
+        tDragSourceProtocols.add(motifdndDragSourceProtocol);
+
+        List tDropTargetProtocols = new ArrayList();
+        XDropTargetProtocol xdndDropTargetProtocol =
+            XDnDDropTargetProtocol.createInstance(dropTargetProtocolListener);
+        tDropTargetProtocols.add(xdndDropTargetProtocol);
+        XDropTargetProtocol motifdndDropTargetProtocol =
+            MotifDnDDropTargetProtocol.createInstance(dropTargetProtocolListener);
+        tDropTargetProtocols.add(motifdndDropTargetProtocol);
+
+        dragProtocols = Collections.unmodifiableList(tDragSourceProtocols);
+        dropProtocols = Collections.unmodifiableList(tDropTargetProtocols);
+    }
+
+    static Iterator getDragSourceProtocols() {
+        return dragProtocols.iterator();
+    }
+
+    static Iterator getDropTargetProtocols() {
+        return dropProtocols.iterator();
+    }
+
+    /*
+     * Returns a XDragSourceProtocol whose name equals to the specified string
+     * or null if no such protocol is registered.
+     */
+    public static XDragSourceProtocol getDragSourceProtocol(String name) {
+        // Protocol name cannot be null.
+        if (name == null) {
+            return null;
+        }
+
+        Iterator dragProtocols = XDragAndDropProtocols.getDragSourceProtocols();
+        while (dragProtocols.hasNext()) {
+            XDragSourceProtocol dragProtocol =
+                (XDragSourceProtocol)dragProtocols.next();
+            if (dragProtocol.getProtocolName().equals(name)) {
+                return dragProtocol;
+            }
+        }
+
+        return null;
+    }
+
+    /*
+     * Returns a XDropTargetProtocol which name equals to the specified string
+     * or null if no such protocol is registered.
+     */
+    public static XDropTargetProtocol getDropTargetProtocol(String name) {
+        // Protocol name cannot be null.
+        if (name == null) {
+            return null;
+        }
+
+        Iterator dropProtocols = XDragAndDropProtocols.getDropTargetProtocols();
+        while (dropProtocols.hasNext()) {
+            XDropTargetProtocol dropProtocol =
+                (XDropTargetProtocol)dropProtocols.next();
+            if (dropProtocol.getProtocolName().equals(name)) {
+                return dropProtocol;
+            }
+        }
+
+        return null;
+    }
+}