1 /*
   2  * Copyright (c) 2011, 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.lwawt.macosx;
  27 
  28 import java.awt.Component;
  29 import java.awt.peer.ComponentPeer;
  30 import java.awt.dnd.DropTarget;
  31 
  32 import sun.lwawt.LWComponentPeer;
  33 import sun.lwawt.PlatformWindow;
  34 
  35 
  36 public final class CDropTarget {
  37 
  38     Component        fComponent;
  39     ComponentPeer    fPeer;
  40     DropTarget        fDropTarget;
  41     private long    fNativeDropTarget;
  42 
  43     public static CDropTarget createDropTarget(DropTarget dropTarget, Component component, ComponentPeer peer) {
  44         return new CDropTarget(dropTarget, component, peer);
  45     }
  46 
  47     private CDropTarget(DropTarget dropTarget, Component component, ComponentPeer peer) {
  48         super();
  49 
  50         fDropTarget = dropTarget;
  51         fComponent = component;
  52         fPeer = peer;
  53 
  54         long nativePeer = CPlatformWindow.getNativeViewPtr(((LWComponentPeer) peer).getPlatformWindow());
  55         if (nativePeer == 0L) return; // Unsupported
  56 
  57         // Create native dragging destination:
  58         fNativeDropTarget = this.createNativeDropTarget(dropTarget, component, peer, nativePeer);
  59         if (fNativeDropTarget == 0) {
  60             throw new IllegalStateException("CDropTarget.createNativeDropTarget() failed.");
  61         }
  62     }
  63 
  64     public DropTarget getDropTarget() {
  65         return fDropTarget;
  66     }
  67 
  68     public void dispose() {
  69         // Release native dragging destination, if any:
  70         if (fNativeDropTarget != 0) {
  71             this.releaseNativeDropTarget(fNativeDropTarget);
  72             fNativeDropTarget = 0;
  73         }
  74     }
  75 
  76     protected native long createNativeDropTarget(DropTarget dropTarget, Component component, ComponentPeer peer, long nativePeer);
  77     protected native void releaseNativeDropTarget(long nativeDropTarget);
  78 }
--- EOF ---