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1: /* DropTargetContext.java -- 2: Copyright (C) 2002, 2003, 2004 Free Software Foundation 3: 4: This file is part of GNU Classpath. 5: 6: GNU Classpath is free software; you can redistribute it and/or modify 7: it under the terms of the GNU General Public License as published by 8: the Free Software Foundation; either version 2, or (at your option) 9: any later version. 10: 11: GNU Classpath is distributed in the hope that it will be useful, but 12: WITHOUT ANY WARRANTY; without even the implied warranty of 13: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14: General Public License for more details. 15: 16: You should have received a copy of the GNU General Public License 17: along with GNU Classpath; see the file COPYING. If not, write to the 18: Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 19: 02110-1301 USA. 20: 21: Linking this library statically or dynamically with other modules is 22: making a combined work based on this library. Thus, the terms and 23: conditions of the GNU General Public License cover the whole 24: combination. 25: 26: As a special exception, the copyright holders of this library give you 27: permission to link this library with independent modules to produce an 28: executable, regardless of the license terms of these independent 29: modules, and to copy and distribute the resulting executable under 30: terms of your choice, provided that you also meet, for each linked 31: independent module, the terms and conditions of the license of that 32: module. An independent module is a module which is not derived from 33: or based on this library. If you modify this library, you may extend 34: this exception to your version of the library, but you are not 35: obligated to do so. If you do not wish to do so, delete this 36: exception statement from your version. */ 37: 38: package java.awt.dnd; 39: 40: import java.awt.Component; 41: import java.awt.datatransfer.DataFlavor; 42: import java.awt.datatransfer.Transferable; 43: import java.awt.datatransfer.UnsupportedFlavorException; 44: import java.io.IOException; 45: import java.io.Serializable; 46: import java.util.Arrays; 47: import java.util.List; 48: 49: /** 50: * @author Michael Koch (konqueror@gmx.de) 51: * @since 1.2 52: */ 53: public class DropTargetContext implements Serializable 54: { 55: static final long serialVersionUID = -634158968993743371L; 56: 57: /** @specnote According to the online documentation, this is 58: * protected, but in reality it is public. */ 59: public class TransferableProxy implements Transferable 60: { 61: protected boolean isLocal; 62: protected Transferable transferable; 63: 64: TransferableProxy (Transferable t, boolean local) 65: { 66: this.transferable = t; 67: this.isLocal = local; 68: } 69: 70: public DataFlavor[] getTransferDataFlavors () 71: { 72: return transferable.getTransferDataFlavors (); 73: } 74: 75: public boolean isDataFlavorSupported (DataFlavor flavor) 76: { 77: return transferable.isDataFlavorSupported (flavor); 78: } 79: 80: public Object getTransferData (DataFlavor flavor) 81: throws UnsupportedFlavorException, IOException 82: { 83: return transferable.getTransferData (flavor); 84: } 85: } 86: 87: private DropTarget dropTarget; 88: private int targetActions; 89: private java.awt.dnd.peer.DropTargetContextPeer dtcp; 90: 91: // package private 92: DropTargetContext (DropTarget dropTarget) 93: { 94: this.dropTarget = dropTarget; 95: } 96: 97: public DropTarget getDropTarget () 98: { 99: return dropTarget; 100: } 101: 102: public Component getComponent () 103: { 104: return dropTarget.getComponent (); 105: } 106: 107: public void addNotify (java.awt.dnd.peer.DropTargetContextPeer dtcp) 108: { 109: this.dtcp = dtcp; 110: } 111: 112: public void removeNotify () 113: { 114: this.dtcp = null; 115: } 116: 117: protected void setTargetActions (int actions) 118: { 119: targetActions = actions; 120: } 121: 122: protected int getTargetActions() 123: { 124: return targetActions; 125: } 126: 127: /** 128: * Signals that the drop is completed. 129: * 130: * @exception InvalidDnDOperationException If a drop is not outstanding. 131: */ 132: public void dropComplete (boolean success) 133: { 134: // FIXME: implement this 135: } 136: 137: protected void acceptDrag (int dragOperation) 138: { 139: // FIXME: implement this 140: } 141: 142: protected void rejectDrag () 143: { 144: // FIXME: implement this 145: } 146: 147: protected void acceptDrop (int dropOperation) 148: { 149: // FIXME: implement this 150: } 151: 152: protected void rejectDrop () 153: { 154: // FIXME: implement this 155: } 156: 157: protected DataFlavor[] getCurrentDataFlavors () 158: { 159: // FIXME: implement this 160: return null; 161: } 162: 163: protected List getCurrentDataFlavorsAsList () 164: { 165: return Arrays.asList (getCurrentDataFlavors ()); 166: } 167: 168: protected boolean isDataFlavorSupported (DataFlavor flavor) 169: { 170: return getCurrentDataFlavorsAsList ().contains (flavor); 171: } 172: 173: /** 174: * Return the <code>Transferable</code> operandof this operation. 175: * 176: * @exception InvalidDnDOperationException If a drag is not outstanding. 177: */ 178: protected Transferable getTransferable() throws InvalidDnDOperationException 179: { 180: // FIXME: implement this 181: return null; 182: } 183: 184: protected Transferable createTransferableProxy(Transferable t, boolean local) 185: { 186: return new TransferableProxy (t, local); 187: } 188: } // class DropTargetContext
GNU Classpath (0.20) |