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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: protected class TransferableProxy implements Transferable 58: { 59: protected boolean isLocal; 60: protected Transferable transferable; 61: 62: TransferableProxy (Transferable t, boolean local) 63: { 64: this.transferable = t; 65: this.isLocal = local; 66: } 67: 68: public DataFlavor[] getTransferDataFlavors () 69: { 70: return transferable.getTransferDataFlavors (); 71: } 72: 73: public boolean isDataFlavorSupported (DataFlavor flavor) 74: { 75: return transferable.isDataFlavorSupported (flavor); 76: } 77: 78: public Object getTransferData (DataFlavor flavor) 79: throws UnsupportedFlavorException, IOException 80: { 81: return transferable.getTransferData (flavor); 82: } 83: } 84: 85: private DropTarget dropTarget; 86: private int targetActions; 87: private java.awt.dnd.peer.DropTargetContextPeer dtcp; 88: 89: // package private 90: DropTargetContext (DropTarget dropTarget) 91: { 92: this.dropTarget = dropTarget; 93: } 94: 95: public DropTarget getDropTarget () 96: { 97: return dropTarget; 98: } 99: 100: public Component getComponent () 101: { 102: return dropTarget.getComponent (); 103: } 104: 105: public void addNotify (java.awt.dnd.peer.DropTargetContextPeer dtcp) 106: { 107: this.dtcp = dtcp; 108: } 109: 110: public void removeNotify () 111: { 112: this.dtcp = null; 113: } 114: 115: protected void setTargetActions (int actions) 116: { 117: targetActions = actions; 118: } 119: 120: protected int getTargetActions() 121: { 122: return targetActions; 123: } 124: 125: /** 126: * Signals that the drop is completed. 127: * 128: * @exception InvalidDnDOperationException If a drop is not outstanding. 129: */ 130: public void dropComplete (boolean success) 131: { 132: // FIXME: implement this 133: } 134: 135: protected void acceptDrag (int dragOperation) 136: { 137: // FIXME: implement this 138: } 139: 140: protected void rejectDrag () 141: { 142: // FIXME: implement this 143: } 144: 145: protected void acceptDrop (int dropOperation) 146: { 147: // FIXME: implement this 148: } 149: 150: protected void rejectDrop () 151: { 152: // FIXME: implement this 153: } 154: 155: protected DataFlavor[] getCurrentDataFlavors () 156: { 157: // FIXME: implement this 158: return null; 159: } 160: 161: protected List getCurrentDataFlavorsAsList () 162: { 163: return Arrays.asList (getCurrentDataFlavors ()); 164: } 165: 166: protected boolean isDataFlavorSupported (DataFlavor flavor) 167: { 168: return getCurrentDataFlavorsAsList ().contains (flavor); 169: } 170: 171: /** 172: * Return the <code>Transferable</code> operandof this operation. 173: * 174: * @exception InvalidDnDOperationException If a drag is not outstanding. 175: */ 176: protected Transferable getTransferable() throws InvalidDnDOperationException 177: { 178: // FIXME: implement this 179: return null; 180: } 181: 182: protected Transferable createTransferableProxy(Transferable t, boolean local) 183: { 184: return new TransferableProxy (t, local); 185: } 186: } // class DropTargetContext
GNU Classpath (0.91) |