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Java > Open Source Codes > it > businesslogic > ireport > gui > DTListener


1 /*
2  * Copyright (C) 2005 - 2006 JasperSoft Corporation. All rights reserved.
3  * http://www.jaspersoft.com.
4  *
5  * Unless you have purchased a commercial license agreement from JasperSoft,
6  * the following license terms apply:
7  *
8  * This program is free software; you can redistribute it and/or modify
9  * it under the terms of the GNU General Public License version 2 as published by
10  * the Free Software Foundation.
11  *
12  * This program is distributed WITHOUT ANY WARRANTY; and without the
13  * implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
14  * See the GNU General Public License for more details.
15  *
16  * You should have received a copy of the GNU General Public License
17  * along with this program; if not, see http://www.gnu.org/licenses/gpl.txt
18  * or write to:
19  *
20  * Free Software Foundation, Inc.,
21  * 59 Temple Place - Suite 330,
22  * Boston, MA USA 02111-1307
23  *
24  *
25  *
26  *
27  * DTListener.java
28  *
29  * Created on June 1, 2006, 11:32 AM
30  *
31  */
32
33 package it.businesslogic.ireport.gui;
34 import java.awt.datatransfer.DataFlavor JavaDoc;
35 import java.awt.datatransfer.Transferable JavaDoc;
36 import java.awt.dnd.DnDConstants JavaDoc;
37 import java.awt.dnd.DropTarget JavaDoc;
38 import java.awt.dnd.DropTargetContext JavaDoc;
39 import java.awt.dnd.DropTargetDragEvent JavaDoc;
40 import java.awt.dnd.DropTargetDropEvent JavaDoc;
41 import java.awt.dnd.DropTargetEvent JavaDoc;
42 import java.awt.dnd.DropTargetListener JavaDoc;
43 /**
44  *
45  * @author gtoffoli
46  */
47   /**
48    * DTListener
49    * a listener that tracks the state of the operation
50    * @see java.awt.dnd.DropTargetListener
51    * @see java.awt.dnd.DropTarget
52    */
53  public class DTListener implements DropTargetListener JavaDoc {
54
55
56     /**
57      * start "drag under" feedback on component
58      * invoke acceptDrag or rejectDrag based on isDragOk
59      */
60     public void dragEnter(DropTargetDragEvent JavaDoc e) {
61       e.acceptDrag(e.getDropAction());
62     }
63
64     /**
65      * continue "drag under" feedback on component
66      * invoke acceptDrag or rejectDrag based on isDragOk
67      */
68     public void dragOver(DropTargetDragEvent JavaDoc e) {
69       e.acceptDrag(e.getDropAction());
70     }
71     
72     public void dropActionChanged(DropTargetDragEvent JavaDoc e) {
73     }
74     
75     public void dragExit(DropTargetEvent JavaDoc e) {
76     }
77
78     /**
79      * perform action from getSourceActions on
80      * the transferrable
81      * invoke acceptDrop or rejectDrop
82      * invoke dropComplete
83      * if its a local (same JVM) transfer, use StringTransferable.localStringFlavor
84      * find a match for the flavor
85      * check the operation
86      * get the transferable according to the chosen flavor
87      * do the transfer
88      */
89     public void drop(DropTargetDropEvent JavaDoc dtde) {
90         try {
91            
92             DropTargetContext JavaDoc context = dtde.getDropTargetContext();
93
94             Transferable JavaDoc tr = dtde.getTransferable();
95             if (tr.isDataFlavorSupported (DataFlavor.javaFileListFlavor))
96             {
97                 dtde.acceptDrop (
98                         DnDConstants.ACTION_COPY_OR_MOVE);
99                 java.util.List JavaDoc fileList = (java.util.List JavaDoc)tr.getTransferData(DataFlavor.javaFileListFlavor);
100
101                 MainFrame.getMainInstance().openFiles(fileList);
102             }
103            
104             context.dropComplete(true);
105         } catch (Exception JavaDoc ex)
106         {
107             ex.printStackTrace();
108         }
109     }
110     
111   }
112
113
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