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DroppableList.java

package edu.ksu.cis.bandera.pdgslicer.dependency;

import java.awt.*;
import java.awt.dnd.*;
import java.awt.datatransfer.*;
import javax.swing.*;
import java.io.*;
import java.util.*;
import java.util.List;
public abstract class DroppableList extends JList implements DropTargetListener {
    DropTarget dropTarget;
    CriterionViewer criterionViewer;
  public DroppableList() {
    dropTarget = new DropTarget (this, this);
    setModel(new DefaultListModel());
  }  
public abstract void dragEnter(DropTargetDragEvent dropTargetDragEvent);
/*
{
    System.out.println("drag enter drop");
    dropTargetDragEvent.acceptDrag(DnDConstants.ACTION_COPY_OR_MOVE);
}
*/
  public void dragExit (DropTargetEvent dropTargetEvent) {
     // System.out.println("drag exit drop");
  }  
  public void dragOver (DropTargetDragEvent dropTargetDragEvent) {
     // System.out.println("drap over drop");
  }  
public abstract void drop(DropTargetDropEvent dropTargetDropEvent);
/*
7{
    try {
        //Transferable tr = dropTargetDropEvent.getTransferable();

        Transferable tr = DraggableTree.currentDraggingTreeNode;
        if (tr.isDataFlavorSupported(TransferableTreeNode.DEFAULT_MUTABLE_TREENODE_FLAVOR)) {
            dropTargetDropEvent.acceptDrop(DnDConstants.ACTION_COPY_OR_MOVE);
            Object userObject = tr.getTransferData(TransferableTreeNode.DEFAULT_MUTABLE_TREENODE_FLAVOR);
            ((DefaultListModel) getModel()).addElement(userObject);
            dropTargetDropEvent.getDropTargetContext().dropComplete(true);
        } else
            if (tr.isDataFlavorSupported(DataFlavor.stringFlavor)) {
                dropTargetDropEvent.acceptDrop(DnDConstants.ACTION_COPY_OR_MOVE);
                String string = (String) tr.getTransferData(DataFlavor.stringFlavor);
                ((DefaultListModel) getModel()).addElement(string);
                dropTargetDropEvent.getDropTargetContext().dropComplete(true);
            } else
                if (tr.isDataFlavorSupported(DataFlavor.plainTextFlavor)) {
                    dropTargetDropEvent.acceptDrop(DnDConstants.ACTION_COPY_OR_MOVE);
                    Object stream = tr.getTransferData(DataFlavor.plainTextFlavor);
                    if (stream instanceof InputStream) {
                        InputStreamReader isr = new InputStreamReader((InputStream) stream);
                        BufferedReader reader = new BufferedReader(isr);
                        String line;
                        while ((line = reader.readLine()) != null) {
                            ((DefaultListModel) getModel()).addElement(line);
                        }
                        dropTargetDropEvent.getDropTargetContext().dropComplete(true);
                    } else
                        if (stream instanceof Reader) {
                            BufferedReader reader = new BufferedReader((Reader) stream);
                            String line;
                            while ((line = reader.readLine()) != null) {
                                ((DefaultListModel) getModel()).addElement(line);
                            }
                            dropTargetDropEvent.getDropTargetContext().dropComplete(true);
                        } else {
                            System.err.println("Unknown type: " + stream.getClass());
                            dropTargetDropEvent.rejectDrop();
                        }
                } else
                    if (tr.isDataFlavorSupported(DataFlavor.javaFileListFlavor)) {
                        dropTargetDropEvent.acceptDrop(DnDConstants.ACTION_COPY_OR_MOVE);
                        List fileList = (List) tr.getTransferData(DataFlavor.javaFileListFlavor);
                        Iterator iterator = fileList.iterator();
                        while (iterator.hasNext()) {
                            File file = (File) iterator.next();
                            Hashtable hashtable = new Hashtable();
                            hashtable.put("name", file.getName());
                            hashtable.put("url", file.toURL().toString());
                            ((DefaultListModel) getModel()).addElement(hashtable);
                        }
                        dropTargetDropEvent.getDropTargetContext().dropComplete(true);
                    } else {
                        System.err.println("Rejected");
                        dropTargetDropEvent.rejectDrop();
                    }
    } catch (IOException io) {
        io.printStackTrace();
        dropTargetDropEvent.rejectDrop();
    } catch (UnsupportedFlavorException ufe) {
        ufe.printStackTrace();
        dropTargetDropEvent.rejectDrop();
    }
}
*/
  public void dropActionChanged (DropTargetDragEvent dropTargetDragEvent) {
      System.out.println("dropActionChanged");
  }  
/**
 * Insert the method's description here.
 * Creation date: (00-11-21 11:45:59)
 * @param cv edu.ksu.cis.bandera.pdgslicer.dependency.CriterionViewer
 */
void setCriterionViewer(CriterionViewer cv) {
    criterionViewer = cv;
}
}

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