/*
* Copyright (c) 2004-2007 by Michael Connor. All Rights Reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* o Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* o Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* o Neither the name of FormLayoutBuilder or Michael Connor nor the names of
* its contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/**
*
*/
package org.mlc.swing.layout;
import java.awt.dnd.DnDConstants;
import java.awt.dnd.DragGestureEvent;
import java.awt.dnd.DragGestureListener;
import java.awt.dnd.DragSource;
import java.awt.dnd.DragSourceListener;
import java.awt.event.MouseEvent;
import javax.swing.JList;
import javax.swing.ListModel;
import javax.swing.ListSelectionModel;
public class DndList extends JList implements DragSourceListener,
DragGestureListener {
/**
*
*/
private final FormEditor editor;
private static final long serialVersionUID = 1L;
protected DragSource fDragSource = null;
public DndList(FormEditor editor, ListModel listModel) {
super(listModel);
this.editor = editor;
fDragSource = new DragSource();
this.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
// it is very important that autoscrolls be set to false. i
// spent a lot of time tracking down a bug where there was
// very strange behavior involving selections and dragging with
// this list. as far as i can tell, the autoscroller was
// generating phantom events which i believe is what it is
// designed to do. i don't have an explanation for how this
// should be done but i can say if this line of code is not
// present then bad things will happen.
this.editor.setAutoscrolls(false);
fDragSource.createDefaultDragGestureRecognizer(this,
DnDConstants.ACTION_MOVE, this);
}
public void dragDropEnd(java.awt.dnd.DragSourceDropEvent dragSourceDropEvent) {
}
public void dragEnter(java.awt.dnd.DragSourceDragEvent dragSourceDragEvent) {
}
public void dragExit(java.awt.dnd.DragSourceEvent dragSourceEvent) {
}
public void dragOver(java.awt.dnd.DragSourceDragEvent dragSourceDragEvent) {
}
public void dropActionChanged(
java.awt.dnd.DragSourceDragEvent dragSourceDragEvent) {
}
public void dragGestureRecognized(DragGestureEvent event) {
int dragIndex = locationToIndex(event.getDragOrigin());
if (dragIndex >= 0) {
Object draggingComponent = this.getModel().getElementAt(dragIndex);
event.startDrag(java.awt.dnd.DragSource.DefaultCopyDrop,
new TransferableWrapper(draggingComponent), this);
}
}
public String getToolTipText(MouseEvent evt) {
// return a tooltip for the specific entry in the list
// Get item index
int index = locationToIndex(evt.getPoint());
if (index == -1) {
return "";
}
// Get item
Object o = this.getModel().getElementAt(index);
if (o instanceof ComponentDef) {
ComponentDef thisItem = (ComponentDef) o;
if (thisItem != null) {
return thisItem.getDescription();
}
}
return "";
}
public void drop(java.awt.dnd.DropTargetDropEvent e) {
}
}