Drag and Drop in JPanel having GridBagLayout

Hi,
I have a JPanel (longitudinal) which has labels with imageicons (actually they are created using javax.media package and other JAI packages, but for simplicity sake labels are good). These labels are arranged longitudinally one below the other.
I have to implement drag and drop for these labels. I should be able to change the order etc. of the labels using DnD. I have been able to do that successfully. From the mouse coordinattes when the mouse is released, i calculated the grid on the layout, and then add the component to the panel in the grid.
All is well, but it doesnt end well :-(
The problem I am having is that when i releaase the mouse button, the component gets added on top of the component that is already there in that grid.
Is there a way that they can adjust positions, and the other labels move one grid down when another one is added in the same grid??
I would really appreciate any help. I did a lot of work to come to this level, and now i have just run out of ideas.
Thanks a lot in advance!!
Sri.

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Drag and drop with JPanel

Hi there,
I have JPanel which contains label and image icon and i want to drag them out to another panel and droped there.
Is this really doable with swing.
Please share your thoughts with me
Thanks,
- Prashant

Thanks Daya,
but I want something which gives me the feel of drag and drop, Dragging is good with your code but when i do drop and that doesn't fall in desired area, i am expecting that to go back on that's previous locaton.
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Hi all,
Does anyone know if it is possible to program the drag-and-drop functionality from an ALV list to a table control? I would like to have this feature to let the user enter data on 1 screen. On the left part the user sees an ALV list and on the right the user sees the online transaction. I would like the user to enter data simply by drag and drop instead of having to enter the data.
Does someone has a sample program for this?
Regards,
Kris

Hi Kris
I can download the programs and send them to you, but you should give me your e-mail.
Anyway you can use Drag and Drop if you build your table control by ALV, i.e. ALV GRID.
But I'm using 4.7 and I don't know how class CL_GUI_ALV_GRID is in your release, I believe the release 4.6B is one of first release whit this class.
Max

Image drag and drop

Hi all,
I am writing a program, with 2 JPanels, the first one is with 4 images (JLabel), I need to drag the images and drop on second JPanel. When the image is dropped, it should also allow dragging to desired position in that JPanel(through MouseMotionListener).
I read a lot of examples about DnD, TransferHandler, I knew how to implement drag and drop between JPanels, but still have no idea how to implement both. Can anyone advise a brief idea how can I do.
Thank you so much....

Read this: http://forum.java.sun.com/thread.jsp?forum=57&thread=516990
It shouldn't be a big streach to convert the panel to an image.
If you have problems after trying this out, repost.

Outlook 2010 with 365 stripping attachments off of email that have been drag and dropped

In my office we just switched to 365 and since this I've noticed that roughly 1/3 to 1/2 of my email with drag and drop attachments are having those attachments stripped off.
Several times a day I send an email that has 6 attachments, mix of excel and pdf, and the excel called 'Checklist' I attach by drag and drop often get stripped off the instant I hit the Send button.
I will literally be looking at it, as one of 6 files, hit Send, and in my sent box there are only 5 files, the Checklist is gone! It's random; about 1/3 to 1/2 of them do this. Others make it through.
Please let me know if there is a fix to this? I'm having to resend attachments about 6 times a day now!

Hi,
Please send several test emails with attachments on OWA, check if this issue will occur.
If the issue is on client only, we can start Outlook in Safe Mode to test, this can eliminate the influence by 3rd-party add-ins:
Press Win + R, type "outlook.exe /safe" in the blank box, press Enter.
In Outlook Safe Mode, send several test emails with attachments to see if the problem will ever occur. If no, we may suspect the issue was caused by some add-ins, go to FILE -> Options -> Add-Ins to disable the suspicious add-ins to verify which one
caused the problem.
We can also test with a new profile to setup the account, a new profile will be a new environment for the account, we can check if the problem will occur with the new profile and you don't need to remove the old profile.
To create a new profile, go to Control Panel -> Mail -> Show Profiles -> Add.
Regards,
Melon Chen
TechNet Community Support
It's recommended to download and install
Configuration Analyzer Tool (OffCAT), which is developed by Microsoft Support teams. Once the tool is installed, you can run it at any time to scan for hundreds of known issues in Office
programs.

Implementing Drag and Drop

I would buy this product if the ajax features somehow
supported the implementaion of drag and drop in a way that was
simple to use.
I am dabbling in vb.net/asp.net and its version of ajax
tools. The support for drag and drop are not all that good at this
time.
I have even bought a book that had a chapter on it. It still
takes too much java hand written code to impliment it.
I also own dreamweaver MX. I use this product to do all my
web sites. They all are home stuff and fun stuff. My wife wants her
site to have the user be able to grab an object and drop it on a
specific location and have an event occur. In her case she wants an
animated GIF to fire.
I have turned to vb.net because i am a programmer and use
vb.net for application development. But!!! i am excited about DW
cs3. So my question is!!
Does DW CS3 Ajax tools provide a somewhat easy way to
impliment drag and drop without me having to write to much Java by
hand?
Thanx up front
jerryCic

>I would buy this product if the ajax features somehow
supported the
> implementaion of drag and drop in a way that was simple
to use.
Drag and Drop interfaces in javascript are nothing simple.
Don't expect any
magic wizards to help you with this.
There are a lot of AJAX/JS libraries. Many have DnD featuers,
but they'll
differ from library to library. you're going ot have to do a
lot of legwork
and takea look at them all.
I've used Scriptaculous in the past, but have found it
limiting. I'm going
to be looking at Jquery UI next.
> Does DW CS3 Ajax tools provide a somewhat easy way to
impliment drag and
> drop
> without me having to write to much Java by hand?
Java is not involved. JAVASCRIPT is.
DW does not do .net, so you you're going to do .net, you
should look at
Visual Studio as your main development IDE.
_Darrel

Weebly drag and drop editor will not load

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Nothing seems to work!! PSE 8 is supposed to be plug and play without having to mess with anything, get tech support or waste my time. Why then have I spent 3 evenings trying to make it work? I called Wal Mart who have a no refund policy on software. I HAVE HAD IT WITH THIS NONSENSE!!!
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Why am I having trouble importing vCards? I follow the Help Center instructions by dragging and dropping, but some don't sync into the cloud. And why can't I drag multiple vCards? I have over 4,000. Please tell me I don't have to do one at a time?

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carolinechx wrote:
i know the description may be a little bit too confusing
Mostly because you are not using any capital letters or paragraph returns and your post is difficult to read.

How to perform a Drag and Drop operation on JButton in a JPanel?

Hi guys,
There is a requirement to perform Drag and Drop operation on JButton component added to a JPanel Componet.
I could not get a proper solition to move the JButton component inside a JPanel component by drag and drop.
I request every one to provide some related information on moving a JButton component using Mouse operation.
Rajashekar.T

Here is some code for moving a window around the screen. The concept would be the same for moving a button around a panel:
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I'm trying to write an application with some simple drag and drop for JButtons between JPanels. Instead of going through all the hassle with DragSourceListener, DropTargetListener etc, I was thinking about a simple MouseMotionListener which sets a boolean to true when the user is dragging, and let the other panel add a MouseListener which listens for a MouseReleased.
The drag part is working fine, however the drop is not; in fact, it doesn't register the release. However, when I click and release, it seems to register the release.
Any suggestions? Thanks in advance.
Code for Card:
public Card extends JButton {
public static boolean drag = false;
     public Card(ImageIcon icon, ImageIcon fullicon)
          addMouseMotionListener(new DragMouseListener());
     class DragMouseListener extends MouseMotionAdapter
          public void mouseDragged(MouseEvent e)
               System.out.println("Drag register");
               drag = true;
}Code for the panel:
benchpanel.addMouseListener(new MouseAdapter() {
     public void mouseReleased(MouseEvent e)
          if (Card.drag && GUI.getInstance().findComponentAt(e.getPoint()) == GUI.getInstance().benchpanel)
               System.out.println("Drop registered");
          Card.drag = false;
});

Sorry for the double post. I had some experimenting done, and I come up with the following:
if (Card.drag && GUI.getInstance().benchpanel.getBounds().contains(e.getLocationOnScreen()))
     System.out.println("Drop registered");
}Here's the problem: The second part of the if-statement never seems to get true; if I write the following:
System.out.println(e.getPoint());
System.out.println(benchpanel.getBounds());
System.out.println(benchpanel.getBounds().contains(e.getPoint()));and i click in the upper left part of the JPanel, i get the following output:
java.awt.Point[x=9,y=13]
java.awt.Rectangle[x=210,y=420,width=400,height=108]
false- so for some reason, the bounds on the JPanel are totally messed up - any ideas on why?
Edited by: pg-robban on Apr 14, 2009 3:14 AM

Which Listener I should use if I drag and Drop an image/icon into a JPanel?

Dar Friends:
Happy new year.
I try to drag and Drop an image/icon into a JPanel, and hope I can immediately detect it after DND,
Which Listener I should use in this JPanel if I drag and Drop an image/icon into a JPanel??
Thanks

Thank camickr .
I can dnd an image into a JPanel called JPanelOld already, I hope to use another JPanel or JTree to listen to any Dropped Image in JPanelOld later on so I can take some action in another JPanel or JTree.
so what kind of Listener I should use for my purpose??
where to add this Listeners??
Happy New Year.

How to drag and drop an Image between two JPanels inside a Split Pane

I'm tring to do that, and my actual problem is as follows:
I drag the Image from the bottomPanel but I can't drop it in the topPanel, I'm using this classes:
import java.util.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.event.*;
import javax.swing.border.*;
import java.awt.dnd.*;
import java.awt.datatransfer.*;
import java.awt.image.*;
public class MoveableComponentsContainer extends JSplitPane {
     public DragSource dragSource;
     public DropTarget dropTarget;
public JPanel topPanel = new JPanel();
public JPanel bottomPanel = new JPanel();
     public int ancho;
public int alto;
public MoveableLabel lab1,lab2,lab3,lab4;
public Icon ico1, ico2,ico3,ico4;
private static BufferedImage buffImage = null; //buff image
     private static Point cursorPoint = new Point();
public int getMaximumDividerLocation() {
return ( ( int ) ( alto * .85 ) );
public int getMinimumDividerLocation() {
return( ( int ) ( alto * .85 ) );
     public MoveableComponentsContainer(int Weight, int Height ) {
alto = Height;
ancho = Weight;
setOrientation( VERTICAL_SPLIT);
setDividerSize(2);
getMaximumDividerLocation();
getMinimumDividerLocation();
setPreferredSize(new Dimension( (int) ( Weight * .99 ), (int) ( Height * .94 ) ) );
setDividerLocation( getMaximumDividerLocation() );
System.out.println( " getDividerLocation() = " + getDividerLocation() );
topPanel.setName("topPanel");
bottomPanel.setName("bottomPanel");
bottomPanel.setPreferredSize( new Dimension( (int) ( Weight * .99 ), (int) ( ( Height * .94 ) * .15 ) ) );
bottomPanel.setMaximumSize( new Dimension( (int) ( Weight * .99 ), (int) ( ( Height * .94 ) * .15 ) ) );
bottomPanel.setMinimumSize( new Dimension( (int) ( Weight * .99 ), (int) ( ( Height * .94 ) * .15 ) ) );
topPanel. setPreferredSize( new Dimension( (int) ( Weight * .99 ), (int) ( ( Height * .94 ) * .85 ) ) );
topPanel. setMaximumSize( new Dimension( (int) ( Weight * .99 ), (int) ( ( Height * .94 ) * .85 ) ) );
topPanel. setMinimumSize( new Dimension( (int) ( Weight * .99 ), (int) ( ( Height * .94 ) * .85 ) ) );
bottomPanel.setEnabled(true);
bottomPanel.setVisible(true);
bottomPanel.setBackground( new Color( 57,76,123 ) );
topPanel. setEnabled(true);
topPanel. setVisible(true);
topPanel. setBackground( new Color( 57,76,123 ) );
setBottomComponent( bottomPanel );
setTopComponent( topPanel );
setOneTouchExpandable( false );
bottomPanel.setBorder(BorderFactory.createTitledBorder("Drag and Drop Test"));
          setBorder(BorderFactory.createBevelBorder(BevelBorder.RAISED, Color.white, Color.gray));
bottomPanel.setLayout( new FlowLayout() );
topPanel.setLayout(new FlowLayout());
          addMoveableComponents();
     private void addMoveableComponents() {
ico1 = new ImageIcon( "/usr/local/installers/java/lll/DnD/switchm.gif");
lab1 = new MoveableLabel("Centrales", ico1, topPanel );
lab1.setName("labelOne");
bottomPanel.add( lab1 );
          lab2 = new MoveableLabel("Destinos", ico1, topPanel);
lab2.setName("labelTwo");
          bottomPanel.add( lab2 );
          lab3 = new MoveableLabel("Registros", ico1, topPanel );
lab3.setName("labelThree");
          bottomPanel.add( lab3 );
          lab4 = new MoveableLabel("Parametros", ico1, topPanel);
lab4.setName("labelFour");
          bottomPanel.add( lab4 );
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.event.*;
import javax.swing.border.*;
import java.awt.dnd.*;
import java.awt.datatransfer.*;
public class MoveableLabel extends JLabel implements Transferable {
final static int FILE = 0;
final static int STRING = 1;
final static int IMAGE = 2;
DataFlavor flavors[] = { DataFlavor.javaFileListFlavor,
DataFlavor.stringFlavor,
DataFlavor.imageFlavor };
public JPanel PanelDestino;
public JPanel PanelOrigen;
public DropTarget dropTarget;
public DropTargetListener dropTargetLis;
     private static final Border border = BorderFactory.createLineBorder(Color.black, 1);
     public MoveableLabel(String text, Icon ic, JPanel DestPanel) {
          super( text, ic, TRAILING);
PanelDestino = DestPanel;
          MouseEventForwarder forwarder = new MouseEventForwarder();
          addMouseListener(forwarder);
          addMouseMotionListener(forwarder);
          setBorder(border);
          setBounds(0,0,50,100);
          setOpaque(true);
setTransferHandler(new TransferHandler("text"));
setBackground( new Color( 57,76,123 ) );
public synchronized DataFlavor[] getTransferDataFlavors() {
     return flavors;
public boolean isDataFlavorSupported(DataFlavor flavor) {
boolean b = false;
b |= flavor.equals(flavors[ FILE ]);
b |= flavor.equals(flavors[STRING]);
b |= flavor.equals(flavors[ IMAGE]);
return (b);
public Object getTransferData(DataFlavor flavor) throws UnsupportedFlavorException, java.io.IOException {
return this;
     final class MouseEventForwarder extends MouseInputAdapter {
          public void mousePressed(MouseEvent e) {
               Container parent = getParent();
Container brother = (Container)PanelDestino;
System.out.println( "Parent 1 = " + parent.getName() );
System.out.println( "Destino 1 = " + brother.getName() );
JComponent c = (JComponent) e.getSource();
System.out.println( "getsource() = " + c.getName() );
TransferHandler th = c.getTransferHandler();
th.exportAsDrag( c, e, TransferHandler.COPY_OR_MOVE );
dropTarget = getDropTarget();
System.out.println( "dropTarget.getComponent().getName() = " + dropTarget.getComponent().getName() );
for ( int a=0; a < parent.getComponentCount(); a++ ) {
parent.getComponent( a ).setEnabled( false );
brother.setDropTarget( dropTarget );
System.out.println( "dropTarget.getComponent().getName() = " + dropTarget.getComponent().getName() );
          public void mouseReleased(MouseEvent e) {
               Container parent = getParent();
Container brother = PanelDestino;
System.out.println( "Parent 2 = " + parent.getName() );
System.out.println( "Destino 2 = " + PanelDestino.getName() );
parent.setEnabled( true );
brother.setEnabled( false );
for ( int a=0; a < parent.getComponentCount(); a++ ) {
parent.getComponent( a ).setEnabled( true );
import java.awt.*;
import javax.swing.*;
public class TestDragComponent extends JFrame {
     public TestDragComponent() {
super("TestDragComponent");
Toolkit tk = Toolkit.getDefaultToolkit();
Dimension dm = new Dimension();
dm = tk.getScreenSize();
System.out.println(dm.height);
System.out.println(dm.width );
Container cntn = getContentPane();
cntn.setFont(new Font("Helvetica", Font.PLAIN, 14));
cntn.add(new MoveableComponentsContainer(dm.width,dm.height));
          pack();
          setVisible(true);
     public static void main(String[] args) {
          new TestDragComponent();

Ok I found the answer to your problem. If you download the tutorial they have the code there it's in one folder. I hope this helps.
http://java.sun.com/docs/books/tutorial/

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movieClip_2.addEventListener(MouseEvent.MOUSE_DOWN, clickToDrag);
movieClip_3.addEventListener(MouseEvent.MOUSE_DOWN, clickToDrag);
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Your appear to have redundant coding assigning your listeners. What code are you trying to add/modify to make the couch function like the others?
this...
for(var i:uint=1; i<=numObjects; i++){
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     this["movieClip_"+String(i)].addEventListener(MouseEvent.MOUSE_UP, releaseToDrop);
currently does what this also does....
movieClip_1.addEventListener(MouseEvent.MOUSE_DOWN, clickToDrag);
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movieClip_3.addEventListener(MouseEvent.MOUSE_DOWN, clickToDrag);
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Thanks again.
Susan

Drag and Drop in JPanel having GridBagLayout

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