DragImage in drag-and-drop
I've managed to get drag-and-drop working using the file-list array approach example pointed to on this forum. What I can't get to work, however, is a dragImage to show feedback of what is being dragged into the main canvas. In actual fact, the drag operation fails silently if I even try to add a dragImage.
Is this a known issue that isn't currently supported, or has anyone managed to get this to work?
I'm targeting Illustrator CS5 on the Mac.
Thanks
Richard
i can't answer that specifically because i don't know the
rationale you should use to set depths.
but, in general, you can store all the depths in an array
(using getDepth() and iterating all your display objects), sort()
that array and create another array of your objects.
then use a custom sort on your object array using the
criteria that suits your project and finally iterate through your
object array assigning depths (using swapDepths() ) from the sorted
depth array.
Similar Messages
-
Must click then click and drag for JTable Drag and Drop
Hi All,
I've been using Java 1.4 to drag and drop data between two tables in our application. Basically I need to drag the data from individual rows of the source table and insert it into one of the cells in the new table. This works absolutely fine and has made a huge improvement to this portion of our app. I've included example source code below that does a similar thing by transferring data from one table and inserting it into another (it's quite big and also not as well done as the example in our real app but unfortunately I can't send the source for that).
The thing I've noticed though is that in order to start dragging data I need to click to select it and then press and hold the mouse button to start dragging, whereas under W**dows and just about every other OS you can just press and hold and start dragging straight away. If you try this with a JTable though it just changes the rows you have selected so the drag and drop works but feels a bit clunky and amateurish. I'd like to do something about this such that it works like Windows Explorer (or similar) where you can just press the mouse button and start dragging.
Any help would be greatly appreciated - and if anybody finds the code useful you're more than welcome to it. Note that the business end of this is CustomTransferHandler.java - this will show you how to insert data at a specific position in a JTable, it's a bit of a faff but not too bad once you've got it sussed.
Thanks,
Bart Read
===============================================================
TestFrame.java
* TestFrame.java
* Created on October 21, 2002, 4:59 PM
import java.awt.*;
import java.awt.datatransfer.*;
import java.awt.dnd.*;
import java.awt.event.*;
import java.util.TooManyListenersException;
import javax.swing.*;
* @author readb
public class TestFrame extends javax.swing.JFrame
private static final String [] NAMES = {
"John", "Geoff", "Madeleine", "Maria", "Flanders",
"Homer", "Marge", "Bart", "Lisa", "Weird Baby" };
private JTable source;
private JTable dest;
private MyTableModel sourceModel;
private MyTableModel destModel;
private Clipboard clipboard;
/** Creates a new instance of TestFrame */
public TestFrame()
clipboard = getToolkit().getSystemClipboard();
Container c = getContentPane();
c.setLayout( new BorderLayout( 40, 40 ) );
source = new MyJTable();
sourceModel = new MyTableModel();
source.setModel( sourceModel );
source.setDragEnabled( true );
CustomTransferHandler handler = new CustomTransferHandler( "Source handler" );
source.setTransferHandler( handler );
try
source.getDropTarget().addDropTargetListener( handler );
catch ( TooManyListenersException tmle )
tmle.printStackTrace();
dest = new MyJTable();
destModel = new MyTableModel();
dest.setModel( destModel );
dest.setDragEnabled( true );
handler = new CustomTransferHandler( "Dest handler" );
dest.setTransferHandler( handler );
try
dest.getDropTarget().addDropTargetListener( handler );
catch ( TooManyListenersException tmle )
tmle.printStackTrace();
c.add( new JScrollPane( source ), BorderLayout.WEST );
c.add( new JScrollPane( dest ), BorderLayout.EAST );
populate();
private void populate( MyTableModel model )
for ( int index = 0; index < NAMES.length; ++index )
model.setRow( index, new DataRow( index + 1, NAMES[ index ] ) );
private void populate()
populate( sourceModel );
populate( destModel );
public static void main( String [] args )
TestFrame app = new TestFrame();
app.addWindowListener(
new WindowAdapter() {
public void windowClosing( WindowEvent we )
System.exit( 0 );
app.pack();
app.setSize( 1000, 600 );
app.show();
private class MyJTable extends JTable
public boolean getScrollableTracksViewportHeight()
Component parent = getParent();
if (parent instanceof JViewport)
return parent.getHeight() > getPreferredSize().height;
return false;
}=====================================================================
MyTableModel.java
* MyTableModel.java
* Created on October 21, 2002, 4:43 PM
import java.util.ArrayList;
* @author readb
public class MyTableModel extends javax.swing.table.AbstractTableModel
private static final int NUMBER = 0;
private static final int NAME = 1;
private static final String [] COLUMN_HEADINGS = { "Number", "Name" };
private ArrayList data;
/** Creates a new instance of MyTableModel */
public MyTableModel()
super();
data = new ArrayList();
public int getColumnCount()
return COLUMN_HEADINGS.length;
public String getColumnName( int index )
return COLUMN_HEADINGS[ index ];
public Class getColumnClass( int index )
switch ( index )
case NUMBER:
return Integer.class;
case NAME:
return String.class;
default:
throw new IllegalArgumentException( "Illegal column index: " + index );
public int getRowCount()
return ( null == data ? 0 : data.size() );
public Object getValueAt( int row, int column )
DataRow dataRow = ( DataRow ) data.get( row );
switch ( column )
case NUMBER:
return new Integer( dataRow.getNumber() );
case NAME:
return dataRow.getName();
default:
throw new IllegalArgumentException( "Illegal column index: " + column );
public void addRow( DataRow row )
int rowIndex = data.size();
data.add( row );
fireTableRowsInserted( rowIndex, rowIndex );
public void addRows( DataRow [] rows )
int firstRow = data.size();
for ( int index = 0; index < rows.length; ++index )
data.add( rows[ index ] );
fireTableRowsInserted( firstRow, data.size() - 1 );
public void setRow( int index, DataRow row )
if ( index == data.size() )
data.add( row );
else
data.set( index, row );
fireTableRowsUpdated( index, index );
public void insertRows( int index, DataRow [] rows )
for ( int rowIndex = rows.length - 1; rowIndex >= 0; --rowIndex )
data.add( index, rows[ rowIndex ] );
fireTableRowsInserted( index, index + rows.length - 1 );
public DataRow getRow( int index )
return ( DataRow ) data.get( index );
public DataRow removeRow( int index )
DataRow retVal = ( DataRow ) data.remove( index );
fireTableRowsDeleted( index, index );
return retVal;
public boolean removeRow( DataRow row )
int index = data.indexOf( row );
boolean retVal = data.remove( row );
fireTableRowsDeleted( index, index );
return retVal;
public void removeRows( DataRow [] rows )
for ( int index = 0; index < rows.length; ++index )
data.remove( rows[ index ] );
fireTableDataChanged();
}=====================================================================
DataRow.java
* DataRow.java
* Created on October 21, 2002, 4:41 PM
import java.io.Serializable;
* @author readb
public class DataRow implements Serializable
private int number;
private String name;
/** Creates a new instance of DataRow */
public DataRow( int number, String name )
this.number = number;
this.name = name;
public int getNumber()
return number;
public String getName()
return name;
public String toString()
return String.valueOf( number ) + ": " + name;
}======================================================================
CustomTransferHandler.java
* CustomTransferHandler.java
* Created on October 22, 2002, 8:36 AM
import java.awt.*;
import java.awt.datatransfer.Clipboard;
import java.awt.datatransfer.ClipboardOwner;
import java.awt.datatransfer.DataFlavor;
import java.awt.datatransfer.Transferable;
import java.awt.datatransfer.UnsupportedFlavorException;
import java.awt.dnd.*;
import java.awt.event.InputEvent;
import java.io.IOException;
import java.util.Arrays;
import javax.swing.Icon;
import javax.swing.ImageIcon;
import javax.swing.JComponent;
import javax.swing.JTable;
import javax.swing.TransferHandler;
* @author readb
public class CustomTransferHandler
extends TransferHandler
implements Transferable, ClipboardOwner, DropTargetListener
public static final DataFlavor ROW_ARRAY_FLAVOR = new DataFlavor( DataRow[].class, "Multiple rows of data" );
private String name;
private ImageIcon myIcon;
private DataRow [] data;
private boolean clipboardOwner = false;
private int rowIndex = -1;
/** Creates a new instance of CustomTransferHandler */
public CustomTransferHandler( String name )
this.name = name;
public boolean canImport( JComponent comp, DataFlavor [] transferFlavors )
System.err.println( "CustomTransferHandler::canImport" );
if ( comp instanceof JTable && ( ( JTable ) comp ).getModel() instanceof MyTableModel )
for ( int index = 0; index < transferFlavors.length; ++index )
if ( ! transferFlavors[ index ].equals( ROW_ARRAY_FLAVOR ) )
return false;
return true;
else
return false;
protected Transferable createTransferable( JComponent c )
System.err.println( "CustomTransferHandler::createTransferable" );
if ( ! ( c instanceof JTable ) || ! ( ( ( JTable ) c ).getModel() instanceof MyTableModel ) )
return null;
this.data = null;
JTable table = ( JTable ) c;
MyTableModel model = ( MyTableModel ) table.getModel();
Clipboard cb = table.getToolkit().getSystemClipboard();
cb.setContents( this, this );
clipboardOwner = true;
int [] selectedRows = table.getSelectedRows();
Arrays.sort( selectedRows );
data = new DataRow[ selectedRows.length ];
for ( int index = 0; index < data.length; ++index )
data[ index ] = model.getRow( selectedRows[ index ] );
return this;
public void exportAsDrag( JComponent comp, InputEvent e, int action )
super.exportAsDrag( comp, e, action );
Clipboard cb = comp.getToolkit().getSystemClipboard();
cb.setContents( this, this );
protected void exportDone( JComponent source, Transferable data, int action )
System.err.println( "CustomTransferHandler::exportDone" );
if ( TransferHandler.MOVE == action && source instanceof JTable && ( ( JTable ) source ).getModel() instanceof MyTableModel )
JTable table = ( JTable ) source;
MyTableModel model = ( MyTableModel ) table.getModel();
int [] selected = table.getSelectedRows();
for ( int index = selected.length - 1; index >= 0; --index )
model.removeRow( selected[ index ] );
public void exportToClipboard( JComponent comp, Clipboard clip, int action )
System.err.println( "CustomTransferHandler::exportToClipboard" );
public int getSourceActions( JComponent c )
System.err.println( "CustomTransferHandler::getSourceActions" );
if ( ( c instanceof JTable ) && ( ( JTable ) c ).getModel() instanceof MyTableModel )
return MOVE;
else
return NONE;
* I've commented this out because it doesn't appear to work in any case.
* The image isn't null but as far as I can tell this method is never
* invoked.
// public Icon getVisualRepresentation( Transferable t )
// System.err.println( "CustomTransferHandler::getVisualRepresentation" );
// if ( t instanceof CustomTransferHandler )
// if ( null == myIcon )
// try
// myIcon = new ImageIcon( getClass().getClassLoader().getResource( "dragimage.gif" ) );
// catch ( Exception e )
// System.err.println( "CustomTransferHandler::getVisualRepresentation: exception loading image" );
// e.printStackTrace();
// if ( null == myIcon )
// System.err.println( "CustomTransferHandler::getVisualRepresentation: myIcon is still NULL" );
// return myIcon;
// else
// return null;
public boolean importData( JComponent comp, Transferable t )
System.err.println( "CustomTransferHandler::importData" );
super.importData( comp, t );
if ( ! ( comp instanceof JTable ) )
return false;
if ( ! ( ( ( JTable ) comp ).getModel() instanceof MyTableModel ) )
return false;
if ( clipboardOwner )
return false;
if ( !t.isDataFlavorSupported( ROW_ARRAY_FLAVOR ) )
return false;
try
data = ( DataRow [] ) t.getTransferData( ROW_ARRAY_FLAVOR );
return true;
catch ( IOException ioe )
data = null;
return false;
catch ( UnsupportedFlavorException ufe )
data = null;
return false;
public Object getTransferData(DataFlavor flavor) throws UnsupportedFlavorException, IOException
System.err.println( "MyTransferable::getTransferData" );
if ( flavor.equals( ROW_ARRAY_FLAVOR ) )
return data;
else
throw new UnsupportedFlavorException( flavor );
public DataFlavor[] getTransferDataFlavors()
System.err.println( "MyTransferable::getTransferDataFlavors" );
DataFlavor [] flavors = new DataFlavor[ 1 ];
flavors[ 0 ] = ROW_ARRAY_FLAVOR;
return flavors;
public boolean isDataFlavorSupported( DataFlavor flavor )
System.err.println( "MyTransferable::isDataFlavorSupported" );
return flavor.equals( ROW_ARRAY_FLAVOR );
public void lostOwnership( Clipboard clipboard, Transferable transferable )
clipboardOwner = false;
/** Called while a drag operation is ongoing, when the mouse pointer enters
* the operable part of the drop site for the <code>DropTarget</code>
* registered with this listener.
* @param dtde the <code>DropTargetDragEvent</code>
public void dragEnter(DropTargetDragEvent dtde)
/** Called while a drag operation is ongoing, when the mouse pointer has
* exited the operable part of the drop site for the
* <code>DropTarget</code> registered with this listener.
* @param dte the <code>DropTargetEvent</code>
public void dragExit(DropTargetEvent dte)
/** Called when a drag operation is ongoing, while the mouse pointer is still
* over the operable part of the drop site for the <code>DropTarget</code>
* registered with this listener.
* @param dtde the <code>DropTargetDragEvent</code>
public void dragOver(DropTargetDragEvent dtde)
/** Called when the drag operation has terminated with a drop on
* the operable part of the drop site for the <code>DropTarget</code>
* registered with this listener.
* <p>
* This method is responsible for undertaking
* the transfer of the data associated with the
* gesture. The <code>DropTargetDropEvent</code>
* provides a means to obtain a <code>Transferable</code>
* object that represents the data object(s) to
* be transfered.<P>
* From this method, the <code>DropTargetListener</code>
* shall accept or reject the drop via the
* acceptDrop(int dropAction) or rejectDrop() methods of the
* <code>DropTargetDropEvent</code> parameter.
* <P>
* Subsequent to acceptDrop(), but not before,
* <code>DropTargetDropEvent</code>'s getTransferable()
* method may be invoked, and data transfer may be
* performed via the returned <code>Transferable</code>'s
* getTransferData() method.
* <P>
* At the completion of a drop, an implementation
* of this method is required to signal the success/failure
* of the drop by passing an appropriate
* <code>boolean</code> to the <code>DropTargetDropEvent</code>'s
* dropComplete(boolean success) method.
* <P>
* Note: The data transfer should be completed before the call to the
* <code>DropTargetDropEvent</code>'s dropComplete(boolean success) method.
* After that, a call to the getTransferData() method of the
* <code>Transferable</code> returned by
* <code>DropTargetDropEvent.getTransferable()</code> is guaranteed to
* succeed only if the data transfer is local; that is, only if
* <code>DropTargetDropEvent.isLocalTransfer()</code> returns
* <code>true</code>. Otherwise, the behavior of the call is
* implementation-dependent.
* <P>
* @param dtde the <code>DropTargetDropEvent</code>
public void drop(DropTargetDropEvent dtde)
System.err.println( "CustomTransferHandler::drop" );
Component c = dtde.getDropTargetContext().getDropTarget().getComponent();
if ( ! ( c instanceof JComponent ) )
dtde.rejectDrop();
return;
JComponent comp = ( JComponent ) c;
if ( ! ( c instanceof JTable ) || ! ( ( ( JTable ) c ).getModel() instanceof MyTableModel ) )
dtde.rejectDrop();
return;
dtde.acceptDrop( TransferHandler.MOVE );
// THIS is such a mess -- you can't do the following because
// getTransferable() throws an (undocumented) exception - what's that
// all about.
// Transferable t = dtde.getTransferable();
// if ( !t.isDataFlavourSupported( ROW_ARRAY_FLAVOR ) )
// dtde.rejectDrop();
// return false;
// TransferHandler handler = comp.getTransferHandler();
// if ( null == handler || ! handler.importData( comp, t ) )
// dtde.rejectDrop();
// return;
Point p = dtde.getLocation();
JTable table = ( JTable ) comp;
rowIndex = table.rowAtPoint( p );
// So you have to do this instead and use the data that's been
// stored in the data member via import data. Total mess.
if ( null == data )
dtde.rejectDrop();
return;
MyTableModel model = ( MyTableModel ) table.getModel();
if ( rowIndex == -1 )
model.addRows( data );
else
model.insertRows( rowIndex, data );
dtde.acceptDrop( TransferHandler.MOVE );
/** Called if the user has modified
* the current drop gesture.
* <P>
* @param dtde the <code>DropTargetDragEvent</code>
public void dropActionChanged(DropTargetDragEvent dtde)
}Hi again,
Well I've tried using the MouseListener / MouseMotionListener approach but it doesn't quite seem to work, although it does get the events correctly. I think the reason is that it doesn't interact correctly with the Java DnD machinery which is something that V.V hinted at. It's something that I may need to look into if / when I have more time available.
I have to say though that I haven't had any problems with scrollbars - we're making fairly heavy use of large tables and if you drag over a table with a scroll bar and move to the top or bottom then it scrolls as you would expect and allows you to drop the data where you like. For this situation I've used pretty much the same approach as for the toy example above except that I've implemented separate source and destination TransferHandlers (the source table is read-only, and it really doesn't make sense to allow people to drag from the destination table so I've essentially split the functionality of the example handler down the middle).
I'm not actually particularly in favour of messing too much with the mechanics of DnD, more because of lack of time than anything else. Guess I'll just have to put up with this for the moment. Doesn't help that DnD is so poorly documented by Sun.
Thanks for all your help.
Bart -
Hi,
I am working on a mobile project which requires drag and drop in same list. Has anyone implemented this in their project. Please share your experience.
Thanks,
Mahesh.OK, I've fixed this in the following way.
In the createDragIndicator() function, I've grabbed the element from the layout and set the dragImage's x and y to the same:
public override function createDragIndicator():IFlexDisplayObject
var dragItem:IVisualElement = selectedItem;
var dragImage : UIBitmap = new UIBitmap( dragItem, PixelSnapping.NEVER );
if (dragImage is IVisualElement)
IVisualElement(dragImage).owner = this;
var element:ILayoutElement;
if (layout.useVirtualLayout)
element = layout.target.getVirtualElementAt(selectedIndex);
else
element = layout.target.getElementAt(selectedIndex);
dragImage.x = element.getLayoutBoundsX();
dragImage.y = element.getLayoutBoundsY();
return dragImage; -
[svn] 3336: Fix an AIR drag and drop problem.
Revision: 3336
Author: [email protected]
Date: 2008-09-24 12:24:27 -0700 (Wed, 24 Sep 2008)
Log Message:
Fix an AIR drag and drop problem.
QE: YES
Doc:
Checkintests: Yes
Reviewer: pfarland
Bugs: SDK-17006
Ticket Links:
http://bugs.adobe.com/jira/browse/SDK-17006
Modified Paths:
flex/sdk/branches/3.0.x/frameworks/projects/airframework/src/mx/managers/NativeDragManage rImpl.asUpdate 2, if it can help someone:
Finally I don't manage the drag and drop by myself using
DragManager.doDrag(...). Why? Because doing so if the user clicks
on the scrollbars, on the datagrid header or on an empty row, it
triggers the drag start and that is ugly. By letting Flex managing
the drag and drop process, this doesn't append. BUT I was unable to
use a custom proxy image then. Until I found this article:
http://www.dgrigg.com/post.cfm/11/03/2006/DataGrid-Drag-Image
The trick is:
1) save the mouseX and mouseY using the mousedown event.
2) override dragImage(), as the article says, to create your
custom proxy, attaching to it a FlexEvent.UPDATE_COMPLETE event,
saving it to a class variable and returning it.
3) When you receive the FlexEvent.UPDATE_COMPLETE event, you
update the proxy position (that is saved in a class variable) using
the saved mouseX and mouseY and you remove the listener to the
event:
When you drop the proxy, you access the dragged items in :
event.dragSource.dataForFormat("items")
Hope this helps, I spent lot of time trying to resolve this
issue! Now it works perfectly! :-) -
I have never been so frustrated before in my life with any phone. I find it obnoxious as it is that I cannot simply drag and drop files (especially MP3's) straight from my PC directly into my phone, which I have been used to doing up until now. Everyone who convinced me to get the iPhone has instructed me that my frustration can be fixed by downloading iTunes and syncing it all up via that program (which I have never used before). So, I downloaded the program successfully, however when I connect the iPhone 4 to the PC and iTunes is open, I get an error message that 'iTunes cannot read the content of the iPhone "iPhone" and that I should go to the Preferences tab of the iPhone and select 'restore' to restore this phone to factory settings. First of all, I don't understand why I need to do that. I have already downloaded apps and other important things in the 2 days that I have the phone. I am also scared that it will erase my contacts. This is such a headache. Music is very imporatant to me, but I am getting so frustrated that I don't have freedom over the phone which I thought was supposed to be one of the best out there. I would really appreciate help in this matter. I am sure the phone is great but I am on the verge of taking it back and getting something else.
Hey joshuafromisr,
If you resintall iTunes, it should fix the issue. The following document will go over how to remove iTunes fully and then reinstall. Depending on what version of Windows you're running you'll either follow the directions here:
Removing and Reinstalling iTunes, QuickTime, and other software components for Windows XP
http://support.apple.com/kb/HT1925
or here:
Removing and reinstalling iTunes, QuickTime, and other software components for Windows Vista or Windows 7
http://support.apple.com/kb/HT1923
Best,
David -
When I drag and drop a website icon from the Forefox address bar to the desk top, the short cut is created but the icon that appears is the firefox Icon. I want to disply the icon from the website that the short cut refers to. I have checked all I can think of in my computer to no avail.
You have to assign the favicon yourself to the desktop shortcut (right-click the shortcut: Properties) after you have dragged the link to the desktop.
You can usually find the favicon in Tools >Page Info > Media and save the icon there.
Otherwise use the main domain of the website and add favicon.ico (e.g. mozilla.com/favicon.ico ) to display the favicon in a tab and save that image to a folder. -
Hi, Im not a frequent forum poster, as most of my questions can be found already answered on them!
This is a question Ive had for a long time and it amazes me that no-one else seems to ask it. I check at each OS upgrade but its never there...
Is there any way of dragging and dropping an iCal event showing in week view across to a date in the left sidebar monthly calendar?
I was able to do this years ago in MS Outlook, and utilized it all the time when I needed to push things back, now I have to open the event and select an new date in the drop-down calendar for each & every event I want to move to a new month at the end of the month.
If its definitely not possible, how to you ask apple to consider including it - it doesnt seem like a particularly difficult task.
Thankyou
Andrew.Andrew,
Is there any way of dragging and dropping an iCal event showing in week view across to a date in the left sidebar monthly calendar?
No, but you can use cut/paste. Cut (⌘X) the event, then click on the week where you want to move the event, and Paste (⌘V).
If you have a suggestion for Apple to change that method use: Apple - Mac OS X - Feedback. -
Why does not drag and drop work?!
Hello,
I am trying to implent a drag and drop from a table to an icon representing a trash.
The drop handler fails in converting the selected rows to a list:
com.sun.el.MethodExpressionImpl@87d9c00d javax.el.ELException: java.lang.ClassCastException: java.lang.String cannot be cast to java.util.List
Could you help me to understand why? Below are the details.
This is the af:table:
<af:table var="row" rowBandingInterval="0" id="t1"
value="#{bindings.MyView1.collectionModel}"
rowSelection="multiple"
columnStretching="last"
horizontalGridVisible="false"
verticalGridVisible="false" fetchSize="-1"
autoHeightRows="6" width="190"
disableColumnReordering="true">
<af:column sortable="true" headerText="Entry" id="c1"
align="start">
<af:outputText value="#{row.Description}" id="ot1"/>
</af:column>
<af:dragSource actions="MOVE" defaultAction="MOVE"
discriminant="delete"/>
</af:table>
This is the drop area:
<af:image source="Images/empty_trash_32.png" id="i2">
<af:dropTarget dropListener="#{backingBeanScope.DropHandlerBean.dropHandler}"
actions="MOVE">
<af:dataFlavor flavorClass="org.apache.myfaces.trinidad.model.RowKeySet"
discriminant="delete"/>
</af:dropTarget>
</af:image>
This is the failing listener listener (the failing point is bold):
public DnDAction dropHandler(DropEvent dropEvent) {
DnDAction dnda = DnDAction.NONE;
if (dropEvent.getProposedAction() == DnDAction.MOVE) { // delete
RichTable table = (RichTable)dropEvent.getDragComponent();
//determine the rows that are dragged over
Transferable t = dropEvent.getTransferable();
//when looking for data, use the same discriminator as defined
//on the drag source
DataFlavor<RowKeySet> df =
DataFlavor.getDataFlavor(RowKeySet.class, "delete");
RowKeySet rks = t.getData(df);
if (rks == null) {
return DnDAction.NONE;
Iterator iter = rks.iterator();
while (iter.hasNext()) {
//get next selected row key
System.out.println(rks.toArray().length); // the number of selected rows is ok
List key = (List)iter.next(); // here gives: java.lang.ClassCastException: java.lang.String cannot be cast to java.util.List
//make row current so we can access it
table.setRowKey(key);
//the table model represents its row by the ADF binding class,
//which is JUCtrlHierNodeBinding
JUCtrlHierNodeBinding rowBinding =
(JUCtrlHierNodeBinding)table.getRowData();
Row row = (Row)rowBinding.getRow();
//delete row;
row.remove();
//activate animation
dnda = DnDAction.MOVE;
return dnda;
thanks.I did try, I obtained this:
java.lang.NullPointerException
Why NullPointerException?
I don't know if this helps, but consider that the collection model comes from a ViewObject built on three EOs with many fields, although the table only shows one column.
This is the Iterator in my pageDef:
<table IterBinding="MyView1Iterator" id="MyView1">
<AttrNames>
<Item Value="Cod1"/>
<Item Value="Cod2"/>
<Item Value="Cod3"/>
<Item Value="Cod4"/>
<Item Value="Description"/>
<Item Value="Cod5"/>
</AttrNames>
</table>
Any idea?
I will see the Key content with the debugger. -
Did my first back up today using external hard drive and time machine now i can't drag and drop
Hi, i did my first back up today using time machine it all went onto my external hard drive fine. Now i cant drag and drop anyhting. I assume ive cahnged some settings in time machine but cant figure it out what to do can some one help ?
thanksBrandbasher wrote:
Thanks Pondini but i have closed time machine, removed external hard drive.
Did you eject it first?
Now i cant drag and drop anything on my desk top, or mail or any other application. Ive tried moving folders, documents none of it works. Even moving around documents within a folder, it wont let me chnage the position of files.
That shouldn't be related to Time Machine (especially if the backups aren't mounted).
What happens when you try those things? Do you get any messages? Anything you can post a screenshot of?
Have you tried a Restart?
Does it happen in another user account? (If you don't have one, create one via System Prefs > Users & Groups.) -
Drag and Drop (re-order) Thumbnails in Organizer
I am using Photoshop Elements version 5.0.2
I would like to re-order pictures in an order that will make sense for me in my business. I suppose I can go through each pix and change the time on them, so I can then sort by time stamp.
Is there an easier way to do this? I was hopeful that I could drag and drop them in Thumbnail view - but I cannot.
Thank you,
Jamie>Is there anyway to delete the photos in the main well, without losing them from my collection?
As I understand the design, the main well is intended to be all the photos that you are managing with Photoshop Elements.
Collections are used to display a specific group of those photos in your chosen sequence for any given activity.
I suspect that since you are using a consumer product such as Photoshop Elements for your business purpose, you may need to make some compromises like having a default (the main photo well) display sequence which you see first when starting PSE that is not what you would choose.
This is not bad if PSE does what you want - just additional steps to switch to the Collection view and also to maintain (drag and drop) the sequencing of the collection when you add additional photo files to a Collection. -
Problems with ListViews Drag and Drop
I'm surprised that there isn't an Active X control that can do this more
easily? Would
be curious to find out if there is - although we aren't really embracing the
use of
them within Forte because it locks you into the Microsoft arena.
---------------------- Forwarded by Peggy Lynn Adrian/AM/LLY on 02/03/98 01:33
PM ---------------------------
"Stokesbary, Michael" <[email protected]> on 02/03/98 12:19:52 PM
Please respond to "Stokesbary, Michael" <[email protected]>
To: "'[email protected]'" <[email protected]>
cc:
Subject: Problems with ListViews Drag and Drop
I am just curious as to other people's experiences with the ListView
widget when elements in it are set to be draggable. In particular, I am
currently trying to design an interface that looks a lot like Windows
Explorer where a TreeView resides on the left side of the window and a
ListView resides on the right side. Upon double clicking on the
ListView, if the current node that was clicked on was a folder, then the
TreeView expands this folder and the contents are then displayed in the
ListView, otherwise, it was a file and it is brought up in Microsoft
Word. All this works great if I don't have the elements in the ListView
widget set to be draggable. If they are set to be draggable, then I am
finding that the DoubleClick event seems to get registered twice along
with the ObjectDrop event. This is not good because if I double click
and the current node is a folder, then it will expand this folder in the
TreeView, display the contents in the ListView, grab the node that is
now displayed where that node used to be displayed and run the events
for that as well. What this means, is that if this is a file, then Word
is just launched and no big deal. Unfortunately, if this happens to be
another directory, then the previous directory is dropped into this
current directory and a recursive copy gets performed, giving me one
heck of a deep directory tree for that folder.
Has anybody else seen this, or am I the only lucky one to experience.
If need be, I do have this exported in a .pex file if anybody needs to
look at it more closely.
Thanks in advance.
Michael Stokesbary
Software Engineer
GTE Government Systems Corporation
tel: (650) 966-2975
e-mail: [email protected]here is the required code....
private static class TreeDragGestureListener implements DragGestureListener {
public void dragGestureRecognized(DragGestureEvent dragGestureEvent) {
// Can only drag leafs
JTree tree = (JTree) dragGestureEvent.getComponent();
TreePath path = tree.getSelectionPath();
if (path == null) {
// Nothing selected, nothing to drag
System.out.println("Nothing selected - beep");
tree.getToolkit().beep();
} else {
DefaultMutableTreeNode selection = (DefaultMutableTreeNode) path
.getLastPathComponent();
if (selection.isLeaf()) {
TransferableTreeNode node = new TransferableTreeNode(
selection);
dragGestureEvent.startDrag(DragSource.DefaultCopyDrop,
node, new MyDragSourceListener());
} else {
System.out.println("Not a leaf - beep");
tree.getToolkit().beep();
} -
I purchased an mp3 from a private website on my laptop. The itunes library i sync ipod to is on my desktop, so i copied the mp3 onto a flash drive and then into my desktop in the Downloads folder and Desktop folder as well as the itunes music folder, 3 places. I opened itunes on the desktop and read the instructions for importing music that's already in my computer. Neither the drag-and-drop or the Add File to Library method works. I've tried both ways over and over. Cannot figure out what the problem is. I do note that the name of the mp3 file doesn't show the .mp3 extension, it appears as simply it's title, Eating Healthy, without any extension at all. Could the filename be the problem, or do you have any other idea what I'm doing wrong? My OS is Windows 7, using IE9. Thanks.
ADDENDUM AFTER READING ANOTHER DISCUSSION HERE: I have now tried right clicking the song in Windows Explorer and choosing Open With, clicking itunes. The mp3 plays in itunes but does not add to the library.I don't have a Recently Added playlist. However, I discovered that the file I had named Eating Healthy was given the name You Can Enjoy Eating Healthy when it copied to iTunes. I'm guessing iTunes pulled the full name of the piece from the internet. Upshot--the mp3 did transfer to iTunes on all 3 tries, but I was looking in my alphabetized list under E, not Y, so I didn't see it there. Thanks for your help.
-
Using drag and drop property in forms.
Hi all,
I want to use drag and drop property in a form during
runtime.I am using oracle 7.3.I don't want to call any
another application.
Is there any way?
Thx in advance.Mona ! First tell your problem in brief ..Actually what you want
on runtime ...would you like to fetching the data from one item
to another or change the position of any item or
pushbutton ...or what..give detail ...obviously i can help you..
there are many commands like set_item_property ,
get_item_property but right now i could not understand your
prob ..tell me in brief..
You can ask me at [email protected]..
-Anwar -
Select All in a table does not work for Drag and Drop
Hi. I am using Jdeveloper 11.1.1.2 but have also reproduced in 11.1.1.3.
I am trying to implement drag and drop rows from one table to another. Everything works fine except when I do a Select All (ctrl-A) in a table, the table visually looks like all rows are selected, but when I try to click on one of the selected rows to drag to the other table, only the row I click on is dragged.
I tried setting Range Size -1, fetch mode to FETCH_ALL, content delivery to "immediate" but nothing works.
I even have reproduced not using a view object but just a List of beans with only 5 or 10 beans showing in the table.
Does anyone know how to get Select All to work for a Drag Source?
Thanks.
-EdFrank-
OK, thanks for looking into that. I also submitted this service request, which includes a simple sample app to demonstrate the problem:
SR #3-2387481211: ADF Drag and Drop does not work for rows in table using Select All
Thanks again for the reply.
-Ed -
Working in Logic 9, how do I use a drum loop WITH ITS PRESET EFFECTS? I can drag and drop the loop but it plays dry in timeline. thanks
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Green Apple tracks are MIDI files (so to speak). If you drag one from the loop browser (Capitol C Orchestral hit, as you mentioned in this exable) directly into the arrange page it creates the MIDI file and the instrument to play it back on.
HOWEVER.If you create and audio track first, THEN drag the green Apple loop onto that track, the loop will get "bounced" with the reverb in tact and you'll have the exact sound that you heard in the preview.
Make sense?
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