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Hello,
I'm trying to capture the drop (FileTransfer)
event in a browser widget. I tried hooking a DropTarget(
) to the *.swt.browser widget with no
success. Then I tried to go the Ole way and create a
Shell.Explorer site automation and try to hook the
DropTarget( ) to both the OleFrame and OleControlSite with no success. (yeah, I'm kind of hacking
it)
I have the feeling that I need to enable something
in the Ole control and use some sort of OleListener.. but I can't find clear
documentation of how get deep down in the API and capture drag/drop
events.
Have anyone done anything in this
area?
Any input would be appreciated. Below is a short
program demostrating what I'm trying to do. Step D is the
one I'm having trouble with, getting the Drop listener to
work.
Thank you,
-Edwin
import org.eclipse.swt.*;
import
org.eclipse.swt.ole.win32.*;
import
org.eclipse.swt.internal.ole.win32.*;
import
org.eclipse.swt.widgets.*;
import
org.eclipse.swt.events.*;
import
org.eclipse.swt.dnd.*;
public class test
{
public
static void
main(String[] args)
{
//a. Create Shell
Display
display = new Display();
Shell shell = new
Shell( display );
shell.setSize( 610, 400 );
//b.
Create Browser (the old way)
OleFrame frame = new
OleFrame( shell, SWT.NONE );
OleControlSite site = new OleControlSite( frame, SWT.NONE, "Shell.Explorer" );
site.doVerb( OLE.OLEIVERB_INPLACEACTIVATE
);
OleAutomation browser = new
OleAutomation( site );
//c. Disable "link navigation" and go
to google
int[] nameIds =
browser.getIDsOfNames(new String[] { "RegisterAsDropTarget"} ); //is this really
necessary (I wonder)?
browser.setProperty(nameIds[0], new Variant(false) ); //true or false --doesn't
work
nameIds = browser.getIDsOfNames( new String[] { "Navigate",
"URL"} );
browser.invoke( nameIds[0], new Variant[] { new
Variant("http://www.google.com") },
new int[] {
nameIds[1] } );
//d. Listen to drop events
???
DropTarget target = new
DropTarget(frame, DND.DROP_COPY ); // <--help
here!!!
target.setTransfer( new
Transfer[] { FileTransfer.getInstance() } );
target.addDropListener(
new DropTargetListener()
{
public void dragEnter(DropTargetEvent event) {
System.out.println("drag
enter");
}
public
void dragLeave(DropTargetEvent event) {
System.out.println("drag
leave");}
public void
dragOver(DropTargetEvent event) { System.out.println("drag over");}
public void
dragOperationChanged(DropTargetEvent event) { System.out.println("drag changed");}
public void
dropAccept(DropTargetEvent event) { System.out.println("drag accept");}
public void
drop(DropTargetEvent event)
{
String[] files = (String[]) event.data; //expects FileTransfer
data
for (int
p=0;p<files.length; p++)
System.out.println( files[p]
);
}/*drop*/
});
//e. Show window
frame.setBounds( 0,0, 600, 400 );
shell.open();
while (!shell.isDisposed())
{
if
(!display.readAndDispatch())
display.sleep();
} /*while*/
browser.dispose();
display.dispose();
}/*main*/
}/*test*/
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