Mega Code Archive
Drag selected text in Text to Label
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import org.eclipse.swt.SWT;
import org.eclipse.swt.dnd.DND;
import org.eclipse.swt.dnd.DragSource;
import org.eclipse.swt.dnd.DragSourceAdapter;
import org.eclipse.swt.dnd.DragSourceEvent;
import org.eclipse.swt.dnd.DropTarget;
import org.eclipse.swt.dnd.DropTargetAdapter;
import org.eclipse.swt.dnd.DropTargetEvent;
import org.eclipse.swt.dnd.TextTransfer;
import org.eclipse.swt.dnd.Transfer;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Text;
public class DragTextToLabel {
public static void main(String[] args) {
Display display = new Display();
Shell shell = new Shell(display);
Text text = new Text(shell, SWT.BORDER|SWT.SINGLE);
Transfer[] types = new Transfer[] { TextTransfer.getInstance() };
DragSource source = new DragSource(text, DND.DROP_MOVE | DND.DROP_COPY);
source.setTransfer(types);
source.addDragListener(new DragSourceAdapter() {
public void dragSetData(DragSourceEvent event) {
// Get the selected items in the drag source
DragSource ds = (DragSource) event.widget;
Text text = (Text) ds.getControl();
event.data = text.getSelectionText();
}
});
Label label = new Label(shell, SWT.BORDER);
// Create the drop target
DropTarget target = new DropTarget(label, DND.DROP_MOVE | DND.DROP_COPY | DND.DROP_DEFAULT);
target.setTransfer(types);
target.addDropListener(new DropTargetAdapter() {
public void dragEnter(DropTargetEvent event) {
if (event.detail == DND.DROP_DEFAULT) {
event.detail = (event.operations & DND.DROP_COPY) != 0 ? DND.DROP_COPY : DND.DROP_NONE;
}
// Allow dropping text only
for (int i = 0, n = event.dataTypes.length; i < n; i++) {
if (TextTransfer.getInstance().isSupportedType(event.dataTypes[i])) {
event.currentDataType = event.dataTypes[i];
}
}
}
public void dragOver(DropTargetEvent event) {
event.feedback = DND.FEEDBACK_SELECT | DND.FEEDBACK_SCROLL;
}
public void drop(DropTargetEvent event) {
if (TextTransfer.getInstance().isSupportedType(event.currentDataType)) {
// Get the dropped data
DropTarget target = (DropTarget) event.widget;
Label label = (Label) target.getControl();
String data = (String) event.data;
label.setText(data);
label.redraw();
}
}
});
text.setBounds(10,10,100,25);
label.setBounds(10,55,100,25);
shell.open();
while (!shell.isDisposed()) {
if (!display.readAndDispatch()) {
display.sleep();
}
}
display.dispose();
}
}
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