SWT - Getting Selected Rows from Table - swt

Question

I am trying to write a method that will get the current selections from the table and create a ArrayList from the selections.
Method:
public void getPlotterSelection() {
selPrinters = new ArrayList<PrinterProfile>();
int[] row = table.getSelectionIndices();
Arrays.sort(row);
if (row.length > 0) {
for(int i = row.length-1; i >= 0; i--){
PrinterProfile pp = new PrinterProfile(aa.get(i).getPrinterName(), aa.get(i).getProfileName());
selPrinters.add(pp);
}
}
}
This is the error I am getting
ERROR: 16:16:49,503 - TcLogger$IC_LogListener.logging:?
org.eclipse.core.runtime - org.eclipse.ui - 0 - Unhandled event loop exception
org.eclipse.swt.SWTException: Widget is disposed
at org.eclipse.swt.SWT.error(SWT.java:3884)
at org.eclipse.swt.SWT.error(SWT.java:3799)
at org.eclipse.swt.SWT.error(SWT.java:3770)
at org.eclipse.swt.widgets.Widget.error(Widget.java:463)
at org.eclipse.swt.widgets.Widget.checkWidget(Widget.java:336)
at org.eclipse.swt.widgets.Table.getSelectionIndices(Table.java:2536)
etc .......
The problem is with this line of code
int[] row = table.getSelectionIndices();
Once again..
I am trying to get the user selected rows in the table and put them in a arraylist.
Edit Adding more code
//////////////////////////////////////////////////////////////////////////
// createDialogArea() //
//////////////////////////////////////////////////////////////////////////
protected Control createDialogArea(Composite parent) {
final Composite area = new Composite(parent, SWT.NONE);
final GridLayout gridLayout = new GridLayout();
gridLayout.marginWidth = 15;
gridLayout.marginHeight = 10;
area.setLayout(gridLayout);
GridData gridData = new GridData(SWT.FILL, SWT.FILL, true, true);
area.setLayoutData(gridData);
checkingArray();
createCopyNumber(area);
createPlotterTable(area);
return area;
}
public void checkingArray() {
aa = abd.getPrintersArray();
}
//////////////////////////////////////////////////////////////////////////
// createPlotterTable() //
//////////////////////////////////////////////////////////////////////////
private void createPlotterTable(Composite parent) {
Composite composite = new Composite(parent, SWT.BORDER);
GridLayout gridLayout = new GridLayout(1, false);
composite.setLayout(gridLayout);
GridData gridData = new GridData(SWT.FILL, SWT.FILL, true, true);
composite.setLayoutData(gridData);
//gridData = new GridData(SWT.FILL, SWT.FILL, true, true );
table = new Table(composite, SWT.BORDER | SWT.FULL_SELECTION | SWT.MULTI);
table.setHeaderVisible(true);
table.setLinesVisible(true);
TableColumn[] column = new TableColumn[2];
column[0] = new TableColumn(table, SWT.FILL);
column[0].setText("Printer Name");
column[0].setWidth(200);
column[1] = new TableColumn(table, SWT.FILL);
column[1].setText("Profile Name");
column[1].setWidth(200);
gridData = new GridData();
gridData.verticalAlignment = GridData.FILL;
gridData.horizontalAlignment = GridData.FILL;
gridData.grabExcessHorizontalSpace = true;
gridData.grabExcessVerticalSpace = true;
table.setLayoutData(gridData);
fillTable(table);
table.setRedraw(true);
}
private void fillTable(Table table) {
table.setRedraw(false);
for(Iterator iterator = abd.getPrintersArray().iterator();iterator.hasNext();){
PrinterProfile printer = (PrinterProfile) iterator.next();
TableItem item = new TableItem(table, SWT.FILL);
int c = 0;
item.setText(c++, printer.getPrinterName());
item.setText(c++, printer.getProfileName());
}
table.setRedraw(true);
}
public void getPlotterSelection() {
selPrinters = new ArrayList<PrinterProfile>();
int[] row = table.getSelectionIndices();
Arrays.sort(row);
if (row.length > 0) {
for(int i = row.length-1; i >= 0; i--){
PrinterProfile pp = new PrinterProfile(aa.get(i).getPrinterName(), aa.get(i).getProfileName());
selPrinters.add(pp);
}
}
}
This is the button that calls the method
Button okButton = createButton(parent, IDialogConstants.OK_ID, "OK", true);
okButton.setEnabled(true);
okButton.addSelectionListener(new SelectionAdapter() {
public void widgetSelected(SelectionEvent e) {
getPlotterSelection();
}
});

Answer 1

I would suggest you to user Table viewer rather than Table. It makes your life easier. I see that you are showing table in a dialog. I guess your dialog is getting closed/disposed when you click OK before it get to getPlotterSelection() method.