| TableViewer getTable method problem [message #662605] |
Thu, 31 March 2011 05:35  |
Eclipse User |
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Hi,
This code is from class extending Dialog,
protected Control createDialogArea(Composite parent) {
createViewer(parent);
}
private void createViewer(Composite parent) {
viewer = new TableViewer(parent, SWT...... | ..);
createColumns(parent, viewer);
viewer.setInput(getModel());
viewer.getTable().setHeaderVisible(true);
viewer.getTable().setLinesVisible(true);
...
}
private void createColumns(Composite parent, TableViewer viewer) {
....
}
private void printTableRows()
{
TabelItem[] items=viewer.getTable().getItems() ///Problem??
}
As shown in above sample code, it says that viewer.getTable() is disposed & throws SWT Exception.
I can't understand this. Wht can be alternative solution to get all rows later in table once user conforms Dialog.OK?
On getting status OK, I am using getters to get updated data from table.
Thanks
Dharam
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| Re: TableViewer getTable method problem [message #662618 is a reply to message #662605] |
Thu, 31 March 2011 06:01  |
| Eclipse User |
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On 2011-03-31 11:35, Dharam wrote:
> Hi,
>
> This code is from class extending Dialog,
>
> protected Control createDialogArea(Composite parent) {
> createViewer(parent);
> }
>
> private void createViewer(Composite parent) {
> viewer = new TableViewer(parent, SWT...... | ..); createColumns(parent,
> viewer);
> viewer.setInput(getModel());
> viewer.getTable().setHeaderVisible(true);
> viewer.getTable().setLinesVisible(true);
> ..
> }
>
> private void createColumns(Composite parent, TableViewer viewer) {
> ...
> }
>
> private void printTableRows()
> {
> TabelItem[] items=viewer.getTable().getItems() ///Problem??
> }
>
> As shown in above sample code, it says that viewer.getTable() is
> disposed & throws SWT Exception.
>
> I can't understand this. Wht can be alternative solution to get all rows
> later in table once user conforms Dialog.OK?
> On getting status OK, I am using getters to get updated data from table.
From your snippet it is not clear, *when* printTableRows() is called as
part of your Dialog life-cycle - providing such elementary information
in error descriptions is crucial.
I assume you are calling the above function after the dialog composites
(and their children) have been disposed, e.g. after closing it. A good
idea is to override okPressed() and to perform your code *before*
invoking the super.okPressed(). At this point you know the user-decision
and you still have all controls available.
HTH & Greetings from Bremen,
Daniel Krügler
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