[news.eclipse.platform.swt] Re: re TablesViewer and new 3.3 API Snippet

[Southman <southman@xxxxxxxxxxxxxxxx>]

I guess I have run into the Java problem of anonymous class cannot 
access parent variables (only final values) if instantiated in a method 
of the parent class.   I have made a few attempts at work arounds etc 
without any success - seem to always wind up back where i started. 
There seems to be a bit of discussion and work on proposed java lang 
modifications etc to overcome the anonymous/variable problem.

However for the time being is there a work around using  JFace classes 
to allow looping  through data as per original post or must I code hard 
code the data set up for each column - ie the ColumnLabelProvider 
getText method as per the snippet.

Regrds
Peter Snowball


Southman wrote:
> Hi Tom
> Thanks thanks for the quick reply
> will check out
> Regards
> Peter
>
> Tom Schindl wrote:
> > Hi,
> >
> > I don't think this is true. It creates an intance for every column. My 
> > guess is that your variable j is an instance var and thus in the end j 
> > will always point to the last index. Without seeing a complete snippet 
> > I can't say more.
> >
> > Tom
> >
> > Southman schrieb:
> > > I am new to JFace and am trying to have reusable table class based on 
> > > snippet 24 that loops through the columns and sets up column titles 
> > > etc.  and column data etc. as follows
> > >
> > > for column[j]
> > >
> > > TableViewerColumn column[j] = new TableViewerColumn(v, SWT.NONE);
> > >     column[j].getColumn().setWidth(w[j]);
> > >     column[j].getColumn().setText(title[j]);
> > >     column[j].getColumn().setMoveable(movable[j]);
> > >     column[j].setLabelProvider(new ColumnLabelProvider() {
> > >
> > >     public String getText(Object element) {
> > >             return ((Person) element).getData(j);
> > >     }
> > > });
> > >
> > > Everything works for the column width and titles etc. however it 
> > > appears as if the loop only creates one ColumnLableProvder for all 
> > > the columns. Is there a way around this or must you hard code the 
> > > column data as per the snippet 24.
> > >
> > > Original code - one block per column
> > > *************************************
> > > TableViewerColumn column = new TableViewerColumn(v, SWT.NONE);
> > >     column.getColumn().setWidth(200);
> > >     column.getColumn().setText("Givenname");
> > >     column.getColumn().setMoveable(true);
> > >     column.setLabelProvider(new ColumnLabelProvider() {
> > >
> > >     public String getText(Object element) {
> > >             return ((Person) element).givenname;
> > >     }
> > > });
> > > ******************************************************
> > >
> > > Thanks
> > > Peter Snowball