Description Yury 2013-11-22 03:38:04 EST

Created attachment 237640 [details]
Wrong and good column wide calculation

Snippet to reproduce:

public int createUI() {
    ServerPushSession pushSession = new ServerPushSession();
    Display display = PlatformUI.createDisplay();
    pushSession.start();
    Shell shell = new Shell(display);
    shell.setLayout( new GridLayout() );
    
    TitleAreaDialog dlg = new TitleAreaDialog(shell){
      @Override
      protected Control createDialogArea( Composite parent ) {
        Composite composite = (Composite)super.createDialogArea( parent );
        
        TableViewer viewer = new TableViewer(composite, SWT.FULL_SELECTION | SWT.H_SCROLL | SWT.V_SCROLL | SWT.BORDER);
        
        Table table = viewer.getTable();
        table.setHeaderVisible( true );
        GridData gd = new GridData(GridData.FILL_BOTH);
        gd.horizontalSpan = 2;
        gd.widthHint = 300;
        table.setLayoutData(gd);

        TableColumn column = new TableColumn(table, SWT.NONE);
        column.setText( "Check" );
        column = new TableColumn(table, SWT.NONE, 1);
        column.setText( "Name" );
        
        TableLayout layout = new TableLayout();
        layout.addColumnData(new ColumnWeightData(300, true));
        layout.addColumnData(new ColumnWeightData(130, true));
        table.setLayout(layout);

        return composite;
      }

      @Override
      protected Control createContents( Composite parent ) {
        Control content = super.createContents( parent );
        setErrorMessage( "Error" );
        return content;
      }
    };
    
    
    shell.setSize( 500, 400 );
    shell.open();
    dlg.open();
    while( !shell.isDisposed() ) {
      if( !display.readAndDispatch() ) {
        display.sleep();
      }
    }
    pushSession.stop();
    display.dispose();
    return 0;
  }

Executing setErrorMessage( "Error" ) in createContents method leads to wrong size calculation of table columns (see the attached picture).
Not a critical issue, but a root problem could be a cause of other bugs (seems to me a problem is with FormData layouting of TitleAreaDialog.workArea).