Bug 122412 Need a scroll bar to display the full description in expression builder
Description: Need a scroll bar to display the full description in expression builder Step to reproduce: 1.Open the expression builder, choose BIRT JS Object->Total Expected result: All the methods and description could be displayed.Since we can't resize the dialog of expression builder, a scroll bar is needed Actual result: The methods and description are truncated due to the limited space (see the sreenshot in attachment)
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/ui/dialogs/ExpressionBuilder.java
if ( selection.isEmpty( ) )
			{
				return;
			}
			TableViewer target = null;
			if ( event.getSource( ) == categoryTable )
			{
				target = subCategoryTable;
			}
			else if ( event.getSource( ) == subCategoryTable )
			{
				target = functionTable;
			}
			if ( target != null )
			{
				target.setInput( selection.getFirstElement( ) );
			}
		}
	};
	private ITableLabelProvider tableLabelProvider = new ITableLabelProvider( ) {
		public Image getColumnImage( Object element, int columnIndex )
		{
			return provider.getImage( element );
		}
		public String getColumnText( Object element, int columnIndex )
		{
			return provider.getDisplayText( element );
		}
		public void addListener( ILabelProviderListener listener )
		{