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
}
		}
	};
	private Composite buttonBar;
	private TableViewer categoryTable, subCategoryTable, functionTable;
	private IExpressionProvider provider;
	private SourceViewer sourceViewer;
	private String expression = null;
	private String title;
	/**
	 * Create an expression builder under the given parent shell with the given
	 * initial expression
	 * 
	 * @param parentShell
	 *            the parent shell
	 * @param initExpression
	 *            the initial expression
	 */
	public ExpressionBuilder( Shell parentShell, String initExpression )
	{
		super( parentShell );
		title = DIALOG_TITLE;
		this.expression = UIUtil.convertToGUIString( initExpression );
	}
	/**
	 * Create an expression builder under the default parent shell with the
	 * given initial expression
	 * 
	 * @param initExpression
	 *            the initial expression