Bug 120218 Right click menu option to apply theme.
We should support the following right click menu. -- User right clicks int he report design layout area. -- The following menu items needs to be supported Theme --> Apply Theme -->Theme1 -->Theme2 ( similar to Apply style menu option )
UI/org.eclipse.birt.report.designer.core/src/org/eclipse/birt/report/designer/util/DEUtil.java
{
				return getLargerFontSizeIntValue( handle.getContainer( ) );
			}
			else if ( fontSize.equals( DesignChoiceConstants.FONT_SIZE_SMALLER ) )
			{
				return getSmallerFontSizeIntValue( handle.getContainer( ) );
			}
			else
			{
				for ( int i = DesignerConstants.fontSizes.length - 1; i > 0; i-- )
				{
					if ( fontSize.equals( DesignerConstants.fontSizes[i][0] ) )
					{
						return Integer.parseInt( DesignerConstants.fontSizes[i - 1][1] );
					}
				}
				return Integer.parseInt( DesignerConstants.fontSizes[0][1] );
			}
		}
		else
		{
			
			String size = (String) DesignerConstants.fontMap.get( DesignChoiceConstants.FONT_SIZE_MEDIUM );
			return Integer.parseInt( size ) - 1;
		}
	}
	/**
	 * Since "&" in menu text has special meaning, we must escape it before
	 * displaying.
	 *