Bug 180645 Support set format for Date/Time type parameter.[0705]
Description: Support set format for Date/Time type parameter. Build number:2.2.0.v200704031345 Steps to reproduce: 1. New a Date report parameter. 2. Click Change... button to set format for it. Expected result: Can set format for Date/Time parameter. Actual result: Change... button is disabled. Error log:N/A
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/internal/ui/dialogs/FormatDateTimePage.java
* @author Liu sanyong: -----> for parameter dialog use.
	 */
	public void setInput( String formatString )
	{
		if ( formatString == null )
		{
			setInput( null, null );
			return;
		}
		String fmtStr = formatString;
		int pos = fmtStr.indexOf( ":" ); 
		if ( StringUtil.isBlank( fmtStr ) )
		{
			setInput( null, null );
			return;
		}
		else if ( pos == -1 )
		{
			setInput( fmtStr, fmtStr );
			return;
		}
		String category = fmtStr.substring( 0, pos );
		String patternStr = fmtStr.substring( pos + 1 );
		setInput( category, patternStr );
		return;
	}
	/**
	 * Sets input of the page.
	 * 
	 * @param category