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
return category;
		}
		return category + ":" + pattern; 
	}
	/**
	 * Determines the format string is modified or not from the page.
	 * 
	 * @return true if the format string is modified.
	 */
	public boolean isFormatModified( )
	{
		String c = getCategory( );
		String p = getPattern( );
		if ( oldCategory == null )
		{
			if ( c != null )
			{
				return true;
			}
		}
		else if ( !oldCategory.equals( c ) )
		{
			return true;
		}
		if ( oldPattern == null )
		{
			if ( p != null )
			{
				return true;
			}