Bug 390669 [Accessibility]Press 'Tab' doesn't focus on the next report item when adding relative period aggregation.
xtab/org.eclipse.birt.report.item.crosstab.ui/src/org/eclipse/birt/report/item/crosstab/internal/ui/dialogs/CrosstabBindingDialogHelper.java
IResourceLocator.MESSAGE_FILE );
			}
			return urls;
		}
	}
	private void updateRemoveBtnState( )
	{
		btnRemoveDisplayNameID.setEnabled( txtDisplayNameID.getText( )
				.equals( EMPTY_STRING ) ? false : true );
	}
	private boolean isEditModal = false;
	public void setEditModal( boolean isEditModal )
	{
		this.isEditModal = isEditModal;
	}
	public boolean isEditModal( )
	{
		return isEditModal;
	}
	private void modifyDialogContent( )
	{
		if ( hasInitDialog && isEditModal( ) && hasModified == false )
		{
			hasModified = true;
			validate( );
		}
	}
	private boolean hasModified = false;
}