org.apache.fop.fo.expr

Class FromParentFunction

Implemented Interfaces:
Function

public class FromParentFunction
extends FunctionBase

Class modelling the from-parent Property Value function. See Sec. 5.10.4 of the XSL-FO spec.

Method Summary

Property
eval(Property[] args, PropertyInfo pInfo)
int
nbArgs()
boolean
padArgsWithPropertyName()

Methods inherited from class org.apache.fop.fo.expr.FunctionBase

getPercentBase, padArgsWithPropertyName

Method Details

eval

public Property eval(Property[] args,
                     PropertyInfo pInfo)
            throws PropertyException
Specified by:
eval in interface Function
Parameters:
args - array of arguments, which should either be empty, or the first of which should contain an NCName corresponding to property name
pInfo - PropertyInfo object to be evaluated
Returns:
property containing the computed value
Throws:
PropertyException - if the arguments are incorrect

nbArgs

public int nbArgs()
Specified by:
nbArgs in interface Function
Returns:
1 (maximum arguments for the from-parent function)

padArgsWithPropertyName

public boolean padArgsWithPropertyName()
Specified by:
padArgsWithPropertyName in interface Function
Overrides:
padArgsWithPropertyName in interface FunctionBase
Returns:
true (allow padding of arglist with property name)

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