cz.vutbr.web.csskit.fn.StepsImpl Maven / Gradle / Ivy
/*
*/
package cz.vutbr.web.csskit.fn;
import cz.vutbr.web.css.Term;
import cz.vutbr.web.css.TermFunction;
import cz.vutbr.web.css.TermIdent;
import cz.vutbr.web.css.TermInteger;
import cz.vutbr.web.css.TermList;
import cz.vutbr.web.csskit.TermFunctionImpl;
import java.util.List;
/**
*
* @author Petr Mikulík
*/
public class StepsImpl extends TermFunctionImpl implements TermFunction.Steps {
private int _numberOfSteps;
private Direction _direciton;
public StepsImpl() {
setValid(false);
}
@Override
public TermList setValue(List> value) {
super.setValue(value);
List>> args = getSeparatedArgs(DEFAULT_ARG_SEP);
if (args != null) {
if (args.size() == 1) {
if (setNumberOfSteps(args.get(0))) {
_direciton = Direction.END;
setValid(true);
}
} else if (args.size() == 2) {
if (setNumberOfSteps(args.get(0)) && setDirection(args.get(1))) {
setValid(true);
}
}
}
return this;
}
@Override
public int getNumberOfSteps() {
return _numberOfSteps;
}
@Override
public Direction getDirection() {
return _direciton;
}
private boolean setNumberOfSteps(List> argTerms) {
if (argTerms.size() == 1) {
Term> t = argTerms.get(0);
if (t instanceof TermInteger) {
int value = ((TermInteger) t).getIntValue();
if (value > 0) {
_numberOfSteps = value;
return true;
}
}
}
return false;
}
private boolean setDirection(List> argTerms) {
if (argTerms.size() == 1) {
Term> t = argTerms.get(0);
if (t instanceof TermIdent) {
String value = ((TermIdent) t).getValue();
for (Direction d : Direction.values()) {
if (d.toString().equals(value)) {
_direciton = d;
return true;
}
}
}
}
return false;
}
}