cz.vutbr.web.csskit.fn.MinMaxImpl Maven / Gradle / Ivy

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jStyleParser is a CSS parser written in Java. It has its own application interface that is designed to allow an efficient CSS processing in Java and mapping the values to the Java data types. It parses CSS 2.1 style sheets into structures that can be efficiently assigned to DOM elements. It is intended be the primary CSS parser for the CSSBox library. While handling errors, it is user agent conforming according to the CSS specification.

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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.TermLength;
import cz.vutbr.web.css.TermList;
import cz.vutbr.web.css.TermPercent;
import cz.vutbr.web.csskit.TermFunctionImpl;
import java.util.List;

/**
 *
 * @author Petr Mikulík
 */
public class MinMaxImpl extends TermFunctionImpl implements TermFunction.MinMax {

    private static final String MIN_CONTENT = "min-content";
    private static final String MAX_CONTENT = "max-content";
    private static final String AUTO = "auto";

    private Unit _min;
    private Unit _max;

    public MinMaxImpl() {
        setValid(false);
    }

    @Override
    public TermList setValue(List> value) {
        super.setValue(value);
        List> args = getSeparatedValues(DEFAULT_ARG_SEP, true);
        if (args != null && args.size() == 2) {
            if (setArgument(true, args.get(0)) && setArgument(false, args.get(1))) {
                setValid(true);
            }
        }
        return this;
    }

    @Override
    public Unit getMin() {
        return _min;
    }

    @Override
    public Unit getMax() {
        return _max;
    }

    private boolean setArgument(boolean isMin, Term argTerm) {
        if (argTerm instanceof TermLength) {
            if (isMin) {
                _min = Unit.createWithLenght((TermLength) argTerm);
            } else {
                _max = Unit.createWithLenght((TermLength) argTerm);
            }
        } else if (argTerm instanceof TermPercent) {
            if (isMin) {
                _min = Unit.createWithLenght((TermPercent) argTerm);
            } else {
                _max = Unit.createWithLenght((TermPercent) argTerm);
            }
        } else if (argTerm instanceof TermIdent) {
            String value = ((TermIdent) argTerm).getValue();
            if (value.equalsIgnoreCase(MIN_CONTENT)) {
                if (isMin) {
                    _min = Unit.createWithMinContent();
                } else {
                    _max = Unit.createWithMinContent();
                }
            } else if (value.equalsIgnoreCase(MAX_CONTENT)) {
                if (isMin) {
                    _min = Unit.createWithMaxContent();
                } else {
                    _max = Unit.createWithMaxContent();
                }
            } else if (value.equalsIgnoreCase(AUTO)) {
                if (isMin) {
                    _min = Unit.createWithAuto();
                } else {
                    _max = Unit.createWithAuto();
                }
            } else {
                return false;
            }
        } else {
            return false;
        }
        return true;
    }

}