w3c.css.properties.css3.CssGridAutoRows Maven / Gradle / Ivy
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Backend for the W3C CSS Validation Service
//
// Author: Yves Lafon
//
// (c) COPYRIGHT MIT, ERCIM, Keio, Beihang, 2017.
// Please first read the full copyright statement in file COPYRIGHT.html
package org.w3c.css.properties.css3;
import org.w3c.css.properties.css.CssProperty;
import org.w3c.css.util.ApplContext;
import org.w3c.css.util.InvalidParamException;
import org.w3c.css.values.CssExpression;
import org.w3c.css.values.CssFunction;
import org.w3c.css.values.CssIdent;
import org.w3c.css.values.CssTypes;
import org.w3c.css.values.CssValue;
import org.w3c.css.values.CssValueList;
import java.util.ArrayList;
import static org.w3c.css.values.CssOperator.COMMA;
import static org.w3c.css.values.CssOperator.SPACE;
/**
* @spec https://www.w3.org/TR/2017/CR-css-grid-1-20170209/#propdef-grid-auto-rows
*/
public class CssGridAutoRows extends org.w3c.css.properties.css.CssGridAutoRows {
public static final CssIdent[] allowed_values;
public static final String minmax = "minmax";
public static final String fit_content = "fit-content";
protected enum ArgType {INFLEXIBLE_BREADTH, TRACK_BREADTH, FIXED_BREADTH}
static {
String[] _allowed_values = {"min-content", "max-content", "auto"};
allowed_values = new CssIdent[_allowed_values.length];
int i = 0;
for (String s : _allowed_values) {
allowed_values[i++] = CssIdent.getIdent(s);
}
}
public static CssIdent getAllowedIdent(CssIdent ident) {
for (CssIdent id : allowed_values) {
if (id.equals(ident)) {
return id;
}
}
return null;
}
/**
* Create a new CssGridAutoRows
*/
public CssGridAutoRows() {
value = initial;
}
/**
* Creates a new CssGridAutoRows
*
* @param expression The expression for this property
* @throws org.w3c.css.util.InvalidParamException
* Expressions are incorrect
*/
public CssGridAutoRows(ApplContext ac, CssExpression expression, boolean check)
throws InvalidParamException {
setByUser();
CssValue val;
char op;
ArrayList values = new ArrayList<>();
while (!expression.end()) {
val = expression.getValue();
op = expression.getOperator();
if (val.getType() == CssTypes.CSS_IDENT && inherit.equals(val)) {
if (expression.getCount() > 1) {
throw new InvalidParamException("unrecognize", ac);
}
values.add(inherit);
} else {
values.add(parseTrackSize(ac, val, this));
}
if (op != SPACE) {
throw new InvalidParamException("operator", op,
getPropertyName(), ac);
}
expression.next();
}
value = (values.size() == 1) ? values.get(0) : new CssValueList(values);
}
protected static CssValue parseTrackSize(ApplContext ac, CssValue value,
CssProperty caller)
throws InvalidParamException {
switch (value.getType()) {
case CssTypes.CSS_IDENT:
case CssTypes.CSS_NUMBER:
case CssTypes.CSS_LENGTH:
case CssTypes.CSS_PERCENTAGE:
case CssTypes.CSS_FLEX:
return parseTrackBreadth(ac, value, caller);
case CssTypes.CSS_FUNCTION:
CssFunction function = (CssFunction) value;
String fname = function.getName().toLowerCase();
if (minmax.equals(fname)) {
return parseMinmaxFunction(ac, function,
ArgType.INFLEXIBLE_BREADTH,
ArgType.TRACK_BREADTH, caller);
} else if (fit_content.equals(fname)) {
return parseFitContent(ac, function, caller);
}
default:
throw new InvalidParamException("value",
value.toString(),
caller.getPropertyName(), ac);
}
}
protected static CssValue parseFixedSize(ApplContext ac, CssValue value,
CssProperty caller)
throws InvalidParamException {
switch (value.getType()) {
case CssTypes.CSS_NUMBER:
case CssTypes.CSS_LENGTH:
case CssTypes.CSS_PERCENTAGE:
return parseFixedBreadth(ac, value, caller);
case CssTypes.CSS_FUNCTION:
CssFunction function = (CssFunction) value;
String fname = function.getName().toLowerCase();
if (minmax.equals(fname)) {
try {
return parseMinmaxFunction(ac, function,
ArgType.FIXED_BREADTH,
ArgType.TRACK_BREADTH, caller);
} catch (InvalidParamException ex) {
// we failed with the first option
// ignore and try the second one.
function.getParameters().starts();
}
return parseMinmaxFunction(ac, function,
ArgType.INFLEXIBLE_BREADTH,
ArgType.FIXED_BREADTH, caller);
} else if (fit_content.equals(fname)) {
return parseFitContent(ac, function, caller);
}
default:
throw new InvalidParamException("value",
value.toString(),
caller.getPropertyName(), ac);
}
}
protected static CssValue parseTrackBreadth(ApplContext ac, CssValue value,
CssProperty caller)
throws InvalidParamException {
CssIdent ident;
switch (value.getType()) {
case CssTypes.CSS_NUMBER:
value.getCheckableValue().checkEqualsZero(ac, caller);
return value;
case CssTypes.CSS_LENGTH:
case CssTypes.CSS_PERCENTAGE:
case CssTypes.CSS_FLEX:
value.getCheckableValue().checkPositiveness(ac, caller);
return value;
case CssTypes.CSS_IDENT:
ident = getAllowedIdent((CssIdent) value);
if (ident != null) {
return ident;
}
default:
throw new InvalidParamException("value",
value.toString(),
caller.getPropertyName(), ac);
}
}
protected static CssValue parseInflexibleBreadth(ApplContext ac, CssValue value,
CssProperty caller)
throws InvalidParamException {
CssIdent ident;
switch (value.getType()) {
case CssTypes.CSS_NUMBER:
value.getCheckableValue().checkEqualsZero(ac, caller);
return value;
case CssTypes.CSS_LENGTH:
case CssTypes.CSS_PERCENTAGE:
value.getCheckableValue().checkPositiveness(ac, caller);
return value;
case CssTypes.CSS_IDENT:
ident = getAllowedIdent((CssIdent) value);
if (ident != null) {
return ident;
}
default:
throw new InvalidParamException("value",
value.toString(),
caller.getPropertyName(), ac);
}
}
protected static CssValue parseFixedBreadth(ApplContext ac, CssValue value,
CssProperty caller)
throws InvalidParamException {
switch (value.getType()) {
case CssTypes.CSS_NUMBER:
value.getCheckableValue().checkEqualsZero(ac, caller);
return value;
case CssTypes.CSS_LENGTH:
case CssTypes.CSS_PERCENTAGE:
value.getCheckableValue().checkPositiveness(ac, caller);
return value;
default:
throw new InvalidParamException("value",
value.toString(),
caller.getPropertyName(), ac);
}
}
protected static CssFunction parseMinmaxFunction(ApplContext ac, CssFunction func,
ArgType type1, ArgType type2,
CssProperty caller)
throws InvalidParamException {
CssExpression exp = func.getParameters();
CssExpression nex;
CssValue val;
char op;
if (exp.getCount() != 2) {
throw new InvalidParamException("unrecognize", ac);
}
nex = new CssExpression();
val = exp.getValue();
op = exp.getOperator();
switch (type1) {
case INFLEXIBLE_BREADTH:
nex.addValue(parseInflexibleBreadth(ac, val, caller));
break;
case TRACK_BREADTH:
nex.addValue(parseTrackBreadth(ac, val, caller));
break;
case FIXED_BREADTH:
nex.addValue(parseFixedBreadth(ac, val, caller));
break;
default:
throw new InvalidParamException("value",
val.toString(),
caller.getPropertyName(), ac);
}
if (op != COMMA) {
throw new InvalidParamException("operator", op,
caller.getPropertyName(), ac);
}
nex.setOperator(op);
exp.next();
val = exp.getValue();
switch (type2) {
case INFLEXIBLE_BREADTH:
nex.addValue(parseInflexibleBreadth(ac, val, caller));
break;
case TRACK_BREADTH:
nex.addValue(parseTrackBreadth(ac, val, caller));
break;
case FIXED_BREADTH:
nex.addValue(parseFixedBreadth(ac, val, caller));
break;
default:
throw new InvalidParamException("value",
val.toString(),
caller.getPropertyName(), ac);
}
func.set(minmax, nex);
return func;
}
protected static CssFunction parseFitContent(ApplContext ac, CssFunction func,
CssProperty caller)
throws InvalidParamException {
CssExpression exp = func.getParameters();
CssValue val;
char op;
if (exp.getCount() != 1) {
throw new InvalidParamException("unrecognize", ac);
}
val = exp.getValue();
switch (val.getType()) {
case CssTypes.CSS_NUMBER:
val.getCheckableValue().checkEqualsZero(ac, caller);
break;
case CssTypes.CSS_LENGTH:
case CssTypes.CSS_PERCENTAGE:
val.getCheckableValue().checkPositiveness(ac, caller);
break;
default:
throw new InvalidParamException("value",
val.toString(),
caller.getPropertyName(), ac);
}
func.set(minmax, exp);
return func;
}
public CssGridAutoRows(ApplContext ac, CssExpression expression)
throws InvalidParamException {
this(ac, expression, false);
}
}
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