protected CSSValue parseFirstPosition(final LexicalUnit value) {
if (value == null) {
return null;
}
if (value.getLexicalUnitType() == LexicalUnit.SAC_IDENT) {
if ("left".equalsIgnoreCase(value.getStringValue())) {
return LEFT;
} else if ("center".equalsIgnoreCase(value.getStringValue())) {
return CENTER;
} else if ("right".equalsIgnoreCase(value.getStringValue())) {
return RIGHT;
} else if ("top".equalsIgnoreCase(value.getStringValue())) {
return TOP;
} else if ("bottom".equalsIgnoreCase(value.getStringValue())) {
return BOTTOM;
}
// ignore this rule.
return null;
}
if (value.getLexicalUnitType() == LexicalUnit.SAC_PERCENTAGE) {
return CSSNumericValue.createValue(CSSNumericType.PERCENTAGE, value.getFloatValue());
}
if (CSSValueFactory.isLengthValue(value)) {
return CSSValueFactory.createLengthValue(value);
}
// contains errors, we ignore this rule.
return null;
}
public CSSValue createValue(StyleKey name, LexicalUnit value) {
if (value.getLexicalUnitType() == LexicalUnit.SAC_IDENT) {
String ident = value.getStringValue();
if (ident.equalsIgnoreCase("auto")) {
return CSSAutoValue.getInstance();
}
final PageSize ps = PageSizeFactory.getInstance().getPageSizeByName(ident);
if (ps == null) {
return null;
}
value = value.getNextLexicalUnit();
int pageOrientation = PageFormat.PORTRAIT;
if (value != null) {
if (value.getLexicalUnitType() != LexicalUnit.SAC_IDENT) {
return null;
}
if (value.getStringValue().equalsIgnoreCase("landscape")) {
pageOrientation = PageFormat.LANDSCAPE;
} else if (value.getStringValue().equalsIgnoreCase("reverse-landscape")) {
pageOrientation = PageFormat.REVERSE_LANDSCAPE;
} else if (value.getStringValue().equalsIgnoreCase("portrait")) {
pageOrientation = PageFormat.PORTRAIT;
} else {
return null;
}
}
if (pageOrientation == PageFormat.LANDSCAPE
|| pageOrientation == PageFormat.REVERSE_LANDSCAPE) {
return new CSSValuePair(
CSSNumericValue.createPtValue(ps.getHeight()),
CSSNumericValue.createPtValue(ps.getWidth()));
} else {
return new CSSValuePair(
CSSNumericValue.createPtValue(ps.getWidth()),
CSSNumericValue.createPtValue(ps.getHeight()));
}
} else {
final CSSNumericValue horizontalWidth = (CSSNumericValue) parseWidth(value);
if (horizontalWidth == null) {
return null;
}
value = value.getNextLexicalUnit();
final CSSNumericValue verticalWidth;
if (value == null) {
verticalWidth = horizontalWidth;
} else {
verticalWidth = (CSSNumericValue) parseWidth(value);
if (verticalWidth == null) {
return null;
}
}
return new CSSValuePair(horizontalWidth, verticalWidth);
}
}
public CSSValue createValue(StyleKey name, LexicalUnit value) {
if (value.getLexicalUnitType() == LexicalUnit.SAC_IDENT) {
final String text = value.getStringValue();
if (ContentValues.NONE.getCSSText().equals(text)) {
return ContentValues.NONE;
}
if (ContentValues.INHIBIT.getCSSText().equals(text)) {
return ContentValues.INHIBIT;
}
if (ContentValues.NORMAL.getCSSText().equals(text)) {
return ContentValues.NORMAL;
}
}
final ArrayList contents = new ArrayList();
final ArrayList contentList = new ArrayList();
while (value != null) {
if (value.getLexicalUnitType() == LexicalUnit.SAC_IDENT) {
CSSValue o = lookupValue(value);
if (o == null) {
// parse error ...
return null;
}
contentList.add(o);
} else if (value.getLexicalUnitType() == LexicalUnit.SAC_STRING_VALUE) {
contentList.add(new CSSStringValue(CSSStringType.STRING, value.getStringValue()));
} else if (value.getLexicalUnitType() == LexicalUnit.SAC_URI) {
final CSSStringValue uriValue = CSSValueFactory.createUriValue(value);
if (uriValue == null) {
return null;
}
contentList.add(uriValue);
} else if (value.getLexicalUnitType() == LexicalUnit.SAC_FUNCTION
|| value.getLexicalUnitType() == LexicalUnit.SAC_COUNTER_FUNCTION
|| value.getLexicalUnitType() == LexicalUnit.SAC_COUNTERS_FUNCTION) {
final CSSFunctionValue functionValue = CSSValueFactory.parseFunction(value);
if (functionValue == null) {
return null;
}
contentList.add(functionValue);
} else if (value.getLexicalUnitType() == LexicalUnit.SAC_ATTR) {
final CSSAttrFunction attrFn = CSSValueFactory.parseAttrFunction(value);
if (attrFn == null) {
return null;
}
contentList.add(attrFn);
} else if (value.getLexicalUnitType() == LexicalUnit.SAC_OPERATOR_COMMA) {
final CSSValue[] values =
(CSSValue[]) contentList.toArray(new CSSValue[contentList.size()]);
contents.add(new CSSValueList(values));
contentList.clear();
}
value = value.getNextLexicalUnit();
}
final CSSValue[] values = (CSSValue[]) contentList.toArray(new CSSValue[contentList.size()]);
contents.add(new CSSValueList(values));
return new CSSValueList(contents);
}
/** Implements {@link ValueManager#createValue(LexicalUnit,CSSEngine)}. */
public Value createValue(LexicalUnit lu, CSSEngine engine) throws DOMException {
switch (lu.getLexicalUnitType()) {
case LexicalUnit.SAC_INHERIT:
return ValueConstants.INHERIT_VALUE;
case LexicalUnit.SAC_URI:
return new URIValue(
lu.getStringValue(), resolveURI(engine.getCSSBaseURI(), lu.getStringValue()));
case LexicalUnit.SAC_IDENT:
if (lu.getStringValue().equalsIgnoreCase(CSSConstants.CSS_NONE_VALUE)) {
return ValueConstants.NONE_VALUE;
}
}
throw createInvalidLexicalUnitDOMException(lu.getLexicalUnitType());
}
private CSSValue parseSingleSpacingValue(final LexicalUnit value) {
if (value == null) {
return null;
}
if (value.getLexicalUnitType() == LexicalUnit.SAC_IDENT) {
if (value.getStringValue().equalsIgnoreCase("normal")) {
return SpacingLimitReadHandler.NORMAL;
}
return null;
}
if (value.getLexicalUnitType() == LexicalUnit.SAC_PERCENTAGE) {
return CSSNumericValue.createValue(CSSNumericType.PERCENTAGE, value.getFloatValue());
}
return CSSValueFactory.createLengthValue(value);
}
public CSSValue createValue(StyleKey name, LexicalUnit value) {
if (value.getLexicalUnitType() == LexicalUnit.SAC_IDENT) {
if (value.getStringValue().equalsIgnoreCase("none")) {
return new CSSConstant("none");
}
}
return CSSValueFactory.createNumericValue(value);
}
protected CSSValue parseWidth(final LexicalUnit value) {
if (value.getLexicalUnitType() == LexicalUnit.SAC_IDENT) {
if (value.getStringValue().equalsIgnoreCase("dash")) {
return TextDecorationWidth.DASH;
}
if (value.getStringValue().equalsIgnoreCase("bold")) {
return TextDecorationWidth.BOLD;
}
}
return super.parseWidth(value);
}
/** Implements {@link ValueManager#createValue(LexicalUnit,CSSEngine)}. */
public Value createValue(LexicalUnit lu, CSSEngine engine) throws DOMException {
switch (lu.getLexicalUnitType()) {
case LexicalUnit.SAC_INHERIT:
return InheritValue.INSTANCE;
case LexicalUnit.SAC_IDENT:
if (lu.getStringValue().equalsIgnoreCase(CSSConstants.CSS_AUTO_VALUE)) {
return ValueConstants.AUTO_VALUE;
}
}
return super.createValue(lu, engine);
}
private void writeHex(LexicalUnit lu) {
write("#");
for (LexicalUnit current = lu; current != null; current = current.getNextLexicalUnit()) {
if (current.getLexicalUnitType() == LexicalUnit.SAC_INTEGER) {
String value = Integer.toHexString(current.getIntegerValue());
if (value.length() == 1) {
value = String.format("0%s", value);
}
write(value);
}
}
}
public Value createValue(LexicalUnit lu, CSSEngine engine) throws DOMException {
switch (lu.getLexicalUnitType()) {
case LexicalUnit.SAC_IDENT:
String s = lu.getStringValue().toLowerCase().intern();
Object v = values.get(s);
if (v == null) {
throw createInvalidIdentifierDOMException(lu.getStringValue());
}
return (Value) v;
}
return super.createValue(lu, engine);
}
private float calculateInternal(
final LexicalUnit lu, final Styles parentStyles, final Styles styles) {
final DisplayDevice device = DisplayDevice.getCurrent();
float baseFontSize = DEFAULT_FONT_SIZE_POINTS * device.getVerticalPPI() / 72;
if (parentStyles != null) {
baseFontSize = parentStyles.getFontSize();
}
if (lu == null) {
return baseFontSize;
} else if (isLength(lu)) {
return getFloatLength(lu, baseFontSize, device.getVerticalPPI());
} else if (isPercentage(lu)) {
return baseFontSize * lu.getFloatValue() / 100;
} else if (lu.getLexicalUnitType() == LexicalUnit.SAC_IDENT) {
final String s = lu.getStringValue();
if (s.equals(CSS.XX_SMALL)) {
return baseFontSize * FONT_FACTOR_XX_SMALL;
} else if (s.equals(CSS.X_SMALL)) {
return baseFontSize * FONT_FACTOR_X_SMALL;
} else if (s.equals(CSS.SMALL)) {
return baseFontSize * FONT_FACTOR_SMALL;
} else if (s.equals(CSS.MEDIUM)) {
return baseFontSize * FONT_FACTOR_MEDIUM;
} else if (s.equals(CSS.LARGE)) {
return baseFontSize * FONT_FACTOR_LARGE;
} else if (s.equals(CSS.X_LARGE)) {
return baseFontSize * FONT_FACTOR_X_LARGE;
} else if (s.equals(CSS.XX_LARGE)) {
return baseFontSize * FONT_FACTOR_XX_LARGE;
} else if (s.equals(CSS.SMALLER)) {
return baseFontSize / FONT_SIZE_FACTOR;
} else if (s.equals(CSS.LARGER)) {
return baseFontSize * FONT_SIZE_FACTOR;
} else {
return baseFontSize;
}
} else {
return baseFontSize;
}
}
public CSSValue createValue(StyleKey name, LexicalUnit value) {
if (value.getLexicalUnitType() == LexicalUnit.SAC_IDENT) {
final String stringValue = value.getStringValue();
if (stringValue.equalsIgnoreCase("auto")) {
return CSSAutoValue.getInstance();
}
}
final CSSValue firstPosition = parseFirstPosition(value);
if (firstPosition == null) {
return null;
}
value = value.getNextLexicalUnit();
final CSSValue secondPosition = parseSecondPosition(value, firstPosition);
if (secondPosition == null) {
return null;
}
return createResultList(firstPosition, secondPosition);
}
/**
* Returns true if the given lexical unit represents a font size.
*
* @param lu LexicalUnit to check.
*/
public static boolean isFontSize(final LexicalUnit lu) {
if (lu == null) {
return false;
} else if (isLength(lu)) {
return true;
} else if (isPercentage(lu)) {
return true;
} else if (lu.getLexicalUnitType() == LexicalUnit.SAC_IDENT) {
final String s = lu.getStringValue();
return s.equals(CSS.XX_SMALL)
|| s.equals(CSS.X_SMALL)
|| s.equals(CSS.SMALL)
|| s.equals(CSS.MEDIUM)
|| s.equals(CSS.LARGE)
|| s.equals(CSS.X_LARGE)
|| s.equals(CSS.XX_LARGE)
|| s.equals(CSS.SMALLER)
|| s.equals(CSS.LARGER);
} else {
return false;
}
}
void write(LexicalUnit lu) {
short type = lu.getLexicalUnitType();
switch (type) {
case LexicalUnit.SAC_URI:
write("url(");
write(lu.getStringValue());
write(")");
break;
case LexicalUnit.SAC_STRING_VALUE:
write('"');
write(lu.getStringValue());
write('"');
break;
case LexicalUnit.SAC_IDENT:
write(lu.getStringValue());
break;
case LexicalUnit.SAC_REAL:
write(lu.getFloatValue());
break;
case LexicalUnit.SAC_PIXEL:
write(lu.getFloatValue());
write("px");
break;
case LexicalUnit.SAC_MILLIMETER:
write(lu.getFloatValue());
write("mm");
break;
case LexicalUnit.SAC_CENTIMETER:
write(lu.getFloatValue());
write("cm");
break;
case LexicalUnit.SAC_PERCENTAGE:
write(lu.getFloatValue());
write("%");
break;
case LexicalUnit.SAC_POINT:
write(lu.getFloatValue());
write("pt");
break;
case LexicalUnit.SAC_EM:
write(lu.getFloatValue());
write("em");
break;
case LexicalUnit.SAC_INTEGER:
write(lu.getIntegerValue());
break;
case LexicalUnit.SAC_FUNCTION:
write(lu.getFunctionName());
write("(");
write(lu.getParameters(), "");
write(")");
break;
case LexicalUnit.SAC_RGBCOLOR:
// Use hexadecimal notation instead
writeHex(lu.getParameters());
break;
case LexicalUnit.SAC_OPERATOR_COMMA:
write(",");
break;
case LexicalUnit.SAC_INHERIT:
write("inherit");
break;
default:
throw new UnsupportedOperationException("Lexical unit type " + type + " is not handled");
}
}