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/*
* Copyright (c) 2019-2020 Ronald Brill.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.gargoylesoftware.css.dom;
import java.io.Serializable;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import org.w3c.dom.DOMException;
import com.gargoylesoftware.css.parser.AbstractLocatable;
import com.gargoylesoftware.css.parser.CSSOMParser;
import com.gargoylesoftware.css.parser.LexicalUnit;
import com.gargoylesoftware.css.parser.LexicalUnit.LexicalUnitType;
import com.gargoylesoftware.css.parser.LexicalUnitImpl;
import com.gargoylesoftware.css.util.LangUtils;
/**
* The CSSValueImpl class can represent either a
* CSSPrimitiveValue or a CSSValueList so that
* the type can successfully change when using setCssText.
*
* @author Ronald Brill
*/
public class CSSValueImpl extends AbstractLocatable implements Serializable {
/**
* CSSValueType enum.
*/
public enum CSSValueType {
/** CSS_VALUE_LIST. */
CSS_VALUE_LIST,
/** CSS_INHERIT. */
CSS_INHERIT,
/** CSS_PRIMITIVE_VALUE. */
CSS_PRIMITIVE_VALUE
}
/**
* CSSPrimitiveValueType enum.
*/
public enum CSSPrimitiveValueType {
/** CSS_IDENT. */
CSS_IDENT,
/** CSS_NUMBER. */
CSS_NUMBER,
/** CSS_EMS. */
CSS_EMS,
/** CSS_EXS. */
CSS_EXS,
/** CSS_REM. */
CSS_REM,
/** CSS_CH. */
CSS_CH,
/** CSS_VW. */
CSS_VW,
/** CSS_VH. */
CSS_VH,
/** CSS_VMIN. */
CSS_VMIN,
/** CSS_VMAX. */
CSS_VMAX,
/** CSS_PX. */
CSS_PX,
/** CSS_IN. */
CSS_IN,
/** CSS_CM. */
CSS_CM,
/** CSS_MM. */
CSS_MM,
/** CSS_PT. */
CSS_PT,
/** CSS_PC. */
CSS_PC,
/** CSS_PERCENTAGE. */
CSS_PERCENTAGE,
/** CSS_URI. */
CSS_URI,
/** COUNTERS_FUNCTION. */
COUNTERS_FUNCTION,
/** CSS_RGBCOLOR. */
CSS_RGBCOLOR,
/** CSS_DEG. */
CSS_DEG,
/** CSS_GRAD. */
CSS_GRAD,
/** CSS_RAD. */
CSS_RAD,
/** CSS_MS. */
CSS_MS,
/** CSS_S. */
CSS_S,
/** CSS_HZ. */
CSS_HZ,
/** CSS_KHZ. */
CSS_KHZ,
/** CSS_ATTR. */
CSS_ATTR,
/** CSS_RECT. */
CSS_RECT,
/** CSS_STRING. */
CSS_STRING,
/** CSS_DIMENSION. */
CSS_DIMENSION,
/** CSS_COUNTER. */
CSS_COUNTER,
/** CSS_UNKNOWN. */
CSS_UNKNOWN
}
private Object value_;
/**
* @return the value
*/
public Object getValue() {
return value_;
}
/**
* Constructor.
* @param value the lexical unit value
* @param forcePrimitive true or false
*/
public CSSValueImpl(final LexicalUnit value, final boolean forcePrimitive) {
LexicalUnit parameters = null;
if (value != null) {
parameters = value.getParameters();
}
if (!forcePrimitive && value != null && (value.getNextLexicalUnit() != null)) {
value_ = getValues(value);
}
else if (parameters != null) {
if (value.getLexicalUnitType() == LexicalUnitType.RECT_FUNCTION) {
// Rect
value_ = new RectImpl(value.getParameters());
}
else if (value.getLexicalUnitType() == LexicalUnitType.RGBCOLOR) {
// RGBColor
value_ = new RGBColorImpl(value.getParameters());
}
else if (value.getLexicalUnitType() == LexicalUnitType.COUNTER_FUNCTION) {
// Counter
value_ = new CounterImpl(false, value.getParameters());
}
else if (value.getLexicalUnitType() == LexicalUnitType.COUNTERS_FUNCTION) {
// Counter
value_ = new CounterImpl(true, value.getParameters());
}
else {
value_ = value;
}
}
else {
// We need to be a CSSPrimitiveValue
value_ = value;
}
if (value != null) {
setLocator(value.getLocator());
}
}
private static List getValues(final LexicalUnit value) {
final List values = new ArrayList<>();
LexicalUnit lu = value;
while (lu != null) {
values.add(new CSSValueImpl(lu, true));
lu = lu.getNextLexicalUnit();
}
return values;
}
/**
* Ctor.
* @param value the value
*/
public CSSValueImpl(final LexicalUnit value) {
this(value, false);
}
/**
* @return the css text
*/
public String getCssText() {
if (getCssValueType() == CSSValueType.CSS_VALUE_LIST) {
// Create the string from the LexicalUnits so we include the correct
// operators in the string
final StringBuilder sb = new StringBuilder();
final List list = (List) value_;
final Iterator it = list.iterator();
boolean separate = false;
while (it.hasNext()) {
final Object o = it.next();
final CSSValueImpl cssValue = (CSSValueImpl) o;
if (separate) {
if (cssValue.value_ instanceof LexicalUnit) {
final LexicalUnit lu = (LexicalUnit) cssValue.value_;
if (lu.getLexicalUnitType() != LexicalUnitType.OPERATOR_COMMA) {
sb.append(" ");
}
}
else {
sb.append(" ");
}
}
sb.append(o.toString());
separate = true;
}
return sb.toString();
}
return value_ != null ? value_.toString() : "";
}
/**
* Sets the css text.
* @param cssText the new css text
* @throws DOMException in case of error
*/
public void setCssText(final String cssText) throws DOMException {
try {
final CSSOMParser parser = new CSSOMParser();
final CSSValueImpl v2 = parser.parsePropertyValue(cssText);
value_ = v2.value_;
}
catch (final Exception e) {
throw new DOMExceptionImpl(
DOMException.SYNTAX_ERR,
DOMExceptionImpl.SYNTAX_ERROR,
e.getMessage());
}
}
/**
* @return the css value type
*/
public CSSValueType getCssValueType() {
if (value_ instanceof List) {
return CSSValueType.CSS_VALUE_LIST;
}
if ((value_ instanceof LexicalUnit)
&& (((LexicalUnit) value_).getLexicalUnitType() == LexicalUnitType.INHERIT)) {
return CSSValueType.CSS_INHERIT;
}
return CSSValueType.CSS_PRIMITIVE_VALUE;
}
/**
* @return the primitive type
*/
public CSSPrimitiveValueType getPrimitiveType() {
if (value_ instanceof LexicalUnit) {
final LexicalUnit lu = (LexicalUnit) value_;
switch (lu.getLexicalUnitType()) {
case INHERIT:
return CSSPrimitiveValueType.CSS_IDENT;
case INTEGER:
case REAL:
return CSSPrimitiveValueType.CSS_NUMBER;
case EM:
return CSSPrimitiveValueType.CSS_EMS;
case REM:
return CSSPrimitiveValueType.CSS_REM;
case EX:
return CSSPrimitiveValueType.CSS_EXS;
case CH:
return CSSPrimitiveValueType.CSS_CH;
case VW:
return CSSPrimitiveValueType.CSS_VW;
case VH:
return CSSPrimitiveValueType.CSS_VH;
case VMIN:
return CSSPrimitiveValueType.CSS_VMIN;
case VMAX:
return CSSPrimitiveValueType.CSS_VMAX;
case PIXEL:
return CSSPrimitiveValueType.CSS_PX;
case INCH:
return CSSPrimitiveValueType.CSS_IN;
case CENTIMETER:
return CSSPrimitiveValueType.CSS_CM;
case MILLIMETER:
return CSSPrimitiveValueType.CSS_MM;
case POINT:
return CSSPrimitiveValueType.CSS_PT;
case PICA:
return CSSPrimitiveValueType.CSS_PC;
case PERCENTAGE:
return CSSPrimitiveValueType.CSS_PERCENTAGE;
case URI:
return CSSPrimitiveValueType.CSS_URI;
case COUNTER_FUNCTION:
// case COUNTERS_FUNCTION:
return CSSPrimitiveValueType.CSS_COUNTER;
// case RGBCOLOR:
// return CSS_RGBCOLOR;
case DEGREE:
return CSSPrimitiveValueType.CSS_DEG;
case GRADIAN:
return CSSPrimitiveValueType.CSS_GRAD;
case RADIAN:
return CSSPrimitiveValueType.CSS_RAD;
case MILLISECOND:
return CSSPrimitiveValueType.CSS_MS;
case SECOND:
return CSSPrimitiveValueType.CSS_S;
case HERTZ:
return CSSPrimitiveValueType.CSS_HZ;
case KILOHERTZ:
return CSSPrimitiveValueType.CSS_KHZ;
case IDENT:
return CSSPrimitiveValueType.CSS_IDENT;
case STRING_VALUE:
return CSSPrimitiveValueType.CSS_STRING;
case ATTR:
return CSSPrimitiveValueType.CSS_ATTR;
// case RECT_FUNCTION:
// return CSSPrimitiveValueType.CSS_RECT;
case UNICODERANGE:
case SUB_EXPRESSION:
case FUNCTION:
return CSSPrimitiveValueType.CSS_STRING;
case DIMENSION:
return CSSPrimitiveValueType.CSS_DIMENSION;
default:
return CSSPrimitiveValueType.CSS_UNKNOWN;
}
}
else if (value_ instanceof RectImpl) {
return CSSPrimitiveValueType.CSS_RECT;
}
else if (value_ instanceof RGBColorImpl) {
return CSSPrimitiveValueType.CSS_RGBCOLOR;
}
else if (value_ instanceof CounterImpl) {
return CSSPrimitiveValueType.CSS_COUNTER;
}
return CSSPrimitiveValueType.CSS_UNKNOWN;
}
/**
* @return the lexical unit type
*/
public LexicalUnit.LexicalUnitType getLexicalUnitType() {
if (value_ instanceof LexicalUnit) {
return ((LexicalUnit) value_).getLexicalUnitType();
}
return null;
}
/**
* Sets the double value to a new value.
*
* @param doubleValue the new value
* @throws DOMException in case of error
*/
public void setDoubleValue(final double doubleValue) throws DOMException {
value_ = LexicalUnitImpl.createNumber(null, doubleValue);
}
/**
* @return the double value.
*
* @throws DOMException in case of error
*/
public double getDoubleValue() throws DOMException {
if (value_ instanceof LexicalUnit) {
final LexicalUnit lu = (LexicalUnit) value_;
return lu.getDoubleValue();
}
throw new DOMExceptionImpl(
DOMException.INVALID_ACCESS_ERR,
DOMExceptionImpl.FLOAT_ERROR);
// We need to attempt a conversion
// return 0;
}
/**
* @return the string value.
* @throws DOMException case of error
*/
public String getStringValue() throws DOMException {
if (value_ instanceof LexicalUnit) {
final LexicalUnit lu = (LexicalUnit) value_;
if ((lu.getLexicalUnitType() == LexicalUnitType.IDENT)
|| (lu.getLexicalUnitType() == LexicalUnitType.STRING_VALUE)
|| (lu.getLexicalUnitType() == LexicalUnitType.URI)
|| (lu.getLexicalUnitType() == LexicalUnitType.INHERIT)
|| (lu.getLexicalUnitType() == LexicalUnitType.ATTR)) {
return lu.getStringValue();
}
// for rgba values we are using this type
if (lu.getLexicalUnitType() == LexicalUnitType.FUNCTION) {
return lu.toString();
}
}
else if (value_ instanceof List) {
return null;
}
throw new DOMExceptionImpl(
DOMException.INVALID_ACCESS_ERR,
DOMExceptionImpl.STRING_ERROR);
}
/**
* @return the counter value
* @throws DOMException in case of error
*/
public CounterImpl getCounterValue() throws DOMException {
if (value_ instanceof CounterImpl) {
return (CounterImpl) value_;
}
throw new DOMExceptionImpl(
DOMException.INVALID_ACCESS_ERR,
DOMExceptionImpl.COUNTER_ERROR);
}
/**
* @return the rect
* @throws DOMException in case of error
*/
public RectImpl getRectValue() throws DOMException {
if (value_ instanceof RectImpl) {
return (RectImpl) value_;
}
throw new DOMExceptionImpl(
DOMException.INVALID_ACCESS_ERR,
DOMExceptionImpl.RECT_ERROR);
}
/**
* @return the rgb
* @throws DOMException in case of error
*/
public RGBColorImpl getRGBColorValue() throws DOMException {
if (value_ instanceof RGBColorImpl) {
return (RGBColorImpl) value_;
}
throw new DOMExceptionImpl(
DOMException.INVALID_ACCESS_ERR,
DOMExceptionImpl.RGBCOLOR_ERROR);
}
/**
* @return the length
* @throws DOMException in case of error
*/
@SuppressWarnings("unchecked")
public int getLength() {
if (value_ instanceof List) {
return ((List) value_).size();
}
return 0;
}
/**
* @param index the position
* @return the value at the position
* @throws DOMException in case of error
*/
@SuppressWarnings("unchecked")
public CSSValueImpl item(final int index) {
if (value_ instanceof List) {
final List list = (List) value_;
return list.get(index);
}
return null;
}
@Override
public String toString() {
return getCssText();
}
@Override
public boolean equals(final Object obj) {
if (this == obj) {
return true;
}
if (!(obj instanceof CSSValueImpl)) {
return false;
}
final CSSValueImpl cv = (CSSValueImpl) obj;
// TODO to be improved!
return super.equals(obj)
&& (getCssValueType() == cv.getCssValueType())
&& LangUtils.equals(getCssText(), cv.getCssText());
}
@Override
public int hashCode() {
int hash = super.hashCode();
hash = LangUtils.hashCode(hash, value_);
return hash;
}
}
