/*
* {{{ header & license
* Copyright (c) 2007 Wisconsin Court System
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
* as published by the Free Software Foundation; either version 2.1
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
* }}}
*/
package org.xhtmlrenderer.css.parser.property;
import java.util.ArrayList;
import java.util.BitSet;
import java.util.List;
import org.w3c.dom.css.CSSPrimitiveValue;
import org.xhtmlrenderer.css.constants.CSSName;
import org.xhtmlrenderer.css.constants.IdentValue;
import org.xhtmlrenderer.css.parser.CSSParseException;
import org.xhtmlrenderer.css.parser.PropertyValue;
import org.xhtmlrenderer.css.sheet.PropertyDeclaration;
public abstract class AbstractPropertyBuilder implements PropertyBuilder {
public List buildDeclarations(CSSName cssName, List values, int origin, boolean important) {
return buildDeclarations(cssName, values, origin, important, true);
}
protected void checkValueCount(CSSName cssName, int expected, int found) {
if (expected != found) {
throw new CSSParseException("Found " + found + " value(s) for " +
cssName + " when " + expected + " value(s) were expected", -1);
}
}
protected void checkValueCount(CSSName cssName, int min, int max, int found) {
if (! (found >= min && found <= max)) {
throw new CSSParseException("Found " + found + " value(s) for " +
cssName + " when between " + min + " and " + max + " value(s) were expected", -1);
}
}
protected void checkIdentType(CSSName cssName, CSSPrimitiveValue value) {
if (value.getPrimitiveType() != CSSPrimitiveValue.CSS_IDENT) {
throw new CSSParseException("Value for " + cssName + " must be an identifier", -1);
}
}
protected void checkIdentOrURIType(CSSName cssName, CSSPrimitiveValue value) {
int type = value.getPrimitiveType();
if (type != CSSPrimitiveValue.CSS_IDENT && type != CSSPrimitiveValue.CSS_URI) {
throw new CSSParseException("Value for " + cssName + " must be an identifier or a URI", -1);
}
}
protected void checkIdentOrColorType(CSSName cssName, CSSPrimitiveValue value) {
int type = value.getPrimitiveType();
if (type != CSSPrimitiveValue.CSS_IDENT && type != CSSPrimitiveValue.CSS_RGBCOLOR) {
throw new CSSParseException("Value for " + cssName + " must be an identifier or a color", -1);
}
}
protected void checkIdentOrIntegerType(CSSName cssName, CSSPrimitiveValue value) {
int type = value.getPrimitiveType();
if ((type != CSSPrimitiveValue.CSS_IDENT &&
type != CSSPrimitiveValue.CSS_NUMBER) ||
(type == CSSPrimitiveValue.CSS_NUMBER &&
(int)value.getFloatValue(CSSPrimitiveValue.CSS_NUMBER) !=
Math.round(value.getFloatValue(CSSPrimitiveValue.CSS_NUMBER)))) {
throw new CSSParseException("Value for " + cssName + " must be an identifier or an integer", -1);
}
}
protected void checkInteger(CSSName cssName, CSSPrimitiveValue value) {
int type = value.getPrimitiveType();
if (type != CSSPrimitiveValue.CSS_NUMBER ||
(type == CSSPrimitiveValue.CSS_NUMBER &&
(int)value.getFloatValue(CSSPrimitiveValue.CSS_NUMBER) !=
Math.round(value.getFloatValue(CSSPrimitiveValue.CSS_NUMBER)))) {
throw new CSSParseException("Value for " + cssName + " must be an integer", -1);
}
}
protected void checkIdentOrLengthType(CSSName cssName, CSSPrimitiveValue value) {
int type = value.getPrimitiveType();
if (type != CSSPrimitiveValue.CSS_IDENT && ! isLength(value)) {
throw new CSSParseException("Value for " + cssName + " must be an identifier or a length", -1);
}
}
protected void checkIdentOrNumberType(CSSName cssName, CSSPrimitiveValue value) {
int type = value.getPrimitiveType();
if (type != CSSPrimitiveValue.CSS_IDENT && type != CSSPrimitiveValue.CSS_NUMBER) {
throw new CSSParseException("Value for " + cssName + " must be an identifier or a length", -1);
}
}
protected void checkIdentLengthOrPercentType(CSSName cssName, CSSPrimitiveValue value) {
int type = value.getPrimitiveType();
if (type != CSSPrimitiveValue.CSS_IDENT && ! isLength(value) && type != CSSPrimitiveValue.CSS_PERCENTAGE) {
throw new CSSParseException("Value for " + cssName + " must be an identifier, length, or percentage", -1);
}
}
protected void checkLengthOrPercentType(CSSName cssName, CSSPrimitiveValue value) {
int type = value.getPrimitiveType();
if (! isLength(value) && type != CSSPrimitiveValue.CSS_PERCENTAGE) {
throw new CSSParseException("Value for " + cssName + " must be a length or percentage", -1);
}
}
protected void checkLengthType(CSSName cssName, CSSPrimitiveValue value) {
if (! isLength(value)) {
throw new CSSParseException("Value for " + cssName + " must be a length", -1);
}
}
protected void checkNumberType(CSSName cssName, CSSPrimitiveValue value) {
if (value.getPrimitiveType() != CSSPrimitiveValue.CSS_NUMBER) {
throw new CSSParseException("Value for " + cssName + " must be a number", -1);
}
}
protected void checkStringType(CSSName cssName, CSSPrimitiveValue value) {
if (value.getPrimitiveType() != CSSPrimitiveValue.CSS_STRING) {
throw new CSSParseException("Value for " + cssName + " must be a string", -1);
}
}
protected void checkIdentOrString(CSSName cssName, CSSPrimitiveValue value) {
short type = value.getPrimitiveType();
if (type != CSSPrimitiveValue.CSS_STRING && type != CSSPrimitiveValue.CSS_IDENT) {
throw new CSSParseException("Value for " + cssName + " must be an identifier or string", -1);
}
}
protected void checkIdentLengthNumberOrPercentType(CSSName cssName, CSSPrimitiveValue value) {
int type = value.getPrimitiveType();
if (type != CSSPrimitiveValue.CSS_IDENT &&
! isLength(value) &&
type != CSSPrimitiveValue.CSS_PERCENTAGE &&
type != CSSPrimitiveValue.CSS_NUMBER) {
throw new CSSParseException("Value for " + cssName + " must be an identifier, length, or percentage", -1);
}
}
protected boolean isLength(CSSPrimitiveValue value) {
int unit = value.getPrimitiveType();
return unit == CSSPrimitiveValue.CSS_EMS || unit == CSSPrimitiveValue.CSS_EXS
|| unit == CSSPrimitiveValue.CSS_PX || unit == CSSPrimitiveValue.CSS_IN
|| unit == CSSPrimitiveValue.CSS_CM || unit == CSSPrimitiveValue.CSS_MM
|| unit == CSSPrimitiveValue.CSS_PT || unit == CSSPrimitiveValue.CSS_PC
|| (unit == CSSPrimitiveValue.CSS_NUMBER && value.getFloatValue(CSSPrimitiveValue.CSS_IN) == 0.0f);
}
protected void checkValidity(CSSName cssName, BitSet validValues, IdentValue value) {
if (! validValues.get(value.FS_ID)) {
throw new CSSParseException("Ident " + value + " is an invalid or unsupported value for " + cssName, -1);
}
}
protected IdentValue checkIdent(CSSName cssName, CSSPrimitiveValue value) {
IdentValue result = IdentValue.valueOf(value.getStringValue());
if (result == null) {
throw new CSSParseException("Value " + value.getStringValue() + " is not a recognized identifier", -1);
}
((PropertyValue)value).setIdentValue(result);
return result;
}
protected PropertyDeclaration copyOf(PropertyDeclaration decl, CSSName newName) {
return new PropertyDeclaration(newName, decl.getValue(), decl.isImportant(), decl.getOrigin());
}
protected void checkInheritAllowed(CSSPrimitiveValue value, boolean inheritAllowed) {
if (value.getCssValueType() == CSSPrimitiveValue.CSS_INHERIT && ! inheritAllowed) {
throw new CSSParseException("Invalid use of inherit", -1);
}
}
protected List checkInheritAll(CSSName[] all, List values, int origin, boolean important, boolean inheritAllowed) {
if (values.size() == 1) {
CSSPrimitiveValue value = (CSSPrimitiveValue)values.get(0);
checkInheritAllowed(value, inheritAllowed);
if (value.getCssValueType() == CSSPrimitiveValue.CSS_INHERIT) {
List result = new ArrayList(all.length);
for (int i = 0; i < all.length; i++) {
result.add(
new PropertyDeclaration(all[i], value, important, origin));
}
return result;
}
}
return null;
}
}