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A CSS parser which implements SAC (the Simple API for CSS).
/*
* CSS Parser Project
*
* Copyright (C) 1999-2011 David Schweinsberg. All rights reserved.
*
* This library 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 of the License, or (at your option) any later version.
*
* This library 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 library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* To contact the authors of the library:
*
* http://cssparser.sourceforge.net/
* mailto:[email protected]
*
*/
package com.steadystate.css.dom;
import java.io.IOException;
import java.io.Serializable;
import java.io.StringReader;
import org.w3c.dom.DOMException;
import org.w3c.dom.css.CSSPageRule;
import org.w3c.dom.css.CSSRule;
import org.w3c.dom.css.CSSStyleDeclaration;
import org.w3c.css.sac.CSSException;
import org.w3c.css.sac.InputSource;
import com.steadystate.css.parser.CSSOMParser;
import com.steadystate.css.util.LangUtils;
/**
* Implementation of {@link CSSPageRule}.
*
* TODO: Implement setSelectorText()
*
* @author David Schweinsberg
*/
public class CSSPageRuleImpl extends AbstractCSSRuleImpl implements CSSPageRule, Serializable {
private static final long serialVersionUID = -6007519872104320812L;
private String ident_;
private String pseudoPage_;
private CSSStyleDeclaration style_;
public CSSPageRuleImpl(
final CSSStyleSheetImpl parentStyleSheet,
final CSSRule parentRule,
final String ident,
final String pseudoPage) {
super(parentStyleSheet, parentRule);
ident_ = ident;
pseudoPage_ = pseudoPage;
}
public CSSPageRuleImpl() {
super();
}
public short getType() {
return PAGE_RULE;
}
public String getCssText() {
final String sel = getSelectorText();
return "@page "
+ sel + ((sel.length() > 0) ? " " : "")
+ "{"
+ getStyle().getCssText()
+ "}";
}
public void setCssText(final String cssText) throws DOMException {
final CSSStyleSheetImpl parentStyleSheet = getParentStyleSheetImpl();
if (parentStyleSheet != null && parentStyleSheet.isReadOnly()) {
throw new DOMExceptionImpl(
DOMException.NO_MODIFICATION_ALLOWED_ERR,
DOMExceptionImpl.READ_ONLY_STYLE_SHEET);
}
try {
final InputSource is = new InputSource(new StringReader(cssText));
final CSSOMParser parser = new CSSOMParser();
final CSSRule r = parser.parseRule(is);
// The rule must be a page rule
if (r.getType() == CSSRule.PAGE_RULE) {
ident_ = ((CSSPageRuleImpl) r).ident_;
pseudoPage_ = ((CSSPageRuleImpl) r).pseudoPage_;
style_ = ((CSSPageRuleImpl) r).style_;
}
else {
throw new DOMExceptionImpl(
DOMException.INVALID_MODIFICATION_ERR,
DOMExceptionImpl.EXPECTING_PAGE_RULE);
}
}
catch (final CSSException e) {
throw new DOMExceptionImpl(
DOMException.SYNTAX_ERR,
DOMExceptionImpl.SYNTAX_ERROR,
e.getMessage());
}
catch (final IOException e) {
throw new DOMExceptionImpl(
DOMException.SYNTAX_ERR,
DOMExceptionImpl.SYNTAX_ERROR,
e.getMessage());
}
}
public String getSelectorText() {
return ((ident_ != null) ? ident_ : "")
+ ((pseudoPage_ != null) ? ":" + pseudoPage_ : "");
}
public void setSelectorText(final String selectorText) throws DOMException {
}
public CSSStyleDeclaration getStyle() {
return style_;
}
public void setIdent(final String ident) {
ident_ = ident;
}
public void setPseudoPage(final String pseudoPage) {
pseudoPage_ = pseudoPage;
}
public void setStyle(final CSSStyleDeclarationImpl style) {
style_ = style;
}
@Override
public boolean equals(final Object obj) {
if (this == obj) {
return true;
}
if (!(obj instanceof CSSPageRule)) {
return false;
}
final CSSPageRule cpr = (CSSPageRule) obj;
return super.equals(obj)
&& LangUtils.equals(getSelectorText(), cpr.getSelectorText())
&& LangUtils.equals(getStyle(), cpr.getStyle());
}
@Override
public int hashCode() {
int hash = super.hashCode();
hash = LangUtils.hashCode(hash, ident_);
hash = LangUtils.hashCode(hash, pseudoPage_);
hash = LangUtils.hashCode(hash, style_);
return hash;
}
@Override
public String toString() {
return getCssText();
}
}