/*
* JBoss, Home of Professional Open Source
* Copyright 2013, Red Hat, Inc. and individual contributors
* by the @authors tag. See the copyright.txt in the distribution for a
* full listing of individual contributors.
*
* This 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 software 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 software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.richfaces.resource.css;
import org.w3c.dom.css.CSSCharsetRule;
import org.w3c.dom.css.CSSFontFaceRule;
import org.w3c.dom.css.CSSImportRule;
import org.w3c.dom.css.CSSMediaRule;
import org.w3c.dom.css.CSSPageRule;
import org.w3c.dom.css.CSSRule;
import org.w3c.dom.css.CSSRuleList;
import org.w3c.dom.css.CSSStyleDeclaration;
import org.w3c.dom.css.CSSStyleRule;
import org.w3c.dom.css.CSSStyleSheet;
import org.w3c.dom.css.CSSUnknownRule;
/**
* @author Nick Belaevski
*
*/
public abstract class AbstractCSSVisitor {
public void visitStyleSheet(CSSStyleSheet styleSheet) {
startStyleSheet(styleSheet);
CSSRuleList rules = styleSheet.getCssRules();
int length = rules.getLength();
for (int i = 0; i < length; i++) {
CSSRule rule = rules.item(i);
visitRule(rule);
}
endStyleSheet(styleSheet);
}
public void visitRule(CSSRule rule) {
switch (rule.getType()) {
case CSSRule.UNKNOWN_RULE:
visitUnknownRule((CSSUnknownRule) rule);
break;
case CSSRule.STYLE_RULE:
visitStyleRule((CSSStyleRule) rule);
break;
case CSSRule.CHARSET_RULE:
visitCharsetRule((CSSCharsetRule) rule);
break;
case CSSRule.IMPORT_RULE:
visitImportRule((CSSImportRule) rule);
break;
case CSSRule.MEDIA_RULE:
visitMediaRule((CSSMediaRule) rule);
break;
case CSSRule.FONT_FACE_RULE:
visitFontFaceRule((CSSFontFaceRule) rule);
break;
case CSSRule.PAGE_RULE:
visitPageRule((CSSPageRule) rule);
break;
default:
throw new IllegalArgumentException();
}
}
protected abstract void startStyleSheet(CSSStyleSheet styleSheet);
protected abstract void endStyleSheet(CSSStyleSheet styleSheet);
public abstract void visitUnknownRule(CSSUnknownRule rule);
public void visitStyleRule(CSSStyleRule rule) {
startStyleRule(rule);
CSSStyleDeclaration style = rule.getStyle();
visitStyleDeclaration(style);
endStyleRule(rule);
}
protected abstract void startStyleRule(CSSStyleRule rule);
protected abstract void endStyleRule(CSSStyleRule rule);
public abstract void visitCharsetRule(CSSCharsetRule rule);
public abstract void visitImportRule(CSSImportRule rule);
public void visitMediaRule(CSSMediaRule rule) {
startMediaRule(rule);
CSSRuleList rules = rule.getCssRules();
int length = rules.getLength();
for (int i = 0; i < length; i++) {
CSSRule childRule = rules.item(i);
visitRule(childRule);
}
endMediaRule(rule);
}
protected abstract void startMediaRule(CSSMediaRule rule);
protected abstract void endMediaRule(CSSMediaRule rule);
public void visitFontFaceRule(CSSFontFaceRule rule) {
startFontRule(rule);
CSSStyleDeclaration style = rule.getStyle();
visitStyleDeclaration(style);
endFontRule(rule);
}
protected abstract void startFontRule(CSSFontFaceRule rule);
protected abstract void endFontRule(CSSFontFaceRule rule);
public void visitPageRule(CSSPageRule rule) {
startPageRule(rule);
CSSStyleDeclaration style = rule.getStyle();
visitStyleDeclaration(style);
endPageRule(rule);
}
protected abstract void startPageRule(CSSPageRule rule);
protected abstract void endPageRule(CSSPageRule rule);
public abstract void visitStyleDeclaration(CSSStyleDeclaration styleDeclaration);
}