com.gargoylesoftware.css.dom.CSSStyleRuleImpl Maven / Gradle / Ivy
/*
* Copyright (c) 2018 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.IOException;
import java.io.StringReader;
import org.w3c.dom.DOMException;
import org.w3c.dom.css.CSSRule;
import org.w3c.dom.css.CSSStyleDeclaration;
import org.w3c.dom.css.CSSStyleRule;
import com.gargoylesoftware.css.parser.CSSException;
import com.gargoylesoftware.css.parser.CSSOMParser;
import com.gargoylesoftware.css.parser.InputSource;
import com.gargoylesoftware.css.parser.selector.SelectorList;
import com.gargoylesoftware.css.util.LangUtils;
/**
* Implementation of {@link CSSStyleRule}.
*
* @author Ronald Brill
*/
public class CSSStyleRuleImpl extends AbstractCSSRuleImpl implements CSSStyleRule {
private SelectorList selectors_;
private CSSStyleDeclaration style_;
public SelectorList getSelectors() {
return selectors_;
}
public void setSelectors(final SelectorList selectors) {
selectors_ = selectors;
}
public CSSStyleRuleImpl(final CSSStyleSheetImpl parentStyleSheet,
final CSSRule parentRule, final SelectorList selectors) {
super(parentStyleSheet, parentRule);
selectors_ = selectors;
}
@Override
public short getType() {
return STYLE_RULE;
}
/**
* {@inheritDoc}
*/
@Override
public String getCssText() {
final CSSStyleDeclaration style = getStyle();
if (null == style) {
return "";
}
final String selectorText = selectors_.toString();
final String styleText = style.toString();
if (null == styleText || styleText.length() == 0) {
return selectorText + " { }";
}
return selectorText + " { " + styleText + " }";
}
@Override
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 style rule
if (r.getType() == CSSRule.STYLE_RULE) {
selectors_ = ((CSSStyleRuleImpl) r).selectors_;
style_ = ((CSSStyleRuleImpl) r).style_;
}
else {
throw new DOMExceptionImpl(
DOMException.INVALID_MODIFICATION_ERR,
DOMExceptionImpl.EXPECTING_STYLE_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());
}
}
@Override
public String getSelectorText() {
return selectors_.toString();
}
@Override
public void setSelectorText(final String selectorText) 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(selectorText));
final CSSOMParser parser = new CSSOMParser();
selectors_ = parser.parseSelectors(is);
}
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());
}
}
@Override
public CSSStyleDeclaration getStyle() {
return style_;
}
public void setStyle(final CSSStyleDeclaration style) {
style_ = style;
}
@Override
public String toString() {
return getCssText();
}
@Override
public boolean equals(final Object obj) {
if (this == obj) {
return true;
}
if (!(obj instanceof CSSStyleRule)) {
return false;
}
final CSSStyleRule csr = (CSSStyleRule) obj;
return super.equals(obj)
&& LangUtils.equals(getSelectorText(), csr.getSelectorText())
&& LangUtils.equals(getStyle(), csr.getStyle());
}
@Override
public int hashCode() {
int hash = super.hashCode();
hash = LangUtils.hashCode(hash, selectors_);
hash = LangUtils.hashCode(hash, style_);
return hash;
}
}