com.gargoylesoftware.css.dom.CSSImportRuleImpl 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.CSSImportRule;
import org.w3c.dom.css.CSSRule;
import org.w3c.dom.css.CSSStyleSheet;
import org.w3c.dom.stylesheets.MediaList;
import com.gargoylesoftware.css.parser.CSSException;
import com.gargoylesoftware.css.parser.CSSOMParser;
import com.gargoylesoftware.css.parser.InputSource;
import com.gargoylesoftware.css.util.LangUtils;
/**
* Implementation of {@link CSSImportRule}.
*
* TODO: Implement getStyleSheet()
*
* @author Ronald Brill
*/
public class CSSImportRuleImpl extends AbstractCSSRuleImpl implements CSSImportRule {
private String href_;
private MediaList media_;
public void setHref(final String href) {
href_ = href;
}
public void setMedia(final MediaList media) {
media_ = media;
}
public CSSImportRuleImpl(
final CSSStyleSheetImpl parentStyleSheet,
final CSSRule parentRule,
final String href,
final MediaList media) {
super(parentStyleSheet, parentRule);
href_ = href;
media_ = media;
}
@Override
public short getType() {
return IMPORT_RULE;
}
/**
* {@inheritDoc}
*/
@Override
public String getCssText() {
final StringBuilder sb = new StringBuilder();
sb.append("@import");
final String href = getHref();
if (null != href) {
sb.append(" url(").append(href).append(")");
}
final MediaList ml = getMedia();
if (null != ml && ml.getLength() > 0) {
sb.append(" ").append(((MediaListImpl) getMedia()).getMediaText());
}
sb.append(";");
return sb.toString();
}
@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 an import rule
if (r.getType() == CSSRule.IMPORT_RULE) {
href_ = ((CSSImportRuleImpl) r).href_;
media_ = ((CSSImportRuleImpl) r).media_;
}
else {
throw new DOMExceptionImpl(
DOMException.INVALID_MODIFICATION_ERR,
DOMExceptionImpl.EXPECTING_IMPORT_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 getHref() {
return href_;
}
@Override
public MediaList getMedia() {
return media_;
}
@Override
public CSSStyleSheet getStyleSheet() {
return null;
}
@Override
public String toString() {
return getCssText();
}
@Override
public boolean equals(final Object obj) {
if (this == obj) {
return true;
}
if (!(obj instanceof CSSImportRule)) {
return false;
}
final CSSImportRule cir = (CSSImportRule) obj;
return super.equals(obj)
&& LangUtils.equals(getHref(), cir.getHref())
&& LangUtils.equals(getMedia(), cir.getMedia());
}
@Override
public int hashCode() {
int hash = super.hashCode();
hash = LangUtils.hashCode(hash, href_);
hash = LangUtils.hashCode(hash, media_);
return hash;
}
}