Examples with DefaultCSSUrlVisitor com.helger.css.decl.visit.DefaultCSSUrlVisitor used on opensource projects

Example 1 with DefaultCSSUrlVisitor

use of com.helger.css.decl.visit.DefaultCSSUrlVisitor in project ph-css by phax.

the class WikiVisitDataUrls method readFromStyleAttributeWithAPI.

public void readFromStyleAttributeWithAPI() {
    final String sStyle = "@import '/folder/foobar.css';\n" + "div{background:fixed url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAoAAAAKCAIAAAACUFjqAAAABGdBTUEAALGPC/xhBQAAAAlwSFlzAAALEgAACxIB0t1+/AAAAAd0SU1FB9EFBAoYMhVvMQIAAAAtSURBVHicY/z//z8DHoBH+v///yy4FDEyMjIwMDDhM3lgpaEuh7gTEzDiDxYA9HEPDF90e5YAAAAASUVORK5CYII=) !important;}\n" + "span { background-image:url('/my/folder/b.gif');}";
    final CascadingStyleSheet aCSS = CSSReader.readFromString(sStyle, ECSSVersion.CSS30);
    CSSVisitor.visitCSSUrl(aCSS, new DefaultCSSUrlVisitor() {

        // Called for each import
        @Override
        public void onImport(@Nonnull final CSSImportRule aImportRule) {
            System.out.println("Import: " + aImportRule.getLocationString());
        }

        // Call for URLs outside of URLs
        @Override
        public void onUrlDeclaration(@Nullable final ICSSTopLevelRule aTopLevelRule, @Nonnull final CSSDeclaration aDeclaration, @Nonnull final CSSExpressionMemberTermURI aURITerm) {
            final CSSURI aURI = aURITerm.getURI();
            if (aURI.isDataURL()) {
                final CSSDataURL aDataURL = aURI.getAsDataURL();
                System.out.println(aDeclaration.getProperty() + " - references data URL with " + aDataURL.getContentLength() + " bytes of content");
            } else
                System.out.println(aDeclaration.getProperty() + " - references regular URL: " + aURI.getURI());
        }
    });
}

Example 2 with DefaultCSSUrlVisitor

use of com.helger.css.decl.visit.DefaultCSSUrlVisitor in project ph-css by phax.

the class WikiVisitUrls method readFromStyleAttributeWithAPI.

public void readFromStyleAttributeWithAPI() {
    final String sStyle = "@import 'foobar.css';\n" + "div{background:fixed url(a.gif) !important;}\n" + "span { background-image:url('/my/folder/b.gif');}";
    final CascadingStyleSheet aCSS = CSSReader.readFromString(sStyle, ECSSVersion.CSS30);
    CSSVisitor.visitCSSUrl(aCSS, new DefaultCSSUrlVisitor() {

        // Called for each import
        @Override
        public void onImport(@Nonnull final CSSImportRule aImportRule) {
            System.out.println("Import: " + aImportRule.getLocationString() + " - " + getSourceLocationString(aImportRule.getSourceLocation()));
        }

        // Call for URLs outside of URLs
        @Override
        public void onUrlDeclaration(@Nullable final ICSSTopLevelRule aTopLevelRule, @Nonnull final CSSDeclaration aDeclaration, @Nonnull final CSSExpressionMemberTermURI aURITerm) {
            System.out.println(aDeclaration.getProperty() + " - references: " + aURITerm.getURIString() + " - " + getSourceLocationString(aURITerm.getSourceLocation()));
        }
    });
}

Example 3 with DefaultCSSUrlVisitor

use of com.helger.css.decl.visit.DefaultCSSUrlVisitor in project jmeter by apache.

the class CssParserCacheLoader method load.

@Override
public URLCollection load(Triple<String, URL, Charset> triple) throws Exception {
    final String cssContent = triple.getLeft();
    final URL baseUrl = triple.getMiddle();
    final Charset charset = triple.getRight();
    final CSSReaderSettings readerSettings = new CSSReaderSettings().setBrowserCompliantMode(true).setFallbackCharset(charset).setCSSVersion(ECSSVersion.CSS30).setCustomErrorHandler(new LoggingCSSParseErrorHandler()).setUseSourceLocation(false).setCustomExceptionHandler(new CSSParseExceptionCallback(baseUrl));
    if (IGNORE_ALL_CSS_ERRORS) {
        readerSettings.setInterpretErrorHandler(new DoNothingCSSInterpretErrorHandler());
    }
    final CascadingStyleSheet aCSS = CSSReader.readFromStringReader(cssContent, readerSettings);
    final URLCollection urls = new URLCollection(new ArrayList<>());
    if (aCSS == null) {
        LOG.warn("Failed parsing CSS: {}, got null CascadingStyleSheet", baseUrl);
        return urls;
    }
    CSSVisitor.visitCSSUrl(aCSS, new DefaultCSSUrlVisitor() {

        @Override
        public void onImport(CSSImportRule rule) {
            final String location = rule.getLocationString();
            if (!StringUtils.isEmpty(location)) {
                urls.addURL(location, baseUrl);
            }
        }

        // Call for URLs outside of URLs
        @Override
        public void onUrlDeclaration(final ICSSTopLevelRule aTopLevelRule, final CSSDeclaration aDeclaration, final CSSExpressionMemberTermURI aURITerm) {
        // NOOP
        // Browser fetch such urls only when CSS rule matches
        // so we disable this code
        }
    });
    return urls;
}