Examples of org.w3c.css.sac.Parser

org.w3c.css.sac.Parser
Basic interface for CSS (Simple API for CSS) parsers.
All CSS parsers must implement this basic interface: it allows applications to register handlers for different types of events and to initiate a parse from a URI, or a character stream.

All CSS parsers must also implement a zero-argument constructor (though other constructors are also allowed).

CSS parsers are reusable but not re-entrant: the application may reuse a parser object (possibly with a different input source) once the first parse has completed successfully, but it may not invoke the parse() methods recursively within a parse.
@version $Revision: 1.3 $ @author Philippe Le Hegaret @see DocumentHandler @see ErrorHandler @see InputSource

   */
  public LexicalUnit parseLexicalStyleValue (final String value)
  {
    try
    {
      final Parser parser = getParser();
      synchronized(parser)
      {
        final StyleSheetHandler handler = new StyleSheetHandler();
        handler.init (null, null, -1, registry, null);
        final InputSource source = new InputSource();
        source.setCharacterStream(new StringReader(value));
        handler.initParseContext(source);
        parser.setDocumentHandler(handler);
        return parser.parsePropertyValue(source);
      }
    }
    catch (Exception e)
    {
      e.printStackTrace();

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      throw new NullPointerException("Name is null");
    }


    try
    {
      final Parser parser = getParser();
      synchronized(parser)
      {
        final StyleSheetHandler handler = new StyleSheetHandler();
        setupNamespaces(namespaces, handler);
        handler.init (resourceManager, baseURL, -1, registry, null);


        final InputSource source = new InputSource();
        source.setCharacterStream(new StringReader(styleText));


        handler.initParseContext(source);
        handler.setStyleRule(baseRule);
        parser.setDocumentHandler(handler);
        parser.parseStyleDeclaration(source);
        final CSSDeclarationRule rule = handler.getStyleRule();
        CSSParserContext.getContext().destroy();
        return rule;
      }
    }

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      throw new NullPointerException("Value is null");
    }


    try
    {
      final Parser parser = getParser();
      synchronized(parser)
      {
        final StyleSheetHandler handler = new StyleSheetHandler();
        handler.init
            (resourceManager, baseURL, -1, StyleKeyRegistry.getRegistry(), null);


        setupNamespaces(namespaces, handler);
        final InputSource source = new InputSource();
        source.setCharacterStream(new StringReader(value));


        handler.initParseContext(source);
        handler.setStyleRule(baseRule);
        parser.setDocumentHandler(handler);
        final LexicalUnit lu = parser.parsePropertyValue(source);
        handler.property(name, lu, false);
        final CSSStyleRule rule = (CSSStyleRule) handler.getStyleRule();


        CSSParserContext.getContext().destroy();
        return rule;

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                          final ResourceKey context)
          throws ResourceCreationException, ResourceLoadingException
  {
    try
    {
      final Parser parser = CSSParserFactory.getInstance().createCSSParser();
      final ResourceKey key;
      final long version;
      if (context == null)
      {
        key = data.getKey();
        version = data.getVersion(manager);
      }
      else
      {
        key = context;
        version = -1;
      }
      final StyleSheetHandler handler = new StyleSheetHandler();
      handler.init (manager, key, version, StyleKeyRegistry.getRegistry(), null);
      parser.setDocumentHandler(handler);


      final InputSource inputSource = new InputSource();
      inputSource.setByteStream(data.getResourceAsStream(manager));


      handler.initParseContext(inputSource);
      handler.setStyleRule(new CSSStyleRule(null, null));
      parser.parseStyleDeclaration(inputSource);


      final DependencyCollector dependencies = handler.getDependencies();
      if (context != null)
      {
        dependencies.add(data.getKey(), data.getVersion(manager));

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    final Configuration config = LibLayoutBoot.getInstance().getGlobalConfig();
    final String parserClass =
            config.getConfigProperty("org.jfree.layouting.css.Parser");
    if (parserClass != null)
    {
      final Parser p = (Parser) ObjectUtilities.loadAndInstantiate
            (parserClass, CSSParserFactory.class, Parser.class);
      if (p != null)
      {
        p.setConditionFactory(new FixNamespaceConditionFactory(new CSSConditionFactory()));
        p.setSelectorFactory(new FixNamespaceSelectorFactory(new CSSSelectorFactory()));
        return p;
      }
    }
    try
    {
      final Parser p = new ParserFactory().makeParser();
      if (p == null)
      {
        return null;
      }
      p.setConditionFactory(new FixNamespaceConditionFactory(new CSSConditionFactory()));
      p.setSelectorFactory(new FixNamespaceSelectorFactory(new CSSSelectorFactory()));
      return p;
    }
    catch (Exception e)
    {
      throw new CSSParserInstantiationException();

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                         final ResourceKey context)
          throws ResourceCreationException, ResourceLoadingException
  {
    try
    {
      final Parser parser = CSSParserFactory.getInstance().createCSSParser();


      final ResourceKey key;
      final long version;
      if (context == null)
      {
        key = data.getKey();
        version = data.getVersion(manager);
      }
      else
      {
        key = context;
        version = -1;
      }


      final StyleSheetHandler handler = new StyleSheetHandler();
      handler.init
              (manager, key, version, StyleKeyRegistry.getRegistry(), null);
      parser.setDocumentHandler(handler);
      parser.setErrorHandler(handler);


      final InputStream stream = data.getResourceAsStream(manager);
      final InputSource inputSource = new InputSource();
      inputSource.setByteStream(stream);
      parser.parseStyleSheet(inputSource);


      final DependencyCollector dependencies = handler.getDependencies();
      if (context != null)
      {
        dependencies.add(data.getKey(), data.getVersion(manager));

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      throw new NullPointerException();
    }


    try
    {
      final Parser parser = getParser();
      synchronized(parser)
      {
        final StyleSheetHandler handler = new StyleSheetHandler();
        handler.init
            (resourceManager, baseURL, -1, StyleKeyRegistry.getRegistry(), null);


        setupNamespaces(namespaces, handler);


        final InputSource source = new InputSource();
        source.setCharacterStream(new StringReader(selector));


        handler.initParseContext(source);
        handler.setStyleRule(new CSSStyleRule(null, null));
        parser.setDocumentHandler(handler);


        final SelectorList selectorList = parser.parseSelectors(source);
        CSSParserContext.getContext().destroy();
        return selectorList;
      }
    }
    catch (Exception e)

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      throw new NullPointerException();
    }


    try
    {
      final Parser parser = getParser();
      synchronized(parser)
      {
        final StyleSheetHandler handler = new StyleSheetHandler();
        setupNamespaces(namespaces, handler);


        handler.init
            (resourceManager, baseURL, -1, registry, null);


        final InputSource source = new InputSource();
        source.setCharacterStream(new StringReader(value));


        handler.initParseContext(source);
        handler.setStyleRule(new CSSStyleRule(null, null));
        parser.setDocumentHandler(handler);
        final LexicalUnit lu = parser.parsePropertyValue(source);
        handler.property(key.getName(), lu, false);
        final CSSStyleRule rule = (CSSStyleRule) handler.getStyleRule();


        CSSParserContext.getContext().destroy();

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   */
  public LexicalUnit parseLexicalStyleValue (final String value)
  {
    try
    {
      final Parser parser = getParser();
      synchronized(parser)
      {
        final StyleSheetHandler handler = new StyleSheetHandler();
        handler.init (null, null, -1, registry, null);
        final InputSource source = new InputSource();
        source.setCharacterStream(new StringReader(value));
        handler.initParseContext(source);
        parser.setDocumentHandler(handler);
        return parser.parsePropertyValue(source);
      }
    }
    catch (Exception e)
    {
      e.printStackTrace();

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      throw new NullPointerException("Name is null");
    }


    try
    {
      final Parser parser = getParser();
      synchronized(parser)
      {
        final StyleSheetHandler handler = new StyleSheetHandler();
        setupNamespaces(namespaces, handler);
        handler.init (resourceManager, baseURL, -1, registry, null);


        final InputSource source = new InputSource();
        source.setCharacterStream(new StringReader(styleText));


        handler.initParseContext(source);
        handler.setStyleRule(baseRule);
        parser.setDocumentHandler(handler);
        parser.parseStyleDeclaration(source);
        final CSSDeclarationRule rule = handler.getStyleRule();
        CSSParserContext.getContext().destroy();
        return rule;
      }
    }

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