com.gargoylesoftware.css.parser.CSSException Java Examples

/**
 * Returns true if the element would be selected by the specified selector string; otherwise, returns false.
 * @param selectorString the selector to test
 * @return true if the element would be selected by the specified selector string; otherwise, returns false.
 */
public boolean matches(final String selectorString) {
    try {
        final BrowserVersion browserVersion = getPage().getWebClient().getBrowserVersion();
        final SelectorList selectorList = getSelectorList(selectorString, browserVersion);

        if (selectorList != null) {
            for (Selector selector : selectorList) {
                if (CSSStyleSheet.selects(browserVersion, selector, this, null, true)) {
                    return true;
                }
            }
        }
        return false;
    }
    catch (final IOException e) {
        throw new CSSException("Error parsing CSS selectors from '" + selectorString + "': " + e.getMessage());
    }
}
 

/**
 * Returns true if the element would be selected by the specified selector string; otherwise, returns false.
 * @param context the JavaScript context
 * @param thisObj the scriptable
 * @param args the arguments passed into the method
 * @param function the function
 * @return the value
 */
@JsxFunction({CHROME, FF, FF68, FF60})
public static boolean matches(
        final Context context, final Scriptable thisObj, final Object[] args, final Function function) {
    final String selectorString = (String) args[0];
    if (!(thisObj instanceof Element)) {
        throw ScriptRuntime.typeError("Illegal invocation");
    }
    try {
        final DomNode domNode = ((Element) thisObj).getDomNodeOrNull();
        return domNode != null && ((DomElement) domNode).matches(selectorString);
    }
    catch (final CSSException e) {
        throw ScriptRuntime.constructError("SyntaxError",
                "An invalid or illegal selector was specified (selector: '"
                + selectorString + "' error: " + e.getMessage() + ").");
    }
}
 

/**
 * Returns the {@link SelectorList}.
 * @param selectors the selectors
 * @param browserVersion the {@link BrowserVersion}
 * @return the {@link SelectorList}
 * @throws IOException if an error occurs
 */
protected SelectorList getSelectorList(final String selectors, final BrowserVersion browserVersion)
        throws IOException {
    final CSSOMParser parser = new CSSOMParser(new CSS3Parser());
    final CheckErrorHandler errorHandler = new CheckErrorHandler();
    parser.setErrorHandler(errorHandler);

    final SelectorList selectorList = parser.parseSelectors(new InputSource(new StringReader(selectors)));
    // in case of error parseSelectors returns null
    if (errorHandler.errorDetected()) {
        throw new CSSException("Invalid selectors: " + selectors);
    }

    if (selectorList != null) {
        int documentMode = 9;
        if (browserVersion.hasFeature(QUERYSELECTORALL_NOT_IN_QUIRKS)) {
            final Object sobj = getPage().getScriptableObject();
            if (sobj instanceof HTMLDocument) {
                documentMode = ((HTMLDocument) sobj).getDocumentMode();
            }
        }
        CSSStyleSheet.validateSelectors(selectorList, documentMode, this);

    }
    return selectorList;
}
 

/**
 * Retrieves all element nodes from descendants of the starting element node that match any selector
 * within the supplied selector strings.
 * @param selectors one or more CSS selectors separated by commas
 * @return list of all found nodes
 */
public DomNodeList<DomNode> querySelectorAll(final String selectors) {
    try {
        final BrowserVersion browserVersion = getPage().getWebClient().getBrowserVersion();
        final SelectorList selectorList = getSelectorList(selectors, browserVersion);

        final List<DomNode> elements = new ArrayList<>();
        if (selectorList != null) {
            for (final DomElement child : getDomElementDescendants()) {
                for (Selector selector : selectorList) {
                    if (CSSStyleSheet.selects(browserVersion, selector, child, null, true)) {
                        elements.add(child);
                        break;
                    }
                }
            }
        }
        return new StaticDomNodeList(elements);
    }
    catch (final IOException e) {
        throw new CSSException("Error parsing CSS selectors from '" + selectors + "': " + e.getMessage());
    }
}
 

/**
 * Retrieves all element nodes from descendants of the starting element node that match any selector
 * within the supplied selector strings.
 * @param selectors one or more CSS selectors separated by commas
 * @return list of all found nodes
 */
public DomNodeList<DomNode> querySelectorAll(final String selectors) {
    try {
        final BrowserVersion browserVersion = getPage().getWebClient().getBrowserVersion();
        final SelectorList selectorList = getSelectorList(selectors, browserVersion);

        final List<DomNode> elements = new ArrayList<>();
        if (selectorList != null) {
            for (final DomElement child : getDomElementDescendants()) {
                for (Selector selector : selectorList) {
                    if (CSSStyleSheet.selects(browserVersion, selector, child, null, true)) {
                        elements.add(child);
                        break;
                    }
                }
            }
        }
        return new StaticDomNodeList(elements);
    }
    catch (final IOException e) {
        throw new CSSException("Error parsing CSS selectors from '" + selectors + "': " + e.getMessage());
    }
}
 

/**
 * Returns the {@link SelectorList}.
 * @param selectors the selectors
 * @param browserVersion the {@link BrowserVersion}
 * @return the {@link SelectorList}
 * @throws IOException if an error occurs
 */
protected SelectorList getSelectorList(final String selectors, final BrowserVersion browserVersion)
        throws IOException {
    final CSSOMParser parser = new CSSOMParser(new CSS3Parser());
    final CheckErrorHandler errorHandler = new CheckErrorHandler();
    parser.setErrorHandler(errorHandler);

    final SelectorList selectorList = parser.parseSelectors(selectors);
    // in case of error parseSelectors returns null
    if (errorHandler.errorDetected()) {
        throw new CSSException("Invalid selectors: " + selectors);
    }

    if (selectorList != null) {
        int documentMode = 9;
        if (browserVersion.hasFeature(QUERYSELECTORALL_NOT_IN_QUIRKS)) {
            final Object sobj = getPage().getScriptableObject();
            if (sobj instanceof HTMLDocument) {
                documentMode = ((HTMLDocument) sobj).getDocumentMode();
            }
        }
        CSSStyleSheet.validateSelectors(selectorList, documentMode, this);

    }
    return selectorList;
}
 

/**
 * Returns true if the element would be selected by the specified selector string; otherwise, returns false.
 * @param context the JavaScript context
 * @param thisObj the scriptable
 * @param args the arguments passed into the method
 * @param function the function
 * @return the value
 */
@JsxFunction({CHROME, FF, EDGE})
public static boolean matches(
        final Context context, final Scriptable thisObj, final Object[] args, final Function function) {
    final String selectorString = (String) args[0];
    if (!(thisObj instanceof Element)) {
        throw ScriptRuntime.typeError("Illegal invocation");
    }
    try {
        final DomNode domNode = ((Element) thisObj).getDomNodeOrNull();
        return domNode != null && ((DomElement) domNode).matches(selectorString);
    }
    catch (final CSSException e) {
        throw ScriptRuntime.constructError("SyntaxError",
                "An invalid or illegal selector was specified (selector: '"
                + selectorString + "' error: " + e.getMessage() + ").");
    }
}
 

/**
 * Returns true if the element would be selected by the specified selector string; otherwise, returns false.
 * @param selectorString the selector to test
 * @return true if the element would be selected by the specified selector string; otherwise, returns false.
 */
public boolean matches(final String selectorString) {
    try {
        final BrowserVersion browserVersion = getPage().getWebClient().getBrowserVersion();
        final SelectorList selectorList = getSelectorList(selectorString, browserVersion);

        if (selectorList != null) {
            for (Selector selector : selectorList) {
                if (CSSStyleSheet.selects(browserVersion, selector, this, null, true)) {
                    return true;
                }
            }
        }
        return false;
    }
    catch (final IOException e) {
        throw new CSSException("Error parsing CSS selectors from '" + selectorString + "': " + e.getMessage());
    }
}
 

/**
 * Retrieves all element nodes from descendants of the starting element node that match any selector
 * within the supplied selector strings.
 * The NodeList object returned by the querySelectorAll() method must be static, not live.
 * @param selectors the selectors
 * @return the static node list
 */
@JsxFunction
public NodeList querySelectorAll(final String selectors) {
    try {
        return NodeList.staticNodeList(this, getDomNodeOrDie().querySelectorAll(selectors));
    }
    catch (final CSSException e) {
        throw Context.reportRuntimeError("An invalid or illegal selector was specified (selector: '"
                + selectors + "' error: " + e.getMessage() + ").");
    }
}
 

/**
 * Returns the first element within the document that matches the specified group of selectors.
 * @param selectors the selectors
 * @return null if no matches are found; otherwise, it returns the first matching element
 */
@JsxFunction
public Node querySelector(final String selectors) {
    try {
        final DomNode node = getDomNodeOrDie().querySelector(selectors);
        if (node != null) {
            return (Node) node.getScriptableObject();
        }
        return null;
    }
    catch (final CSSException e) {
        throw Context.reportRuntimeError("An invalid or illegal selector was specified (selector: '"
                + selectors + "' error: " + e.getMessage() + ").");
    }
}
 

/**
 * Retrieves all element nodes from descendants of the starting element node that match any selector
 * within the supplied selector strings.
 * The NodeList object returned by the querySelectorAll() method must be static, not live.
 * @param selectors the selectors
 * @return the static node list
 */
@JsxFunction
public NodeList querySelectorAll(final String selectors) {
    try {
        return NodeList.staticNodeList(this, getDomNodeOrDie().querySelectorAll(selectors));
    }
    catch (final CSSException e) {
        throw Context.reportRuntimeError("An invalid or illegal selector was specified (selector: '"
                + selectors + "' error: " + e.getMessage() + ").");
    }
}
 

/**
 * Retrieves all element nodes from descendants of the starting element node that match any selector
 * within the supplied selector strings.
 * The NodeList object returned by the querySelectorAll() method must be static, not live.
 * @param selectors the selectors
 * @return the static node list
 */
@JsxFunction
public NodeList querySelectorAll(final String selectors) {
    try {
        return NodeList.staticNodeList(this, getDomNodeOrDie().querySelectorAll(selectors));
    }
    catch (final CSSException e) {
        throw Context.reportRuntimeError("An invalid or illegal selector was specified (selector: '"
                + selectors + "' error: " + e.getMessage() + ").");
    }
}
 

/**
 * Returns the first element within the document that matches the specified group of selectors.
 * @param selectors the selectors
 * @return null if no matches are found; otherwise, it returns the first matching element
 */
@JsxFunction
public Node querySelector(final String selectors) {
    try {
        final DomNode node = getDomNodeOrDie().querySelector(selectors);
        if (node != null) {
            return (Node) node.getScriptableObject();
        }
        return null;
    }
    catch (final CSSException e) {
        throw Context.reportRuntimeError("An invalid or illegal selector was specified (selector: '"
                + selectors + "' error: " + e.getMessage() + ").");
    }
}
 

/**
 * Validates the list of selectors.
 * @param selectorList the selectors
 * @param documentMode see {@link HTMLDocument#getDocumentMode()}
 * @param domNode the dom node the query should work on
 * @throws CSSException if a selector is invalid
 */
public static void validateSelectors(final SelectorList selectorList, final int documentMode,
            final DomNode domNode) throws CSSException {
    for (Selector selector : selectorList) {
        if (!isValidSelector(selector, documentMode, domNode)) {
            throw new CSSException("Invalid selector: " + selector);
        }
    }
}
 

/**
 * Returns the first element within the document that matches the specified group of selectors.
 * @param selectors the selectors
 * @return null if no matches are found; otherwise, it returns the first matching element
 */
@JsxFunction
public Node querySelector(final String selectors) {
    try {
        final DomNode node = getDomNodeOrDie().querySelector(selectors);
        if (node != null) {
            return (Node) node.getScriptableObject();
        }
        return null;
    }
    catch (final CSSException e) {
        throw Context.reportRuntimeError("An invalid or illegal selector was specified (selector: '"
                + selectors + "' error: " + e.getMessage() + ").");
    }
}
 

/**
 * Retrieves all element nodes from descendants of the starting element node that match any selector
 * within the supplied selector strings.
 * The NodeList object returned by the querySelectorAll() method must be static, not live.
 * @param selectors the selectors
 * @return the static node list
 */
@JsxFunction
public NodeList querySelectorAll(final String selectors) {
    try {
        return NodeList.staticNodeList(this, getDomNodeOrDie().querySelectorAll(selectors));
    }
    catch (final CSSException e) {
        throw Context.reportRuntimeError("An invalid or illegal selector was specified (selector: '"
                + selectors + "' error: " + e.getMessage() + ").");
    }
}
 

/**
 * Returns the first element within the document that matches the specified group of selectors.
 * @param selectors the selectors
 * @return null if no matches are found; otherwise, it returns the first matching element
 */
@JsxFunction
public Node querySelector(final String selectors) {
    try {
        final DomNode node = getDomNodeOrDie().querySelector(selectors);
        if (node != null) {
            return (Node) node.getScriptableObject();
        }
        return null;
    }
    catch (final CSSException e) {
        throw Context.reportRuntimeError("An invalid or illegal selector was specified (selector: '"
                + selectors + "' error: " + e.getMessage() + ").");
    }
}
 

/**
 * Retrieves all element nodes from descendants of the starting element node that match any selector
 * within the supplied selector strings.
 * The NodeList object returned by the querySelectorAll() method must be static, not live.
 * @param selectors the selectors
 * @return the static node list
 */
@JsxFunction
public NodeList querySelectorAll(final String selectors) {
    try {
        return NodeList.staticNodeList(this, getDomNodeOrDie().querySelectorAll(selectors));
    }
    catch (final CSSException e) {
        throw Context.reportRuntimeError("An invalid or illegal selector was specified (selector: '"
                + selectors + "' error: " + e.getMessage() + ").");
    }
}
 

/**
 * Retrieves all element nodes from descendants of the starting element node that match any selector
 * within the supplied selector strings.
 * The NodeList object returned by the querySelectorAll() method must be static, not live.
 * @param selectors the selectors
 * @return the static node list
 */
@JsxFunction
public NodeList querySelectorAll(final String selectors) {
    try {
        return NodeList.staticNodeList(this, getDomNodeOrDie().querySelectorAll(selectors));
    }
    catch (final CSSException e) {
        throw Context.reportRuntimeError("An invalid or illegal selector was specified (selector: '"
                + selectors + "' error: " + e.getMessage() + ").");
    }
}
 

/**
 * Returns the first element within the document that matches the specified group of selectors.
 * @param selectors the selectors
 * @return null if no matches are found; otherwise, it returns the first matching element
 */
@JsxFunction
public Node querySelector(final String selectors) {
    try {
        final DomNode node = getDomNodeOrDie().querySelector(selectors);
        if (node != null) {
            return node.getScriptableObject();
        }
        return null;
    }
    catch (final CSSException e) {
        throw Context.reportRuntimeError("An invalid or illegal selector was specified (selector: '"
                + selectors + "' error: " + e.getMessage() + ").");
    }
}
 

/**
 * Validates the list of selectors.
 * @param selectorList the selectors
 * @param documentMode see {@link HTMLDocument#getDocumentMode()}
 * @param domNode the dom node the query should work on
 * @throws CSSException if a selector is invalid
 */
public static void validateSelectors(final SelectorList selectorList, final int documentMode,
            final DomNode domNode) throws CSSException {
    for (Selector selector : selectorList) {
        if (!isValidSelector(selector, documentMode, domNode)) {
            throw new CSSException("Invalid selector: " + selector);
        }
    }
}
 

/**
 * Returns the first element within the document that matches the specified group of selectors.
 * @param selectors the selectors
 * @return null if no matches are found; otherwise, it returns the first matching element
 */
@JsxFunction
public Node querySelector(final String selectors) {
    try {
        final DomNode node = getDomNodeOrDie().querySelector(selectors);
        if (node != null) {
            return node.getScriptableObject();
        }
        return null;
    }
    catch (final CSSException e) {
        throw Context.reportRuntimeError("An invalid or illegal selector was specified (selector: '"
                + selectors + "' error: " + e.getMessage() + ").");
    }
}
 

@Override
public void error(final CSSParseException exception) throws CSSException {
    errorDetected_ = true;
}
 

@Override
public void fatalError(final CSSParseException exception) throws CSSException {
    errorDetected_ = true;
}
 

@Override
public void warning(final CSSParseException exception) throws CSSException {
    // ignore
}
 

/**
 * @param documentMode see {@link HTMLDocument#getDocumentMode()}
 */
private static boolean isValidCondition(final Condition condition, final int documentMode, final DomNode domNode) {
    switch (condition.getConditionType()) {
        case ATTRIBUTE_CONDITION:
        case ID_CONDITION:
        case LANG_CONDITION:
        case ONE_OF_ATTRIBUTE_CONDITION:
        case BEGIN_HYPHEN_ATTRIBUTE_CONDITION:
        case CLASS_CONDITION:
            return true;
        case PSEUDO_CLASS_CONDITION:
            final PseudoClassCondition pcc = (PseudoClassCondition) condition;
            String value = pcc.getValue();
            if (value.endsWith(")")) {
                if (value.endsWith("()")) {
                    return false;
                }
                value = value.substring(0, value.indexOf('(') + 1) + ')';
            }
            if (documentMode < 9) {
                return CSS2_PSEUDO_CLASSES.contains(value);
            }

            if (!CSS2_PSEUDO_CLASSES.contains(value)
                    && domNode.hasFeature(QUERYSELECTOR_CSS3_PSEUDO_REQUIRE_ATTACHED_NODE)
                    && !domNode.isAttachedToPage()
                    && !domNode.hasChildNodes()) {
                throw new CSSException("Syntax Error");
            }

            if ("nth-child()".equals(value)) {
                final String arg = StringUtils.substringBetween(pcc.getValue(), "(", ")").trim();
                return "even".equalsIgnoreCase(arg) || "odd".equalsIgnoreCase(arg)
                        || NTH_NUMERIC.matcher(arg).matches()
                        || NTH_COMPLEX.matcher(arg).matches();
            }
            return CSS3_PSEUDO_CLASSES.contains(value);
        default:
            LOG.warn("Unhandled CSS condition type '" + condition.getConditionType() + "'. Accepting it silently.");
            return true;
    }
}
 

/**
 * @param documentMode see {@link HTMLDocument#getDocumentMode()}
 */
private static boolean isValidCondition(final Condition condition, final int documentMode, final DomNode domNode) {
    switch (condition.getConditionType()) {
        case ATTRIBUTE_CONDITION:
        case ID_CONDITION:
        case LANG_CONDITION:
        case ONE_OF_ATTRIBUTE_CONDITION:
        case BEGIN_HYPHEN_ATTRIBUTE_CONDITION:
        case CLASS_CONDITION:
        case PREFIX_ATTRIBUTE_CONDITION:
        case SUBSTRING_ATTRIBUTE_CONDITION:
        case SUFFIX_ATTRIBUTE_CONDITION:
            return true;
        case PSEUDO_CLASS_CONDITION:
            String value = condition.getValue();
            if (value.endsWith(")")) {
                if (value.endsWith("()")) {
                    return false;
                }
                value = value.substring(0, value.indexOf('(') + 1) + ')';
            }
            if (documentMode < 9) {
                return CSS2_PSEUDO_CLASSES.contains(value);
            }

            if (!CSS2_PSEUDO_CLASSES.contains(value)
                    && domNode.hasFeature(QUERYSELECTOR_CSS3_PSEUDO_REQUIRE_ATTACHED_NODE)
                    && !domNode.isAttachedToPage()
                    && !domNode.hasChildNodes()) {
                throw new CSSException("Syntax Error");
            }

            if ("nth-child()".equals(value)) {
                final String arg = StringUtils.substringBetween(condition.getValue(), "(", ")").trim();
                return "even".equalsIgnoreCase(arg) || "odd".equalsIgnoreCase(arg)
                        || NTH_NUMERIC.matcher(arg).matches()
                        || NTH_COMPLEX.matcher(arg).matches();
            }
            return CSS3_PSEUDO_CLASSES.contains(value);
        default:
            if (LOG.isWarnEnabled()) {
                LOG.warn("Unhandled CSS condition type '"
                            + condition.getConditionType() + "'. Accepting it silently.");
            }
            return true;
    }
}
 

@Override
public void warning(final CSSParseException exception) throws CSSException {
    // ignore
}
 

@Override
public void fatalError(final CSSParseException exception) throws CSSException {
    errorDetected_ = true;
}
 

@Override
public void error(final CSSParseException exception) throws CSSException {
    errorDetected_ = true;
}