Java Code Examples for org.w3c.dom.Node#setUserData()

/**
 * This is a CRUDE INEXACT HACK to decorate the DOM with some kind of line number
 * information for elements. It's inexact because by the time we get the DOM we
 * already have lost all the information about whitespace between attributes.
 * <p/>
 * Also we don't even try to deal with \n vs \r vs \r\n insanity. This only counts
 * the \n occurring in text nodes to determine line advances, which is clearly flawed.
 * <p/>
 * However it's good enough for testing, and we'll replace it by a PositionXmlParser
 * once it's moved into com.android.util.
 */
private static int findLineNumbers(Node node, int line) {
    for (; node != null; node = node.getNextSibling()) {
        node.setUserData(DATA_LINE_NUMBER, Integer.valueOf(line), null /*handler*/);

        if (node.getNodeType() == Node.TEXT_NODE) {
            String text = node.getNodeValue();
            if (text.length() > 0) {
                for (int pos = 0; (pos = text.indexOf('\n', pos)) != -1; pos++) {
                    ++line;
                }
            }
        }

        Node child = node.getFirstChild();
        if (child != null) {
            line = findLineNumbers(child, line);
        }
    }
    return line;
}
 

/**
 * This is a CRUDE INEXACT HACK to decorate the DOM with some kind of line number
 * information for elements. It's inexact because by the time we get the DOM we
 * already have lost all the information about whitespace between attributes.
 * <p/>
 * Also we don't even try to deal with \n vs \r vs \r\n insanity. This only counts
 * the \n occurring in text nodes to determine line advances, which is clearly flawed.
 * <p/>
 * However it's good enough for testing, and we'll replace it by a PositionXmlParser
 * once it's moved into com.android.util.
 */
private static int findLineNumbers(Node node, int line) {
    for (; node != null; node = node.getNextSibling()) {
        node.setUserData(DATA_LINE_NUMBER, Integer.valueOf(line), null /*handler*/);

        if (node.getNodeType() == Node.TEXT_NODE) {
            String text = node.getNodeValue();
            if (!text.isEmpty()) {
                for (int pos = 0; (pos = text.indexOf('\n', pos)) != -1; pos++) {
                    ++line;
                }
            }
        }

        Node child = node.getFirstChild();
        if (child != null) {
            line = findLineNumbers(child, line);
        }
    }
    return line;
}
 

@Override
public void handle(short operation, String key, Object data,
        Node src, Node dst) {
   
    if (src != null && dst != null) {
        XmlLocationData locatonData = (XmlLocationData)
                src.getUserData(XmlLocationData.LOCATION_DATA_KEY);
       
        if (locatonData != null) {
            dst.setUserData(XmlLocationData.LOCATION_DATA_KEY,
                    locatonData, dataHandler);
        }
    }
}
 

private static boolean addLocation(Document doc, Node node,
                                   Location loc,
                                   boolean recordLoc) {
    if (recordLoc && loc != null && (loc.getColumnNumber() != 0 || loc.getLineNumber() != 0)) {
        try {
            final int charOffset = loc.getCharacterOffset();
            final int colNum = loc.getColumnNumber();
            final int linNum = loc.getLineNumber();
            final String pubId = loc.getPublicId() == null ? doc.getDocumentURI() : loc.getPublicId();
            final String sysId = loc.getSystemId() == null ? doc.getDocumentURI() : loc.getSystemId();
            Location loc2 = new Location() {
                public int getCharacterOffset() {
                    return charOffset;
                }
                public int getColumnNumber() {
                    return colNum;
                }
                public int getLineNumber() {
                    return linNum;
                }
                public String getPublicId() {
                    return pubId;
                }
                public String getSystemId() {
                    return sysId;
                }
            };
            node.setUserData("location", loc2, LocationUserDataHandler.INSTANCE);
        } catch (Throwable ex) {
            //possibly not DOM level 3, won't be able to record this then
            return false;
        }
    }
    return recordLoc;
}
 

@Override
public void handle(short operation, String key, Object data,
        Node src, Node dst) {
   
    if (src != null && dst != null) {
        XmlLocationData locatonData = (XmlLocationData)
                src.getUserData(XmlLocationData.LOCATION_DATA_KEY);
       
        if (locatonData != null) {
            dst.setUserData(XmlLocationData.LOCATION_DATA_KEY,
                    locatonData, dataHandler);
        }
    }
}
 

public static void setSource(@NonNull Node node, @NonNull File source) {
    //noinspection ConstantConditions
    for (; node != null; node = node.getNextSibling()) {
        short nodeType = node.getNodeType();
        if (nodeType == Node.ELEMENT_NODE
                || nodeType == Node.COMMENT_NODE
                || nodeType == Node.DOCUMENT_NODE
                || nodeType == Node.CDATA_SECTION_NODE) {
            node.setUserData(DATA_ORIGIN_FILE, source, null);
        }
        Node child = node.getFirstChild();
        setSource(child, source);
    }
}
 

private void setRebuild() {
    Node node = getNode();
    if (null != node) {
        node.setUserData(DATA_CATEGORY_OBJECT, new Object(), null);
    }
    _needToRebuild = true;
}
 

@Override
public void handle(final short operation, final String key, final Object data,
        final Node src, final Node dst) {

    if (operation == NODE_IMPORTED || operation == NODE_CLONED) {
        if (dst != null) {
            dst.setUserData(key, data, this);
        }
    }
}
 

@Override
public void handle(short operation, String key, Object data,
        Node src, Node dst) {
   
    if (src != null && dst != null) {
        XmlLocationData locatonData = (XmlLocationData)
                src.getUserData(XmlLocationData.LOCATION_DATA_KEY);
       
        if (locatonData != null) {
            dst.setUserData(XmlLocationData.LOCATION_DATA_KEY,
                    locatonData, dataHandler);
        }
    }
}
 

public void handle(
    short operation, String key, Object data, Node src, Node dest) {
  switch (operation) {
    case UserDataHandler.NODE_CLONED:
    case UserDataHandler.NODE_IMPORTED:
      dest.setUserData(HAS_XMLNS_DECLARATION_KEY, Boolean.TRUE, this);
      break;
  }
}
 

/**
 * Sets the file associated with the given node, if any
 */
public static void setFileFor(Node node, File file) {
    node.setUserData(MergerXmlUtils.DATA_ORIGIN_FILE, file, null);
}
 

private static void setUserData(Node node, XmlNode wrap) {
    if (DOM_LEVEL_3) {
        node.setUserData(USER_DATA_XMLNODE_KEY, wrap, wrap.events);
    }
}
 

private void storeLineInformation(Node e) {
    e.setUserData(LINE_NUMBER_KEY_NAME, this.locator.getLineNumber(), null);
       e.setUserData(COLUMN_NUMBER_KEY_NAME, this.locator.getColumnNumber(), null);
}
 

public void handle(short operation, String key, Object data, Node src, Node dst) {
    if (operation == NODE_CLONED) {
        dst.setUserData(key, data, this);
    }
}
 

protected void setLocationData(Node n) {
    if (locator != null) {
        n.setUserData(KEY_LIN_NO, locator.getLineNumber(), null);
        n.setUserData(KEY_COL_NO, locator.getColumnNumber(), null);
    }
}
 

public Node cloneNode(Document document, Node node, boolean deep) throws DOMException {
    if (document == null || node == null) {
        return null;
    }
    int type = node.getNodeType();

    if (node.getOwnerDocument() == document) {
        return node.cloneNode(deep);
    }
    Node clone;
    switch (type) {
    case Node.CDATA_SECTION_NODE:
        clone = document.createCDATASection(node.getNodeValue());
        break;
    case Node.COMMENT_NODE:
        clone = document.createComment(node.getNodeValue());
        break;
    case Node.ENTITY_REFERENCE_NODE:
        clone = document.createEntityReference(node.getNodeName());
        break;
    case Node.ELEMENT_NODE:
        clone = document.createElement(node.getNodeName());
        NamedNodeMap attributes = node.getAttributes();
        for (int i = 0; i < attributes.getLength(); i++) {
            ((Element)clone).setAttributeNS(attributes.item(i).getNamespaceURI(),
                                            attributes.item(i).getNodeName(),
                                            attributes.item(i).getNodeValue());
        }
        try {
            clone.setUserData("location", node.getUserData("location"), null);
        } catch (Throwable t) {
            //non DOM level 3
        }
        break;

    case Node.TEXT_NODE:
        clone = document.createTextNode(node.getNodeValue());
        break;
    default:
        return null;
    }
    if (deep && type == Node.ELEMENT_NODE) {
        Node child = node.getFirstChild();
        while (child != null) {
            clone.appendChild(cloneNode(document, child, true));
            child = child.getNextSibling();
        }
    }
    return clone;
}
 

public static void attachSourceFile(Node node, SourceFile sourceFile) {
    node.setUserData(SOURCE_FILE_USER_DATA_KEY, sourceFile, null);
}
 

private static void setUserData(Node node, XmlNode wrap) {
    if (DOM_LEVEL_3) {
        node.setUserData(USER_DATA_XMLNODE_KEY, wrap, wrap.events);
    }
}
 

/**
 * Sets the file associated with the given node, if any
 */
public static void setFileFor(Node node, File file) {
    node.setUserData(MergerXmlUtils.DATA_ORIGIN_FILE, file, null);
}
 

@Override
public void endElement(final String uri, final String localName, final String qName)
        throws SAXException {

    super.endElement(uri, localName, qName);

    final Locator elementStartLocator = locatorsAtElementStart.pop();

    final Location location = new Location(elementStartLocator, locator);

    final Node domNode = domNodes.pop();
    domNode.setUserData(Location.USER_DATA_ID, location, Location.USER_DATA_HANDLER);
}