package client.net.sf.saxon.ce.dom;
import java.util.ArrayList;
import client.net.sf.saxon.ce.Configuration;
import client.net.sf.saxon.ce.dom.HTMLDocumentWrapper.DocType;
import client.net.sf.saxon.ce.event.Receiver;
import client.net.sf.saxon.ce.expr.Container;
import client.net.sf.saxon.ce.expr.Expression;
import client.net.sf.saxon.ce.expr.StaticContext;
import client.net.sf.saxon.ce.expr.StringLiteral;
import client.net.sf.saxon.ce.lib.NamespaceConstant;
import client.net.sf.saxon.ce.om.*;
import client.net.sf.saxon.ce.pattern.AnyNodeTest;
import client.net.sf.saxon.ce.pattern.NameTest;
import client.net.sf.saxon.ce.pattern.NodeTest;
import client.net.sf.saxon.ce.trans.XPathException;
import client.net.sf.saxon.ce.tree.NamespaceNode;
import client.net.sf.saxon.ce.tree.iter.*;
import client.net.sf.saxon.ce.tree.util.FastStringBuffer;
import client.net.sf.saxon.ce.tree.util.Navigator;
import client.net.sf.saxon.ce.tree.wrapper.SiblingCountingNode;
import client.net.sf.saxon.ce.tree.wrapper.VirtualNode;
import client.net.sf.saxon.ce.type.Type;
import client.net.sf.saxon.ce.value.AtomicValue;
import client.net.sf.saxon.ce.value.StringValue;
import client.net.sf.saxon.ce.value.UntypedAtomicValue;
import com.google.gwt.core.client.JavaScriptObject;
import com.google.gwt.core.client.JsArray;
import com.google.gwt.dom.client.Element;
import com.google.gwt.dom.client.Node;
import com.google.gwt.dom.client.NodeList;
import com.google.gwt.regexp.shared.MatchResult;
import com.google.gwt.regexp.shared.RegExp;
//import com.google.gwt.xml.client.Attr;
/**
* A node in the XML parse tree representing an HTML element, character content, or attribute.<P>
* This is the implementation of the NodeInfo interface used as a wrapper for nodes in the DOM.
* The DOM itself makes little distinction between XML and HTML, so the parent DocumentNodeWrapper
* it used to identify the document type for cases where there's a difference - such as namespaces
* and the capitalisation of element names
*/
public class HTMLNodeWrapper implements NodeInfo, VirtualNode, SiblingCountingNode {
protected Node node;
private int namecode = -1;
protected short nodeKind;
private HTMLNodeWrapper parent; // null means unknown
protected HTMLDocumentWrapper docWrapper;
protected int index; // -1 means unknown
protected int span = 1; // the number of adjacent text nodes wrapped by this XMLNodeWrapper.
// If span>1, node will always be the first of a sequence of adjacent text nodes
/**
* This constructor is protected: nodes should be created using the makeWrapper
* factory method
* @param node The DOM node to be wrapped
* @param parent The XMLNodeWrapper that wraps the parent of this node
* @param index Position of this node among its siblings
*/
protected HTMLNodeWrapper(Node node, HTMLNodeWrapper parent, int index) {
this.node = node;
this.parent = parent;
this.index = index;
}
/**
* Factory method to wrap a DOM node with a wrapper that implements the Saxon
* NodeInfo interface.
* @param node The DOM node
* @param docWrapper The wrapper for the containing Document node
* @return The new wrapper for the supplied node
* @throws NullPointerException if the node or the document wrapper are null
*/
protected HTMLNodeWrapper makeWrapper(Node node, HTMLDocumentWrapper docWrapper) {
if (node == null) {
throw new NullPointerException("HTMLNodeWrapper#makeWrapper: Node must not be null");
}
if (docWrapper == null) {
throw new NullPointerException("HTMLNodeWrapper#makeWrapper: XMLDocumentWrapper must not be null");
}
return makeWrapper(node, docWrapper, null, -1);
}
/**
* Factory method to wrap a DOM node with a wrapper that implements the Saxon
* NodeInfo interface.
* @param node The DOM node
* @param docWrapper The wrapper for the containing Document node *
* @param parent The wrapper for the parent of the JDOM node
* @param index The position of this node relative to its siblings
* @return The new wrapper for the supplied node
*/
protected HTMLNodeWrapper makeWrapper(Node node, HTMLDocumentWrapper docWrapper,
HTMLNodeWrapper parent, int index) {
HTMLNodeWrapper wrapper;
switch (node.getNodeType()) {
case Node.DOCUMENT_NODE:
case DOCUMENT_FRAGMENT_NODE:
return docWrapper;
case Node.ELEMENT_NODE:
wrapper = new HTMLNodeWrapper(node, parent, index);
wrapper.nodeKind = Type.ELEMENT;
break;
case Type.ATTRIBUTE:
wrapper = new HTMLNodeWrapper(node, parent, index);
wrapper.nodeKind = Type.ATTRIBUTE;
break;
case Node.TEXT_NODE:
wrapper = new HTMLNodeWrapper(node, parent, index);
wrapper.nodeKind = Type.TEXT;
break;
case CDATA_SECTION_NODE:
wrapper = new HTMLNodeWrapper(node, parent, index);
wrapper.nodeKind = Type.TEXT;
break;
case Type.COMMENT:
wrapper = new HTMLNodeWrapper(node, parent, index);
wrapper.nodeKind = Type.COMMENT;
break;
case Type.PROCESSING_INSTRUCTION:
wrapper = new HTMLNodeWrapper(node, parent, index);
wrapper.nodeKind = Type.PROCESSING_INSTRUCTION;
break;
default:
short nodeType = node.getNodeType();
throw new IllegalArgumentException("Unsupported node type in DOM! " + node.getNodeType() + " instance " + node.toString());
}
wrapper.docWrapper = docWrapper;
return wrapper;
}
private final static short DOCUMENT_FRAGMENT_NODE = 11;
private final static short CDATA_SECTION_NODE = 4;
/**
* Get the underlying DOM node, to implement the VirtualNode interface
*/
public Object getUnderlyingNode() {
return node;
}
/**
* Get the node underlying this virtual node. If this is a VirtualNode the method
* will automatically drill down through several layers of wrapping.
* @return The underlying node.
*/
public Object getRealNode() {
return getUnderlyingNode();
}
/**
* Get the configuration
*/
public Configuration getConfiguration() {
return docWrapper.getConfiguration();
}
/**
* Get the name pool for this node
* @return the NamePool
*/
public NamePool getNamePool() {
return docWrapper.getNamePool();
}
/**
* Return the type of node.
* @return one of the values Node.ELEMENT, Node.TEXT, Node.ATTRIBUTE, etc.
*/
public int getNodeKind() {
return nodeKind;
}
/**
* Get the typed value of the item
*/
public AtomicValue getTypedValue() {
switch (getNodeKind()) {
case Type.COMMENT:
case Type.PROCESSING_INSTRUCTION:
return new StringValue(getStringValueCS());
default:
return new UntypedAtomicValue(getStringValueCS());
}
}
/**
* Get the type annotation
*/
public int getTypeAnnotation() {
if (getNodeKind() == Type.ATTRIBUTE) {
return StandardNames.XS_UNTYPED_ATOMIC;
}
return StandardNames.XS_UNTYPED;
}
/**
* Determine whether this is the same node as another node. <br />
* Note: a.isSameNodeInfo(b) if and only if generateId(a)==generateId(b)
* @return true if this Node object and the supplied Node object represent the
* same node in the tree.
*/
public boolean isSameNodeInfo(NodeInfo other) {
if (!(other instanceof HTMLNodeWrapper)) {
return false;
}
HTMLNodeWrapper ow = (HTMLNodeWrapper)other;
return getNodeKind()==ow.getNodeKind() &&
getNameCode()==ow.getNameCode() && // redundant, but gives a quick exit
getSiblingPosition()==ow.getSiblingPosition() &&
getParent().isSameNodeInfo(ow.getParent());
}
/**
* The equals() method compares nodes for identity. It is defined to give the same result
* as isSameNodeInfo().
* @param other the node to be compared with this node
* @return true if this NodeInfo object and the supplied NodeInfo object represent
* the same node in the tree.
* @since 8.7 Previously, the effect of the equals() method was not defined. Callers
* should therefore be aware that third party implementations of the NodeInfo interface may
* not implement the correct semantics. It is safer to use isSameNodeInfo() for this reason.
* The equals() method has been defined because it is useful in contexts such as a Java Set or HashMap.
*/
public boolean equals(Object other) {
return other instanceof NodeInfo && isSameNodeInfo((NodeInfo)other);
}
/**
* The hashCode() method obeys the contract for hashCode(): that is, if two objects are equal
* (represent the same node) then they must have the same hashCode()
* @since 8.7 Previously, the effect of the equals() and hashCode() methods was not defined. Callers
* should therefore be aware that third party implementations of the NodeInfo interface may
* not implement the correct semantics.
*/
public int hashCode() {
FastStringBuffer buffer = new FastStringBuffer(FastStringBuffer.SMALL);
generateId(buffer);
return buffer.toString().hashCode();
}
/**
* Get the System ID for the node.
* @return the System Identifier of the entity in the source document containing the node,
* or null if not known. Note this is not the same as the base URI: the base URI can be
* modified by xml:base, but the system ID cannot.
*/
public String getSystemId() {
return docWrapper.baseURI;
}
public void setSystemId(String uri) {
docWrapper.baseURI = uri;
}
/**
* Get the Base URI for the node, that is, the URI used for resolving a relative URI contained
* in the node. In the DOM model, base URIs are held only an the document level.
*/
public String getBaseURI() {
NodeInfo n = this;
if (getNodeKind() != Type.ELEMENT) {
n = getParent();
}
// Look for an xml:base attribute
while (n != null) {
String xmlbase = Navigator.getAttributeValue(n, NamespaceConstant.XML, "base");
if (xmlbase != null) {
return xmlbase;
}
n = n.getParent();
}
// if not found, return the base URI of the document node
return docWrapper.baseURI;
}
/**
* Get line number
* @return the line number of the node in its original source document; or -1 if not available
*/
public int getLineNumber() {
return -1;
}
/**
* Determine the relative position of this node and another node, in document order.
* The other node will always be in the same document.
* @param other The other node, whose position is to be compared with this node
* @return -1 if this node precedes the other node, +1 if it follows the other
* node, or 0 if they are the same node. (In this case, isSameNode() will always
* return true, and the two nodes will produce the same result for generateId())
*/
public int compareOrder(NodeInfo other) {
if (other instanceof SiblingCountingNode) {
return Navigator.compareOrder(this, (SiblingCountingNode)other);
} else {
// it's presumably a Namespace Node
return -other.compareOrder(this);
}
}
/**
* Return the string value of the node. The interpretation of this depends on the type
* of node. For an element it is the accumulated character content of the element,
* including descendant elements.
* @return the string value of the node
*/
public String getStringValue() {
return getStringValueCS().toString();
}
/**
* Get the value of the item as a CharSequence. This is in some cases more efficient than
* the version of the method that returns a String.
*/
public CharSequence getStringValueCS() {
switch (nodeKind) {
case Type.DOCUMENT:
case Type.ELEMENT:
NodeList children1 = node.getChildNodes();
StringBuffer sb1 = new StringBuffer(16);
expandStringValue(children1, sb1);
return sb1;
case Type.ATTRIBUTE:
return emptyIfNull(getValue(node)); // previously used xml.client attr cast
case Type.TEXT:
if (span == 1) {
return emptyIfNull(getValue(node));
} else {
FastStringBuffer fsb = new FastStringBuffer(FastStringBuffer.SMALL);
Node textNode = node;
for (int i=0; i<span; i++) {
fsb.append(emptyIfNull(getValue(textNode)));
textNode = textNode.getNextSibling();
}
return fsb.condense();
}
case Type.COMMENT:
case Type.PROCESSING_INSTRUCTION:
return emptyIfNull(getValue(node));
default:
return "";
}
}
/**
* Use this alternative as Node class uses nodeValue always -
* this is now deprecated - there was an attempt to fix pre IE9 problem with
* reporting values of head child elements - such as title - but
* this failed with innerHTML property
* - Issue with IE8 when value is boolean - need to convert to string
*/
private static final native String getValue(Node n) /*-{
var v;
if (n.nodeValue) {
v = n.nodeValue;
} else {
v = n.value;
}
if(v == undefined){
return v;
}
return String(v);
}-*/;
private static final native String getTypeOfNodeValue(Node n) /*-{
if (n.nodeValue) {
return n.nodeValue + " nv";
} else {
return n.value + " v";
}
}-*/;
/**
* Treat a node value of null as an empty string.
* @param s the node value
* @return a zero-length string if s is null, otherwise s
*/
private static String emptyIfNull(String s) {
return (s==null ? "" : s);
}
private static void expandStringValue(NodeList list, StringBuffer sb) {
final int len = list.getLength();
for (int i = 0; i < len; i++) {
Node child = list.getItem(i);
switch (child.getNodeType()) {
case Node.ELEMENT_NODE:
expandStringValue(child.getChildNodes(), sb);
break;
case Type.COMMENT:
case Type.PROCESSING_INSTRUCTION:
break;
default:
sb.append(getValue(child));
}
}
}
/**
* Get name code. The name code is a coded form of the node name: two nodes
* with the same name code have the same namespace URI, the same local name,
* and the same prefix. By masking the name code with &0xfffff, you get a
* fingerprint: two nodes with the same fingerprint have the same local name
* and namespace URI.
* @see client.net.sf.saxon.ce.om.NamePool#allocate allocate
*/
public int getNameCode() {
if (namecode != -1) {
// this is a memo function
return namecode;
}
int nodeKind = getNodeKind();
if (nodeKind == Type.ELEMENT || nodeKind == Type.ATTRIBUTE) {
String prefix = getPrefix();
if (prefix==null) {
prefix = "";
}
namecode = docWrapper.getNamePool().allocate(prefix, getURI(), getLocalPart());
return namecode;
} else if (nodeKind == Type.PROCESSING_INSTRUCTION ) {
namecode = docWrapper.getNamePool().allocate("", "", getLocalPart());
return namecode;
} else {
return -1;
}
}
/**
* Get fingerprint. The fingerprint is a coded form of the expanded name
* of the node: two nodes
* with the same name code have the same namespace URI and the same local name.
* A fingerprint of -1 should be returned for a node with no name.
*/
public int getFingerprint() {
int nc = getNameCode();
if (nc == -1) {
return -1;
}
return nc&0xfffff;
}
/**
* Get the local part of the name of this node. This is the name after the ":" if any.
* @return the local part of the name. For an unnamed node, returns null, except for
* un unnamed namespace node, which returns "".
*/
public String getRawLocalName() {
return getLocalName(node);
}
public String getLocalPart() {
switch (getNodeKind()) {
case Type.ELEMENT:
case Type.ATTRIBUTE:
// was node.getNodeName().toLower();
return getDomCorrectedName(getLocalName(node));
case Type.PROCESSING_INSTRUCTION:
return node.getNodeName();
default:
return null;
}
}
// assume this is xml if there is a namespaceURI property
private native String getLocalName(Node node) /*-{
if (node.localName) {
return node.localName;
} else {
var fullname = node.nodeName;
var name;
var pos = fullname.indexOf(':');
if (pos > -1) {
return fullname.substring(pos + 1);
} else { return fullname; }
}
}-*/;
/**
* Get the URI part of the name of this node. This is the URI corresponding to the
* prefix, or the URI of the default namespace if appropriate.
* @return The URI of the namespace of this node. For an unnamed node,
* or for a node with an empty prefix, return an empty
* string.
*/
public String getURI() {
return getNodeURI(node, false);
}
private String getNodeURI(Node lNode, boolean isLocalAttribute) {
NodeInfo element;
// isLocalAttribute is true when method called internally to get uri of
// an attribute belonging to this element
if (isLocalAttribute || nodeKind == Type.ELEMENT) {
element = this;
} else if (nodeKind == Type.ATTRIBUTE) {
element = this.getParent();
} else {
return "";
}
String uri = getNodeNamespace(lNode);
boolean isHTML = (docWrapper.getDocType() == DocType.HTML);
// don't return XHTML namespace for HTML docs that have no XHTML namespace declaration
if (uri == null) {
if (isHTML) return "";
// some browsers add XHTML namespace to all HTML elements - whether namespace declared or not:
} else if (isHTML && uri.equals(NamespaceConstant.XHTML)) {
return "";
} else {
return uri;
}
// Otherwise we have to work it out the hard way...
if (lNode.getNodeName().startsWith("xml:")) {
return NamespaceConstant.XML;
}
String[] parts;
try {
parts = NameChecker.getQNameParts(lNode.getNodeName());
} catch (QNameException e) {
throw new IllegalStateException("Invalid QName in DOM node. " + e);
}
if ((isLocalAttribute || nodeKind == Type.ATTRIBUTE) && parts[0].length() == 0) {
// for an attribute, no prefix means no namespace
uri = "";
} else {
AxisIterator nsiter = element.iterateAxis(Axis.NAMESPACE);
while (true) {
NodeInfo ns = (NodeInfo)nsiter.next();
if (ns == null) {
break;
}
if (ns.getLocalPart().equals(parts[0])) {
uri = ns.getStringValue();
break;
}
}
if (uri == null) {
if (parts[0].length() == 0) {
uri = "";
} else {
throw new IllegalStateException("Undeclared namespace prefix in DOM input: " + parts[0]);
}
}
}
return uri;
}
public final native String getNodeNamespace(Node node) /*-{
if (node.namespaceURI) {
return node.namespaceURI;
} else {
return null;
}
}-*/;
/**
* Get the prefix of the name of the node. This is defined only for elements and attributes.
* If the node has no prefix, or for other kinds of node, return a zero-length string.
* @return The prefix of the name of the node.
*/
public String getPrefix() {
int kind = getNodeKind();
if (kind == Type.ELEMENT || kind == Type.ATTRIBUTE) {
return getNodePrefix(node);
}
return "";
}
private native String getNodePrefix(Node node) /*-{
if (node.prefix) {
return node.prefix;
} else {
return "";
}
}-*/;
/**
* Get the display name of this node. For elements and attributes this is [prefix:]localname.
* For unnamed nodes, it is an empty string.
* @return The display name of this node.
* For a node with no name, return an empty string.
*/
public String getDisplayName() {
switch (nodeKind) {
case Type.ELEMENT:
case Type.ATTRIBUTE:
return getDomCorrectedName(node.getNodeName());
case Type.PROCESSING_INSTRUCTION:
return node.getNodeName();
default:
return "";
}
}
/**
* Set the name to lower-case if the node is an HTML
* or XHTML node type - but preserve case for other XML.
*/
private String getDomCorrectedName(String name) {
if (name == null) {
return null;
}
switch (docWrapper.getDocType()) {
case NONHTML:
return name;
case HTML:
return name.toLowerCase();
case XHTML:
String ns = getURI();
if (ns != null && ns.equals(NamespaceConstant.XHTML)) {
return name.toLowerCase();
} else {
return name;
}
default:
// if unknown - assume HEAD etc. is from HTML document
if (name.matches("[A-Z]+")) {
return name.toLowerCase();
} else {
return name;
}
}
}
/**
* Get the NodeInfo object representing the parent of this node
*/
public NodeInfo getParent() {
if (parent==null) {
switch (getNodeKind()) {
case Type.ATTRIBUTE:
throw new IllegalStateException("parent of attribute node is unknown");
default:
Node p = node.getParentNode();
if (p==null) {
return null;
} else {
parent = makeWrapper(p, docWrapper);
}
}
}
return parent;
}
/**
* Get the index position of this node among its siblings (starting from 0).
* In the case of a text node that maps to several adjacent siblings in the DOM,
* the numbering actually refers to the position of the underlying DOM nodes;
* thus the sibling position for the text node is that of the first DOM node
* to which it relates, and the numbering of subsequent XPath nodes is not necessarily
* consecutive.
*/
public int getSiblingPosition() {
if (index == -1) {
switch (nodeKind) {
case Type.ELEMENT:
case Type.TEXT:
case Type.COMMENT:
case Type.PROCESSING_INSTRUCTION:
int ix = 0;
Node start = node;
while (true) {
start = start.getPreviousSibling();
if (start == null) {
index = ix;
return ix;
}
ix++;
}
case Type.ATTRIBUTE:
ix = 0;
int fp = getFingerprint();
AxisIterator iter = parent.iterateAxis(Axis.ATTRIBUTE);
while (true) {
NodeInfo n = (NodeInfo)iter.next();
if (n==null || n.getFingerprint()==fp) {
index = ix;
return ix;
}
ix++;
}
case Type.NAMESPACE:
ix = 0;
fp = getFingerprint();
iter = parent.iterateAxis(Axis.NAMESPACE);
while (true) {
NodeInfo n = (NodeInfo)iter.next();
if (n==null || n.getFingerprint()==fp) {
index = ix;
return ix;
}
ix++;
}
default:
index = 0;
return index;
}
}
return index;
}
/**
* Return an iteration over the nodes reached by the given axis from this node
* @param axisNumber the axis to be used
* @return a SequenceIterator that scans the nodes reached by the axis in turn.
*/
public AxisIterator iterateAxis(byte axisNumber) {
switch (axisNumber) {
case Axis.ANCESTOR:
if (nodeKind==Type.DOCUMENT) {
return EmptyIterator.getInstance();
}
return new Navigator.AncestorEnumeration(this, false);
case Axis.ANCESTOR_OR_SELF:
if (nodeKind==Type.DOCUMENT) {
return SingleNodeIterator.makeIterator(this);
}
return new Navigator.AncestorEnumeration(this, true);
case Axis.ATTRIBUTE:
if (nodeKind!=Type.ELEMENT) {
return EmptyIterator.getInstance();
}
HTMLAttributeNode[] nodes = getAltAttributes();
return new NodeArrayIterator(nodes);
case Axis.CHILD:
if (hasChildNodes()) {
return new Navigator.EmptyTextFilter(new ChildEnumeration(this, true, true, false));
} else {
return EmptyIterator.getInstance();
}
case Axis.DESCENDANT:
if (hasChildNodes()) {
return new Navigator.DescendantEnumeration(this, false, true);
} else {
return EmptyIterator.getInstance();
}
case Axis.DESCENDANT_OR_SELF:
return new Navigator.DescendantEnumeration(this, true, true);
case Axis.FOLLOWING:
return new Navigator.FollowingEnumeration(this);
case Axis.FOLLOWING_SIBLING:
switch (nodeKind) {
case Type.DOCUMENT:
case Type.ATTRIBUTE:
case Type.NAMESPACE:
return EmptyIterator.getInstance();
default:
return new Navigator.EmptyTextFilter(
new ChildEnumeration(this, false, true, false));
}
case Axis.NAMESPACE:
if (nodeKind!=Type.ELEMENT) {
return EmptyIterator.getInstance();
}
return NamespaceNode.makeIterator(this, AnyNodeTest.getInstance());
case Axis.PARENT:
getParent();
return SingleNodeIterator.makeIterator(parent);
case Axis.PRECEDING:
return new Navigator.PrecedingEnumeration(this, false);
case Axis.PRECEDING_SIBLING:
switch (nodeKind) {
case Type.DOCUMENT:
case Type.ATTRIBUTE:
case Type.NAMESPACE:
return EmptyIterator.getInstance();
default:
return new Navigator.EmptyTextFilter(
new ChildEnumeration(this, false, false, false));
}
case Axis.SELF:
return SingleNodeIterator.makeIterator(this);
case Axis.PRECEDING_OR_ANCESTOR:
return new Navigator.PrecedingEnumeration(this, true);
default:
throw new IllegalArgumentException("Unknown axis number " + axisNumber);
}
}
/**
* Return an iteration over the nodes reached by the given axis from this node
* @param axisNumber the axis to be used
* @param nodeTest A pattern to be matched by the returned nodes
* @return a SequenceIterator that scans the nodes reached by the axis in turn.
*/
public AxisIterator iterateAxis(byte axisNumber, NodeTest nodeTest) {
if (axisNumber == Axis.CHILD && nodeTest.getPrimitiveType() == Type.ELEMENT) {
// common case: avoid creating wrappers for the text nodes
if (hasChildNodes()) {
return new Navigator.AxisFilter(
new ChildEnumeration(this, true, true, true), nodeTest);
} else {
return EmptyIterator.getInstance();
}
}
if (docWrapper.getDocType() != DocType.NONHTML && axisNumber == Axis.ATTRIBUTE && nodeTest instanceof NameTest) {
if (nodeKind == Type.ELEMENT) {
int fp = nodeTest.getFingerprint();
String uri = getNamePool().getURI(fp);
String name = getNamePool().getLocalName(fp);
String prefix = getNamePool().getPrefix(fp);
String value;
boolean keepUri = false;
if (NamespaceConstant.HTML_PROP.equals(uri)) {
value = ((Element)node).getPropertyString(name);
} else if (NamespaceConstant.HTML_STYLE_PROP.equals(uri)) {
// unescape if style name starts with a '-'like -webkit-transition
if(name.length() > 1 && name.charAt(0) == '_' && name.charAt(1) == '-') {
name = name.substring(1);
}
name = HTMLWriter.getCamelCaseName(name);
value = ((Element)node).getStyle().getProperty(name);
} else {
value = getAltAttribute(name);
if (docWrapper.getDocType() == DocType.XHTML) {
return new Navigator.AxisFilter(iterateAxis(axisNumber), nodeTest);
}
}
//HTML only (not XHTML) - so don't use prefix / namespace
if (value == null || value.length()==0) {
if (getAttributeNames().contains(name)) {
return SingleNodeIterator.makeIterator(new HTMLAttributeNode(this, name, "", "", ""));
} else {
return EmptyIterator.getInstance();
}
} else {
return SingleNodeIterator.makeIterator(new HTMLAttributeNode(this, name, "", "", value));
}
} else {
return EmptyIterator.getInstance();
}
}
return new Navigator.AxisFilter(iterateAxis(axisNumber), nodeTest);
}
/**
* Workaround for IE issue when getAttribute won't return
* a value for the style attribute - IE supports non-standard outerHTML
*/
String getAltAttribute(String name) {
String value = ((Element)node).getAttribute(name);
// test for IE issue with style attribute:
if(value.equals("[object]") && name.equals("style")) { // solves IE issue!
value = getStyleAttribute((Element)node);
} else if (name.equals("class") && value.equals("")) {
value = ((Element)node).getAttribute("className"); //solves < IE8 issue!
} else if (name.equals("for") && value.equals("")) {
value = ((Element)node).getAttribute("htmlFor");
}
return value;
}
private String getStyleAttribute(Element elem) {
// style attribute must exist and must be quoted properly
// IE9 does not include style attributes text if their value is not valid
// we therefore don't expect non-quoted styles like <h1 style=color id="abc"...
String value = getOuterHTML(elem);
RegExp quotesPattern = RegExp.compile("(?:\".*?\"|\'.*?\'|[^\'\"]+|['\"])", "g"); // g=global: = all-matches
RegExp stylePattern = RegExp.compile("[\\s]style\\s*="); // e.g. match: <h1 style=
MatchResult m = quotesPattern.exec(value);
int i = 0;
boolean styleFound = false;
String styleContent = "";
String nonQ = "";
while (quotesPattern.getLastIndex() > 0) {
if (i % 2 == 0) {
nonQ = m.getGroup(0); // not in quotes - so check
MatchResult ms = stylePattern.exec(nonQ);
styleFound = ms.getGroupCount() > 0;
if (!styleFound && nonQ.indexOf('>') > -1) {
break; // no more attributes
}
} else if (styleFound) {
styleContent = m.getGroup(0);
// remove enclosing quotes
styleContent = styleContent.substring(1, styleContent.length() - 1);
break;
}
i++;
m = quotesPattern.exec(value);
}
return styleContent;
}
// Non IE browsers should return null - IE browsers > 7 should return null
private static native String getOuterHTML(Element elem) /*-{
return elem.outerHTML;
}-*/;
/**
* Native method to get all attributes for an element as an array of nodes
* @param elem the element whose attributes are required
* @return
*/
private static native JsArray<Node> getAttributes(Element elem) /*-{
return elem.attributes;
}-*/;
private int[] skipWhitespace(int pos, String value, boolean invert) {
// return next char that isn't whitespace along with
// the position offset. The invert argument lets you
// skip non whitespace instead
int offset = 0;
char ch = '\0';
while (true) {
ch = value.charAt(pos + offset);
// DOM whitespace may be normalized
boolean isWhitespace = (ch == ' ' || ch == '\r' || ch == '\n' || ch == '\t');
if (invert) {
isWhitespace = !isWhitespace;
}
if (!(isWhitespace)) {
break;
}
offset++;
if(!(pos + offset < value.length())) {
ch = '\0'; // we're at end of string
break;
}
}
return new int[] {offset, ch};
}
/**
* Alternate to Native method to get all attributes for an element as an array of nodes
* @param elem the element whose attributes are required. This alternate is required
* because of sketchy support for the attributes property in various browsers including IE
* @return
*/
private HTMLAttributeNode[] attributeList = null;
private ArrayList<String> attributeNames = null;
private ArrayList<NamespaceBinding> namespaceBindings = null;
private ArrayList<String> getAttributeNames() {
if (attributeNames != null) {
return attributeNames;
} else {
getAltAttributes();
return attributeNames;
}
}
private HTMLAttributeNode[] getAltAttributes() {
if (attributeList != null) {
return attributeList;
}
Element elem = (Element)node;
// Browser implementations of attributes property are potentially buggy - but preferred to
// parsing the string. But IE6 and IE7 both list all possible attributes whether they
// exist or not - so use outerHTML in these cases.
int ieVersion = Configuration.getIeVersion();
if (ieVersion < 0 || ieVersion > 8) {
return getMainAttributes(elem);
}
String value = getOuterHTML(elem);
if (value == null) {
return getMainAttributes(elem);
}
ArrayList<String> nodeNames = new ArrayList<String>();
ArrayList<String> xmlnsNames = new ArrayList<String>();
ArrayList<String> xmlnsUris = new ArrayList<String>();
namespaceBindings = new ArrayList<NamespaceBinding>();
RegExp quotesPattern = RegExp.compile("(?:\"(.|\n)*?\"|\'(.|\n)*?\'|[^\'\"]+|['\"])", "gm"); // g=global: = all-matches m=multiline
MatchResult m = quotesPattern.exec(value);
int i = 0;
String nonQ = "";
boolean awaitingXmlnsUri = false;
while (quotesPattern.getLastIndex() > 0) {
if (i % 2 == 0) {
nonQ = m.getGroup(0); // not in quotes - so check
StringBuffer sb = new StringBuffer();
boolean endOfTag = false;
boolean isName = !(i == 0);// first part is not a name: e.g. \r\n<H1 style="
int start = 0;
if (i == 0) {
start = nonQ.indexOf('<') + 1;
}
for (int x = start; x < nonQ.length(); x++) {
int[] offsetChar = skipWhitespace(x, nonQ, false);
int offset = offsetChar[0];
if(offset > 0 && !(isName)) {
// no whitespace allow in an unquoted value, so we're back on a name
isName = true;
}
char ch = (char)offsetChar[1];
if (ch == '\0') break;
if (ch == '=') {
// part after the '=' is the value, until next whitespace
isName = false;
String attName = sb.toString();
if (attName.startsWith("xmlns")) {
xmlnsNames.add(attName);
awaitingXmlnsUri = true;
} else if(attName.length() != 0) {
nodeNames.add(attName);
awaitingXmlnsUri = false;
}
sb = new StringBuffer();
continue;
} else if (ch == '>') {
endOfTag = true;
break;
}
if (isName) {
sb.append(ch);
}
x += offset;
} // end for
if (endOfTag) {
break;
}
} else if (awaitingXmlnsUri) {// ends if i % 2
xmlnsUris.add(m.getGroup(0));
}
i++;
m = quotesPattern.exec(value);
} // end while
HTMLAttributeNode[] nodeArray = new HTMLAttributeNode[nodeNames.size()];
for (int y = 0; y < nodeNames.size(); y++) {
String name = nodeNames.get(y);
String nValue = getAltAttribute(name); // elem.getAttribute(name);
// must be html because using outerHTML attribute - so no namespaces
HTMLAttributeNode hNode = new HTMLAttributeNode(this, name, "", "", nValue);
nodeArray[y] = hNode;
}
int count = 0;
for (String name: xmlnsNames) {
// use substring to exclude xmlns: prefix
boolean noPrefix = (name.length() == 5);
String prefix = (noPrefix)? "": name.substring(6);
// xmlns declarations with prefixes can't be fetched using getAttribute
String attValue = (noPrefix)? getAltAttribute(name) : trimEdgeChars(xmlnsUris.get(count));
namespaceBindings.add(new NamespaceBinding(prefix, attValue));
count++;
}
attributeList = nodeArray; // for later use
attributeNames = nodeNames;
return nodeArray;
}
private String trimEdgeChars(String name) {
return name.substring(1, name.length() - 1);
}
private HTMLAttributeNode[] getMainAttributes(Element elem) {
JsArray<Node> attributes = getAttributes((Element)node);
ArrayList<String> nodeNames = new ArrayList<String>();
int len = attributes.length();
ArrayList<HTMLAttributeNode> nodeAtts = new ArrayList<HTMLAttributeNode>();
namespaceBindings = new ArrayList<NamespaceBinding>();
// assume attributes within HTML doc have no namespace - unless they have a prefix
boolean getNamespaces = (docWrapper.getDocType() != DocType.HTML);
for (int i=0; i<len; i++) {
Node attNode = attributes.get(i);
String name = attNode.getNodeName();
String val = "";
try {
val = getValue(attNode); // changed for compatibility
} catch(Exception e){
String rp = getTypeOfNodeValue(attNode);
String a = "a"; //kilroy
}
if (name.startsWith("xmlns:")) {
namespaceBindings.add(new NamespaceBinding(name.substring(6),val));
} else if (name.equals("xmlns")){
namespaceBindings.add(new NamespaceBinding("",val));
} else {
if(getNamespaces || name.indexOf(':') > -1){
String pfx = getNodePrefix(attNode);
String uri = getNodeURI(attNode, true);
String local = getLocalName(attNode);
if(uri == null){uri = "";} // xhtml attributes use xlink namespace!
nodeAtts.add(new HTMLAttributeNode(this, local, pfx, uri, val));
} else {
nodeAtts.add(new HTMLAttributeNode(this, name, "", "", val));
}
nodeNames.add(name);
}
}
HTMLAttributeNode[] nodes = new HTMLAttributeNode[nodeAtts.size()];
nodeAtts.toArray(nodes);
attributeList = nodes; // for later use
attributeNames = nodeNames;
return nodes;
}
/**
* Get the root node - always a document node with this tree implementation
* @return the NodeInfo representing the containing document
*/
public NodeInfo getRoot() {
return docWrapper;
}
/**
* Get the root (document) node
* @return the DocumentInfo representing the containing document
*/
public DocumentInfo getDocumentRoot() {
return docWrapper;
}
/**
* Determine whether the node has any children. <br />
* Note: the result is equivalent to <br />
* getEnumeration(Axis.CHILD, AnyNodeTest.getInstance()).hasNext()
*/
public boolean hasChildNodes() {
// An attribute node has child text nodes
return nodeKind != Type.ATTRIBUTE && node.hasChildNodes();
}
/**
* Get a character string that uniquely identifies this node.
* Note: a.isSameNode(b) if and only if generateId(a)==generateId(b)
* @param buffer a buffer to contain a string that uniquely identifies this node, across all
* documents
*
*/
public void generateId(FastStringBuffer buffer) {
Navigator.appendSequentialKey(this, buffer, true);
//buffer.append(Navigator.getSequentialKey(this));
}
/**
* Get the document number of the document containing this node. For a free-standing
* orphan node, just return the hashcode.
*/
public int getDocumentNumber() {
return getDocumentRoot().getDocumentNumber();
}
/**
* Copy this node to a given outputter (deep copy)
*/
public void copy(Receiver out, int copyOptions) throws XPathException {
Navigator.copy(this, out, docWrapper.getNamePool(), copyOptions);
}
/**
* Get all namespace undeclarations and undeclarations defined on this element.
*
* @param buffer If this is non-null, and the result array fits in this buffer, then the result
* may overwrite the contents of this array, to avoid the cost of allocating a new array on the heap.
* @return An array of integers representing the namespace declarations and undeclarations present on
* this element. For a node other than an element, return null. Otherwise, the returned array is a
* sequence of namespace codes, whose meaning may be interpreted by reference to the name pool. The
* top half word of each namespace code represents the prefix, the bottom half represents the URI.
* If the bottom half is zero, then this is a namespace undeclaration rather than a declaration.
* The XML namespace is never included in the list. If the supplied array is larger than required,
* then the first unused entry will be set to -1.
* <p/>
* <p>For a node other than an element, the method returns null.</p>
*/
public NamespaceBinding[] getDeclaredNamespaces(NamespaceBinding[] buffer) {
if (nodeKind == Node.ELEMENT_NODE) {
if (namespaceBindings == null) {
this.getAltAttributes();
}
NamespaceBinding[] bindings = new NamespaceBinding[namespaceBindings.size()];
namespaceBindings.toArray(bindings);
return bindings;
} else {
return null;
}
}
/**
* The class ChildEnumeration handles not only the child axis, but also the
* following-sibling and preceding-sibling axes. It can also iterate the children
* of the start node in reverse order, something that is needed to support the
* preceding and preceding-or-ancestor axes (the latter being used by xsl:number)
*/
private final class ChildEnumeration extends AxisIteratorImpl {
private HTMLNodeWrapper start;
private HTMLNodeWrapper commonParent;
private boolean downwards; // iterate children of start node (not siblings)
private boolean forwards; // iterate in document order (not reverse order)
private boolean elementsOnly;
NodeList childNodes;
private int childNodesLength;
private int ix; // index of the current DOM node within childNodes;
// in the case of adjacent text nodes, index of the first in the group
private int currentSpan; // number of DOM nodes mapping to the current XPath node
public ChildEnumeration(HTMLNodeWrapper start,
boolean downwards, boolean forwards, boolean elementsOnly) {
this.start = start;
this.downwards = downwards;
this.forwards = forwards;
this.elementsOnly = elementsOnly;
position = 0;
currentSpan = 1;
if (downwards) {
commonParent = start;
} else {
commonParent = (HTMLNodeWrapper)start.getParent();
}
childNodes = commonParent.node.getChildNodes();
childNodesLength = childNodes.getLength();
if (downwards) {
currentSpan = 1;
if (forwards) {
ix = -1; // just before first
} else {
ix = childNodesLength; // just after last
}
} else {
ix = start.getSiblingPosition(); // at current node
currentSpan = start.span;
}
}
/**
* Starting with ix positioned at a node, which in the last in a span, calculate the length
* of the span, that is the number of DOM nodes mapped to this XPath node.
* @return the number of nodes spanned
*/
private int skipPrecedingTextNodes() {
int count = 0;
while (ix >= count) {
Node node = childNodes.getItem(ix - count);
short kind = node.getNodeType();
if (kind == Node.TEXT_NODE) {
count++;
} else {
break;
}
}
return (count == 0 ? 1 : count);
}
/**
* Starting with ix positioned at a node, which in the first in a span, calculate the length
* of the span, that is the number of DOM nodes mapped to this XPath node.
* @return the number of nodes spanned
*/
private int skipFollowingTextNodes() {
int count = 0;
int pos = ix;
final int len = childNodesLength;
while (pos < len) {
Node node = childNodes.getItem(pos);
short kind = node.getNodeType();
if (kind == Node.TEXT_NODE) {
pos++;
count++;
} else {
break;
}
}
return (count == 0 ? 1 : count);
}
public Item next() {
while (true) {
if (forwards) {
ix += currentSpan;
if (ix >= childNodesLength) {
position = -1;
return null;
} else {
currentSpan = skipFollowingTextNodes();
Node currentDomNode = childNodes.getItem(ix);
switch (currentDomNode.getNodeType()) {
case Type.PROCESSING_INSTRUCTION:
if(elementsOnly || "XML".equalsIgnoreCase(currentDomNode.getNodeName())){
continue;
} else {
break;
}
case Type.DOCUMENT_TYPE:
continue;
case Node.ELEMENT_NODE:
break;
default:
if (elementsOnly) {
continue;
} else {
break;
}
}
HTMLNodeWrapper wrapper = makeWrapper(currentDomNode, docWrapper, commonParent, ix);
wrapper.span = currentSpan;
position++;
return current = wrapper;
}
} else {
ix--;
if (ix < 0) {
position = -1;
return null;
} else {
currentSpan = skipPrecedingTextNodes();
ix -= (currentSpan - 1);
Node currentDomNode = childNodes.getItem(ix);
switch (currentDomNode.getNodeType()) {
case Type.PROCESSING_INSTRUCTION:
if(elementsOnly || "XML".equalsIgnoreCase(currentDomNode.getNodeName())){
continue;
} else {
break;
}
case Type.DOCUMENT_TYPE:
continue;
case Node.ELEMENT_NODE:
break;
default:
if (elementsOnly) {
continue;
} else {
break;
}
}
HTMLNodeWrapper wrapper = makeWrapper(currentDomNode, docWrapper, commonParent, ix);
wrapper.span = currentSpan;
position++;
return current = wrapper;
}
}
}
}
public SequenceIterator getAnother() {
return new ChildEnumeration(start, downwards, forwards, elementsOnly);
}
/**
* Get properties of this iterator, as a bit-significant integer.
*
* @return the properties of this iterator. This will be some combination of
* properties such as {@link #GROUNDED}, {@link #LAST_POSITION_FINDER}. It is always
* acceptable to return the value zero, indicating that there are no known special properties.
* It is acceptable for the properties of the iterator to change depending on its state.
*/
public int getProperties() {
return 0;
}
} // end of class ChildEnumeration
}
// This Source Code Form is subject to the terms of the Mozilla Public License, v. 2.0.
// If a copy of the MPL was not distributed with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
// This Source Code Form is “Incompatible With Secondary Licenses”, as defined by the Mozilla Public License, v. 2.0.