/**
* Returns the value of the specified attribute.
*
* @param attributeName attribute name
* @param flags IE-specific flags (see the MSDN documentation for more info)
* @return the value of the specified attribute, <code>null</code> if the attribute is not defined
* @see <a href="http://msdn.microsoft.com/en-us/library/ms536429.aspx">MSDN Documentation</a>
* @see <a href="http://reference.sitepoint.com/javascript/Element/getAttribute">IE Bug
* Documentation</a>
*/
@JsxFunction
public Object getAttribute(String attributeName, final Integer flags) {
attributeName = fixAttributeName(attributeName);
final Page page = getDomNodeOrDie().getPage();
final boolean supportsFlags =
getBrowserVersion().hasFeature(JS_GET_ATTRIBUTE_SUPPORTS_FLAGS_IN_QUIRKS_MODE)
&& page instanceof HtmlPage
&& ((HtmlPage) page).isQuirksMode();
Object value;
if (supportsFlags && flags != null && flags == 2 && "style".equalsIgnoreCase(attributeName)) {
value = "";
} else {
value = getDomNodeOrDie().getAttribute(attributeName);
}
if (value == DomElement.ATTRIBUTE_NOT_DEFINED) {
value = null;
if (supportsFlags) {
for (Scriptable object = this; object != null; object = object.getPrototype()) {
final Object property = object.get(attributeName, this);
if (property != NOT_FOUND) {
value = property;
break;
}
}
}
}
return value;
}
/** Returns the value of a property on the given script object. */
private Object getObjectPropertyImpl(Context cx, Object object, Object id) {
Scriptable scriptable = (Scriptable) object;
Object result;
if (id instanceof String) {
String name = (String) id;
if (name.equals("this")) {
result = scriptable;
} else if (name.equals("__proto__")) {
result = scriptable.getPrototype();
} else if (name.equals("__parent__")) {
result = scriptable.getParentScope();
} else {
result = ScriptableObject.getProperty(scriptable, name);
if (result == ScriptableObject.NOT_FOUND) {
result = Undefined.instance;
}
}
} else {
int index = ((Integer) id).intValue();
result = ScriptableObject.getProperty(scriptable, index);
if (result == ScriptableObject.NOT_FOUND) {
result = Undefined.instance;
}
}
return result;
}
/** Returns an array of the property names on the given script object. */
private Object[] getObjectIdsImpl(Context cx, Object object) {
if (!(object instanceof Scriptable) || object == Undefined.instance) {
return Context.emptyArgs;
}
Object[] ids;
Scriptable scriptable = (Scriptable) object;
if (scriptable instanceof DebuggableObject) {
ids = ((DebuggableObject) scriptable).getAllIds();
} else {
ids = scriptable.getIds();
}
Scriptable proto = scriptable.getPrototype();
Scriptable parent = scriptable.getParentScope();
int extra = 0;
if (proto != null) {
++extra;
}
if (parent != null) {
++extra;
}
if (extra != 0) {
Object[] tmp = new Object[extra + ids.length];
System.arraycopy(ids, 0, tmp, extra, ids.length);
ids = tmp;
extra = 0;
if (proto != null) {
ids[extra++] = "__proto__";
}
if (parent != null) {
ids[extra++] = "__parent__";
}
}
return ids;
}
private boolean isAccepted(final Node node) {
if (filter_ == null) {
return true;
}
Function function = null;
if (filter_ instanceof Function) {
function = (Function) filter_;
}
final Object acceptNode = filter_.get("acceptNode", filter_);
if (acceptNode instanceof Function) {
function = (Function) acceptNode;
}
if (function != null) {
final double value =
Context.toNumber(
function.call(
Context.getCurrentContext(), getParentScope(), this, new Object[] {node}));
return value == NodeFilter.FILTER_ACCEPT;
}
return true;
}