/**
* Create a new HTML element with the given tag name.
*
* @param tagName the tag name
* @return the new HTML element, or NOT_FOUND if the tag is not supported
*/
@JsxFunction
public Object createElement(String tagName) {
Object result = NOT_FOUND;
try {
final BrowserVersion browserVersion = getBrowserVersion();
// FF3.6 supports document.createElement('div') or supports document.createElement('<div>')
// but not document.createElement('<div name="test">')
// IE9- supports also document.createElement('<div name="test">')
// FF4+ and IE11 don't support document.createElement('<div>')
if (browserVersion.hasFeature(BrowserVersionFeatures.JS_DOCUMENT_CREATE_ELEMENT_STRICT)
&& (tagName.contains("<") || tagName.contains(">"))) {
LOG.info(
"createElement: Provided string '"
+ tagName
+ "' contains an invalid character; '<' and '>' are not allowed");
throw Context.reportRuntimeError("String contains an invalid character");
} else if (!browserVersion.hasFeature(JS_DOCUMENT_CREATE_ELEMENT_EXTENDED_SYNTAX)
&& tagName.startsWith("<")
&& tagName.endsWith(">")) {
tagName = tagName.substring(1, tagName.length() - 1);
final Matcher matcher = TAG_NAME_PATTERN.matcher(tagName);
if (!matcher.matches()) {
LOG.info(
"createElement: Provided string '" + tagName + "' contains an invalid character");
throw Context.reportRuntimeError("String contains an invalid character");
}
}
final SgmlPage page = getPage();
final org.w3c.dom.Node element;
if ("comment".equalsIgnoreCase(tagName)
&& browserVersion.hasFeature(JS_DOCUMENT_CREATE_ELEMENT_COMMENT)) {
element = new DomComment(page, "");
} else {
element = page.createElement(tagName);
if (element instanceof BaseFrameElement) {
((BaseFrameElement) element).markAsCreatedByJavascript();
} else if (element instanceof HtmlInput) {
((HtmlInput) element).markAsCreatedByJavascript();
} else if (element instanceof HtmlImage) {
((HtmlImage) element).markAsCreatedByJavascript();
} else if (element instanceof HtmlKeygen) {
((HtmlKeygen) element).markAsCreatedByJavascript();
} else if (element instanceof HtmlRp) {
((HtmlRp) element).markAsCreatedByJavascript();
} else if (element instanceof HtmlRt) {
((HtmlRt) element).markAsCreatedByJavascript();
} else if (element instanceof HtmlUnknownElement) {
((HtmlUnknownElement) element).markAsCreatedByJavascript();
}
}
final Object jsElement;
if ("event".equalsIgnoreCase(tagName)
&& browserVersion.hasFeature(JS_DOCUMENT_CREATE_ELEMENT_COMMENT)) {
jsElement = new SimpleScriptable();
((SimpleScriptable) jsElement).setClassName("Object");
((SimpleScriptable) jsElement).setParentScope(window_);
} else {
jsElement = getScriptableFor(element);
}
if (jsElement == NOT_FOUND) {
if (LOG.isDebugEnabled()) {
LOG.debug(
"createElement("
+ tagName
+ ") cannot return a result as there isn't a JavaScript object for the element "
+ element.getClass().getName());
}
} else {
result = jsElement;
}
} catch (final ElementNotFoundException e) {
// Just fall through - result is already set to NOT_FOUND
}
return result;
}
