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[js] document.doctype.name

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This commit is contained in:
Witold Filipczyk 2021-05-25 18:12:04 +02:00
parent 97e1e86e66
commit 35404925e0
2 changed files with 127 additions and 0 deletions
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106
src/ecmascript/spidermonkey/document.c
View File

@ -55,6 +55,8 @@
#include <iostream>
static JSObject *getDoctype(JSContext *ctx, void *node);
static bool document_get_property(JSContext *ctx, JS::HandleObject hobj, JS::HandleId hid, JS::MutableHandleValue hvp);
static void *document_parse(struct document *document);
@ -299,6 +301,42 @@ document_get_property_charset(JSContext *ctx, unsigned int argc, JS::Value *vp)
return true;
}
static bool
document_get_property_doctype(JSContext *ctx, unsigned int argc, JS::Value *vp)
{
JS::CallArgs args = CallArgsFromVp(argc, vp);
JSCompartment *comp = js::GetContextCompartment(ctx);
struct ecmascript_interpreter *interpreter = JS_GetCompartmentPrivate(comp);
struct document_view *doc_view = interpreter->vs->doc_view;
struct document *document = doc_view->document;
if (!document->dom) {
document->dom = document_parse(document);
}
if (!document->dom) {
args.rval().setNull();
return true;
}
xmlpp::Document* docu = (xmlpp::Document *)document->dom;
xmlpp::Dtd *dtd = docu->get_internal_subset();
if (!dtd) {
args.rval().setNull();
return true;
}
JSObject *elem = getDoctype(ctx, dtd);
if (elem) {
args.rval().setObject(*elem);
} else {
args.rval().setNull();
}
return true;
}
static bool
document_get_property_documentElement(JSContext *ctx, unsigned int argc, JS::Value *vp)
@ -923,6 +961,7 @@ JSPropertySpec document_props[] = {
JS_PSG("charset", document_get_property_charset, JSPROP_ENUMERATE),
JS_PSG("characterSet", document_get_property_charset, JSPROP_ENUMERATE),
JS_PSG("doctype", document_get_property_doctype, JSPROP_ENUMERATE),
JS_PSG("documentElement", document_get_property_documentElement, JSPROP_ENUMERATE),
JS_PSG("documentURI", document_get_property_documentURI, JSPROP_ENUMERATE),
JS_PSG("domain", document_get_property_domain, JSPROP_ENUMERATE),
@ -1476,3 +1515,70 @@ document_getElementsByTagName(JSContext *ctx, unsigned int argc, JS::Value *vp)
return true;
}
JSClassOps doctype_ops = {
JS_PropertyStub, nullptr,
JS_PropertyStub, JS_StrictPropertyStub,
nullptr, nullptr, nullptr
};
JSClass doctype_class = {
"doctype",
JSCLASS_HAS_PRIVATE,
&doctype_ops
};
static bool
doctype_get_property_name(JSContext *ctx, unsigned int argc, JS::Value *vp)
{
JS::CallArgs args = CallArgsFromVp(argc, vp);
JS::RootedObject hobj(ctx, &args.thisv().toObject());
JSCompartment *comp = js::GetContextCompartment(ctx);
if (!comp) {
return false;
}
struct ecmascript_interpreter *interpreter = JS_GetCompartmentPrivate(comp);
/* This can be called if @obj if not itself an instance of the
* appropriate class but has one in its prototype chain. Fail
* such calls. */
if (!JS_InstanceOf(ctx, hobj, &doctype_class, NULL))
return false;
xmlpp::Dtd *dtd = JS_GetPrivate(hobj);
if (!dtd) {
args.rval().setNull();
return true;
}
std::string v = dtd->get_name();
args.rval().setString(JS_NewStringCopyZ(ctx, v.c_str()));
return true;
}
JSPropertySpec doctype_props[] = {
JS_PSG("name", doctype_get_property_name, JSPROP_ENUMERATE),
JS_PS_END
};
static JSObject *
getDoctype(JSContext *ctx, void *node)
{
JSObject *el = JS_NewObject(ctx, &doctype_class);
if (!el) {
return NULL;
}
JS::RootedObject r_el(ctx, el);
JS_DefineProperties(ctx, r_el, (JSPropertySpec *) doctype_props);
JS_SetPrivate(el, node);
return el;
}

21
test/ecmascript/doctype.html Normal file
View File

@ -0,0 +1,21 @@
<!DOCTYPE html>
<html>
<body>
<p>Click the button to display the doctype name of the document.</p>
<button onclick="myFunction()">Try it</button>
<p><strong>Note:</strong> In Internet Explorer 8 and earlier, the doctype property returns <em>null</em> for HTML and XHTML documents, and will only work for XML documents.</p>
<p id="demo"></p>
<script>
function myFunction() {
var x = document.doctype.name;
alert(x);
}
</script>
</body>
</html>