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[js] getElementsByTagName

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TODO: sanitize input for this function
This commit is contained in:
Witold Filipczyk 2021-05-12 16:23:46 +02:00
parent 3e30d82fb4
commit d22e77a796
2 changed files with 85 additions and 3 deletions
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66
src/ecmascript/spidermonkey/document.c
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@ -463,14 +463,16 @@ static bool document_write(JSContext *ctx, unsigned int argc, JS::Value *rval);
static bool document_writeln(JSContext *ctx, unsigned int argc, JS::Value *rval); static bool document_writeln(JSContext *ctx, unsigned int argc, JS::Value *rval);
static bool document_replace(JSContext *ctx, unsigned int argc, JS::Value *rval); static bool document_replace(JSContext *ctx, unsigned int argc, JS::Value *rval);
static bool document_getElementById(JSContext *ctx, unsigned int argc, JS::Value *rval); static bool document_getElementById(JSContext *ctx, unsigned int argc, JS::Value *rval);
static bool document_getElementByName(JSContext *ctx, unsigned int argc, JS::Value *rval); static bool document_getElementsByName(JSContext *ctx, unsigned int argc, JS::Value *rval);
static bool document_getElementsByTagName(JSContext *ctx, unsigned int argc, JS::Value *rval);
const spidermonkeyFunctionSpec document_funcs[] = { const spidermonkeyFunctionSpec document_funcs[] = {
{ "write", document_write, 1 }, { "write", document_write, 1 },
{ "writeln", document_writeln, 1 }, { "writeln", document_writeln, 1 },
{ "replace", document_replace, 1 }, { "replace", document_replace, 1 },
{ "getElementById", document_getElementById, 1 }, { "getElementById", document_getElementById, 1 },
{ "getElementsByName", document_getElementByName, 1 }, { "getElementsByName", document_getElementsByName, 1 },
{ "getElementsByTagName", document_getElementsByTagName, 1 },
{ NULL } { NULL }
}; };
@ -769,7 +771,7 @@ document_getElementById(JSContext *ctx, unsigned int argc, JS::Value *vp)
} }
static bool static bool
document_getElementByName(JSContext *ctx, unsigned int argc, JS::Value *vp) document_getElementsByName(JSContext *ctx, unsigned int argc, JS::Value *vp)
{ {
JS::CallArgs args = CallArgsFromVp(argc, vp); JS::CallArgs args = CallArgsFromVp(argc, vp);
@ -827,3 +829,61 @@ document_getElementByName(JSContext *ctx, unsigned int argc, JS::Value *vp)
return true; return true;
} }
static bool
document_getElementsByTagName(JSContext *ctx, unsigned int argc, JS::Value *vp)
{
JS::CallArgs args = CallArgsFromVp(argc, vp);
if (argc != 1) {
args.rval().setBoolean(false);
return true;
}
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::Element* root = (xmlpp::Element *)document->dom;
struct string idstr;
init_string(&idstr);
jshandle_value_to_char_string(&idstr, ctx, &args[0]);
std::string id = idstr.source;
std::transform(id.begin(), id.end(), id.begin(), ::tolower);
std::string xpath = "//";
xpath += id;
done_string(&idstr);
xmlpp::Node::NodeSet *elements = new xmlpp::Node::NodeSet;
*elements = root->find(xpath);
if (elements->size() == 0) {
args.rval().setNull();
return true;
}
JSObject *elem = getCollection(ctx, elements);
if (elem) {
args.rval().setObject(*elem);
} else {
args.rval().setNull();
}
return true;
}

22
test/ecmascript/getElementsByTagName.html Normal file
View File

@ -0,0 +1,22 @@
<!DOCTYPE html>
<html>
<body>
First Name: <input name="fname" type="text" value="Michael"><br>
First Name: <input name="fname" type="text" value="Doug">
<p>Click the button to get the tag name of the first element in the document that has a name attribute with the value "fname".</p>
<button onclick="myFunction()">Try it</button>
<p id="demo"></p>
<script>
function myFunction() {
var x = document.getElementsByTagName("P").item(1).outerHTML;
alert(x);
}
</script>
</body>
</html>