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[js] element.insertBefore

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This commit is contained in:
Witold Filipczyk 2021-06-04 19:41:06 +02:00
parent 040ab5a189
commit 80c1c7a278
2 changed files with 84 additions and 1 deletions
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57
src/ecmascript/spidermonkey/element.c
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@ -1649,6 +1649,7 @@ static bool element_getAttributeNode(JSContext *ctx, unsigned int argc, JS::Valu
static bool element_hasAttribute(JSContext *ctx, unsigned int argc, JS::Value *rval);
static bool element_hasAttributes(JSContext *ctx, unsigned int argc, JS::Value *rval);
static bool element_hasChildNodes(JSContext *ctx, unsigned int argc, JS::Value *rval);
static bool element_insertBefore(JSContext *ctx, unsigned int argc, JS::Value *rval);
static bool element_isEqualNode(JSContext *ctx, unsigned int argc, JS::Value *rval);
static bool element_isSameNode(JSContext *ctx, unsigned int argc, JS::Value *rval);
static bool element_remove(JSContext *ctx, unsigned int argc, JS::Value *rval);
@ -1661,12 +1662,25 @@ const spidermonkeyFunctionSpec element_funcs[] = {
{ "hasAttribute", element_hasAttribute, 1 },
{ "hasAttributes", element_hasAttributes, 0 },
{ "hasChildNodes", element_hasChildNodes, 0 },
{ "isEqualNode", element_isEqualNode, 1 },
{ "insertBefore", element_insertBefore, 2 },
{ "isEqualNode", element_isEqualNode, 1 },
{ "isSameNode", element_isSameNode, 1 },
{ "setAttribute", element_setAttribute, 2 },
{ NULL }
};
// Common part of all add_child_element*() methods.
static xmlpp::Element*
el_add_child_element_common(xmlNode* child, xmlNode* node)
{
if (!node) {
xmlFreeNode(child);
throw xmlpp::internal_error("Could not add child element node");
}
xmlpp::Node::create_wrapper(node);
return static_cast<xmlpp::Element*>(node->_private);
}
static void
check_contains(xmlpp::Node *node, xmlpp::Node *searched, bool *result_set, bool *result)
@ -1882,6 +1896,47 @@ element_hasChildNodes(JSContext *ctx, unsigned int argc, JS::Value *rval)
return true;
}
static bool
element_insertBefore(JSContext *ctx, unsigned int argc, JS::Value *rval)
{
JSCompartment *comp = js::GetContextCompartment(ctx);
if (!comp || argc != 2) {
return false;
}
JS::CallArgs args = CallArgsFromVp(argc, rval);
JS::RootedObject hobj(ctx, &args.thisv().toObject());
if (!JS_InstanceOf(ctx, hobj, &element_class, NULL)) {
args.rval().setBoolean(false);
return true;
}
xmlpp::Element *el = JS_GetPrivate(hobj);
if (!el) {
return true;
}
JS::RootedObject next_sibling1(ctx, &args[1].toObject());
JS::RootedObject child1(ctx, &args[0].toObject());
xmlpp::Node *next_sibling = JS_GetPrivate(next_sibling1);
if (!next_sibling) {
return nullptr;
}
xmlpp::Node *child = JS_GetPrivate(child1);
auto node = xmlAddPrevSibling(next_sibling->cobj(), child->cobj());
auto res = el_add_child_element_common(child->cobj(), node);
JSObject *elem = getElement(ctx, res);
args.rval().setObject(*elem);
return true;
}
static bool
element_isEqualNode(JSContext *ctx, unsigned int argc, JS::Value *rval)
{

28
test/ecmascript/insertBefore.html Normal file
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@ -0,0 +1,28 @@
<!DOCTYPE html>
<html>
<body>
<ul id="myList">
<li>Coffee</li>
<li>Tea</li>
</ul>
<p>Click the button to insert an item to the list.</p>
<button onclick="myFunction()">Try it</button>
<p><strong>Example explained:</strong><br>First create a LI node,<br> then create a Text node,<br> then append the Text node to the LI node.<br>Finally insert the LI node before the first child node in the list.</p>
<script>
function myFunction() {
var newItem = document.createElement("LI");
var textnode = document.createTextNode("Water");
newItem.appendChild(textnode);
var list = document.getElementById("myList");
list.insertBefore(newItem, list.firstChild);
alert(document.getElementsByTagName("BODY")[0].outerHTML);
}
</script>
</body>
</html>