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[quickjs] element.matches

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Also change querySelector and querySelectorAll.
They search from current node, not root.
This commit is contained in:
Witold Filipczyk 2021-11-27 19:27:30 +01:00
parent 73e84f3db4
commit 17a68b0cfd
2 changed files with 66 additions and 0 deletions
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51
src/ecmascript/quickjs/element.c
View File

@ -1396,6 +1396,46 @@ js_element_isSameNode(JSContext *ctx, JSValueConst this_val, int argc, JSValueCo
return JS_NewBool(ctx, (el == el2));
}
static JSValue
js_element_matches(JSContext *ctx, JSValueConst this_val, int argc, JSValueConst *argv)
{
#ifdef ECMASCRIPT_DEBUG
fprintf(stderr, "%s:%s\n", __FILE__, __FUNCTION__);
#endif
if (argc != 1) {
return JS_UNDEFINED;
}
xmlpp::Element *el = JS_GetOpaque(this_val, js_element_class_id);
if (!el) {
return JS_FALSE;
}
const char *str;
size_t len;
str = JS_ToCStringLen(ctx, &len, argv[0]);
if (!str) {
return JS_EXCEPTION;
}
xmlpp::ustring css = str;
xmlpp::ustring xpath = css2xpath(css);
if (xpath[0] == '/' && xpath[1] == '/')
{
xpath = xmlpp::ustring("descendant-or-self::") + xpath.substr(2);
}
JS_FreeCString(ctx, str);
xmlpp::Node::NodeSet elements;
try {
elements = el->find(xpath);
} catch (xmlpp::exception) {
return JS_FALSE;
}
return JS_NewBool(ctx, elements.size());
}
static JSValue
js_element_querySelector(JSContext *ctx, JSValueConst this_val, int argc, JSValueConst *argv)
{
@ -1419,6 +1459,11 @@ js_element_querySelector(JSContext *ctx, JSValueConst this_val, int argc, JSValu
}
xmlpp::ustring css = str;
xmlpp::ustring xpath = css2xpath(css);
if (xpath[0] == '/' && xpath[1] == '/')
{
xpath = xmlpp::ustring("descendant-or-self::") + xpath.substr(2);
}
JS_FreeCString(ctx, str);
xmlpp::Node::NodeSet elements;
@ -1459,6 +1504,11 @@ js_element_querySelectorAll(JSContext *ctx, JSValueConst this_val, int argc, JSV
}
xmlpp::ustring css = str;
xmlpp::ustring xpath = css2xpath(css);
if (xpath[0] == '/' && xpath[1] == '/')
{
xpath = xmlpp::ustring("descendant-or-self::") + xpath.substr(2);
}
JS_FreeCString(ctx, str);
xmlpp::Node::NodeSet *elements = new(std::nothrow) xmlpp::Node::NodeSet;
@ -1619,6 +1669,7 @@ static const JSCFunctionListEntry js_element_proto_funcs[] = {
JS_CFUNC_DEF("insertBefore", 2, js_element_insertBefore),
JS_CFUNC_DEF("isEqualNode", 1, js_element_isEqualNode),
JS_CFUNC_DEF("isSameNode", 1, js_element_isSameNode),
JS_CFUNC_DEF("matches",1, js_element_matches),
JS_CFUNC_DEF("querySelector",1, js_element_querySelector),
JS_CFUNC_DEF("querySelectorAll",1, js_element_querySelectorAll),
JS_CFUNC_DEF("remove", 0, js_element_remove),

15
test/ecmascript/matches.html Normal file
View File

@ -0,0 +1,15 @@
<ul id="birds">
<li>Orange-winged parrot</li>
<li class="endangered">Philippine eagle</li>
<li>Great white pelican</li>
</ul>
<script type="text/javascript">
var birds = document.getElementsByTagName('li');
for (var i = 0; i < birds.length; i++) {
if (birds[i].matches('.endangered')) {
alert('The ' + birds[i].textContent + ' is endangered!');
}
}
</script>