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LibWeb: Add naive support for document.querySelectorAll()

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This currently returns a JS::Array of elements matching a selector.
The more correct behavior would be to return a static NodeList, but as
we don't have NodeLists right now, that'll be a task for the future.
This commit is contained in:
Andreas Kling 2020-03-29 22:24:23 +02:00
parent c56acba75e
commit 0f7bcd4111
11 changed files with 182 additions and 78 deletions
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39
Libraries/LibWeb/Bindings/DocumentWrapper.cpp
View file

@ -26,6 +26,8 @@
#include <AK/FlyString.h>
#include <LibJS/Interpreter.h>
#include <LibJS/Runtime/Array.h>
#include <LibJS/Runtime/Error.h>
#include <LibJS/Runtime/PrimitiveString.h>
#include <LibJS/Runtime/Value.h>
#include <LibWeb/Bindings/DocumentWrapper.h>
@ -39,6 +41,7 @@ DocumentWrapper::DocumentWrapper(Document& document)
: NodeWrapper(document)
{
put_native_function("getElementById", get_element_by_id);
put_native_function("querySelectorAll", query_selector_all);
}
DocumentWrapper::~DocumentWrapper()
@ -55,22 +58,50 @@ const Document& DocumentWrapper::node() const
return static_cast<const Document&>(NodeWrapper::node());
}
JS::Value DocumentWrapper::get_element_by_id(JS::Interpreter& interpreter)
static Document* document_from(JS::Interpreter& interpreter)
{
auto* this_object = interpreter.this_value().to_object(interpreter.heap());
if (!this_object)
return {};
// FIXME: Verify that it's a DocumentWrapper somehow!
auto& node = static_cast<DocumentWrapper*>(this_object)->node();
if (StringView("DocumentWrapper") != this_object->class_name()) {
interpreter.throw_exception<JS::Error>("TypeError", "That's not a DocumentWrapper, bro.");
return {};
}
return &static_cast<DocumentWrapper*>(this_object)->node();
}
JS::Value DocumentWrapper::get_element_by_id(JS::Interpreter& interpreter)
{
auto* document = document_from(interpreter);
if (!document)
return {};
auto& arguments = interpreter.call_frame().arguments;
if (arguments.is_empty())
return JS::js_null();
auto id = arguments[0].to_string();
auto* element = node.get_element_by_id(id);
auto* element = document->get_element_by_id(id);
if (!element)
return JS::js_null();
return wrap(interpreter.heap(), const_cast<Element&>(*element));
}
JS::Value DocumentWrapper::query_selector_all(JS::Interpreter& interpreter)
{
auto* document = document_from(interpreter);
if (!document)
return {};
auto& arguments = interpreter.call_frame().arguments;
if (arguments.is_empty())
return JS::js_null();
auto selector = arguments[0].to_string();
auto elements = document->query_selector_all(selector);
// FIXME: This should be a static NodeList, not a plain JS::Array.
auto* node_list = interpreter.heap().allocate<JS::Array>();
for (auto& element : elements) {
node_list->push(wrap(interpreter.heap(), element));
}
return node_list;
}
}
}