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Serenity Operating System
1/*
2 * Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are met:
7 *
8 * 1. Redistributions of source code must retain the above copyright notice, this
9 * list of conditions and the following disclaimer.
10 *
11 * 2. Redistributions in binary form must reproduce the above copyright notice,
12 * this list of conditions and the following disclaimer in the documentation
13 * and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
16 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
18 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
21 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
22 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
23 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
24 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 */
26
27#include <AK/FlyString.h>
28#include <LibJS/Interpreter.h>
29#include <LibJS/Runtime/Array.h>
30#include <LibJS/Runtime/Error.h>
31#include <LibJS/Runtime/PrimitiveString.h>
32#include <LibJS/Runtime/Value.h>
33#include <LibWeb/Bindings/DocumentWrapper.h>
34#include <LibWeb/DOM/Document.h>
35#include <LibWeb/DOM/Element.h>
36
37namespace Web {
38namespace Bindings {
39
40DocumentWrapper::DocumentWrapper(Document& document)
41 : NodeWrapper(document)
42{
43 put_native_function("getElementById", get_element_by_id, 1);
44 put_native_function("querySelectorAll", query_selector_all, 1);
45}
46
47DocumentWrapper::~DocumentWrapper()
48{
49}
50
51Document& DocumentWrapper::node()
52{
53 return static_cast<Document&>(NodeWrapper::node());
54}
55
56const Document& DocumentWrapper::node() const
57{
58 return static_cast<const Document&>(NodeWrapper::node());
59}
60
61static Document* document_from(JS::Interpreter& interpreter)
62{
63 auto* this_object = interpreter.this_value().to_object(interpreter.heap());
64 if (!this_object)
65 return {};
66 if (StringView("DocumentWrapper") != this_object->class_name()) {
67 interpreter.throw_exception<JS::Error>("TypeError", "That's not a DocumentWrapper, bro.");
68 return {};
69 }
70 return &static_cast<DocumentWrapper*>(this_object)->node();
71}
72
73JS::Value DocumentWrapper::get_element_by_id(JS::Interpreter& interpreter)
74{
75 auto* document = document_from(interpreter);
76 if (!document)
77 return {};
78 auto& arguments = interpreter.call_frame().arguments;
79 if (arguments.is_empty())
80 return JS::js_null();
81 auto id = arguments[0].to_string();
82 auto* element = document->get_element_by_id(id);
83 if (!element)
84 return JS::js_null();
85 return wrap(interpreter.heap(), const_cast<Element&>(*element));
86}
87
88JS::Value DocumentWrapper::query_selector_all(JS::Interpreter& interpreter)
89{
90 auto* document = document_from(interpreter);
91 if (!document)
92 return {};
93 auto& arguments = interpreter.call_frame().arguments;
94 if (arguments.is_empty())
95 return JS::js_null();
96 auto selector = arguments[0].to_string();
97 auto elements = document->query_selector_all(selector);
98 // FIXME: This should be a static NodeList, not a plain JS::Array.
99 auto* node_list = interpreter.heap().allocate<JS::Array>();
100 for (auto& element : elements) {
101 node_list->push(wrap(interpreter.heap(), element));
102 }
103 return node_list;
104}
105
106}
107}