blob: cd5d2e03e6637bf5ab7f480d8df7b21c2ef59cc9 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
|
/*
* Copyright (c) 2021, Luke Wilde <lukew@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <LibJS/Heap/Heap.h>
#include <LibWeb/DOM/Document.h>
#include <LibWeb/DOM/DocumentFragment.h>
#include <LibWeb/DOMParsing/InnerHTML.h>
#include <LibWeb/HTML/Parser/HTMLParser.h>
#include <LibWeb/WebIDL/ExceptionOr.h>
namespace Web::DOMParsing {
// https://w3c.github.io/DOM-Parsing/#dfn-fragment-parsing-algorithm
WebIDL::ExceptionOr<JS::NonnullGCPtr<DOM::DocumentFragment>> parse_fragment(DeprecatedString const& markup, DOM::Element& context_element)
{
// FIXME: Handle XML documents.
auto& realm = context_element.realm();
auto new_children = HTML::HTMLParser::parse_html_fragment(context_element, markup);
auto fragment = MUST_OR_THROW_OOM(realm.heap().allocate<DOM::DocumentFragment>(realm, context_element.document()));
for (auto& child : new_children) {
// I don't know if this can throw here, but let's be safe.
(void)TRY(fragment->append_child(*child));
}
return fragment;
}
// https://w3c.github.io/DOM-Parsing/#dom-innerhtml-innerhtml
WebIDL::ExceptionOr<void> inner_html_setter(JS::NonnullGCPtr<DOM::Node> context_object, DeprecatedString const& value)
{
// 1. Let context element be the context object's host if the context object is a ShadowRoot object, or the context object otherwise.
// (This is handled in Element and ShadowRoot)
JS::NonnullGCPtr<DOM::Element> context_element = is<DOM::ShadowRoot>(*context_object) ? *verify_cast<DOM::ShadowRoot>(*context_object).host() : verify_cast<DOM::Element>(*context_object);
// 2. Let fragment be the result of invoking the fragment parsing algorithm with the new value as markup, and with context element.
auto fragment = TRY(parse_fragment(value, context_element));
// 3. If the context object is a template element, then let context object be the template's template contents (a DocumentFragment).
if (is<HTML::HTMLTemplateElement>(*context_object))
context_object = verify_cast<HTML::HTMLTemplateElement>(*context_object).content();
// 4. Replace all with fragment within the context object.
context_object->replace_all(fragment);
// NOTE: We don't invalidate style & layout for <template> elements since they don't affect rendering.
if (!is<HTML::HTMLTemplateElement>(*context_object)) {
context_object->set_needs_style_update(true);
// NOTE: Since the DOM has changed, we have to rebuild the layout tree.
context_object->document().invalidate_layout();
context_object->document().set_needs_layout();
}
return {};
}
}
|
