forked from SerenityOS/serenity
-
Notifications
You must be signed in to change notification settings - Fork 0
/
BrowsingContext.cpp
790 lines (641 loc) Β· 32.4 KB
/
BrowsingContext.cpp
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
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
/*
* Copyright (c) 2018-2022, Andreas Kling <[email protected]>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <LibWeb/Bindings/MainThreadVM.h>
#include <LibWeb/DOM/Document.h>
#include <LibWeb/DOM/ElementFactory.h>
#include <LibWeb/DOM/Event.h>
#include <LibWeb/DOM/HTMLCollection.h>
#include <LibWeb/DOM/Range.h>
#include <LibWeb/Fetch/Infrastructure/HTTP/Requests.h>
#include <LibWeb/HTML/BrowsingContext.h>
#include <LibWeb/HTML/BrowsingContextGroup.h>
#include <LibWeb/HTML/CrossOrigin/CrossOriginOpenerPolicy.h>
#include <LibWeb/HTML/DocumentState.h>
#include <LibWeb/HTML/EventLoop/EventLoop.h>
#include <LibWeb/HTML/HTMLAnchorElement.h>
#include <LibWeb/HTML/HTMLDocument.h>
#include <LibWeb/HTML/HTMLInputElement.h>
#include <LibWeb/HTML/NavigableContainer.h>
#include <LibWeb/HTML/RemoteBrowsingContext.h>
#include <LibWeb/HTML/SandboxingFlagSet.h>
#include <LibWeb/HTML/Scripting/WindowEnvironmentSettingsObject.h>
#include <LibWeb/HTML/TraversableNavigable.h>
#include <LibWeb/HTML/Window.h>
#include <LibWeb/HTML/WindowProxy.h>
#include <LibWeb/HighResolutionTime/TimeOrigin.h>
#include <LibWeb/Infra/Strings.h>
#include <LibWeb/Layout/BreakNode.h>
#include <LibWeb/Layout/TextNode.h>
#include <LibWeb/Layout/Viewport.h>
#include <LibWeb/Namespace.h>
#include <LibWeb/Page/Page.h>
#include <LibWeb/URL/URL.h>
namespace Web::HTML {
// https://html.spec.whatwg.org/multipage/urls-and-fetching.html#matches-about:blank
bool url_matches_about_blank(AK::URL const& url)
{
// A URL matches about:blank if its scheme is "about", its path contains a single string "blank", its username and password are the empty string, and its host is null.
return url.scheme() == "about"sv
&& url.serialize_path() == "blank"sv
&& url.raw_username().is_empty()
&& url.raw_password().is_empty()
&& url.host().has<Empty>();
}
// https://html.spec.whatwg.org/multipage/document-sequences.html#determining-the-origin
HTML::Origin determine_the_origin(AK::URL const& url, SandboxingFlagSet sandbox_flags, Optional<HTML::Origin> source_origin)
{
// 1. If sandboxFlags has its sandboxed origin browsing context flag set, then return a new opaque origin.
if (has_flag(sandbox_flags, SandboxingFlagSet::SandboxedOrigin)) {
return HTML::Origin {};
}
// FIXME: 2. If url is null, then return a new opaque origin.
// FIXME: There appears to be no way to get a null URL here, so it might be a spec bug.
// 3. If url is about:srcdoc, then:
if (url == "about:srcdoc"sv) {
// 1. Assert: sourceOrigin is non-null.
VERIFY(source_origin.has_value());
// 2. Return sourceOrigin.
return source_origin.release_value();
}
// 4. If url matches about:blank and sourceOrigin is non-null, then return sourceOrigin.
if (url_matches_about_blank(url) && source_origin.has_value())
return source_origin.release_value();
// 5. Return url's origin.
return URL::url_origin(url);
}
// https://html.spec.whatwg.org/multipage/document-sequences.html#creating-a-new-auxiliary-browsing-context
WebIDL::ExceptionOr<BrowsingContext::BrowsingContextAndDocument> BrowsingContext::create_a_new_auxiliary_browsing_context_and_document(Page& page, JS::NonnullGCPtr<HTML::BrowsingContext> opener)
{
// 1. Let openerTopLevelBrowsingContext be opener's top-level traversable's active browsing context.
auto opener_top_level_browsing_context = opener->top_level_traversable()->active_browsing_context();
// 2. Let group be openerTopLevelBrowsingContext's group.
auto group = opener_top_level_browsing_context->group();
// 3. Assert: group is non-null, as navigating invokes this directly.
VERIFY(group);
// 4. Set browsingContext and document be the result of creating a new browsing context and document with opener's active document, null, and group.
auto [browsing_context, document] = TRY(create_a_new_browsing_context_and_document(page, opener->active_document(), nullptr, *group));
// FIXME: 5. Set browsingContext's is auxiliary to true.
// 6. Append browsingContext to group.
group->append(browsing_context);
// 7. Set browsingContext's opener browsing context to opener.
browsing_context->set_opener_browsing_context(opener);
// FIXME: 8. Set browsingContext's virtual browsing context group ID to openerTopLevelBrowsingContext's virtual browsing context group ID.
// FIXME: 9. Set browsingContext's opener origin at creation to opener's active document's origin.
// 10. Return browsingContext and document.
return BrowsingContext::BrowsingContextAndDocument { browsing_context, document };
}
// https://html.spec.whatwg.org/multipage/document-sequences.html#creating-a-new-browsing-context
WebIDL::ExceptionOr<BrowsingContext::BrowsingContextAndDocument> BrowsingContext::create_a_new_browsing_context_and_document(Page& page, JS::GCPtr<DOM::Document> creator, JS::GCPtr<DOM::Element> embedder, JS::NonnullGCPtr<BrowsingContextGroup> group)
{
auto& vm = group->vm();
// 1. Let browsingContext be a new browsing context.
JS::NonnullGCPtr<BrowsingContext> browsing_context = *vm.heap().allocate_without_realm<BrowsingContext>(page, nullptr);
// 2. Let unsafeContextCreationTime be the unsafe shared current time.
[[maybe_unused]] auto unsafe_context_creation_time = HighResolutionTime::unsafe_shared_current_time();
// 3. Let creatorOrigin be null.
Optional<Origin> creator_origin = {};
// FIXME: This algorithm needs re-aligned with the spec
Optional<AK::URL> creator_base_url = {};
// 4. If creator is non-null, then:
if (creator) {
// 1. Set creatorOrigin to creator's origin.
creator_origin = creator->origin();
// FIXME: This algorithm needs re-aligned with the spec
creator_base_url = creator->base_url();
// FIXME: 2. Set browsingContext's creator base URL to an algorithm which returns creator's base URL.
// FIXME: 3. Set browsingContext's virtual browsing context group ID to creator's browsing context's top-level browsing context's virtual browsing context group ID.
}
// FIXME: 5. Let sandboxFlags be the result of determining the creation sandboxing flags given browsingContext and embedder.
SandboxingFlagSet sandbox_flags = {};
// 6. Let origin be the result of determining the origin given about:blank, sandboxFlags, and creatorOrigin.
auto origin = determine_the_origin(AK::URL("about:blank"sv), sandbox_flags, creator_origin);
// FIXME: 7. Let permissionsPolicy be the result of creating a permissions policy given browsingContext and origin. [PERMISSIONSPOLICY]
// FIXME: 8. Let agent be the result of obtaining a similar-origin window agent given origin, group, and false.
JS::GCPtr<Window> window;
// 9. Let realm execution context be the result of creating a new JavaScript realm given agent and the following customizations:
auto realm_execution_context = Bindings::create_a_new_javascript_realm(
Bindings::main_thread_vm(),
[&](JS::Realm& realm) -> JS::Object* {
auto window_proxy = realm.heap().allocate<WindowProxy>(realm, realm);
browsing_context->set_window_proxy(window_proxy);
// - For the global object, create a new Window object.
window = Window::create(realm);
return window.ptr();
},
[&](JS::Realm&) -> JS::Object* {
// - For the global this binding, use browsingContext's WindowProxy object.
return browsing_context->window_proxy();
});
// 10. Let topLevelCreationURL be about:blank if embedder is null; otherwise embedder's relevant settings object's top-level creation URL.
auto top_level_creation_url = !embedder ? AK::URL("about:blank") : relevant_settings_object(*embedder).top_level_creation_url;
// 11. Let topLevelOrigin be origin if embedder is null; otherwise embedder's relevant settings object's top-level origin.
auto top_level_origin = !embedder ? origin : relevant_settings_object(*embedder).origin();
// 12. Set up a window environment settings object with about:blank, realm execution context, null, topLevelCreationURL, and topLevelOrigin.
WindowEnvironmentSettingsObject::setup(
AK::URL("about:blank"),
move(realm_execution_context),
{},
top_level_creation_url,
top_level_origin);
// 13. Let loadTimingInfo be a new document load timing info with its navigation start time set to the result of calling
// coarsen time with unsafeContextCreationTime and the new environment settings object's cross-origin isolated capability.
auto load_timing_info = DOM::DocumentLoadTimingInfo();
load_timing_info.navigation_start_time = HighResolutionTime::coarsen_time(
unsafe_context_creation_time,
verify_cast<WindowEnvironmentSettingsObject>(Bindings::host_defined_environment_settings_object(window->realm())).cross_origin_isolated_capability() == CanUseCrossOriginIsolatedAPIs::Yes);
// 14. Let document be a new Document, with:
auto document = HTML::HTMLDocument::create(window->realm());
// Non-standard
window->set_associated_document(*document);
// type: "html"
document->set_document_type(DOM::Document::Type::HTML);
// content type: "text/html"
document->set_content_type("text/html"_string);
// mode: "quirks"
document->set_quirks_mode(DOM::QuirksMode::Yes);
// origin: origin
document->set_origin(origin);
// browsing context: browsingContext
document->set_browsing_context(browsing_context);
// FIXME: permissions policy: permissionsPolicy
// FIXME: active sandboxing flag set: sandboxFlags
// load timing info: loadTimingInfo
document->set_load_timing_info(load_timing_info);
// is initial about:blank: true
document->set_is_initial_about_blank(true);
// about base URL: creatorBaseURL
document->set_about_base_url(creator_base_url);
// 15. If creator is non-null, then:
if (creator) {
// 1. Set document's referrer to the serialization of creator's URL.
document->set_referrer(creator->url().serialize());
// FIXME: 2. Set document's policy container to a clone of creator's policy container.
// 3. If creator's origin is same origin with creator's relevant settings object's top-level origin,
if (creator->origin().is_same_origin(creator->relevant_settings_object().top_level_origin)) {
// then set document's cross-origin opener policy to creator's browsing context's top-level browsing context's active document's cross-origin opener policy.
VERIFY(creator->browsing_context());
VERIFY(creator->browsing_context()->top_level_browsing_context()->active_document());
document->set_cross_origin_opener_policy(creator->browsing_context()->top_level_browsing_context()->active_document()->cross_origin_opener_policy());
}
}
// 16. Assert: document's URL and document's relevant settings object's creation URL are about:blank.
VERIFY(document->url() == "about:blank"sv);
VERIFY(document->relevant_settings_object().creation_url == "about:blank"sv);
// 17. Mark document as ready for post-load tasks.
document->set_ready_for_post_load_tasks(true);
// 18. Ensure that document has a single child html node, which itself has two empty child nodes: a head element, and a body element.
auto html_node = TRY(DOM::create_element(document, HTML::TagNames::html, Namespace::HTML));
auto head_element = TRY(DOM::create_element(document, HTML::TagNames::head, Namespace::HTML));
TRY(html_node->append_child(head_element));
auto body_element = TRY(DOM::create_element(document, HTML::TagNames::body, Namespace::HTML));
TRY(html_node->append_child(body_element));
TRY(document->append_child(html_node));
// 19. Make active document.
document->make_active();
// 20. Completely finish loading document.
document->completely_finish_loading();
// 21. Return browsingContext and document.
return BrowsingContext::BrowsingContextAndDocument { browsing_context, document };
}
BrowsingContext::BrowsingContext(Page& page, HTML::NavigableContainer* container)
: m_page(page)
, m_event_handler({}, *this)
, m_container(container)
{
m_cursor_blink_timer = Core::Timer::create_repeating(500, [this] {
if (!is_focused_context())
return;
if (m_cursor_position && m_cursor_position->node()->layout_node()) {
m_cursor_blink_state = !m_cursor_blink_state;
m_cursor_position->node()->layout_node()->set_needs_display();
}
}).release_value_but_fixme_should_propagate_errors();
}
BrowsingContext::~BrowsingContext() = default;
void BrowsingContext::visit_edges(Cell::Visitor& visitor)
{
Base::visit_edges(visitor);
for (auto& entry : m_session_history)
visitor.visit(entry);
visitor.visit(m_container);
visitor.visit(m_cursor_position);
visitor.visit(m_window_proxy);
visitor.visit(m_opener_browsing_context);
visitor.visit(m_group);
visitor.visit(m_parent);
visitor.visit(m_first_child);
visitor.visit(m_last_child);
visitor.visit(m_next_sibling);
visitor.visit(m_previous_sibling);
}
// https://html.spec.whatwg.org/multipage/document-sequences.html#bc-traversable
JS::NonnullGCPtr<HTML::TraversableNavigable> BrowsingContext::top_level_traversable() const
{
// A browsing context's top-level traversable is its active document's node navigable's top-level traversable.
auto traversable = active_document()->navigable()->top_level_traversable();
VERIFY(traversable);
VERIFY(traversable->is_top_level_traversable());
return *traversable;
}
void BrowsingContext::did_edit(Badge<EditEventHandler>)
{
reset_cursor_blink_cycle();
if (m_cursor_position && is<DOM::Text>(*m_cursor_position->node())) {
auto& text_node = static_cast<DOM::Text&>(*m_cursor_position->node());
if (auto* text_node_owner = text_node.editable_text_node_owner())
text_node_owner->did_edit_text_node({});
}
}
void BrowsingContext::reset_cursor_blink_cycle()
{
m_cursor_blink_state = true;
m_cursor_blink_timer->restart();
if (m_cursor_position && m_cursor_position->node()->layout_node())
m_cursor_position->node()->layout_node()->set_needs_display();
}
// https://html.spec.whatwg.org/multipage/browsers.html#top-level-browsing-context
bool BrowsingContext::is_top_level() const
{
// A browsing context that has no parent browsing context is the top-level browsing context for itself and all of the browsing contexts for which it is an ancestor browsing context.
return !parent();
}
bool BrowsingContext::is_focused_context() const
{
return m_page && &m_page->focused_context() == this;
}
void BrowsingContext::scroll_to(CSSPixelPoint position)
{
// NOTE: Scrolling to a position requires up-to-date layout *unless* we're scrolling to (0, 0)
// as (0, 0) is always guaranteed to be a valid scroll position.
if (!position.is_zero()) {
if (active_document())
active_document()->update_layout();
}
if (m_page && this == &m_page->top_level_browsing_context())
m_page->client().page_did_request_scroll_to(position);
}
JS::GCPtr<BrowsingContext> BrowsingContext::top_level_browsing_context() const
{
auto const* start = this;
// 1. If start's active document is not fully active, then return null.
if (!start->active_document()->is_fully_active()) {
return nullptr;
}
// 2. Let navigable be start's active document's node navigable.
auto navigable = start->active_document()->navigable();
// 3. While navigable's parent is not null, set navigable to navigable's parent.
while (navigable->parent()) {
navigable = navigable->parent();
}
// 4. Return navigable's active browsing context.
return navigable->active_browsing_context();
}
CSSPixelRect BrowsingContext::to_top_level_rect(CSSPixelRect const& a_rect)
{
auto rect = a_rect;
rect.set_location(to_top_level_position(a_rect.location()));
return rect;
}
CSSPixelPoint BrowsingContext::to_top_level_position(CSSPixelPoint a_position)
{
auto position = a_position;
for (auto ancestor = parent(); ancestor; ancestor = ancestor->parent()) {
if (ancestor->is_top_level())
break;
if (!ancestor->container())
return {};
if (!ancestor->container()->layout_node())
return {};
position.translate_by(ancestor->container()->layout_node()->box_type_agnostic_position());
}
return position;
}
void BrowsingContext::set_cursor_position(JS::NonnullGCPtr<DOM::Position> position)
{
if (m_cursor_position && m_cursor_position->equals(position))
return;
if (m_cursor_position && m_cursor_position->node()->layout_node())
m_cursor_position->node()->layout_node()->set_needs_display();
m_cursor_position = position;
if (m_cursor_position && m_cursor_position->node()->layout_node())
m_cursor_position->node()->layout_node()->set_needs_display();
reset_cursor_blink_cycle();
}
static DeprecatedString visible_text_in_range(DOM::Range const& range)
{
// NOTE: This is an adaption of Range stringification, but we skip over DOM nodes that don't have a corresponding layout node.
StringBuilder builder;
if (range.start_container() == range.end_container() && is<DOM::Text>(*range.start_container())) {
if (!range.start_container()->layout_node())
return ""sv;
return MUST(static_cast<DOM::Text const&>(*range.start_container()).data().substring_from_byte_offset(range.start_offset(), range.end_offset() - range.start_offset())).to_deprecated_string();
}
if (is<DOM::Text>(*range.start_container()) && range.start_container()->layout_node())
builder.append(static_cast<DOM::Text const&>(*range.start_container()).data().bytes_as_string_view().substring_view(range.start_offset()));
for (DOM::Node const* node = range.start_container(); node != range.end_container()->next_sibling(); node = node->next_in_pre_order()) {
if (is<DOM::Text>(*node) && range.contains_node(*node) && node->layout_node())
builder.append(static_cast<DOM::Text const&>(*node).data());
}
if (is<DOM::Text>(*range.end_container()) && range.end_container()->layout_node())
builder.append(static_cast<DOM::Text const&>(*range.end_container()).data().bytes_as_string_view().substring_view(0, range.end_offset()));
return builder.to_deprecated_string();
}
DeprecatedString BrowsingContext::selected_text() const
{
auto* document = active_document();
if (!document)
return ""sv;
auto selection = const_cast<DOM::Document&>(*document).get_selection();
auto range = selection->range();
if (!range)
return ""sv;
return visible_text_in_range(*range);
}
void BrowsingContext::select_all()
{
auto* document = active_document();
if (!document)
return;
auto* body = document->body();
if (!body)
return;
auto selection = document->get_selection();
if (!selection)
return;
(void)selection->select_all_children(*document->body());
}
bool BrowsingContext::increment_cursor_position_offset()
{
if (!m_cursor_position->increment_offset())
return false;
reset_cursor_blink_cycle();
return true;
}
bool BrowsingContext::decrement_cursor_position_offset()
{
if (!m_cursor_position->decrement_offset())
return false;
reset_cursor_blink_cycle();
return true;
}
// https://html.spec.whatwg.org/multipage/interaction.html#currently-focused-area-of-a-top-level-browsing-context
JS::GCPtr<DOM::Node> BrowsingContext::currently_focused_area()
{
// 1. If topLevelBC does not have system focus, then return null.
if (!is_focused_context())
return nullptr;
// 2. Let candidate be topLevelBC's active document.
auto* candidate = active_document();
// 3. While candidate's focused area is a browsing context container with a non-null nested browsing context:
// set candidate to the active document of that browsing context container's nested browsing context.
while (candidate->focused_element()
&& is<HTML::NavigableContainer>(candidate->focused_element())
&& static_cast<HTML::NavigableContainer&>(*candidate->focused_element()).nested_browsing_context()) {
candidate = static_cast<HTML::NavigableContainer&>(*candidate->focused_element()).nested_browsing_context()->active_document();
}
// 4. If candidate's focused area is non-null, set candidate to candidate's focused area.
if (candidate->focused_element()) {
// NOTE: We return right away here instead of assigning to candidate,
// since that would require compromising type safety.
return candidate->focused_element();
}
// 5. Return candidate.
return candidate;
}
// https://html.spec.whatwg.org/#the-rules-for-choosing-a-browsing-context-given-a-browsing-context-name
BrowsingContext::ChosenBrowsingContext BrowsingContext::choose_a_browsing_context(StringView name, TokenizedFeature::NoOpener no_opener, ActivateTab activate_tab)
{
// The rules for choosing a browsing context, given a browsing context name name, a browsing context current, and
// a boolean noopener are as follows:
JS::GCPtr<AbstractBrowsingContext> matching_name_in_tree = nullptr;
top_level_browsing_context()->for_each_in_subtree([&](auto& context) {
if (context.name() == name) {
matching_name_in_tree = &context;
return IterationDecision::Break;
}
return IterationDecision::Continue;
});
// 1. Let chosen be null.
JS::GCPtr<AbstractBrowsingContext> chosen = nullptr;
// 2. Let windowType be "existing or none".
auto window_type = WindowType::ExistingOrNone;
// 3. Let sandboxingFlagSet be current's active document's active sandboxing flag set.
auto sandboxing_flag_set = active_document()->active_sandboxing_flag_set();
// 4. If name is the empty string or an ASCII case-insensitive match for "_self", then set chosen to current.
if (name.is_empty() || Infra::is_ascii_case_insensitive_match(name, "_self"sv)) {
chosen = this;
}
// 5. Otherwise, if name is an ASCII case-insensitive match for "_parent", set chosen to current's parent browsing
// context, if any, and current otherwise.
else if (Infra::is_ascii_case_insensitive_match(name, "_parent"sv)) {
if (auto parent = this->parent())
chosen = parent;
else
chosen = this;
}
// 6. Otherwise, if name is an ASCII case-insensitive match for "_top", set chosen to current's top-level browsing
// context, if any, and current otherwise.
else if (Infra::is_ascii_case_insensitive_match(name, "_top"sv)) {
chosen = top_level_browsing_context();
}
// 7. Otherwise, if name is not an ASCII case-insensitive match for "_blank", there exists a browsing context
// whose name is the same as name, current is familiar with that browsing context, and the user agent
// determines that the two browsing contexts are related enough that it is ok if they reach each other,
// set chosen to that browsing context. If there are multiple matching browsing contexts, the user agent
// should set chosen to one in some arbitrary consistent manner, such as the most recently opened, most
// recently focused, or more closely related.
else if (!Infra::is_ascii_case_insensitive_match(name, "_blank"sv) && matching_name_in_tree) {
chosen = matching_name_in_tree;
} else {
// 8. Otherwise, a new browsing context is being requested, and what happens depends on the user agent's
// configuration and abilities β it is determined by the rules given for the first applicable option from
// the following list:
// --> If current's active window does not have transient activation and the user agent has been configured to
// not show popups (i.e., the user agent has a "popup blocker" enabled)
VERIFY(m_page);
if (!active_window()->has_transient_activation() && m_page->should_block_pop_ups()) {
// FIXME: The user agent may inform the user that a popup has been blocked.
dbgln("Pop-up blocked!");
}
// --> If sandboxingFlagSet has the sandboxed auxiliary navigation browsing context flag set
else if (has_flag(sandboxing_flag_set, SandboxingFlagSet::SandboxedAuxiliaryNavigation)) {
// FIXME: The user agent may report to a developer console that a popup has been blocked.
dbgln("Pop-up blocked!");
}
// --> If the user agent has been configured such that in this instance it will create a new browsing context
else if (true) { // FIXME: When is this the case?
// 1. Set windowType to "new and unrestricted".
window_type = WindowType::NewAndUnrestricted;
// 2. If current's top-level browsing context's active document's cross-origin opener policy's value is
// "same-origin" or "same-origin-plus-COEP", then:
if (top_level_browsing_context()->active_document()->cross_origin_opener_policy().value == CrossOriginOpenerPolicyValue::SameOrigin || top_level_browsing_context()->active_document()->cross_origin_opener_policy().value == CrossOriginOpenerPolicyValue::SameOriginPlusCOEP) {
// 1. Let currentDocument be current's active document.
auto* current_document = top_level_browsing_context()->active_document();
// 2. If currentDocument's origin is not same origin with currentDocument's relevant settings object's
// top-level origin, then set noopener to true, name to "_blank", and windowType to "new with no opener".
if (!current_document->origin().is_same_origin(current_document->relevant_settings_object().top_level_origin)) {
no_opener = TokenizedFeature::NoOpener::Yes;
name = "_blank"sv;
window_type = WindowType::NewWithNoOpener;
}
}
// 3. If noopener is true, then set chosen to the result of creating a new top-level browsing context.
if (no_opener == TokenizedFeature::NoOpener::Yes) {
auto handle = m_page->client().page_did_request_new_tab(activate_tab);
chosen = RemoteBrowsingContext::create_a_new_remote_browsing_context(handle);
}
// 4. Otherwise:
else {
// 1. Set chosen to the result of creating a new auxiliary browsing context with current.
// FIXME: We have no concept of auxiliary browsing context
chosen = HTML::create_a_new_top_level_browsing_context_and_document(*m_page).release_value_but_fixme_should_propagate_errors().browsing_context;
// 2. If sandboxingFlagSet's sandboxed navigation browsing context flag is set, then current must be
// set as chosen's one permitted sandboxed navigator.
// FIXME: We have no concept of one permitted sandboxed navigator
}
// 5. If sandboxingFlagSet's sandbox propagates to auxiliary browsing contexts flag is set, then all the
// flags that are set in sandboxingFlagSet must be set in chosen's popup sandboxing flag set.
// FIXME: Our BrowsingContexts do not have SandboxingFlagSets yet, only documents do
// 6. If name is not an ASCII case-insensitive match for "_blank", then set chosen's name to name.
if (!Infra::is_ascii_case_insensitive_match(name, "_blank"sv))
chosen->set_name(String::from_utf8(name).release_value_but_fixme_should_propagate_errors());
}
// --> If the user agent has been configured such that in this instance t will reuse current
else if (false) { // FIXME: When is this the case?
// Set chosen to current.
chosen = *this;
}
// --> If the user agent has been configured such that in this instance it will not find a browsing context
else if (false) { // FIXME: When is this the case?
// Do nothing.
}
}
// 9. Return chosen and windowType.
return { chosen.ptr(), window_type };
}
// https://html.spec.whatwg.org/multipage/dom.html#still-on-its-initial-about:blank-document
bool BrowsingContext::still_on_its_initial_about_blank_document() const
{
// A browsing context browsingContext is still on its initial about:blank Document
// if browsingContext's session history's size is 1
// and browsingContext's session history[0]'s document's is initial about:blank is true.
return m_session_history.size() == 1
&& m_session_history[0]->document_state->document()
&& m_session_history[0]->document_state->document()->is_initial_about_blank();
}
DOM::Document const* BrowsingContext::active_document() const
{
auto* window = active_window();
if (!window)
return nullptr;
return &window->associated_document();
}
DOM::Document* BrowsingContext::active_document()
{
auto* window = active_window();
if (!window)
return nullptr;
return &window->associated_document();
}
// https://html.spec.whatwg.org/multipage/browsers.html#active-window
HTML::Window* BrowsingContext::active_window()
{
return m_window_proxy->window();
}
// https://html.spec.whatwg.org/multipage/browsers.html#active-window
HTML::Window const* BrowsingContext::active_window() const
{
return m_window_proxy->window();
}
HTML::WindowProxy* BrowsingContext::window_proxy()
{
return m_window_proxy.ptr();
}
HTML::WindowProxy const* BrowsingContext::window_proxy() const
{
return m_window_proxy.ptr();
}
void BrowsingContext::set_window_proxy(JS::GCPtr<WindowProxy> window_proxy)
{
m_window_proxy = move(window_proxy);
}
BrowsingContextGroup* BrowsingContext::group()
{
return m_group;
}
void BrowsingContext::set_group(BrowsingContextGroup* group)
{
m_group = group;
}
// https://html.spec.whatwg.org/multipage/browsers.html#bcg-remove
void BrowsingContext::remove()
{
// 1. Assert: browsingContext's group is non-null, because a browsing context only gets discarded once.
VERIFY(group());
// 2. Let group be browsingContext's group.
JS::NonnullGCPtr<BrowsingContextGroup> group = *this->group();
// 3. Set browsingContext's group to null.
set_group(nullptr);
// 4. Remove browsingContext from group's browsing context set.
group->browsing_context_set().remove(*this);
// 5. If group's browsing context set is empty, then remove group from the user agent's browsing context group set.
// NOTE: This is done by ~BrowsingContextGroup() when the refcount reaches 0.
}
// https://html.spec.whatwg.org/multipage/origin.html#one-permitted-sandboxed-navigator
BrowsingContext const* BrowsingContext::the_one_permitted_sandboxed_navigator() const
{
// FIXME: Implement this.
return nullptr;
}
void BrowsingContext::append_child(JS::NonnullGCPtr<BrowsingContext> child)
{
VERIFY(!child->m_parent);
if (m_last_child)
m_last_child->m_next_sibling = child;
child->m_previous_sibling = m_last_child;
child->m_parent = this;
m_last_child = child;
if (!m_first_child)
m_first_child = m_last_child;
}
void BrowsingContext::remove_child(JS::NonnullGCPtr<BrowsingContext> child)
{
VERIFY(child->m_parent.ptr() == this);
if (m_first_child == child)
m_first_child = child->m_next_sibling;
if (m_last_child == child)
m_last_child = child->m_previous_sibling;
if (child->m_next_sibling)
child->m_next_sibling->m_previous_sibling = child->m_previous_sibling;
if (child->m_previous_sibling)
child->m_previous_sibling->m_next_sibling = child->m_next_sibling;
child->m_next_sibling = nullptr;
child->m_previous_sibling = nullptr;
child->m_parent = nullptr;
}
JS::GCPtr<BrowsingContext> BrowsingContext::first_child() const
{
return m_first_child;
}
JS::GCPtr<BrowsingContext> BrowsingContext::next_sibling() const
{
return m_next_sibling;
}
bool BrowsingContext::is_ancestor_of(BrowsingContext const& other) const
{
for (auto ancestor = other.parent(); ancestor; ancestor = ancestor->parent()) {
if (ancestor == this)
return true;
}
return false;
}
// https://html.spec.whatwg.org/multipage/browsing-the-web.html#snapshotting-target-snapshot-params
SandboxingFlagSet determine_the_creation_sandboxing_flags(BrowsingContext const&, JS::GCPtr<DOM::Element>)
{
// FIXME: Populate this once we have the proper flag sets on BrowsingContext
return {};
}
}