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LibWeb: Start fleshing out Navigable::navigate()
Start implementation of https://html.spec.whatwg.org/multipage/browsing-the-web.html#navigate Co-authored-by: Andreas Kling <kling@serenityos.org>
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/*
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* Copyright (c) 2022, Andreas Kling <kling@serenityos.org>
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* Copyright (c) 2023, Aliaksandr Kalenik <kalenik.aliaksandr@gmail.com>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <LibWeb/Crypto/Crypto.h>
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#include <LibWeb/DOM/Document.h>
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#include <LibWeb/HTML/BrowsingContext.h>
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#include <LibWeb/HTML/DocumentState.h>
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#include <LibWeb/HTML/Navigable.h>
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#include <LibWeb/HTML/SessionHistoryEntry.h>
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#include <LibWeb/HTML/TraversableNavigable.h>
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#include <LibWeb/Platform/EventLoopPlugin.h>
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namespace Web::HTML {
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@ -130,4 +133,169 @@ JS::GCPtr<TraversableNavigable> Navigable::top_level_traversable()
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return verify_cast<TraversableNavigable>(navigable);
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}
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// To navigate a navigable navigable to a URL url using a Document sourceDocument,
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// with an optional POST resource, string, or null documentResource (default null),
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// an optional response-or-null response (default null), an optional boolean exceptionsEnabled (default false),
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// an optional history handling behavior historyHandling (default "push"),
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// an optional string cspNavigationType (default "other"),
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// and an optional referrer policy referrerPolicy (default the empty string):
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// https://html.spec.whatwg.org/multipage/browsing-the-web.html#navigate
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WebIDL::ExceptionOr<void> Navigable::navigate(
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AK::URL const& url,
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JS::NonnullGCPtr<DOM::Document> source_document,
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Variant<Empty, String, POSTResource> document_resource,
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JS::GCPtr<Fetch::Infrastructure::Response> response,
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bool exceptions_enabled,
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HistoryHandlingBehavior history_handling,
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String csp_navigation_type,
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ReferrerPolicy::ReferrerPolicy referrer_policy)
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{
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// FIXME: 1. Let sourceSnapshotParams be the result of snapshotting source snapshot params given sourceDocument.
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// 2. Let initiatorOriginSnapshot be sourceDocument's origin.
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auto initiator_origin_snapshot = source_document->origin();
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// FIXME: 3. If sourceDocument's node navigable is not allowed by sandboxing to navigate navigable given and sourceSnapshotParams, then:
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if constexpr (false) {
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// 1. If exceptionsEnabled is true, then throw a "SecurityError" DOMException.
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if (exceptions_enabled) {
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return WebIDL::SecurityError::create(*vm().current_realm(), "Source document's node navigable is not allowed to navigate"sv);
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}
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// 2 Return.
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return {};
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}
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// 4. Let navigationId be the result of generating a random UUID.
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String navigation_id = TRY_OR_THROW_OOM(vm(), Crypto::generate_random_uuid());
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// FIXME: 5. If the surrounding agent is equal to navigable's active document's relevant agent, then continue these steps.
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// Otherwise, queue a global task on the navigation and traversal task source given navigable's active window to continue these steps.
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// FIXME: 6. If navigable's active document's unload counter is greater than 0,
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// then invoke WebDriver BiDi navigation failed with a WebDriver BiDi navigation status whose id is navigationId,
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// status is "canceled", and url is url, and return.
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// 7. If any of the following are true:
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// - url equals navigable's active document's URL;
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// - url's scheme is "javascript"; or
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// - navigable's active document's is initial about:blank is true
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if (url.equals(active_document()->url())
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|| url.scheme() == "javascript"sv
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|| active_document()->is_initial_about_blank()) {
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// then set historyHandling to "replace".
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history_handling = HistoryHandlingBehavior::Replace;
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}
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// 8. If all of the following are true:
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// - documentResource is null;
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// - response is null;
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// - url equals navigable's active session history entry's URL with exclude fragments set to true; and
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// - url's fragment is non-null
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if (document_resource.has<Empty>()
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&& !response
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&& url.equals(active_session_history_entry()->url, AK::URL::ExcludeFragment::Yes)
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&& !url.fragment().is_null()) {
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// 1. Navigate to a fragment given navigable, url, historyHandling, and navigationId.
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TRY(navigate_to_a_fragment(url, history_handling, navigation_id));
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// 2. Return.
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return {};
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}
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// 9. If navigable's parent is non-null, then set navigable's is delaying load events to true.
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if (parent() != nullptr) {
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set_delaying_load_events(true);
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}
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// 10. Let targetBrowsingContext be navigable's active browsing context.
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[[maybe_unused]] auto target_browsing_context = active_browsing_context();
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// FIXME: 11. Let targetSnapshotParams be the result of snapshotting target snapshot params given navigable.
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// FIXME: 12. Invoke WebDriver BiDi navigation started with targetBrowsingContext, and a new WebDriver BiDi navigation status whose id is navigationId, url is url, and status is "pending".
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// 13. If navigable's ongoing navigation is "traversal", then:
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if (ongoing_navigation().has<Traversal>()) {
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// FIXME: 1. Invoke WebDriver BiDi navigation failed with targetBrowsingContext and a new WebDriver BiDi navigation status whose id is navigationId, status is "canceled", and url is url.
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// 2. Return.
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return {};
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}
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// 14. Set navigable's ongoing navigation to navigationId.
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m_ongoing_navigation = navigation_id;
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// 15. If url's scheme is "javascript", then:
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if (url.scheme() == "javascript"sv) {
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// 1. Queue a global task on the navigation and traversal task source given navigable's active window to navigate to a javascript: URL given navigable, url, historyHandling, initiatorOriginSnapshot, and cspNavigationType.
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queue_global_task(Task::Source::NavigationAndTraversal, *active_window(), [this, url, history_handling, initiator_origin_snapshot, csp_navigation_type] {
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(void)navigate_to_a_javascript_url(url, history_handling, initiator_origin_snapshot, csp_navigation_type);
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});
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// 2. Return.
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return {};
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}
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// 16. In parallel, run these steps:
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Platform::EventLoopPlugin::the().deferred_invoke([this, document_resource, url, navigation_id, referrer_policy, initiator_origin_snapshot, response] {
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// FIXME: 1. Let unloadPromptCanceled be the result of checking if unloading is user-canceled for navigable's active document's inclusive descendant navigables.
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// FIXME: 2. If unloadPromptCanceled is true, or navigable's ongoing navigation is no longer navigationId, then:
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// 3. Queue a global task on the navigation and traversal task source given navigable's active window to abort navigable's active document.
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queue_global_task(Task::Source::NavigationAndTraversal, *active_window(), [this] {
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VERIFY(active_document());
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active_document()->abort();
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});
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// 4. Let documentState be a new document state with
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// request referrer policy: referrerPolicy
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// initiator origin: initiatorOriginSnapshot
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// FIXME: resource: documentResource
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// navigable target name: navigable's target name
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JS::NonnullGCPtr<DocumentState> document_state = *heap().allocate_without_realm<DocumentState>();
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document_state->set_request_referrer_policy(referrer_policy);
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document_state->set_initiator_origin(initiator_origin_snapshot);
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document_state->set_navigable_target_name(target_name());
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// 5. If url is about:blank, then set documentState's origin to documentState's initiator origin.
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if (url == "about:blank"sv) {
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document_state->set_origin(document_state->initiator_origin());
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}
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// 6. Otherwise, if url is about:srcdoc, then set documentState's origin to navigable's parent's active document's origin.
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else if (url == "about:srcdoc"sv) {
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document_state->set_origin(parent()->active_document()->origin());
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}
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// 7. Let historyEntry be a new session history entry, with its URL set to url and its document state set to documentState.
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JS::NonnullGCPtr<SessionHistoryEntry> history_entry = *heap().allocate_without_realm<SessionHistoryEntry>();
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history_entry->url = url;
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history_entry->document_state = document_state;
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// FIXME: 8. Let navigationParams be null.
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// FIXME: 9. If response is non-null:
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if (response) {
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}
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});
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return {};
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}
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WebIDL::ExceptionOr<void> Navigable::navigate_to_a_fragment(AK::URL const&, HistoryHandlingBehavior, String navigation_id)
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{
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(void)navigation_id;
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TODO();
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}
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WebIDL::ExceptionOr<void> Navigable::navigate_to_a_javascript_url(AK::URL const&, HistoryHandlingBehavior, Origin const& initiator_origin, String csp_navigation_type)
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{
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(void)initiator_origin;
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(void)csp_navigation_type;
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TODO();
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}
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}
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