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LibWeb: Add missing property and methods for history object
We provide `length` property and `go` / `back` / `forward` methods implementation here.
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parent
2b9cf5a7b4
commit
2029c98fa7
Notes:
sideshowbarker
2024-07-17 05:48:45 +09:00
Author: https://github.com/leeight Commit: https://github.com/SerenityOS/serenity/commit/2029c98fa7 Pull-request: https://github.com/SerenityOS/serenity/pull/15567 Reviewed-by: https://github.com/ADKaster Reviewed-by: https://github.com/linusg
@ -126,6 +126,7 @@ public:
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Vector<SessionHistoryEntry>& session_history() { return m_session_history; }
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Vector<SessionHistoryEntry> const& session_history() const { return m_session_history; }
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size_t session_history_index() const { return *m_session_history_index; }
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// https://html.spec.whatwg.org/multipage/dom.html#still-on-its-initial-about:blank-document
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bool still_on_its_initial_about_blank_document() const;
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@ -44,6 +44,66 @@ WebIDL::ExceptionOr<void> History::replace_state(JS::Value data, String const&,
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return shared_history_push_replace_state(data, url, IsPush::No);
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}
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// https://html.spec.whatwg.org/multipage/history.html#dom-history-length
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WebIDL::ExceptionOr<u64> History::length() const
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{
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// 1. If this's associated Document is not fully active, then throw a "SecurityError" DOMException.
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if (!m_associated_document->is_fully_active())
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return WebIDL::SecurityError::create(realm(), "Cannot perform length on a document that isn't fully active."sv);
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// 2. Return the number of entries in the top-level browsing context's joint session history.
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auto const* browsing_context = m_associated_document->browsing_context();
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// FIXME: We don't have the concept of "joint session history", this is an ad-hoc implementation.
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// See: https://html.spec.whatwg.org/multipage/history.html#joint-session-history
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return browsing_context->session_history().size();
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}
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// https://html.spec.whatwg.org/multipage/history.html#dom-history-go
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WebIDL::ExceptionOr<void> History::go(long delta = 0)
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{
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// 1. Let document be this's associated Document.
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// 2. If document is not fully active, then throw a "SecurityError" DOMException.
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if (!m_associated_document->is_fully_active())
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return WebIDL::SecurityError::create(realm(), "Cannot perform go on a document that isn't fully active."sv);
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// 3. If delta is 0, then act as if the location.reload() method was called, and return.
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auto* browsing_context = m_associated_document->browsing_context();
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auto current_entry_index = browsing_context->session_history_index();
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auto next_entry_index = current_entry_index + delta;
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auto const& sessions = browsing_context->session_history();
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if (next_entry_index < sessions.size()) {
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auto const& next_entry = sessions.at(next_entry_index);
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// FIXME: 4. Traverse the history by a delta with delta and document's browsing context.
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browsing_context->loader().load(next_entry.url, FrameLoader::Type::Reload);
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}
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return {};
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}
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// https://html.spec.whatwg.org/multipage/history.html#dom-history-back
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WebIDL::ExceptionOr<void> History::back()
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{
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// 1. Let document be this's associated Document.
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// 2. If document is not fully active, then throw a "SecurityError" DOMException.
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// NOTE: We already did this check in `go` method, so skip the fully active check here.
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// 3. Traverse the history by a delta with −1 and document's browsing context.
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return go(-1);
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}
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// https://html.spec.whatwg.org/multipage/history.html#dom-history-forward
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WebIDL::ExceptionOr<void> History::forward()
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{
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// 1. Let document be this's associated Document.
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// 2. If document is not fully active, then throw a "SecurityError" DOMException.
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// NOTE: We already did this check in `go` method, so skip the fully active check here.
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// 3. Traverse the history by a delta with +1 and document's browsing context.
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return go(1);
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}
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// https://html.spec.whatwg.org/multipage/history.html#shared-history-push/replace-state-steps
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WebIDL::ExceptionOr<void> History::shared_history_push_replace_state(JS::Value, String const&, IsPush)
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{
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@ -51,7 +111,7 @@ WebIDL::ExceptionOr<void> History::shared_history_push_replace_state(JS::Value,
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// 2. If document is not fully active, then throw a "SecurityError" DOMException.
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if (!m_associated_document->is_fully_active())
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return WebIDL::SecurityError::create(realm(), "Cannot perform pushState or replaceState on a document that isn't fully active.");
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return WebIDL::SecurityError::create(realm(), "Cannot perform pushState or replaceState on a document that isn't fully active."sv);
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// 3. Optionally, return. (For example, the user agent might disallow calls to these methods that are invoked on a timer,
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// or from event listeners that are not triggered in response to a clear user action, or that are invoked in rapid succession.)
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@ -22,6 +22,10 @@ public:
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WebIDL::ExceptionOr<void> push_state(JS::Value data, String const& unused, String const& url);
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WebIDL::ExceptionOr<void> replace_state(JS::Value data, String const& unused, String const& url);
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WebIDL::ExceptionOr<void> go(long delta);
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WebIDL::ExceptionOr<void> back();
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WebIDL::ExceptionOr<void> forward();
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WebIDL::ExceptionOr<u64> length() const;
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private:
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History(JS::Realm&, DOM::Document&);
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@ -1,5 +1,12 @@
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// https://html.spec.whatwg.org/multipage/history.html#the-history-interface
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[Exposed=Window]
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interface History {
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readonly attribute unsigned long length;
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// FIXME: attribute ScrollRestoration scrollRestoration;
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// FIXME: readonly attribute any state;
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undefined go(optional long delta = 0);
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undefined back();
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undefined forward();
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undefined pushState(any data, DOMString unused, optional USVString? url = null);
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undefined replaceState(any data, DOMString unused, optional USVString? url = null);
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};
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