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LibWeb: Move event handling & cursor from BrowsingContext to Navigable
This was a long standing FIXME since the introduction of navigables.
This commit is contained in:
Andreas Kling
parent
9cd4a65071
commit
0ebfc0a4c4
Notes:
sideshowbarker
2024-07-17 01:46:43 +09:00
Author: https://github.com/awesomekling
Commit: 0ebfc0a4c4
Pull-request: https://github.com/SerenityOS/serenity/pull/24123
26 changed files with 364 additions and 360 deletions
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@ -276,22 +276,7 @@ WebIDL::ExceptionOr<BrowsingContext::BrowsingContextAndDocument> BrowsingContext
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BrowsingContext::BrowsingContext(JS::NonnullGCPtr<Page> page)
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: m_page(page)
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, m_event_handler({}, *this)
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{
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m_cursor_blink_timer = Core::Timer::create_repeating(500, [this] {
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if (!is_focused_context())
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return;
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if (!m_cursor_position)
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return;
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auto node = m_cursor_position->node();
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if (!node)
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return;
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node->document().update_layout();
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if (node->paintable()) {
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m_cursor_blink_state = !m_cursor_blink_state;
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node->paintable()->set_needs_display();
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}
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});
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}
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BrowsingContext::~BrowsingContext() = default;
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@ -301,7 +286,6 @@ void BrowsingContext::visit_edges(Cell::Visitor& visitor)
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Base::visit_edges(visitor);
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visitor.visit(m_page);
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visitor.visit(m_cursor_position);
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visitor.visit(m_window_proxy);
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visitor.visit(m_group);
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visitor.visit(m_parent);
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@ -310,8 +294,6 @@ void BrowsingContext::visit_edges(Cell::Visitor& visitor)
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visitor.visit(m_next_sibling);
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visitor.visit(m_previous_sibling);
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visitor.visit(m_opener_browsing_context);
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m_event_handler.visit_edges(visitor);
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}
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// https://html.spec.whatwg.org/multipage/document-sequences.html#bc-traversable
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@ -324,25 +306,6 @@ JS::NonnullGCPtr<HTML::TraversableNavigable> BrowsingContext::top_level_traversa
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return *traversable;
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}
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void BrowsingContext::did_edit(Badge<EditEventHandler>)
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{
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reset_cursor_blink_cycle();
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if (m_cursor_position && is<DOM::Text>(*m_cursor_position->node())) {
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auto& text_node = static_cast<DOM::Text&>(*m_cursor_position->node());
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if (auto text_node_owner = text_node.editable_text_node_owner())
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text_node_owner->did_edit_text_node({});
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}
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}
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void BrowsingContext::reset_cursor_blink_cycle()
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{
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m_cursor_blink_state = true;
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m_cursor_blink_timer->restart();
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if (m_cursor_position && m_cursor_position->node()->paintable())
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m_cursor_position->node()->paintable()->set_needs_display();
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}
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// https://html.spec.whatwg.org/multipage/browsers.html#top-level-browsing-context
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bool BrowsingContext::is_top_level() const
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{
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@ -350,11 +313,6 @@ bool BrowsingContext::is_top_level() const
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return !parent();
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}
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bool BrowsingContext::is_focused_context() const
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{
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return &m_page->focused_context() == this;
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}
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JS::GCPtr<BrowsingContext> BrowsingContext::top_level_browsing_context() const
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{
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auto const* start = this;
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@ -376,127 +334,6 @@ JS::GCPtr<BrowsingContext> BrowsingContext::top_level_browsing_context() const
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return navigable->active_browsing_context();
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}
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void BrowsingContext::set_cursor_position(JS::NonnullGCPtr<DOM::Position> position)
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{
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if (m_cursor_position && m_cursor_position->equals(position))
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return;
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if (m_cursor_position && m_cursor_position->node()->paintable())
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m_cursor_position->node()->paintable()->set_needs_display();
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m_cursor_position = position;
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if (m_cursor_position && m_cursor_position->node()->paintable())
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m_cursor_position->node()->paintable()->set_needs_display();
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reset_cursor_blink_cycle();
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}
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static String visible_text_in_range(DOM::Range const& range)
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{
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// NOTE: This is an adaption of Range stringification, but we skip over DOM nodes that don't have a corresponding layout node.
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StringBuilder builder;
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if (range.start_container() == range.end_container() && is<DOM::Text>(*range.start_container())) {
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if (!range.start_container()->layout_node())
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return String {};
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return MUST(static_cast<DOM::Text const&>(*range.start_container()).data().substring_from_byte_offset(range.start_offset(), range.end_offset() - range.start_offset()));
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}
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if (is<DOM::Text>(*range.start_container()) && range.start_container()->layout_node())
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builder.append(static_cast<DOM::Text const&>(*range.start_container()).data().bytes_as_string_view().substring_view(range.start_offset()));
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for (DOM::Node const* node = range.start_container(); node != range.end_container()->next_sibling(); node = node->next_in_pre_order()) {
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if (is<DOM::Text>(*node) && range.contains_node(*node) && node->layout_node())
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builder.append(static_cast<DOM::Text const&>(*node).data());
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}
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if (is<DOM::Text>(*range.end_container()) && range.end_container()->layout_node())
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builder.append(static_cast<DOM::Text const&>(*range.end_container()).data().bytes_as_string_view().substring_view(0, range.end_offset()));
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return MUST(builder.to_string());
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}
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String BrowsingContext::selected_text() const
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{
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auto const* document = active_document();
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if (!document)
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return String {};
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auto selection = const_cast<DOM::Document&>(*document).get_selection();
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auto range = selection->range();
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if (!range)
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return String {};
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return visible_text_in_range(*range);
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}
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void BrowsingContext::select_all()
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{
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auto* document = active_document();
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if (!document)
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return;
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auto* body = document->body();
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if (!body)
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return;
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auto selection = document->get_selection();
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if (!selection)
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return;
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(void)selection->select_all_children(*document->body());
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}
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void BrowsingContext::paste(String const& text)
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{
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auto* document = active_document();
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if (!document)
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return;
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m_event_handler.handle_paste(text);
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}
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bool BrowsingContext::increment_cursor_position_offset()
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{
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if (!m_cursor_position->increment_offset())
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return false;
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reset_cursor_blink_cycle();
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return true;
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}
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bool BrowsingContext::decrement_cursor_position_offset()
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{
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if (!m_cursor_position->decrement_offset())
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return false;
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reset_cursor_blink_cycle();
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return true;
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}
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// https://html.spec.whatwg.org/multipage/interaction.html#currently-focused-area-of-a-top-level-browsing-context
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JS::GCPtr<DOM::Node> BrowsingContext::currently_focused_area()
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{
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// 1. If topLevelBC does not have system focus, then return null.
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if (!is_focused_context())
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return nullptr;
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// 2. Let candidate be topLevelBC's active document.
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auto* candidate = active_document();
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// 3. While candidate's focused area is a browsing context container with a non-null nested browsing context:
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// set candidate to the active document of that browsing context container's nested browsing context.
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while (candidate->focused_element()
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&& is<HTML::NavigableContainer>(candidate->focused_element())
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&& static_cast<HTML::NavigableContainer&>(*candidate->focused_element()).nested_browsing_context()) {
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candidate = static_cast<HTML::NavigableContainer&>(*candidate->focused_element()).nested_browsing_context()->active_document();
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}
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// 4. If candidate's focused area is non-null, set candidate to candidate's focused area.
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if (candidate->focused_element()) {
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// NOTE: We return right away here instead of assigning to candidate,
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// since that would require compromising type safety.
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return candidate->focused_element();
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}
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// 5. Return candidate.
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return candidate;
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}
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DOM::Document const* BrowsingContext::active_document() const
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{
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auto* window = active_window();
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