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LibWeb: Move viewport subscriptions from BrowsingContext to Document

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With this change, elements that want to receive viewport rect updates
will need to register on document instead of the browsing context.

This change solves the problem where a browsing context for a document
is guaranteed to exist only while the document is active so browsing
context might not exit by the time DOM node that want to register is
constructed.

This is a part of preparation work before switching to navigables where
this issue becomes more visible.
This commit is contained in:
Aliaksandr Kalenik 2023-08-23 18:58:42 +02:00 • committed by Andreas Kling
parent 48e9097aa4
commit 5ff7448fee
10 changed files with 66 additions and 61 deletions
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12
Userland/Libraries/LibWeb/HTML/BrowsingContext.h
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@ -118,14 +118,6 @@ public:
return IterationDecision::Continue;
}
class ViewportClient {
public:
virtual ~ViewportClient() = default;
virtual void browsing_context_did_set_viewport_rect(CSSPixelRect const&) = 0;
};
void register_viewport_client(ViewportClient&);
void unregister_viewport_client(ViewportClient&);
bool is_top_level() const;
bool is_focused_context() const;
@ -277,8 +269,6 @@ public:
virtual String const& window_handle() const override { return m_window_handle; }
virtual void set_window_handle(String handle) override { m_window_handle = move(handle); }
void inform_all_viewport_clients_about_the_current_viewport_rect();
private:
explicit BrowsingContext(Page&, HTML::NavigableContainer*);
@ -324,8 +314,6 @@ private:
RefPtr<Core::Timer> m_cursor_blink_timer;
bool m_cursor_blink_state { false };
HashTable<ViewportClient*> m_viewport_clients;
HashMap<AK::URL, size_t> m_frame_nesting_levels;
DeprecatedString m_name;