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/*
* Copyright (c) 2018-2021, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/Function.h>
#include <AK/Noncopyable.h>
#include <AK/RefPtr.h>
#include <AK/WeakPtr.h>
#include <LibCore/Timer.h>
#include <LibGfx/Bitmap.h>
#include <LibGfx/Rect.h>
#include <LibGfx/Size.h>
#include <LibWeb/DOM/Position.h>
#include <LibWeb/Loader/FrameLoader.h>
#include <LibWeb/Page/EventHandler.h>
#include <LibWeb/TreeNode.h>
namespace Web {
class BrowsingContext : public TreeNode<BrowsingContext> {
public:
static NonnullRefPtr<BrowsingContext> create_nested(DOM::Element& host_element, BrowsingContext& top_level_browsing_context) { return adopt_ref(*new BrowsingContext(host_element, top_level_browsing_context)); }
static NonnullRefPtr<BrowsingContext> create(Page& page) { return adopt_ref(*new BrowsingContext(page)); }
~BrowsingContext();
class ViewportClient {
public:
virtual ~ViewportClient() { }
virtual void frame_did_set_viewport_rect(const Gfx::IntRect&) = 0;
};
void register_viewport_client(ViewportClient&);
void unregister_viewport_client(ViewportClient&);
bool is_top_level() const { return this == &m_top_level_browsing_context; }
bool is_focused_context() const;
const DOM::Document* document() const { return m_document; }
DOM::Document* document() { return m_document; }
void set_document(DOM::Document*);
Page* page() { return m_page; }
const Page* page() const { return m_page; }
const Gfx::IntSize& size() const { return m_size; }
void set_size(const Gfx::IntSize&);
void set_needs_display(const Gfx::IntRect&);
void set_viewport_scroll_offset(const Gfx::IntPoint&);
Gfx::IntRect viewport_rect() const { return { m_viewport_scroll_offset, m_size }; }
void set_viewport_rect(const Gfx::IntRect&);
FrameLoader& loader() { return m_loader; }
const FrameLoader& loader() const { return m_loader; }
EventHandler& event_handler() { return m_event_handler; }
const EventHandler& event_handler() const { return m_event_handler; }
void scroll_to_anchor(const String&);
BrowsingContext& top_level_browsing_context() { return m_top_level_browsing_context; }
BrowsingContext const& top_level_browsing_context() const { return m_top_level_browsing_context; }
DOM::Element* host_element() { return m_host_element; }
const DOM::Element* host_element() const { return m_host_element; }
Gfx::IntPoint to_top_level_position(const Gfx::IntPoint&);
Gfx::IntRect to_top_level_rect(const Gfx::IntRect&);
const DOM::Position& cursor_position() const { return m_cursor_position; }
void set_cursor_position(DOM::Position);
bool increment_cursor_position_offset();
bool decrement_cursor_position_offset();
bool cursor_blink_state() const { return m_cursor_blink_state; }
String selected_text() const;
void did_edit(Badge<EditEventHandler>);
void register_frame_nesting(URL const&);
bool is_frame_nesting_allowed(URL const&) const;
void set_frame_nesting_levels(const HashMap<URL, size_t> frame_nesting_levels) { m_frame_nesting_levels = move(frame_nesting_levels); };
HashMap<URL, size_t> const& frame_nesting_levels() const { return m_frame_nesting_levels; }
private:
explicit BrowsingContext(DOM::Element& host_element, BrowsingContext& top_level_browsing_context);
explicit BrowsingContext(Page&);
void reset_cursor_blink_cycle();
void setup();
WeakPtr<Page> m_page;
BrowsingContext& m_top_level_browsing_context;
FrameLoader m_loader;
EventHandler m_event_handler;
WeakPtr<DOM::Element> m_host_element;
RefPtr<DOM::Document> m_document;
Gfx::IntSize m_size;
Gfx::IntPoint m_viewport_scroll_offset;
DOM::Position m_cursor_position;
RefPtr<Core::Timer> m_cursor_blink_timer;
bool m_cursor_blink_state { false };
HashTable<ViewportClient*> m_viewport_clients;
HashMap<URL, size_t> m_frame_nesting_levels;
};
}
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