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LibWeb: Implement a large chunk of the Selection API

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This patch implements enough of the Selection API specification
that we stop hitting unimplemented functions when loading Twitter.
This commit is contained in:
Andreas Kling 2022-10-11 16:54:42 +02:00
parent 317ab7a04b
commit e77798f5fd
3 changed files with 270 additions and 54 deletions
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48
Userland/Libraries/LibWeb/Selection/Selection.h
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@ -1,5 +1,5 @@
/*
* Copyright (c) 2021, Andreas Kling <kling@serenityos.org>
* Copyright (c) 2021-2022, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
@ -7,6 +7,7 @@
#pragma once
#include <LibWeb/Bindings/PlatformObject.h>
#include <LibWeb/WebIDL/ExceptionOr.h>
namespace Web::Selection {
@ -14,36 +15,53 @@ class Selection final : public Bindings::PlatformObject {
WEB_PLATFORM_OBJECT(Selection, Bindings::PlatformObject);
public:
static JS::NonnullGCPtr<Selection> create(JS::Realm&);
static JS::NonnullGCPtr<Selection> create(JS::NonnullGCPtr<JS::Realm>, JS::NonnullGCPtr<DOM::Document>);
virtual ~Selection() override;
DOM::Node* anchor_node();
enum class Direction {
Forwards,
Backwards,
Directionless,
};
JS::GCPtr<DOM::Node> anchor_node();
unsigned anchor_offset();
DOM::Node* focus_node();
JS::GCPtr<DOM::Node> focus_node();
unsigned focus_offset() const;
bool is_collapsed() const;
unsigned range_count() const;
String type() const;
DOM::Range* get_range_at(unsigned index);
void add_range(DOM::Range&);
void remove_range(DOM::Range&);
WebIDL::ExceptionOr<JS::GCPtr<DOM::Range>> get_range_at(unsigned index);
void add_range(JS::NonnullGCPtr<DOM::Range>);
WebIDL::ExceptionOr<void> remove_range(JS::NonnullGCPtr<DOM::Range>);
void remove_all_ranges();
void empty();
void collapse(DOM::Node*, unsigned offset);
void set_position(DOM::Node*, unsigned offset);
void collapse(JS::GCPtr<DOM::Node>, unsigned offset);
void set_position(JS::GCPtr<DOM::Node>, unsigned offset);
void collapse_to_start();
void collapse_to_end();
void extend(DOM::Node&, unsigned offset);
void set_base_and_extent(DOM::Node& anchor_node, unsigned anchor_offset, DOM::Node& focus_node, unsigned focus_offset);
void select_all_children(DOM::Node&);
void delete_from_document();
bool contains_node(DOM::Node&, bool allow_partial_containment) const;
WebIDL::ExceptionOr<void> extend(JS::NonnullGCPtr<DOM::Node>, unsigned offset);
void set_base_and_extent(JS::NonnullGCPtr<DOM::Node> anchor_node, unsigned anchor_offset, JS::NonnullGCPtr<DOM::Node> focus_node, unsigned focus_offset);
WebIDL::ExceptionOr<void> select_all_children(JS::NonnullGCPtr<DOM::Node>);
WebIDL::ExceptionOr<void>
delete_from_document();
bool contains_node(JS::NonnullGCPtr<DOM::Node>, bool allow_partial_containment) const;
String to_string() const;
private:
explicit Selection(JS::Realm&);
Selection(JS::NonnullGCPtr<JS::Realm>, JS::NonnullGCPtr<DOM::Document>);
[[nodiscard]] bool is_empty() const;
virtual void visit_edges(Cell::Visitor&) override;
// https://w3c.github.io/selection-api/#dfn-empty
JS::GCPtr<DOM::Range> m_range;
JS::NonnullGCPtr<DOM::Document> m_document;
Direction m_direction { Direction::Directionless };
};
}