mirror of
https://github.com/LadybirdBrowser/ladybird
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ded42e649b
We were mimicking Firefox' behavior that whenever a programmatic change to an <input>'s or <textarea>'s selection happened, the new selection focus is brought into view by scrolling. Currently we run a layout update synchronously for that to make sure we have the fragment's correct dimensions, which caused a significant performance regression in Speedometer. Since this is non-standard behavior, let's mimic Chromium instead which does not scroll at all - only for direct user initiated input such as typing. Relevant issues: * https://github.com/whatwg/html/issues/6217 * https://bugzilla.mozilla.org/show_bug.cgi?id=232405 * https://issues.chromium.org/issues/41081857
94 lines
3.2 KiB
C++
94 lines
3.2 KiB
C++
/*
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* Copyright (c) 2021-2022, Andreas Kling <andreas@ladybird.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <LibWeb/Bindings/PlatformObject.h>
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#include <LibWeb/Export.h>
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#include <LibWeb/WebIDL/ExceptionOr.h>
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namespace Web::Selection {
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class WEB_API Selection final : public Bindings::PlatformObject {
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WEB_PLATFORM_OBJECT(Selection, Bindings::PlatformObject);
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GC_DECLARE_ALLOCATOR(Selection);
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public:
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[[nodiscard]] static GC::Ref<Selection> create(GC::Ref<JS::Realm>, GC::Ref<DOM::Document>);
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virtual ~Selection() override;
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enum class Direction : u8 {
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Forwards,
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Backwards,
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Directionless,
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};
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GC::Ptr<DOM::Node> anchor_node();
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unsigned anchor_offset();
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GC::Ptr<DOM::Node> focus_node();
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unsigned focus_offset() const;
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bool is_collapsed() const;
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unsigned range_count() const;
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String type() const;
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String direction() const;
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WebIDL::ExceptionOr<GC::Ptr<DOM::Range>> get_range_at(unsigned index);
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void add_range(GC::Ref<DOM::Range>);
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WebIDL::ExceptionOr<void> remove_range(GC::Ref<DOM::Range>);
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void remove_all_ranges();
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void empty();
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WebIDL::ExceptionOr<void> collapse(GC::Ptr<DOM::Node>, unsigned offset);
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WebIDL::ExceptionOr<void> set_position(GC::Ptr<DOM::Node>, unsigned offset);
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WebIDL::ExceptionOr<void> collapse_to_start();
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WebIDL::ExceptionOr<void> collapse_to_end();
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WebIDL::ExceptionOr<void> extend(GC::Ref<DOM::Node>, unsigned offset);
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WebIDL::ExceptionOr<void> set_base_and_extent(GC::Ref<DOM::Node> anchor_node, unsigned anchor_offset, GC::Ref<DOM::Node> focus_node, unsigned focus_offset);
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WebIDL::ExceptionOr<void> select_all_children(GC::Ref<DOM::Node>);
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WebIDL::ExceptionOr<void> modify(Optional<String> alter, Optional<String> direction, Optional<String> granularity);
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WebIDL::ExceptionOr<void>
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delete_from_document();
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bool contains_node(GC::Ref<DOM::Node>, bool allow_partial_containment) const;
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Utf16String to_string() const;
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// Non-standard convenience accessor for the selection's range.
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GC::Ptr<DOM::Range> range() const;
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Optional<Utf16String> try_form_control_selected_text_for_stringifier() const;
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// Non-standard accessor for the selection's document.
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GC::Ref<DOM::Document> document() const;
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// Non-standard
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GC::Ptr<DOM::Position> cursor_position() const;
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// Non-standard
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void scroll_focus_into_view();
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void move_offset_to_next_character(bool collapse_selection);
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void move_offset_to_previous_character(bool collapse_selection);
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void move_offset_to_next_word(bool collapse_selection);
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void move_offset_to_previous_word(bool collapse_selection);
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void move_offset_to_next_line(bool collapse_selection);
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void move_offset_to_previous_line(bool collapse_selection);
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private:
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Selection(GC::Ref<JS::Realm>, GC::Ref<DOM::Document>);
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[[nodiscard]] bool is_empty() const;
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virtual void initialize(JS::Realm&) override;
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virtual void visit_edges(Cell::Visitor&) override;
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void set_range(GC::Ptr<DOM::Range>);
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// https://w3c.github.io/selection-api/#dfn-empty
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GC::Ptr<DOM::Range> m_range;
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GC::Ref<DOM::Document> m_document;
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Direction m_direction { Direction::Directionless };
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};
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}
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