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https://github.com/LadybirdBrowser/ladybird.git
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d5be18617e
We hold a raw pointer to the mouse selection target, which is a mixin- style class inherited only by JS::Cell classes. By not visiting this object, we sometime had a dangling reference to it after it had been garbage collected.
252 lines
15 KiB
C++
252 lines
15 KiB
C++
/*
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* Copyright (c) 2021, Andreas Kling <andreas@ladybird.org>
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* Copyright (c) 2024, Jelle Raaijmakers <jelle@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 <AK/String.h>
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#include <AK/WeakPtr.h>
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#include <LibWeb/Bindings/HTMLFormElementPrototype.h>
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#include <LibWeb/DOM/InputEventsTarget.h>
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#include <LibWeb/Forward.h>
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#include <LibWeb/WebIDL/Types.h>
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namespace Web::HTML {
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// Form-associated elements should invoke this macro to inject overridden FormAssociatedElement and HTMLElement
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// methods as needed. If your class wished to override an HTMLElement method that is overridden here, use the
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// following methods instead:
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//
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// HTMLElement::inserted() -> Use form_associated_element_was_inserted()
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// HTMLElement::removed_from() -> Use form_associated_element_was_removed()
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//
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#define FORM_ASSOCIATED_ELEMENT(ElementBaseClass, ElementClass) \
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private: \
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virtual HTMLElement& form_associated_element_to_html_element() override \
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{ \
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static_assert(IsBaseOf<HTMLElement, ElementClass>); \
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return *this; \
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} \
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\
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virtual void inserted() override \
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{ \
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ElementBaseClass::inserted(); \
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form_node_was_inserted(); \
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form_associated_element_was_inserted(); \
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} \
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\
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virtual void removed_from(DOM::Node* old_parent, DOM::Node& old_root) override \
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{ \
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ElementBaseClass::removed_from(old_parent, old_root); \
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form_node_was_removed(); \
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form_associated_element_was_removed(old_parent); \
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} \
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\
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virtual void attribute_changed(FlyString const& name, Optional<String> const& old_value, Optional<String> const& value, Optional<FlyString> const& namespace_) override \
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{ \
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ElementBaseClass::attribute_changed(name, old_value, value, namespace_); \
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form_node_attribute_changed(name, value); \
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form_associated_element_attribute_changed(name, value, namespace_); \
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}
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// https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#selection-direction
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enum class SelectionDirection {
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Forward,
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Backward,
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None,
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};
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class FormAssociatedElement {
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public:
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HTMLFormElement* form() { return m_form; }
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HTMLFormElement const* form() const { return m_form; }
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void set_form(HTMLFormElement*);
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void element_id_changed(Badge<DOM::Document>);
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void element_with_id_was_added_or_removed(Badge<DOM::Document>);
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bool enabled() const;
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void set_parser_inserted(Badge<HTMLParser>);
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// https://html.spec.whatwg.org/multipage/forms.html#category-listed
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virtual bool is_listed() const { return false; }
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// https://html.spec.whatwg.org/multipage/forms.html#category-submit
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virtual bool is_submittable() const { return false; }
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// https://html.spec.whatwg.org/multipage/forms.html#category-reset
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virtual bool is_resettable() const { return false; }
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// https://html.spec.whatwg.org/multipage/forms.html#category-autocapitalize
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virtual bool is_auto_capitalize_inheriting() const { return false; }
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// https://html.spec.whatwg.org/multipage/forms.html#concept-button
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virtual bool is_button() const { return false; }
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// https://html.spec.whatwg.org/multipage/forms.html#concept-submit-button
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virtual bool is_submit_button() const { return false; }
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// https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#check-validity-steps
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bool check_validity_steps();
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// https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#candidate-for-constraint-validation
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bool is_candidate_for_constraint_validation() const;
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// https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#concept-fv-valid
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bool satisfies_its_constraints() const;
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// https://html.spec.whatwg.org/multipage/form-control-infrastructure/#definitions
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virtual bool suffering_from_being_missing() const { return false; }
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virtual bool suffering_from_a_type_mismatch() const { return false; }
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virtual bool suffering_from_a_pattern_mismatch() const { return false; }
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bool suffering_from_being_too_long() const;
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bool suffering_from_being_too_short() const;
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virtual bool suffering_from_an_underflow() const { return false; }
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virtual bool suffering_from_an_overflow() const { return false; }
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virtual bool suffering_from_a_step_mismatch() const { return false; }
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virtual bool suffering_from_bad_input() const { return false; }
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bool suffering_from_a_custom_error() const;
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virtual String value() const { return String {}; }
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virtual HTMLElement& form_associated_element_to_html_element() = 0;
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HTMLElement const& form_associated_element_to_html_element() const { return const_cast<FormAssociatedElement&>(*this).form_associated_element_to_html_element(); }
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// https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#concept-form-reset-control
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virtual void reset_algorithm() { }
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virtual void clear_algorithm();
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String form_action() const;
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WebIDL::ExceptionOr<void> set_form_action(String const&);
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// https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#dom-cva-validity
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GC::Ref<ValidityState const> validity() const;
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// https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#dom-cva-setcustomvalidity
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void set_custom_validity(String& error);
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protected:
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FormAssociatedElement() = default;
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virtual ~FormAssociatedElement() = default;
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virtual void form_associated_element_was_inserted() { }
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virtual void form_associated_element_was_removed(DOM::Node*) { }
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virtual void form_associated_element_attribute_changed(FlyString const&, Optional<String> const&, Optional<FlyString> const&) { }
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void form_node_was_inserted();
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void form_node_was_removed();
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void form_node_attribute_changed(FlyString const&, Optional<String> const&);
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private:
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void reset_form_owner();
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WeakPtr<HTMLFormElement> m_form;
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// https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#parser-inserted-flag
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bool m_parser_inserted { false };
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// https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#custom-validity-error-message
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String m_custom_validity_error_message;
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};
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enum class SelectionSource {
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UI,
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DOM,
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};
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class FormAssociatedTextControlElement
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: public FormAssociatedElement
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, public InputEventsTarget {
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public:
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// https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#concept-textarea/input-relevant-value
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virtual String relevant_value() = 0;
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virtual WebIDL::ExceptionOr<void> set_relevant_value(String const&) = 0;
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virtual void set_dirty_value_flag(bool flag) = 0;
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// https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#dom-textarea/input-select
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WebIDL::ExceptionOr<void> select();
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// https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#dom-textarea/input-selectionstart
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Optional<WebIDL::UnsignedLong> selection_start_binding() const;
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WebIDL::ExceptionOr<void> set_selection_start_binding(Optional<WebIDL::UnsignedLong> const&);
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WebIDL::UnsignedLong selection_start() const;
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// https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#dom-textarea/input-selectionend
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Optional<WebIDL::UnsignedLong> selection_end_binding() const;
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WebIDL::ExceptionOr<void> set_selection_end_binding(Optional<WebIDL::UnsignedLong> const&);
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WebIDL::UnsignedLong selection_end() const;
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// https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#dom-textarea/input-selectiondirection
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Optional<String> selection_direction() const;
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void set_selection_direction(Optional<String> direction);
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WebIDL::ExceptionOr<void> set_selection_direction_binding(Optional<String> direction);
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SelectionDirection selection_direction_state() const { return m_selection_direction; }
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// https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#dom-textarea/input-setrangetext
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WebIDL::ExceptionOr<void> set_range_text_binding(String const& replacement);
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WebIDL::ExceptionOr<void> set_range_text_binding(String const& replacement, WebIDL::UnsignedLong start, WebIDL::UnsignedLong end, Bindings::SelectionMode = Bindings::SelectionMode::Preserve);
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WebIDL::ExceptionOr<void> set_range_text(String const& replacement, WebIDL::UnsignedLong start, WebIDL::UnsignedLong end, Bindings::SelectionMode = Bindings::SelectionMode::Preserve);
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// https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#dom-textarea/input-setselectionrange
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void set_the_selection_range(Optional<WebIDL::UnsignedLong> start, Optional<WebIDL::UnsignedLong> end, SelectionDirection direction = SelectionDirection::None, SelectionSource source = SelectionSource::DOM);
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// https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#dom-textarea/input-setselectionrange
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WebIDL::ExceptionOr<void> set_selection_range(Optional<WebIDL::UnsignedLong> start, Optional<WebIDL::UnsignedLong> end, Optional<String> direction);
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// https://w3c.github.io/selection-api/#dfn-has-scheduled-selectionchange-event
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bool has_scheduled_selectionchange_event() const { return m_has_scheduled_selectionchange_event; }
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void set_scheduled_selectionchange_event(bool value) { m_has_scheduled_selectionchange_event = value; }
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bool is_mutable() const { return m_is_mutable; }
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void set_is_mutable(bool is_mutable) { m_is_mutable = is_mutable; }
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virtual void did_edit_text_node() = 0;
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virtual GC::Ptr<DOM::Text> form_associated_element_to_text_node() = 0;
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virtual GC::Ptr<DOM::Text const> form_associated_element_to_text_node() const { return const_cast<FormAssociatedTextControlElement&>(*this).form_associated_element_to_text_node(); }
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virtual void handle_insert(String const&) override;
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virtual void handle_delete(DeleteDirection) override;
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virtual void handle_return_key() override;
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virtual void select_all() override;
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virtual void set_selection_anchor(GC::Ref<DOM::Node>, size_t offset) override;
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virtual void set_selection_focus(GC::Ref<DOM::Node>, size_t offset) override;
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virtual void move_cursor_to_start(CollapseSelection) override;
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virtual void move_cursor_to_end(CollapseSelection) override;
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virtual void increment_cursor_position_offset(CollapseSelection) override;
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virtual void decrement_cursor_position_offset(CollapseSelection) override;
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virtual void increment_cursor_position_to_next_word(CollapseSelection) override;
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virtual void decrement_cursor_position_to_previous_word(CollapseSelection) override;
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GC::Ptr<DOM::Position> cursor_position() const;
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protected:
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// https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#concept-textarea/input-relevant-value
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void relevant_value_was_changed();
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private:
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virtual GC::Ref<JS::Cell> as_cell() override;
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void collapse_selection_to_offset(size_t);
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void selection_was_changed();
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// https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#concept-textarea/input-selection
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WebIDL::UnsignedLong m_selection_start { 0 };
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WebIDL::UnsignedLong m_selection_end { 0 };
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SelectionDirection m_selection_direction { SelectionDirection::None };
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// https://w3c.github.io/selection-api/#dfn-has-scheduled-selectionchange-event
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bool m_has_scheduled_selectionchange_event { false };
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// https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#mutability
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bool m_is_mutable { true };
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};
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}
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