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LibWeb: Refactor "editable" and "editing host" concepts

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The DOM spec defines what it means for an element to be an "editing
host", and the Editing spec does the same for the "editable" concept.
Replace our `Node::is_editable()` implementation with these
spec-compliant algorithms.

An editing host is an element that has the properties to make its
contents effectively editable. Editable elements are descendants of an
editing host. Concepts like the inheritable contenteditable attribute
are propagated through the editable algorithm.
This commit is contained in:
Jelle Raaijmakers 2024-12-06 11:41:20 +01:00 • committed by Jelle Raaijmakers
commit 1c55153d43
Notes: github-actions[bot] 2024-12-10 13:55:36 +00:00
22 changed files with 85 additions and 102 deletions
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24
Libraries/LibWeb/HTML/HTMLElement.cpp
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@ -86,25 +86,9 @@ void HTMLElement::set_dir(String const& dir)
MUST(set_attribute(HTML::AttributeNames::dir, dir));
}
bool HTMLElement::is_editable() const
{
switch (m_content_editable_state) {
case ContentEditableState::True:
case ContentEditableState::PlaintextOnly:
return true;
case ContentEditableState::False:
return false;
case ContentEditableState::Inherit:
return parent() && parent()->is_editable();
default:
VERIFY_NOT_REACHED();
}
}
bool HTMLElement::is_focusable() const
{
return m_content_editable_state == ContentEditableState::True
|| m_content_editable_state == ContentEditableState::PlaintextOnly;
return is_editing_host();
}
// https://html.spec.whatwg.org/multipage/interaction.html#dom-iscontenteditable
@ -112,7 +96,7 @@ bool HTMLElement::is_content_editable() const
{
// The isContentEditable IDL attribute, on getting, must return true if the element is either an editing host or
// editable, and false otherwise.
return is_editable();
return is_editable_or_editing_host();
}
StringView HTMLElement::content_editable() const
@ -1181,7 +1165,7 @@ WebIDL::ExceptionOr<bool> HTMLElement::toggle_popover(TogglePopoverOptionsOrForc
void HTMLElement::did_receive_focus()
{
if (m_content_editable_state != ContentEditableState::True)
if (!first_is_one_of(m_content_editable_state, ContentEditableState::True, ContentEditableState::PlaintextOnly))
return;
auto editing_host = document().editing_host_manager();
@ -1202,7 +1186,7 @@ void HTMLElement::did_receive_focus()
void HTMLElement::did_lose_focus()
{
if (m_content_editable_state != ContentEditableState::True)
if (!first_is_one_of(m_content_editable_state, ContentEditableState::True, ContentEditableState::PlaintextOnly))
return;
document().editing_host_manager()->set_active_contenteditable_element(nullptr);