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LibWeb: Implement all "attributes" mutation records for MutationObserver
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4 changed files with 62 additions and 6 deletions
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@ -7,6 +7,8 @@
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#include <LibWeb/DOM/Attribute.h>
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#include <LibWeb/DOM/Document.h>
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#include <LibWeb/DOM/Element.h>
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#include <LibWeb/DOM/MutationType.h>
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#include <LibWeb/DOM/StaticNodeList.h>
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namespace Web::DOM {
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@ -23,6 +25,11 @@ Attribute::Attribute(Document& document, FlyString local_name, String value, Ele
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{
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}
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Element* Attribute::owner_element()
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{
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return m_owner_element;
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}
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Element const* Attribute::owner_element() const
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{
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return m_owner_element;
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@ -33,4 +40,33 @@ void Attribute::set_owner_element(Element const* owner_element)
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m_owner_element = owner_element;
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}
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// https://dom.spec.whatwg.org/#set-an-existing-attribute-value
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void Attribute::set_value(String value)
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{
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// 1. If attribute’s element is null, then set attribute’s value to value.
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if (!owner_element()) {
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m_value = move(value);
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return;
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}
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// 2. Otherwise, change attribute to value.
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// https://dom.spec.whatwg.org/#concept-element-attributes-change
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// 1. Handle attribute changes for attribute with attribute’s element, attribute’s value, and value.
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handle_attribute_changes(*owner_element(), m_value, value);
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// 2. Set attribute’s value to value.
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m_value = move(value);
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}
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// https://dom.spec.whatwg.org/#handle-attribute-changes
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void Attribute::handle_attribute_changes(Element& element, String const& old_value, [[maybe_unused]] String const& new_value)
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{
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// 1. Queue a mutation record of "attributes" for element with attribute’s local name, attribute’s namespace, oldValue, « », « », null, and null.
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element.queue_mutation_record(MutationType::attributes, local_name(), namespace_uri(), old_value, StaticNodeList::create({}), StaticNodeList::create({}), nullptr, nullptr);
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// FIXME: 2. If element is custom, then enqueue a custom element callback reaction with element, callback name "attributeChangedCallback", and an argument list containing attribute’s local name, oldValue, newValue, and attribute’s namespace.
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// FIXME: 3. Run the attribute change steps with element, attribute’s local name, oldValue, newValue, and attribute’s namespace.
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}
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}
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