Everywhere: Hoist the Libraries folder to the top-level

Author: https://github.com/trflynn89 Commit: 93712b24bf Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/2256 Reviewed-by: https://github.com/sideshowbarker
2025-08-09 01:29:17 +00:00 · 2024-11-09 12:25:08 -05:00 · 2024-11-09 12:25:08 -05:00 · 93712b24bf · 2024-11-10 11:51:52 +00:00
commit 93712b24bf
parent 950e819ee7
4547 changed files with 104 additions and 113 deletions
--- a/Libraries/LibWeb/DOM/MutationObserver.cpp
+++ b/Libraries/LibWeb/DOM/MutationObserver.cpp
@ -0,0 +1,201 @@
+/*
+ * Copyright (c) 2022, Luke Wilde <lukew@serenityos.org>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#include <LibWeb/Bindings/Intrinsics.h>
+#include <LibWeb/Bindings/MainThreadVM.h>
+#include <LibWeb/Bindings/MutationObserverPrototype.h>
+#include <LibWeb/DOM/MutationObserver.h>
+#include <LibWeb/DOM/Node.h>
+
+namespace Web::DOM {
+
+JS_DEFINE_ALLOCATOR(MutationObserver);
+JS_DEFINE_ALLOCATOR(TransientRegisteredObserver);
+
+WebIDL::ExceptionOr<JS::NonnullGCPtr<MutationObserver>> MutationObserver::construct_impl(JS::Realm& realm, JS::GCPtr<WebIDL::CallbackType> callback)
+{
+    return realm.heap().allocate<MutationObserver>(realm, realm, callback);
+}
+
+// https://dom.spec.whatwg.org/#dom-mutationobserver-mutationobserver
+MutationObserver::MutationObserver(JS::Realm& realm, JS::GCPtr<WebIDL::CallbackType> callback)
+    : PlatformObject(realm)
+    , m_callback(move(callback))
+{
+
+    // 1. Set this’s callback to callback.
+
+    // 2. Append this to this’s relevant agent’s mutation observers.
+    auto* agent_custom_data = verify_cast<Bindings::WebEngineCustomData>(realm.vm().custom_data());
+    agent_custom_data->mutation_observers.append(*this);
+}
+
+MutationObserver::~MutationObserver()
+{
+    auto* agent_custom_data = verify_cast<Bindings::WebEngineCustomData>(vm().custom_data());
+    agent_custom_data->mutation_observers.remove_all_matching([this](auto& observer) {
+        return observer.ptr() == this;
+    });
+}
+
+void MutationObserver::initialize(JS::Realm& realm)
+{
+    Base::initialize(realm);
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(MutationObserver);
+}
+
+void MutationObserver::visit_edges(Cell::Visitor& visitor)
+{
+    Base::visit_edges(visitor);
+    visitor.visit(m_callback);
+    visitor.visit(m_record_queue);
+}
+
+// https://dom.spec.whatwg.org/#dom-mutationobserver-observe
+WebIDL::ExceptionOr<void> MutationObserver::observe(Node& target, MutationObserverInit options)
+{
+    // 1. If either options["attributeOldValue"] or options["attributeFilter"] exists, and options["attributes"] does not exist, then set options["attributes"] to true.
+    if ((options.attribute_old_value.has_value() || options.attribute_filter.has_value()) && !options.attributes.has_value())
+        options.attributes = true;
+
+    // 2. If options["characterDataOldValue"] exists and options["characterData"] does not exist, then set options["characterData"] to true.
+    if (options.character_data_old_value.has_value() && !options.character_data.has_value())
+        options.character_data = true;
+
+    // 3. If none of options["childList"], options["attributes"], and options["characterData"] is true, then throw a TypeError.
+    if (!options.child_list && (!options.attributes.has_value() || !options.attributes.value()) && (!options.character_data.has_value() || !options.character_data.value()))
+        return WebIDL::SimpleException { WebIDL::SimpleExceptionType::TypeError, "Options must have one of childList, attributes or characterData set to true."sv };
+
+    // 4. If options["attributeOldValue"] is true and options["attributes"] is false, then throw a TypeError.
+    // NOTE: If attributeOldValue is present, attributes will be present because of step 1.
+    if (options.attribute_old_value.has_value() && options.attribute_old_value.value() && !options.attributes.value())
+        return WebIDL::SimpleException { WebIDL::SimpleExceptionType::TypeError, "attributes must be true if attributeOldValue is true."sv };
+
+    // 5. If options["attributeFilter"] is present and options["attributes"] is false, then throw a TypeError.
+    // NOTE: If attributeFilter is present, attributes will be present because of step 1.
+    if (options.attribute_filter.has_value() && !options.attributes.value())
+        return WebIDL::SimpleException { WebIDL::SimpleExceptionType::TypeError, "attributes must be true if attributeFilter is present."sv };
+
+    // 6. If options["characterDataOldValue"] is true and options["characterData"] is false, then throw a TypeError.
+    // NOTE: If characterDataOldValue is present, characterData will be present because of step 2.
+    if (options.character_data_old_value.has_value() && options.character_data_old_value.value() && !options.character_data.value())
+        return WebIDL::SimpleException { WebIDL::SimpleExceptionType::TypeError, "characterData must be true if characterDataOldValue is true."sv };
+
+    // 7. For each registered of target’s registered observer list, if registered’s observer is this:
+    bool updated_existing_observer = false;
+    if (target.registered_observer_list()) {
+        for (auto& registered_observer : *target.registered_observer_list()) {
+            if (registered_observer->observer().ptr() != this)
+                continue;
+
+            updated_existing_observer = true;
+
+            // 1. For each node of this’s node list, remove all transient registered observers whose source is registered from node’s registered observer list.
+            for (auto& node : m_node_list) {
+                // FIXME: Is this correct?
+                if (node.is_null())
+                    continue;
+
+                if (node->registered_observer_list()) {
+                    node->registered_observer_list()->remove_all_matching([&registered_observer](RegisteredObserver& observer) {
+                        return is<TransientRegisteredObserver>(observer) && verify_cast<TransientRegisteredObserver>(observer).source().ptr() == registered_observer;
+                    });
+                }
+            }
+
+            // 2. Set registered’s options to options.
+            registered_observer->set_options(options);
+            break;
+        }
+    }
+
+    // 8. Otherwise:
+    if (!updated_existing_observer) {
+        // 1. Append a new registered observer whose observer is this and options is options to target’s registered observer list.
+        auto new_registered_observer = RegisteredObserver::create(*this, options);
+        target.add_registered_observer(new_registered_observer);
+
+        // 2. Append target to this’s node list.
+        m_node_list.append(target.make_weak_ptr<Node>());
+    }
+
+    return {};
+}
+
+// https://dom.spec.whatwg.org/#dom-mutationobserver-disconnect
+void MutationObserver::disconnect()
+{
+    // 1. For each node of this’s node list, remove any registered observer from node’s registered observer list for which this is the observer.
+    for (auto& node : m_node_list) {
+        // FIXME: Is this correct?
+        if (node.is_null())
+            continue;
+
+        if (node->registered_observer_list()) {
+            node->registered_observer_list()->remove_all_matching([this](RegisteredObserver& registered_observer) {
+                return registered_observer.observer().ptr() == this;
+            });
+        }
+    }
+
+    // 2. Empty this’s record queue.
+    m_record_queue.clear();
+}
+
+// https://dom.spec.whatwg.org/#dom-mutationobserver-takerecords
+Vector<JS::Handle<MutationRecord>> MutationObserver::take_records()
+{
+    // 1. Let records be a clone of this’s record queue.
+    Vector<JS::Handle<MutationRecord>> records;
+    for (auto& record : m_record_queue)
+        records.append(*record);
+
+    // 2. Empty this’s record queue.
+    m_record_queue.clear();
+
+    // 3. Return records.
+    return records;
+}
+
+JS::NonnullGCPtr<RegisteredObserver> RegisteredObserver::create(MutationObserver& observer, MutationObserverInit const& options)
+{
+    return observer.heap().allocate_without_realm<RegisteredObserver>(observer, options);
+}
+
+RegisteredObserver::RegisteredObserver(MutationObserver& observer, MutationObserverInit const& options)
+    : m_observer(observer)
+    , m_options(options)
+{
+}
+
+RegisteredObserver::~RegisteredObserver() = default;
+
+void RegisteredObserver::visit_edges(Cell::Visitor& visitor)
+{
+    Base::visit_edges(visitor);
+    visitor.visit(m_observer);
+}
+
+JS::NonnullGCPtr<TransientRegisteredObserver> TransientRegisteredObserver::create(MutationObserver& observer, MutationObserverInit const& options, RegisteredObserver& source)
+{
+    return observer.heap().allocate_without_realm<TransientRegisteredObserver>(observer, options, source);
+}
+
+TransientRegisteredObserver::TransientRegisteredObserver(MutationObserver& observer, MutationObserverInit const& options, RegisteredObserver& source)
+    : RegisteredObserver(observer, options)
+    , m_source(source)
+{
+}
+
+TransientRegisteredObserver::~TransientRegisteredObserver() = default;
+
+void TransientRegisteredObserver::visit_edges(Cell::Visitor& visitor)
+{
+    Base::visit_edges(visitor);
+    visitor.visit(m_source);
+}
+
+}