LibWeb+LibWebView+WebContent: Inform the UI about DOM mutations

This will allow our DevTools server to inform the Firefox DevTools client about DOM mutations.
Author: https://github.com/trflynn89 Commit: 2c4b420acc Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/3850
2025-08-02 14:19:48 +00:00 · 2025-03-06 17:32:43 -05:00 · 2025-03-06 17:32:43 -05:00 · 2c4b420acc · 2025-03-08 00:27:41 +00:00
commit 2c4b420acc
parent bf723aad98
17 changed files with 253 additions and 12 deletions
--- a/Libraries/LibWebView/Mutation.cpp
+++ b/Libraries/LibWebView/Mutation.cpp
@ -0,0 +1,81 @@
+/*
+ * Copyright (c) 2025, Tim Flynn <trflynn89@ladybird.org>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#include <LibIPC/Decoder.h>
+#include <LibIPC/Encoder.h>
+#include <LibWebView/Mutation.h>
+
+template<>
+ErrorOr<void> IPC::encode(Encoder& encoder, WebView::AttributeMutation const& mutation)
+{
+    TRY(encoder.encode(mutation.attribute_name));
+    TRY(encoder.encode(mutation.new_value));
+    return {};
+}
+
+template<>
+ErrorOr<WebView::AttributeMutation> IPC::decode(Decoder& decoder)
+{
+    auto attribute_name = TRY(decoder.decode<String>());
+    auto new_value = TRY(decoder.decode<Optional<String>>());
+
+    return WebView::AttributeMutation { move(attribute_name), move(new_value) };
+}
+
+template<>
+ErrorOr<void> IPC::encode(Encoder& encoder, WebView::CharacterDataMutation const& mutation)
+{
+    TRY(encoder.encode(mutation.new_value));
+    return {};
+}
+
+template<>
+ErrorOr<WebView::CharacterDataMutation> IPC::decode(Decoder& decoder)
+{
+    auto new_value = TRY(decoder.decode<String>());
+
+    return WebView::CharacterDataMutation { move(new_value) };
+}
+
+template<>
+ErrorOr<void> IPC::encode(Encoder& encoder, WebView::ChildListMutation const& mutation)
+{
+    TRY(encoder.encode(mutation.added));
+    TRY(encoder.encode(mutation.removed));
+    TRY(encoder.encode(mutation.target_child_count));
+    return {};
+}
+
+template<>
+ErrorOr<WebView::ChildListMutation> IPC::decode(Decoder& decoder)
+{
+    auto added = TRY(decoder.decode<Vector<Web::UniqueNodeID>>());
+    auto removed = TRY(decoder.decode<Vector<Web::UniqueNodeID>>());
+    auto target_child_count = TRY(decoder.decode<size_t>());
+
+    return WebView::ChildListMutation { move(added), move(removed), target_child_count };
+}
+
+template<>
+ErrorOr<void> IPC::encode(Encoder& encoder, WebView::Mutation const& mutation)
+{
+    TRY(encoder.encode(mutation.type));
+    TRY(encoder.encode(mutation.target));
+    TRY(encoder.encode(mutation.serialized_target));
+    TRY(encoder.encode(mutation.mutation));
+    return {};
+}
+
+template<>
+ErrorOr<WebView::Mutation> IPC::decode(Decoder& decoder)
+{
+    auto type = TRY(decoder.decode<String>());
+    auto target = TRY(decoder.decode<Web::UniqueNodeID>());
+    auto serialized_target = TRY(decoder.decode<String>());
+    auto mutation = TRY(decoder.decode<WebView::Mutation::Type>());
+
+    return WebView::Mutation { move(type), target, move(serialized_target), move(mutation) };
+}