From c6a11a77b553f79141d43ac56ef1d19056b73113 Mon Sep 17 00:00:00 2001
From: Timothy Flynn <trflynn89@pm.me>
Date: Thu, 7 Dec 2023 11:12:43 -0500
Subject: [PATCH] LibWebView+WebContent: Add a WebContent IPC to clone a DOM
 node

---
 Userland/Libraries/LibWebView/ViewImplementation.cpp |  5 +++++
 Userland/Libraries/LibWebView/ViewImplementation.h   |  1 +
 .../Services/WebContent/ConnectionFromClient.cpp     | 12 ++++++++++++
 Userland/Services/WebContent/ConnectionFromClient.h  |  1 +
 Userland/Services/WebContent/WebContentServer.ipc    |  1 +
 5 files changed, 20 insertions(+)

diff --git a/Userland/Libraries/LibWebView/ViewImplementation.cpp b/Userland/Libraries/LibWebView/ViewImplementation.cpp
index d98ff6e0bf..840114b854 100644
--- a/Userland/Libraries/LibWebView/ViewImplementation.cpp
+++ b/Userland/Libraries/LibWebView/ViewImplementation.cpp
@@ -211,6 +211,11 @@ Optional<i32> ViewImplementation::create_child_text_node(i32 node_id)
     return client().create_child_text_node(node_id);
 }
 
+Optional<i32> ViewImplementation::clone_dom_node(i32 node_id)
+{
+    return client().clone_dom_node(node_id);
+}
+
 void ViewImplementation::remove_dom_node(i32 node_id)
 {
     client().async_remove_dom_node(node_id);
diff --git a/Userland/Libraries/LibWebView/ViewImplementation.h b/Userland/Libraries/LibWebView/ViewImplementation.h
index 6ab741344c..4f9d5770a6 100644
--- a/Userland/Libraries/LibWebView/ViewImplementation.h
+++ b/Userland/Libraries/LibWebView/ViewImplementation.h
@@ -69,6 +69,7 @@ public:
     void replace_dom_node_attribute(i32 node_id, String name, Vector<Attribute> replacement_attributes);
     Optional<i32> create_child_element(i32 node_id);
     Optional<i32> create_child_text_node(i32 node_id);
+    Optional<i32> clone_dom_node(i32 node_id);
     void remove_dom_node(i32 node_id);
     Optional<String> get_dom_node_html(i32 node_id);
 
diff --git a/Userland/Services/WebContent/ConnectionFromClient.cpp b/Userland/Services/WebContent/ConnectionFromClient.cpp
index 77dd57efb2..4fcafa7bad 100644
--- a/Userland/Services/WebContent/ConnectionFromClient.cpp
+++ b/Userland/Services/WebContent/ConnectionFromClient.cpp
@@ -745,6 +745,18 @@ Messages::WebContentServer::CreateChildTextNodeResponse ConnectionFromClient::cr
     return text_node->unique_id();
 }
 
+Messages::WebContentServer::CloneDomNodeResponse ConnectionFromClient::clone_dom_node(i32 node_id)
+{
+    auto* dom_node = Web::DOM::Node::from_unique_id(node_id);
+    if (!dom_node || !dom_node->parent_node())
+        return OptionalNone {};
+
+    auto dom_node_clone = dom_node->clone_node(nullptr, true);
+    dom_node->parent_node()->insert_before(dom_node_clone, dom_node->next_sibling());
+
+    return dom_node_clone->unique_id();
+}
+
 void ConnectionFromClient::remove_dom_node(i32 node_id)
 {
     auto* active_document = page().page().top_level_browsing_context().active_document();
diff --git a/Userland/Services/WebContent/ConnectionFromClient.h b/Userland/Services/WebContent/ConnectionFromClient.h
index 5902ac711f..cf2fc794ad 100644
--- a/Userland/Services/WebContent/ConnectionFromClient.h
+++ b/Userland/Services/WebContent/ConnectionFromClient.h
@@ -82,6 +82,7 @@ private:
     virtual void replace_dom_node_attribute(i32 node_id, String const& name, Vector<WebView::Attribute> const& replacement_attributes) override;
     virtual Messages::WebContentServer::CreateChildElementResponse create_child_element(i32 node_id) override;
     virtual Messages::WebContentServer::CreateChildTextNodeResponse create_child_text_node(i32 node_id) override;
+    virtual Messages::WebContentServer::CloneDomNodeResponse clone_dom_node(i32 node_id) override;
     virtual void remove_dom_node(i32 node_id) override;
     virtual Messages::WebContentServer::GetDomNodeHtmlResponse get_dom_node_html(i32 node_id) override;
 
diff --git a/Userland/Services/WebContent/WebContentServer.ipc b/Userland/Services/WebContent/WebContentServer.ipc
index 135739be44..5926171255 100644
--- a/Userland/Services/WebContent/WebContentServer.ipc
+++ b/Userland/Services/WebContent/WebContentServer.ipc
@@ -52,6 +52,7 @@ endpoint WebContentServer
     replace_dom_node_attribute(i32 node_id, String name, Vector<WebView::Attribute> replacement_attributes) =|
     create_child_element(i32 node_id) => (Optional<i32> node_id)
     create_child_text_node(i32 node_id) => (Optional<i32> node_id)
+    clone_dom_node(i32 node_id) => (Optional<i32> node_id)
     remove_dom_node(i32 node_id) =|
     get_dom_node_html(i32 node_id) => (Optional<String> html)