From 54f66c574ca02a592490946149fd05bcc4e1e6ee Mon Sep 17 00:00:00 2001
From: Andrew Kaster <akaster@serenityos.org>
Date: Wed, 26 Jun 2024 13:43:45 -0600
Subject: [PATCH] LibWebView: Allow querying and iterating all extant
 WebContentClients

This is mostly useful when some application-level logic needs to
iterate over all child processes. A more robust Process abstraction
would make this easier.
---
 .../Libraries/LibWebView/WebContentClient.cpp    |  2 +-
 Userland/Libraries/LibWebView/WebContentClient.h | 16 ++++++++++++++++
 2 files changed, 17 insertions(+), 1 deletion(-)

diff --git a/Userland/Libraries/LibWebView/WebContentClient.cpp b/Userland/Libraries/LibWebView/WebContentClient.cpp
index edb4612257e..3b36a777bcf 100644
--- a/Userland/Libraries/LibWebView/WebContentClient.cpp
+++ b/Userland/Libraries/LibWebView/WebContentClient.cpp
@@ -11,7 +11,7 @@
 
 namespace WebView {
 
-static HashTable<WebContentClient*> s_clients;
+HashTable<WebContentClient*> WebContentClient::s_clients;
 
 Optional<ViewImplementation&> WebContentClient::view_for_pid_and_page_id(pid_t pid, u64 page_id)
 {
diff --git a/Userland/Libraries/LibWebView/WebContentClient.h b/Userland/Libraries/LibWebView/WebContentClient.h
index 6e2df157d06..3a21c5b75ad 100644
--- a/Userland/Libraries/LibWebView/WebContentClient.h
+++ b/Userland/Libraries/LibWebView/WebContentClient.h
@@ -28,6 +28,11 @@ class WebContentClient final
 public:
     static Optional<ViewImplementation&> view_for_pid_and_page_id(pid_t pid, u64 page_id);
 
+    template<CallableAs<IterationDecision, WebContentClient&> Callback>
+    static void for_each_client(Callback callback);
+
+    static size_t client_count() { return s_clients.size(); }
+
     WebContentClient(NonnullOwnPtr<Core::LocalSocket>, ViewImplementation&);
     ~WebContentClient();
 
@@ -121,6 +126,17 @@ private:
     HashMap<u64, ViewImplementation*> m_views;
 
     ProcessHandle m_process_handle;
+
+    static HashTable<WebContentClient*> s_clients;
 };
 
+template<CallableAs<IterationDecision, WebContentClient&> Callback>
+void WebContentClient::for_each_client(Callback callback)
+{
+    for (auto& it : s_clients) {
+        if (callback(*it) == IterationDecision::Break)
+            return;
+    }
+}
+
 }