From 0415d03b4f11e0b3ca568fbaf676b583cc614afa Mon Sep 17 00:00:00 2001
From: Timothy Flynn <trflynn89@pm.me>
Date: Mon, 13 Nov 2023 14:45:38 -0500
Subject: [PATCH] Ladybird: Register Ladybird as a browser-type application on
 macOS

This allows Ladybird to be the default browser on macOS, and allows for
opening some file types (.html, .svg, .md, etc.) with Ladybird.

Note this currently only works in the GN build (and thus the Qt chrome).
The CMake build does not set up the Resources directory properly for
macOS to run the Ladybird app without $SERENITY_SOURCE_DIR set.
---
 Ladybird/Info.plist  | 50 ++++++++++++++++++++++++++++++++++++++++++++
 Ladybird/Qt/main.cpp | 38 ++++++++++++++++++++++++++++++++-
 2 files changed, 87 insertions(+), 1 deletion(-)

diff --git a/Ladybird/Info.plist b/Ladybird/Info.plist
index ffa29253741..88d08e9093f 100644
--- a/Ladybird/Info.plist
+++ b/Ladybird/Info.plist
@@ -20,5 +20,55 @@
         <string>NSApplication</string>
         <key>NSHighResolutionCapable</key>
         <string>True</string>
+        <key>CFBundleDocumentTypes</key>
+        <array>
+            <dict>
+                <key>CFBundleTypeName</key>
+                <string>Web documents</string>
+                <key>CFBundleTypeRole</key>
+                <string>Viewer</string>
+                <key>CFBundleTypeIconFile</key>
+                <string>document.icns</string>
+                <key>LSItemContentTypes</key>
+                <array>
+                    <string>public.html</string>
+                    <string>public.xhtml</string>
+                    <string>public.svg-image</string>
+                </array>
+            </dict>
+            <dict>
+                <key>CFBundleTypeName</key>
+                <string>Other documents</string>
+                <key>CFBundleTypeRole</key>
+                <string>Viewer</string>
+                <key>CFBundleTypeIconFile</key>
+                <string>document.icns</string>
+                <key>CFBundleTypeExtensions</key>
+                <array>
+                    <string>md</string>
+                </array>
+            </dict>
+        </array>
+        <key>CFBundleURLTypes</key>
+        <array>
+            <dict>
+                <key>CFBundleURLName</key>
+                <string>Web site URL</string>
+                <key>CFBundleURLSchemes</key>
+                <array>
+                    <string>http</string>
+                    <string>https</string>
+                    <string>gemini</string>
+                </array>
+            </dict>
+            <dict>
+                <key>CFBundleURLName</key>
+                <string>Local file URL</string>
+                <key>CFBundleURLSchemes</key>
+                <array>
+                    <string>file</string>
+                </array>
+            </dict>
+        </array>
     </dict>
 </plist>
diff --git a/Ladybird/Qt/main.cpp b/Ladybird/Qt/main.cpp
index 861d4768923..a72326806ce 100644
--- a/Ladybird/Qt/main.cpp
+++ b/Ladybird/Qt/main.cpp
@@ -21,6 +21,7 @@
 #include <LibWebView/Database.h>
 #include <LibWebView/URL.h>
 #include <QApplication>
+#include <QFileOpenEvent>
 
 namespace Ladybird {
 
@@ -54,9 +55,40 @@ static ErrorOr<void> handle_attached_debugger()
     return {};
 }
 
+class LadybirdApplication : public QApplication {
+public:
+    LadybirdApplication(int& argc, char** argv)
+        : QApplication(argc, argv)
+    {
+    }
+
+    Function<void(URL)> on_open_file;
+
+    bool event(QEvent* event) override
+    {
+        switch (event->type()) {
+        case QEvent::FileOpen: {
+            if (!on_open_file)
+                break;
+
+            auto const& open_event = *static_cast<QFileOpenEvent const*>(event);
+            auto file = MUST(ak_string_from_qstring(open_event.file()));
+
+            if (auto file_url = WebView::sanitize_url(file); file_url.has_value())
+                on_open_file(file_url.release_value());
+        }
+
+        default:
+            break;
+        }
+
+        return QApplication::event(event);
+    }
+};
+
 ErrorOr<int> serenity_main(Main::Arguments arguments)
 {
-    QApplication app(arguments.argc, arguments.argv);
+    LadybirdApplication app(arguments.argc, arguments.argv);
 
     Core::EventLoopManager::install(*new Ladybird::EventLoopManagerQt);
     Core::EventLoop event_loop;
@@ -111,6 +143,10 @@ ErrorOr<int> serenity_main(Main::Arguments arguments)
     Ladybird::BrowserWindow window(initial_urls, cookie_jar, webdriver_content_ipc_path, enable_callgrind_profiling ? WebView::EnableCallgrindProfiling::Yes : WebView::EnableCallgrindProfiling::No, use_lagom_networking ? Ladybird::UseLagomNetworking::Yes : Ladybird::UseLagomNetworking::No, use_gpu_painting ? WebView::EnableGPUPainting::Yes : WebView::EnableGPUPainting::No);
     window.setWindowTitle("Ladybird");
 
+    app.on_open_file = [&](auto file_url) {
+        window.view().load(file_url);
+    };
+
     if (Ladybird::Settings::the()->is_maximized()) {
         window.showMaximized();
     } else {