Browser: Update content filters if the config file changes

Author: https://github.com/sppmacd
Commit: 5d8cda59ae
Pull-request: https://github.com/SerenityOS/serenity/pull/12241

Userland/Applications/Browser/Tab.cpp

@@ -442,6 +442,11 @@ void Tab::context_menu_requested(const Gfx::IntPoint& screen_position)
     m_tab_context_menu->popup(screen_position);
 }
 
+void Tab::content_filters_changed()
+{
+    m_web_content_view->set_content_filters(g_content_filters);
+}
+
 GUI::AbstractScrollableWidget& Tab::view()
 {
     return *m_web_content_view;

Userland/Applications/Browser/Tab.h

@@ -49,6 +49,7 @@ public:
 
     void did_become_active();
     void context_menu_requested(const Gfx::IntPoint& screen_position);
+    void content_filters_changed();
 
     void action_entered(GUI::Action&);
     void action_left(GUI::Action&);

Userland/Applications/Browser/main.cpp

@@ -4,6 +4,8 @@
  * SPDX-License-Identifier: BSD-2-Clause
  */
 
+#include "AK/IterationDecision.h"
+#include "LibCore/FileWatcher.h"
 #include <AK/StringBuilder.h>
 #include <Applications/Browser/Browser.h>
 #include <Applications/Browser/BrowserWindow.h>
@@ -102,6 +104,21 @@ ErrorOr<int> serenity_main(Main::Arguments arguments)
     Browser::CookieJar cookie_jar;
     auto window = Browser::BrowserWindow::construct(cookie_jar, first_url);
 
+    auto content_filters_watcher = TRY(Core::FileWatcher::create());
+    content_filters_watcher->on_change = [&](Core::FileWatcherEvent const&) {
+        dbgln("Reloading content filters because config file changed");
+        auto error = load_content_filters();
+        if (error.is_error()) {
+            dbgln("Reloading content filters failed: {}", error.release_error());
+            return;
+        }
+        window->tab_widget().for_each_child_of_type<Browser::Tab>([](auto& tab) {
+            tab.content_filters_changed();
+            return IterationDecision::Continue;
+        });
+    };
+    TRY(content_filters_watcher->add_watch(String::formatted("{}/BrowserContentFilters.txt", Core::StandardPaths::config_directory()), Core::FileWatcherEvent::Type::ContentModified));
+
     app->on_action_enter = [&](GUI::Action& action) {
         if (auto* browser_window = dynamic_cast<Browser::BrowserWindow*>(app->active_window())) {
             auto* tab = static_cast<Browser::Tab*>(browser_window->tab_widget().active_widget());