Set focus to current active window

android/service/android_api_skeleton.cpp

@@ -15,6 +15,8 @@
  *
  */
 
+#define LOG_TAG "Anboxd"
+
 #include "android/service/android_api_skeleton.h"
 
 #include "anbox_rpc.pb.h"
@@ -23,6 +25,8 @@
 #include <core/posix/exec.h>
 #include <core/posix/child_process.h>
 
+#include <binder/IServiceManager.h>
+
 namespace {
 std::map<std::string,std::string> common_env = {
     {"ANDROID_DATA", "/data"},
@@ -48,6 +52,14 @@ void AndroidApiSkeleton::wait_for_process(core::posix::ChildProcess &process,
     }
 }
 
+void AndroidApiSkeleton::connect_services() {
+    if (!activity_manager_.get()) {
+        auto am = android::defaultServiceManager()->getService(android::String16("activity"));
+        if (am.get())
+            activity_manager_ = new android::BpActivityManager(am);
+    }
+}
+
 void AndroidApiSkeleton::install_application(anbox::protobuf::bridge::InstallApplication const *request,
                                  anbox::protobuf::rpc::Void *response,
                                  google::protobuf::Closure *done) {
@@ -106,4 +118,19 @@ void AndroidApiSkeleton::set_dns_servers(anbox::protobuf::bridge::SetDnsServers
 
     done->Run();
 }
+
+void AndroidApiSkeleton::set_focused_task(anbox::protobuf::bridge::SetFocusedTask const *request,
+                                          anbox::protobuf::rpc::Void *response,
+                                          google::protobuf::Closure *done) {
+    (void) response;
+
+    connect_services();
+
+    if (activity_manager_.get())
+        activity_manager_->setFocusedTask(request->id());
+    else
+        response->set_error("ActivityManager is not available");
+
+    done->Run();
+}
 } // namespace anbox