Replace g_idle_add_full() with IdleRegister (#3767)

rtgui/batchqueuepanel.cc

@@ -24,14 +24,6 @@
 #include "soundman.h"
 #include "rtimage.h"
 
-int processLoadedBatchQueueUIThread (void* data)
-{
-
-    BatchQueue* bq = static_cast<BatchQueue*>(data);
-    bq->resizeLoadedQueue();
-    return 0;
-}
-
 static Glib::ustring makeFolderLabel(Glib::ustring path)
 {
     if (!Glib::file_test (path, Glib::FILE_TEST_IS_DIR)) {
@@ -185,11 +177,22 @@ BatchQueuePanel::BatchQueuePanel (FileCatalog* aFileCatalog)
 
     show_all ();
 
-    if (batchQueue->loadBatchQueue ()) {
-        g_idle_add_full (G_PRIORITY_LOW, processLoadedBatchQueueUIThread, batchQueue, nullptr);
+    if (batchQueue->loadBatchQueue()) {
+        const auto func = [](gpointer data) -> gboolean {
+            static_cast<BatchQueue*>(data)->resizeLoadedQueue();
+
+            return FALSE;
+        };
+
+        idle_register.add(func, batchQueue, G_PRIORITY_LOW);
     }
 }
 
+BatchQueuePanel::~BatchQueuePanel()
+{
+    idle_register.destroy();
+}
+
 void BatchQueuePanel::init (RTWindow *parent)
 {
     this->parent = parent;