Implement noop file monitor

meson.build

@@ -131,6 +131,7 @@ sources = files(
   'zathura/document.c',
   'zathura/file-monitor.c',
   'zathura/file-monitor-glib.c',
+  'zathura/file-monitor-noop.c',
   'zathura/file-monitor-signal.c',
   'zathura/jumplist.c',
   'zathura/links.c',

zathura/file-monitor-noop.c

@@ -0,0 +1,50 @@
+/* See LICENSE file for license and copyright information */
+
+#include "file-monitor-noop.h"
+
+#include <girara/utils.h>
+#ifdef G_OS_UNIX
+#include <glib-unix.h>
+#endif
+
+struct zathura_noopfilemonitor_s
+{
+  ZathuraFileMonitor parent;
+};
+
+G_DEFINE_TYPE(ZathuraNoopFileMonitor, zathura_noopfilemonitor,
+              ZATHURA_TYPE_FILEMONITOR)
+
+static void
+start(ZathuraFileMonitor* GIRARA_UNUSED(file_monitor))
+{
+}
+
+static void
+stop(ZathuraFileMonitor* GIRARA_UNUSED(file_monitor))
+{
+}
+
+static void
+zathura_noopfilemonitor_finalize(GObject* object)
+{
+  stop(ZATHURA_FILEMONITOR(object));
+
+  G_OBJECT_CLASS(zathura_noopfilemonitor_parent_class)->finalize(object);
+}
+
+static void
+zathura_noopfilemonitor_class_init(ZathuraNoopFileMonitorClass* class)
+{
+  ZathuraFileMonitorClass* filemonitor_class = ZATHURA_FILEMONITOR_CLASS(class);
+  filemonitor_class->start                   = start;
+  filemonitor_class->stop                    = stop;
+
+  GObjectClass* object_class = G_OBJECT_CLASS(class);
+  object_class->finalize     = zathura_noopfilemonitor_finalize;
+}
+
+static void
+zathura_noopfilemonitor_init(ZathuraNoopFileMonitor* GIRARA_UNUSED(noopfilemonitor))
+{
+}

zathura/file-monitor-noop.h

@@ -0,0 +1,33 @@
+/* See LICENSE file for license and copyright information */
+
+#ifndef FILEMONITOR_NOOP_H
+#define FILEMONITOR_NOOP_H
+
+#include "file-monitor.h"
+
+#define ZATHURA_TYPE_NOOPFILEMONITOR (zathura_noopfilemonitor_get_type())
+#define ZATHURA_NOOPFILEMONITOR(obj)                                         \
+  (G_TYPE_CHECK_INSTANCE_CAST((obj), ZATHURA_TYPE_NOOPFILEMONITOR,           \
+                              ZathuraNoopFileMonitor))
+#define ZATHURA_NOOPFILEMONITOR_CLASS(obj)                                   \
+  (G_TYPE_CHECK_CLASS_CAST((obj), ZATHURA_TYPE_NOOPFILEMONITOR,              \
+                           ZathuraNoopFileMonitorClass))
+#define ZATHURA_IS_NOOPFILEMONITOR(obj)                                      \
+  (G_TYPE_CHECK_INSTANCE_TYPE((obj), ZATHURA_TYPE_NOOPFILEMONITOR))
+#define ZATHURA_IS_NOOPFILEMONITOR_CLASS(obj)                                \
+  (G_TYPE_CHECK_CLASS_TYPE((obj), ZATHURA_TYPE_NOOPFILEMONITOR))
+#define ZATHURA_NOOPFILEMONITOR_GET_CLASS(obj)                               \
+  (G_TYPE_INSTANCE_GET_CLASS((obj), ZATHURA_TYPE_NOOPFILEMONITOR,            \
+                             ZathuraNoopFileMonitorClass))
+
+typedef struct zathura_noopfilemonitor_s       ZathuraNoopFileMonitor;
+typedef struct zathura_noopfilemonitor_class_s ZathuraNoopFileMonitorClass;
+
+struct zathura_noopfilemonitor_class_s
+{
+  ZathuraFileMonitorClass parent_class;
+};
+
+GType zathura_noopfilemonitor_get_type(void) G_GNUC_CONST;
+
+#endif

zathura/file-monitor.c

@@ -5,6 +5,7 @@
 #ifdef G_OS_UNIX
 #include "file-monitor-signal.h"
 #endif
+#include "file-monitor-noop.h"
 #include "macros.h"
 
 #include <girara/utils.h>
@@ -141,6 +142,11 @@ zathura_filemonitor_new(const char*                file_path,
                          NULL);
       break;
 #endif
+    case ZATHURA_FILEMONITOR_NOOP:
+      girara_debug("using noop file monitor");
+      ret = g_object_new(ZATHURA_TYPE_NOOPFILEMONITOR, "file-path", file_path,
+                         NULL);
+      break;
     default:
       girara_debug("invalid filemonitor type: %d", filemonitor_type);
       g_return_val_if_fail(false, NULL);

zathura/file-monitor.h

@@ -55,7 +55,8 @@ GType zathura_filemonitor_get_type(void) G_GNUC_CONST;
  */
 typedef enum zathura_filemonitor_type_e {
   ZATHURA_FILEMONITOR_GLIB, /**< Use filemonitor from GLib */
-  ZATHURA_FILEMONITOR_SIGNAL /**< Reload when receiving SIGHUP */
+  ZATHURA_FILEMONITOR_SIGNAL, /**< Reload when receiving SIGHUP */
+  ZATHURA_FILEMONITOR_NOOP /**< Monitor that does nothing */
 } zathura_filemonitor_type_t;
 
 /**