Implemented auto reload basics

callbacks.c

@@ -211,3 +211,17 @@ error_ret:
 
   return FALSE;
 }
+
+void
+cb_file_monitor(GFileMonitor* monitor, GFile* file, GFile* UNUSED(other_file), GFileMonitorEvent event, girara_session_t* session)
+{
+  g_return_if_fail(monitor  != NULL);
+  g_return_if_fail(file     != NULL);
+  g_return_if_fail(session  != NULL);
+
+  if (event != G_FILE_MONITOR_EVENT_CHANGES_DONE_HINT) {
+    return;
+  }
+
+  sc_reload(session, NULL, NULL, 0);
+}

callbacks.h

@@ -7,6 +7,8 @@
 #include <girara/types.h>
 #include <girara/macros.h>
 
+#include "document.h"
+
 /**
  * Quits the current zathura session
  *
@@ -60,4 +62,15 @@ void cb_index_row_activated(GtkTreeView* tree_view, GtkTreePath* path,
  */
 bool cb_sc_follow(GtkEntry* entry, girara_session_t* session);
 
+/**
+ * Emitted when file has been changed
+ *
+ * @param monitor The file monitor
+ * @param file The file
+ * @param other_file A file or NULL
+ * @param event The monitor event
+ * @param session The girara session
+ */
+void cb_file_monitor(GFileMonitor* monitor, GFile* file, GFile* other_file, GFileMonitorEvent event, girara_session_t* session);
+
 #endif // CALLBACKS_H

document.c

@@ -214,6 +214,8 @@ zathura_document_open(zathura_t* zathura, const char* path, const char* password
     return NULL;
   }
 
+  char* file_uri = NULL;
+
   /* determine real path */
   long path_max;
 #ifdef PATH_MAX
@@ -268,8 +270,11 @@ zathura_document_open(zathura_t* zathura, const char* path, const char* password
     document->scale = 1;
   }
 
-  if (plugin->open_function != NULL) {
-    if (plugin->open_function(document) == true) {
+  if (plugin->open_function == NULL || plugin->open_function(document) == false) {
+    girara_error("could not open file\n");
+    goto error_free;
+  }
+
   /* update statusbar */
   girara_statusbar_item_set_text(zathura->ui.session, zathura->ui.statusbar.file, real_path);
 
@@ -288,14 +293,34 @@ zathura_document_open(zathura_t* zathura, const char* path, const char* password
     document->pages[page_id] = page;
   }
 
-      return document;
-    }
+  /* install file monitor */
+  file_uri = g_filename_to_uri(real_path, NULL, NULL);
+  if (file_uri == NULL) {
+    goto error_free;
   }
 
-  girara_error("could not open file\n");
+  document->file_monitor.file = g_file_new_for_uri(file_uri);
+  if (document->file_monitor.file == NULL) {
+    goto error_free;
+  }
+
+  document->file_monitor.monitor = g_file_monitor_file(document->file_monitor.file, G_FILE_MONITOR_NONE, NULL, NULL);
+  if (document->file_monitor.monitor == NULL) {
+    goto error_free;
+  }
+
+  g_signal_connect(G_OBJECT(document->file_monitor.monitor), "changed", G_CALLBACK(cb_file_monitor), document);
+
+  g_free(file_uri);
+
+  return document;
 
 error_free:
 
+  if (file_uri != NULL) {
+    g_free(file_uri);
+  }
+
   free(real_path);
 
   if (document != NULL && document->pages != NULL) {

document.h

@@ -261,6 +261,14 @@ struct zathura_document_s
    * Document pages
    */
   zathura_page_t** pages;
+
+  /**
+   * File monitor
+   */
+  struct {
+    GFileMonitor* monitor; /**< File monitor */
+    GFile* file; /**< File for file monitor */
+  } file_monitor;
 };
 
 /**