From b6f1868e7f8032c7086f1d0996ccfb2ded13731d Mon Sep 17 00:00:00 2001
From: Moritz Lipp <mlq@pwmt.org>
Date: Mon, 20 Feb 2012 20:07:24 +0100
Subject: [PATCH] Fix automatic file reloading

---
 callbacks.c | 11 +++++----
 commands.c  |  6 ++---
 document.c  | 26 ---------------------
 document.h  |  8 -------
 shortcuts.c | 14 +++---------
 zathura.c   | 66 ++++++++++++++++++++++++++++++++++++++++++++++++++---
 zathura.h   | 13 ++++++++++-
 7 files changed, 88 insertions(+), 56 deletions(-)

diff --git a/callbacks.c b/callbacks.c
index 984c902..e3784cb 100644
--- a/callbacks.c
+++ b/callbacks.c
@@ -221,11 +221,14 @@ cb_file_monitor(GFileMonitor* monitor, GFile* file, GFile* UNUSED(other_file), G
   g_return_if_fail(file     != NULL);
   g_return_if_fail(session  != NULL);
 
-  if (event != G_FILE_MONITOR_EVENT_CHANGES_DONE_HINT) {
-    return;
+  switch (event) {
+    case G_FILE_MONITOR_EVENT_CHANGES_DONE_HINT:
+    case G_FILE_MONITOR_EVENT_CREATED:
+      sc_reload(session, NULL, NULL, 0);
+      break;
+    default:
+      return;
   }
-
-  sc_reload(session, NULL, NULL, 0);
 }
 
 static gboolean
diff --git a/commands.c b/commands.c
index 5796e64..fe0bae6 100644
--- a/commands.c
+++ b/commands.c
@@ -116,7 +116,7 @@ cmd_close(girara_session_t* session, girara_list_t* UNUSED(argument_list))
     return true;
   }
 
-  document_close(zathura);
+  document_close(zathura, false);
 
   return true;
 }
@@ -198,8 +198,8 @@ cmd_open(girara_session_t* session, girara_list_t* argument_list)
     girara_notify(session, GIRARA_ERROR, "Too many arguments.");
     return false;
   } else if (argc >= 1) {
-    if (zathura->document) {
-      document_close(zathura);
+    if (zathura->document != NULL) {
+      document_close(zathura, false);
     }
 
     document_open(zathura, girara_list_nth(argument_list, 0), (argc == 2) ? girara_list_nth(argument_list, 1) :  NULL);
diff --git a/document.c b/document.c
index 857070f..fbaef7c 100644
--- a/document.c
+++ b/document.c
@@ -216,8 +216,6 @@ 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
@@ -328,24 +326,6 @@ zathura_document_open(zathura_t* zathura, const char* path, const char* password
     document->pages[page_id] = page;
   }
 
-  /* install file monitor */
-  file_uri = g_filename_to_uri(real_path, NULL, NULL);
-  if (file_uri == NULL) {
-    goto error_free;
-  }
-
-  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), zathura->ui.session);
-
   /* apply open adjustment */
   char* adjust_open = "best-fit";
   document->adjust_mode = ADJUST_BESTFIT;
@@ -360,16 +340,10 @@ zathura_document_open(zathura_t* zathura, const char* path, const char* password
     g_free(adjust_open);
   }
 
-  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) {
diff --git a/document.h b/document.h
index 604470b..d17fa42 100644
--- a/document.h
+++ b/document.h
@@ -300,14 +300,6 @@ 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;
 };
 
 /**
diff --git a/shortcuts.c b/shortcuts.c
index d71b3de..09167fc 100644
--- a/shortcuts.c
+++ b/shortcuts.c
@@ -375,23 +375,15 @@ sc_reload(girara_session_t* session, girara_argument_t* UNUSED(argument),
   g_return_val_if_fail(session->global.data != NULL, false);
   zathura_t* zathura = session->global.data;
 
-  if (zathura->document == NULL || zathura->document->file_path == NULL) {
+  if (zathura->file_monitor.file_path == NULL) {
     return false;
   }
 
-  /* save current document path and password */
-  char* path     = g_strdup(zathura->document->file_path);
-  char* password = zathura->document->password ? g_strdup(zathura->document->password) : NULL;
-
   /* close current document */
-  document_close(zathura);
+  document_close(zathura, true);
 
   /* reopen document */
-  document_open(zathura, path, password);
-
-  /* clean up */
-  g_free(path);
-  g_free(password);
+  document_open(zathura, zathura->file_monitor.file_path, zathura->file_monitor.password);
 
   return false;
 }
diff --git a/zathura.c b/zathura.c
index 76d4653..eb4a558 100644
--- a/zathura.c
+++ b/zathura.c
@@ -273,7 +273,7 @@ zathura_free(zathura_t* zathura)
     return;
   }
 
-  document_close(zathura);
+  document_close(zathura, false);
 
   if (zathura->ui.session != NULL) {
     girara_session_destroy(zathura->ui.session);
@@ -408,6 +408,36 @@ document_open(zathura_t* zathura, const char* path, const char* password)
     goto error_out;
   }
 
+  /* install file monitor */
+  gchar* file_uri = g_filename_to_uri(document->file_path, NULL, NULL);
+  if (file_uri == NULL) {
+    goto error_free;
+  }
+
+  zathura->file_monitor.file = g_file_new_for_uri(file_uri);
+  if (zathura->file_monitor.file == NULL) {
+    goto error_free;
+  }
+
+  zathura->file_monitor.monitor = g_file_monitor_file(zathura->file_monitor.file, G_FILE_MONITOR_NONE, NULL, NULL);
+  if (zathura->file_monitor.monitor == NULL) {
+    goto error_free;
+  }
+
+  g_signal_connect(G_OBJECT(zathura->file_monitor.monitor), "changed", G_CALLBACK(cb_file_monitor), zathura->ui.session);
+
+  zathura->file_monitor.file_path = g_strdup(document->file_path);
+  if (zathura->file_monitor.file_path == NULL) {
+    goto error_free;
+  }
+
+  if (document->password != NULL) {
+    zathura->file_monitor.password = g_strdup(document->password);
+    if (zathura->file_monitor.password == NULL) {
+      goto error_free;
+    }
+  }
+
   zathura->document = document;
 
   /* view mode */
@@ -436,10 +466,16 @@ document_open(zathura_t* zathura, const char* path, const char* password)
   page_set_delayed(zathura, document->current_page_number - 1);
   cb_view_vadjustment_value_changed(NULL, zathura);
 
+  free(file_uri);
+
   return true;
 
 error_free:
 
+  if (file_uri != NULL) {
+    g_free(file_uri);
+  }
+
   zathura_document_free(document);
 
 error_out:
@@ -478,12 +514,36 @@ remove_page_from_table(GtkWidget* page, gpointer permanent)
 }
 
 bool
-document_close(zathura_t* zathura)
+document_close(zathura_t* zathura, bool keep_monitor)
 {
-  if (zathura->document == NULL) {
+  if (zathura == NULL || zathura->document == NULL) {
     return false;
   }
 
+  /* remove monitor */
+  if (keep_monitor == false) {
+    if (zathura->file_monitor.monitor != NULL) {
+      g_file_monitor_cancel(zathura->file_monitor.monitor);
+      g_object_unref(zathura->file_monitor.monitor);
+      zathura->file_monitor.monitor = NULL;
+    }
+
+    if (zathura->file_monitor.file != NULL) {
+      g_object_unref(zathura->file_monitor.file);
+      zathura->file_monitor.file = NULL;
+    }
+
+    if (zathura->file_monitor.file_path != NULL) {
+      g_free(zathura->file_monitor.file_path);
+      zathura->file_monitor.file_path = NULL;
+    }
+
+    if (zathura->file_monitor.password != NULL) {
+      g_free(zathura->file_monitor.password);
+      zathura->file_monitor.password = NULL;
+    }
+  }
+
   /* store last seen page */
   zathura_db_set_fileinfo(zathura->database, zathura->document->file_path, zathura->document->current_page_number,
       /* zathura->document->offset TODO */ 0, zathura->document->scale,
diff --git a/zathura.h b/zathura.h
index 2c27467..b2d14d3 100644
--- a/zathura.h
+++ b/zathura.h
@@ -109,6 +109,16 @@ typedef struct zathura_s
 
   zathura_document_t* document; /**< The current document */
   zathura_database_t* database; /**< The database */
+
+  /**
+   * File monitor
+   */
+  struct {
+    GFileMonitor* monitor; /**< File monitor */
+    GFile* file; /**< File for file monitor */
+    gchar* file_path; /**< Save file path */
+    gchar* password; /**< Save password */
+  } file_monitor;
 } zathura_t;
 
 /**
@@ -153,9 +163,10 @@ bool document_save(zathura_t* zathura, const char* path, bool overwrite);
  * Closes the current opened document
  *
  * @param zathura The zathura session
+ * @param keep_monitor Set to true if monitor should be kept (sc_reload)
  * @return If no error occured true, otherwise false, is returned.
  */
-bool document_close(zathura_t* zathura);
+bool document_close(zathura_t* zathura, bool keep_monitor);
 
 /**
  * Opens the page with the given number