[gedit/wip/gedit-document-stuff] GeditDocument: use the GtkSourceFile:read-only property

[Sébastien Wilmet <swilmet src gnome org>]

commit 1e7a0553eab823724103a4dc15141f395c920063
Author: Sébastien Wilmet <swilmet gnome org>
Date:   Thu Jun 11 15:59:29 2015 +0200

    GeditDocument: use the GtkSourceFile:read-only property
    
    Less code in gedit.

 gedit/gedit-document-private.h |    3 -
 gedit/gedit-document.c         |  127 ++++++++++++++--------------------------
 gedit/gedit-document.h         |    1 +
 gedit/gedit-tab.c              |    5 +-
 4 files changed, 47 insertions(+), 89 deletions(-)
---
diff --git a/gedit/gedit-document-private.h b/gedit/gedit-document-private.h
index a8e011d..a1233fb 100644
--- a/gedit/gedit-document-private.h
+++ b/gedit/gedit-document-private.h
@@ -40,9 +40,6 @@ G_BEGIN_DECLS
 
 glong           _gedit_document_get_seconds_since_last_save_or_load    (GeditDocument       *doc);
 
-/* Note: this is a sync stat: use only on local files */
-void            _gedit_document_check_can_write_file                   (GeditDocument       *doc);
-
 gboolean        _gedit_document_needs_saving                           (GeditDocument       *doc);
 
 gboolean        _gedit_document_get_empty_search                       (GeditDocument       *doc);
diff --git a/gedit/gedit-document.c b/gedit/gedit-document.c
index 672ad85..688fd40 100644
--- a/gedit/gedit-document.c
+++ b/gedit/gedit-document.c
@@ -69,7 +69,6 @@ typedef struct
 
        guint user_action;
 
-       guint readonly : 1;
        guint language_set_by_user : 1;
        guint use_gvfs_metadata : 1;
 
@@ -263,8 +262,12 @@ gedit_document_get_property (GObject    *object,
                        break;
 
                case PROP_READ_ONLY:
-                       g_value_set_boolean (value, priv->readonly);
+               {
+                       gboolean readonly;
+                       g_object_get (priv->file, "read-only", &readonly, NULL);
+                       g_value_set_boolean (value, readonly);
                        break;
+               }
 
                case PROP_EMPTY_SEARCH:
                        g_value_set_boolean (value, priv->empty_search);
@@ -432,12 +435,20 @@ gedit_document_class_init (GeditDocumentClass *klass)
                                                              G_PARAM_READABLE |
                                                              G_PARAM_STATIC_STRINGS));
 
+       /**
+        * GeditDocument:read-only:
+        *
+        * Whether the document is read-only or not.
+        *
+        * Deprecated: 3.18: Use the #GtkSourceFile API.
+        */
        g_object_class_install_property (object_class, PROP_READ_ONLY,
                                         g_param_spec_boolean ("read-only",
                                                               "Read Only",
-                                                              "Whether the document is read only or not",
+                                                              "Whether the document is read-only or not",
                                                               FALSE,
                                                               G_PARAM_READABLE |
+                                                              G_PARAM_DEPRECATED |
                                                               G_PARAM_STATIC_STRINGS));
 
        /**
@@ -799,6 +810,14 @@ on_location_changed (GtkSourceFile *file,
 }
 
 static void
+on_readonly_changed (GtkSourceFile *file,
+                    GParamSpec    *pspec,
+                    GeditDocument *doc)
+{
+       g_object_notify (G_OBJECT (doc), "read-only");
+}
+
+static void
 gedit_document_init (GeditDocument *doc)
 {
        GeditDocumentPrivate *priv;
@@ -811,7 +830,6 @@ gedit_document_init (GeditDocument *doc)
        priv->editor_settings = g_settings_new ("org.gnome.gedit.preferences.editor");
        priv->untitled_number = get_untitled_number ();
        priv->content_type = get_default_content_type ();
-       priv->readonly = FALSE;
        priv->language_set_by_user = FALSE;
        priv->empty_search = TRUE;
 
@@ -825,6 +843,12 @@ gedit_document_init (GeditDocument *doc)
                                 doc,
                                 0);
 
+       g_signal_connect_object (priv->file,
+                                "notify::read-only",
+                                G_CALLBACK (on_readonly_changed),
+                                doc,
+                                0);
+
        g_settings_bind (priv->editor_settings,
                         GEDIT_SETTINGS_MAX_UNDO_ACTIONS,
                         doc,
@@ -1165,27 +1189,13 @@ gedit_document_get_mime_type (GeditDocument *doc)
        return g_strdup ("text/plain");
 }
 
-static void
-set_readonly (GeditDocument *doc,
-             gboolean       readonly)
-{
-       GeditDocumentPrivate *priv;
-
-       gedit_debug (DEBUG_DOCUMENT);
-
-       g_return_if_fail (GEDIT_IS_DOCUMENT (doc));
-
-       priv = gedit_document_get_instance_private (doc);
-
-       readonly = readonly != FALSE;
-
-       if (priv->readonly != readonly)
-       {
-               priv->readonly = readonly;
-               g_object_notify (G_OBJECT (doc), "read-only");
-       }
-}
-
+/**
+ * gedit_document_get_readonly:
+ * @doc: a #GeditDocument.
+ *
+ * Returns: whether the document is read-only.
+ * Deprecated: 3.18: Use gtk_source_file_is_readonly() instead.
+ */
 gboolean
 gedit_document_get_readonly (GeditDocument *doc)
 {
@@ -1195,7 +1205,7 @@ gedit_document_get_readonly (GeditDocument *doc)
 
        priv = gedit_document_get_instance_private (doc);
 
-       return priv->readonly;
+       return gtk_source_file_is_readonly (priv->file);
 }
 
 static void
@@ -1223,29 +1233,18 @@ loaded_query_info_cb (GFile         *location,
                error = NULL;
        }
 
-       if (info != NULL)
+       if (info != NULL &&
+           g_file_info_has_attribute (info, G_FILE_ATTRIBUTE_STANDARD_CONTENT_TYPE))
        {
-               if (g_file_info_has_attribute (info, G_FILE_ATTRIBUTE_STANDARD_CONTENT_TYPE))
-               {
-                       const gchar *content_type;
-
-                       content_type = g_file_info_get_attribute_string (info, 
G_FILE_ATTRIBUTE_STANDARD_CONTENT_TYPE);
+               const gchar *content_type;
 
-                       set_content_type (doc, content_type);
-               }
-
-               if (g_file_info_has_attribute (info, G_FILE_ATTRIBUTE_ACCESS_CAN_WRITE))
-               {
-                       gboolean read_only;
-
-                       read_only = !g_file_info_get_attribute_boolean (info, 
G_FILE_ATTRIBUTE_ACCESS_CAN_WRITE);
-
-                       set_readonly (doc, read_only);
-               }
+               content_type = g_file_info_get_attribute_string (info, 
G_FILE_ATTRIBUTE_STANDARD_CONTENT_TYPE);
 
-               g_object_unref (info);
+               set_content_type (doc, content_type);
        }
 
+       g_clear_object (&info);
+
        /* Async operation finished. */
        g_object_unref (doc);
 }
@@ -1270,8 +1269,6 @@ gedit_document_loaded_real (GeditDocument *doc)
 
        g_get_current_time (&priv->time_of_last_save_or_load);
 
-       set_readonly (doc, FALSE);
-
        set_content_type (doc, NULL);
 
        location = gtk_source_file_get_location (priv->file);
@@ -1331,8 +1328,6 @@ saved_query_info_cb (GFile         *location,
 
        priv->create = FALSE;
 
-       set_readonly (doc, FALSE);
-
        gtk_text_buffer_set_modified (GTK_TEXT_BUFFER (doc), FALSE);
 
        save_encoding_metadata (doc);
@@ -1410,42 +1405,6 @@ gedit_document_is_local (GeditDocument *doc)
        return g_file_has_uri_scheme (location, "file");
 }
 
-void
-_gedit_document_check_can_write_file (GeditDocument *doc)
-{
-       GeditDocumentPrivate *priv;
-       GFile *location;
-       GFileInfo *info;
-
-       g_return_if_fail (GEDIT_IS_DOCUMENT (doc));
-
-       priv = gedit_document_get_instance_private (doc);
-
-       location = gtk_source_file_get_location (priv->file);
-
-       if (location == NULL)
-       {
-               return;
-       }
-
-       info = g_file_query_info (location,
-                                 G_FILE_ATTRIBUTE_ACCESS_CAN_WRITE,
-                                 G_FILE_QUERY_INFO_NONE,
-                                 NULL, NULL);
-
-       if (info != NULL &&
-           g_file_info_has_attribute (info, G_FILE_ATTRIBUTE_ACCESS_CAN_WRITE))
-       {
-               gboolean read_only;
-
-               read_only = !g_file_info_get_attribute_boolean (info, G_FILE_ATTRIBUTE_ACCESS_CAN_WRITE);
-
-               set_readonly (doc, read_only);
-       }
-
-       g_clear_object (&info);
-}
-
 /**
  * gedit_document_get_deleted:
  * @doc: a #GeditDocument.
diff --git a/gedit/gedit-document.h b/gedit/gedit-document.h
index 1b531a2..6a129d3 100644
--- a/gedit/gedit-document.h
+++ b/gedit/gedit-document.h
@@ -75,6 +75,7 @@ void           gedit_document_set_content_type                (GeditDocument       *doc,
 
 gchar          *gedit_document_get_mime_type                   (GeditDocument       *doc);
 
+G_DEPRECATED_FOR (gtk_source_file_is_readonly)
 gboolean        gedit_document_get_readonly                    (GeditDocument       *doc);
 
 gboolean        gedit_document_is_untouched                    (GeditDocument       *doc);
diff --git a/gedit/gedit-tab.c b/gedit/gedit-tab.c
index 5f38484..d02bff2 100644
--- a/gedit/gedit-tab.c
+++ b/gedit/gedit-tab.c
@@ -1260,9 +1260,10 @@ view_focused_in (GtkWidget     *widget,
        {
                GtkSourceFile *file;
 
-               _gedit_document_check_can_write_file (doc);
-
                file = gedit_document_get_file (doc);
+
+               gtk_source_file_is_readonly (file);
+
                if (gtk_source_file_is_externally_modified (file))
                {
                        gedit_tab_set_state (tab, GEDIT_TAB_STATE_EXTERNALLY_MODIFIED_NOTIFICATION);