[gnome-builder] GbDocument: add misc helper functions to document

[Christian Hergert <chergert src gnome org>]

commit 359a98f7cea09d9adac9601f2b022292f2688540
Author: Christian Hergert <christian hergert me>
Date:   Fri Dec 12 16:27:32 2014 -0800

    GbDocument: add misc helper functions to document
    
    Adds get_mtime(), get_read_only(), and is_untitled() interface functions.

 src/documents/gb-document.c |   56 +++++++++++++++++++++++++++++++++++++++++++
 src/documents/gb-document.h |   34 ++++++++++++++++----------
 2 files changed, 77 insertions(+), 13 deletions(-)
---
diff --git a/src/documents/gb-document.c b/src/documents/gb-document.c
index 7d3b42b..013b117 100644
--- a/src/documents/gb-document.c
+++ b/src/documents/gb-document.c
@@ -26,6 +26,7 @@ G_DEFINE_INTERFACE (GbDocument, gb_document, G_TYPE_OBJECT)
 enum {
   PROP_0,
   PROP_MODIFIED,
+  PROP_READ_ONLY,
   PROP_TITLE,
   LAST_PROP
 };
@@ -39,6 +40,43 @@ static GParamSpec *gParamSpecs [LAST_PROP];
 static guint       gSignals [LAST_SIGNAL];
 
 gboolean
+gb_document_is_untitled (GbDocument *document)
+{
+  g_return_val_if_fail (GB_IS_DOCUMENT (document), FALSE);
+
+  if (GB_DOCUMENT_GET_INTERFACE (document)->is_untitled)
+    return GB_DOCUMENT_GET_INTERFACE (document)->is_untitled (document);
+  return FALSE;
+}
+
+gboolean
+gb_document_get_mtime (GbDocument *document,
+                       GTimeVal   *mtime)
+{
+  g_return_val_if_fail (GB_IS_DOCUMENT (document), FALSE);
+  g_return_val_if_fail (mtime, FALSE);
+
+  if (GB_DOCUMENT_GET_INTERFACE (document)->get_mtime)
+    return GB_DOCUMENT_GET_INTERFACE (document)->get_mtime (document, mtime);
+  return FALSE;
+}
+
+glong
+_gb_document_get_seconds_since_last_save_or_load (GbDocument *document)
+{
+  GTimeVal now;
+  GTimeVal tv;
+
+  if (!gb_document_get_mtime (document, &tv))
+    return 0;
+
+  g_get_current_time (&now);
+
+  /* not totally precise, but whatever */
+  return now.tv_sec - tv.tv_sec;
+}
+
+gboolean
 gb_document_get_modified (GbDocument *document)
 {
   g_return_val_if_fail (GB_IS_DOCUMENT (document), FALSE);
@@ -46,6 +84,16 @@ gb_document_get_modified (GbDocument *document)
   return GB_DOCUMENT_GET_INTERFACE (document)->get_modified (document);
 }
 
+gboolean
+gb_document_get_read_only (GbDocument *document)
+{
+  g_return_val_if_fail (GB_IS_DOCUMENT (document), FALSE);
+
+  if (GB_DOCUMENT_GET_INTERFACE (document)->get_read_only)
+    return GB_DOCUMENT_GET_INTERFACE (document)->get_read_only (document);
+  return FALSE;
+}
+
 const gchar *
 gb_document_get_title (GbDocument *document)
 {
@@ -108,6 +156,14 @@ gb_document_default_init (GbDocumentInterface *iface)
                          (G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
   g_object_interface_install_property (iface, gParamSpecs [PROP_TITLE]);
 
+  gParamSpecs [PROP_READ_ONLY] =
+    g_param_spec_boolean ("read-only",
+                         _("Read Only"),
+                         _("If the document is read only."),
+                         FALSE,
+                         (G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
+  g_object_interface_install_property (iface, gParamSpecs [PROP_READ_ONLY]);
+
   gSignals [CREATE_VIEW] =
     g_signal_new ("create-view",
                   GB_TYPE_DOCUMENT,
diff --git a/src/documents/gb-document.h b/src/documents/gb-document.h
index c6974bc..55886aa 100644
--- a/src/documents/gb-document.h
+++ b/src/documents/gb-document.h
@@ -35,21 +35,29 @@ struct _GbDocumentInterface
 {
   GTypeInterface parent;
 
-  gboolean     (*get_modified) (GbDocument *document);
-  const gchar *(*get_title)    (GbDocument *document);
-  GtkWidget   *(*create_view)  (GbDocument *document);
-  void         (*save)         (GbDocument *document);
-  void         (*save_as)      (GbDocument *document,
-                                GtkWidget  *toplevel);
+  GtkWidget   *(*create_view)   (GbDocument *document);
+  gboolean     (*get_modified)  (GbDocument *document);
+  gboolean     (*get_mtime)     (GbDocument *document,
+                                 GTimeVal   *mtime);
+  gboolean     (*get_read_only) (GbDocument *document);
+  const gchar *(*get_title)     (GbDocument *document);
+  gboolean     (*is_untitled)   (GbDocument *document);
+  void         (*save)          (GbDocument *document);
+  void         (*save_as)       (GbDocument *document,
+                                 GtkWidget  *toplevel);
 };
 
-GType        gb_document_get_type     (void) G_GNUC_CONST;
-gboolean     gb_document_get_modified (GbDocument *document);
-const gchar *gb_document_get_title    (GbDocument *document);
-GtkWidget   *gb_document_create_view  (GbDocument *document);
-void         gb_document_save         (GbDocument *document);
-void         gb_document_save_as      (GbDocument *document,
-                                       GtkWidget  *toplevel);
+GtkWidget   *gb_document_create_view   (GbDocument *document);
+gboolean     gb_document_get_modified  (GbDocument *document);
+gboolean     gb_document_get_mtime     (GbDocument *document,
+                                        GTimeVal   *mtime);
+gboolean     gb_document_get_read_only (GbDocument *document);
+const gchar *gb_document_get_title     (GbDocument *document);
+GType        gb_document_get_type      (void);
+gboolean     gb_document_is_untitled   (GbDocument *document);
+void         gb_document_save          (GbDocument *document);
+void         gb_document_save_as       (GbDocument *document,
+                                        GtkWidget  *toplevel);
 
 G_END_DECLS