From f416471f3fde1e85545f10a5ff346e4590095609 Mon Sep 17 00:00:00 2001
From: Christian Hergert <chergert@redhat.com>
Date: Wed, 28 Jun 2023 15:13:28 -0700
Subject: [PATCH] libsysprof-gtk: add tracks model to session

The goal here is for the session to decode information from the document
and then determine what tracks can be displayed. This is what an "aid"
used to do in libsysprof-ui. I think we can just centralize it now that
we have a lot more abstractions in SysprofDocument.
---
 src/libsysprof-gtk/sysprof-session.c | 33 +++++++++++++++++++++++++++-
 src/libsysprof-gtk/sysprof-session.h |  2 ++
 2 files changed, 34 insertions(+), 1 deletion(-)

diff --git a/src/libsysprof-gtk/sysprof-session.c b/src/libsysprof-gtk/sysprof-session.c
index 334b6de0..b2586eea 100644
--- a/src/libsysprof-gtk/sysprof-session.c
+++ b/src/libsysprof-gtk/sysprof-session.c
@@ -21,6 +21,7 @@
 #include "config.h"
 
 #include "sysprof-session.h"
+#include "sysprof-track.h"
 #include "sysprof-value-axis.h"
 
 struct _SysprofSession
@@ -30,6 +31,8 @@ struct _SysprofSession
   SysprofDocument *document;
   GtkEveryFilter  *filter;
 
+  GListStore      *tracks;
+
   SysprofAxis     *visible_time_axis;
   SysprofAxis     *selected_time_axis;
 
@@ -42,8 +45,9 @@ enum {
   PROP_DOCUMENT,
   PROP_FILTER,
   PROP_SELECTED_TIME,
-  PROP_VISIBLE_TIME,
   PROP_SELECTED_TIME_AXIS,
+  PROP_TRACKS,
+  PROP_VISIBLE_TIME,
   PROP_VISIBLE_TIME_AXIS,
   N_PROPS
 };
@@ -88,6 +92,7 @@ sysprof_session_dispose (GObject *object)
 {
   SysprofSession *self = (SysprofSession *)object;
 
+  g_clear_object (&self->tracks);
   g_clear_object (&self->visible_time_axis);
   g_clear_object (&self->selected_time_axis);
   g_clear_object (&self->document);
@@ -130,6 +135,10 @@ sysprof_session_get_property (GObject    *object,
       g_value_set_object (value, sysprof_session_get_visible_time_axis (self));
       break;
 
+    case PROP_TRACKS:
+      g_value_take_object (value, sysprof_session_list_tracks (self));
+      break;
+
     default:
       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
     }
@@ -193,6 +202,11 @@ sysprof_session_class_init (SysprofSessionClass *klass)
                          SYSPROF_TYPE_AXIS,
                          (G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
 
+  properties[PROP_TRACKS] =
+    g_param_spec_object ("tracks", NULL, NULL,
+                         G_TYPE_LIST_MODEL,
+                         (G_PARAM_READABLE | G_PARAM_EXPLICIT_NOTIFY | G_PARAM_STATIC_STRINGS));
+
   g_object_class_install_properties (object_class, N_PROPS, properties);
 }
 
@@ -202,6 +216,7 @@ sysprof_session_init (SysprofSession *self)
   self->filter = gtk_every_filter_new ();
   self->selected_time_axis = sysprof_value_axis_new (0, 0);
   self->visible_time_axis = sysprof_value_axis_new (0, 0);
+  self->tracks = g_list_store_new (SYSPROF_TYPE_TRACK);
 }
 
 SysprofSession *
@@ -324,3 +339,19 @@ sysprof_session_get_visible_time_axis (SysprofSession *self)
 
   return self->visible_time_axis;
 }
+
+/**
+ * sysprof_session_list_tracks:
+ * @self: a #SysprofSession
+ *
+ * Gets a list of #SysprofTrack to be displayed in the session.
+ *
+ * Returns: (transfer full): a #GListModel of #SysprofTrack
+ */
+GListModel *
+sysprof_session_list_tracks (SysprofSession *self)
+{
+  g_return_val_if_fail (SYSPROF_IS_SESSION (self), NULL);
+
+  return g_object_ref (G_LIST_MODEL (self->tracks));
+}
diff --git a/src/libsysprof-gtk/sysprof-session.h b/src/libsysprof-gtk/sysprof-session.h
index 9ede0bbf..2a3ea927 100644
--- a/src/libsysprof-gtk/sysprof-session.h
+++ b/src/libsysprof-gtk/sysprof-session.h
@@ -51,5 +51,7 @@ SysprofAxis           *sysprof_session_get_selected_time_axis (SysprofSession
 SYSPROF_AVAILABLE_IN_ALL
 void                   sysprof_session_select_time            (SysprofSession        *self,
                                                                const SysprofTimeSpan *time_span);
+SYSPROF_AVAILABLE_IN_ALL
+GListModel            *sysprof_session_list_tracks            (SysprofSession        *self);
 
 G_END_DECLS