libsysprof-gtk: start on SysprofTracksView

This is eventually going to contain the list of tracks we have at the
top of the analysis view.

src/libsysprof-gtk/sysprof-tracks-view.c

@@ -0,0 +1,159 @@
+/* sysprof-tracks-view.c
+ *
+ * Copyright 2023 Christian Hergert <chergert@redhat.com>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ */
+
+#include "config.h"
+
+#include "sysprof-css-private.h"
+#include "sysprof-track-view.h"
+#include "sysprof-tracks-view.h"
+
+struct _SysprofTracksView
+{
+  GtkWidget       parent_instance;
+  SysprofSession *session;
+};
+
+enum {
+  PROP_0,
+  PROP_SESSION,
+  N_PROPS
+};
+
+G_DEFINE_FINAL_TYPE (SysprofTracksView, sysprof_tracks_view, GTK_TYPE_WIDGET)
+
+static GParamSpec *properties [N_PROPS];
+
+static void
+sysprof_tracks_view_dispose (GObject *object)
+{
+  SysprofTracksView *self = (SysprofTracksView *)object;
+  GtkWidget *child;
+
+  g_clear_object (&self->session);
+
+  gtk_widget_dispose_template (GTK_WIDGET (self), SYSPROF_TYPE_TRACKS_VIEW);
+
+  while ((child = gtk_widget_get_first_child (GTK_WIDGET (self))))
+    gtk_widget_unparent (child);
+
+  G_OBJECT_CLASS (sysprof_tracks_view_parent_class)->dispose (object);
+}
+
+static void
+sysprof_tracks_view_get_property (GObject    *object,
+                                  guint       prop_id,
+                                  GValue     *value,
+                                  GParamSpec *pspec)
+{
+  SysprofTracksView *self = SYSPROF_TRACKS_VIEW (object);
+
+  switch (prop_id)
+    {
+    case PROP_SESSION:
+      g_value_set_object (value, sysprof_tracks_view_get_session (self));
+      break;
+
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+    }
+}
+
+static void
+sysprof_tracks_view_set_property (GObject      *object,
+                                  guint         prop_id,
+                                  const GValue *value,
+                                  GParamSpec   *pspec)
+{
+  SysprofTracksView *self = SYSPROF_TRACKS_VIEW (object);
+
+  switch (prop_id)
+    {
+    case PROP_SESSION:
+      sysprof_tracks_view_set_session (self, g_value_get_object (value));
+      break;
+
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+    }
+}
+
+static void
+sysprof_tracks_view_class_init (SysprofTracksViewClass *klass)
+{
+  GObjectClass *object_class = G_OBJECT_CLASS (klass);
+  GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
+
+  object_class->dispose = sysprof_tracks_view_dispose;
+  object_class->get_property = sysprof_tracks_view_get_property;
+  object_class->set_property = sysprof_tracks_view_set_property;
+
+  properties[PROP_SESSION] =
+    g_param_spec_object ("session", NULL, NULL,
+                         SYSPROF_TYPE_SESSION,
+                         (G_PARAM_READWRITE | G_PARAM_EXPLICIT_NOTIFY | G_PARAM_STATIC_STRINGS));
+
+  g_object_class_install_properties (object_class, N_PROPS, properties);
+
+  gtk_widget_class_set_template_from_resource (widget_class, "/libsysprof-gtk/sysprof-tracks-view.ui");
+  gtk_widget_class_set_layout_manager_type (widget_class, GTK_TYPE_BIN_LAYOUT);
+
+  g_type_ensure (SYSPROF_TYPE_TRACK_VIEW);
+}
+
+static void
+sysprof_tracks_view_init (SysprofTracksView *self)
+{
+  _sysprof_css_init ();
+
+  gtk_widget_init_template (GTK_WIDGET (self));
+}
+
+GtkWidget *
+sysprof_tracks_view_new (void)
+{
+  return g_object_new (SYSPROF_TYPE_TRACKS_VIEW, NULL);
+}
+
+/**
+ * sysprof_tracks_view_get_session:
+ * @self: a #SysprofTracksView
+ *
+ * Gets the session for the tracks.
+ *
+ * Returns: (transfer none) (nullable): a #SysprofSession or %NULL
+ */
+SysprofSession *
+sysprof_tracks_view_get_session (SysprofTracksView *self)
+{
+  g_return_val_if_fail (SYSPROF_IS_TRACKS_VIEW (self), NULL);
+
+  return self->session;
+}
+
+void
+sysprof_tracks_view_set_session (SysprofTracksView *self,
+                                 SysprofSession    *session)
+{
+  g_return_if_fail (SYSPROF_IS_TRACKS_VIEW (self));
+  g_return_if_fail (!session || SYSPROF_IS_SESSION (session));
+
+  if (g_set_object (&self->session, session))
+    g_object_notify_by_pspec (G_OBJECT (self), properties[PROP_SESSION]);
+}