[sysprof] libsysprof-ui: add empty state for timing data

[Christian Hergert <chergert src gnome org>]

commit e3245c3c3bc792a9e95af35c216725d591e100ae
Author: Christian Hergert <chergert redhat com>
Date:   Wed May 15 19:34:54 2019 -0700

    libsysprof-ui: add empty state for timing data

 src/libsysprof-ui/sysprof-capture-view.c   |  17 ++--
 src/libsysprof-ui/sysprof-marks-view.c     |   7 ++
 src/libsysprof-ui/ui/sysprof-marks-view.ui | 133 ++++++++++++++++-------------
 3 files changed, 90 insertions(+), 67 deletions(-)
---
diff --git a/src/libsysprof-ui/sysprof-capture-view.c b/src/libsysprof-ui/sysprof-capture-view.c
index 9bc4097..39a447a 100644
--- a/src/libsysprof-ui/sysprof-capture-view.c
+++ b/src/libsysprof-ui/sysprof-capture-view.c
@@ -434,16 +434,13 @@ sysprof_capture_view_load_scan_cb (GObject      *object,
   if (priv->features.has_counters || priv->features.has_marks)
     sysprof_visualizer_view_set_reader (priv->visualizer_view, state->reader);
 
-  if (priv->features.has_marks)
-    {
-      state->n_active++;
-      sysprof_marks_view_load_async (priv->marks_view,
-                                     state->reader,
-                                     state->selection,
-                                     g_task_get_cancellable (task),
-                                     sysprof_capture_view_load_marks_cb,
-                                     g_object_ref (task));
-    }
+  state->n_active++;
+  sysprof_marks_view_load_async (priv->marks_view,
+                                 state->reader,
+                                 state->selection,
+                                 g_task_get_cancellable (task),
+                                 sysprof_capture_view_load_marks_cb,
+                                 g_object_ref (task));
 
   sysprof_details_view_set_reader (priv->details_view, priv->reader);
 
diff --git a/src/libsysprof-ui/sysprof-marks-view.c b/src/libsysprof-ui/sysprof-marks-view.c
index 1e720d1..0175d9d 100644
--- a/src/libsysprof-ui/sysprof-marks-view.c
+++ b/src/libsysprof-ui/sysprof-marks-view.c
@@ -39,6 +39,7 @@ typedef struct
   GtkTreeView                 *tree_view;
   GtkTreeViewColumn           *duration_column;
   SysprofCellRendererDuration *duration_cell;
+  GtkStack                    *stack;
 } SysprofMarksViewPrivate;
 
 enum {
@@ -216,6 +217,7 @@ sysprof_marks_view_class_init (SysprofMarksViewClass *klass)
   gtk_widget_class_bind_template_child_private (widget_class, SysprofMarksView, tree_view);
   gtk_widget_class_bind_template_child_private (widget_class, SysprofMarksView, duration_cell);
   gtk_widget_class_bind_template_child_private (widget_class, SysprofMarksView, duration_column);
+  gtk_widget_class_bind_template_child_private (widget_class, SysprofMarksView, stack);
 
   properties [PROP_ZOOM_MANAGER] =
     g_param_spec_object ("zoom-manager", NULL, NULL,
@@ -291,6 +293,11 @@ sysprof_marks_view_load_cb (GObject      *object,
 
   gtk_tree_view_set_model (priv->tree_view, GTK_TREE_MODEL (model));
 
+  if (gtk_tree_model_iter_n_children (GTK_TREE_MODEL (model), NULL) == 0)
+    gtk_stack_set_visible_child_name (priv->stack, "empty-state");
+  else
+    gtk_stack_set_visible_child_name (priv->stack, "marks");
+
   g_task_return_boolean (task, TRUE);
 }
 
diff --git a/src/libsysprof-ui/ui/sysprof-marks-view.ui b/src/libsysprof-ui/ui/sysprof-marks-view.ui
index 3a15685..06fafcb 100644
--- a/src/libsysprof-ui/ui/sysprof-marks-view.ui
+++ b/src/libsysprof-ui/ui/sysprof-marks-view.ui
@@ -2,82 +2,101 @@
 <interface>
   <template class="SysprofMarksView" parent="GtkBin">
     <child>
-      <object class="GtkScrolledWindow" id="scroller">
+      <object class="GtkStack" id="stack">
         <property name="visible">true</property>
         <child>
-          <object class="GtkTreeView" id="tree_view">
-            <property name="headers-visible">false</property>
-            <property name="enable-grid-lines">horizontal</property>
+          <object class="GtkScrolledWindow" id="scroller">
             <property name="visible">true</property>
             <child>
-              <object class="GtkTreeViewColumn">
-                <property name="title" translatable="yes">Group</property>
-                <property name="resizable">true</property>
-                <property name="expand">false</property>
-                <property name="visible">false</property>
+              <object class="GtkTreeView" id="tree_view">
+                <property name="headers-visible">false</property>
+                <property name="enable-grid-lines">horizontal</property>
+                <property name="visible">true</property>
                 <child>
-                  <object class="GtkCellRendererText" id="text_cell">
-                    <property name="xalign">0</property>
+                  <object class="GtkTreeViewColumn">
+                    <property name="title" translatable="yes">Group</property>
+                    <property name="resizable">true</property>
+                    <property name="expand">false</property>
+                    <property name="visible">false</property>
+                    <child>
+                      <object class="GtkCellRendererText" id="text_cell">
+                        <property name="xalign">0</property>
+                      </object>
+                      <attributes>
+                        <attribute name="text">0</attribute>
+                      </attributes>
+                    </child>
                   </object>
-                  <attributes>
-                    <attribute name="text">0</attribute>
-                  </attributes>
                 </child>
-              </object>
-            </child>
-            <child>
-              <object class="GtkTreeViewColumn">
-                <property name="title" translatable="yes">Name</property>
-                <property name="resizable">true</property>
-                <property name="expand">false</property>
-                <property name="visible">false</property>
                 <child>
-                  <object class="GtkCellRendererText">
-                    <property name="xalign">0</property>
+                  <object class="GtkTreeViewColumn">
+                    <property name="title" translatable="yes">Name</property>
+                    <property name="resizable">true</property>
+                    <property name="expand">false</property>
+                    <property name="visible">false</property>
+                    <child>
+                      <object class="GtkCellRendererText">
+                        <property name="xalign">0</property>
+                      </object>
+                      <attributes>
+                        <attribute name="text">1</attribute>
+                      </attributes>
+                    </child>
                   </object>
-                  <attributes>
-                    <attribute name="text">1</attribute>
-                  </attributes>
                 </child>
-              </object>
-            </child>
-            <child>
-              <object class="GtkTreeViewColumn" id="elapsed_column">
-                <property name="title" translatable="yes">Elapsed</property>
-                <property name="resizable">true</property>
-                <property name="expand">false</property>
-                <property name="visible">false</property>
                 <child>
-                  <object class="GtkCellRendererText">
-                    <property name="xalign">0</property>
+                  <object class="GtkTreeViewColumn" id="elapsed_column">
+                    <property name="title" translatable="yes">Elapsed</property>
+                    <property name="resizable">true</property>
+                    <property name="expand">false</property>
+                    <property name="visible">false</property>
+                    <child>
+                      <object class="GtkCellRendererText">
+                        <property name="xalign">0</property>
+                      </object>
+                      <attributes>
+                        <attribute name="text">4</attribute>
+                      </attributes>
+                    </child>
                   </object>
-                  <attributes>
-                    <attribute name="text">4</attribute>
-                  </attributes>
                 </child>
-              </object>
-            </child>
-            <child>
-              <object class="GtkTreeViewColumn" id="duration_column">
-                <property name="title" translatable="yes">Duration</property>
-                <property name="expand">true</property>
                 <child>
-                  <object class="SysprofCellRendererDuration" id="duration_cell">
-                    <property name="xalign">0</property>
-                    <property name="ypad">1</property>
-                  </object>
-                  <attributes>
-                    <attribute name="text">1</attribute>
-                    <attribute name="begin-time">2</attribute>
-                    <attribute name="end-time">3</attribute>
-                  </attributes>
-                  <cell-packing>
+                  <object class="GtkTreeViewColumn" id="duration_column">
+                    <property name="title" translatable="yes">Duration</property>
                     <property name="expand">true</property>
-                  </cell-packing>
+                    <child>
+                      <object class="SysprofCellRendererDuration" id="duration_cell">
+                        <property name="xalign">0</property>
+                        <property name="ypad">1</property>
+                      </object>
+                      <attributes>
+                        <attribute name="text">1</attribute>
+                        <attribute name="begin-time">2</attribute>
+                        <attribute name="end-time">3</attribute>
+                      </attributes>
+                      <cell-packing>
+                        <property name="expand">true</property>
+                      </cell-packing>
+                    </child>
+                  </object>
                 </child>
               </object>
             </child>
           </object>
+          <packing>
+            <property name="name">marks</property>
+          </packing>
+        </child>
+        <child>
+          <object class="SysprofEmptyStateView">
+            <property name="icon-name">computer-fail-symbolic</property>
+            <property name="title" translatable="yes">No Timings Available</property>
+            <property name="subtitle" translatable="yes">No timing data was collected.</property>
+            <property name="visible">true</property>
+          </object>
+          <packing>
+            <property name="name">empty-state</property>
+          </packing>
         </child>
       </object>
     </child>