[gnome-todo/wip/gbsneto/subtasks] task-row: show completeness percentage of tasks with subtasks

[Georges Basile Stavracas Neto <gbsneto src gnome org>]

commit 314966ca48c8f88d8ce836410ea22a4e6f1eec8f
Author: Georges Basile Stavracas Neto <georges stavracas gmail com>
Date:   Fri Oct 21 00:21:21 2016 -0200

    task-row: show completeness percentage of tasks with subtasks

 data/ui/task-row.ui |   41 ++++++-----------------------------------
 src/gtd-task-row.c  |   28 ++++++++++++++++++++++++++++
 2 files changed, 34 insertions(+), 35 deletions(-)
---
diff --git a/data/ui/task-row.ui b/data/ui/task-row.ui
index 29b899f..deac6c9 100644
--- a/data/ui/task-row.ui
+++ b/data/ui/task-row.ui
@@ -112,43 +112,14 @@
                   </packing>
                 </child>
                 <child>
-                  <object class="GtkBox" id="task_extras_box">
-                    <property name="visible">False</property>
+                  <object class="GtkProgressBar" id="percent_progress">
+                    <property name="visible">True</property>
                     <property name="can_focus">False</property>
-                    <property name="halign">end</property>
                     <property name="valign">center</property>
-                    <property name="hexpand">True</property>
-                    <property name="spacing">6</property>
-                    <child>
-                      <object class="GtkButton" id="task_attachment_button">
-                        <property name="visible">True</property>
-                        <property name="can_focus">True</property>
-                        <property name="receives_default">True</property>
-                        <property name="relief">none</property>
-                        <child>
-                          <object class="GtkImage" id="task_attachment_button_image">
-                            <property name="visible">True</property>
-                            <property name="can_focus">False</property>
-                            <property name="icon_name">text-x-generic-symbolic</property>
-                          </object>
-                        </child>
-                      </object>
-                    </child>
-                    <child>
-                      <object class="GtkButton" id="task_alarm_button">
-                        <property name="visible">True</property>
-                        <property name="can_focus">True</property>
-                        <property name="receives_default">True</property>
-                        <property name="relief">none</property>
-                        <child>
-                          <object class="GtkImage" id="task_alarm_button_image">
-                            <property name="visible">True</property>
-                            <property name="can_focus">False</property>
-                            <property name="icon_name">alarm-symbolic</property>
-                          </object>
-                        </child>
-                      </object>
-                    </child>
+                    <property name="no-show-all">True</property>
+                    <style>
+                      <class name="dim-label"/>
+                    </style>
                   </object>
                 </child>
                 <child>
diff --git a/src/gtd-task-row.c b/src/gtd-task-row.c
index f2770ac..3a81811 100644
--- a/src/gtd-task-row.c
+++ b/src/gtd-task-row.c
@@ -38,6 +38,7 @@ struct _GtdTaskRow
   GtkStack                  *new_task_stack;
 
   /* task widgets */
+  GtkWidget                 *percent_progress;
   GtkEntry                  *title_entry;
   GtkLabel                  *task_date_label;
   GtkLabel                  *task_list_label;
@@ -273,6 +274,15 @@ depth_changed_cb (GtdTaskRow *self,
                                self->handle_subtasks ? 32 * gtd_task_get_depth (task) : 0);
 }
 
+static void
+complete_percentage_changed_cb (GtdTaskRow *self,
+                                GParamSpec *pspec,
+                                GtdTask    *task)
+{
+  gtk_progress_bar_set_fraction (GTK_PROGRESS_BAR (self->percent_progress),
+                                 gtd_task_get_complete_percentage (task));
+}
+
 static gboolean
 gtd_task_row__date_changed_binding (GBinding     *binding,
                                     const GValue *from_value,
@@ -480,6 +490,10 @@ gtd_task_row_dispose (GObject *object)
                                             self);
 
       g_signal_handlers_disconnect_by_func (task,
+                                            complete_percentage_changed_cb,
+                                            self);
+
+      g_signal_handlers_disconnect_by_func (task,
                                             gtd_task_row__priority_changed_cb,
                                             self);
     }
@@ -678,6 +692,7 @@ gtd_task_row_class_init (GtdTaskRowClass *klass)
   gtk_widget_class_bind_template_child (widget_class, GtdTaskRow, stack);
   gtk_widget_class_bind_template_child (widget_class, GtdTaskRow, new_task_entry);
   gtk_widget_class_bind_template_child (widget_class, GtdTaskRow, new_task_stack);
+  gtk_widget_class_bind_template_child (widget_class, GtdTaskRow, percent_progress);
   gtk_widget_class_bind_template_child (widget_class, GtdTaskRow, revealer);
   gtk_widget_class_bind_template_child (widget_class, GtdTaskRow, task_date_label);
   gtk_widget_class_bind_template_child (widget_class, GtdTaskRow, task_list_label);
@@ -822,6 +837,12 @@ gtd_task_row_set_task (GtdTaskRow *row,
                                   "visible",
                                   G_BINDING_INVERT_BOOLEAN | G_BINDING_SYNC_CREATE);
 
+          g_object_bind_property (task,
+                                  "has-subtasks",
+                                  row->percent_progress,
+                                  "visible",
+                                  G_BINDING_DEFAULT | G_BINDING_SYNC_CREATE);
+
           g_object_bind_property_full (task,
                                        "due-date",
                                        row->task_date_label,
@@ -853,6 +874,12 @@ gtd_task_row_set_task (GtdTaskRow *row,
                                     "notify::depth",
                                     G_CALLBACK (depth_changed_cb),
                                     row);
+
+          complete_percentage_changed_cb (row, NULL, task);
+          g_signal_connect_swapped (task,
+                                    "notify::complete-percentage",
+                                    G_CALLBACK (complete_percentage_changed_cb),
+                                    row);
         }
 
       g_object_notify (G_OBJECT (row), "task");
@@ -941,6 +968,7 @@ gtd_task_row_set_handle_subtasks (GtdTaskRow *self,
   self->handle_subtasks = handle_subtasks;
 
   gtk_widget_set_visible (self->dnd_box, handle_subtasks);
+  gtk_widget_set_visible (self->percent_progress, handle_subtasks && gtd_task_has_subtasks (self->task));
   depth_changed_cb (self, NULL, self->task);
 
   g_object_notify (G_OBJECT (self), "handle-subtasks");