[gnome-todo] unscheduled-tasks: add plugin to manage unscheduled tasks

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

commit f64638ed3221d9b6dfcf51fb1756cc78aaad9ba2
Author: Georges Basile Stavracas Neto <georges stavracas gmail com>
Date:   Fri Jun 17 16:20:09 2016 -0300

    unscheduled-tasks: add plugin to manage unscheduled tasks

 configure.ac                                       |    4 +-
 plugins/Makefile.am                                |    5 +
 plugins/unscheduled-panel/Makefile.am              |    8 ++
 .../unscheduled-panel/unscheduled-panel.plugin.in  |   13 +++
 .../unscheduled-panel/__init__.py                  |  114 ++++++++++++++++++++
 5 files changed, 143 insertions(+), 1 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 415a4b2..7914220 100644
--- a/configure.ac
+++ b/configure.ac
@@ -88,6 +88,7 @@ dnl Plugins
 dnl ================================================================
 GNOME_TODO_ADD_PLUGIN([eds], [Evolution-Data-Server], [yes])
 GNOME_TODO_ADD_PLUGIN([score], [Score], [yes])
+GNOME_TODO_ADD_PLUGIN([unscheduled-panel], [Unscheduled Tasks Panel], [yes])
 
 AC_CONFIG_FILES([
       Makefile
@@ -117,7 +118,8 @@ echo "
         release:       ${ax_is_release}
 
     Plugins:
-        Score:         ${enable_score_plugin}
+        Score.................... ${enable_score_plugin}
+        Unscheduled panel........ ${enable_unscheduled_panel_plugin}
 
         Now type 'make' to build $PACKAGE
 "
diff --git a/plugins/Makefile.am b/plugins/Makefile.am
index 2e9957e..e7f5b89 100644
--- a/plugins/Makefile.am
+++ b/plugins/Makefile.am
@@ -4,4 +4,9 @@ if BUILD_SCORE_PLUGIN
 SUBDIRS += score
 endif
 
+if BUILD_UNSCHEDULED_PANEL_PLUGIN
+SUBDIRS += unscheduled-panel
+endif
+
+
 MAINTAINERCLEANFILES = Makefile.in
diff --git a/plugins/unscheduled-panel/Makefile.am b/plugins/unscheduled-panel/Makefile.am
new file mode 100644
index 0000000..6f6e1e1
--- /dev/null
+++ b/plugins/unscheduled-panel/Makefile.am
@@ -0,0 +1,8 @@
+include $(top_srcdir)/common.am
+
+EXTRA_DIST = $(plugin_DATA)
+
+score_plugindir = $(plugindir)/unscheduled-panel
+score_plugin_DATA = unscheduled-panel.plugin
+nobase_score_plugin_DATA =  \
+       unscheduled-panel/__init__.py
diff --git a/plugins/unscheduled-panel/unscheduled-panel.plugin.in 
b/plugins/unscheduled-panel/unscheduled-panel.plugin.in
new file mode 100644
index 0000000..a72c7c6
--- /dev/null
+++ b/plugins/unscheduled-panel/unscheduled-panel.plugin.in
@@ -0,0 +1,13 @@
+[Plugin]
+Name = Unscheduled Panel
+Module = unscheduled-panel
+Description = Adds a panel to show unscheduled tasks
+Version = @VERSION@
+Authors = Georges Basile Stavracas Neto <gbsneto gnome org>
+Copyright = Copyleft © The To Do maintainers
+Website = https://wiki.gnome.org/Apps/Todo
+Builtin = false
+Hidden = false
+License = GPL
+Loader = python3
+Depends =
diff --git a/plugins/unscheduled-panel/unscheduled-panel/__init__.py 
b/plugins/unscheduled-panel/unscheduled-panel/__init__.py
new file mode 100644
index 0000000..667f538
--- /dev/null
+++ b/plugins/unscheduled-panel/unscheduled-panel/__init__.py
@@ -0,0 +1,114 @@
+#!/usr/bin/env python3
+
+# __init__.py
+#
+# Copyright (C) 2016 Georges Basile Stavracas Neto <georges stavracas gmail 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/>.
+
+import gi
+
+gi.require_version('Gtd',  '1.0')
+gi.require_version('Peas', '1.0')
+
+from gi.repository import Gio, GLib, GObject, Gtd, Gtk, Peas
+
+from gettext import gettext as _
+
+
+class UnscheduledPanel(Gtk.Box, Gtd.Panel):
+
+    menu = GObject.Property(type=Gio.Menu, default=None)
+    name = GObject.Property(type=str, default=_("unscheduled-panel"))
+    title = GObject.Property(type=str, default=_("Unscheduled"))
+
+    def __init__(self):
+        Gtk.Box.__init__(self)
+
+        manager = Gtd.Manager.get_default()
+        manager.connect('list-added', self._count_tasks)
+        manager.connect('list-changed', self._count_tasks)
+        manager.connect('list-removed', self._count_tasks)
+
+        self.task_counter = 0
+        self.tasklist = Gtd.TaskList()
+
+        self.view = Gtd.TaskListView(hexpand=True,
+                                     vexpand=True)
+        self.view.set_show_list_name(True)
+        self.view.set_task_list(self.tasklist)
+
+        self.add(self.view)
+        self.show_all()
+
+        self._count_tasks()
+
+    def _count_tasks(self, unused_0=None, unused_1=None):
+
+        previous_task_counter = self.task_counter
+        self.task_counter = 0
+
+        manager = Gtd.Manager.get_default()
+        current_tasks = self.tasklist.get_tasks()
+
+        for tasklist in manager.get_task_lists():
+            for task in tasklist.get_tasks():
+                if not task in current_tasks and task.get_due_date() is None:
+                    self.tasklist.save_task(task)
+                    self.task_counter += 1
+
+        if previous_task_counter == self.task_counter:
+            self.notify("title")
+
+    def do_get_header_widgets(self):
+        return None
+
+    def do_get_menu(self):
+        return None
+
+    def do_get_panel_name(self):
+        return "unscheduled-panel"
+
+    def do_get_panel_title(self):
+        if self.task_counter == 0:
+            return _("Unscheduled")
+        else:
+            return _("Unscheduled (%d)" % self.task_counter)
+
+class UnscheduledPanelPlugin(GObject.Object, Gtd.Activatable):
+
+    preferences_panel = GObject.Property(type=Gtk.Widget, default=None)
+
+    def __init__(self):
+        GObject.Object.__init__(self)
+
+        self.panel = UnscheduledPanel()
+
+    def do_activate(self):
+        pass
+
+    def do_deactivate(self):
+        pass
+
+    def do_get_header_widgets(self):
+        return None
+
+    def do_get_panels(self):
+        return [self.panel]
+
+    def do_get_preferences_panel(self):
+        return None
+
+    def do_get_providers(self):
+        return None