[gnome-todo] score: add a plugin to show the daily score

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

commit 3da5e68f4a48414ac24c7117a7e98477b6d78b5c
Author: Georges Basile Stavracas Neto <georges stavracas gmail com>
Date:   Fri Jun 10 20:22:06 2016 -0300

    score: add a plugin to show the daily score

 configure.ac                    |    4 +
 plugins/Makefile.am             |    4 +
 plugins/score/Makefile.am       |    8 ++
 plugins/score/score.plugin.in   |   13 +++
 plugins/score/score/__init__.py |  171 +++++++++++++++++++++++++++++++++++++++
 5 files changed, 200 insertions(+), 0 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 1ccf804..415a4b2 100644
--- a/configure.ac
+++ b/configure.ac
@@ -87,6 +87,7 @@ dnl ================================================================
 dnl Plugins
 dnl ================================================================
 GNOME_TODO_ADD_PLUGIN([eds], [Evolution-Data-Server], [yes])
+GNOME_TODO_ADD_PLUGIN([score], [Score], [yes])
 
 AC_CONFIG_FILES([
       Makefile
@@ -115,5 +116,8 @@ echo "
         warning flags: ${GNOME_TODO_WARN_CFLAGS} ${GNOME_TODO_WARN_LDFLAGS}
         release:       ${ax_is_release}
 
+    Plugins:
+        Score:         ${enable_score_plugin}
+
         Now type 'make' to build $PACKAGE
 "
diff --git a/plugins/Makefile.am b/plugins/Makefile.am
index da699ff..2e9957e 100644
--- a/plugins/Makefile.am
+++ b/plugins/Makefile.am
@@ -1,3 +1,7 @@
 SUBDIRS = eds
 
+if BUILD_SCORE_PLUGIN
+SUBDIRS += score
+endif
+
 MAINTAINERCLEANFILES = Makefile.in
diff --git a/plugins/score/Makefile.am b/plugins/score/Makefile.am
new file mode 100644
index 0000000..f509afd
--- /dev/null
+++ b/plugins/score/Makefile.am
@@ -0,0 +1,8 @@
+include $(top_srcdir)/common.am
+
+EXTRA_DIST = $(plugin_DATA)
+
+score_plugindir = $(plugindir)/score
+score_plugin_DATA = score.plugin
+nobase_score_plugin_DATA =  \
+       score/__init__.py
diff --git a/plugins/score/score.plugin.in b/plugins/score/score.plugin.in
new file mode 100644
index 0000000..c735d89
--- /dev/null
+++ b/plugins/score/score.plugin.in
@@ -0,0 +1,13 @@
+[Plugin]
+Name = Score
+Module = score
+Description = A small score to measure your productivity
+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/score/score/__init__.py b/plugins/score/score/__init__.py
new file mode 100644
index 0000000..6bf7a94
--- /dev/null
+++ b/plugins/score/score/__init__.py
@@ -0,0 +1,171 @@
+#!/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 ScoreManager(GObject.Object):
+
+    score = GObject.Property(type=int, default=0)
+
+    __gsignals__ = {
+        'score-added': (GObject.SignalFlags.RUN_FIRST, None, (int, Gtd.Task,)),
+        'score-removed': (GObject.SignalFlags.RUN_FIRST, None, (int, Gtd.Task,))
+    }
+
+    def __init__(self):
+        GObject.Object.__init__(self)
+
+        manager = Gtd.Manager.get_default()
+
+        manager.connect('list-added', self._setup_list)
+
+        for tasklist in manager.get_task_lists():
+            self._setup_list(manager, tasklist)
+
+    def _setup_list(self, manager, tasklist):
+        tasklist.connect('task-added', self._task_added)
+        for task in tasklist.get_tasks():
+            task.connect('notify::complete', self._task_complete)
+
+    def _task_added(self, tasklist, task):
+        task.connect('notify::complete', self._task_complete)
+
+    def _task_complete(self, task, unused_data=None):
+        task_value = 10 + task.get_priority() * 5
+
+        if task.get_complete():
+            self.score = self.score + task_value
+            self.emit('score-added', self.score, task)
+        else:
+            self.score = self.score - task_value
+            self.emit('score-removed', self.score, task)
+
+class ScorePopover(Gtk.Popover):
+    def __init__(self, button, manager):
+        Gtk.Popover.__init__(self, relative_to=button)
+
+        button.set_popover(self)
+
+        self.manager = manager
+
+        self._setup_listbox()
+        self._setup_manager()
+
+    def _setup_listbox(self):
+        vbox = Gtk.Box(orientation=Gtk.Orientation.VERTICAL,
+                       spacing=6,
+                       border_width=12)
+        vbox.add(Gtk.Image.new_from_icon_name('face-embarrassed-symbolic',
+                                              Gtk.IconSize.DIALOG))
+        vbox.add(Gtk.Label(label=_("No task completed today")))
+        vbox.show_all()
+
+        self.listbox = Gtk.ListBox()
+        self.listbox.set_selection_mode(Gtk.SelectionMode.NONE)
+        self.listbox.set_placeholder(vbox)
+        self.listbox.get_style_context().add_class('background')
+
+        vbox = Gtk.Box(orientation=Gtk.Orientation.VERTICAL,
+                       spacing=6,
+                       border_width=18)
+        vbox.add(Gtk.Label(label='<b>' + _("Today") + '</b>',
+                           use_markup=True,
+                           hexpand=True,
+                           xalign=0))
+        vbox.add(self.listbox)
+        vbox.show_all()
+
+        self.add(vbox)
+
+    def _setup_manager(self):
+        self.manager.connect('score-added', self._score_added)
+        self.manager.connect('score-removed', self._score_removed)
+
+    def _score_added(self, manager, score, task):
+
+        row = Gtk.ListBoxRow(border_width=6)
+
+        row.add(Gtk.Label(label="<b>"+task.get_title()+"</b> completed",
+                          use_markup=True,
+                          hexpand=True,
+                          xalign=0))
+        row.show_all()
+
+        self.listbox.add(row)
+
+    def _score_removed(self, manager, score, task):
+
+        row = Gtk.ListBoxRow(border_width=6)
+
+        row.add(Gtk.Label(label="<b>"+task.get_title()+"</b> readded",
+                          use_markup=True,
+                          hexpand=True,
+                          xalign=0))
+        row.show_all()
+
+        self.listbox.add(row)
+
+class ScorePlugin(GObject.Object, Gtd.Activatable):
+
+    preferences_panel = GObject.Property(type=Gtk.Widget, default=None)
+
+    def __init__(self):
+        GObject.Object.__init__(self)
+        self.header_button = Gtk.MenuButton()
+        self.header_button.set_halign(Gtk.Align.END)
+        self.header_button.set_label('0')
+        self.header_button.show_all()
+
+        self.header_button.get_style_context().add_class('image-button')
+
+        self.manager = ScoreManager()
+        self.manager.connect('score-added', self._score_changed)
+        self.manager.connect('score-removed', self._score_changed)
+
+        self.popover = ScorePopover(self.header_button, self.manager)
+
+    def _score_changed(self, manager, score, task):
+        print(score)
+        self.header_button.set_label(str(score))
+
+    def do_activate(self):
+        pass
+
+    def do_deactivate(self):
+        pass
+
+    def do_get_header_widgets(self):
+        return [self.header_button]
+
+    def do_get_panels(self):
+        return None
+
+    def do_get_preferences_panel(self):
+        return None
+
+    def do_get_providers(self):
+        return None