[PATCH 2/2] Initialize displayed time to the system time then keep it updating

[Vratislav Podzimek <vpodzime@xxxxxxxxxx>]

Even after manual modification by the user we want to keep updating
the displayed time to the newly set system time.
---
 pyanaconda/ui/gui/spokes/datetime_spoke.py |   56 ++++++++++++++++++++++++++++
 1 files changed, 56 insertions(+), 0 deletions(-)

diff --git a/pyanaconda/ui/gui/spokes/datetime_spoke.py b/pyanaconda/ui/gui/spokes/datetime_spoke.py
index ee2f21b..2edde8b 100644
--- a/pyanaconda/ui/gui/spokes/datetime_spoke.py
+++ b/pyanaconda/ui/gui/spokes/datetime_spoke.py
@@ -31,6 +31,7 @@ from pyanaconda.ui.gui.categories.localization import LocalizationCategory
 
 from pyanaconda import localization
 import datetime
+import time
 
 __all__ = ["DatetimeSpoke"]
 
@@ -102,6 +103,13 @@ class DatetimeSpoke(NormalSpoke):
         if self._radioButton24h.get_active():
             self._set_amPm_part_sensitive(False)
 
+        self._hoursLabel = self.builder.get_object("hoursLabel")
+        self._minutesLabel = self.builder.get_object("minutesLabel")
+
+        self._update_time()
+        self._update_time_timer_id = GLib.timeout_add_seconds(1, self._update_time)
+        self._start_updating_timer_id = None
+
         self._tzmap.set_timezone("Europe/Prague")
 
         #XXX:remove before pushing!
@@ -197,7 +205,45 @@ class DatetimeSpoke(NormalSpoke):
 
         return (hours + correction) % 24
 
+    def _update_time(self):
+        now = time.localtime()
+        if self._radioButton24h.get_active():
+            self._hoursLabel.set_text("%0.2d" % now.tm_hour)
+        else:
+            hours, amPm = self._to_amPm(now.tm_hour)
+            self._hoursLabel.set_text("%0.2d" % hours)
+            amPm_label = self.builder.get_object("amPmLabel")
+
+        self._minutesLabel.set_text("%0.2d" % now.tm_min)
+
+        #GLib's timer is driven by the return value of the function.
+        #It runs the fuction periodically while the returned value
+        #is True.
+        return True
+
+    def _save_system_time(self):
+        #TODO: save system time here
+        self._update_time_timer_id = GLib.timeout_add_seconds(1, self._update_time)
+
+        #run only once (after first 2 seconds)
+        return False
+
+    def _stop_and_maybe_start_time_updating(self):
+        #stop time updating
+        GLib.source_remove(self._update_time_timer_id)
+
+        #stop previous 2 seconds timer (see below)
+        if self._start_updating_timer_id:
+            GLib.source_remove(self._start_updating_timer_id)
+
+        #give a user chance to change time and after 2 seconds of
+        #inactivity save it as system time and start time updating
+        self._start_updating_timer_id = GLib.timeout_add_seconds(2,
+                                                    self._save_system_time)
+
     def on_up_hours_clicked(self, *args):
+        self._stop_and_maybe_start_time_updating()
+
         hours_label = self.builder.get_object("hoursLabel")
         hours = int(hours_label.get_text())
 
@@ -216,6 +262,8 @@ class DatetimeSpoke(NormalSpoke):
         hours_label.set_text(new_hours_str)
 
     def on_down_hours_clicked(self, *args):
+        self._stop_and_maybe_start_time_updating()
+
         hours_label = self.builder.get_object("hoursLabel")
         hours = int(hours_label.get_text())
 
@@ -234,6 +282,8 @@ class DatetimeSpoke(NormalSpoke):
         hours_label.set_text(new_hours_str)
 
     def on_up_minutes_clicked(self, *args):
+        self._stop_and_maybe_start_time_updating()
+
         minutes_label = self.builder.get_object("minutesLabel")
         minutes = int(minutes_label.get_text())
         minutes_str = "%0.2d" % ((minutes + 1) % 60)
@@ -241,12 +291,16 @@ class DatetimeSpoke(NormalSpoke):
         pass
 
     def on_down_minutes_clicked(self, *args):
+        self._stop_and_maybe_start_time_updating()
+
         minutes_label = self.builder.get_object("minutesLabel")
         minutes = int(minutes_label.get_text())
         minutes_str = "%0.2d" % ((minutes - 1) % 60)
         minutes_label.set_text(minutes_str)
 
     def on_up_ampm_clicked(self, *args):
+        self._stop_and_maybe_start_time_updating()
+
         label = self.builder.get_object("amPmLabel")
         if label.get_text() == "AM":
             label.set_text("PM")
@@ -254,6 +308,8 @@ class DatetimeSpoke(NormalSpoke):
             label.set_text("AM")
 
     def on_down_ampm_clicked(self, *args):
+        self._stop_and_maybe_start_time_updating()
+
         label = self.builder.get_object("amPmLabel")
         if label.get_text() == "AM":
             label.set_text("PM")
-- 
1.7.4.4

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