From aad7e86a109aeec75b3772cda20478363f966745 Mon Sep 17 00:00:00 2001
From: Charles Kerr <charles.kerr@canonical.com>
Date: Wed, 22 Jan 2014 14:28:20 -0600
Subject: Alarms is going to need to know when the clock's minute changes. We
 already have a timer for that in Formatter, so move it from there to Clock
 and add a corresponding public signal Clock.minuteChanged that both Formatter
 and Alarms can use. Sync unit tests.

---
 include/datetime/clock-mock.h |  8 ++++----
 include/datetime/clock.h      | 20 +++++++++-----------
 include/datetime/date-time.h  |  5 +++--
 3 files changed, 16 insertions(+), 17 deletions(-)

(limited to 'include')

diff --git a/include/datetime/clock-mock.h b/include/datetime/clock-mock.h
index 19a859b..27926ff 100644
--- a/include/datetime/clock-mock.h
+++ b/include/datetime/clock-mock.h
@@ -42,11 +42,11 @@ public:
     DateTime localtime() const { return m_localtime; }
 
     void set_localtime(const DateTime& dt) {
-        const auto old_day = m_localtime.day_of_year();
+        const auto old = m_localtime;
         m_localtime = dt;
-        skewDetected();
-        const auto new_day = m_localtime.day_of_year();
-        if (old_day != new_day)
+        if (!DateTime::is_same_minute(old, m_localtime))
+            minuteChanged();
+        if (!DateTime::is_same_day(old, m_localtime))
             dateChanged();
     }
 
diff --git a/include/datetime/clock.h b/include/datetime/clock.h
index 9e87082..b3e3538 100644
--- a/include/datetime/clock.h
+++ b/include/datetime/clock.h
@@ -35,21 +35,25 @@ namespace datetime {
 
 /**
  * \brief A clock.
- *
- * Provides a signal to notify when clock skew is detected, such as
- * when the timezone changes or when the system resumes from sleep.
  */
 class Clock
 {
 public:
     virtual ~Clock();
     virtual DateTime localtime() const =0;
-    core::Signal<> skewDetected;
+
+    /** \brief A signal which fires when the clock's minute changes */
+    core::Signal<> minuteChanged;
+
+    /** \brief A signal which fires when the clock's date changes */
     core::Signal<> dateChanged;
 
 protected:
     Clock();
 
+    /** \brief Compares old and new times, emits minuteChanged() or dateChanged() signals if appropriate */
+    void maybe_emit (const DateTime& a, const DateTime& b);
+
 private:
     static void onSystemBusReady(GObject*, GAsyncResult*, gpointer);
     static void onPrepareForSleep(GDBusConnection*, const gchar*, const gchar*, const gchar*, const gchar*, GVariant*, gpointer);
@@ -70,12 +74,7 @@ private:
 class Timezones;
 
 /**
- * \brief A live clock that provides the actual system time.
- *
- * This subclass also adds another clock skew detection test:
- * it wakes up every skewTestIntervalSec seconds to see how
- * much time has passed since the last wakeup. If the answer
- * isn't what it expected, the skewDetected signal is triggered.
+ * \brief A live #Clock that provides the actual system time.
  */
 class LiveClock: public Clock
 {
@@ -83,7 +82,6 @@ public:
     LiveClock (const std::shared_ptr<Timezones>& zones);
     virtual ~LiveClock();
     virtual DateTime localtime() const;
-    core::Property<unsigned int> skewTestIntervalSec;
 
 private:
     class Impl;
diff --git a/include/datetime/date-time.h b/include/datetime/date-time.h
index 145e34e..c2429eb 100644
--- a/include/datetime/date-time.h
+++ b/include/datetime/date-time.h
@@ -49,13 +49,14 @@ public:
     std::string format(const std::string& fmt) const;
     int day_of_month() const;
     int64_t to_unix() const;
-    int day_of_year() const;
-    gint64 difference(const DateTime& that) const;
 
     bool operator<(const DateTime& that) const;
     bool operator!=(const DateTime& that) const;
     bool operator==(const DateTime& that) const;
 
+    static bool is_same_day(const DateTime& a, const DateTime& b);
+    static bool is_same_minute(const DateTime& a, const DateTime& b);
+
 private:
     std::shared_ptr<GDateTime> m_dt;
 };
-- 
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