Add getter/setter for transaction posted-date as a GDate.

In addition to the known timespec, the date is also stored
as a kvp_value of TYPE_GDATE so that we know afterwards this
date has really been set as a date.

git-svn-id: svn+ssh://svn.gnucash.org/repo/gnucash/trunk@18925 57a11ea4-9604-0410-9ed3-97b8803252fd

src/engine/Transaction.c

@@ -1584,6 +1584,28 @@ xaccTransSetDatePostedSecs (Transaction *trans, time_t secs)
     set_gains_date_dirty (trans);
 }
 
+void
+xaccTransSetDatePostedGDate (Transaction *trans, GDate date)
+{
+    KvpValue* kvp_value;
+    KvpFrame* frame;
+    if (!trans) return;
+
+    /* We additionally save this date into a kvp frame to ensure in
+     * the future a date which was set as *date* (without time) can
+     * clearly be distinguished from the Timespec. */
+    kvp_value = kvp_value_new_gdate(date);
+    frame = kvp_frame_set_value_nc(trans->inst.kvp_data, TRANS_DATE_POSTED, kvp_value);
+    if (!frame)
+    {
+        kvp_value_delete(kvp_value);
+    }
+
+    xaccTransSetDateInternal(trans, &trans->date_posted,
+                             gdate_to_timespec(date));
+    set_gains_date_dirty (trans);
+}
+
 void
 xaccTransSetDateEnteredSecs (Transaction *trans, time_t secs)
 {
@@ -1631,11 +1653,12 @@ xaccTransSetDateEnteredTS (Transaction *trans, const Timespec *ts)
 void
 xaccTransSetDate (Transaction *trans, int day, int mon, int year)
 {
-    Timespec ts;
+    GDate *date;
     if (!trans) return;
-    ts = gnc_dmy2timespec(day, mon, year);
-    xaccTransSetDateInternal(trans, &trans->date_posted, ts);
-    set_gains_date_dirty (trans);
+    date = g_date_new_dmy(day, mon, year);
+    g_assert(g_date_valid(date));
+    xaccTransSetDatePostedGDate(trans, *date);
+    g_date_free(date);
 }
 
 void
@@ -1833,6 +1856,29 @@ xaccTransRetDatePostedTS (const Transaction *trans)
     return trans ? trans->date_posted : ts;
 }
 
+GDate
+xaccTransGetDatePostedGDate (const Transaction *trans)
+{
+    GDate result;
+    if (trans)
+    {
+        /* Can we look up this value in the kvp slot? If yes, use it
+         * from there because it doesn't suffer from time zone
+         * shifts. */
+        const KvpValue* kvp_value =
+            kvp_frame_get_slot(trans->inst.kvp_data, TRANS_DATE_POSTED);
+        if (kvp_value)
+            result = kvp_value_get_gdate(kvp_value);
+        else
+            result = timespec_to_gdate(xaccTransRetDatePostedTS(trans));
+    }
+    else
+    {
+        g_date_clear(&result, 1);
+    }
+    return result;
+}
+
 Timespec
 xaccTransRetDateEnteredTS (const Transaction *trans)
 {

src/engine/Transaction.h

@@ -442,6 +442,15 @@ int  xaccTransOrder     (const Transaction *ta, const Transaction *tb);
 void          xaccTransSetDate (Transaction *trans,
                                 int day, int mon, int year);
 
+/** This method modifies <i>posted</i> date of the transaction,
+ * specified by a GDate. The posted date is the date when this
+ * transaction was posted at the bank.
+ *
+ * This is identical to xaccTransSetDate(), but different from
+ * xaccTransSetDatePostedSecs which artificially introduces the
+ * time-of-day part, which needs to be ignored. */
+void xaccTransSetDatePostedGDate (Transaction *trans, GDate date);
+
 /** The xaccTransSetDatePostedSecs() method will modify the <i>posted</i>
     date of the transaction, specified by a time_t (see ctime(3)). The
     posted date is the date when this transaction was posted at the
@@ -480,6 +489,9 @@ void          xaccTransGetDatePostedTS (const Transaction *trans, Timespec *ts);
     having different function names, GetDate and GetDatePosted refer
     to the same single date.)*/
 Timespec      xaccTransRetDatePostedTS (const Transaction *trans);
+/** Retrieve the posted date of the transaction. The posted date is
+    the date when this transaction was posted at the bank. */
+GDate      xaccTransGetDatePostedGDate (const Transaction *trans);
 
 /** Retrieve the date of when the transaction was entered. The entered
  * date is the date when the register entry was made.*/