From b7a526e646eb71a9ebcc3a1afd18d5da12eaed8c Mon Sep 17 00:00:00 2001
From: Linas Vepstas <linas@linas.org>
Date: Sat, 26 Jul 2003 04:30:15 +0000
Subject: [PATCH] allow null pointer to be safely passed as arg

git-svn-id: svn+ssh://svn.gnucash.org/repo/gnucash/trunk@8924 57a11ea4-9604-0410-9ed3-97b8803252fd
---
 src/gnome-utils/gnc-frequency.c | 27 +++++++++++++++------------
 src/gnome-utils/gnc-frequency.h | 12 ++++++------
 2 files changed, 21 insertions(+), 18 deletions(-)

diff --git a/src/gnome-utils/gnc-frequency.c b/src/gnome-utils/gnc-frequency.c
index 5c2ac3cc8c..352011c180 100644
--- a/src/gnome-utils/gnc-frequency.c
+++ b/src/gnome-utils/gnc-frequency.c
@@ -564,7 +564,7 @@ gnc_frequency_setup( GNCFrequency *gf, FreqSpec *fs, GDate *startDate )
 }
 
 void
-gnc_frequency_save_state( GNCFrequency *gf, FreqSpec *fs, GDate *outStartDate )
+gnc_frequency_save_state( GNCFrequency *gf, FreqSpec *fs, GDate *outDate )
 {
         gint page;
         struct tm *tmpTm;
@@ -578,24 +578,27 @@ gnc_frequency_save_state( GNCFrequency *gf, FreqSpec *fs, GDate *outStartDate )
         GDate *gd2;
         time_t tmpTimeT;
 
-        /* get the current tab */
-        page = gtk_notebook_get_current_page( gf->nb );
-        /* save into UIFreqSpec */
+        tmpTimeT = gnc_date_edit_get_date( gf->startDate );
+        if ( NULL != outDate ) 
+        {
+                g_date_set_time( outDate, tmpTimeT );
+        }
 
-        /* We're going to be creating/destroying FreqSpecs, which will cause GUI
-           refreshes. :( */
+        if (NULL == fs) return;
+
+        /* Get the current tab */
+        page = gtk_notebook_get_current_page( gf->nb );
+
+        /* We're going to be creating/destroying FreqSpecs, 
+         * which will cause GUI refreshes. :( */
         gnc_suspend_gui_refresh();
 
-        tmpTimeT = gnc_date_edit_get_date( gf->startDate );
         gd = g_date_new();
         g_date_set_time( gd, tmpTimeT );
-        if ( outStartDate != NULL ) {
-                g_date_set_time( outStartDate, tmpTimeT );
-        }
         /*uift = xaccFreqSpecGetUIType( fs );*/
         uift = PAGES[page].uiFTVal;
 
-        /* based on value, parse widget values into FreqSpec */
+        /* Based on value, parse widget values into FreqSpec */
         switch ( uift ) {
         case UIFREQ_NONE:
                 /* hmmm... shouldn't really be allowed. */
@@ -1142,7 +1145,7 @@ gnc_frequency_set_frequency_label_text (GNCFrequency *gf, const gchar *txt)
 }
 
 void 
-gnc_frequency_set_startdate_label_text (GNCFrequency *gf, const gchar *txt)
+gnc_frequency_set_date_label_text (GNCFrequency *gf, const gchar *txt)
 {
    GtkLabel *lbl;
 	if (!gf || !txt) return;
diff --git a/src/gnome-utils/gnc-frequency.h b/src/gnome-utils/gnc-frequency.h
index 353a4c0d72..ad2d242336 100644
--- a/src/gnome-utils/gnc-frequency.h
+++ b/src/gnome-utils/gnc-frequency.h
@@ -84,11 +84,11 @@ void gnc_frequency_init( GNCFrequency *gf );
 void gnc_frequency_setup( GNCFrequency *gf, FreqSpec *fs, GDate *startDate );
 
 /**
- * Saves the state of the GNCFrequenecy widget into the given FreqSpec
- * and UIFreqSpec.
- * Places the start date in outStartDate, if it's not null.
+ * Saves the state of the GNCFrequenecy widget.
+ * Updates the given FreqSpec if it's not NULL.
+ * Places the date in outDate, if it's not NULL.
  **/
-void gnc_frequency_save_state( GNCFrequency *gf, FreqSpec *fs, GDate *outStartDate );
+void gnc_frequency_save_state( GNCFrequency *gf, FreqSpec *fs, GDate *outDate);
 
 /**
  * Set the label text for the frequency option menu.  In the current
@@ -96,10 +96,10 @@ void gnc_frequency_save_state( GNCFrequency *gf, FreqSpec *fs, GDate *outStartDa
  */
 void gnc_frequency_set_frequency_label_text (GNCFrequency *gf, const gchar *txt);
 /**
- * Set the label text for the start-date entry widget. In the current
+ * Set the label text for the date entry widget. In the current
  * impelmentation, the default label text is "Start Date:"
  */
-void gnc_frequency_set_startdate_label_text (GNCFrequency *gf, const gchar *txt);
+void gnc_frequency_set_date_label_text (GNCFrequency *gf, const gchar *txt);
 
 END_GNOME_DECLS