[evolution] I#254 - Handle components with no Summary in the To Do bar and Week view

[Milan Crha <mcrha src gnome org>]

commit 9a917242120b6feac7622baa1fac34bbe5427f0f
Author: Milan Crha <mcrha redhat com>
Date:   Tue Dec 4 14:49:59 2018 +0100

    I#254 - Handle components with no Summary in the To Do bar and Week view
    
    Closes https://gitlab.gnome.org/GNOME/evolution/issues/254

 src/calendar/gui/e-to-do-pane.c | 26 +++++++++++++++++++++-----
 src/calendar/gui/e-week-view.c  | 15 ++++++++++++---
 2 files changed, 33 insertions(+), 8 deletions(-)
---
diff --git a/src/calendar/gui/e-to-do-pane.c b/src/calendar/gui/e-to-do-pane.c
index 4384dcd141..fdf55c9e68 100644
--- a/src/calendar/gui/e-to-do-pane.c
+++ b/src/calendar/gui/e-to-do-pane.c
@@ -298,6 +298,22 @@ etdp_format_date_time (ECalClient *client,
        return e_datetime_format_format_tm ("calendar", "table", itt.is_date ? DTFormatKindDate : 
DTFormatKindDateTime, &tm);
 }
 
+static const gchar *
+etdp_get_component_summary (icalcomponent *icalcomp)
+{
+       const gchar *summary;
+
+       if (!icalcomp)
+               return "";
+
+       summary = icalcomponent_get_summary (icalcomp);
+
+       if (!summary || !*summary)
+               summary = "";
+
+       return summary;
+}
+
 static gboolean
 etdp_get_component_data (EToDoPane *to_do_pane,
                         ECalClient *client,
@@ -339,7 +355,7 @@ etdp_get_component_data (EToDoPane *to_do_pane,
 
        tooltip = g_string_sized_new (512);
 
-       etdp_append_to_string_escaped (tooltip, "<b>%s</b>", icalcomponent_get_summary (icalcomp), NULL);
+       etdp_append_to_string_escaped (tooltip, "<b>%s</b>", etdp_get_component_summary (icalcomp), NULL);
 
        if (location) {
                g_string_append (tooltip, "\n");
@@ -460,7 +476,7 @@ etdp_get_component_data (EToDoPane *to_do_pane,
 
                if (time_str) {
                        *out_summary = g_markup_printf_escaped ("<span size=\"xx-small\">%s</span> %s%s%s%s",
-                               time_str, icalcomponent_get_summary (icalcomp), location ? " (" : "",
+                               time_str, etdp_get_component_summary (icalcomp), location ? " (" : "",
                                location ? location : "", location ? ")" : "");
                }
 
@@ -468,7 +484,7 @@ etdp_get_component_data (EToDoPane *to_do_pane,
        }
 
        if (!*out_summary) {
-               *out_summary = g_markup_printf_escaped ("%s%s%s%s", icalcomponent_get_summary (icalcomp),
+               *out_summary = g_markup_printf_escaped ("%s%s%s%s", etdp_get_component_summary (icalcomp),
                        location ? " (" : "", location ? location : "", location ? ")" : "");
        }
 
@@ -496,12 +512,12 @@ etdp_get_component_data (EToDoPane *to_do_pane,
                if (icaltime_is_null_time (itt)) {
                        /* Sort those without Start date after those with it */
                        *out_sort_key = g_strdup_printf ("%s-Z-%s-%s-%s",
-                               prefix, icalcomponent_get_summary (icalcomp),
+                               prefix, etdp_get_component_summary (icalcomp),
                                (id && id->uid) ? id->uid : "", (id && id->rid) ? id->rid : "");
                } else {
                        *out_sort_key = g_strdup_printf ("%s-%04d%02d%02d%02d%02d%02d-%s-%s-%s",
                                prefix, itt.year, itt.month, itt.day, itt.hour, itt.minute, itt.second,
-                               icalcomponent_get_summary (icalcomp),
+                               etdp_get_component_summary (icalcomp),
                                (id && id->uid) ? id->uid : "", (id && id->rid) ? id->rid : "");
                }
        } else {
diff --git a/src/calendar/gui/e-week-view.c b/src/calendar/gui/e-week-view.c
index ad1ae1b57c..40fad7aade 100644
--- a/src/calendar/gui/e-week-view.c
+++ b/src/calendar/gui/e-week-view.c
@@ -3701,7 +3701,7 @@ get_comp_summary (ECalClient *client,
        location = icalcomponent_get_location (icalcomp);
        if (location && *location) {
                *free_text = TRUE;
-               summary = g_strdup_printf ("%s (%s)", my_summary, location);
+               summary = g_strdup_printf ("%s (%s)", my_summary ? my_summary : "", location);
 
                if (my_free_text)
                        g_free ((gchar *) my_summary);
@@ -4054,6 +4054,7 @@ e_week_view_start_editing_event (EWeekView *week_view,
        ETextEventProcessor *event_processor = NULL;
        ETextEventProcessorCommand command;
        ECalModelComponent *comp_data;
+       const gchar *summary;
 
        /* If we are already editing the event, just return. */
        if (event_num == week_view->editing_event_num
@@ -4095,9 +4096,13 @@ e_week_view_start_editing_event (EWeekView *week_view,
                        return FALSE;
        }
 
+       summary = icalcomponent_get_summary (event->comp_data->icalcomp);
+       if (!summary)
+               summary = "";
+
        gnome_canvas_item_set (
                span->text_item,
-               "text", initial_text ? initial_text : icalcomponent_get_summary (event->comp_data->icalcomp),
+               "text", initial_text ? initial_text : summary,
                NULL);
 
        /* Save the comp_data value because we use that as our invariant */
@@ -4656,12 +4661,16 @@ e_week_view_on_editing_started (EWeekView *week_view,
 
                        if (is_comp_data_valid (event) &&
                            is_array_index_in_bounds (week_view->spans, event->spans_index + span_num)) {
+                               const gchar *summary;
+
                                span = &g_array_index (week_view->spans, EWeekViewEventSpan,
                                                       event->spans_index + span_num);
 
+                               summary = icalcomponent_get_summary (event->comp_data->icalcomp);
+
                                gnome_canvas_item_set (
                                        span->text_item,
-                                       "text", icalcomponent_get_summary (event->comp_data->icalcomp),
+                                       "text", summary ? summary : "",
                                        NULL);
                        }
                }