[evolution-data-server/gnome-3-22] Bug 775699 - Only latest 100 tasks downloaded from the Google

[Milan Crha <mcrha src gnome org>]

commit abe0188a16aadeaf2ced9037fe86c6c2e2649cd1
Author: Milan Crha <mcrha redhat com>
Date:   Thu Dec 8 17:27:28 2016 +0100

    Bug 775699 - Only latest 100 tasks downloaded from the Google

 calendar/backends/gtasks/e-cal-backend-gtasks.c |   21 +++++++++++++++++++--
 configure.ac                                    |   11 +++++++++++
 2 files changed, 30 insertions(+), 2 deletions(-)
---
diff --git a/calendar/backends/gtasks/e-cal-backend-gtasks.c b/calendar/backends/gtasks/e-cal-backend-gtasks.c
index b73542a..20f147a 100644
--- a/calendar/backends/gtasks/e-cal-backend-gtasks.c
+++ b/calendar/backends/gtasks/e-cal-backend-gtasks.c
@@ -447,8 +447,7 @@ ecb_gtasks_update_thread (gpointer user_data)
        cancellable = ecb_gtasks_ref_cancellable (gtasks);
 
        tasks_query = gdata_tasks_query_new (NULL);
-       gdata_query_set_start_index (GDATA_QUERY (tasks_query), 0);
-       gdata_query_set_max_results (GDATA_QUERY (tasks_query), G_MAXINT);
+       gdata_query_set_max_results (GDATA_QUERY (tasks_query), 100);
        gdata_tasks_query_set_show_completed (tasks_query, TRUE);
        gdata_tasks_query_set_show_hidden (tasks_query, TRUE);
 
@@ -463,7 +462,12 @@ ecb_gtasks_update_thread (gpointer user_data)
        if (!local_error)
                e_backend_ensure_source_status_connected (E_BACKEND (gtasks));
 
+#ifdef HAVE_LIBGDATA_TASKS_PAGINATION_FUNCTIONS
+       while (feed && !g_cancellable_is_cancelled (cancellable) && !local_error) {
+               const gchar *next_page_token;
+#else
        if (feed) {
+#endif
                GList *link;
                const gchar *uid;
 
@@ -534,6 +538,19 @@ ecb_gtasks_update_thread (gpointer user_data)
                e_cal_backend_store_thaw_changes (gtasks->priv->store);
 
                PROPERTY_UNLOCK (gtasks);
+
+#ifdef HAVE_LIBGDATA_TASKS_PAGINATION_FUNCTIONS
+               next_page_token = gdata_feed_get_next_page_token (feed);
+               if (!next_page_token || !*next_page_token)
+                       break;
+
+               gdata_tasks_query_set_page_token (tasks_query, next_page_token);
+
+               g_clear_object (&feed);
+
+               feed = gdata_tasks_service_query_tasks (gtasks->priv->service, gtasks->priv->tasklist,
+                       GDATA_QUERY (tasks_query), cancellable, NULL, NULL, &local_error);
+#endif
        }
 
        g_clear_object (&tasks_query);
diff --git a/configure.ac b/configure.ac
index e2bbb76..56f7ac7 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1612,6 +1612,17 @@ if test "x$enable_google" = xyes; then
        if `$PKG_CONFIG --atleast-version=0.15.1 libgdata`; then
                have_gdata_0_15_1=yes
        fi
+
+       AC_MSG_CHECKING([for libgdata GTasks pagination functions])
+       save_cflags=$CFLAGS; CFLAGS="$GDATA_CFLAGS"
+       save_libs=$LIBS; LIBS="$GDATA_LIBS"
+       AC_LINK_IFELSE([AC_LANG_PROGRAM(
+               [[#include <gdata/gdata.h>]],
+               [[const gchar *next_page_token; next_page_token = gdata_feed_get_next_page_token (NULL); 
gdata_tasks_query_set_page_token (NULL, next_page_token);]])],
+               [AC_DEFINE(HAVE_LIBGDATA_TASKS_PAGINATION_FUNCTIONS, 1, [Define to 1 when the libgdata 
provides GTasks pagination functions]) ac_cv_have_gdgtpf=yes],[ac_cv_have_gdgtpf=no])
+       CFLAGS=$save_cflags
+       LIBS=$save_libs
+       AC_MSG_RESULT([$ac_cv_have_gdgtpf])
 fi
 AM_CONDITIONAL(HAVE_GOOGLE, [test x$enable_google = xyes])
 AM_CONDITIONAL(HAVE_GDATA_0_15_1, [test x$have_gdata_0_15_1 = xyes])