[evolution-data-server/openismus-work-master: 71/73] EBookClient: Implemented e_book_client_get_cursor() Sync and Async methods



commit ad111bfe9c2939e182058ae0228136bcfb2d9496
Author: Tristan Van Berkom <tristanvb openismus com>
Date:   Tue Jul 2 17:48:48 2013 +0900

    EBookClient: Implemented e_book_client_get_cursor() Sync and Async methods

 addressbook/libebook/e-book-client.c |  367 ++++++++++++++++++++++++++++++++++
 addressbook/libebook/e-book-client.h |   22 ++
 2 files changed, 389 insertions(+), 0 deletions(-)
---
diff --git a/addressbook/libebook/e-book-client.c b/addressbook/libebook/e-book-client.c
index 722aa64..41b90dc 100644
--- a/addressbook/libebook/e-book-client.c
+++ b/addressbook/libebook/e-book-client.c
@@ -66,10 +66,15 @@ struct _EBookClientPrivate {
 struct _AsyncContext {
        EContact *contact;
        EBookClientView *client_view;
+       EBookClientCursor *client_cursor;
        GSList *object_list;
        GSList *string_list;
+       EContactField *sort_fields;
+       EBookSortType *sort_types;
+       guint n_sort_fields;
        gchar *sexp;
        gchar *uid;
+       GMainContext *context;
 };
 
 struct _SignalClosure {
@@ -124,6 +129,12 @@ async_context_free (AsyncContext *async_context)
        if (async_context->client_view != NULL)
                g_object_unref (async_context->client_view);
 
+       if (async_context->client_cursor != NULL)
+               g_object_unref (async_context->client_cursor);
+
+       if (async_context->context)
+               g_main_context_unref (async_context->context);
+
        g_slist_free_full (
                async_context->object_list,
                (GDestroyNotify) g_object_unref);
@@ -132,6 +143,9 @@ async_context_free (AsyncContext *async_context)
                async_context->string_list,
                (GDestroyNotify) g_free);
 
+       g_free (async_context->sort_fields);
+       g_free (async_context->sort_types);
+
        g_free (async_context->sexp);
        g_free (async_context->uid);
 
@@ -3722,6 +3736,359 @@ e_book_client_get_view_sync (EBookClient *client,
        return success;
 }
 
+/* Helper for e_book_client_get_cursor() */
+static const gchar **
+sort_param_to_strv (gpointer param,
+                   gint     n_fields,
+                   gboolean keys)
+{
+       const gchar **array;
+       gint i;
+
+       array = (const gchar **)g_new0 (gchar *, n_fields + 1);
+
+       /* string arrays are shallow allocated, the strings themselves
+        * are intern strings and don't need to be dupped.
+        */
+       for (i = 0; i < n_fields; i++) {
+
+               if (keys) {
+                       EContactField *fields = (EContactField *)param;
+
+                       array[i] = e_contact_field_name (fields[i]);
+               } else {
+                       EBookSortType *types = (EBookSortType *)param;
+
+                       array[i] = e_enum_to_string (E_TYPE_BOOK_SORT_TYPE,
+                                                    types[i]);
+               }
+       }
+
+       return array;
+}
+
+static void
+book_client_get_cursor_in_dbus_thread (GSimpleAsyncResult *simple,
+                                      GObject *source_object,
+                                      GCancellable *cancellable)
+{
+       EBookClient *client = E_BOOK_CLIENT (source_object);
+       AsyncContext *async_context;
+       gchar *utf8_sexp;
+       gchar *object_path = NULL;
+       GError *local_error = NULL;
+       const gchar **sort_fields;
+       const gchar **sort_types;
+
+       async_context = g_simple_async_result_get_op_res_gpointer (simple);
+
+       /* Direct Read Access cursor don't need any
+        * D-Bus connection themselves, just give them
+        * an EDataBookCursor directly
+        */
+       if (client->priv->direct_backend) {
+               EDataBookCursor *cursor;
+
+               cursor = e_book_backend_create_cursor (client->priv->direct_backend,
+                                                      async_context->sort_fields,
+                                                      async_context->sort_types,
+                                                      async_context->n_sort_fields,
+                                                      &local_error);
+
+               if (cursor) {
+                       if (!e_data_book_cursor_set_sexp (cursor,
+                                                         async_context->sexp,
+                                                         &local_error)) {
+                               e_book_backend_delete_cursor (client->priv->direct_backend,
+                                                             cursor);
+                               cursor = NULL;
+                       }
+               }
+
+               if (cursor != NULL) {
+                       EBookClientCursor *client_cursor;
+
+                       /* The client cursor will take a ref, but 
+                        * e_book_backend_create_cursor() returns
+                        * a pointer to a cursor owned by the backend,
+                        * don't unref the returned pointer here.
+                        */
+                       client_cursor = g_initable_new (
+                               E_TYPE_BOOK_CLIENT_CURSOR,
+                               cancellable, &local_error,
+                               "client", client,
+                               "context", async_context->context,
+                               "direct-cursor", cursor,
+                               NULL);
+
+                       /* Sanity check. */
+                       g_return_if_fail (
+                                         ((client_cursor != NULL) && (local_error == NULL)) ||
+                                         ((client_cursor == NULL) && (local_error != NULL)));
+
+                       async_context->client_cursor = client_cursor;
+               }
+
+       } else {
+               utf8_sexp = e_util_utf8_make_valid (async_context->sexp);
+               sort_fields = sort_param_to_strv (async_context->sort_fields,
+                                                 async_context->n_sort_fields, TRUE);
+               sort_types = sort_param_to_strv (async_context->sort_types,
+                                                async_context->n_sort_fields, FALSE);
+
+               e_dbus_address_book_call_get_cursor_sync (
+                       client->priv->dbus_proxy, utf8_sexp,
+                       (const gchar *const *)sort_fields,
+                       (const gchar *const *)sort_types,
+                       &object_path, cancellable, &local_error);
+
+               g_free (utf8_sexp);
+               g_free (sort_fields);
+               g_free (sort_types);
+
+               /* Sanity check. */
+               g_return_if_fail (
+                         ((object_path != NULL) && (local_error == NULL)) ||
+                         ((object_path == NULL) && (local_error != NULL)));
+
+               if (object_path != NULL) {
+                       GDBusConnection *connection;
+                       EBookClientCursor *client_cursor;
+
+                       connection = g_dbus_proxy_get_connection (
+                               G_DBUS_PROXY (client->priv->dbus_proxy));
+
+                       client_cursor = g_initable_new (
+                               E_TYPE_BOOK_CLIENT_CURSOR,
+                               cancellable, &local_error,
+                               "client", client,
+                               "context", async_context->context,
+                               "connection", connection,
+                               "object-path", object_path,
+                               NULL);
+
+                       /* Sanity check. */
+                       g_return_if_fail (
+                                         ((client_cursor != NULL) && (local_error == NULL)) ||
+                                         ((client_cursor == NULL) && (local_error != NULL)));
+
+                       async_context->client_cursor = client_cursor;
+
+                       g_free (object_path);
+               }
+       }
+
+       if (local_error != NULL) {
+               g_dbus_error_strip_remote_error (local_error);
+               g_simple_async_result_take_error (simple, local_error);
+       }
+}
+
+/* Need to catch the GMainContext of the actual caller,
+ * we do this dance because e_async_closure_new ()
+ * steps on the thread default main context (so we
+ * can use this in the sync call as well).
+ */
+static void
+e_book_client_get_cursor_with_context (EBookClient *client,
+                                      const gchar *sexp,
+                                      EContactField *sort_fields,
+                                      EBookSortType *sort_types,
+                                      guint n_fields,
+                                      GMainContext *context,
+                                      GCancellable *cancellable,
+                                      GAsyncReadyCallback callback,
+                                      gpointer user_data)
+{
+       GSimpleAsyncResult *simple;
+       AsyncContext *async_context;
+
+       g_return_if_fail (E_IS_BOOK_CLIENT (client));
+       g_return_if_fail (sort_fields != NULL);
+       g_return_if_fail (sort_types != NULL);
+       g_return_if_fail (n_fields > 0);
+
+       async_context = g_slice_new0 (AsyncContext);
+       async_context->sexp = g_strdup (sexp);
+       async_context->sort_fields = g_memdup (sort_fields, sizeof (EContactField) * n_fields);
+       async_context->sort_types = g_memdup (sort_types, sizeof (EBookSortType) * n_fields);
+       async_context->n_sort_fields = n_fields;
+       async_context->context = g_main_context_ref (context);
+
+       simple = g_simple_async_result_new (
+               G_OBJECT (client), callback, user_data,
+               e_book_client_get_cursor);
+
+       g_simple_async_result_set_check_cancellable (simple, cancellable);
+
+       g_simple_async_result_set_op_res_gpointer (
+               simple, async_context, (GDestroyNotify) async_context_free);
+
+       book_client_run_in_dbus_thread (
+               simple, book_client_get_cursor_in_dbus_thread,
+               G_PRIORITY_DEFAULT, cancellable);
+
+       g_object_unref (simple);
+}
+
+/**
+ * e_book_client_get_cursor:
+ * @client: an #EBookClient
+ * @sexp: an S-expression representing the query
+ * @sort_fields: an array of #EContactFields to sort the cursor with
+ * @sort_types: an array of #EBookSortTypes to complement @sort_fields
+ * @n_fields: the length of the input @sort_fields and @sort_types arrays
+ * @cancellable: a #GCancellable; can be %NULL
+ * @callback: callback to call when a result is ready
+ * @user_data: user data for the @callback
+ *
+ * Create an #EBookClientCursor.
+ * The call is finished by e_book_client_get_view_finish()
+ * from the @callback.
+ *
+ * Note: @sexp can be obtained through #EBookQuery, by converting it
+ * to a string with e_book_query_to_string().
+ *
+ * Since: 3.10
+ */
+void
+e_book_client_get_cursor (EBookClient *client,
+                         const gchar *sexp,
+                         EContactField *sort_fields,
+                         EBookSortType *sort_types,
+                         guint n_fields,
+                         GCancellable *cancellable,
+                         GAsyncReadyCallback callback,
+                         gpointer user_data)
+{
+       GMainContext *context;
+
+       context = g_main_context_ref_thread_default ();
+       e_book_client_get_cursor_with_context (client, sexp,
+                                              sort_fields,
+                                              sort_types,
+                                              n_fields,
+                                              context,
+                                              cancellable,
+                                              callback,
+                                              user_data);
+       g_main_context_unref (context);
+}
+
+/**
+ * e_book_client_get_cursor_finish:
+ * @client: an #EBookClient
+ * @result: a #GAsyncResult
+ * @out_cursor: (out): return location for an #EBookClientCursor
+ * @error: (out): a #GError to set an error, if any
+ *
+ * Finishes previous call of e_book_client_get_cursor().
+ * If successful, then the @out_cursor is set to newly create
+ * #EBookClientCursor, the cursor should be freed with g_object_unref()
+ * when no longer needed.
+ *
+ * Returns: %TRUE if successful, %FALSE otherwise.
+ *
+ * Since: 3.10
+ */
+gboolean
+e_book_client_get_cursor_finish (EBookClient *client,
+                                GAsyncResult *result,
+                                EBookClientCursor **out_cursor,
+                                GError **error)
+{
+       GSimpleAsyncResult *simple;
+       AsyncContext *async_context;
+
+       g_return_val_if_fail (E_IS_BOOK_CLIENT (client), FALSE);
+       g_return_val_if_fail (
+               g_simple_async_result_is_valid (
+               result, G_OBJECT (client),
+               e_book_client_get_cursor), FALSE);
+
+       simple = G_SIMPLE_ASYNC_RESULT (result);
+       async_context = g_simple_async_result_get_op_res_gpointer (simple);
+
+       if (g_simple_async_result_propagate_error (simple, error))
+               return FALSE;
+
+       g_return_val_if_fail (async_context->client_cursor != NULL, FALSE);
+
+       if (out_cursor != NULL)
+               *out_cursor = g_object_ref (async_context->client_cursor);
+
+       return TRUE;
+}
+
+/**
+ * e_book_client_get_cursor_sync:
+ * @client: an #EBookClient
+ * @sexp: an S-expression representing the query
+ * @sort_fields: an array of #EContactFields to sort the cursor with
+ * @sort_types: an array of #EBookSortTypes to complement @sort_fields
+ * @n_fields: the length of the input @sort_fields and @sort_types arrays
+ * @out_cursor: (out): return location for an #EBookClientCursor
+ * @cancellable: a #GCancellable; can be %NULL
+ * @error: (out): a #GError to set an error, if any
+ *
+ *
+ * Create an #EBookClientCursor. If successful, then the @out_cursor is set
+ * to newly allocated #EBookClientCursor, the cursor should be freed with g_object_unref()
+ * when no longer needed.
+ *
+ * Note: @sexp can be obtained through #EBookQuery, by converting it
+ * to a string with e_book_query_to_string().
+ *
+ * Returns: %TRUE if successful, %FALSE otherwise.
+ *
+ * Since: 3.10
+ */
+gboolean
+e_book_client_get_cursor_sync (EBookClient *client,
+                              const gchar *sexp,
+                              EContactField *sort_fields,
+                              EBookSortType *sort_types,
+                              guint n_fields,
+                              EBookClientCursor **out_cursor,
+                              GCancellable *cancellable,
+                              GError **error)
+{
+       EAsyncClosure *closure;
+       GAsyncResult *result;
+       gboolean success;
+       GMainContext *context;
+
+       g_return_val_if_fail (E_IS_BOOK_CLIENT (client), FALSE);
+       g_return_val_if_fail (sort_fields != NULL, FALSE);
+       g_return_val_if_fail (sort_types != NULL, FALSE);
+       g_return_val_if_fail (n_fields > 0, FALSE);
+       g_return_val_if_fail (out_cursor != NULL, FALSE);
+
+       /* Get the main context before e_async_closure_new () steps on it */
+       context = g_main_context_ref_thread_default ();
+
+       closure = e_async_closure_new ();
+
+       e_book_client_get_cursor_with_context (client, sexp,
+                                              sort_fields,
+                                              sort_types,
+                                              n_fields,
+                                              context,
+                                              cancellable,
+                                              e_async_closure_callback, closure);
+
+       g_main_context_unref (context);
+
+       result = e_async_closure_wait (closure);
+
+       success = e_book_client_get_cursor_finish (
+               client, result, out_cursor, error);
+
+       e_async_closure_free (closure);
+
+       return success;
+}
+
 static void
 book_client_set_locale (EBookClient *client,
                        const gchar *locale)
diff --git a/addressbook/libebook/e-book-client.h b/addressbook/libebook/e-book-client.h
index d4f72fa..8c7135f 100644
--- a/addressbook/libebook/e-book-client.h
+++ b/addressbook/libebook/e-book-client.h
@@ -29,6 +29,7 @@
 #include <libedataserver/libedataserver.h>
 
 #include <libebook/e-book-client-view.h>
+#include <libebook/e-book-client-cursor.h>
 #include <libebook-contacts/libebook-contacts.h>
 
 /* Standard GObject macros */
@@ -282,8 +283,29 @@ gboolean   e_book_client_get_view_sync     (EBookClient *client,
                                                 EBookClientView **out_view,
                                                 GCancellable *cancellable,
                                                 GError **error);
+void           e_book_client_get_cursor        (EBookClient *client,
+                                                const gchar *sexp,
+                                                EContactField *sort_fields,
+                                                EBookSortType *sort_types,
+                                                guint n_fields,
+                                                GCancellable *cancellable,
+                                                GAsyncReadyCallback callback,
+                                                gpointer user_data);
+gboolean       e_book_client_get_cursor_finish (EBookClient *client,
+                                                GAsyncResult *result,
+                                                EBookClientCursor **out_cursor,
+                                                GError **error);
+gboolean       e_book_client_get_cursor_sync   (EBookClient *client,
+                                                const gchar *sexp,
+                                                EContactField *sort_fields,
+                                                EBookSortType *sort_types,
+                                                guint n_fields,
+                                                EBookClientCursor **out_cursor,
+                                                GCancellable *cancellable,
+                                                GError **error);
 const gchar    *e_book_client_get_locale        (EBookClient *client);
 
+
 #ifndef EDS_DISABLE_DEPRECATED
 /**
  * BOOK_BACKEND_PROPERTY_SUPPORTED_AUTH_METHODS:


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