[evolution-data-server/openismus-work-master] EBookClientCursor: New cursor step() API
- From: Tristan Van Berkom <tvb src gnome org>
- To: commits-list gnome org
- Cc:
- Subject: [evolution-data-server/openismus-work-master] EBookClientCursor: New cursor step() API
- Date: Sat, 19 Oct 2013 18:54:56 +0000 (UTC)
commit 787ad9b09f7c9140508da9f5944a83d7bdabc1f4
Author: Tristan Van Berkom <tristanvb openismus com>
Date: Fri Oct 18 22:39:38 2013 +0200
EBookClientCursor: New cursor step() API
addressbook/libebook/e-book-client-cursor.c | 233 +++++++++++++--------------
addressbook/libebook/e-book-client-cursor.h | 9 +-
2 files changed, 116 insertions(+), 126 deletions(-)
---
diff --git a/addressbook/libebook/e-book-client-cursor.c b/addressbook/libebook/e-book-client-cursor.c
index 0823e86..adcbb38 100644
--- a/addressbook/libebook/e-book-client-cursor.c
+++ b/addressbook/libebook/e-book-client-cursor.c
@@ -74,7 +74,7 @@
* in memory.
* </para>
* <para>
- * Iterating through the contact list is done with e_book_client_cursor_move_by(), this
+ * Iterating through the contact list is done with e_book_client_cursor_step(), this
* function allows one to move the cursor and fetch the results following the current
* cursor position:
* <informalexample>
@@ -82,12 +82,12 @@
* <![CDATA[GError *error = NULL;
* GSList *results;
*
- * if (!e_book_client_cursor_move_by_sync (cursor,
- * E_BOOK_CURSOR_ORIGIN_CURRENT,
- * 10,
- * &results,
- * NULL,
- * &error))
+ * if (!e_book_client_cursor_step_sync (cursor,
+ * E_BOOK_CURSOR_ORIGIN_CURRENT,
+ * 10,
+ * &results,
+ * NULL,
+ * &error))
* {
* if (g_error_matches (error,
* E_CLIENT_ERROR,
@@ -179,7 +179,7 @@
* }]]></programlisting>
* </informalexample>
* After setting the alphabetic index successfully, you can go ahead
- * and use e_book_client_cursor_move_by() to load some contacts at the
+ * and use e_book_client_cursor_step() to load some contacts at the
* beginning of the given letter.
* </para>
* <para>
@@ -215,7 +215,7 @@
/* Forward declarations */
typedef struct _SetSexpContext SetSexpContext;
-typedef struct _MoveByContext MoveByContext;
+typedef struct _StepContext StepContext;
typedef struct _AlphabetIndexContext AlphabetIndexContext;
typedef enum _NotificationType NotificationType;
typedef struct _Notification Notification;
@@ -305,12 +305,12 @@ static void set_sexp_context_free (SetSexpContext
static void set_sexp_thread (GSimpleAsyncResult *simple,
GObject *source_object,
GCancellable *cancellable);
-static MoveByContext *move_by_context_new (const gchar *revision,
+static StepContext *step_context_new (const gchar *revision,
+ EBookCursorStepFlags flags,
EBookCursorOrigin origin,
- gint count,
- gboolean fetch_results);
-static void move_by_context_free (MoveByContext *context);
-static void move_by_thread (GSimpleAsyncResult *simple,
+ gint count);
+static void step_context_free (StepContext *context);
+static void step_thread (GSimpleAsyncResult *simple,
GObject *source_object,
GCancellable *cancellable);
static AlphabetIndexContext *alphabet_index_context_new (gint index,
@@ -626,7 +626,7 @@ e_book_client_cursor_class_init (EBookClientCursorClass *class)
* Indicates that the addressbook has been modified and
* that the cursor results should be refreshed.
*
- * This is normally done by calling e_book_client_cursor_move_by()
+ * This is normally done by calling e_book_client_cursor_step()
* with an %E_BOOK_CURSOR_ORIGIN_PREVIOUS origin.
*
* This signal is guaranteed to be delivered in the #GMainContext
@@ -1480,11 +1480,11 @@ dra_position_changed_cb (EDataBookCursor *direct_cursor,
* We choose this method of asynchronous D-Bus calls only
* to be consistent with the rest of the libebook library.
*/
-struct _MoveByContext {
+struct _StepContext {
gchar *revision;
+ EBookCursorStepFlags flags;
EBookCursorOrigin origin;
gint count;
- gboolean fetch_results;
GSList *contacts;
guint new_total;
guint new_position;
@@ -1588,43 +1588,44 @@ set_sexp_thread (GSimpleAsyncResult *simple,
g_simple_async_result_take_error (simple, local_error);
}
-static MoveByContext *
-move_by_context_new (const gchar *revision,
- EBookCursorOrigin origin,
- gint count,
- gboolean fetch_results)
+static StepContext *
+step_context_new (const gchar *revision,
+ EBookCursorStepFlags flags,
+ EBookCursorOrigin origin,
+ gint count)
{
- MoveByContext *context = g_slice_new0 (MoveByContext);
+ StepContext *context = g_slice_new0 (StepContext);
context->revision = g_strdup (revision);
+ context->flags = flags;
context->origin = origin;
context->count = count;
- context->fetch_results = fetch_results;
context->n_results = 0;
return context;
}
static void
-move_by_context_free (MoveByContext *context)
+step_context_free (StepContext *context)
{
if (context) {
g_free (context->revision);
g_slist_free_full (context->contacts, (GDestroyNotify)g_object_unref);
- g_slice_free (MoveByContext, context);
+ g_slice_free (StepContext, context);
}
}
static gint
-move_by_sync_internal (EBookClientCursor *cursor,
- const gchar *revision,
- EBookCursorOrigin origin,
- gint count,
- GSList **out_contacts,
- guint *new_total,
- guint *new_position,
- GCancellable *cancellable,
- GError **error)
+step_sync_internal (EBookClientCursor *cursor,
+ const gchar *revision,
+ EBookCursorStepFlags flags,
+ EBookCursorOrigin origin,
+ gint count,
+ GSList **out_contacts,
+ guint *new_total,
+ guint *new_position,
+ GCancellable *cancellable,
+ GError **error)
{
EBookClientCursorPrivate *priv;
GError *local_error = NULL;
@@ -1637,12 +1638,13 @@ move_by_sync_internal (EBookClientCursor *cursor,
GSList *results = NULL, *l;
GSList *contacts = NULL;
- n_results = e_data_book_cursor_move_by (priv->direct_cursor,
- revision,
- origin,
- count,
- out_contacts ? &results : NULL,
- error);
+ n_results = e_data_book_cursor_step (priv->direct_cursor,
+ revision,
+ flags,
+ origin,
+ count,
+ &results,
+ error);
if (n_results < 0)
return n_results;
@@ -1667,11 +1669,12 @@ move_by_sync_internal (EBookClientCursor *cursor,
return n_results;
}
- e_dbus_address_book_cursor_call_move_by_sync (
+ e_dbus_address_book_cursor_call_step_sync (
priv->dbus_proxy,
revision,
- origin, count,
- out_contacts != NULL,
+ flags,
+ origin,
+ count,
&n_results,
&vcards,
new_total,
@@ -1707,24 +1710,25 @@ move_by_sync_internal (EBookClientCursor *cursor,
}
static void
-move_by_thread (GSimpleAsyncResult *simple,
- GObject *source_object,
- GCancellable *cancellable)
+step_thread (GSimpleAsyncResult *simple,
+ GObject *source_object,
+ GCancellable *cancellable)
{
- MoveByContext *context;
+ StepContext *context;
GError *local_error = NULL;
context = g_simple_async_result_get_op_res_gpointer (simple);
context->n_results =
- move_by_sync_internal (E_BOOK_CLIENT_CURSOR (source_object),
- context->revision,
- context->origin,
- context->count,
- context->fetch_results ? &(context->contacts) : NULL,
- &context->new_total,
- &context->new_position,
- cancellable, &local_error);
+ step_sync_internal (E_BOOK_CLIENT_CURSOR (source_object),
+ context->revision,
+ context->flags,
+ context->origin,
+ context->count,
+ &(context->contacts),
+ &context->new_total,
+ &context->new_position,
+ cancellable, &local_error);
if (local_error != NULL)
g_simple_async_result_take_error (simple, local_error);
@@ -2100,70 +2104,65 @@ e_book_client_cursor_set_sexp_sync (EBookClientCursor *cursor,
}
/**
- * e_book_client_cursor_move_by:
+ * e_book_client_cursor_step:
* @cursor: an #EBookClientCursor
- * @origin: the #EBookCursorOrigin for this move
+ * @flags: The #EBookCursorStepFlags for this step
+ * @origin: The #EBookCursorOrigin from whence to step
* @count: a positive or negative amount of contacts to try and fetch
- * @fetch_results: whether to fetch the list of results, if %FALSE then only the position and cursor value
is modified.
* @cancellable: (allow-none): a #GCancellable to optionally cancel this operation while in progress
* @callback: callback to call when a result is ready
* @user_data: user data for the @callback
*
- * <link linkend="cursor-iteration">Moves the cursor through the results</link> by
+ * <link linkend="cursor-iteration">Steps the cursor through the results</link> by
* a maximum of @count and fetch the results traversed.
*
- * If @fetch_results is %FALSE, the cursor will be moved but no results will be
- * fetched from the addressbook, this can be useful to reduce D-Bus traffic
- * when the cursor must be moved but results are not needed.
- *
- * See: e_book_client_cursor_move_by_sync().
+ * See: e_book_client_cursor_step_sync().
*
* This asynchronous call is completed with a call to
- * e_book_client_cursor_move_by_finish() from the specified @callback.
+ * e_book_client_cursor_step_finish() from the specified @callback.
*
* Since: 3.12
*/
void
-e_book_client_cursor_move_by (EBookClientCursor *cursor,
- EBookCursorOrigin origin,
- gint count,
- gboolean fetch_results,
- GCancellable *cancellable,
- GAsyncReadyCallback callback,
- gpointer user_data)
+e_book_client_cursor_step (EBookClientCursor *cursor,
+ EBookCursorStepFlags flags,
+ EBookCursorOrigin origin,
+ gint count,
+ GCancellable *cancellable,
+ GAsyncReadyCallback callback,
+ gpointer user_data)
{
GSimpleAsyncResult *simple;
- MoveByContext *context;
+ StepContext *context;
g_return_if_fail (E_IS_BOOK_CLIENT_CURSOR (cursor));
- g_return_if_fail (count != 0 || origin == E_BOOK_CURSOR_ORIGIN_RESET);
g_return_if_fail (callback != NULL);
- context = move_by_context_new (cursor->priv->revision,
- origin, count, fetch_results);
+ context = step_context_new (cursor->priv->revision,
+ flags, origin, count);
simple = g_simple_async_result_new (G_OBJECT (cursor),
callback, user_data,
- e_book_client_cursor_move_by);
+ e_book_client_cursor_step);
g_simple_async_result_set_check_cancellable (simple, cancellable);
g_simple_async_result_set_op_res_gpointer (simple, context,
- (GDestroyNotify) move_by_context_free);
+ (GDestroyNotify) step_context_free);
g_simple_async_result_run_in_thread (
- simple, move_by_thread,
+ simple, step_thread,
G_PRIORITY_DEFAULT, cancellable);
g_object_unref (simple);
}
/**
- * e_book_client_cursor_move_by_finish:
+ * e_book_client_cursor_step_finish:
* @cursor: an #EBookClientCursor
* @result: a #GAsyncResult
* @out_contacts: (element-type EContact) (out) (transfer full) (allow-none): return location for a #GSList
of #EContacts
* @error: (out) (allow-none): return location for a #GError, or %NULL
*
- * Completes an asynchronous call initiated by e_book_client_cursor_move_by(), fetching
+ * Completes an asynchronous call initiated by e_book_client_cursor_step(), fetching
* any contacts which might have been returned by the call.
*
* Returns: The number of contacts which the cursor has moved by if successfull.
@@ -2172,18 +2171,18 @@ e_book_client_cursor_move_by (EBookClientCursor *cursor,
* Since: 3.12
*/
gint
-e_book_client_cursor_move_by_finish (EBookClientCursor *cursor,
- GAsyncResult *result,
- GSList **out_contacts,
- GError **error)
+e_book_client_cursor_step_finish (EBookClientCursor *cursor,
+ GAsyncResult *result,
+ GSList **out_contacts,
+ GError **error)
{
GSimpleAsyncResult *simple;
- MoveByContext *context;
+ StepContext *context;
g_return_val_if_fail (
g_simple_async_result_is_valid (
result, G_OBJECT (cursor),
- e_book_client_cursor_move_by), FALSE);
+ e_book_client_cursor_step), FALSE);
simple = G_SIMPLE_ASYNC_RESULT (result);
context = g_simple_async_result_get_op_res_gpointer (simple);
@@ -2210,41 +2209,29 @@ e_book_client_cursor_move_by_finish (EBookClientCursor *cursor,
}
/**
- * e_book_client_cursor_move_by_sync:
+ * e_book_client_cursor_step_sync:
* @cursor: an #EBookClientCursor
- * @origin: the #EBookCursorOrigin for this move
+ * @flags: The #EBookCursorStepFlags for this step
+ * @origin: The #EBookCursorOrigin from whence to step
* @count: a positive or negative amount of contacts to try and fetch
* @out_contacts: (element-type EContact) (out) (transfer full) (allow-none): return location for a #GSList
of #EContacts
* @cancellable: (allow-none): a #GCancellable to optionally cancel this operation while in progress
* @error: (out) (allow-none): return location for a #GError, or %NULL
*
- * <link linkend="cursor-iteration">Moves the cursor through the results</link> by
+ * <link linkend="cursor-iteration">Steps the cursor through the results</link> by
* a maximum of @count and fetch the results traversed.
*
- * If @out_contacts is %NULL, the cursor will be moved but no results will be
- * fetched from the addressbook, this can be useful to reduce D-Bus traffic
- * when the cursor must be moved but results are not needed.
- *
* If @count is negative, then the cursor will move backwards.
*
- * If @cursor's position is %0, or @origin is %E_BOOK_CURSOR_ORIGIN_RESET,
- * then @count contacts will be fetched from the beginning of the cursor's query
- * results, or from the ending of the query results for a negative value of @count.
- *
- * The #EBookCursorOrigin allows one to control the origin from where
- * the cursor should move from, this allows one to reset the cursor
- * position at any time, to move the cursor from the current position,
- * or to reuse the previously stored cursor position. The cursor implementation
- * stores a dual cursor state for the express purpose of allowing one
- * to query the cursor using the %E_BOOK_CURSOR_ORIGIN_PREVIOUS origin,
- * this is provided so that one can easily repeat the last cursor query
- * at any time the addressbook changes and results need to be reloaded.
- *
* If @cursor reaches the beginning or end of the query results, then the
- * returned results might not contain the requested amount of contacts, or might
- * return no results at all if the cursor currently points to the last contact.
- * This is not considered an error condition, but will result in a cursor position
- * of %0.
+ * returned list might not contain the amount of desired contacts, or might
+ * return no results if the cursor currently points to the last contact.
+ * Reaching the end of the list is not considered an error condition. Attempts
+ * to step beyond the end of the list after having reached the end of the list
+ * will however trigger an %E_CLIENT_ERROR_END_OF_LIST error.
+ *
+ * If %E_BOOK_CURSOR_STEP_FETCH is specified in %flags, a pointer to
+ * a %NULL #GSList pointer should be provided for the @results parameter.
*
* A side effect of moving the cursor is that the #EBookClientCursor:position
* property will be updated.
@@ -2267,21 +2254,23 @@ e_book_client_cursor_move_by_finish (EBookClientCursor *cursor,
* Since: 3.12
*/
gint
-e_book_client_cursor_move_by_sync (EBookClientCursor *cursor,
- EBookCursorOrigin origin,
- gint count,
- GSList **out_contacts,
- GCancellable *cancellable,
- GError **error)
+e_book_client_cursor_step_sync (EBookClientCursor *cursor,
+ EBookCursorStepFlags flags,
+ EBookCursorOrigin origin,
+ gint count,
+ GSList **out_contacts,
+ GCancellable *cancellable,
+ GError **error)
{
guint new_total = 0, new_position = 0;
gint retval;
g_return_val_if_fail (E_IS_BOOK_CLIENT_CURSOR (cursor), FALSE);
- g_return_val_if_fail (count != 0 || origin == E_BOOK_CURSOR_ORIGIN_RESET, FALSE);
- retval = move_by_sync_internal (cursor, cursor->priv->revision, origin, count, out_contacts,
- &new_total, &new_position, cancellable, error);
+ retval = step_sync_internal (cursor, cursor->priv->revision,
+ flags, origin, count,
+ out_contacts, &new_total, &new_position,
+ cancellable, error);
/* If we are in the thread where the cursor was created,
* then synchronize the new total & position right away
@@ -2401,7 +2390,7 @@ e_book_client_cursor_set_alphabetic_index_finish (EBookClientCursor *cursor,
* Sets the current cursor position to point to an <link linkend="cursor-alphabet">Alphabetic Index</link>.
*
* After setting the target alphabetic index, for example the
- * index for letter 'E', then further calls to e_book_client_cursor_move_by()
+ * index for letter 'E', then further calls to e_book_client_cursor_step()
* will return results starting with the letter 'E' (or results starting
* with the last result in 'D' when navigating through cursor results
* in reverse).
diff --git a/addressbook/libebook/e-book-client-cursor.h b/addressbook/libebook/e-book-client-cursor.h
index fbaadc4..e8a5420 100644
--- a/addressbook/libebook/e-book-client-cursor.h
+++ b/addressbook/libebook/e-book-client-cursor.h
@@ -107,18 +107,19 @@ gboolean e_book_client_cursor_set_sexp_sync (EBookClie
const gchar *sexp,
GCancellable *cancellable,
GError **error);
-void e_book_client_cursor_move_by (EBookClientCursor *cursor,
+void e_book_client_cursor_step (EBookClientCursor *cursor,
+ EBookCursorStepFlags flags,
EBookCursorOrigin origin,
gint count,
- gboolean fetch_results,
GCancellable *cancellable,
GAsyncReadyCallback callback,
gpointer user_data);
-gint e_book_client_cursor_move_by_finish (EBookClientCursor *cursor,
+gint e_book_client_cursor_step_finish (EBookClientCursor *cursor,
GAsyncResult *result,
GSList **out_contacts,
GError **error);
-gint e_book_client_cursor_move_by_sync (EBookClientCursor *cursor,
+gint e_book_client_cursor_step_sync (EBookClientCursor *cursor,
+ EBookCursorStepFlags flags,
EBookCursorOrigin origin,
gint count,
GSList **out_contacts,
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