/usr/include/evolution-data-server/libedata-book/e-data-book-cursor.h is in libedata-book1.2-dev 3.18.5-1ubuntu1.
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/*
* Copyright (C) 2013 Intel Corporation
*
* This library is free software: you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation.
*
* This library is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
* for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library. If not, see <http://www.gnu.org/licenses/>.
*
* Authors: Tristan Van Berkom <tristanvb@openismus.com>
*/
#if !defined (__LIBEDATA_BOOK_H_INSIDE__) && !defined (LIBEDATA_BOOK_COMPILATION)
#error "Only <libedata-book/libedata-book.h> should be included directly."
#endif
#ifndef E_DATA_BOOK_CURSOR_H
#define E_DATA_BOOK_CURSOR_H
#include <gio/gio.h>
#include <libebook-contacts/libebook-contacts.h>
#define E_TYPE_DATA_BOOK_CURSOR (e_data_book_cursor_get_type ())
#define E_DATA_BOOK_CURSOR(o) (G_TYPE_CHECK_INSTANCE_CAST ((o), E_TYPE_DATA_BOOK_CURSOR, EDataBookCursor))
#define E_DATA_BOOK_CURSOR_CLASS(k) (G_TYPE_CHECK_CLASS_CAST((k), E_TYPE_DATA_BOOK_CURSOR, EDataBookCursorClass))
#define E_IS_DATA_BOOK_CURSOR(o) (G_TYPE_CHECK_INSTANCE_TYPE ((o), E_TYPE_DATA_BOOK_CURSOR))
#define E_IS_DATA_BOOK_CURSOR_CLASS(k) (G_TYPE_CHECK_CLASS_TYPE ((k), E_TYPE_DATA_BOOK_CURSOR))
#define E_DATA_BOOK_CURSOR_GET_CLASS(o) (G_TYPE_INSTANCE_GET_CLASS ((o), E_TYPE_DATA_BOOK_CURSOR, EDataBookCursorClass))
G_BEGIN_DECLS
struct _EBookBackend;
typedef struct _EDataBookCursor EDataBookCursor;
typedef struct _EDataBookCursorClass EDataBookCursorClass;
typedef struct _EDataBookCursorPrivate EDataBookCursorPrivate;
/*
* The following virtual methods have typedefs in order to provide richer
* documentation about how to implement the EDataBookCursorClass.
*/
/**
* EDataBookCursorSetSexpFunc:
* @cursor: an #EDataBookCursor
* @sexp: (allow-none): the search expression to set, or %NULL for unfiltered results
* @error: (out) (allow-none): return location for a #GError, or %NULL
*
* Method type for #EDataBookCursorClass.set_sexp()
*
* A cursor implementation must implement this in order to modify the search
* expression for @cursor. After this is called, the position and total will
* be recalculated.
*
* If the cursor implementation is unable to deal with the #EContactFields
* referred to in @sexp, then an %E_CLIENT_ERROR_INVALID_QUERY error should
* be set to indicate this.
*
* Returns: %TRUE on Success, otherwise %FALSE is returned if any error occurred
* and @error is set to reflect the error which occurred.
*
* Since: 3.12
*/
typedef gboolean (*EDataBookCursorSetSexpFunc) (EDataBookCursor *cursor,
const gchar *sexp,
GError **error);
/**
* EDataBookCursorStepFunc:
* @cursor: an #EDataBookCursor
* @revision_guard: (allow-none): The expected current addressbook revision, or %NULL
* @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
* @results: (out) (allow-none) (element-type utf8) (transfer full):
* A return location to store the results, or %NULL if %E_BOOK_CURSOR_STEP_FETCH is not specified in %flags
* @cancellable: (allow-none): A #GCancellable
* @error: (out) (allow-none): return location for a #GError, or %NULL
*
* Method type for #EDataBookCursorClass.step()
*
* As all cursor methods may be called either by the addressbook service or
* directly by a client in Direct Read Access mode, it is important that the
* operation be an atomic transaction with the underlying database.
*
* The @revision_guard, if specified, will be set to the %CLIENT_BACKEND_PROPERTY_REVISION
* value at the time which the given client issued the call to move the cursor.
* If the @revision_guard provided by the client does not match the stored addressbook
* revision, then an %E_CLIENT_ERROR_OUT_OF_SYNC error should be set to indicate
* that the revision was out of sync while attempting to move the cursor.
*
* <note><para>If the addressbook backend supports direct read access, then the
* revision comparison and reading of the data store must be coupled into a
* single atomic operation (the data read back from the store must be the correct
* data for the given addressbook revision).</para></note>
*
* See e_data_book_cursor_step() for more details on the expected behaviour of this method.
*
* Returns: The number of contacts traversed if successfull, otherwise -1 is
* returned and @error is set.
*
* Since: 3.12
*/
typedef gint (*EDataBookCursorStepFunc) (EDataBookCursor *cursor,
const gchar *revision_guard,
EBookCursorStepFlags flags,
EBookCursorOrigin origin,
gint count,
GSList **results,
GCancellable *cancellable,
GError **error);
/**
* EDataBookCursorSetAlphabetIndexFunc:
* @cursor: an #EDataBookCursor
* @index: the alphabetic index
* @locale: the locale in which @index is expected to be a valid alphabetic index
* @error: (out) (allow-none): return location for a #GError, or %NULL
*
* Method type for #EDataBookCursorClass.set_alphabetic_index()
*
* Sets the cursor state to point to an
* <link linkend="cursor-alphabet">index into the active alphabet</link>.
*
* The implementing class must check that @locale matches the current
* locale setting of the underlying database and report an %E_CLIENT_ERROR_OUT_OF_SYNC
* error in the case that the locales do not match.
*
* Returns: %TRUE on Success, otherwise %FALSE is returned if any error occurred
* and @error is set to reflect the error which occurred.
*
* Since: 3.12
*/
typedef gboolean (*EDataBookCursorSetAlphabetIndexFunc) (EDataBookCursor *cursor,
gint index,
const gchar *locale,
GError **error);
/**
* EDataBookCursorGetPositionFunc:
* @cursor: an #EDataBookCursor
* @total: (out): The total number of contacts matching @cursor's query expression
* @position: (out): The current position of @cursor in it's result list
* @cancellable: (allow-none): A #GCancellable
* @error: (out) (allow-none): return location for a #GError, or %NULL
*
* Method type for #EDataBookCursorClass.get_position()
*
* Cursor implementations must implement this to count the total results
* matching @cursor's query expression and to calculate the amount of contacts
* leading up to the current cursor state (cursor inclusive).
*
* A cursor position is defined as an integer which is inclusive of the
* current contact to which it points (if the cursor points to an exact
* contact). A position of %0 indicates that the cursor is situated in
* a position that is before and after the entire result set. The cursor
* position should be %0 at creation time, and should start again from
* the symbolic %0 position whenever %E_BOOK_CURSOR_ORIGIN_BEGIN is
* specified in the #EDataBookCursorClass.step() method (or whenever
* moving the cursor beyond the end of the result set).
*
* If the cursor is positioned beyond the end of the list, then
* the position should be the total amount of contacts available
* in the list (as returned through the @total argument) plus one.
*
* This method is called by e_data_book_cursor_recalculate() and in some
* other cases where @cursor's current position and total must be
* recalculated from scratch.
*
* Returns: %TRUE on Success, otherwise %FALSE is returned if any error occurred
* and @error is set to reflect the error which occurred.
*
* Since: 3.12
*/
typedef gboolean (*EDataBookCursorGetPositionFunc) (EDataBookCursor *cursor,
gint *total,
gint *position,
GCancellable *cancellable,
GError **error);
/**
* EDataBookCursorCompareContactFunc:
* @cursor: an #EDataBookCursor
* @contact: the #EContact to compare with @cursor
* @matches_sexp: (out) (allow-none): return location to set whether @contact matched @cursor's search expression
*
* Method type for #EDataBookCursorClass.compare_contact()
*
* Cursor implementations must implement this in order to compare a
* contact with the current cursor state.
*
* This is called when the addressbook backends notify active cursors
* that the addressbook has been modified with e_data_book_cursor_contact_added() and
* e_data_book_cursor_contact_removed().
*
* Returns: A value that is less than, equal to, or greater than zero if @contact is found,
* respectively, to be less than, to match, or be greater than the current value of @cursor.
*
* Since: 3.12
*/
typedef gint (*EDataBookCursorCompareContactFunc) (EDataBookCursor *cursor,
EContact *contact,
gboolean *matches_sexp);
/**
* EDataBookCursorLoadLocaleFunc:
* @cursor: an #EDataBookCursor
* @locale: (out) (transfer full): return location to store the newly loaded locale
* @error: (out) (allow-none): return location for a #GError, or %NULL
*
* Method type for #EDataBookCursorClass.load_locale()
*
* Fetches the locale setting from @cursor's addressbook
*
* If the locale setting has changed, the cursor must reload any
* internal locale specific data and ensure that comparisons of
* sort keys will function properly in the new locale.
*
* Upon locale changes, the implementation need not worry about
* updating it's current cursor state, the cursor state will be
* reset automatically for you.
*
* Returns: %TRUE on Success, otherwise %FALSE is returned if any error occurred
* and @error is set to reflect the error which occurred.
*
* Since: 3.12
*/
typedef gboolean (*EDataBookCursorLoadLocaleFunc) (EDataBookCursor *cursor,
gchar **locale,
GError **error);
/**
* EDataBookCursor:
*
* An opaque handle for an addressbook cursor
*
* Since: 3.12
*/
struct _EDataBookCursor {
GObject parent;
EDataBookCursorPrivate *priv;
};
/**
* EDataBookCursorClass:
* @set_sexp: The #EDataBookCursorSetSexpFunc delegate to set the search expression
* @step: The #EDataBookCursorStepFunc delegate to navigate the cursor
* @set_alphabetic_index: The #EDataBookCursorSetAlphabetIndexFunc delegate to set the alphabetic position
* @get_position: The #EDataBookCursorGetPositionFunc delegate to calculate the current total and position values
* @compare_contact: The #EDataBookCursorCompareContactFunc delegate to compare an #EContact with the the cursor position
* @load_locale: The #EDataBookCursorLoadLocaleFunc delegate used to reload the locale setting
*
* Methods to implement on an #EDataBookCursor concrete class.
*
* Since: 3.12
*/
struct _EDataBookCursorClass {
/*< private >*/
GObjectClass parent;
/*< public >*/
EDataBookCursorSetSexpFunc set_sexp;
EDataBookCursorStepFunc step;
EDataBookCursorSetAlphabetIndexFunc set_alphabetic_index;
EDataBookCursorGetPositionFunc get_position;
EDataBookCursorCompareContactFunc compare_contact;
EDataBookCursorLoadLocaleFunc load_locale;
};
GType e_data_book_cursor_get_type (void);
struct _EBookBackend *e_data_book_cursor_get_backend (EDataBookCursor *cursor);
gint e_data_book_cursor_get_total (EDataBookCursor *cursor);
gint e_data_book_cursor_get_position (EDataBookCursor *cursor);
gboolean e_data_book_cursor_set_sexp (EDataBookCursor *cursor,
const gchar *sexp,
GCancellable *cancellable,
GError **error);
gint e_data_book_cursor_step (EDataBookCursor *cursor,
const gchar *revision_guard,
EBookCursorStepFlags flags,
EBookCursorOrigin origin,
gint count,
GSList **results,
GCancellable *cancellable,
GError **error);
gboolean e_data_book_cursor_set_alphabetic_index (EDataBookCursor *cursor,
gint index,
const gchar *locale,
GCancellable *cancellable,
GError **error);
gboolean e_data_book_cursor_recalculate (EDataBookCursor *cursor,
GCancellable *cancellable,
GError **error);
gboolean e_data_book_cursor_load_locale (EDataBookCursor *cursor,
gchar **locale,
GCancellable *cancellable,
GError **error);
void e_data_book_cursor_contact_added (EDataBookCursor *cursor,
EContact *contact);
void e_data_book_cursor_contact_removed (EDataBookCursor *cursor,
EContact *contact);
gboolean e_data_book_cursor_register_gdbus_object (EDataBookCursor *cursor,
GDBusConnection *connection,
const gchar *object_path,
GError **error);
G_END_DECLS
#endif /* E_DATA_BOOK_CURSOR_H */
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