mirror of
https://github.com/MidnightCommander/mc
synced 2024-12-22 20:36:50 +03:00
a5195d285a
Example:
gboolean mkdir_callback(const gchar *event_group, const gchar *event_name, gpointer init_data, gpointer event_data)
{
... /* some action for handle event */
return TRUE; /* got chance to run other callbacks for this event or */
return FALSE; /* break execution for other callbacks */
}
mc_event_add ("filesystem", "mkdir", mkdir_callback, "some init data", NULL);
mc_event_add ("filesystem", "mkdir", mkdir_log_callback, "some init data", NULL);
mc_event_add ("filesystem", "mkdir", third_callback, NULL, NULL);
/*
Last add - first run. In this case execution order is
* third_callback
* mkdir_log_callback
* mkdir_callback
if third_callback fuctions will return FALSE, then other callbacks
(mkdir_log_callback and mkdir_callback) never run!
*/
... /* some code */
/* for example, after pressing F7 */
mc_event_raise("filesystem", "mkdir", "some event_data... path to directory");
Signed-off-by: Slava Zanko <slavazanko@gmail.com>
136 lines
4.4 KiB
C
136 lines
4.4 KiB
C
/*
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Handle events in application.
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Interface functions: init/deinit; start/stop
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Copyright (C) 2011 The Free Software Foundation, Inc.
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Written by:
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Slava Zanko <slavazanko@gmail.com>, 2011.
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This file is part of the Midnight Commander.
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The Midnight Commander is free software; you can redistribute it
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and/or modify it under the terms of the GNU General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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The Midnight Commander is distributed in the hope that it will be
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useful, but WITHOUT ANY WARRANTY; without even the implied warranty
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of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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MA 02110-1301, USA.
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*/
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#include <config.h>
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#include "lib/global.h"
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#include "lib/event.h"
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#include "internal.h"
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/*** global variables ****************************************************************************/
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/*** file scope macro definitions ****************************************************************/
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/*** file scope type declarations ****************************************************************/
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/*** file scope variables ************************************************************************/
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GTree *mc_event_grouplist = NULL;
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/*** file scope functions ************************************************************************/
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/* --------------------------------------------------------------------------------------------- */
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/*** public functions ****************************************************************************/
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/* --------------------------------------------------------------------------------------------- */
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gboolean
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mc_event_init (GError ** mcerror)
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{
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if (mc_event_grouplist != NULL)
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{
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g_propagate_error (mcerror,
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g_error_new (mc_main_error_quark (), 1,
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_("Event system already initialized")));
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return FALSE;
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}
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mc_event_grouplist =
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g_tree_new_full ((GCompareDataFunc) g_ascii_strcasecmp,
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NULL, (GDestroyNotify) g_free, (GDestroyNotify) g_tree_destroy);
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if (mc_event_grouplist == NULL)
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{
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g_propagate_error (mcerror,
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g_error_new (mc_main_error_quark (), 2,
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_("Failed to initialize event system")));
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return FALSE;
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}
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return TRUE;
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}
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/* --------------------------------------------------------------------------------------------- */
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gboolean
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mc_event_deinit (GError ** mcerror)
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{
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if (mc_event_grouplist == NULL)
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{
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g_propagate_error (mcerror,
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g_error_new (mc_main_error_quark (), 1,
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_("Event system not initialized")));
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return FALSE;
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}
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g_tree_destroy (mc_event_grouplist);
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mc_event_grouplist = NULL;
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return TRUE;
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}
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/* --------------------------------------------------------------------------------------------- */
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gboolean
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mc_event_mass_add (event_init_t * events, GError ** mcerror)
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{
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size_t array_index;
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for (array_index = 0; events[array_index].event_group_name != NULL; array_index++)
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{
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if (!mc_event_add (events[array_index].event_group_name,
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events[array_index].event_name,
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events[array_index].cb, events[array_index].init_data, mcerror))
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{
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return FALSE;
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}
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}
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return TRUE;
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}
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/* --------------------------------------------------------------------------------------------- */
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gboolean
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mc_event_present (const gchar *event_group_name, const gchar *event_name)
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{
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GTree *event_group;
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GPtrArray *callbacks;
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if (mc_event_grouplist == NULL || event_group_name == NULL || event_name == NULL)
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return FALSE;
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event_group = mc_event_get_event_group_by_name (event_group_name, FALSE, NULL);
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if (event_group == NULL)
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return FALSE;
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callbacks = mc_event_get_event_by_name (event_group, event_name, FALSE, NULL);
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if (callbacks == NULL)
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return FALSE;
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return TRUE;
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}
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/* --------------------------------------------------------------------------------------------- */
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