summaryrefslogtreecommitdiffstats
path: root/lib/event/manage.c
diff options
context:
space:
mode:
Diffstat (limited to '')
-rw-r--r--lib/event/manage.c216
1 files changed, 216 insertions, 0 deletions
diff --git a/lib/event/manage.c b/lib/event/manage.c
new file mode 100644
index 0000000..b8f9733
--- /dev/null
+++ b/lib/event/manage.c
@@ -0,0 +1,216 @@
+/*
+ Handle any events in application.
+ Manage events: add, delete, destroy, search
+
+ Copyright (C) 2011-2023
+ Free Software Foundation, Inc.
+
+ Written by:
+ Slava Zanko <slavazanko@gmail.com>, 2011.
+
+ This file is part of the Midnight Commander.
+
+ The Midnight Commander is free software: you can redistribute it
+ and/or modify it under the terms of the GNU General Public License as
+ published by the Free Software Foundation, either version 3 of the License,
+ or (at your option) any later version.
+
+ The Midnight Commander 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 General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <config.h>
+
+#include "lib/global.h"
+#include "lib/util.h"
+#include "lib/event.h"
+
+#include "internal.h"
+
+/*** global variables ****************************************************************************/
+
+/*** file scope macro definitions ****************************************************************/
+
+/*** file scope type declarations ****************************************************************/
+
+/*** forward declarations (file scope functions) *************************************************/
+
+/*** file scope variables ************************************************************************/
+
+/* --------------------------------------------------------------------------------------------- */
+/*** file scope functions ************************************************************************/
+/* --------------------------------------------------------------------------------------------- */
+
+static void
+mc_event_group_destroy_value (gpointer data)
+{
+ g_ptr_array_free ((GPtrArray *) data, TRUE);
+}
+
+/* --------------------------------------------------------------------------------------------- */
+/*** public functions ****************************************************************************/
+/* --------------------------------------------------------------------------------------------- */
+
+gboolean
+mc_event_add (const gchar * event_group_name, const gchar * event_name,
+ mc_event_callback_func_t event_callback, gpointer event_init_data, GError ** mcerror)
+{
+ GTree *event_group;
+ GPtrArray *callbacks;
+ mc_event_callback_t *cb;
+
+ mc_return_val_if_error (mcerror, FALSE);
+
+ if (mc_event_grouplist == NULL || event_group_name == NULL || event_name == NULL
+ || event_callback == NULL)
+ {
+ mc_propagate_error (mcerror, 0, "%s", _("Check input data! Some of parameters are NULL!"));
+ return FALSE;
+ }
+
+ event_group = mc_event_get_event_group_by_name (event_group_name, TRUE, mcerror);
+ if (event_group == NULL)
+ return FALSE;
+
+ callbacks = mc_event_get_event_by_name (event_group, event_name, TRUE, mcerror);
+ if (callbacks == NULL)
+ return FALSE;
+
+ cb = mc_event_is_callback_in_array (callbacks, event_callback, event_init_data);
+ if (cb == NULL)
+ {
+ cb = g_new0 (mc_event_callback_t, 1);
+ cb->callback = event_callback;
+ g_ptr_array_add (callbacks, (gpointer) cb);
+ }
+ cb->init_data = event_init_data;
+ return TRUE;
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+void
+mc_event_del (const gchar * event_group_name, const gchar * event_name,
+ mc_event_callback_func_t event_callback, gpointer event_init_data)
+{
+ GTree *event_group;
+ GPtrArray *callbacks;
+ mc_event_callback_t *cb;
+
+ if (mc_event_grouplist == NULL || event_group_name == NULL || event_name == NULL
+ || event_callback == NULL)
+ return;
+
+ event_group = mc_event_get_event_group_by_name (event_group_name, FALSE, NULL);
+ if (event_group == NULL)
+ return;
+
+ callbacks = mc_event_get_event_by_name (event_group, event_name, FALSE, NULL);
+ if (callbacks == NULL)
+ return;
+
+ cb = mc_event_is_callback_in_array (callbacks, event_callback, event_init_data);
+ if (cb != NULL)
+ g_ptr_array_remove (callbacks, (gpointer) cb);
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+void
+mc_event_destroy (const gchar * event_group_name, const gchar * event_name)
+{
+ GTree *event_group;
+
+ if (mc_event_grouplist == NULL || event_group_name == NULL || event_name == NULL)
+ return;
+
+ event_group = mc_event_get_event_group_by_name (event_group_name, FALSE, NULL);
+ g_tree_remove (event_group, (gconstpointer) event_name);
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+void
+mc_event_group_del (const gchar * event_group_name)
+{
+
+ if (mc_event_grouplist != NULL && event_group_name != NULL)
+ g_tree_remove (mc_event_grouplist, (gconstpointer) event_group_name);
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+GTree *
+mc_event_get_event_group_by_name (const gchar * event_group_name, gboolean create_new,
+ GError ** mcerror)
+{
+ GTree *event_group;
+
+ mc_return_val_if_error (mcerror, FALSE);
+
+ event_group = (GTree *) g_tree_lookup (mc_event_grouplist, (gconstpointer) event_group_name);
+ if (event_group == NULL && create_new)
+ {
+ event_group =
+ g_tree_new_full ((GCompareDataFunc) g_ascii_strcasecmp,
+ NULL,
+ (GDestroyNotify) g_free,
+ (GDestroyNotify) mc_event_group_destroy_value);
+ if (event_group == NULL)
+ {
+ mc_propagate_error (mcerror, 0, _("Unable to create group '%s' for events!"),
+ event_group_name);
+ return NULL;
+ }
+ g_tree_insert (mc_event_grouplist, g_strdup (event_group_name), (gpointer) event_group);
+ }
+ return event_group;
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+GPtrArray *
+mc_event_get_event_by_name (GTree * event_group, const gchar * event_name, gboolean create_new,
+ GError ** mcerror)
+{
+ GPtrArray *callbacks;
+
+ mc_return_val_if_error (mcerror, FALSE);
+
+ callbacks = (GPtrArray *) g_tree_lookup (event_group, (gconstpointer) event_name);
+ if (callbacks == NULL && create_new)
+ {
+ callbacks = g_ptr_array_new_with_free_func (g_free);
+ if (callbacks == NULL)
+ {
+ mc_propagate_error (mcerror, 0, _("Unable to create event '%s'!"), event_name);
+ return NULL;
+ }
+ g_tree_insert (event_group, g_strdup (event_name), (gpointer) callbacks);
+ }
+ return callbacks;
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+mc_event_callback_t *
+mc_event_is_callback_in_array (GPtrArray * callbacks, mc_event_callback_func_t event_callback,
+ gpointer event_init_data)
+{
+ guint array_index;
+
+ for (array_index = 0; array_index < callbacks->len; array_index++)
+ {
+ mc_event_callback_t *cb = g_ptr_array_index (callbacks, array_index);
+ if (cb->callback == event_callback && cb->init_data == event_init_data)
+ return cb;
+ }
+ return NULL;
+}
+
+/* --------------------------------------------------------------------------------------------- */