Added engine for handle own events.

Signed-off-by: Slava Zanko <slavazanko@gmail.com>

configure.ac

@@ -564,6 +564,7 @@ src/mcconfig/Makefile
 src/search/Makefile
 src/tty/Makefile
 src/viewer/Makefile
+src/event/Makefile
 
 edit/Makefile
 syntax/Makefile

src/Makefile.am

@@ -1,4 +1,4 @@
-SUBDIRS = mcconfig search tty viewer filehighlight
+SUBDIRS = mcconfig search tty viewer filehighlight event
 
 AM_CFLAGS = $(GLIB_CFLAGS) -I$(top_srcdir) $(PCRE_CFLAGS)
 
@@ -43,10 +43,11 @@ MCCONFIGLIB = mcconfig/libmcconfig.la
 SEARCHLIB = search/libsearch.la
 TTYLIB =  tty/libmctty.la
 VIEWERLIB = viewer/libmcviewer.la
+EVENTLIB =  event/libmcevent.la
 FILEHIGHLIGHTLIB=filehighlight/libmcfilehighlight.la
 
 mc_LDADD = $(EDITLIB) $(VFSLIB) $(FILEHIGHLIGHTLIB) \
-	$(MCCONFIGLIB) $(SEARCHLIB) $(TTYLIB) $(VIEWERLIB) \
+	$(MCCONFIGLIB) $(SEARCHLIB) $(TTYLIB) $(VIEWERLIB) $(EVENTLIB)\
 	$(INTLLIBS) $(MCLIBS) $(SLANGLIB) $(LIBICONV) $(GLIB_LIBS)
 
 CHARSET_SRC = charsets.c charsets.h selcodepage.c selcodepage.h

src/event/Makefile.am

@@ -0,0 +1,13 @@
+
+noinst_LTLIBRARIES = libmcevent.la
+
+libmcevent_la_SOURCES = \
+	callback.c \
+	event.h \
+	event.c \
+	internal.h
+
+libmcevent_la_CFLAGS=-I../ -I$(top_srcdir)/src \
+	$(GLIB_CFLAGS) \
+	-DDATADIR=\""$(pkgdatadir)/"\" -DLOCALEDIR=\""$(localedir)"\"
+

src/event/callback.c

@@ -0,0 +1,79 @@
+/*
+   Handle any events in application.
+   Interface functions: callbacks handle
+
+   Copyright (C) 2009 The Free Software Foundation, Inc.
+
+   Written by:
+   Slava Zanko <slavazanko@gmail.com>, 2009.
+
+   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 2 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, write to the Free Software
+   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+   MA 02110-1301, USA.
+ */
+
+#include "event.h"
+#include "internal.h"
+
+/*** global variables ****************************************************************************/
+
+/*** file scope macro definitions ****************************************************************/
+
+/*** file scope type declarations ****************************************************************/
+
+/*** file scope variables ************************************************************************/
+
+/*** file scope functions ************************************************************************/
+
+/*** public functions ****************************************************************************/
+
+/* --------------------------------------------------------------------------------------------- */
+
+gboolean
+mcevent_add_cb(const gchar *event_name ,  mcevent_callback_func event_callback, gpointer some_callback_data)
+{
+    mcevent_t *event;
+
+    if (mcevent_hashlist == NULL || event_name == NULL || event_callback == NULL)
+	return FALSE;
+
+    event = g_new0(mcevent_t, 1);
+    if (event == NULL)
+	return FALSE;
+
+    event->name = g_strdup(event_name);
+    event->cb = event_callback;
+    event->data = some_callback_data;
+
+    if (mcevent_get_handler(event_name) != NULL)
+	mcevent_del_cb(event_name);
+
+    g_hash_table_insert (mcevent_hashlist, (gpointer) event_name, (gpointer) event);
+    return TRUE;
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+gboolean
+mcevent_del_cb(const gchar *event_name)
+{
+    if (mcevent_hashlist == NULL || event_name == NULL)
+	return FALSE;
+
+    return g_hash_table_remove (mcevent_hashlist, (gpointer) event_name);
+}
+
+/* --------------------------------------------------------------------------------------------- */

src/event/event.c

@@ -0,0 +1,140 @@
+/*
+   Handle any events in application.
+   Interface functions: init/deinit; start/stop
+
+   Copyright (C) 2009 The Free Software Foundation, Inc.
+
+   Written by:
+   Slava Zanko <slavazanko@gmail.com>, 2009.
+
+   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 2 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, write to the Free Software
+   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+   MA 02110-1301, USA.
+ */
+
+#include "event.h"
+
+/*** global variables ****************************************************************************/
+
+/*** file scope macro definitions ****************************************************************/
+
+/*** file scope type declarations ****************************************************************/
+
+/*** file scope variables ************************************************************************/
+
+GHashTable *mcevent_hashlist = NULL;
+
+
+/*** file scope functions ************************************************************************/
+
+/* --------------------------------------------------------------------------------------------- */
+
+static void
+mcevent_hash_destroy_key (gpointer data)
+{
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+static void
+mcevent_hash_destroy_value (gpointer data)
+{
+    mcevent_t *event = (mcevent_t *) data;
+    g_free(event->name);
+    g_free (event);
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+
+/*** public functions ****************************************************************************/
+
+/* --------------------------------------------------------------------------------------------- */
+
+gboolean mcevent_init(void)
+{
+    mcevent_hashlist =
+	g_hash_table_new_full (g_str_hash, g_str_equal,
+			       mcevent_hash_destroy_key,
+			       mcevent_hash_destroy_value);
+    if (mcevent_hashlist == NULL)
+	return FALSE;
+
+    return TRUE;
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+void mcevent_deinit(void)
+{
+    if (mcevent_hashlist == NULL)
+	return;
+
+    g_hash_table_destroy (mcevent_hashlist);
+    mcevent_hashlist = NULL;
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+void mcevent_run(void)
+{
+/* start GMainLoop */
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+void mcevent_stop(void)
+{
+/* stop GMainLoop */
+
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+GList *
+mcevent_get_list (void)
+{
+    if (mcevent_hashlist == NULL)
+	return NULL;
+
+    return g_hash_table_get_keys (mcevent_hashlist);
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+mcevent_t *
+mcevent_get_handler(const gchar *event_name)
+{
+    if (event_name == NULL || mcevent_hashlist == NULL)
+	return NULL;
+
+    return (mcevent_t *) g_hash_table_lookup (mcevent_hashlist, (gpointer) event_name);
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+gboolean mcevent_raise(const gchar *event_name, gpointer event_data)
+{
+     mcevent_t *event = mcevent_get_handler(event_name);
+
+     if (event == NULL)
+        return FALSE;
+
+    return (*event->cb) (event, event_data);
+}
+
+/* --------------------------------------------------------------------------------------------- */
+

src/event/event.h

@@ -0,0 +1,48 @@
+#ifndef MC__EVENT_H
+#define MC__EVENT_H
+
+#include <config.h>
+
+#include "../src/global.h"      /* <glib.h> */
+
+
+/*** typedefs(not structures) and defined constants **********************************************/
+struct mcevent_struct;
+
+
+typedef gboolean (*mcevent_callback_func) (struct mcevent_struct *, gpointer);
+
+
+/*** enums ***************************************************************************************/
+
+/*** structures declarations (and typedefs of structures)*****************************************/
+
+typedef struct mcevent_struct
+{
+    gchar *name;
+    mcevent_callback_func cb;
+    gpointer data;
+} mcevent_t;
+
+/*** global variables defined in .c file *********************************************************/
+
+/*** declarations of public functions ************************************************************/
+
+
+/* event.c: */
+gboolean mcevent_init(void);
+void mcevent_deinit(void);
+void mcevent_run(void);
+void mcevent_stop(void);
+
+GList *mcevent_get_list (void);
+mcevent_t *mcevent_get_handler(const gchar *);
+gboolean mcevent_raise(const gchar *, gpointer);
+
+
+/* callback.c: */
+gboolean mcevent_add_cb(const gchar *,  mcevent_callback_func, gpointer);
+gboolean mcevent_del_cb(const gchar *);
+
+
+#endif

src/event/internal.h

@@ -0,0 +1,16 @@
+#ifndef MC_EVENT_INTERNAL_H
+#define MC_EVENT_INTERNAL_H
+
+/*** typedefs(not structures) and defined constants ********************/
+
+/*** enums *************************************************************/
+
+/*** structures declarations (and typedefs of structures)***************/
+
+/*** global variables defined in .c file *******************************/
+
+extern GHashTable *mcevent_hashlist;
+
+/*** declarations of public functions **********************************/
+
+#endif