path: root/shell/es-event.c

/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/*
 *  Authors: Michael Zucchi <notzed@ximian.com>
 *
 *  Copyright 2004 Ximian, Inc. (www.ximian.com)
 *
 *  This program 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.
 *
 *  This program 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., 59 Temple Street #330, Boston, MA 02111-1307, USA.
 *
 */

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include <string.h>
#include <stdlib.h>

#include <glib.h>

#include "es-event.h"

static GObjectClass *eme_parent;
static ESEvent *es_event;

static void
eme_init(GObject *o)
{
    /*ESEvent *eme = (ESEvent *)o; */
}

static void
eme_finalise(GObject *o)
{
    ((GObjectClass *)eme_parent)->finalize(o);
}

static void
eme_target_free(EEvent *ep, EEventTarget *t)
{
    switch (t->type) {
    case ES_EVENT_TARGET_STATE: {
        ESEventTargetState *s = (ESEventTargetState *)t;

        s = s;
        break; }
    }

    ((EEventClass *)eme_parent)->target_free(ep, t);
}

static void
eme_class_init(GObjectClass *klass)
{
    klass->finalize = eme_finalise;
    ((EEventClass *)klass)->target_free = eme_target_free;
}

GType
es_event_get_type(void)
{
    static GType type = 0;

    if (type == 0) {
        static const GTypeInfo info = {
            sizeof(ESEventClass),
            NULL, NULL,
            (GClassInitFunc)eme_class_init,
            NULL, NULL,
            sizeof(ESEvent), 0,
            (GInstanceInitFunc)eme_init
        };
        eme_parent = g_type_class_ref(e_event_get_type());
        type = g_type_register_static(e_event_get_type(), "ESEvent", &info, 0);
    }

    return type;
}

/**
 * es_event_peek:
 * @void: 
 * 
 * Get the singular instance of the shell event handler.
 * 
 * Return value: 
 **/
ESEvent *es_event_peek(void)
{
    if (es_event == NULL) {
        es_event = g_object_new(es_event_get_type(), 0);
        /** @HookPoint: Shell Events Hookpoint
         * Id: org.gnome.evolution.shell.events
         *
         * This is the hook point which emits shell events.
         */
        e_event_construct(&es_event->event, "org.gnome.evolution.shell.events");
    }

    return es_event;
}

ESEventTargetState *
es_event_target_new_state(ESEvent *eme, int state)
{
    ESEventTargetState *t = e_event_target_new(&eme->event, ES_EVENT_TARGET_STATE, sizeof(*t));
    guint32 mask = ~0;

    t->state = state;

    if (state)
        mask &= ~ES_EVENT_STATE_ONLINE;
    else
        mask &= ~ES_EVENT_STATE_OFFLINE;

    t->target.mask = mask;

    return t;
}

ESEventTargetShell *
es_event_target_new_shell(ESEvent *eme, EShell *shell)
{
    ESEventTargetShell *t = e_event_target_new(&eme->event, ES_EVENT_TARGET_SHELL, sizeof(*t));

    t->shell = shell;

    return t;
}

ESEventTargetUpgrade *
es_event_target_new_upgrade(ESEvent *eme, int major, int minor, int revision)
{
    ESEventTargetUpgrade *t = e_event_target_new(&eme->event, ES_EVENT_TARGET_UPGRADE, sizeof(*t));

    t->major = major;
    t->minor = minor;
    t->revision = revision;

    return t;   
}

/* ********************************************************************** */

static void *emeh_parent_class;
#define emeh ((ESEventHook *)eph)

static const EEventHookTargetMask emeh_state_masks[] = {
    { "online", ES_EVENT_STATE_ONLINE },
    { "offline", ES_EVENT_STATE_OFFLINE },
    { 0 }
};

static const EEventHookTargetMap emeh_targets[] = {
    { "state", ES_EVENT_TARGET_STATE, emeh_state_masks },
    { "upgrade", ES_EVENT_TARGET_UPGRADE, NULL },
    { "shell", ES_EVENT_TARGET_SHELL, NULL },
    { 0 }
};

static void
emeh_finalise(GObject *o)
{
    /*EPluginHook *eph = (EPluginHook *)o;*/

    ((GObjectClass *)emeh_parent_class)->finalize(o);
}

static void
emeh_class_init(EPluginHookClass *klass)
{
    int i;

    /** @HookClass: Shell Main Menu
     * @Id: org.gnome.evolution.shell.events:1.0
     * @Target: ESEventTargetState
     * 
     * A hook for events coming from the shell.
     **/

    ((GObjectClass *)klass)->finalize = emeh_finalise;
    ((EPluginHookClass *)klass)->id = "org.gnome.evolution.shell.events:1.0";

    for (i=0;emeh_targets[i].type;i++)
        e_event_hook_class_add_target_map((EEventHookClass *)klass, &emeh_targets[i]);

    ((EEventHookClass *)klass)->event = (EEvent *)es_event_peek();
}

GType
es_event_hook_get_type(void)
{
    static GType type = 0;
    
    if (!type) {
        static const GTypeInfo info = {
            sizeof(ESEventHookClass), NULL, NULL, (GClassInitFunc) emeh_class_init, NULL, NULL,
            sizeof(ESEventHook), 0, (GInstanceInitFunc) NULL,
        };

        emeh_parent_class = g_type_class_ref(e_event_hook_get_type());
        type = g_type_register_static(e_event_hook_get_type(), "ESEventHook", &info, 0);
    }
    
    return type;
}