path: root/shell/es-event.c

/*
 * This program 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; either
 * version 2 of the License, or (at your option) version 3.
 *
 * 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with the program; if not, see <http://www.gnu.org/licenses/>
 *
 *
 * Authors:
 *      Michael Zucchi <notzed@ximian.com>
 *
 * Copyright (C) 1999-2008 Novell, Inc. (www.novell.com)
 *
 */

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

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

#include "es-event.h"
#include "e-shell.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:
 *
 * Get the singular instance of the shell event handler.
 *
 * Return: the shell event handler
 **/
ESEvent *es_event_peek (void)
{
    if (es_event == NULL) {
        es_event = g_object_new (es_event_get_type (), NULL);
        /** @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;
}

ESEventTargetShell *
es_event_target_new (ESEvent *eme)
{
    return e_event_target_new (
        &eme->event, ES_EVENT_TARGET_SHELL,
        sizeof (ESEventTargetShell));
}

ESEventTargetState *
es_event_target_new_state (ESEvent *eme, gint state)
{
    ESEventTargetState *t;
    guint32 mask = ~0;

    t = e_event_target_new (
        &eme->event, ES_EVENT_TARGET_STATE, sizeof (*t));
    t->state = state;

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

    t->target.mask = mask;

    return t;
}

ESEventTargetUpgrade *
es_event_target_new_upgrade (ESEvent *eme, gint major, gint minor, gint revision)
{
    ESEventTargetUpgrade *t;

    t = e_event_target_new (
        &eme->event, ES_EVENT_TARGET_UPGRADE, sizeof (*t));
    t->major = major;
    t->minor = minor;
    t->revision = revision;

    return t;
}

ESEventTargetComponent *
es_event_target_new_component (ESEvent *eme, const gchar *id)
{
    ESEventTargetComponent *t;

    t = e_event_target_new (
        &eme->event, ES_EVENT_TARGET_COMPONENT, sizeof (*t));
    t->id = id;

    return t;
}

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

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

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

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 },
    { "component", ES_EVENT_TARGET_COMPONENT, NULL },
    { NULL }
};

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

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

static void
emeh_class_init (EPluginHookClass *klass)
{
    gint 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;
}