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/* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 8; tab-width: 8 -*- */
/* evolution-composer.c
 *
 * Copyright (C) 2000  Helix Code, Inc.
 *
 * 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 Place - Suite 330,
 * Boston, MA 02111-1307, USA.
 *
 * Author: Dan Winship <danw@helixcode.com>
 */

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

#include <gtk/gtksignal.h>
#include <bonobo/bonobo-item-handler.h>
#include <bonobo/bonobo-generic-factory.h>
#include <gal/util/e-util.h>
#include <gal/widgets/e-gui-utils.h>
#include <camel/camel.h>
#include "evolution-composer.h"
#include "mail/mail-config.h"

#define PARENT_TYPE BONOBO_OBJECT_TYPE
static BonoboObjectClass *parent_class = NULL;

static void (*send_cb) (EMsgComposer *, gpointer);
static void (*postpone_cb) (EMsgComposer *, gpointer);

/* CORBA interface implementation.  */

static POA_GNOME_Evolution_Composer__vepv Composer_vepv;

static GList *
corba_recipientlist_to_glist (const GNOME_Evolution_Composer_RecipientList *cl)
{
    GNOME_Evolution_Composer_Recipient *recip;
    GList *gl = NULL;
    char *str;
    int i;

    for (i = cl->_length - 1; i >= 0; i--) {
        recip = &(cl->_buffer[i]);

        /* Let's copy this code into yet another place! */
        if (*recip->name) {
            str = camel_internet_address_format_address (recip->name, recip->address);
        } else
            str = g_strdup (recip->address);
        
        gl = g_list_prepend (gl, str);      
    }

    return gl;
}

static void
free_recipient_glist (GList *gl)
{
    GList *tmp;

    while (gl) {
        tmp = gl->next;
        g_free (gl->data);
        g_list_free_1 (gl);
        gl = tmp;
    }
}

static void
impl_Composer_set_headers (PortableServer_Servant servant,
               const GNOME_Evolution_Composer_RecipientList *to,
               const GNOME_Evolution_Composer_RecipientList *cc,
               const GNOME_Evolution_Composer_RecipientList *bcc,
               const CORBA_char *subject,
               CORBA_Environment *ev)
{
    BonoboObject *bonobo_object;
    EvolutionComposer *composer;
    GList *gto, *gcc, *gbcc;

    bonobo_object = bonobo_object_from_servant (servant);
    composer = EVOLUTION_COMPOSER (bonobo_object);

    gto = corba_recipientlist_to_glist (to);
    gcc = corba_recipientlist_to_glist (cc);
    gbcc = corba_recipientlist_to_glist (bcc);
    
    e_msg_composer_set_headers (composer->composer, NULL, gto, gcc, gbcc,
                    subject);

    free_recipient_glist (gto);
    free_recipient_glist (gcc);
    free_recipient_glist (gbcc);
}

static void
impl_Composer_set_body_text (PortableServer_Servant servant,
                 const CORBA_char *text,
                 CORBA_Environment *ev)
{
    BonoboObject *bonobo_object;
    EvolutionComposer *composer;

    bonobo_object = bonobo_object_from_servant (servant);
    composer = EVOLUTION_COMPOSER (bonobo_object);

    e_msg_composer_set_body_text (composer->composer, text);
}

static void
impl_Composer_attach_MIME (PortableServer_Servant servant,
               const CORBA_char *data,
               CORBA_Environment *ev)
{
    BonoboObject *bonobo_object;
    EvolutionComposer *composer;
    CamelMimePart *attachment;
    CamelStream *mem_stream;
    int status;

    bonobo_object = bonobo_object_from_servant (servant);
    composer = EVOLUTION_COMPOSER (bonobo_object);

    mem_stream = camel_stream_mem_new_with_buffer (data, strlen (data));
    attachment = camel_mime_part_new ();
    status = camel_data_wrapper_construct_from_stream (
        CAMEL_DATA_WRAPPER (attachment), mem_stream);
    camel_object_unref (CAMEL_OBJECT (mem_stream));

    if (status == -1) {
        CORBA_exception_set (ev, CORBA_USER_EXCEPTION,
                     ex_GNOME_Evolution_Composer_CouldNotParse,
                     NULL);
        return;
    }

    e_msg_composer_attach (composer->composer, attachment);
    camel_object_unref (CAMEL_OBJECT (attachment));
}

static void
impl_Composer_attach_data (PortableServer_Servant servant,
               const CORBA_char *content_type,
               const CORBA_char *filename,
               const CORBA_char *description,
               const CORBA_boolean show_inline,
               const GNOME_Evolution_Composer_AttachmentData *data,
               CORBA_Environment *ev)
{
    BonoboObject *bonobo_object;
    EvolutionComposer *composer;
    CamelMimePart *attachment;

    bonobo_object = bonobo_object_from_servant (servant);
    composer = EVOLUTION_COMPOSER (bonobo_object);

    attachment = camel_mime_part_new ();
    camel_mime_part_set_content (attachment, data->_buffer, data->_length,
                     content_type);

    if (*filename)
        camel_mime_part_set_filename (attachment, filename);
    if (*description)
        camel_mime_part_set_description (attachment, description);
    camel_mime_part_set_disposition (attachment, show_inline ?
                     "inline" : "attachment");

    e_msg_composer_attach (composer->composer, attachment);
    camel_object_unref (CAMEL_OBJECT (attachment));
}

static void
impl_Composer_show (PortableServer_Servant servant,
            CORBA_Environment *ev)
{
    BonoboObject *bonobo_object;
    EvolutionComposer *composer;

    bonobo_object = bonobo_object_from_servant (servant);
    composer = EVOLUTION_COMPOSER (bonobo_object);

    gtk_widget_show (GTK_WIDGET (composer->composer));
}

static void
impl_Composer_send (PortableServer_Servant servant,
            CORBA_Environment *ev)
{
    BonoboObject *bonobo_object;
    EvolutionComposer *composer;

    bonobo_object = bonobo_object_from_servant (servant);
    composer = EVOLUTION_COMPOSER (bonobo_object);

    send_cb (composer->composer, NULL);
}

POA_GNOME_Evolution_Composer__epv *
evolution_composer_get_epv (void)
{
    POA_GNOME_Evolution_Composer__epv *epv;

    epv = g_new0 (POA_GNOME_Evolution_Composer__epv, 1);
    epv->setHeaders  = impl_Composer_set_headers;
    epv->setBodyText = impl_Composer_set_body_text;
    epv->attachMIME  = impl_Composer_attach_MIME;
    epv->attachData  = impl_Composer_attach_data;
    epv->show        = impl_Composer_show;
    epv->send        = impl_Composer_send;

    return epv;
}


/* GtkObject stuff */

static void
destroy (GtkObject *object)
{
    EvolutionComposer *composer = EVOLUTION_COMPOSER (object);

    if (composer->composer)
        gtk_object_unref (GTK_OBJECT (composer->composer));

    GTK_OBJECT_CLASS (parent_class)->destroy (object);
}

static void
class_init (EvolutionComposerClass *klass)
{
    GtkObjectClass *object_class;

    object_class = GTK_OBJECT_CLASS (klass);
    object_class->destroy = destroy;

    parent_class = gtk_type_class (bonobo_object_get_type ());

    Composer_vepv.Bonobo_Unknown_epv = bonobo_object_get_epv ();
    Composer_vepv.GNOME_Evolution_Composer_epv = evolution_composer_get_epv ();
}

static void
init (EvolutionComposer *composer)
{
    const MailConfigAccount *account;
    gboolean send_html;
    gchar *sig_file = NULL;

    account = mail_config_get_default_account ();
    send_html = mail_config_get_send_html ();

    if (account->id)
        sig_file = account->id->signature;
    
    if (sig_file)
        composer->composer = e_msg_composer_new_with_sig_file (sig_file, send_html);
    else
        composer->composer = e_msg_composer_new ();
    
    gtk_signal_connect (GTK_OBJECT (composer->composer), "send",
                GTK_SIGNAL_FUNC (send_cb), NULL);
    gtk_signal_connect (GTK_OBJECT (composer->composer), "postpone",
                GTK_SIGNAL_FUNC (postpone_cb), NULL);
}

#if 0
static Bonobo_ItemContainer_ObjectNames *
enum_objects (BonoboItemHandler *handler, gpointer data, CORBA_Environment *ev)
{
}
#endif

static Bonobo_Unknown 
get_object (BonoboItemHandler *h, const char *item_name, gboolean only_if_exists,
        gpointer data, CORBA_Environment *ev)
{
    EvolutionComposer *composer = data;
    GSList *options, *l;
    
    options = bonobo_item_option_parse (item_name);
    for (l = options; l; l = l->next){
        BonoboItemOption *option = l->data;

        if (strcmp (option->key, "visible") == 0){
            gboolean show = 1;
            
            if (option->value)
                show = atoi (option->value);

            if (show)
                gtk_widget_show (GTK_WIDGET (composer->composer));
            else
                gtk_widget_hide (GTK_WIDGET (composer->composer));
        }
    }
    return bonobo_object_dup_ref (
        BONOBO_OBJECT (composer)->corba_objref, ev);
}

void
evolution_composer_construct (EvolutionComposer *composer,
                  GNOME_Evolution_Composer corba_object)
{
    BonoboObject *item_handler;
    
    g_return_if_fail (composer != NULL);
    g_return_if_fail (EVOLUTION_IS_COMPOSER (composer));
    g_return_if_fail (corba_object != CORBA_OBJECT_NIL);

    bonobo_object_construct (BONOBO_OBJECT (composer), corba_object);

    item_handler = BONOBO_OBJECT (
        bonobo_item_handler_new (NULL, get_object, composer));
    bonobo_object_add_interface (BONOBO_OBJECT (composer), BONOBO_OBJECT (item_handler));
}

EvolutionComposer *
evolution_composer_new (void)
{
    EvolutionComposer *new;
    POA_GNOME_Evolution_Composer *servant;
    CORBA_Environment ev;
    GNOME_Evolution_Composer corba_object;
    
    servant = (POA_GNOME_Evolution_Composer *) g_new0 (BonoboObjectServant, 1);
    servant->vepv = &Composer_vepv;

    CORBA_exception_init (&ev);
    POA_GNOME_Evolution_Composer__init ((PortableServer_Servant) servant, &ev);
    if (ev._major != CORBA_NO_EXCEPTION) {
        g_free (servant);
        CORBA_exception_free (&ev);
        return NULL;
    }
    CORBA_exception_free (&ev);

    new = gtk_type_new (evolution_composer_get_type ());
    corba_object = bonobo_object_activate_servant (BONOBO_OBJECT (new),
                               servant);
    evolution_composer_construct (new, corba_object);

    return new;
}

E_MAKE_TYPE (evolution_composer, "EvolutionComposer", EvolutionComposer, class_init, init, PARENT_TYPE)


#define GNOME_EVOLUTION_MAIL_COMPOSER_FACTORY_ID "OAFIID:GNOME_Evolution_Mail_ComposerFactory"

static BonoboObject *
factory_fn (BonoboGenericFactory *factory, void *closure)
{
    if (!mail_config_is_configured ()) {
        e_notice (NULL, GNOME_MESSAGE_BOX_ERROR,
              _("Could not create composer window, because you "
                "have not yet\nconfigured any identities in the "
                "mail component."));
        return NULL;
    }
    return BONOBO_OBJECT (evolution_composer_new ());
}

void
evolution_composer_factory_init (void (*send) (EMsgComposer *, gpointer),
                 void (*postpone) (EMsgComposer *, gpointer))
{
    if (bonobo_generic_factory_new (GNOME_EVOLUTION_MAIL_COMPOSER_FACTORY_ID,
                    factory_fn, NULL) == NULL) {
        e_notice (NULL, GNOME_MESSAGE_BOX_ERROR,
              _("Cannot initialize Evolution's composer."));
        exit (1);
    }

    send_cb = send;
    postpone_cb = postpone;
}