path: root/composer/e-msg-composer-hdrs.c

/* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 8; tab-width: 8 -*- */
/* msg-composer-hdrs.c
 *
 * Copyright (C) 1999 Ximian, Inc.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of version 2 of the GNU General Public
 * published by the Free Software Foundation; either version 2 of the
 * License as published by the Free Software Foundation.
 *
 * 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: Ettore Perazzoli
 */


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

#include <string.h>

#include <bonobo/bonobo-control.h>
#include <bonobo/bonobo-widget.h>

#include <gtk/gtkmenuitem.h>
#include <gtk/gtkoptionmenu.h>
#include <gtk/gtktooltips.h>
#include <libgnomeui/gnome-uidefs.h>

#include "Composer.h"

#include <gtk/gtkmenuitem.h>
#include <gtk/gtkoptionmenu.h>
#include <gtk/gtktooltips.h>

#include <gconf/gconf.h>
#include <gconf/gconf-client.h>

#include <gal/e-text/e-entry.h>

#include <camel/camel.h>
#include "e-msg-composer-hdrs.h"
#include "mail/mail-config.h"
#include "mail/em-folder-selection-button.h"



/* Indexes in the GtkTable assigned to various items */

#define LINE_FROM    0
#define LINE_REPLYTO 1
#define LINE_TO      2
#define LINE_CC      3
#define LINE_BCC     4
#define LINE_POSTTO  5
#define LINE_SUBJECT 6


typedef struct {
    GtkWidget *label;
    GtkWidget *entry;
} EMsgComposerHdrPair;

struct _EMsgComposerHdrsPrivate {
    GNOME_Evolution_Addressbook_SelectNames corba_select_names;
    
    /* ui component */
    BonoboUIComponent *uic;
    
    /* The tooltips.  */
    GtkTooltips *tooltips;
    
    EAccountList *accounts;
    GSList *from_options;
    
    /* Standard headers.  */
    EMsgComposerHdrPair from, reply_to, to, cc, bcc, post_to, subject;
};


static GtkTableClass *parent_class = NULL;

enum {
    SHOW_ADDRESS_DIALOG,
    SUBJECT_CHANGED,
    HDRS_CHANGED,
    FROM_CHANGED,
    LAST_SIGNAL
};

static int signals[LAST_SIGNAL];


static gboolean
setup_corba (EMsgComposerHdrs *hdrs)
{
    EMsgComposerHdrsPrivate *priv;
    CORBA_Environment ev;
    
    priv = hdrs->priv;
    
    g_assert (priv->corba_select_names == CORBA_OBJECT_NIL);
    
    CORBA_exception_init (&ev);
    
    priv->corba_select_names = bonobo_activation_activate_from_id (SELECT_NAMES_OAFIID, 0, NULL, &ev);
    
    /* OAF seems to be broken -- it can return a CORBA_OBJECT_NIL without
           raising an exception in `ev'.  */
    if (ev._major != CORBA_NO_EXCEPTION || priv->corba_select_names == CORBA_OBJECT_NIL) {
        CORBA_exception_free (&ev);
        return FALSE;
    }
    
    CORBA_exception_free (&ev);
    
    return TRUE;
}

typedef struct {
    EMsgComposerHdrs *hdrs;
    char *string;
} EMsgComposerHdrsAndString;

static void
e_msg_composer_hdrs_and_string_free (EMsgComposerHdrsAndString *emchas)
{
    if (emchas->hdrs)
        g_object_unref (emchas->hdrs);
    g_free (emchas->string);
    g_free (emchas);
}

static EMsgComposerHdrsAndString *
e_msg_composer_hdrs_and_string_create (EMsgComposerHdrs *hdrs, const char *string)
{
    EMsgComposerHdrsAndString *emchas;
    
    emchas = g_new (EMsgComposerHdrsAndString, 1);
    emchas->hdrs = hdrs;
    emchas->string = g_strdup (string);
    if (emchas->hdrs)
        g_object_ref (emchas->hdrs);
    
    return emchas;
}

static void
address_button_clicked_cb (GtkButton *button, gpointer data)
{
    EMsgComposerHdrsAndString *emchas;
    EMsgComposerHdrs *hdrs;
    EMsgComposerHdrsPrivate *priv;
    CORBA_Environment ev;
    
    emchas = data;
    hdrs = emchas->hdrs;
    priv = hdrs->priv;
    
    CORBA_exception_init (&ev);
    
    GNOME_Evolution_Addressbook_SelectNames_activateDialog (
        priv->corba_select_names, emchas->string, &ev);
    
    CORBA_exception_free (&ev);
}

static void
from_changed (GtkWidget *item, gpointer data)
{
    EMsgComposerHdrs *hdrs = E_MSG_COMPOSER_HDRS (data);
    const char *reply_to;
    
    hdrs->account = g_object_get_data ((GObject *) item, "account");
    
    /* we do this rather than calling e_msg_composer_hdrs_set_reply_to()
       because we don't want to change the visibility of the header */
    reply_to = hdrs->account->id->reply_to;
    gtk_entry_set_text (GTK_ENTRY (hdrs->priv->reply_to.entry), reply_to ? reply_to : "");
    
    g_signal_emit (hdrs, signals [FROM_CHANGED], 0);
}

static void
account_added_cb (EAccountList *accounts, EAccount *account, EMsgComposerHdrs *hdrs)
{
    GtkWidget *item, *menu, *omenu, *toplevel;
    char *label;
    
    omenu = e_msg_composer_hdrs_get_from_omenu (hdrs);
    menu = gtk_option_menu_get_menu (GTK_OPTION_MENU (omenu));
    
    label = g_strdup_printf ("%s <%s>", account->id->name, account->id->address);
    item = gtk_menu_item_new_with_label (label);
    gtk_widget_show (item);
    g_free (label);
    
    g_object_ref (account);
    g_object_set_data ((GObject *) item, "account", account);
    g_signal_connect (item, "activate", G_CALLBACK (from_changed), hdrs);
    
    /* this is so we can later set which one we want */
    hdrs->priv->from_options = g_slist_append (hdrs->priv->from_options, item);
    
    gtk_menu_shell_append (GTK_MENU_SHELL (menu), item);
    
    toplevel = gtk_widget_get_toplevel ((GtkWidget *) hdrs);
    gtk_widget_set_sensitive (toplevel, TRUE);
}

static void
account_changed_cb (EAccountList *accounts, EAccount *account, EMsgComposerHdrs *hdrs)
{
    GtkWidget *item, *label;
    EAccount *acnt;
    GSList *node;
    char *text;
    
    node = hdrs->priv->from_options;
    while (node != NULL) {
        item = node->data;
        acnt = g_object_get_data ((GObject *) item, "account");
        if (acnt == account) {
            text = g_strdup_printf ("%s <%s>", account->id->name, account->id->address);
            label = gtk_bin_get_child ((GtkBin *) item);
            gtk_label_set_text ((GtkLabel *) label, text);
            g_free (text);
            break;
        }
        
        node = node->next;
    }
}

static void
account_removed_cb (EAccountList *accounts, EAccount *account, EMsgComposerHdrs *hdrs)
{
    struct _EMsgComposerHdrsPrivate *priv = hdrs->priv;
    GtkWidget *item, *omenu, *toplevel, *dialog;
    EAccount *acnt;
    GSList *node;
    
    node = priv->from_options;
    while (node != NULL) {
        item = node->data;
        acnt = g_object_get_data ((GObject *) item, "account");
        if (acnt == account) {
            if (hdrs->account == account)
                hdrs->account = NULL;
            
            priv->from_options = g_slist_remove_link (priv->from_options, node);
            g_slist_free_1 (node);
            g_object_unref (account);
            gtk_widget_destroy (item);
            break;
        }
        
        node = node->next;
    }
    
    if (hdrs->account == NULL) {
        if (priv->from_options) {
            /* the previously selected account was removed,
               default the new selection to the first account in
               the menu list */
            omenu = e_msg_composer_hdrs_get_from_omenu (hdrs);
            
            item = priv->from_options->data;
            gtk_option_menu_set_history (GTK_OPTION_MENU (omenu), 0);
            g_signal_emit_by_name (item, "activate", hdrs);
        } else {
            toplevel = gtk_widget_get_toplevel ((GtkWidget *) hdrs);
            gtk_widget_set_sensitive (toplevel, FALSE);
            
            dialog = gtk_message_dialog_new ((GtkWindow *) toplevel, GTK_DIALOG_MODAL |
                             GTK_DIALOG_DESTROY_WITH_PARENT,
                             GTK_MESSAGE_WARNING, GTK_BUTTONS_OK, "%s",
                             _("You need to configure an account before you can compose mail."));
        }
    }
}

static GtkWidget *
create_from_optionmenu (EMsgComposerHdrs *hdrs)
{
    struct _EMsgComposerHdrsPrivate *priv = hdrs->priv;
    GtkWidget *hbox, *omenu, *menu, *item, *first = NULL;
    int i = 0, history = 0, m, matches;
    GPtrArray *addresses;
    GConfClient *gconf;
    EAccount *account;
    EIterator *iter;
    char *uid;
    
    omenu = gtk_option_menu_new ();
    menu = gtk_menu_new ();
    
    gconf = gconf_client_get_default ();
    uid = gconf_client_get_string (gconf, "/apps/evolution/mail/default_account", NULL);
    g_object_unref (gconf);
    
    /* Make list of account email addresses */
    addresses = g_ptr_array_new ();
    iter = e_list_get_iterator ((EList *) priv->accounts);
    while (e_iterator_is_valid (iter)) {
        account = (EAccount *) e_iterator_get (iter);
        
        if (account->id->address)
            g_ptr_array_add (addresses, account->id->address);
        
        e_iterator_next (iter);
    }
    
    e_iterator_reset (iter);
    
    while (e_iterator_is_valid (iter)) {
        char *label;
        
        account = (EAccount *) e_iterator_get (iter);
        
        /* this should never ever fail */
        if (!account || !account->name || !account->id) {
            g_assert_not_reached ();
            continue;
        }
        
        if (account->id->address && *account->id->address) {
            /* If the account has a unique email address, just
             * show that. Otherwise include the account name.
             */
            for (m = matches = 0; m < addresses->len; m++) {
                if (!strcmp (account->id->address, addresses->pdata[m]))
                    matches++;
            }
            
            if (matches > 1)
                label = g_strdup_printf ("%s <%s> (%s)", account->id->name,
                             account->id->address, account->name);
            else
                label = g_strdup_printf ("%s <%s>", account->id->name, account->id->address);
            
            item = gtk_menu_item_new_with_label (label);
            g_free (label);
            
            g_object_ref (account);
            g_object_set_data ((GObject *) item, "account", account);
            g_signal_connect (item, "activate", G_CALLBACK (from_changed), hdrs);
            
            if (uid && !strcmp (account->uid, uid)) {
                first = item;
                history = i;
            }
            
            /* this is so we can later set which one we want */
            hdrs->priv->from_options = g_slist_append (hdrs->priv->from_options, item);
            
            gtk_menu_shell_append (GTK_MENU_SHELL (menu), item);
            gtk_widget_show (item);
            i++;
        }
        
        e_iterator_next (iter);
    }
    
    g_free (uid);
    g_object_unref (iter);
    
    g_ptr_array_free (addresses, TRUE);
    
    gtk_option_menu_set_menu (GTK_OPTION_MENU (omenu), menu);
    
    if (first) {
        gtk_option_menu_set_history (GTK_OPTION_MENU (omenu), history);
        g_signal_emit_by_name (first, "activate", hdrs);
    }
    
    hbox = gtk_hbox_new (FALSE, 6);
    gtk_box_pack_start_defaults (GTK_BOX (hbox), omenu);
    gtk_widget_show (omenu);
    gtk_widget_show (hbox);
    
    g_object_set_data ((GObject *) hbox, "from_menu", omenu);
    
    /* listen for changes to the account list so we can auto-update the from menu */
    g_signal_connect (priv->accounts, "account-added", G_CALLBACK (account_added_cb), hdrs);
    g_signal_connect (priv->accounts, "account-changed", G_CALLBACK (account_changed_cb), hdrs);
    g_signal_connect (priv->accounts, "account-removed", G_CALLBACK (account_removed_cb), hdrs);
    
    return hbox;
}

static void
addressbook_entry_changed (BonoboListener    *listener,
               const char        *event_name,
               const CORBA_any   *arg,
               CORBA_Environment *ev,
               gpointer           user_data)
{
    EMsgComposerHdrs *hdrs = E_MSG_COMPOSER_HDRS (user_data);
    
    g_signal_emit (hdrs, signals[HDRS_CHANGED], 0);
}

static GtkWidget *
create_addressbook_entry (EMsgComposerHdrs *hdrs, const char *name)
{
    EMsgComposerHdrsPrivate *priv;
    GNOME_Evolution_Addressbook_SelectNames corba_select_names;
    Bonobo_Control corba_control;
    GtkWidget *control_widget;
    CORBA_Environment ev;
    BonoboControlFrame *cf;
    Bonobo_PropertyBag pb = CORBA_OBJECT_NIL;
    
    priv = hdrs->priv;
    corba_select_names = priv->corba_select_names;
    
    CORBA_exception_init (&ev);
    
    GNOME_Evolution_Addressbook_SelectNames_addSection (
        corba_select_names, name, name, &ev);
    if (ev._major != CORBA_NO_EXCEPTION) {
        CORBA_exception_free (&ev);
        return NULL;
    }
    
    corba_control =
        GNOME_Evolution_Addressbook_SelectNames_getEntryBySection (
            corba_select_names, name, &ev);
    
    if (ev._major != CORBA_NO_EXCEPTION) {
        CORBA_exception_free (&ev);
        return NULL;
    }
    
    CORBA_exception_free (&ev);
    
    control_widget = bonobo_widget_new_control_from_objref (
            corba_control, bonobo_ui_component_get_container (priv->uic));
    
    cf = bonobo_widget_get_control_frame (BONOBO_WIDGET (control_widget));
    pb = bonobo_control_frame_get_control_property_bag (cf, NULL);
    
    bonobo_control_frame_set_autoactivate (cf, TRUE);

    bonobo_event_source_client_add_listener (
        pb, addressbook_entry_changed,
        "Bonobo/Property:change:entry_changed",
        NULL, hdrs);
    
    return control_widget;
}

static EMsgComposerHdrPair 
header_new_recipient (EMsgComposerHdrs *hdrs, const char *name, const char *tip)
{
    EMsgComposerHdrsPrivate *priv;
    EMsgComposerHdrPair ret;
    
    priv = hdrs->priv;
    
    ret.label = gtk_button_new_with_label (name);
    GTK_OBJECT_UNSET_FLAGS (ret.label, GTK_CAN_FOCUS);
    g_signal_connect_data (ret.label, "clicked",
                   G_CALLBACK (address_button_clicked_cb),
                   e_msg_composer_hdrs_and_string_create (hdrs, name),
                   (GClosureNotify) e_msg_composer_hdrs_and_string_free,
                   0);
    
    gtk_tooltips_set_tip (hdrs->priv->tooltips, ret.label,
                  _("Click here for the address book"),
                  NULL);
    
    ret.entry = create_addressbook_entry (hdrs, name);
    
    return ret;
}

static void
entry_changed (GtkWidget *entry, EMsgComposerHdrs *hdrs)
{
    const char *subject;
    
    subject = e_msg_composer_hdrs_get_subject (hdrs);
    g_signal_emit (hdrs, signals[SUBJECT_CHANGED], 0, subject);
    g_signal_emit (hdrs, signals[HDRS_CHANGED], 0);
}

static void
create_headers (EMsgComposerHdrs *hdrs)
{
    EMsgComposerHdrsPrivate *priv = hdrs->priv;
    
    /*
     * Reply-To:
     *
     * Create this before we call create_from_optionmenu,
     * because that causes from_changed to be called, which
     * expects the reply_to fields to be initialized.
     */
    priv->reply_to.label = gtk_label_new (_("Reply-To:"));
    priv->reply_to.entry = gtk_entry_new ();
    
    /*
     * From
     */
    priv->from.label = gtk_label_new (_("From:"));
    priv->from.entry = create_from_optionmenu (hdrs);
    
    /*
     * Subject
     */
    priv->subject.label = gtk_label_new (_("Subject:"));
    priv->subject.entry = gtk_entry_new ();
    g_signal_connect (priv->subject.entry, "changed",
              G_CALLBACK (entry_changed), hdrs);
    
    /*
     * To, CC, and Bcc
     */
    priv->to = header_new_recipient (
        hdrs, _("To:"),
        _("Enter the recipients of the message"));
    
    priv->cc = header_new_recipient (
        hdrs, _("Cc:"),
        _("Enter the addresses that will receive a carbon copy of the message"));
    
    priv->bcc = header_new_recipient (
        hdrs, _("Bcc:"),
         _("Enter the addresses that will receive a carbon copy of "
           "the message without appearing in the recipient list of "
           "the message."));

    /*
     * Post-To
     */
    priv->post_to.label = gtk_label_new (_("Post To:"));
    priv->post_to.entry = em_folder_selection_button_new (_("Posting destination"), _("Choose a folder to post the message to."));
}

static void
attach_couple (EMsgComposerHdrs *hdrs, EMsgComposerHdrPair *pair, int line)
{
    gtk_table_attach (GTK_TABLE (hdrs),
              pair->label, 0, 1,
              line, line + 1,
              GTK_FILL, GTK_FILL, 3, 3);
    
    gtk_table_attach (GTK_TABLE (hdrs),
              pair->entry, 1, 2,
              line, line + 1,
              GTK_FILL | GTK_EXPAND, 0, 3, 3);
}

static void
attach_headers (EMsgComposerHdrs *hdrs)
{
    EMsgComposerHdrsPrivate *p = hdrs->priv;
    
    attach_couple (hdrs, &p->from, LINE_FROM);
    attach_couple (hdrs, &p->reply_to, LINE_REPLYTO);
    attach_couple (hdrs, &p->to, LINE_TO);
    attach_couple (hdrs, &p->cc, LINE_CC);
    attach_couple (hdrs, &p->bcc, LINE_BCC);
    attach_couple (hdrs, &p->post_to, LINE_POSTTO);
    attach_couple (hdrs, &p->subject, LINE_SUBJECT);
}

static void
set_pair_visibility (EMsgComposerHdrs *h, EMsgComposerHdrPair *pair, int visible)
{
    if (visible & h->visible_mask) {
        gtk_widget_show (pair->label);
        gtk_widget_show (pair->entry);
    } else {
        gtk_widget_hide (pair->label);
        gtk_widget_hide (pair->entry);
    }
}

static void
headers_set_visibility (EMsgComposerHdrs *h, int visible_flags)
{
    EMsgComposerHdrsPrivate *p = h->priv;
    
    /* To is always visible if we're not doing Post-To */
    if (!(h->visible_mask & E_MSG_COMPOSER_VISIBLE_POSTTO))
        visible_flags |= E_MSG_COMPOSER_VISIBLE_TO;
    else
        visible_flags |= E_MSG_COMPOSER_VISIBLE_POSTTO;
    
    set_pair_visibility (h, &p->from, visible_flags & E_MSG_COMPOSER_VISIBLE_FROM);
    set_pair_visibility (h, &p->reply_to, visible_flags & E_MSG_COMPOSER_VISIBLE_REPLYTO);
    set_pair_visibility (h, &p->to, visible_flags & E_MSG_COMPOSER_VISIBLE_TO);
    set_pair_visibility (h, &p->cc, visible_flags & E_MSG_COMPOSER_VISIBLE_CC);
    set_pair_visibility (h, &p->bcc, visible_flags & E_MSG_COMPOSER_VISIBLE_BCC);
    set_pair_visibility (h, &p->post_to, visible_flags & E_MSG_COMPOSER_VISIBLE_POSTTO);
    set_pair_visibility (h, &p->subject, visible_flags & E_MSG_COMPOSER_VISIBLE_SUBJECT);
}

static void
headers_set_sensitivity (EMsgComposerHdrs *h)
{
    bonobo_ui_component_set_prop (
        h->priv->uic, "/commands/ViewFrom", "sensitive",
        h->visible_mask & E_MSG_COMPOSER_VISIBLE_FROM ? "1" : "0", NULL);
    
    bonobo_ui_component_set_prop (
        h->priv->uic, "/commands/ViewReplyTo", "sensitive",
        h->visible_mask & E_MSG_COMPOSER_VISIBLE_REPLYTO ? "1" : "0", NULL);
    
    bonobo_ui_component_set_prop (
        h->priv->uic, "/commands/ViewCC", "sensitive",
        h->visible_mask & E_MSG_COMPOSER_VISIBLE_CC ? "1" : "0", NULL);
    
    bonobo_ui_component_set_prop (
        h->priv->uic, "/commands/ViewBCC", "sensitive",
        h->visible_mask & E_MSG_COMPOSER_VISIBLE_BCC ? "1" : "0", NULL);
}

void
e_msg_composer_hdrs_set_visible_mask (EMsgComposerHdrs *hdrs, int visible_mask)
{
    g_return_if_fail (E_IS_MSG_COMPOSER_HDRS (hdrs));
    
    hdrs->visible_mask = visible_mask;
    headers_set_sensitivity (hdrs);
}

void
e_msg_composer_hdrs_set_visible (EMsgComposerHdrs *hdrs, int visible_flags)
{
    g_return_if_fail (E_IS_MSG_COMPOSER_HDRS (hdrs));
    
    headers_set_visibility (hdrs, visible_flags);
    gtk_widget_queue_resize (GTK_WIDGET (hdrs));
}

static void
setup_headers (EMsgComposerHdrs *hdrs, int visible_flags)
{
    create_headers (hdrs);
    attach_headers (hdrs);
    
    headers_set_sensitivity (hdrs);
    headers_set_visibility (hdrs, visible_flags);
}


/* GtkObject methods.  */

static void
destroy (GtkObject *object)
{
    EMsgComposerHdrs *hdrs;
    EMsgComposerHdrsPrivate *priv;
    GSList *l, *n;
    
    hdrs = E_MSG_COMPOSER_HDRS (object);
    priv = hdrs->priv;
    
    if (priv) {
        if (priv->corba_select_names != CORBA_OBJECT_NIL) {
            CORBA_Environment ev;
            CORBA_exception_init (&ev);
            bonobo_object_release_unref (priv->corba_select_names, &ev);
            CORBA_exception_free (&ev);
            priv->corba_select_names = CORBA_OBJECT_NIL;
        }
        
        if (priv->tooltips) {
            gtk_object_destroy (GTK_OBJECT (priv->tooltips));
            g_object_unref (priv->tooltips);
            priv->tooltips = NULL;
        }
        
        if (priv->accounts) {
            g_signal_handlers_disconnect_matched(priv->accounts, G_SIGNAL_MATCH_DATA, 0, 0, NULL, NULL, hdrs);
            g_object_unref (priv->accounts);
            priv->accounts = NULL;
        }
        
        l = priv->from_options;
        while (l) {
            EAccount *account;
            GtkWidget *item = l->data;
            
            account = g_object_get_data ((GObject *) item, "account");
            g_object_unref (account);
            
            n = l->next;
            g_slist_free_1 (l);
            l = n;
        }
        
        priv->from_options = NULL;
        
        g_free (priv);
        hdrs->priv = NULL;
    }
    
    if (GTK_OBJECT_CLASS (parent_class)->destroy != NULL)
        (* GTK_OBJECT_CLASS (parent_class)->destroy) (object);
}


static void
class_init (EMsgComposerHdrsClass *class)
{
    GtkObjectClass *object_class;
    
    object_class = GTK_OBJECT_CLASS (class);
    object_class->destroy = destroy;
    
    parent_class = g_type_class_ref (gtk_table_get_type ());
    
    signals[SHOW_ADDRESS_DIALOG] =
        g_signal_new ("show_address_dialog",
                  E_TYPE_MSG_COMPOSER_HDRS,
                  G_SIGNAL_RUN_LAST,
                  G_STRUCT_OFFSET(EMsgComposerHdrsClass, show_address_dialog),
                  NULL, NULL,
                  g_cclosure_marshal_VOID__VOID,
                  G_TYPE_NONE, 0);
    
    signals[SUBJECT_CHANGED] =
        g_signal_new ("subject_changed",
                  E_TYPE_MSG_COMPOSER_HDRS,
                  G_SIGNAL_RUN_LAST,
                  G_STRUCT_OFFSET(EMsgComposerHdrsClass, subject_changed),
                  NULL, NULL,
                  g_cclosure_marshal_VOID__STRING,
                  G_TYPE_NONE,
                  1, G_TYPE_STRING);
    
    signals[HDRS_CHANGED] =
        g_signal_new ("hdrs_changed",
                  E_TYPE_MSG_COMPOSER_HDRS,
                  G_SIGNAL_RUN_LAST,
                  G_STRUCT_OFFSET(EMsgComposerHdrsClass, hdrs_changed),
                  NULL, NULL,
                  g_cclosure_marshal_VOID__VOID,
                  G_TYPE_NONE, 0);
    
    signals[FROM_CHANGED] =
        g_signal_new ("from_changed",
                  E_TYPE_MSG_COMPOSER_HDRS,
                  G_SIGNAL_RUN_LAST,
                  G_STRUCT_OFFSET(EMsgComposerHdrsClass, from_changed),
                  NULL, NULL,
                  g_cclosure_marshal_VOID__VOID,
                  G_TYPE_NONE, 0);
}

static void
init (EMsgComposerHdrs *hdrs)
{
    EMsgComposerHdrsPrivate *priv;
    
    priv = g_new0 (EMsgComposerHdrsPrivate, 1);
    
    priv->tooltips = gtk_tooltips_new ();
    g_object_ref (priv->tooltips);
    gtk_object_sink ((GtkObject *) priv->tooltips);
    
    priv->accounts = mail_config_get_accounts ();
    g_object_ref (priv->accounts);
    
    hdrs->priv = priv;
}


GType
e_msg_composer_hdrs_get_type (void)
{
    static GType type = 0;
    
    if (type == 0) {
        static const GTypeInfo info = {
            sizeof (EMsgComposerHdrsClass),
            NULL,
            NULL,
            (GClassInitFunc) class_init,
            NULL,
            NULL,
            sizeof (EMsgComposerHdrs),
            0,
            (GInstanceInitFunc) init,
        };
        
        type = g_type_register_static (gtk_table_get_type (), "EMsgComposerHdrs", &info, 0);
    }
    
    return type;
}

GtkWidget *
e_msg_composer_hdrs_new (BonoboUIComponent *uic, int visible_mask, int visible_flags)
{
    EMsgComposerHdrs *new;
    EMsgComposerHdrsPrivate *priv;
    
    new = g_object_new (e_msg_composer_hdrs_get_type (), NULL);
    priv = new->priv;
    priv->uic = uic;

    g_object_ref (new);
    gtk_object_sink (GTK_OBJECT (new));

    if (!setup_corba (new)) {
        g_object_unref (new);
        return NULL;
    }
    
    new->visible_mask = visible_mask;
    
    setup_headers (new, visible_flags);
    
    return GTK_WIDGET (new);
}

static void
set_recipients_from_destv (CamelMimeMessage *msg,
               EABDestination **to_destv,
               EABDestination **cc_destv,
               EABDestination **bcc_destv,
               gboolean redirect)
{
    CamelInternetAddress *to_addr;
    CamelInternetAddress *cc_addr;
    CamelInternetAddress *bcc_addr;
    CamelInternetAddress *target;
    const char *text_addr, *header;
    gboolean seen_hidden_list = FALSE;
    int i;
    
    to_addr  = camel_internet_address_new ();
    cc_addr  = camel_internet_address_new ();
    bcc_addr = camel_internet_address_new ();
    
    if (to_destv) {
        for (i = 0; to_destv[i] != NULL; ++i) {
            text_addr = eab_destination_get_address (to_destv[i]);
            
            if (text_addr && *text_addr) {
                target = to_addr;
                if (eab_destination_is_evolution_list (to_destv[i])
                    && !eab_destination_list_show_addresses (to_destv[i])) {
                    target = bcc_addr;
                    seen_hidden_list = TRUE;
                }
                
                camel_address_decode (CAMEL_ADDRESS (target), text_addr);
            }
        }
    }
    
    if (cc_destv) {
        for (i = 0; cc_destv[i] != NULL; ++i) {
            text_addr = eab_destination_get_address (cc_destv[i]);
            if (text_addr && *text_addr) {
                target = cc_addr;
                if (eab_destination_is_evolution_list (cc_destv[i])
                    && !eab_destination_list_show_addresses (cc_destv[i])) {
                    target = bcc_addr;
                    seen_hidden_list = TRUE;
                }
                
                camel_address_decode (CAMEL_ADDRESS (target), text_addr);
            }
        }
    }
    
    if (bcc_destv) {
        for (i = 0; bcc_destv[i] != NULL; ++i) {
            text_addr = eab_destination_get_address (bcc_destv[i]);
            if (text_addr && *text_addr) {              
                camel_address_decode (CAMEL_ADDRESS (bcc_addr), text_addr);
            }
        }
    }
    
    header = redirect ? CAMEL_RECIPIENT_TYPE_RESENT_TO : CAMEL_RECIPIENT_TYPE_TO;
    if (camel_address_length (CAMEL_ADDRESS (to_addr)) > 0) {
        camel_mime_message_set_recipients (msg, header, to_addr);
    } else if (seen_hidden_list) {
        camel_medium_set_header (CAMEL_MEDIUM (msg), header, "Undisclosed-Recipient:;");
    }
    
    header = redirect ? CAMEL_RECIPIENT_TYPE_RESENT_CC : CAMEL_RECIPIENT_TYPE_CC;
    if (camel_address_length (CAMEL_ADDRESS (cc_addr)) > 0) {
        camel_mime_message_set_recipients (msg, header, cc_addr);
    }
    
    header = redirect ? CAMEL_RECIPIENT_TYPE_RESENT_BCC : CAMEL_RECIPIENT_TYPE_BCC;
    if (camel_address_length (CAMEL_ADDRESS (bcc_addr)) > 0) {
        camel_mime_message_set_recipients (msg, header, bcc_addr);
    }
    
    camel_object_unref (to_addr);
    camel_object_unref (cc_addr);
    camel_object_unref (bcc_addr);
}

static void
e_msg_composer_hdrs_to_message_internal (EMsgComposerHdrs *hdrs,
                     CamelMimeMessage *msg,
                     gboolean redirect)
{
    EABDestination **to_destv, **cc_destv, **bcc_destv;
    CamelInternetAddress *addr;
    const char *subject;
    char *header;
    
    g_return_if_fail (E_IS_MSG_COMPOSER_HDRS (hdrs));
    g_return_if_fail (CAMEL_IS_MIME_MESSAGE (msg));
    
    subject = e_msg_composer_hdrs_get_subject (hdrs);
    camel_mime_message_set_subject (msg, subject);
    
    addr = e_msg_composer_hdrs_get_from (hdrs);
    if (redirect) {
        header = camel_address_encode (CAMEL_ADDRESS (addr));
        camel_medium_set_header (CAMEL_MEDIUM (msg), "Resent-From", header);
        g_free (header);
    } else {
        camel_mime_message_set_from (msg, addr);
    }
    camel_object_unref (addr);
    
    addr = e_msg_composer_hdrs_get_reply_to (hdrs);
    if (addr) {
        camel_mime_message_set_reply_to (msg, addr);
        camel_object_unref (addr);
    }
    
    if (hdrs->visible_mask & E_MSG_COMPOSER_VISIBLE_MASK_RECIPIENTS) {
        to_destv  = e_msg_composer_hdrs_get_to (hdrs);
        cc_destv  = e_msg_composer_hdrs_get_cc (hdrs);
        bcc_destv = e_msg_composer_hdrs_get_bcc (hdrs);
        
        /* Attach destinations to the message. */
        
        set_recipients_from_destv (msg, to_destv, cc_destv, bcc_destv, redirect);
        
        eab_destination_freev (to_destv);
        eab_destination_freev (cc_destv);
        eab_destination_freev (bcc_destv);
    }
    
    if (hdrs->visible_mask & E_MSG_COMPOSER_VISIBLE_POSTTO) {
        header = e_msg_composer_hdrs_get_post_to (hdrs);
        camel_medium_set_header (CAMEL_MEDIUM (msg), "X-Evolution-PostTo", header);
        g_free (header);
    }
}


void
e_msg_composer_hdrs_to_message (EMsgComposerHdrs *hdrs,
                CamelMimeMessage *msg)
{
    e_msg_composer_hdrs_to_message_internal (hdrs, msg, FALSE);
}


void
e_msg_composer_hdrs_to_redirect (EMsgComposerHdrs *hdrs,
                 CamelMimeMessage *msg)
{
    e_msg_composer_hdrs_to_message_internal (hdrs, msg, TRUE);
}


/* FIXME: yea, this could be better... but it's doubtful it'll be used much */
void
e_msg_composer_hdrs_set_from_account (EMsgComposerHdrs *hdrs,
                      const char *account_name)
{
    GtkOptionMenu *omenu;
    GConfClient *gconf;
    GtkWidget *item;
    char *uid = NULL;
    GSList *l;
    int i = 0;
    
    g_return_if_fail (E_IS_MSG_COMPOSER_HDRS (hdrs));
    
    omenu = GTK_OPTION_MENU (e_msg_composer_hdrs_get_from_omenu (hdrs));
    
    if (!account_name) {
        gconf = gconf_client_get_default ();
        uid = gconf_client_get_string (gconf, "/apps/evolution/mail/default_account", NULL);
        g_object_unref (gconf);
    }
    
    /* find the item that represents the account and activate it */
    l = hdrs->priv->from_options;
    while (l) {
        EAccount *account;
        item = l->data;
        
        account = g_object_get_data ((GObject *) item, "account");
        if (account_name) {
            if (account->name && !strcmp (account_name, account->name)) {
                /* set the correct optionlist item */
                gtk_option_menu_set_history (omenu, i);
                g_signal_emit_by_name (item, "activate", hdrs);
                g_free (uid);
                
                return;
            }
        } else if (uid && !strcmp (account->uid, uid)) {
            /* set the default optionlist item */
            gtk_option_menu_set_history (omenu, i);
            g_signal_emit_by_name (item, "activate", hdrs);
            g_free (uid);
            
            return;
        }
        
        l = l->next;
        i++;
    }
    
    g_free (uid);
}

void
e_msg_composer_hdrs_set_reply_to (EMsgComposerHdrs *hdrs,
                  const char *reply_to)
{
    g_return_if_fail (E_IS_MSG_COMPOSER_HDRS (hdrs));
    
    gtk_entry_set_text (GTK_ENTRY (hdrs->priv->reply_to.entry), reply_to ? reply_to : "");
    
    if (reply_to && *reply_to)
        set_pair_visibility (hdrs, &hdrs->priv->cc, TRUE);
}

void
e_msg_composer_hdrs_set_to (EMsgComposerHdrs *hdrs,
                EABDestination **to_destv)
{
    char *str;
    
    g_return_if_fail (E_IS_MSG_COMPOSER_HDRS (hdrs));
    
    str = eab_destination_exportv (to_destv);
    bonobo_widget_set_property (BONOBO_WIDGET (hdrs->priv->to.entry), "destinations", TC_CORBA_string, str ? str : "", NULL); 
    g_free (str);
}

void
e_msg_composer_hdrs_set_cc (EMsgComposerHdrs *hdrs,
                EABDestination **cc_destv)
{
    char *str;
    
    g_return_if_fail (E_IS_MSG_COMPOSER_HDRS (hdrs));
    
    str = eab_destination_exportv (cc_destv);
    bonobo_widget_set_property (BONOBO_WIDGET (hdrs->priv->cc.entry), "destinations", TC_CORBA_string, str ? str :"", NULL);
    if (str && *str)
        set_pair_visibility (hdrs, &hdrs->priv->cc, TRUE);
    g_free (str);
}

void
e_msg_composer_hdrs_set_bcc (EMsgComposerHdrs *hdrs,
                 EABDestination **bcc_destv)
{
    char *str;
    
    g_return_if_fail (E_IS_MSG_COMPOSER_HDRS (hdrs));
    
    str = eab_destination_exportv (bcc_destv);
    bonobo_widget_set_property (BONOBO_WIDGET (hdrs->priv->bcc.entry), "destinations", TC_CORBA_string, str ? str : "", NULL); 
    if (str && *str)
        set_pair_visibility (hdrs, &hdrs->priv->bcc, TRUE);
    g_free (str);
}


void
e_msg_composer_hdrs_set_post_to (EMsgComposerHdrs *hdrs,
                 const char *post_to)
{
    g_return_if_fail (E_IS_MSG_COMPOSER_HDRS (hdrs));
    g_return_if_fail (post_to != NULL);
    
    em_folder_selection_button_set_selection ((EMFolderSelectionButton *) hdrs->priv->post_to.entry, post_to);
}


void
e_msg_composer_hdrs_set_subject (EMsgComposerHdrs *hdrs,
                 const char *subject)
{
    g_return_if_fail (E_IS_MSG_COMPOSER_HDRS (hdrs));
    g_return_if_fail (subject != NULL);
    
    gtk_entry_set_text ((GtkEntry *) hdrs->priv->subject.entry, subject);
}


CamelInternetAddress *
e_msg_composer_hdrs_get_from (EMsgComposerHdrs *hdrs)
{
    CamelInternetAddress *addr;
    EAccount *account;
    
    g_return_val_if_fail (E_IS_MSG_COMPOSER_HDRS (hdrs), NULL);
    
    if (!(account = hdrs->account)) {
        /* FIXME: perhaps we should try the default account? */
        return NULL;
    }
    
    addr = camel_internet_address_new ();
    camel_internet_address_add (addr, account->id->name, account->id->address);
    
    return addr;
}

CamelInternetAddress *
e_msg_composer_hdrs_get_reply_to (EMsgComposerHdrs *hdrs)
{
    CamelInternetAddress *addr;
    const char *reply_to;
    
    g_return_val_if_fail (E_IS_MSG_COMPOSER_HDRS (hdrs), NULL);
    
    reply_to = gtk_entry_get_text (GTK_ENTRY (hdrs->priv->reply_to.entry));
    
    if (!reply_to || *reply_to == '\0')
        return NULL;
    
    addr = camel_internet_address_new ();
    if (camel_address_unformat (CAMEL_ADDRESS (addr), reply_to) == -1) {
        camel_object_unref (CAMEL_OBJECT (addr));
        return NULL;
    }
    
    return addr;
}

EABDestination **
e_msg_composer_hdrs_get_to (EMsgComposerHdrs *hdrs)
{
    char *str = NULL;
    EABDestination **destv = NULL;
    
    g_return_val_if_fail (E_IS_MSG_COMPOSER_HDRS (hdrs), NULL);
    
    bonobo_widget_get_property (BONOBO_WIDGET (hdrs->priv->to.entry), "destinations", TC_CORBA_string, &str, NULL); 
    
    if (str != NULL) {
        destv = eab_destination_importv (str);
        g_free (str);
    }
    
    return destv;
}

EABDestination **
e_msg_composer_hdrs_get_cc (EMsgComposerHdrs *hdrs)
{
    char *str = NULL;
    EABDestination **destv = NULL;
    
    g_return_val_if_fail (E_IS_MSG_COMPOSER_HDRS (hdrs), NULL);
    
    bonobo_widget_get_property (BONOBO_WIDGET (hdrs->priv->cc.entry), "destinations", TC_CORBA_string, &str, NULL); 
    
    if (str != NULL) {
        destv = eab_destination_importv (str);
        g_free (str);
    }
    
    return destv;
}

EABDestination **
e_msg_composer_hdrs_get_bcc (EMsgComposerHdrs *hdrs)
{
    char *str = NULL;
    EABDestination **destv = NULL;
    
    g_return_val_if_fail (E_IS_MSG_COMPOSER_HDRS (hdrs), NULL);
    
    bonobo_widget_get_property (BONOBO_WIDGET (hdrs->priv->bcc.entry), "destinations", TC_CORBA_string, &str, NULL); 
    
    if (str != NULL) {
        destv = eab_destination_importv (str);
        g_free (str);
    }
    
    return destv;
}

EABDestination **
e_msg_composer_hdrs_get_recipients (EMsgComposerHdrs *hdrs)
{
    EABDestination **to_destv;
    EABDestination **cc_destv;
    EABDestination **bcc_destv;
    EABDestination **recip_destv;
    int i, j, n;
    
    g_return_val_if_fail (E_IS_MSG_COMPOSER_HDRS (hdrs), NULL);
    
    to_destv  = e_msg_composer_hdrs_get_to (hdrs);
    cc_destv  = e_msg_composer_hdrs_get_cc (hdrs);
    bcc_destv = e_msg_composer_hdrs_get_bcc (hdrs);
    
    n = 0;
    
    for (i = 0; to_destv && to_destv[i] != NULL; i++, n++);
    for (i = 0; cc_destv && cc_destv[i] != NULL; i++, n++);
    for (i = 0; bcc_destv && bcc_destv[i] != NULL; i++, n++);
    
    if (n == 0)
        return NULL;
    
    recip_destv = g_new (EABDestination *, n + 1);
    
    j = 0;
    
    for (i = 0; to_destv && to_destv[i] != NULL; i++, j++)
        recip_destv[j] = to_destv[i];
    for (i = 0; cc_destv && cc_destv[i] != NULL; i++, j++)
        recip_destv[j] = cc_destv[i];
    for (i = 0; bcc_destv && bcc_destv[i] != NULL; i++, j++)
        recip_destv[j] = bcc_destv[i];
    
    g_assert (j == n);
    recip_destv[j] = NULL;
    
    g_free (to_destv);
    g_free (cc_destv);
    g_free (bcc_destv);
    
    return recip_destv;
}


char *
e_msg_composer_hdrs_get_post_to (EMsgComposerHdrs *hdrs)
{
    const char *uri;
    
    g_return_val_if_fail (E_IS_MSG_COMPOSER_HDRS (hdrs), NULL);
    
    uri = em_folder_selection_button_get_selection ((EMFolderSelectionButton *) hdrs->priv->post_to.entry);
    
    return g_strdup (uri);
}


const char *
e_msg_composer_hdrs_get_subject (EMsgComposerHdrs *hdrs)
{
    g_return_val_if_fail (E_IS_MSG_COMPOSER_HDRS (hdrs), NULL);
    
    return gtk_entry_get_text ((GtkEntry *) hdrs->priv->subject.entry);
}


GtkWidget *
e_msg_composer_hdrs_get_reply_to_entry (EMsgComposerHdrs *hdrs)
{
    g_return_val_if_fail (E_IS_MSG_COMPOSER_HDRS (hdrs), NULL);
    
    return hdrs->priv->reply_to.entry;
}

GtkWidget *
e_msg_composer_hdrs_get_to_entry (EMsgComposerHdrs *hdrs)
{
    g_return_val_if_fail (E_IS_MSG_COMPOSER_HDRS (hdrs), NULL);
    
    return hdrs->priv->to.entry;
}

GtkWidget *
e_msg_composer_hdrs_get_cc_entry (EMsgComposerHdrs *hdrs)
{
    g_return_val_if_fail (E_IS_MSG_COMPOSER_HDRS (hdrs), NULL);
    
    return hdrs->priv->cc.entry;
}

GtkWidget *
e_msg_composer_hdrs_get_bcc_entry (EMsgComposerHdrs *hdrs)
{
    g_return_val_if_fail (E_IS_MSG_COMPOSER_HDRS (hdrs), NULL);
    
    return hdrs->priv->bcc.entry;
}

GtkWidget *
e_msg_composer_hdrs_get_post_to_label (EMsgComposerHdrs *hdrs)
{
    g_return_val_if_fail (E_IS_MSG_COMPOSER_HDRS (hdrs), NULL);
    
    return hdrs->priv->post_to.entry;
}

GtkWidget *
e_msg_composer_hdrs_get_subject_entry (EMsgComposerHdrs *hdrs)
{
    g_return_val_if_fail (E_IS_MSG_COMPOSER_HDRS (hdrs), NULL);
    
    return hdrs->priv->subject.entry;
}

GtkWidget *
e_msg_composer_hdrs_get_from_hbox (EMsgComposerHdrs *hdrs)
{
    g_return_val_if_fail (E_IS_MSG_COMPOSER_HDRS (hdrs), NULL);
    
    return hdrs->priv->from.entry;
}

GtkWidget *
e_msg_composer_hdrs_get_from_omenu (EMsgComposerHdrs *hdrs)
{
    g_return_val_if_fail (E_IS_MSG_COMPOSER_HDRS (hdrs), NULL);
    
    return GTK_WIDGET (g_object_get_data ((GObject *) hdrs->priv->from.entry, "from_menu"));
}