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

/* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 8; tab-width: 8 -*- */
/* e-msg-composer.c
 *
 * Copyright (C) 1999  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: Ettore Perazzoli
 */

/*

   TODO

   - Somehow users should be able to see if any file(s) are attached even when
     the attachment bar is not shown.

*/

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

#include <gnome.h>
#include <glade/glade.h>
#include <camel/camel.h>

#include "e-msg-composer.h"
#include "e-msg-composer-attachment-bar.h"
#include "e-msg-composer-hdrs.h"


#define DEFAULT_WIDTH 600
#define DEFAULT_HEIGHT 500


enum {
    SEND,
    POSTPONE,
    LAST_SIGNAL
};

static guint signals[LAST_SIGNAL] = { 0 };

static GnomeAppClass *parent_class = NULL;


/* This functions builds a CamelMimeMessage for the message that the user has
   composed in `composer'.  */
static CamelMimeMessage *
build_message (EMsgComposer *composer)
{
    CamelMimeMessage *new;
    CamelMimeBodyPart *body_part;
    CamelMultipart *multipart;
    gchar *text;

    new = camel_mime_message_new_with_session (NULL);

    e_msg_composer_hdrs_to_message (E_MSG_COMPOSER_HDRS (composer->hdrs),
                    new);

    multipart = camel_multipart_new ();
    body_part = camel_mime_body_part_new ();

    text = gtk_editable_get_chars (GTK_EDITABLE (composer->text), 0, -1);
    camel_mime_part_set_text (CAMEL_MIME_PART (body_part), text);
    camel_multipart_add_part (multipart, body_part);

    e_msg_composer_attachment_bar_to_multipart
        (E_MSG_COMPOSER_ATTACHMENT_BAR (composer->attachment_bar),
         multipart);

    camel_medium_set_content_object (CAMEL_MEDIUM (new),
                     CAMEL_DATA_WRAPPER (multipart));

    /* FIXME refcounting is most certainly wrong.  We want all the stuff to
           be destroyed when we unref() the message.  */

    return new;
}


static void
show_attachments (EMsgComposer *composer,
          gboolean show)
{
    if (show) {
        gtk_widget_show (composer->attachment_scrolled_window);
        gtk_widget_show (composer->attachment_bar);
    } else {
        gtk_widget_hide (composer->attachment_scrolled_window);
        gtk_widget_hide (composer->attachment_bar);
    }

    composer->attachment_bar_visible = show;

    /* Update the GUI.  */

    gtk_check_menu_item_set_active
        (GTK_CHECK_MENU_ITEM
         (glade_xml_get_widget (composer->menubar_gui,
                    "menu_view_attachments")),
         show);

    /* XXX we should update the toggle toolbar item as well.  At
       this point, it is not a toggle because Glade is broken.  */
}


/* Callbacks.  */

static void
send_cb (GtkWidget *widget,
     gpointer data)
{
    gtk_signal_emit (GTK_OBJECT (data), signals[SEND]);
}

static void
menu_view_attachments_activate_cb (GtkWidget *widget,
                      gpointer data)
{
    e_msg_composer_show_attachments (E_MSG_COMPOSER (data),
                     GTK_CHECK_MENU_ITEM (widget)->active);
}

static void
toolbar_view_attachments_clicked_cb (GtkWidget *widget,
                      gpointer data)
{
    EMsgComposer *composer;

    composer = E_MSG_COMPOSER (data);

    e_msg_composer_show_attachments (composer,
                     ! composer->attachment_bar_visible);
}

static void
add_attachment_cb (GtkWidget *widget,
           gpointer data)
{
    EMsgComposer *composer;

    composer = E_MSG_COMPOSER (data);

    e_msg_composer_attachment_bar_attach
        (E_MSG_COMPOSER_ATTACHMENT_BAR (composer->attachment_bar),
         NULL);
}

static void
glade_connect (GladeXML *gui,
           const gchar *widget_name,
           const gchar *signal_name,
           GtkSignalFunc callback,
           gpointer callback_data)
{
    GtkWidget *widget;

    widget = glade_xml_get_widget (gui, widget_name);
    if (widget == NULL)
        g_warning ("Widget `%s' was not found.", widget_name);
    else
        gtk_signal_connect (GTK_OBJECT (widget), signal_name,
                    GTK_SIGNAL_FUNC (callback), callback_data);
}

static void
attachment_bar_changed (EMsgComposerAttachmentBar *bar,
            gpointer data)
{
    EMsgComposer *composer;
    
    composer = E_MSG_COMPOSER (data);

    if (e_msg_composer_attachment_bar_get_num_attachments (bar) > 0)
        e_msg_composer_show_attachments (composer, TRUE);
    else
        e_msg_composer_show_attachments (composer, FALSE);
}

static void
setup_signals (EMsgComposer *composer)
{
    glade_connect (composer->menubar_gui, "menu_send",
               "activate", GTK_SIGNAL_FUNC (send_cb), composer);
    glade_connect (composer->toolbar_gui, "toolbar_send",
               "clicked", GTK_SIGNAL_FUNC (send_cb), composer);

    glade_connect (composer->menubar_gui, "menu_view_attachments",
               "activate",
               GTK_SIGNAL_FUNC (menu_view_attachments_activate_cb),
               composer);
    glade_connect (composer->toolbar_gui, "toolbar_view_attachments",
               "clicked",
               GTK_SIGNAL_FUNC (toolbar_view_attachments_clicked_cb),
               composer);

    glade_connect (composer->menubar_gui, "menu_add_attachment",
               "activate",
               GTK_SIGNAL_FUNC (add_attachment_cb), composer);
    glade_connect (composer->toolbar_gui, "toolbar_add_attachment",
               "clicked",
               GTK_SIGNAL_FUNC (add_attachment_cb), composer);

    gtk_signal_connect (GTK_OBJECT (composer->attachment_bar),
                "changed",
                GTK_SIGNAL_FUNC (attachment_bar_changed),
                composer);
}


/* GtkObject methods.  */

static void
destroy (GtkObject *object)
{
    EMsgComposer *composer;

    composer = E_MSG_COMPOSER (object);

    gtk_object_unref (GTK_OBJECT (composer->menubar_gui));
    gtk_object_unref (GTK_OBJECT (composer->toolbar_gui));
    gtk_object_unref (GTK_OBJECT (composer->appbar_gui));

    if (GTK_OBJECT_CLASS (parent_class)->destroy != NULL)
        (* GTK_OBJECT_CLASS (parent_class)->destroy) (object);
}

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

    object_class = (GtkObjectClass *) klass;

    object_class->destroy = destroy;

    parent_class = gtk_type_class (gnome_app_get_type ());

    signals[SEND] =
        gtk_signal_new ("send",
                GTK_RUN_LAST,
                object_class->type,
                GTK_SIGNAL_OFFSET (EMsgComposerClass, send),
                gtk_marshal_NONE__NONE,
                GTK_TYPE_NONE, 0);

    signals[POSTPONE] =
        gtk_signal_new ("postpone",
                GTK_RUN_LAST,
                object_class->type,
                GTK_SIGNAL_OFFSET (EMsgComposerClass, postpone),
                gtk_marshal_NONE__NONE,
                GTK_TYPE_NONE, 0);

    gtk_object_class_add_signals (object_class, signals, LAST_SIGNAL);
}

static void
init (EMsgComposer *composer)
{
    composer->menubar_gui = NULL;
    composer->toolbar_gui = NULL;
    composer->appbar_gui = NULL;

    composer->hdrs = NULL;

    composer->text = NULL;
    composer->text_scrolled_window = NULL;

    composer->attachment_bar = NULL;
    composer->attachment_scrolled_window = NULL;
}


GtkType
e_msg_composer_get_type (void)
{
    static GtkType type = 0;

    if (type == 0) {
        static const GtkTypeInfo info = {
            "EMsgComposer",
            sizeof (EMsgComposer),
            sizeof (EMsgComposerClass),
            (GtkClassInitFunc) class_init,
            (GtkObjectInitFunc) init,
            /* reserved_1 */ NULL,
            /* reserved_2 */ NULL,
            (GtkClassInitFunc) NULL,
        };

        type = gtk_type_unique (gnome_app_get_type (), &info);
    }

    return type;
}


void
e_msg_composer_construct (EMsgComposer *composer)
{
    GtkWidget *vbox;

    gtk_window_set_default_size (GTK_WINDOW (composer),
                     DEFAULT_WIDTH, DEFAULT_HEIGHT);

    gnome_app_construct (GNOME_APP (composer), "e-msg-composer",
                 "Compose a message");

    composer->menubar_gui = glade_xml_new (E_GUIDIR "/e-msg-composer.glade",
                           "menubar");
    gnome_app_set_menus (GNOME_APP (composer),
                 GTK_MENU_BAR (glade_xml_get_widget (composer->menubar_gui,
                                 "menubar")));

    composer->toolbar_gui = glade_xml_new (E_GUIDIR "/e-msg-composer.glade",
                           "toolbar");
    gnome_app_set_toolbar (GNOME_APP (composer),
                   GTK_TOOLBAR (glade_xml_get_widget (composer->toolbar_gui,
                                  "toolbar")));

    composer->appbar_gui = glade_xml_new (E_GUIDIR "/e-msg-composer.glade",
                          "appbar");
    gnome_app_set_statusbar (GNOME_APP (composer),
                 glade_xml_get_widget (composer->appbar_gui,
                               "appbar"));

    vbox = gtk_vbox_new (FALSE, GNOME_PAD);

    composer->hdrs = e_msg_composer_hdrs_new ();
    gtk_box_pack_start (GTK_BOX (vbox), composer->hdrs, FALSE, TRUE, 0);
    gtk_widget_show (composer->hdrs);

    /* GtkText for message body editing, wrapped into a
       GtkScrolledWindow.  */

    composer->text_scrolled_window = gtk_scrolled_window_new (NULL, NULL);
    gtk_scrolled_window_set_policy
        (GTK_SCROLLED_WINDOW (composer->text_scrolled_window),
         GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC);
    composer->text = gtk_text_new (NULL, NULL);
    gtk_text_set_word_wrap (GTK_TEXT (composer->text), FALSE);
    gtk_text_set_editable (GTK_TEXT (composer->text), TRUE);
    gtk_container_add (GTK_CONTAINER (composer->text_scrolled_window),
               composer->text);
    gtk_widget_show (composer->text);
    gtk_box_pack_start (GTK_BOX (vbox), composer->text_scrolled_window,
                TRUE, TRUE, 0);
    gtk_widget_show (composer->text_scrolled_window);

    /* Attachment editor, wrapped into a GtkScrolledWindow.  We don't
           show it for now.  */

    composer->attachment_scrolled_window = gtk_scrolled_window_new (NULL,
                                    NULL);
    gtk_scrolled_window_set_policy
        (GTK_SCROLLED_WINDOW (composer->attachment_scrolled_window),
         GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC);
    composer->attachment_bar = e_msg_composer_attachment_bar_new (NULL);
    GTK_WIDGET_SET_FLAGS (composer->attachment_bar, GTK_CAN_FOCUS);
    gtk_container_add (GTK_CONTAINER (composer->attachment_scrolled_window),
               composer->attachment_bar);
    gtk_box_pack_start (GTK_BOX (vbox),
                composer->attachment_scrolled_window,
                FALSE, TRUE, 0);

    gnome_app_set_contents (GNOME_APP (composer), vbox);
    gtk_widget_show (vbox);

    e_msg_composer_show_attachments (composer, FALSE);

    setup_signals (composer);
}

GtkWidget *
e_msg_composer_new (void)
{
    GtkWidget *new;
 
    new = gtk_type_new (e_msg_composer_get_type ());
    e_msg_composer_construct (E_MSG_COMPOSER (new));

    return new;
}


/**
 * e_msg_composer_show_attachments:
 * @composer: A message composer widget
 * @show: A boolean specifying whether the attachment bar should be shown or
 * not
 * 
 * If @show is %FALSE, hide the attachment bar.  Otherwise, show it.
 **/
void
e_msg_composer_show_attachments (EMsgComposer *composer,
                 gboolean show)
{
    g_return_if_fail (composer != NULL);
    g_return_if_fail (E_IS_MSG_COMPOSER (composer));

    show_attachments (composer, show);
}


/**
 * e_msg_composer_get_message:
 * @composer: A message composer widget
 * 
 * Retrieve the message edited by the user as a CamelMimeMessage.  The
 * CamelMimeMessage object is created on the fly; subsequent calls to this
 * function will always create new objects from scratch.
 * 
 * Return value: A pointer to the new CamelMimeMessage object
 **/
CamelMimeMessage *
e_msg_composer_get_message (EMsgComposer *composer)
{
    g_return_val_if_fail (composer != NULL, NULL);
    g_return_val_if_fail (E_IS_MSG_COMPOSER (composer), NULL);

    return build_message (composer);
}