path: root/composer/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 <libgnorba/gnorba.h>
#include <bonobo.h>
#include <bonobo/bonobo-stream-memory.h>

#include <glade/glade.h>

#include <camel/camel.h>

#include "e-msg-composer.h"
#include "e-msg-composer-address-dialog.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;


static GtkWidget *
create_editor (EMsgComposer *composer)
{
    GtkWidget *control;

    /* FIXME: Hardcoded value sucks!  */
    control = bonobo_widget_new_control ("control:html-editor",
                         bonobo_object_corba_objref (BONOBO_OBJECT (composer->uih)));
    if (control == NULL) {
        g_warning ("Cannot get the `control:html-editor' component.");
        return NULL;
    }

    return control;
}


static void
free_string_list (GList *list)
{
    GList *p;

    if (list == NULL)
        return;

    for (p = list; p != NULL; p = p->next)
        g_free (p->data);

    g_list_free (list);
}

static char *
get_editor_text (BonoboWidget *editor)
{
    Bonobo_PersistStream persist;
    BonoboStream *stream;
    CORBA_Environment ev;
    char *text;

    CORBA_exception_init (&ev);
    persist = (Bonobo_PersistStream)
        bonobo_object_client_query_interface (
            bonobo_widget_get_server (editor),
            "IDL:Bonobo/PersistStream:1.0",
            &ev);
    g_assert (persist != CORBA_OBJECT_NIL);

    stream = bonobo_stream_mem_create (NULL, 0, FALSE, TRUE);
    Bonobo_PersistStream_save (persist, (Bonobo_Stream)bonobo_object_corba_objref (BONOBO_OBJECT (stream)), &ev);
    if (ev._major != CORBA_NO_EXCEPTION) {
        /* FIXME. Some error message. */
        return NULL;
    }
    if (ev._major != CORBA_SYSTEM_EXCEPTION)
        CORBA_Object_release (persist, &ev);

    Bonobo_Unknown_unref (persist, &ev);
    CORBA_exception_free (&ev);

    text = g_strdup (bonobo_stream_mem_get_buffer (BONOBO_STREAM_MEM (stream)));
    bonobo_object_unref (BONOBO_OBJECT(stream));
    return text;
}


/* This functions builds a CamelMimeMessage for the message that the user has
   composed in `composer'.  */
static CamelMimeMessage *
build_message (EMsgComposer *composer)
{
    CamelMimeMessage *new;
    char *text;
    int i;
    
    new = camel_mime_message_new ();

    e_msg_composer_hdrs_to_message (E_MSG_COMPOSER_HDRS (composer->hdrs),
                    new);
    for (i = 0; i < composer->extra_hdr_names->len; i++) {
        camel_medium_add_header (CAMEL_MEDIUM (new),
                     composer->extra_hdr_names->pdata[i],
                     composer->extra_hdr_values->pdata[i]);
    }

    text = get_editor_text (BONOBO_WIDGET (composer->editor));

    if (e_msg_composer_attachment_bar_get_num_attachments (E_MSG_COMPOSER_ATTACHMENT_BAR (composer->attachment_bar))) {
        CamelMultipart *multipart = camel_multipart_new ();
        CamelMimePart *part;

        part = camel_mime_part_new ();
        camel_mime_part_set_content (part, text,
                         strlen (text), "text/html");
        camel_multipart_add_part (multipart, 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));
    } else {
        CamelDataWrapper *cdw;
        CamelStream *stream;

        stream = camel_stream_mem_new_with_buffer (text,
                               strlen (text));
        cdw = camel_data_wrapper_new ();
        camel_data_wrapper_construct_from_stream (cdw, stream);
        camel_data_wrapper_set_mime_type (cdw, "text/html");

        camel_medium_set_content_object (CAMEL_MEDIUM (new),
                         CAMEL_DATA_WRAPPER (cdw));
    }
    g_free (text);

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

    return new;
}

static void
set_editor_text (BonoboWidget *editor, const char *text)
{
    Bonobo_PersistStream persist;
    BonoboStream *stream;
    CORBA_Environment ev;

    CORBA_exception_init (&ev);
    persist = (Bonobo_PersistStream)
        bonobo_object_client_query_interface (
            bonobo_widget_get_server (editor),
            "IDL:Bonobo/PersistStream:1.0",
            &ev);
    g_assert (persist != CORBA_OBJECT_NIL);

    stream = bonobo_stream_mem_create ((char *)text, strlen (text),
                       TRUE, FALSE);
    Bonobo_PersistStream_load (persist, (Bonobo_Stream)bonobo_object_corba_objref (BONOBO_OBJECT (stream)), &ev);
    if (ev._major != CORBA_NO_EXCEPTION) {
        /* FIXME. Some error message. */
        return;
    }
    if (ev._major != CORBA_SYSTEM_EXCEPTION)
        CORBA_Object_release (persist, &ev);

    Bonobo_Unknown_unref (persist, &ev);
    CORBA_exception_free (&ev);
    bonobo_object_unref (BONOBO_OBJECT(stream));
}


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.  */

#if 0
    gtk_check_menu_item_set_active
        (GTK_CHECK_MENU_ITEM
         (glade_xml_get_widget (composer->menubar_gui,
                    "menu_view_attachments")),
         show);
#endif

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


/* Address dialog callbacks.  */

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

    composer = E_MSG_COMPOSER (data);
    composer->address_dialog = NULL;
}

static void
address_dialog_apply_cb (EMsgComposerAddressDialog *dialog,
             gpointer data)
{
    EMsgComposerHdrs *hdrs;
    GList *list;

    hdrs = E_MSG_COMPOSER_HDRS (E_MSG_COMPOSER (data)->hdrs);

    list = e_msg_composer_address_dialog_get_to_list (dialog);
    e_msg_composer_hdrs_set_to (hdrs, list);

    list = e_msg_composer_address_dialog_get_cc_list (dialog);
    e_msg_composer_hdrs_set_cc (hdrs, list);

    list = e_msg_composer_address_dialog_get_bcc_list (dialog);
    e_msg_composer_hdrs_set_bcc (hdrs, list);
}


/* Message composer window callbacks.  */

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

static void
exit_dialog_cb (int reply, gpointer data)
{
    if (reply == 0)
        gtk_widget_destroy (GTK_WIDGET (data));
}

static void
exit_cb (GtkWidget *widget, gpointer data)
{
    EMsgComposer *composer = E_MSG_COMPOSER (data);
    GtkWindow *parent =
        GTK_WINDOW (gtk_widget_get_ancestor (GTK_WIDGET (data),
                             GTK_TYPE_WINDOW));

    gnome_ok_cancel_dialog_parented ("Discard this message?",
                     exit_dialog_cb, composer, parent);
}
    

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);
}

/* Create the address dialog if not created already.  */
static void
setup_address_dialog (EMsgComposer *composer)
{
    EMsgComposerAddressDialog *dialog;
    EMsgComposerHdrs *hdrs;
    GList *list;

    if (composer->address_dialog != NULL)
        return;

    composer->address_dialog = e_msg_composer_address_dialog_new ();
    dialog = E_MSG_COMPOSER_ADDRESS_DIALOG (composer->address_dialog);
    hdrs = E_MSG_COMPOSER_HDRS (composer->hdrs);

    gtk_signal_connect (GTK_OBJECT (dialog),
                "destroy", address_dialog_destroy_cb, composer);
    gtk_signal_connect (GTK_OBJECT (dialog),
                "apply", address_dialog_apply_cb, composer);

    list = e_msg_composer_hdrs_get_to (hdrs);
    e_msg_composer_address_dialog_set_to_list (dialog, list);

    list = e_msg_composer_hdrs_get_cc (hdrs);
    e_msg_composer_address_dialog_set_cc_list (dialog, list);

    list = e_msg_composer_hdrs_get_bcc (hdrs);
    e_msg_composer_address_dialog_set_bcc_list (dialog, list);
}

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

    /* FIXME maybe we should hide the dialog on Cancel/OK instead of
           destroying it.  */

    composer = E_MSG_COMPOSER (data);

    setup_address_dialog (composer);

    gtk_widget_show (composer->address_dialog);
    gdk_window_show (composer->address_dialog->window);
}

static void
attachment_bar_changed_cb (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);
}


/* Menu bar implementation.  */

static GnomeUIInfo file_tree[] = {
    GNOMEUIINFO_MENU_OPEN_ITEM (NULL, NULL),
    GNOMEUIINFO_MENU_SAVE_ITEM (NULL, NULL),
    GNOMEUIINFO_MENU_SAVE_AS_ITEM (NULL, NULL),
    GNOMEUIINFO_ITEM_NONE (N_("Save in _folder..."), N_("Save the message in a specified folder"),
                   NULL),
    GNOMEUIINFO_SEPARATOR,
    GNOMEUIINFO_ITEM_STOCK (N_("Send"), N_("Send the message"),
                send_cb, GNOME_STOCK_MENU_MAIL_SND),
    GNOMEUIINFO_SEPARATOR,
    GNOMEUIINFO_MENU_EXIT_ITEM (exit_cb, NULL),
    GNOMEUIINFO_END
};

static GnomeUIInfo view_tree[] = {
    GNOMEUIINFO_ITEM_STOCK (N_("View _attachments"), N_("View/hide attachments"),
                menu_view_attachments_activate_cb, GNOME_STOCK_MENU_ATTACH),
    GNOMEUIINFO_END
};

static GnomeUIInfo menubar_info[] = {
    GNOMEUIINFO_MENU_FILE_TREE (file_tree),
    GNOMEUIINFO_MENU_VIEW_TREE (view_tree),
    GNOMEUIINFO_END
};

static void
create_menubar (EMsgComposer *composer)
{
    BonoboUIHandler *uih;
    BonoboUIHandlerMenuItem *list;

    uih = composer->uih;

    bonobo_ui_handler_create_menubar (uih);

    list = bonobo_ui_handler_menu_parse_uiinfo_list_with_data (menubar_info, composer);
    bonobo_ui_handler_menu_add_list (uih, "/", list);
}


/* Toolbar implementation.  */

static GnomeUIInfo toolbar_info[] = {
    GNOMEUIINFO_ITEM_STOCK (N_("Send"), N_("Send this message"), send_cb, GNOME_STOCK_PIXMAP_MAIL_SND),
    GNOMEUIINFO_SEPARATOR,
    GNOMEUIINFO_ITEM_STOCK (N_("Cut"), N_("Cut selected region into the clipboard"), NULL, GNOME_STOCK_PIXMAP_CUT),
    GNOMEUIINFO_ITEM_STOCK (N_("Copy"), N_("Copy selected region into the clipboard"), NULL, GNOME_STOCK_PIXMAP_COPY),
    GNOMEUIINFO_ITEM_STOCK (N_("Paste"), N_("Paste selected region into the clipboard"), NULL, GNOME_STOCK_PIXMAP_PASTE),
    GNOMEUIINFO_ITEM_STOCK (N_("Undo"), N_("Undo last operation"), NULL, GNOME_STOCK_PIXMAP_UNDO),
    GNOMEUIINFO_SEPARATOR,
    GNOMEUIINFO_ITEM_STOCK (N_("Attach"), N_("Attach a file"), add_attachment_cb, GNOME_STOCK_PIXMAP_ATTACH),
    GNOMEUIINFO_END
};

static void
create_toolbar (EMsgComposer *composer)
{
    BonoboUIHandler *uih;
    BonoboUIHandlerToolbarItem *list;

    uih = composer->uih;

    bonobo_ui_handler_create_toolbar (uih, "Toolbar");

    list = bonobo_ui_handler_toolbar_parse_uiinfo_list_with_data (toolbar_info, composer);
    bonobo_ui_handler_toolbar_add_list (uih, "/Toolbar", list);
}


/* GtkObject methods.  */

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

    composer = E_MSG_COMPOSER (object);

    bonobo_object_unref (BONOBO_OBJECT (composer->uih));

    /* FIXME?  I assume the Bonobo widget will get destroyed
           normally?  */

    if (composer->address_dialog != NULL)
        gtk_widget_destroy (composer->address_dialog);
    if (composer->hdrs != NULL)
        gtk_widget_destroy (composer->hdrs);

    if (composer->extra_hdr_names) {
        int i;

        for (i = 0; i < composer->extra_hdr_names->len; i++) {
            g_free (composer->extra_hdr_names->pdata[i]);
            g_free (composer->extra_hdr_values->pdata[i]);
        }
        g_ptr_array_free (composer->extra_hdr_names, TRUE);
        g_ptr_array_free (composer->extra_hdr_values, TRUE);
    }

    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->uih = NULL;

    composer->hdrs = NULL;
    composer->extra_hdr_names = g_ptr_array_new ();
    composer->extra_hdr_values = g_ptr_array_new ();

    composer->editor = NULL;

    composer->address_dialog = 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;
}


/**
 * e_msg_composer_construct:
 * @composer: A message composer widget
 * 
 * Construct @composer.
 **/
void
e_msg_composer_construct (EMsgComposer *composer)
{
    GtkWidget *vbox;

    g_return_if_fail (gtk_main_level () > 0);

    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->uih = bonobo_ui_handler_new ();
    bonobo_ui_handler_set_app (composer->uih, GNOME_APP (composer));

    vbox = gtk_vbox_new (FALSE, 0);

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

    /* Editor component.  */

    create_menubar (composer);
    create_toolbar (composer);
    composer->editor = create_editor (composer);

    gtk_widget_show (composer->editor);
    gtk_box_pack_start (GTK_BOX (vbox), composer->editor, TRUE, TRUE, 0);
    gtk_widget_show (composer->editor);

    /* 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, GNOME_PAD_SMALL);

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

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

    e_msg_composer_show_attachments (composer, FALSE);
}

/**
 * e_msg_composer_new:
 *
 * Create a new message composer widget.  This function must be called
 * within the GTK+ main loop, or it will fail.
 * 
 * Return value: A pointer to the newly created widget
 **/
GtkWidget *
e_msg_composer_new (void)
{
    GtkWidget *new;

    g_return_val_if_fail (gtk_main_level () > 0, NULL);
 
    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_set_headers:
 * @composer: a composer object
 * @to: the values for the "To" header
 * @cc: the values for the "Cc" header
 * @bcc: the values for the "Bcc" header
 * @subject: the value for the "Subject" header
 *
 * Sets the headers in the composer to the given values.
 **/
void 
e_msg_composer_set_headers (EMsgComposer *composer, const GList *to,
                const GList *cc, const GList *bcc,
                const char *subject)
{
    EMsgComposerHdrs *hdrs;

    g_return_if_fail (E_IS_MSG_COMPOSER (composer));
    hdrs = E_MSG_COMPOSER_HDRS (composer->hdrs);

    e_msg_composer_hdrs_set_to (hdrs, to);
    e_msg_composer_hdrs_set_cc (hdrs, cc);
    e_msg_composer_hdrs_set_bcc (hdrs, bcc);
    e_msg_composer_hdrs_set_subject (hdrs, subject);
}


/**
 * e_msg_composer_set_body_text:
 * @composer: a composer object
 * @text: the HTML text to initialize the editor with
 *
 * Loads the given HTML text into the editor.
 **/
void
e_msg_composer_set_body_text (EMsgComposer *composer, const char *text)
{
    g_return_if_fail (E_IS_MSG_COMPOSER (composer));

    set_editor_text (BONOBO_WIDGET (composer->editor), text);
}


/**
 * e_msg_composer_add_header:
 * @composer: a composer object
 * @name: the header name
 * @value: the header value
 *
 * Adds a header with @name and @value to the message. This header
 * may not be displayed by the composer, but will be included in
 * the message it outputs.
 **/
void
e_msg_composer_add_header (EMsgComposer *composer, const char *name,
               const char *value)
{
    g_return_if_fail (E_IS_MSG_COMPOSER (composer));
    g_return_if_fail (name != NULL);
    g_return_if_fail (value != NULL);

    g_ptr_array_add (composer->extra_hdr_names, g_strdup (name));
    g_ptr_array_add (composer->extra_hdr_values, g_strdup (value));
}


/**
 * 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);
}