path: root/mail/folder-browser-ui.c

/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/*
 *  Authors: Peter Williams <peterw@ximian.com>
 *           Jeffrey Stedfast <fejj@ximian.com>
 *
 *  Copyright 2002 Ximian, Inc. (www.ximian.com)
 *
 *  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 Street #330, Boston, MA 02111-1307, USA.
 *
 */


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

#include <string.h>

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

#include <libgnome/gnome-util.h> /* gnome_util_prepend_user_home */

#include <bonobo/bonobo-exception.h>
#include <bonobo/bonobo-ui-component.h>
#include <bonobo/bonobo-ui-util.h>

#include "widgets/misc/e-charset-picker.h"
#include "widgets/menus/gal-view-menus.h" /* GalView stuff */
#include <gal/menus/gal-view-factory-etable.h>
#include <gal/menus/gal-view-etable.h>

#include "mail-callbacks.h" /* almost all the verbs */
#include "mail-session.h" /* mail_session_forget_passwords */

#include "folder-browser-ui.h"

#include "evolution-shell-component-utils.h" /* Pixmap stuff */


/*
 * Add with 'folder_browser'
 */

static BonoboUIVerb message_verbs [] = {
    BONOBO_UI_UNSAFE_VERB ("MailNext", next_msg),
    BONOBO_UI_UNSAFE_VERB ("MailNextFlagged", next_flagged_msg),
    BONOBO_UI_UNSAFE_VERB ("MailNextUnread", next_unread_msg),
    BONOBO_UI_UNSAFE_VERB ("MailNextThread", next_thread),
    BONOBO_UI_UNSAFE_VERB ("MailPrevious", previous_msg),
    BONOBO_UI_UNSAFE_VERB ("MailPreviousFlagged", previous_flagged_msg),
    BONOBO_UI_UNSAFE_VERB ("MailPreviousUnread", previous_unread_msg),
    BONOBO_UI_UNSAFE_VERB ("AddSenderToAddressbook", add_sender_to_addrbook),
    BONOBO_UI_UNSAFE_VERB ("MessageApplyFilters", apply_filters),
    BONOBO_UI_UNSAFE_VERB ("MessageCopy", copy_msg),
    BONOBO_UI_UNSAFE_VERB ("MessageDelete", delete_msg),
    BONOBO_UI_UNSAFE_VERB ("MessageForward", forward),
    BONOBO_UI_UNSAFE_VERB ("MessageForwardAttached", forward_attached),
    BONOBO_UI_UNSAFE_VERB ("MessageForwardInline", forward_inline),
    BONOBO_UI_UNSAFE_VERB ("MessageForwardQuoted", forward_quoted),
    BONOBO_UI_UNSAFE_VERB ("MessageRedirect", redirect),
    BONOBO_UI_UNSAFE_VERB ("MessageMarkAsRead", mark_as_seen),
    BONOBO_UI_UNSAFE_VERB ("MessageMarkAsUnRead", mark_as_unseen),
    BONOBO_UI_UNSAFE_VERB ("MessageMarkAsImportant", mark_as_important),
    BONOBO_UI_UNSAFE_VERB ("MessageMarkAsUnimportant", mark_as_unimportant),
    BONOBO_UI_UNSAFE_VERB ("MessageFollowUpFlag", flag_for_followup),
    BONOBO_UI_UNSAFE_VERB ("MessageMove", move_msg),
    BONOBO_UI_UNSAFE_VERB ("MessageOpen", open_message),
    BONOBO_UI_UNSAFE_VERB ("MessagePostReply", post_reply),
    BONOBO_UI_UNSAFE_VERB ("MessageReplyAll", reply_to_all),
    BONOBO_UI_UNSAFE_VERB ("MessageReplyList", reply_to_list),
    BONOBO_UI_UNSAFE_VERB ("MessageReplySender", reply_to_sender),
    BONOBO_UI_UNSAFE_VERB ("MessageResend", resend_msg),
    BONOBO_UI_UNSAFE_VERB ("MessageSaveAs", save_msg),
    BONOBO_UI_UNSAFE_VERB ("MessageSearch", search_msg),
    BONOBO_UI_UNSAFE_VERB ("MessageUndelete", undelete_msg),
    BONOBO_UI_UNSAFE_VERB ("PrintMessage", print_msg),
    BONOBO_UI_UNSAFE_VERB ("TextZoomIn", zoom_in),
    BONOBO_UI_UNSAFE_VERB ("TextZoomOut", zoom_out),
    BONOBO_UI_UNSAFE_VERB ("TextZoomReset", zoom_reset),
    BONOBO_UI_UNSAFE_VERB ("PrintPreviewMessage", print_preview_msg),
    BONOBO_UI_UNSAFE_VERB ("ToolsFilterMailingList", filter_mlist),
    BONOBO_UI_UNSAFE_VERB ("ToolsFilterRecipient", filter_recipient),
    BONOBO_UI_UNSAFE_VERB ("ToolsFilterSender", filter_sender),
    BONOBO_UI_UNSAFE_VERB ("ToolsFilterSubject", filter_subject),
    BONOBO_UI_UNSAFE_VERB ("ToolsVFolderMailingList", vfolder_mlist),
    BONOBO_UI_UNSAFE_VERB ("ToolsVFolderRecipient", vfolder_recipient),
    BONOBO_UI_UNSAFE_VERB ("ToolsVFolderSender", vfolder_sender),
    BONOBO_UI_UNSAFE_VERB ("ToolsVFolderSubject", vfolder_subject),
    BONOBO_UI_UNSAFE_VERB ("ViewLoadImages", load_images),
    /* ViewHeaders stuff is a radio */

    BONOBO_UI_VERB_END
};

static BonoboUIVerb list_verbs [] = {
    BONOBO_UI_UNSAFE_VERB ("EditCut", folder_browser_cut),
    BONOBO_UI_UNSAFE_VERB ("EditCopy", folder_browser_copy),
    BONOBO_UI_UNSAFE_VERB ("EditPaste", folder_browser_paste),
    BONOBO_UI_UNSAFE_VERB ("EditInvertSelection", invert_selection),
    BONOBO_UI_UNSAFE_VERB ("EditSelectAll", select_all),
        BONOBO_UI_UNSAFE_VERB ("EditSelectThread", select_thread),
    BONOBO_UI_UNSAFE_VERB ("ChangeFolderProperties", configure_folder),
    BONOBO_UI_UNSAFE_VERB ("FolderExpunge", expunge_folder),
    /* HideDeleted is a toggle */
    BONOBO_UI_UNSAFE_VERB ("MessageMarkAllAsRead", mark_all_as_seen),
    BONOBO_UI_UNSAFE_VERB ("ViewHideRead", hide_read),
    BONOBO_UI_UNSAFE_VERB ("ViewHideSelected", hide_selected),
    BONOBO_UI_UNSAFE_VERB ("ViewShowAll", hide_none),
    /* ViewThreaded is a toggle */

    BONOBO_UI_VERB_END
};

static BonoboUIVerb global_verbs [] = {
    BONOBO_UI_UNSAFE_VERB ("EmptyTrash", empty_trash),
    BONOBO_UI_UNSAFE_VERB ("ForgetPasswords", mail_session_forget_passwords),
    BONOBO_UI_UNSAFE_VERB ("MailCompose", compose_msg),
    BONOBO_UI_UNSAFE_VERB ("MailPost", post_message),
    BONOBO_UI_UNSAFE_VERB ("MailStop", stop_threads),
    BONOBO_UI_UNSAFE_VERB ("ToolsFilters", filter_edit),
    BONOBO_UI_UNSAFE_VERB ("ToolsSubscriptions", manage_subscriptions),
    BONOBO_UI_UNSAFE_VERB ("ToolsVFolders", vfolder_edit_vfolders),
    /* ViewPreview is a toggle */

    BONOBO_UI_VERB_END
};

static EPixmap message_pixcache [] = {
    E_PIXMAP ("/commands/PrintMessage", "print.xpm"),
    E_PIXMAP ("/commands/PrintPreviewMessage", "print-preview.xpm"),
    E_PIXMAP ("/commands/MessageDelete", "evolution-trash-mini.png"),
    E_PIXMAP ("/commands/MessageUndelete", "undelete_message-16.png"),
    E_PIXMAP ("/commands/MessageCopy", "copy_16_message.xpm"),
    E_PIXMAP ("/commands/MessageMove", "move_message.xpm"),
    E_PIXMAP ("/commands/MessageReplyAll", "reply_to_all.xpm"),
    E_PIXMAP ("/commands/MessageReplySender", "reply.xpm"),
    E_PIXMAP ("/commands/MessageForward", "forward.xpm"),
    E_PIXMAP ("/commands/MessageApplyFilters", "apply-filters-16.xpm"),
    E_PIXMAP ("/commands/MessageSearch", "search-16.png"),
    E_PIXMAP ("/commands/MessageSaveAs", "save-as-16.png"),
    E_PIXMAP ("/commands/MessageMarkAsRead", "mail-read.xpm"),
    E_PIXMAP ("/commands/MessageMarkAsUnRead", "mail-new.xpm"),
    E_PIXMAP ("/commands/MessageMarkAsImportant", "priority-high.xpm"),
    E_PIXMAP ("/commands/MessageFollowUpFlag", "flag-for-followup-16.png"),
    
    E_PIXMAP ("/Toolbar/MailMessageToolbar/MessageReplySender", "buttons/reply.png"),
    E_PIXMAP ("/Toolbar/MailMessageToolbar/MessageReplyAll", "buttons/reply-to-all.png"),
    E_PIXMAP ("/Toolbar/MailMessageToolbar/MessageForward", "buttons/forward.png"),
    E_PIXMAP ("/Toolbar/MailMessageToolbar/PrintMessage", "buttons/print.png"),
    E_PIXMAP ("/Toolbar/MailMessageToolbar/MessageMove", "buttons/move-message.png"),
    E_PIXMAP ("/Toolbar/MailMessageToolbar/MessageCopy", "buttons/copy-message.png"),
    E_PIXMAP ("/Toolbar/MailMessageToolbar/MessageDelete", "buttons/delete-message.png"),
    
    E_PIXMAP ("/Toolbar/MailNextButtons/MailNext", "buttons/next-message.png"),
    E_PIXMAP ("/Toolbar/MailNextButtons/MailPrevious", "buttons/previous-message.png"),

    E_PIXMAP_END
};

static EPixmap list_pixcache [] = {
    E_PIXMAP ("/commands/ChangeFolderProperties", "configure_16_folder.xpm"),
    E_PIXMAP ("/commands/ViewHideRead", "hide_read_messages.xpm"),
    E_PIXMAP ("/commands/ViewHideSelected", "hide_selected_messages.xpm"),
    E_PIXMAP ("/commands/ViewShowAll", "show_all_messages.xpm"),
    
    E_PIXMAP ("/commands/EditCut", "16_cut.png"),
    E_PIXMAP ("/commands/EditCopy", "16_copy.png"),
    E_PIXMAP ("/commands/EditPaste", "16_paste.png"),

    E_PIXMAP_END
};

static EPixmap global_pixcache [] = {
    E_PIXMAP ("/commands/MailCompose", "new-message.xpm"),
    
    E_PIXMAP_END
};

enum {
    IS_DRAFTS_FOLDER          = (1 << 0),
    IS_OUTBOX_FOLDER          = (1 << 1),
    IS_SENT_FOLDER            = (1 << 2),
    
    IS_OUTGOING_FOLDER        = (IS_DRAFTS_FOLDER | IS_OUTBOX_FOLDER | IS_SENT_FOLDER),
    IS_INCOMING_FOLDER        = (1 << 3),
    
    IS_ANY_FOLDER             = (IS_OUTGOING_FOLDER | IS_INCOMING_FOLDER),

    SELECTION_NONE            = (1 << 4),
    SELECTION_SINGLE          = (1 << 5),
    SELECTION_MULTIPLE        = (1 << 6),
    
    SELECTION_ANYTHING        = (SELECTION_SINGLE | SELECTION_MULTIPLE),

    IS_THREADED       = (1 << 7),
    NOT_THREADED          = (1<<8),
    ANY_THREADED          = (IS_THREADED|NOT_THREADED),

    HAS_UNDELETED             = (1 << 9),
    HAS_DELETED               = (1 << 10),
    HAS_UNREAD                = (1 << 11),
    HAS_READ                  = (1 << 12),
    HAS_UNIMPORTANT           = (1 << 13),
    HAS_IMPORTANT             = (1 << 14)
};

#define HAS_FLAGS (HAS_UNDELETED | HAS_DELETED |  \
           HAS_UNREAD | HAS_READ | \
           HAS_UNIMPORTANT | HAS_IMPORTANT)

#define IS_1MESSAGE (IS_ANY_FOLDER | SELECTION_SINGLE | ANY_THREADED | HAS_FLAGS)
#define IS_0MESSAGE (IS_ANY_FOLDER | SELECTION_ANYTHING | SELECTION_NONE | ANY_THREADED | HAS_FLAGS)
#define IS_NMESSAGE (IS_ANY_FOLDER | SELECTION_ANYTHING | ANY_THREADED | HAS_FLAGS)

struct _UINode {
    const char *name;
    guint32 enable_mask;
};

struct _UINode default_ui_nodes[] = {
    { "ViewLoadImages",  IS_1MESSAGE },
    { "ViewFullHeaders", IS_0MESSAGE },
    { "ViewNormal",      IS_0MESSAGE },
    { "ViewSource",      IS_0MESSAGE },
    
    { "AddSenderToAddressbook",   IS_INCOMING_FOLDER | SELECTION_SINGLE | ANY_THREADED | HAS_FLAGS },
    
    { "MessageResend",            IS_SENT_FOLDER | SELECTION_SINGLE | ANY_THREADED | HAS_FLAGS },
    
    /* actions that work on exactly 1 message */
    { "MessagePostReply",         IS_1MESSAGE },
    { "MessageReplyAll",          IS_1MESSAGE },
    { "MessageReplyList",         IS_1MESSAGE },
    { "MessageReplySender",       IS_1MESSAGE },
    { "MessageForwardInline",     IS_1MESSAGE },
    { "MessageForwardQuoted",     IS_1MESSAGE },
    { "MessageRedirect",          IS_1MESSAGE },
    { "MessageSearch",            IS_1MESSAGE },
    
    { "PrintMessage",             IS_1MESSAGE },
    { "PrintPreviewMessage",      IS_1MESSAGE },
    
    { "ToolsFilterMailingList",   IS_1MESSAGE },
    { "ToolsFilterRecipient",     IS_1MESSAGE },
    { "ToolsFilterSender",        IS_1MESSAGE },
    { "ToolsFilterSubject",       IS_1MESSAGE },
    
    { "ToolsVFolderMailingList",  IS_1MESSAGE },
    { "ToolsVFolderRecipient",    IS_1MESSAGE },
    { "ToolsVFolderSender",       IS_1MESSAGE },
    { "ToolsVFolderSubject",      IS_1MESSAGE },
    
    /* actions that work on >= 1 message */
    { "MessageApplyFilters",      IS_NMESSAGE },
    { "MessageCopy",              IS_NMESSAGE },
    { "MessageMove",              IS_NMESSAGE },
    { "MessageDelete",            IS_NMESSAGE },
    { "MessageUndelete",          IS_NMESSAGE & ~HAS_DELETED },
    { "MessageMarkAsRead",        IS_NMESSAGE & ~HAS_UNREAD },
    { "MessageMarkAsUnRead",      IS_NMESSAGE & ~HAS_READ },
    { "MessageMarkAsImportant",   IS_NMESSAGE & ~HAS_UNIMPORTANT },
    { "MessageMarkAsUnimportant", IS_NMESSAGE & ~HAS_IMPORTANT },
    { "MessageFollowUpFlag",      IS_NMESSAGE },
    { "MessageOpen",              IS_NMESSAGE },
    { "MessageSaveAs",            IS_NMESSAGE },
    { "MessageForward",           IS_NMESSAGE },
    { "MessageForwardAttached",   IS_NMESSAGE },
    
    { "EditCut",                  IS_NMESSAGE },
    { "EditCopy",                 IS_NMESSAGE },
    { "EditPaste",                IS_NMESSAGE },
    { "EditSelectThread",         IS_ANY_FOLDER | SELECTION_ANYTHING | IS_THREADED | HAS_FLAGS},

    { "ViewHideSelected",         IS_NMESSAGE },
    
    /* FIXME: should these be single-selection? */
    { "MailNext",                 IS_NMESSAGE },
    { "MailNextFlagged",          IS_NMESSAGE },
    { "MailNextUnread",           IS_NMESSAGE },
    { "MailNextThread",           IS_NMESSAGE },
    { "MailPrevious",             IS_NMESSAGE },
    { "MailPreviousFlagged",      IS_NMESSAGE },
    { "MailPreviousUnread",       IS_NMESSAGE },
};

static int num_default_ui_nodes = sizeof (default_ui_nodes) / sizeof (default_ui_nodes[0]);


static void
ui_add (FolderBrowser *fb, const char *name, BonoboUIVerb verb[], EPixmap pixcache[])
{
    BonoboUIComponent *uic = fb->uicomp;
    char *file;
    
    bonobo_ui_component_add_verb_list_with_data (uic, verb, fb);
    
    /*bonobo_ui_component_freeze (uic, NULL);*/
    
    file = g_strconcat (EVOLUTION_UIDIR "/evolution-mail-", name, ".xml", NULL);
    bonobo_ui_util_set_ui (uic, EVOLUTION_DATADIR, file, "evolution-mail", NULL);
    g_free (file);
    
    e_pixmaps_update (uic, pixcache);
    
    /*bonobo_ui_component_thaw (uic, NULL);*/
}

/* more complex stuff */

static void
display_view (GalViewInstance *instance, GalView *view, gpointer data)
{
    FolderBrowser *fb = data;
    
    if (GAL_IS_VIEW_ETABLE (view)) {
        gal_view_etable_attach_tree (GAL_VIEW_ETABLE (view), fb->message_list->tree);
    }
}

void
folder_browser_ui_setup_view_menus (FolderBrowser *fb)
{
    static GalViewCollection *collection = NULL;
    char *id;
    gboolean outgoing;
    
    if (fb->uicomp == NULL || fb->folder == NULL)
        return;
    
    g_assert (fb->view_instance == NULL);
    g_assert (fb->view_menus == NULL);
    
    outgoing = folder_browser_is_drafts (fb) ||
        folder_browser_is_sent (fb) ||
        folder_browser_is_outbox (fb);
    
    if (collection == NULL) {
        ETableSpecification *spec;
        char *local_dir;
        GalViewFactory *factory;
        
        collection = gal_view_collection_new ();
        
        gal_view_collection_set_title (collection, _("Mail"));
        
        local_dir = gnome_util_prepend_user_home ("/evolution/views/mail/");
        gal_view_collection_set_storage_directories
            (collection,
             EVOLUTION_GALVIEWSDIR "/evolution/views/mail/",
             local_dir);
        g_free (local_dir);
        
        spec = e_table_specification_new ();
        e_table_specification_load_from_file (spec, EVOLUTION_ETSPECDIR "/message-list.etspec");
        
        factory = gal_view_factory_etable_new (spec);
        g_object_unref (spec);
        gal_view_collection_add_factory (collection, factory);
        g_object_unref (factory);
        
        gal_view_collection_load (collection);
    }
    
    id = mail_config_folder_to_safe_url (fb->folder);
    fb->view_instance = gal_view_instance_new (collection, id);
    g_free (id);
    
    if (outgoing)
        gal_view_instance_set_default_view (fb->view_instance, "As_Sent_Folder");
    
    if (!gal_view_instance_exists (fb->view_instance)) {
        char *path;
        struct stat st;
        
        gal_view_instance_load (fb->view_instance);
        
        path = mail_config_folder_to_cachename (fb->folder, "et-header-");
        if (path && stat (path, &st) == 0 && st.st_size > 0 && S_ISREG (st.st_mode)) {
            ETableSpecification *spec;
            ETableState *state;
            GalView *view;
            
            spec = e_table_specification_new();
            e_table_specification_load_from_file (spec, EVOLUTION_ETSPECDIR "/message-list.etspec");
            view = gal_view_etable_new (spec, "");
            g_object_unref (spec);
            
            state = e_table_state_new ();
            e_table_state_load_from_file (state, path);
            gal_view_etable_set_state (GAL_VIEW_ETABLE (view), state);
            g_object_unref (state);
            
            gal_view_instance_set_custom_view (fb->view_instance, view);
            g_object_unref (view);
        }
        g_free (path);
    }
    
    fb->view_menus = gal_view_menus_new (fb->view_instance);
    gal_view_menus_apply (fb->view_menus, fb->uicomp, NULL);
    
    /* Due to CORBA reentrancy, the view could be gone now. */
    if (fb->view_instance == NULL)
        return;
    
    g_signal_connect (fb->view_instance, "display_view", G_CALLBACK (display_view), fb);
    
    display_view (fb->view_instance, gal_view_instance_get_current_view (fb->view_instance), fb);
}

/* Gets rid of the view instance and view menus objects */
void
folder_browser_ui_discard_view_menus (FolderBrowser *fb)
{
    g_assert (fb->view_instance != NULL);
    g_assert (fb->view_menus != NULL);
    
    g_object_unref (fb->view_instance);
    fb->view_instance = NULL;
    
    g_object_unref (fb->view_menus);
    fb->view_menus = NULL;
}

void
folder_browser_ui_message_list_focus (FolderBrowser *fb)
{
    g_assert (fb->uicomp != NULL);
    
    bonobo_ui_component_set_prop (fb->uicomp, "/commands/EditInvertSelection",
                      "sensitive", "1", NULL);
/*  bonobo_ui_component_set_prop (fb->uicomp, "/commands/EditSelectThread",
    "sensitive", "1", NULL);*/
}

void
folder_browser_ui_message_list_unfocus (FolderBrowser *fb)
{
    g_assert (fb->uicomp != NULL);
    
    bonobo_ui_component_set_prop (fb->uicomp, "/commands/EditInvertSelection",
                      "sensitive", "0", NULL);
    /*bonobo_ui_component_set_prop (fb->uicomp, "/commands/EditSelectThread",
      "sensitive", "0", NULL);*/
}

static const char *
basename (const char *path)
{
    const char *base;
    
    if (!(base = strrchr (path, '/')))
        base = path;
    else
        base++;
    
    return base;
}

static void
folder_browser_setup_property_menu (FolderBrowser *fb, BonoboUIComponent *uic)
{
    char *name, *base = NULL;
    CamelURL *url;
    
    url = camel_url_new (fb->uri, NULL);
    if (url)
        base = g_path_get_basename(url->fragment?url->fragment:url->path);
    
    if (base && base[0] != '\0')
        name = g_strdup_printf (_("Properties for \"%s\""), base);
    else
        name = g_strdup (_("Properties"));
    
    bonobo_ui_component_set_prop (
        uic, "/menu/File/Folder/ComponentPlaceholder/ChangeFolderProperties",
        "label", name, NULL);
    g_free (name);
    g_free(base);

    if (url)
        camel_url_free (url);
    
    fbui_sensitise_item (fb, "ChangeFolderProperties",
                 (strncmp (fb->uri, "vfolder:", 8) == 0 || strncmp (fb->uri, "file:", 5) == 0));
}

/* Must be in the same order as MailConfigDisplayStyle */
/* used in folder-browser.c as well (therefore not static) */
char *message_display_styles[] = {
    "/commands/ViewNormal",
    "/commands/ViewFullHeaders",
    "/commands/ViewSource"
};

/* public */

void 
folder_browser_ui_add_message (FolderBrowser *fb)
{
    BonoboUIComponent *uic = fb->uicomp;
    FolderBrowserSelectionState prev_state;
    GConfClient *gconf;
    int style;
    
    if (fb->sensitise_state) {
        g_hash_table_destroy(fb->sensitise_state);
        fb->sensitise_state = NULL;
    }
    
    ui_add (fb, "message", message_verbs, message_pixcache);
    
    gconf = gconf_client_get_default ();
    
    /* Display Style */
    style = gconf_client_get_int (gconf, "/apps/evolution/mail/display/message_style", NULL);
    style = style >= 0 && style < MAIL_CONFIG_DISPLAY_MAX ? style : 0;
    bonobo_ui_component_set_prop (uic, message_display_styles[style], "state", "1", NULL);
    bonobo_ui_component_add_listener (uic, "ViewNormal", folder_browser_set_message_display_style, fb);
    bonobo_ui_component_add_listener (uic, "ViewFullHeaders", folder_browser_set_message_display_style, fb);
    bonobo_ui_component_add_listener (uic, "ViewSource", folder_browser_set_message_display_style, fb);
    if (fb->mail_display->display_style != style) {
        fb->mail_display->display_style = style;
        mail_display_redisplay (fb->mail_display, TRUE);
    }
    
    /* Resend Message */
    if (fb->folder && !folder_browser_is_sent (fb)) 
        fbui_sensitise_item (fb, "MessageResend", FALSE);
    
    /* sensitivity of message-specific commands */
    prev_state = fb->selection_state;
    fb->selection_state = FB_SELSTATE_UNDEFINED;
    folder_browser_ui_set_selection_state (fb, prev_state);
    
    /* Charset picker */
    e_charset_picker_bonobo_ui_populate (uic, "/menu/View", FB_DEFAULT_CHARSET,
                         folder_browser_charset_changed, fb);
}

void 
folder_browser_ui_add_list (FolderBrowser *fb)
{
    BonoboUIComponent *uic = fb->uicomp;
    GConfClient *gconf;
    int state;
    
    gconf = gconf_client_get_default ();
    
    if (fb->sensitise_state) {
        g_hash_table_destroy (fb->sensitise_state);
        fb->sensitise_state = NULL;
    }
    
    ui_add (fb, "list", list_verbs, list_pixcache);
    
    /* Hide Deleted */
    state = !gconf_client_get_bool (gconf, "/apps/evolution/mail/display/show_deleted", NULL);
    bonobo_ui_component_set_prop (uic, "/commands/HideDeleted", "state", state ? "1" : "0", NULL);
    bonobo_ui_component_add_listener (uic, "HideDeleted", folder_browser_toggle_hide_deleted, fb);
    if (!(fb->folder && (fb->folder->folder_flags & CAMEL_FOLDER_IS_TRASH)))
        message_list_set_hidedeleted (fb->message_list, state);
    else
        fbui_sensitise_item (fb, "HideDeleted", FALSE);
    
    /* Threaded toggle */
    state = mail_config_get_thread_list (FOLDER_BROWSER (fb)->uri);
    bonobo_ui_component_set_prop (uic, "/commands/ViewThreaded", "state", state ? "1" : "0", NULL);
    bonobo_ui_component_add_listener (uic, "ViewThreaded", folder_browser_toggle_threads, fb);
    /* FIXME: this kind of bypasses bonobo but seems the only way when we change components */
    folder_browser_toggle_threads (uic, "", Bonobo_UIComponent_STATE_CHANGED,
                       state ? "1" : "0", fb);
    
    /* Property menu */
    folder_browser_setup_property_menu (fb, fb->uicomp);
    
    /* View menu */
    if (fb->view_instance == NULL)
        folder_browser_ui_setup_view_menus (fb);
}

void 
folder_browser_ui_rm_list (FolderBrowser *fb)
{
    /* View menu */
    if (fb->view_instance != NULL)
        folder_browser_ui_discard_view_menus (fb);
}

void 
folder_browser_ui_add_global (FolderBrowser *fb)
{
    BonoboUIComponent *uic = fb->uicomp;
    gboolean show_preview;
    GConfClient *gconf;
    
    if (fb->sensitise_state) {
        g_hash_table_destroy (fb->sensitise_state);
        fb->sensitise_state = NULL;
    }
    
    ui_add (fb, "global", global_verbs, global_pixcache);
    
    gconf = gconf_client_get_default ();
    
    /* (Pre)view toggle */
    show_preview = gconf_client_get_bool (gconf, "/apps/evolution/mail/display/show_preview", NULL);
    bonobo_ui_component_set_prop (uic, "/commands/ViewPreview", "state", show_preview ? "1" : "0", NULL);
    folder_browser_set_message_preview (fb, show_preview);
    
    /* listen for user-changes */
    bonobo_ui_component_add_listener (uic, "ViewPreview", folder_browser_toggle_preview, fb);
    
    /* Stop button */
    /* TODO: Go through cache, but we can't becaus eof mail-mt.c:set_stop at the moment */
    bonobo_ui_component_set_prop (uic, "/commands/MailStop", "sensitive", "0", NULL);
}

void 
folder_browser_ui_rm_all (FolderBrowser *fb)
{
    BonoboUIComponent *uic = fb->uicomp;
    
    bonobo_ui_component_rm (uic, "/", NULL);
    bonobo_ui_component_unset_container (uic, NULL);
    
    if (fb->sensitise_state) {
        g_hash_table_destroy (fb->sensitise_state);
        fb->sensitise_state = NULL;
    }
}

void
fbui_sensitise_item (FolderBrowser *fb, const char *item, int state)
{
    char *name, *key;
    int val;
    
    /* If this whole caching idea doesn't work, remove it here */
    if (fb->sensitise_state == NULL)
        fb->sensitise_state = g_hash_table_new (g_str_hash, g_str_equal);
    
    if (g_hash_table_lookup_extended (fb->sensitise_state, item, (void **)&key, (void **)&val)) {
        if (val == state)
            return;
    }
    
    if (fb->uicomp) {
        name = g_alloca (strlen (item) + strlen ("/commands/") + 1);
        sprintf (name, "/commands/%s", item);
        bonobo_ui_component_set_prop (fb->uicomp, name, "sensitive", state ? "1" : "0", NULL);
        g_hash_table_insert (fb->sensitise_state, (char *) item, (gpointer) state);
    }
}

static void
fbui_sensitize_items (FolderBrowser *fb, guint32 enable_mask)
{
    gboolean enable;
    int i;
    
    for (i = 0; i < num_default_ui_nodes; i++) {
        enable = (default_ui_nodes[i].enable_mask & enable_mask) == enable_mask;
        fbui_sensitise_item (fb, default_ui_nodes[i].name, enable);
    }
}

void 
folder_browser_ui_scan_selection (FolderBrowser *fb)
{
    gboolean outgoing = FALSE;
    guint32 enable_mask = 0;
    
    if (fb->selection_state == FB_SELSTATE_SINGLE || 
        fb->selection_state == FB_SELSTATE_MULTIPLE) {
        GPtrArray *uids;
        CamelMessageInfo *info;
        guint32 temp_mask = 0;
        int i;
        
        uids = g_ptr_array_new ();
        message_list_foreach (fb->message_list, enumerate_msg, uids);

        for (i = 0; i < uids->len; i++) {
            info = camel_folder_get_message_info (fb->folder, uids->pdata[i]);
            if (info == NULL)
                continue;
            
            if (info->flags & CAMEL_MESSAGE_DELETED)
                temp_mask |= HAS_DELETED;
            else
                temp_mask |= HAS_UNDELETED;
            
            if (info->flags & CAMEL_MESSAGE_SEEN)
                temp_mask |= HAS_READ;
            else
                temp_mask |= HAS_UNREAD;

            if (info->flags & CAMEL_MESSAGE_FLAGGED)
                temp_mask |= HAS_IMPORTANT;
            else
                temp_mask |= HAS_UNIMPORTANT;
            
            camel_folder_free_message_info (fb->folder, info);
            g_free (uids->pdata[i]);
        }
        
        g_ptr_array_free (uids, TRUE);
        
        /* yeah, the naming is a bit backwards, but we need to support
         * the case when, say, both a deleted and an undeleted message
         * are selected. Both the Delete and Undelete menu items should
         * be sensitized, but the only good way to set the flags is as
         * above. Anyway, the naming is a bit of a lie but it works out
         * so that it's sensible both above and in the definition of
         * the UI items, so deal with it.
         */
        
        enable_mask |= (~temp_mask & HAS_FLAGS);
    }
    
    if (folder_browser_is_drafts (fb)) {
        enable_mask |= IS_DRAFTS_FOLDER;
        outgoing = TRUE;
    }
    
    if (folder_browser_is_outbox (fb)) {
        enable_mask |= IS_OUTBOX_FOLDER;
        outgoing = TRUE;
    }
    
    if (folder_browser_is_sent (fb)) {
        enable_mask |= IS_SENT_FOLDER;
        outgoing = TRUE;
    }
    
    if (fb->message_list && fb->message_list->threaded)
        enable_mask |= IS_THREADED;
    else
        enable_mask |= NOT_THREADED;
    
    if (outgoing == FALSE)
        enable_mask |= IS_INCOMING_FOLDER;
    
    switch (fb->selection_state) {
    case FB_SELSTATE_SINGLE:
        enable_mask |= SELECTION_SINGLE;
        break;
    case FB_SELSTATE_MULTIPLE:
        enable_mask |= SELECTION_MULTIPLE;
        break;
    case FB_SELSTATE_NONE:
    default:
        enable_mask |= SELECTION_NONE;
        break;
    }
    
    fbui_sensitize_items (fb, enable_mask);
}

void 
folder_browser_ui_set_selection_state (FolderBrowser *fb, FolderBrowserSelectionState state)
{
    /* the state may be the same but with
     * different messages selected, necessitating
     * a recheck of the flags of the selected
     * messages.
     */
    
    if (state == fb->selection_state && 
        state != FB_SELSTATE_SINGLE &&
        state != FB_SELSTATE_MULTIPLE)
        return;
    
    fb->selection_state = state;
    folder_browser_ui_scan_selection (fb);
}

void
folder_browser_ui_message_loaded (FolderBrowser *fb)
{
    BonoboUIComponent *uic = fb->uicomp;
    
    if (uic) {
        fb->selection_state = FB_SELSTATE_NONE;
        folder_browser_ui_set_selection_state (fb, FB_SELSTATE_SINGLE);
    }
}