path: root/modules/mail/e-mail-shell-view-private.c

/*
 * e-mail-shell-view-private.c
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) version 3.
 *
 * 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with the program; if not, see <http://www.gnu.org/licenses/>
 *
 *
 * Copyright (C) 1999-2008 Novell, Inc. (www.novell.com)
 *
 */

#include "e-mail-shell-view-private.h"

#include "widgets/menus/gal-view-factory-etable.h"

static void
mail_shell_view_folder_tree_selected_cb (EMailShellView *mail_shell_view,
                                         const gchar *full_name,
                                         const gchar *uri,
                                         guint32 flags,
                                         EMFolderTree *folder_tree)
{
    EShellView *shell_view;
    EMailReader *reader;
    gboolean folder_selected;

    shell_view = E_SHELL_VIEW (mail_shell_view);
    reader = E_MAIL_READER (mail_shell_view->priv->mail_shell_content);

    folder_selected =
        !(flags & CAMEL_FOLDER_NOSELECT) &&
        full_name != NULL;

    if (folder_selected)
        e_mail_reader_set_folder_uri (reader, uri);
    else
        e_mail_reader_set_folder (reader, NULL, NULL);

    e_shell_view_update_actions (shell_view);
}

static gboolean
mail_shell_view_folder_tree_key_press_event_cb (EMailShellView *mail_shell_view,
                                                GdkEventKey *event)
{
    EMailReader *reader;
    gboolean handled = FALSE;

    if ((event->state & GDK_CONTROL_MASK) != 0)
        goto ctrl;

    /* <keyval> alone */
    switch (event->keyval) {
        case GDK_period:
        case GDK_comma:
        case GDK_bracketleft:
        case GDK_bracketright:
            goto emit;

        default:
            goto exit;
    }

ctrl:
    /* Ctrl + <keyval> */
    switch (event->keyval) {
        case GDK_period:
        case GDK_comma:
            goto emit;

        default:
            goto exit;
    }

    /* All branches jump past this. */
    g_return_val_if_reached (FALSE);

emit:
    /* Forward the key press to the EMailReader interface. */
    reader = E_MAIL_READER (mail_shell_view->priv->mail_shell_content);
    g_signal_emit_by_name (reader, "key-press-event", event, &handled);

exit:
    return handled;
}

static void
mail_shell_view_folder_tree_selection_done_cb (EMailShellView *mail_shell_view,
                                               GtkWidget *menu)
{
    EMailShellSidebar *mail_shell_sidebar;
    EMFolderTree *folder_tree;
    GtkWidget *message_list;
    EMailReader *reader;
    const gchar *list_uri;
    gchar *tree_uri;

    reader = E_MAIL_READER (mail_shell_view->priv->mail_shell_content);
    message_list = e_mail_reader_get_message_list (reader);

    mail_shell_sidebar = mail_shell_view->priv->mail_shell_sidebar;
    folder_tree = e_mail_shell_sidebar_get_folder_tree (mail_shell_sidebar);

    /* Don't use e_mail_reader_get_folder_uri() here.  The fact that
     * the method gets the folder URI from the message list is supposed
     * to be a hidden implementation detail, and we want to explicitly
     * get the folder URI from the message list here. */
    list_uri = MESSAGE_LIST (message_list)->folder_uri;
    tree_uri = em_folder_tree_get_selected_uri (folder_tree);

    /* If the folder tree and message list disagree on the current
     * folder, reset the folder tree to match the message list. */
    if (g_strcmp0 (tree_uri, list_uri) != 0)
        em_folder_tree_set_selected (folder_tree, list_uri, FALSE);

    g_free (tree_uri);

    /* Disconnect from the "selection-done" signal. */
    g_signal_handlers_disconnect_by_func (
        menu, mail_shell_view_folder_tree_selection_done_cb,
        mail_shell_view);
}

static void
mail_shell_view_folder_tree_popup_event_cb (EShellView *shell_view,
                                            GdkEventButton *event)
{
    GtkWidget *menu;
    const gchar *widget_path;

    widget_path = "/mail-folder-popup";
    menu = e_shell_view_show_popup_menu (shell_view, widget_path, event);

    g_signal_connect_swapped (
        menu, "selection-done",
        G_CALLBACK (mail_shell_view_folder_tree_selection_done_cb),
        shell_view);
}

static gboolean
mail_shell_view_key_press_event_cb (EMailShellView *mail_shell_view,
                                    GdkEventKey *event)
{
    EShellView *shell_view;
    EShellWindow *shell_window;
    GtkAction *action;

    shell_view = E_SHELL_VIEW (mail_shell_view);
    shell_window = e_shell_view_get_shell_window (shell_view);

    if ((event->state & GDK_CONTROL_MASK) != 0)
        return FALSE;

    switch (event->keyval) {
        case GDK_space:
            action = ACTION (MAIL_SMART_FORWARD);
            break;

        case GDK_BackSpace:
            action = ACTION (MAIL_SMART_BACKWARD);
            break;

        default:
            return FALSE;
    }

    gtk_action_activate (action);

    return TRUE;
}

static gint
mail_shell_view_message_list_key_press_cb (EMailShellView *mail_shell_view,
                                           gint row,
                                           ETreePath path,
                                           gint col,
                                           GdkEvent *event)
{
    return mail_shell_view_key_press_event_cb (
        mail_shell_view, &event->key);
}

static gboolean
mail_shell_view_message_list_popup_menu_cb (EShellView *shell_view)
{
    const gchar *widget_path;

    widget_path = "/mail-message-popup";
    e_shell_view_show_popup_menu (shell_view, widget_path, NULL);

    return TRUE;
}

static gboolean
mail_shell_view_message_list_right_click_cb (EShellView *shell_view,
                                             gint row,
                                             ETreePath path,
                                             gint col,
                                             GdkEventButton *event)
{
    const gchar *widget_path;

    widget_path = "/mail-message-popup";
    e_shell_view_show_popup_menu (shell_view, widget_path, event);

    return TRUE;
}

static gboolean
mail_shell_view_popup_event_cb (EMailShellView *mail_shell_view,
                                GdkEventButton *event,
                                const gchar *uri)
{
    EShellView *shell_view;
    EMailReader *reader;
    GtkMenu *menu;

    if (uri != NULL)
        return FALSE;

    shell_view = E_SHELL_VIEW (mail_shell_view);
    reader = E_MAIL_READER (mail_shell_view->priv->mail_shell_content);
    menu = e_mail_reader_get_popup_menu (reader);

    e_shell_view_update_actions (shell_view);

    if (event == NULL)
        gtk_menu_popup (
            menu, NULL, NULL, NULL, NULL,
            0, gtk_get_current_event_time ());
    else
        gtk_menu_popup (
            menu, NULL, NULL, NULL, NULL,
            event->button, event->time);

    return TRUE;
}

static void
mail_shell_view_reader_changed_cb (EMailShellView *mail_shell_view,
                                   EMailReader *reader)
{
    e_shell_view_update_actions (E_SHELL_VIEW (mail_shell_view));
    e_mail_shell_view_update_sidebar (mail_shell_view);
}

static void
mail_shell_view_reader_status_message_cb (EMailShellView *mail_shell_view,
                                          const gchar *status_message)
{
    EShellView *shell_view;
    EShellTaskbar *shell_taskbar;

    shell_view = E_SHELL_VIEW (mail_shell_view);
    shell_taskbar = e_shell_view_get_shell_taskbar (shell_view);

    e_shell_taskbar_set_message (shell_taskbar, status_message);
}

static void
mail_shell_view_scroll_cb (EMailShellView *mail_shell_view,
                           GtkOrientation orientation,
                           GtkScrollType scroll_type,
                           gfloat position,
                           GtkHTML *html)
{
    EShell *shell;
    EShellView *shell_view;
    EShellWindow *shell_window;
    EShellSettings *shell_settings;
    EMailReader *reader;
    GtkWidget *message_list;
    gboolean magic_spacebar;

    if (html->binding_handled)
        return;

    if (orientation != GTK_ORIENTATION_VERTICAL)
        return;

    shell_view = E_SHELL_VIEW (mail_shell_view);
    shell_window = e_shell_view_get_shell_window (shell_view);
    shell = e_shell_window_get_shell (shell_window);
    shell_settings = e_shell_get_shell_settings (shell);

    magic_spacebar = e_shell_settings_get_boolean (
        shell_settings, "mail-magic-spacebar");

    if (!magic_spacebar)
        return;

    reader = E_MAIL_READER (mail_shell_view->priv->mail_shell_content);
    message_list = e_mail_reader_get_message_list (reader);

    if (scroll_type == GTK_SCROLL_PAGE_FORWARD) {
        gtk_widget_grab_focus (message_list);
        message_list_select (
            MESSAGE_LIST (message_list),
            MESSAGE_LIST_SELECT_NEXT,
            0, CAMEL_MESSAGE_SEEN);
    } else {
        gtk_widget_grab_focus (message_list);
        message_list_select (
            MESSAGE_LIST (message_list),
            MESSAGE_LIST_SELECT_PREVIOUS,
            0, CAMEL_MESSAGE_SEEN);
    }
}

static void
mail_shell_view_prepare_for_quit_done_cb (CamelFolder *folder,
                                          gpointer user_data)
{
    g_object_unref (E_ACTIVITY (user_data));
}

static void
mail_shell_view_prepare_for_quit_cb (EMailShellView *mail_shell_view,
                                     EActivity *activity)
{
    CamelFolder *folder;
    EMailReader *reader;

    /* If we got here, it means the application is shutting down
     * and this is the last EMailShellView instance.  Synchronize
     * the currently selected folder before we terminate. */

    reader = E_MAIL_READER (mail_shell_view->priv->mail_shell_content);
    folder = e_mail_reader_get_folder (reader);

    if (folder == NULL)
        return;

    mail_sync_folder (
        folder,
        mail_shell_view_prepare_for_quit_done_cb,
        g_object_ref (activity));
}

static void
mail_shell_view_load_view_collection (EShellViewClass *shell_view_class)
{
    GalViewCollection *collection;
    GalViewFactory *factory;
    ETableSpecification *spec;
    const gchar *base_dir;
    gchar *filename;

    collection = shell_view_class->view_collection;

    base_dir = EVOLUTION_ETSPECDIR;
    spec = e_table_specification_new ();
    filename = g_build_filename (base_dir, ETSPEC_FILENAME, NULL);
    if (!e_table_specification_load_from_file (spec, filename))
        g_critical ("Unable to load ETable specification file "
                "for mail");
    g_free (filename);

    factory = gal_view_factory_etable_new (spec);
    gal_view_collection_add_factory (collection, factory);
    g_object_unref (factory);
    g_object_unref (spec);

    gal_view_collection_load (collection);
}

static void
mail_shell_view_notify_view_id_cb (EMailShellView *mail_shell_view)
{
    EMailShellContent *mail_shell_content;
    GalViewInstance *view_instance;
    const gchar *view_id;

    mail_shell_content = mail_shell_view->priv->mail_shell_content;
    view_instance = e_mail_shell_content_get_view_instance (mail_shell_content);
    view_id = e_shell_view_get_view_id (E_SHELL_VIEW (mail_shell_view));

    /* A NULL view ID implies we're in a custom view.  But you can
     * only get to a custom view via the "Define Views" dialog, which
     * would have already modified the view instance appropriately.
     * Furthermore, there's no way to refer to a custom view by ID
     * anyway, since custom views have no IDs. */
    if (view_id == NULL)
        return;

    gal_view_instance_set_current_view_id (view_instance, view_id);
}

void
e_mail_shell_view_private_init (EMailShellView *mail_shell_view,
                                EShellViewClass *shell_view_class)
{
    if (!gal_view_collection_loaded (shell_view_class->view_collection))
        mail_shell_view_load_view_collection (shell_view_class);

    g_signal_connect (
        mail_shell_view, "notify::view-id",
        G_CALLBACK (mail_shell_view_notify_view_id_cb), NULL);
}

void
e_mail_shell_view_private_constructed (EMailShellView *mail_shell_view)
{
    EMailShellViewPrivate *priv = mail_shell_view->priv;
    EMailShellSidebar *mail_shell_sidebar;
    EShell *shell;
    EShellView *shell_view;
    EShellBackend *shell_backend;
    EShellContent *shell_content;
    EShellSettings *shell_settings;
    EShellSidebar *shell_sidebar;
    EShellWindow *shell_window;
    EMFormatHTMLDisplay *html_display;
    EMFolderTree *folder_tree;
    ERuleContext *context;
    EFilterRule *rule = NULL;
    GtkTreeSelection *selection;
    GtkTreeModel *tree_model;
    GtkUIManager *ui_manager;
    GtkWidget *message_list;
    EMailReader *reader;
    EWebView *web_view;
    const gchar *source;
    guint merge_id;
    gint ii = 0;

    shell_view = E_SHELL_VIEW (mail_shell_view);
    shell_backend = e_shell_view_get_shell_backend (shell_view);
    shell_content = e_shell_view_get_shell_content (shell_view);
    shell_sidebar = e_shell_view_get_shell_sidebar (shell_view);
    shell_window = e_shell_view_get_shell_window (shell_view);
    ui_manager = e_shell_window_get_ui_manager (shell_window);

    shell = e_shell_window_get_shell (shell_window);
    shell_settings = e_shell_get_shell_settings (shell);

    tree_model = e_shell_settings_get_object (
        shell_settings, "mail-label-list-store");

    e_shell_window_add_action_group (shell_window, "mail");
    e_shell_window_add_action_group (shell_window, "mail-filter");
    e_shell_window_add_action_group (shell_window, "mail-label");

    merge_id = gtk_ui_manager_new_merge_id (ui_manager);
    priv->label_merge_id = merge_id;

    /* Cache these to avoid lots of awkward casting. */
    priv->mail_shell_backend = g_object_ref (shell_backend);
    priv->mail_shell_content = g_object_ref (shell_content);
    priv->mail_shell_sidebar = g_object_ref (shell_sidebar);

    reader = E_MAIL_READER (shell_content);
    html_display = e_mail_reader_get_html_display (reader);
    message_list = e_mail_reader_get_message_list (reader);

    mail_shell_sidebar = E_MAIL_SHELL_SIDEBAR (shell_sidebar);
    folder_tree = e_mail_shell_sidebar_get_folder_tree (mail_shell_sidebar);
    selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (folder_tree));

    web_view = E_WEB_VIEW (EM_FORMAT_HTML (html_display)->html);

    g_signal_connect_swapped (
        folder_tree, "folder-selected",
        G_CALLBACK (mail_shell_view_folder_tree_selected_cb),
        mail_shell_view);

    g_signal_connect_swapped (
        folder_tree, "key-press-event",
        G_CALLBACK (mail_shell_view_folder_tree_key_press_event_cb),
        mail_shell_view);

    g_signal_connect_swapped (
        folder_tree, "popup-event",
        G_CALLBACK (mail_shell_view_folder_tree_popup_event_cb),
        mail_shell_view);

    g_signal_connect_swapped (
        MESSAGE_LIST (message_list)->tree, "key-press",
        G_CALLBACK (mail_shell_view_message_list_key_press_cb),
        mail_shell_view);

    g_signal_connect_swapped (
        MESSAGE_LIST (message_list)->tree, "popup-menu",
        G_CALLBACK (mail_shell_view_message_list_popup_menu_cb),
        mail_shell_view);

    g_signal_connect_swapped (
        MESSAGE_LIST (message_list)->tree, "right-click",
        G_CALLBACK (mail_shell_view_message_list_right_click_cb),
        mail_shell_view);

    g_signal_connect_swapped (
        reader, "changed",
        G_CALLBACK (mail_shell_view_reader_changed_cb),
        mail_shell_view);

    g_signal_connect_swapped (
        reader, "folder-loaded",
        G_CALLBACK (e_mail_shell_content_update_view_instance),
        shell_content);

    /* Use the same callback as "changed". */
    g_signal_connect_swapped (
        reader, "folder-loaded",
        G_CALLBACK (mail_shell_view_reader_changed_cb),
        mail_shell_view);

    g_signal_connect_swapped (
        reader, "folder-loaded",
        G_CALLBACK (e_mail_shell_view_restore_state),
        mail_shell_view);

    g_signal_connect_swapped (
        tree_model, "row-changed",
        G_CALLBACK (e_mail_shell_view_update_search_filter),
        mail_shell_view);

    g_signal_connect_swapped (
        tree_model, "row-deleted",
        G_CALLBACK (e_mail_shell_view_update_search_filter),
        mail_shell_view);

    g_signal_connect_swapped (
        tree_model, "row-inserted",
        G_CALLBACK (e_mail_shell_view_update_search_filter),
        mail_shell_view);

    g_signal_connect_swapped (
        web_view, "key-press-event",
        G_CALLBACK (mail_shell_view_key_press_event_cb),
        mail_shell_view);

    g_signal_connect_swapped (
        web_view, "popup-event",
        G_CALLBACK (mail_shell_view_popup_event_cb),
        mail_shell_view);

    g_signal_connect_data (
        web_view, "scroll",
        G_CALLBACK (mail_shell_view_scroll_cb),
        mail_shell_view, (GClosureNotify) NULL,
        G_CONNECT_AFTER | G_CONNECT_SWAPPED);

    g_signal_connect_swapped (
        web_view, "status-message",
        G_CALLBACK (mail_shell_view_reader_status_message_cb),
        mail_shell_view);

    /* Need to keep the handler ID so we can disconnect it in
     * dispose().  The shell outlives us and we don't want it
     * invoking callbacks on finalized shell views. */
    priv->prepare_for_quit_handler_id =
        g_signal_connect_swapped (
            shell, "prepare-for-quit",
            G_CALLBACK (mail_shell_view_prepare_for_quit_cb),
            mail_shell_view);

    e_mail_shell_view_actions_init (mail_shell_view);
    e_mail_shell_view_update_search_filter (mail_shell_view);
    e_mail_reader_init (reader);

    /* Populate built-in rules for search entry popup menu.
     * Keep the assertions, please.  If the conditions aren't
     * met we're going to crash anyway, just more mysteriously. */
    context = e_shell_content_get_search_context (shell_content);
    source = E_FILTER_SOURCE_DEMAND;
    while ((rule = e_rule_context_next_rule (context, rule, source))) {
        g_assert (ii < MAIL_NUM_SEARCH_RULES);
        priv->search_rules[ii++] = g_object_ref (rule);
    }
    g_assert (ii == MAIL_NUM_SEARCH_RULES);

    /* Now that we're all set up, simulate selecting a folder. */
    g_signal_emit_by_name (selection, "changed");
}

void
e_mail_shell_view_private_dispose (EMailShellView *mail_shell_view)
{
    EMailShellViewPrivate *priv = mail_shell_view->priv;
    gint ii;

    /* XXX It's a little awkward to have to dig up the
     *     shell this late in the game.  Should we just
     *     keep a direct reference to it?  Not sure. */
    if (priv->prepare_for_quit_handler_id > 0) {
        EShellBackend *shell_backend;
        EShell *shell;

        shell_backend = E_SHELL_BACKEND (priv->mail_shell_backend);
        shell = e_shell_backend_get_shell (shell_backend);

        g_signal_handler_disconnect (
            shell, priv->prepare_for_quit_handler_id);
        priv->prepare_for_quit_handler_id = 0;
    }

    DISPOSE (priv->mail_shell_backend);
    DISPOSE (priv->mail_shell_content);
    DISPOSE (priv->mail_shell_sidebar);

    for (ii = 0; ii < MAIL_NUM_SEARCH_RULES; ii++)
        DISPOSE (priv->search_rules[ii]);
}

void
e_mail_shell_view_private_finalize (EMailShellView *mail_shell_view)
{
    /* XXX Nothing to do? */
}

void
e_mail_shell_view_restore_state (EMailShellView *mail_shell_view)
{
    EShellView *shell_view;
    EShellContent *shell_content;
    EMailReader *reader;
    const gchar *folder_uri;
    gchar *group_name;

    /* XXX Move this to EMailShellContent. */

    g_return_if_fail (E_IS_MAIL_SHELL_VIEW (mail_shell_view));

    shell_view = E_SHELL_VIEW (mail_shell_view);
    shell_content = e_shell_view_get_shell_content (shell_view);

    reader = E_MAIL_READER (shell_content);
    folder_uri = e_mail_reader_get_folder_uri (reader);

    if (folder_uri == NULL)
        return;

    group_name = g_strdup_printf ("Folder %s", folder_uri);
    e_shell_content_restore_state (shell_content, group_name);
    g_free (group_name);
}

/* Helper for e_mail_shell_view_create_filter_from_selected() */
static void
mail_shell_view_create_filter_cb (CamelFolder *folder,
                                  const gchar *uid,
                                  CamelMimeMessage *message,
                                  gpointer user_data)
{
    struct {
        const gchar *source;
        gint type;
    } *filter_data = user_data;

    if (message != NULL)
        filter_gui_add_from_message (
            message, filter_data->source, filter_data->type);

    g_free (filter_data);
}

void
e_mail_shell_view_create_filter_from_selected (EMailShellView *mail_shell_view,
                                               gint filter_type)
{
    EMailReader *reader;
    CamelFolder *folder;
    const gchar *filter_source;
    const gchar *folder_uri;
    GPtrArray *uids;

    struct {
        const gchar *source;
        gint type;
    } *filter_data;

    g_return_if_fail (E_IS_MAIL_SHELL_VIEW (mail_shell_view));

    reader = E_MAIL_READER (mail_shell_view->priv->mail_shell_content);
    folder = e_mail_reader_get_folder (reader);
    folder_uri = e_mail_reader_get_folder_uri (reader);
    uids = e_mail_reader_get_selected_uids (reader);

    if (em_utils_folder_is_sent (folder, folder_uri))
        filter_source = E_FILTER_SOURCE_OUTGOING;
    else if (em_utils_folder_is_outbox (folder, folder_uri))
        filter_source = E_FILTER_SOURCE_OUTGOING;
    else
        filter_source = E_FILTER_SOURCE_INCOMING;

    if (uids->len == 1) {
        filter_data = g_malloc (sizeof (*filter_data));
        filter_data->source = filter_source;
        filter_data->type = filter_type;

        mail_get_message (
            folder, uids->pdata[0],
            mail_shell_view_create_filter_cb,
            filter_data, mail_msg_unordered_push);
    }

    em_utils_uids_free (uids);
}

/* Helper for e_mail_shell_view_create_vfolder_from_selected() */
static void
mail_shell_view_create_vfolder_cb (CamelFolder *folder,
                                   const gchar *uid,
                                   CamelMimeMessage *message,
                                   gpointer user_data)
{
    struct {
        gchar *uri;
        gint type;
    } *vfolder_data = user_data;

    if (message != NULL)
        vfolder_gui_add_from_message (
            message, vfolder_data->type, vfolder_data->uri);

    g_free (vfolder_data->uri);
    g_free (vfolder_data);
}

void
e_mail_shell_view_create_vfolder_from_selected (EMailShellView *mail_shell_view,
                                                gint vfolder_type)
{
    EMailReader *reader;
    CamelFolder *folder;
    const gchar *folder_uri;
    GPtrArray *uids;

    struct {
        gchar *uri;
        gint type;
    } *vfolder_data;

    g_return_if_fail (E_IS_MAIL_SHELL_VIEW (mail_shell_view));

    reader = E_MAIL_READER (mail_shell_view->priv->mail_shell_content);
    folder = e_mail_reader_get_folder (reader);
    folder_uri = e_mail_reader_get_folder_uri (reader);
    uids = e_mail_reader_get_selected_uids (reader);

    if (uids->len == 1) {
        vfolder_data = g_malloc (sizeof (*vfolder_data));
        vfolder_data->uri = g_strdup (folder_uri);
        vfolder_data->type = vfolder_type;

        mail_get_message (
            folder, uids->pdata[0],
            mail_shell_view_create_vfolder_cb,
            vfolder_data, mail_msg_unordered_push);
    }

    em_utils_uids_free (uids);
}

void
e_mail_shell_view_update_sidebar (EMailShellView *mail_shell_view)
{
    EMailShellContent *mail_shell_content;
    EShellSidebar *shell_sidebar;
    EShellView *shell_view;
    EMailReader *reader;
    CamelStore *local_store;
    CamelFolder *folder;
    GPtrArray *uids;
    GString *buffer;
    const gchar *display_name;
    const gchar *folder_uri;
    gchar *folder_name;
    gchar *title;
    guint32 num_deleted;
    guint32 num_junked;
    guint32 num_junked_not_deleted;
    guint32 num_unread;
    guint32 num_visible;

    g_return_if_fail (E_IS_MAIL_SHELL_VIEW (mail_shell_view));

    mail_shell_content = mail_shell_view->priv->mail_shell_content;

    shell_view = E_SHELL_VIEW (mail_shell_view);
    shell_sidebar = e_shell_view_get_shell_sidebar (shell_view);

    reader = E_MAIL_READER (mail_shell_content);
    folder = e_mail_reader_get_folder (reader);
    folder_uri = e_mail_reader_get_folder_uri (reader);

    local_store = e_mail_local_get_store ();

    /* If no folder is selected, reset the sidebar banners
     * to their default values and stop. */
    if (folder == NULL) {
        GtkAction *action;
        gchar *label;

        action = e_shell_view_get_action (shell_view);

        g_object_get (action, "label", &label, NULL);
        e_shell_sidebar_set_secondary_text (shell_sidebar, NULL);
        e_shell_view_set_title (shell_view, label);
        g_free (label);

        return;
    }

    camel_object_get (
        folder, NULL,
        CAMEL_FOLDER_NAME, &folder_name,
        CAMEL_FOLDER_DELETED, &num_deleted,
        CAMEL_FOLDER_JUNKED, &num_junked,
        CAMEL_FOLDER_JUNKED_NOT_DELETED, &num_junked_not_deleted,
        CAMEL_FOLDER_UNREAD, &num_unread,
        CAMEL_FOLDER_VISIBLE, &num_visible,
        NULL);

    buffer = g_string_sized_new (256);
    uids = e_mail_reader_get_selected_uids (reader);

    if (uids->len > 1)
        g_string_append_printf (
            buffer, ngettext ("%d selected, ", "%d selected, ",
            uids->len), uids->len);

    if (CAMEL_IS_VTRASH_FOLDER (folder)) {
        CamelVTrashFolder *trash_folder;

        trash_folder = (CamelVTrashFolder *) folder;

        /* "Trash" folder */
        if (trash_folder->type == CAMEL_VTRASH_FOLDER_TRASH)
            g_string_append_printf (
                buffer, ngettext ("%d deleted",
                "%d deleted", num_deleted), num_deleted);

        /* "Junk" folder (hide deleted messages) */
        else if (e_mail_reader_get_hide_deleted (reader))
            g_string_append_printf (
                buffer, ngettext ("%d junk",
                "%d junk", num_junked_not_deleted),
                num_junked_not_deleted);

        /* "Junk" folder (show deleted messages) */
        else
            g_string_append_printf (
                buffer, ngettext ("%d junk", "%d junk",
                num_junked), num_junked);

    /* "Drafts" folder */
    } else if (em_utils_folder_is_drafts (folder, folder_uri)) {
        g_string_append_printf (
            buffer, ngettext ("%d draft", "%d drafts",
            num_visible), num_visible);

    /* "Outbox" folder */
    } else if (em_utils_folder_is_outbox (folder, folder_uri)) {
        g_string_append_printf (
            buffer, ngettext ("%d unsent", "%d unsent",
            num_visible), num_visible);

    /* "Sent" folder */
    } else if (em_utils_folder_is_sent (folder, folder_uri)) {
        g_string_append_printf (
            buffer, ngettext ("%d sent", "%d sent",
            num_visible), num_visible);

    /* Normal folder */
    } else {
        if (!e_mail_reader_get_hide_deleted (reader))
            num_visible +=
                num_deleted - num_junked +
                num_junked_not_deleted;

        if (num_unread > 0 && uids->len <= 1)
            g_string_append_printf (
                buffer, ngettext ("%d unread, ",
                "%d unread, ", num_unread), num_unread);
        g_string_append_printf (
            buffer, ngettext ("%d total", "%d total",
            num_visible), num_visible);
    }

    em_utils_uids_free (uids);

    /* Choose a suitable folder name for displaying. */
    if (folder->parent_store == local_store && (
        strcmp (folder_name, "Drafts") == 0 ||
        strcmp (folder_name, "Inbox") == 0 ||
        strcmp (folder_name, "Outbox") == 0 ||
        strcmp (folder_name, "Sent") == 0 ||
        strcmp (folder_name, "Templates") == 0))
        display_name = _(folder_name);
    else if (strcmp (folder_name, "INBOX") == 0)
        display_name = _("Inbox");
    else
        display_name = folder_name;

    title = g_strdup_printf ("%s (%s)", display_name, buffer->str);
    e_shell_sidebar_set_secondary_text (shell_sidebar, buffer->str);
    e_shell_view_set_title (shell_view, title);
    g_free (title);

    camel_object_free (folder, CAMEL_FOLDER_NAME, folder_name);
    g_string_free (buffer, TRUE);
}