path: root/shell/e-shell-view.c

/* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 8; tab-width: 8 -*- */
/* e-shell-view.c
 *
 * Copyright (C) 2000, 2001 Ximian, 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.
 *
 * Authors:
 *   Ettore Perazzoli <ettore@helixcode.com>
 *   Miguel de Icaza <miguel@helixcode.com>
 *   Matt Loper <matt@helixcode.com>
 */

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

#include <glib.h>
#include <libgnome/gnome-defs.h>
#include <libgnome/gnome-config.h>
#include <libgnome/gnome-i18n.h>
#include <libgnomeui/gnome-window.h>
#include <libgnomeui/gnome-window-icon.h>
#include <bonobo/bonobo-socket.h>
#include <bonobo/bonobo-ui-util.h>
#include <bonobo/bonobo-widget.h>

#include <gal/e-paned/e-hpaned.h>
#include <gal/util/e-util.h>
#include <gal/widgets/e-gui-utils.h>
#include <gal/widgets/e-unicode.h>
#include <gal/widgets/e-scroll-frame.h>

#include "widgets/misc/e-clipped-label.h"

#include "evolution-shell-view.h"

#include "e-shell-constants.h"
#include "e-shell-folder-title-bar.h"
#include "e-shell-utils.h"
#include "e-shell.h"
#include "e-shortcuts-view.h"
#include "e-storage-set-view.h"
#include "e-title-bar.h"

#include "e-shell-view.h"
#include "e-shell-view-menu.h"


static BonoboWindowClass *parent_class = NULL;

struct _EShellViewPrivate {
    /* The shell.  */
    EShell *shell;

    /* EvolutionShellView Bonobo object for implementing the
           Evolution::ShellView interface.  */
    EvolutionShellView *corba_interface;

    /* The UI handler & container.  */
    BonoboUIComponent *ui_component;
    BonoboUIContainer *ui_container;

    /* Currently displayed URI.  */
    char *uri;

    /* delayed selection, used when a path doesn't exist in an
           EStorage.  cleared when we're signaled with
           "folder_selected" */
    char *delayed_selection;

    /* Tooltips.  */
    GtkTooltips *tooltips;

    /* The widgetry.  */
    GtkWidget *appbar;
    GtkWidget *hpaned;
    GtkWidget *view_vbox;
    GtkWidget *view_title_bar;
    GtkWidget *view_hpaned;
    GtkWidget *contents;
    GtkWidget *notebook;
    GtkWidget *shortcut_frame;
    GtkWidget *shortcut_bar;
    GtkWidget *storage_set_title_bar;
    GtkWidget *storage_set_view;
    GtkWidget *storage_set_view_box;

    /* The status bar widgetry.  */
    GtkWidget *offline_toggle;
    GtkWidget *offline_toggle_pixmap;
    GtkWidget *progress_bar;

    /* The view we have already open.  */
    GHashTable *uri_to_control;

    /* Position of the handles in the paneds, to be restored when we show elements
           after hiding them.  */
    unsigned int hpaned_position;
    unsigned int view_hpaned_position;

    /* Status of the shortcut and folder bars.  */
    EShellViewSubwindowMode shortcut_bar_mode;
    EShellViewSubwindowMode folder_bar_mode;

    /* Timeout ID for the progress bar.  */
    int progress_bar_timeout_id;

    /* Status of the progress bar.  */
    int progress_bar_value;

    /* List of sockets we created.  */
    GList *sockets;
};

enum {
    SHORTCUT_BAR_MODE_CHANGED,
    FOLDER_BAR_MODE_CHANGED,
    LAST_SIGNAL
};

static guint signals[LAST_SIGNAL] = { 0 };

#define DEFAULT_SHORTCUT_BAR_WIDTH 100
#define DEFAULT_TREE_WIDTH         130

#define DEFAULT_WIDTH 705
#define DEFAULT_HEIGHT 550

#define DEFAULT_URI "evolution:/local/Inbox"


/* The icons for the offline/online status.  */

static GdkPixmap *offline_pixmap = NULL;
static GdkBitmap *offline_mask = NULL;

static GdkPixmap *online_pixmap = NULL;
static GdkBitmap *online_mask = NULL;


static void        update_for_current_uri         (EShellView *shell_view);
static void        update_offline_toggle_status   (EShellView *shell_view);
static const char *get_storage_set_path_from_uri  (const char *uri);


/* Utility functions.  */

static GtkWidget *
create_label_for_empty_page (void)
{
    GtkWidget *label;

    label = e_clipped_label_new (_("(No folder displayed)"));
    gtk_widget_show (label);

    return label;
}

/* Initialize the icons.  */
static void
load_images (void)
{
    GdkPixbuf *pixbuf;

    pixbuf = gdk_pixbuf_new_from_file (EVOLUTION_IMAGES "/offline.png");
    if (pixbuf == NULL) {
        g_warning ("Cannot load `%s'", EVOLUTION_IMAGES "/offline.png");
    } else {
        gdk_pixbuf_render_pixmap_and_mask (pixbuf, &offline_pixmap, &offline_mask, 128);
        gdk_pixbuf_unref (pixbuf);
    }

    pixbuf = gdk_pixbuf_new_from_file (EVOLUTION_IMAGES "/online.png");
    if (pixbuf == NULL) {
        g_warning ("Cannot load `%s'", EVOLUTION_IMAGES "/online.png");
    } else {
        gdk_pixbuf_render_pixmap_and_mask (pixbuf, &online_pixmap, &online_mask, 128);
        gdk_pixbuf_unref (pixbuf);
    }
}

/* FIXME this is broken.  */
static gboolean
bonobo_widget_is_dead (BonoboWidget *bonobo_widget)
{
    BonoboControlFrame *control_frame;
    CORBA_Object corba_object;
    CORBA_Environment ev;
    gboolean is_dead;

    control_frame = bonobo_widget_get_control_frame (bonobo_widget);
    corba_object = bonobo_control_frame_get_control (control_frame);

    CORBA_exception_init (&ev);
    is_dead = CORBA_Object_non_existent (corba_object, &ev);
    CORBA_exception_free (&ev);

    return is_dead;
}


/* Folder bar pop-up handling.  */

static void disconnect_popup_signals (EShellView *shell_view);

static void
popdown_transient_folder_bar (EShellView *shell_view)
{
    EShellViewPrivate *priv;

    priv = shell_view->priv;

    gdk_pointer_ungrab (GDK_CURRENT_TIME);
    gtk_grab_remove (priv->storage_set_view_box);

    e_shell_view_set_folder_bar_mode (shell_view, E_SHELL_VIEW_SUBWINDOW_HIDDEN);

    disconnect_popup_signals (shell_view);

    e_shell_folder_title_bar_set_toggle_state (E_SHELL_FOLDER_TITLE_BAR (priv->view_title_bar), FALSE);
}

static int
storage_set_view_box_button_release_event_cb (GtkWidget *widget,
                          GdkEventButton *button_event,
                          void *data)
{
    EShellView *shell_view;
    EShellViewPrivate *priv;

    shell_view = E_SHELL_VIEW (data);
    priv = shell_view->priv;

    if (button_event->window == E_PANED (priv->view_hpaned)->handle)
        return FALSE;

    popdown_transient_folder_bar (shell_view);

    return TRUE;
}

static int
storage_set_view_box_event_cb (GtkWidget *widget,
                   GdkEvent *event,
                   void *data)
{
    GtkWidget *event_widget;
    GtkWidget *tooltip;
    EShellView *shell_view;
    EShellViewPrivate *priv;

    shell_view = E_SHELL_VIEW (data);
    priv = shell_view->priv;

    event_widget = gtk_get_event_widget (event);

    if (!event_widget)
        return FALSE;

    tooltip = e_tree_get_tooltip (E_TREE(priv->storage_set_view));
    if (! (GTK_WIDGET_IS_SENSITIVE (event_widget) &&
           tooltip &&
           gtk_widget_is_ancestor (event_widget, tooltip)))
        return FALSE;

    switch (event->type) {
    case GDK_BUTTON_PRESS:
    case GDK_2BUTTON_PRESS:
    case GDK_3BUTTON_PRESS:
    case GDK_KEY_PRESS:
    case GDK_KEY_RELEASE:
    case GDK_MOTION_NOTIFY:
    case GDK_BUTTON_RELEASE:
    case GDK_PROXIMITY_IN:
    case GDK_PROXIMITY_OUT:
        gtk_propagate_event (event_widget, event);
        return TRUE;
        break;
    case GDK_ENTER_NOTIFY:
    case GDK_LEAVE_NOTIFY:
        gtk_widget_event (event_widget, event);
        return TRUE;
        break;
    default:
        break;
    }
    return FALSE;
}

static void
popup_storage_set_view_button_clicked (ETitleBar *title_bar,
                       void *data)
{
    EShellView *shell_view;
    EShellViewPrivate *priv;

    shell_view = E_SHELL_VIEW (data);
    priv = shell_view->priv;

    gdk_pointer_ungrab (GDK_CURRENT_TIME);
    gtk_grab_remove (priv->storage_set_view_box);

    disconnect_popup_signals (shell_view);

    e_shell_view_set_folder_bar_mode (shell_view, E_SHELL_VIEW_SUBWINDOW_STICKY);
    e_shell_folder_title_bar_set_toggle_state (E_SHELL_FOLDER_TITLE_BAR (priv->view_title_bar), FALSE);
}

static void
storage_set_view_box_map_cb (GtkWidget *widget,
                 void *data)
{
    EShellView *shell_view;
    EShellViewPrivate *priv;

    shell_view = E_SHELL_VIEW (data);
    priv = shell_view->priv;

    if (gdk_pointer_grab (widget->window, TRUE,
                  (GDK_BUTTON_PRESS_MASK
                   | GDK_BUTTON_RELEASE_MASK
                   | GDK_ENTER_NOTIFY_MASK
                   | GDK_LEAVE_NOTIFY_MASK
                   | GDK_POINTER_MOTION_MASK),
                  NULL, NULL, GDK_CURRENT_TIME) != 0) {
        g_warning ("e-shell-view.c:storage_set_view_box_map_cb() -- pointer grab failed.");
        e_shell_view_set_folder_bar_mode (shell_view, E_SHELL_VIEW_SUBWINDOW_STICKY);
        return;
    }

    gtk_grab_add (widget);
    gtk_signal_connect (GTK_OBJECT (widget), "event",
                GTK_SIGNAL_FUNC (storage_set_view_box_event_cb), shell_view);
    gtk_signal_connect (GTK_OBJECT (widget), "button_release_event",
                GTK_SIGNAL_FUNC (storage_set_view_box_button_release_event_cb), shell_view);
    gtk_signal_connect (GTK_OBJECT (priv->storage_set_view), "button_release_event",
                GTK_SIGNAL_FUNC (storage_set_view_box_button_release_event_cb), shell_view);
    gtk_signal_connect (GTK_OBJECT (priv->storage_set_title_bar), "button_clicked",
                GTK_SIGNAL_FUNC (popup_storage_set_view_button_clicked), shell_view);
}

static void
disconnect_popup_signals (EShellView *shell_view)
{
    EShellViewPrivate *priv;

    priv = shell_view->priv;

    gtk_signal_disconnect_by_func (GTK_OBJECT (priv->storage_set_view_box),
                       GTK_SIGNAL_FUNC (storage_set_view_box_button_release_event_cb),
                       shell_view);
    gtk_signal_disconnect_by_func (GTK_OBJECT (priv->storage_set_view),
                       GTK_SIGNAL_FUNC (storage_set_view_box_button_release_event_cb),
                       shell_view);
    gtk_signal_disconnect_by_func (GTK_OBJECT (priv->storage_set_title_bar),
                       GTK_SIGNAL_FUNC (popup_storage_set_view_button_clicked),
                       shell_view);
    gtk_signal_disconnect_by_func (GTK_OBJECT (priv->storage_set_view_box),
                       GTK_SIGNAL_FUNC (storage_set_view_box_map_cb),
                       shell_view);
}

static void
pop_up_folder_bar (EShellView *shell_view)
{
    EShellViewPrivate *priv;

    priv = shell_view->priv;

    priv->folder_bar_mode = E_SHELL_VIEW_SUBWINDOW_TRANSIENT;

    /* We need to show the storage set view box and do a pointer grab to catch the
           mouse clicks.  But until the box is shown, we cannot grab.  So we connect to
           the "map" signal; `storage_set_view_box_map_cb()' will do the grab.  */

    gtk_signal_connect (GTK_OBJECT (priv->storage_set_view_box), "map",
                GTK_SIGNAL_FUNC (storage_set_view_box_map_cb), shell_view);
    gtk_widget_show (priv->storage_set_view_box);

    e_paned_set_position (E_PANED (priv->view_hpaned), priv->view_hpaned_position);
}


/* Switching views on a tree view click.  */

static void new_folder_cb (EStorageSet *storage_set, const char *path, void *data);

static void
switch_on_folder_tree_click (EShellView *shell_view,
                 const char *path)
{
    EShellViewPrivate *priv;
    char *uri;

    priv = shell_view->priv;

    uri = g_strconcat (E_SHELL_URI_PREFIX, path, NULL);
    if (!strcmp (uri, priv->uri)) {
        g_free (uri);
        return;
    }

    e_shell_view_display_uri (shell_view, uri);
    g_free (uri);

    if (priv->delayed_selection) {
        g_free (priv->delayed_selection);
        priv->delayed_selection = NULL;
        gtk_signal_disconnect_by_func (GTK_OBJECT (e_shell_get_storage_set(priv->shell)),
                           GTK_SIGNAL_FUNC (new_folder_cb),
                           shell_view);
    }

    if (priv->folder_bar_mode == E_SHELL_VIEW_SUBWINDOW_TRANSIENT)
        popdown_transient_folder_bar (shell_view);
}


/* Callbacks.  */

/* Callback when a new folder is added.  removed when we clear the
   delayed_selection */
static void
new_folder_cb (EStorageSet *storage_set,
           const char *path,
           void *data)
{
    EShellView *shell_view;
    EShellViewPrivate *priv;
    char *delayed_path;

    shell_view = E_SHELL_VIEW (data);
    priv = shell_view->priv;

    delayed_path = strchr (priv->delayed_selection, ':');
    if (delayed_path) {
        delayed_path ++;
        if (!strcmp(path, delayed_path)) {
            gtk_signal_disconnect_by_func (GTK_OBJECT (e_shell_get_storage_set(priv->shell)),
                               GTK_SIGNAL_FUNC (new_folder_cb),
                               shell_view);
            g_free (priv->uri);
            priv->uri = priv->delayed_selection;
            priv->delayed_selection = NULL;
            e_shell_view_display_uri (shell_view, priv->uri);
        }
    }
}

/* Callback called when an icon on the shortcut bar gets clicked.  */
static void
activate_shortcut_cb (EShortcutsView *shortcut_view,
              EShortcuts *shortcuts,
              const char *uri,
              void *data)
{
    EShellView *shell_view;

    shell_view = E_SHELL_VIEW (data);

    e_shell_view_display_uri (shell_view, uri);
}

/* Callback when user chooses "Hide shortcut bar" via a right click */
static void
hide_requested_cb (EShortcutsView *shortcut_view,
           void *data)
{
    EShellView *shell_view;

    shell_view = E_SHELL_VIEW (data);

    e_shell_view_set_shortcut_bar_mode (shell_view,
                        E_SHELL_VIEW_SUBWINDOW_HIDDEN);
}

/* Callback called when a folder on the tree view gets clicked.  */
static void
folder_selected_cb (EStorageSetView *storage_set_view,
            const char *path,
            void *data)
{
    EShellView *shell_view;

    shell_view = E_SHELL_VIEW (data);

    switch_on_folder_tree_click (shell_view, path);
}

/* Callback called when a storage in the tree view is clicked.  */
static void
storage_selected_cb (EStorageSetView *storage_set_view,
             const char *name,
             void *data)
{
    EShellView *shell_view;
    char *path;

    shell_view = E_SHELL_VIEW (data);

    path = g_strconcat (G_DIR_SEPARATOR_S, name, NULL);
    switch_on_folder_tree_click (shell_view, path);

    g_free (path);
}

/* Callback called when the button on the tree's title bar is clicked.  */
static void
storage_set_view_button_clicked_cb (ETitleBar *title_bar,
                    void *data)
{
    EShellView *shell_view;

    shell_view = E_SHELL_VIEW (data);

    e_shell_view_set_folder_bar_mode (shell_view, E_SHELL_VIEW_SUBWINDOW_HIDDEN);
}

/* Callback called when the title bar button is clicked.  */
static void
title_bar_toggled_cb (EShellFolderTitleBar *title_bar,
              gboolean state,
              void *data)
{
    EShellView *shell_view;

    shell_view = E_SHELL_VIEW (data);

    if (! state)
        return;

    if (e_shell_view_get_folder_bar_mode (shell_view) != E_SHELL_VIEW_SUBWINDOW_TRANSIENT)
        pop_up_folder_bar (shell_view);
}

/* Callback called when the offline toggle button is clicked.  */
static void
offline_toggle_clicked_cb (GtkButton *button,
               void *data)
{
    EShellView *shell_view;
    EShellViewPrivate *priv;

    shell_view = E_SHELL_VIEW (data);
    priv = shell_view->priv;

    switch (e_shell_get_line_status (priv->shell)) {
    case E_SHELL_LINE_STATUS_ONLINE:
        e_shell_go_offline (priv->shell, shell_view);
        break;
    case E_SHELL_LINE_STATUS_OFFLINE:
        e_shell_go_online (priv->shell, shell_view);
        break;
    default:
        g_assert_not_reached ();
    }
}


/* Widget setup.  */

static void
setup_storage_set_subwindow (EShellView *shell_view)
{
    EShellViewPrivate *priv;
    GtkWidget *storage_set_view;
    GtkWidget *vbox;
    GtkWidget *scroll_frame;

    priv = shell_view->priv;

    storage_set_view = e_storage_set_view_new (e_shell_get_storage_set (priv->shell), priv->ui_container);
    gtk_signal_connect (GTK_OBJECT (storage_set_view), "folder_selected",
                GTK_SIGNAL_FUNC (folder_selected_cb), shell_view);
    gtk_signal_connect (GTK_OBJECT (storage_set_view), "storage_selected",
                GTK_SIGNAL_FUNC (storage_selected_cb), shell_view);

    scroll_frame = e_scroll_frame_new (NULL, NULL);
    e_scroll_frame_set_policy (E_SCROLL_FRAME (scroll_frame), GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC);
    e_scroll_frame_set_shadow_type (E_SCROLL_FRAME (scroll_frame), GTK_SHADOW_IN);

    gtk_container_add (GTK_CONTAINER (scroll_frame), storage_set_view);

    vbox = gtk_vbox_new (FALSE, 0);
    priv->storage_set_title_bar = e_title_bar_new (_("Folders"));

    gtk_box_pack_start (GTK_BOX (vbox), priv->storage_set_title_bar, FALSE, FALSE, 0);
    gtk_box_pack_start (GTK_BOX (vbox), scroll_frame, TRUE, TRUE, 0);

    gtk_signal_connect (GTK_OBJECT (priv->storage_set_title_bar), "button_clicked",
                GTK_SIGNAL_FUNC (storage_set_view_button_clicked_cb), shell_view);

    gtk_widget_show (vbox);
    gtk_widget_show (storage_set_view);
    gtk_widget_show (priv->storage_set_title_bar);
    gtk_widget_show (scroll_frame);

    priv->storage_set_view_box = vbox;
    priv->storage_set_view = storage_set_view;
}

static void
setup_offline_toggle (EShellView *shell_view)
{
    EShellViewPrivate *priv;
    BonoboControl *control;
    GtkWidget *toggle;
    GtkWidget *pixmap;

    priv = shell_view->priv;

    toggle = gtk_button_new ();
    GTK_WIDGET_UNSET_FLAGS (toggle, GTK_CAN_FOCUS);
    gtk_button_set_relief (GTK_BUTTON (toggle), GTK_RELIEF_NONE);

    gtk_signal_connect (GTK_OBJECT (toggle), "clicked",
                GTK_SIGNAL_FUNC (offline_toggle_clicked_cb), shell_view);

    pixmap = gtk_pixmap_new (offline_pixmap, offline_mask);

    gtk_container_add (GTK_CONTAINER (toggle), pixmap);

    gtk_widget_show (toggle);
    gtk_widget_show (pixmap);

    control = bonobo_control_new (toggle);
    g_return_if_fail (control != NULL);

    bonobo_ui_component_object_set (priv->ui_component, "/status/OfflineToggle",
                    BONOBO_OBJREF (control),
                    NULL);
    bonobo_object_unref (BONOBO_OBJECT (control));

    priv->offline_toggle        = toggle;
    priv->offline_toggle_pixmap = pixmap;

    update_offline_toggle_status (shell_view);
}

static void
setup_progress_bar (EShellView *shell_view)
{
    EShellViewPrivate *priv;
    GtkProgressBar *progress_bar;
    BonoboControl  *control;

    priv = shell_view->priv;

    progress_bar = (GTK_PROGRESS_BAR (gtk_progress_bar_new ()));

    gtk_progress_bar_set_orientation (progress_bar, GTK_PROGRESS_LEFT_TO_RIGHT);
    gtk_progress_bar_set_bar_style (progress_bar, GTK_PROGRESS_CONTINUOUS);
    
    priv->progress_bar = GTK_WIDGET (progress_bar);
    gtk_widget_show (priv->progress_bar);

    control = bonobo_control_new (priv->progress_bar);
    g_return_if_fail (control != NULL);

    bonobo_ui_component_object_set (priv->ui_component, "/status/Progress",
                    BONOBO_OBJREF (control),
                    NULL);
    bonobo_object_unref (BONOBO_OBJECT (control));
}

void
e_shell_view_set_current_shortcuts_group_num (EShellView *shell_view, int group_num)
{
    /* This function could become static */
    EShellViewPrivate *priv;
    EShortcutsView *shortcuts_view;

    priv = shell_view->priv;

    shortcuts_view = E_SHORTCUTS_VIEW (priv->shortcut_bar);

    e_group_bar_set_current_group_num (E_GROUP_BAR (E_SHORTCUT_BAR (shortcuts_view)), group_num, FALSE);
}

int
e_shell_view_get_current_shortcuts_group_num (EShellView *shell_view)
{
    EShellViewPrivate *priv;
    EShortcutsView *shortcuts_view;
    int group;

    priv = shell_view->priv;

    shortcuts_view = E_SHORTCUTS_VIEW (priv->shortcut_bar);

    group = e_group_bar_get_current_group_num (E_GROUP_BAR (E_SHORTCUT_BAR (shortcuts_view)));

    return group;
}

static void
setup_widgets (EShellView *shell_view)
{
    EShellViewPrivate *priv;

    priv = shell_view->priv;

    /* The offline/online button toggle.  */

    setup_offline_toggle (shell_view);

    /* The progress bar.  */

    setup_progress_bar (shell_view);       

    /* The shortcut bar.  */

    priv->shortcut_bar = e_shortcuts_new_view (e_shell_get_shortcuts (priv->shell));
    gtk_signal_connect (GTK_OBJECT (priv->shortcut_bar), "activate_shortcut",
                GTK_SIGNAL_FUNC (activate_shortcut_cb), shell_view);

    gtk_signal_connect (GTK_OBJECT (priv->shortcut_bar), "hide_requested",
                GTK_SIGNAL_FUNC (hide_requested_cb), shell_view);

    priv->shortcut_frame = gtk_frame_new (NULL);
    gtk_frame_set_shadow_type (GTK_FRAME (priv->shortcut_frame), GTK_SHADOW_IN);

    /* The storage set view.  */

    setup_storage_set_subwindow (shell_view);

    /* The tabless notebook which we used to contain the views.  */

    priv->notebook = gtk_notebook_new ();
    gtk_notebook_set_show_border (GTK_NOTEBOOK (priv->notebook), FALSE);
    gtk_notebook_set_show_tabs (GTK_NOTEBOOK (priv->notebook), FALSE);

    /* Page for "No URL displayed" message.  */

    gtk_notebook_append_page (GTK_NOTEBOOK (priv->notebook), create_label_for_empty_page (), NULL);

    /* Put things into a paned and the paned into the GnomeApp.  */

    priv->view_vbox = gtk_vbox_new (FALSE, 0);
    gtk_container_set_border_width (GTK_CONTAINER (priv->view_vbox), 2);

    priv->view_title_bar = e_shell_folder_title_bar_new ();
    gtk_signal_connect (GTK_OBJECT (priv->view_title_bar), "title_toggled",
                GTK_SIGNAL_FUNC (title_bar_toggled_cb), shell_view);

    priv->view_hpaned = e_hpaned_new ();
    e_paned_pack1 (E_PANED (priv->view_hpaned), priv->storage_set_view_box, FALSE, FALSE);
    e_paned_pack2 (E_PANED (priv->view_hpaned), priv->notebook, TRUE, FALSE);
    e_paned_set_position (E_PANED (priv->view_hpaned), DEFAULT_TREE_WIDTH);

    gtk_box_pack_start (GTK_BOX (priv->view_vbox), priv->view_title_bar,
                FALSE, FALSE, 0);
    gtk_box_pack_start (GTK_BOX (priv->view_vbox), priv->view_hpaned,
                TRUE, TRUE, 2);

    priv->hpaned = e_hpaned_new ();
    gtk_container_add (GTK_CONTAINER (priv->shortcut_frame), priv->shortcut_bar);
    e_paned_pack1 (E_PANED (priv->hpaned), priv->shortcut_frame, FALSE, FALSE);
    e_paned_pack2 (E_PANED (priv->hpaned), priv->view_vbox, TRUE, FALSE);
    e_paned_set_position (E_PANED (priv->hpaned), DEFAULT_SHORTCUT_BAR_WIDTH);

    bonobo_window_set_contents (BONOBO_WINDOW (shell_view), priv->hpaned);

    /* Show stuff.  */

    gtk_widget_show (priv->shortcut_frame);
    gtk_widget_show (priv->shortcut_bar);
    gtk_widget_show (priv->storage_set_view);
    gtk_widget_show (priv->storage_set_view_box);
    gtk_widget_show (priv->notebook);
    gtk_widget_show (priv->hpaned);
    gtk_widget_show (priv->view_hpaned);
    gtk_widget_show (priv->view_vbox);
    gtk_widget_show (priv->view_title_bar);

    /* By default, both the folder bar and shortcut bar are visible.  */
    priv->shortcut_bar_mode = E_SHELL_VIEW_SUBWINDOW_STICKY;
    priv->folder_bar_mode   = E_SHELL_VIEW_SUBWINDOW_STICKY;

    /* FIXME: Session management and stuff?  */
    gtk_window_set_default_size (GTK_WINDOW (shell_view), DEFAULT_WIDTH, DEFAULT_HEIGHT);
}


/* GtkObject methods.  */

static void
hash_forall_destroy_control (void *name,
                 void *value,
                 void *data)
{
    BonoboWidget *bonobo_widget;

    bonobo_widget = BONOBO_WIDGET (value);
    gtk_widget_destroy (GTK_WIDGET (bonobo_widget));

    g_free (name);
}

static void
destroy (GtkObject *object)
{
    EShellView *shell_view;
    EShellViewPrivate *priv;
    GList *p;

    shell_view = E_SHELL_VIEW (object);
    priv = shell_view->priv;

    gtk_object_unref (GTK_OBJECT (priv->tooltips));

    if (priv->corba_interface != NULL)
        bonobo_object_unref (BONOBO_OBJECT (priv->corba_interface));

    for (p = priv->sockets; p != NULL; p = p->next) {
        GtkWidget *socket_widget;
        int destroy_connection_id;

        socket_widget = GTK_WIDGET (p->data);
        destroy_connection_id = GPOINTER_TO_INT (gtk_object_get_data (GTK_OBJECT (socket_widget),
                                          "e_shell_view_destroy_connection_id"));
        gtk_signal_disconnect (GTK_OBJECT (socket_widget), destroy_connection_id);
    }

    g_hash_table_foreach (priv->uri_to_control, hash_forall_destroy_control, NULL);
    g_hash_table_destroy (priv->uri_to_control);

    gtk_widget_destroy (priv->offline_toggle);
    gtk_widget_destroy (priv->progress_bar);

    bonobo_object_unref (BONOBO_OBJECT (priv->ui_component));

    g_free (priv->uri);

    if (priv->progress_bar_timeout_id != 0)
        gtk_timeout_remove (priv->progress_bar_timeout_id);

    g_free (priv);

    (* GTK_OBJECT_CLASS (parent_class)->destroy) (object);
}

static  int
delete_event (GtkWidget *widget,
          GdkEventAny *event)
{
    EShell *shell;

    shell = e_shell_view_get_shell (E_SHELL_VIEW (widget));

    /* FIXME: Is this right, or should it be FALSE? */
    return FALSE;
}


/* Initialization.  */

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

    object_class = (GtkObjectClass *) klass;

    object_class->destroy = destroy;

    parent_class = gtk_type_class (BONOBO_TYPE_WINDOW);

    signals[SHORTCUT_BAR_MODE_CHANGED]
        = gtk_signal_new ("shortcut_bar_mode_changed",
                  GTK_RUN_FIRST,
                  object_class->type,
                  GTK_SIGNAL_OFFSET (EShellViewClass, shortcut_bar_mode_changed),
                  gtk_marshal_NONE__INT,
                  GTK_TYPE_NONE, 1,
                  GTK_TYPE_INT);

    signals[FOLDER_BAR_MODE_CHANGED]
        = gtk_signal_new ("folder_bar_mode_changed",
                  GTK_RUN_FIRST,
                  object_class->type,
                  GTK_SIGNAL_OFFSET (EShellViewClass, folder_bar_mode_changed),
                  gtk_marshal_NONE__INT,
                  GTK_TYPE_NONE, 1,
                  GTK_TYPE_INT);

    gtk_object_class_add_signals (object_class, signals, LAST_SIGNAL);

    load_images ();
}

static void
init (EShellView *shell_view)
{
    EShellViewPrivate *priv;

    priv = g_new (EShellViewPrivate, 1);

    priv->shell                   = NULL;
    priv->corba_interface         = NULL;
    priv->ui_component            = NULL;
    priv->uri                     = NULL;
    priv->delayed_selection       = NULL;

    priv->tooltips                = gtk_tooltips_new ();

    priv->appbar                  = NULL;
    priv->hpaned                  = NULL;
    priv->view_hpaned             = NULL;
    priv->contents                = NULL;
    priv->notebook                = NULL;

    priv->storage_set_title_bar   = NULL;
    priv->storage_set_view        = NULL;
    priv->storage_set_view_box    = NULL;
    priv->shortcut_bar            = NULL;

    priv->progress_bar            = NULL;
    priv->offline_toggle          = NULL;
    priv->offline_toggle_pixmap   = NULL;

    priv->shortcut_bar_mode       = E_SHELL_VIEW_SUBWINDOW_HIDDEN;
    priv->folder_bar_mode         = E_SHELL_VIEW_SUBWINDOW_HIDDEN;

    priv->hpaned_position         = 0;
    priv->view_hpaned_position    = 0;

    priv->uri_to_control          = g_hash_table_new (g_str_hash, g_str_equal);

    priv->progress_bar_timeout_id = 0;
    priv->progress_bar_value      = 0;
    priv->sockets             = NULL;

    shell_view->priv = priv;
}


/* Progress bar handling.  */

#define PROGRESS_BAR_TIMEOUT 80

static int
progress_bar_timeout_cb (void *data)
{
    EShellView *shell_view;
    EShellViewPrivate *priv;
    GtkWidget *progress_bar;

    shell_view = E_SHELL_VIEW (data);
    priv = shell_view->priv;
    progress_bar = priv->progress_bar;

    priv->progress_bar_value = ! priv->progress_bar_value;
    gtk_progress_set_value (GTK_PROGRESS (progress_bar), priv->progress_bar_value);

    return TRUE;
}

static void
start_progress_bar (EShellView *shell_view)
{
    EShellViewPrivate *priv;
    GtkProgress *progress;

    priv = shell_view->priv;

    progress = GTK_PROGRESS (priv->progress_bar);

    if (!GTK_WIDGET_REALIZED (progress))
        return;
        
    if (priv->progress_bar_timeout_id != 0)
        return;
    
    priv->progress_bar_timeout_id = gtk_timeout_add (PROGRESS_BAR_TIMEOUT, progress_bar_timeout_cb, shell_view);
    
    gtk_progress_set_activity_mode (progress, TRUE);
    gtk_progress_set_value (progress, priv->progress_bar_value);
}

static void
stop_progress_bar (EShellView *shell_view)
{
    EShellViewPrivate *priv;
    GtkWidget *progress_bar;

    priv = shell_view->priv;
    progress_bar = priv->progress_bar;

    if (priv->progress_bar_timeout_id != 0) {
        gtk_timeout_remove (priv->progress_bar_timeout_id);
        priv->progress_bar_timeout_id = 0;
    }

    if (!GTK_WIDGET_REALIZED (progress_bar))
        return;

    gtk_progress_set_activity_mode (GTK_PROGRESS (progress_bar), FALSE);
    gtk_progress_set_value (GTK_PROGRESS (progress_bar), 0);
}


/* EvolutionShellView interface callbacks.  */

static void
corba_interface_set_message_cb (EvolutionShellView *shell_view,
                     const char *message,
                     gboolean busy,
                     void *data)
{
    char *status;
    EShellView *view;

    view = E_SHELL_VIEW (data);

    g_return_if_fail (view != NULL);

    if (message != NULL) {
        const char *newline;
        
        newline = strchr (message, '\n');
        if (newline == NULL)
            status = g_strdup (message);
        else
            status = g_strndup (message, newline - message);
    } else {
        status = g_strdup ("");
    }

    bonobo_ui_component_set_status (view->priv->ui_component, status, NULL);

    g_free (status);

    if (busy)
        start_progress_bar (E_SHELL_VIEW (data));
    else
        stop_progress_bar (E_SHELL_VIEW (data));
}

static void
corba_interface_unset_message_cb (EvolutionShellView *shell_view,
                       void *data)
{
    EShellView *view;

    view = E_SHELL_VIEW (data);

    g_return_if_fail (view != NULL);

    bonobo_ui_component_set_status (view->priv->ui_component, "", NULL);

    stop_progress_bar (E_SHELL_VIEW (data));
}

static void
corba_interface_change_current_view_cb (EvolutionShellView *shell_view,
                         const char *uri,
                         void *data)
{
    EShellView *view;

    view = E_SHELL_VIEW (data);

    g_return_if_fail (view != NULL);

    e_shell_view_display_uri (view, uri);
}

static void
corba_interface_set_title (EvolutionShellView *shell_view,
               const char *title,
               void *data)
{
    EShellView *view;

    view = E_SHELL_VIEW (data);
    
    g_return_if_fail (view != NULL);

    gtk_window_set_title (GTK_WINDOW (view), title);
}

static void
corba_interface_set_folder_bar_label (EvolutionShellView *evolution_shell_view,
                      const char *text,
                      void *data)
{
    EShellView *shell_view;
    EShellViewPrivate *priv;

    g_return_if_fail (data != NULL);
    g_return_if_fail (E_IS_SHELL_VIEW (data));

    shell_view = E_SHELL_VIEW (data);
    priv = shell_view->priv;

    e_shell_folder_title_bar_set_folder_bar_label (E_SHELL_FOLDER_TITLE_BAR (priv->view_title_bar),
                               text);
}

static void
unmerge_on_error (BonoboObject *object,
          CORBA_Object  cobject,
          CORBA_Environment *ev)
{
    BonoboWindow *win;

    win = bonobo_ui_container_get_win (BONOBO_UI_CONTAINER (object));

    if (win)
        bonobo_window_deregister_component_by_ref (win, cobject);
}

static void
updated_folder_cb (EStorageSet *storage_set,
           const char *path,
           void *data)
{
    EShellView *shell_view;
    EShellViewPrivate *priv;
    char *uri;

    shell_view = E_SHELL_VIEW (data);
    priv = shell_view->priv;

    uri = g_strconcat (E_SHELL_URI_PREFIX, path, NULL);

    /* Update the shortcut bar */
    e_shortcuts_update_shortcut_by_uri (e_shell_get_shortcuts (priv->shell), uri);
    g_free (uri);

    /* Update the folder title bar and the window title bar */
    update_for_current_uri (shell_view);
}


/* Shell callbacks.  */

static void
shell_line_status_changed_cb (EShell *shell,
                  EShellLineStatus new_status,
                  void *data)
{
    EShellView *shell_view;

    shell_view = E_SHELL_VIEW (data);
    update_offline_toggle_status (shell_view);
}


EShellView *
e_shell_view_construct (EShellView *shell_view,
            EShell     *shell)
{
    EShellViewPrivate *priv;
    EShellView *view;
    GtkObject *window;

    g_return_val_if_fail (shell != NULL, NULL);
    g_return_val_if_fail (shell_view != NULL, NULL);
    g_return_val_if_fail (E_IS_SHELL (shell), NULL);
    g_return_val_if_fail (E_IS_SHELL_VIEW (shell_view), NULL);

    priv = shell_view->priv;

    view = E_SHELL_VIEW (bonobo_window_construct (BONOBO_WINDOW (shell_view), "evolution", "Evolution"));

    if (!view) {
        gtk_object_unref (GTK_OBJECT (shell_view));
        return NULL;
    }       

    window = GTK_OBJECT (view);

    gtk_signal_connect (window, "delete_event", GTK_SIGNAL_FUNC (delete_event), NULL);

    priv->shell = shell;

    gtk_signal_connect_while_alive (GTK_OBJECT (e_shell_get_storage_set (priv->shell)), "updated_folder",
                    updated_folder_cb, shell_view, GTK_OBJECT (shell_view));

    priv->ui_container = bonobo_ui_container_new ();
    bonobo_ui_container_set_win (priv->ui_container, BONOBO_WINDOW (shell_view));
    gtk_signal_connect (GTK_OBJECT (priv->ui_container),
                "system_exception", GTK_SIGNAL_FUNC (unmerge_on_error), NULL);

    priv->ui_component = bonobo_ui_component_new ("evolution");
    bonobo_ui_component_set_container (priv->ui_component,
                       bonobo_object_corba_objref (BONOBO_OBJECT (priv->ui_container)));

    bonobo_ui_component_freeze (priv->ui_component, NULL);

    bonobo_ui_util_set_ui (priv->ui_component, EVOLUTION_DATADIR, "evolution.xml", "evolution");

    setup_widgets (shell_view);

    bonobo_ui_engine_config_set_path (bonobo_window_get_ui_engine (BONOBO_WINDOW (shell_view)),
                      "/evolution/UIConf/kvps");
    e_shell_view_menu_setup (shell_view);

    e_shell_view_set_folder_bar_mode (shell_view, E_SHELL_VIEW_SUBWINDOW_HIDDEN);

    bonobo_ui_component_thaw (priv->ui_component, NULL);

    gtk_signal_connect (GTK_OBJECT (shell), "line_status_changed",
                GTK_SIGNAL_FUNC (shell_line_status_changed_cb), view);

    return view;
}

EShellView *
e_shell_view_new (EShell *shell)
{
    GtkWidget *new;

    g_return_val_if_fail (shell != NULL, NULL);
    g_return_val_if_fail (E_IS_SHELL (shell), NULL);

    new = gtk_type_new (e_shell_view_get_type ());

    return e_shell_view_construct (E_SHELL_VIEW (new), shell);
}

const GNOME_Evolution_ShellView
e_shell_view_get_corba_interface (EShellView *shell_view)
{
    EShellViewPrivate *priv;

    g_return_val_if_fail (shell_view != NULL, CORBA_OBJECT_NIL);
    g_return_val_if_fail (E_IS_SHELL_VIEW (shell_view), CORBA_OBJECT_NIL);

    priv = shell_view->priv;

    return bonobo_object_corba_objref (BONOBO_OBJECT (priv->corba_interface));
}


static const char *
get_storage_set_path_from_uri (const char *uri)
{
    const char *colon;

    if (uri == NULL)
        return NULL;

    if (g_path_is_absolute (uri))
        return NULL;

    colon = strchr (uri, ':');
    if (colon == NULL || colon == uri || colon[1] == '\0')
        return NULL;

    if (! g_path_is_absolute (colon + 1))
        return NULL;

    if (g_strncasecmp (uri, E_SHELL_URI_PREFIX, colon - uri) != 0)
        return NULL;

    return colon + 1;
}

static void
update_window_icon (EShellView *shell_view,
            EFolder *folder,
            gboolean is_my_evolution)
{
    EShellViewPrivate *priv;
    const char *type;
    const char *icon_name;
    char *icon_path;

    priv = shell_view->priv;

    if (folder == NULL) {
        if (is_my_evolution) {
            type = "My Evolution";
        } else {
            type = NULL;
        }
    } else {
        type = e_folder_get_type_string (folder);
    }

    if (type == NULL) {
        icon_path = NULL;
    } else {
        EFolderTypeRegistry *folder_type_registry;

        folder_type_registry = e_shell_get_folder_type_registry (priv->shell);
        icon_name = e_folder_type_registry_get_icon_name_for_type (folder_type_registry, type);
        if (icon_name == NULL)
            icon_path = NULL;
        else
            icon_path = e_shell_get_icon_path (icon_name, TRUE);
    }

    if (icon_path == NULL) {
        gnome_window_icon_set_from_default (GTK_WINDOW (shell_view));
    } else {
        gnome_window_icon_set_from_file (GTK_WINDOW (shell_view), icon_path);
        g_free (icon_path);
    }
}

static void
update_folder_title_bar (EShellView *shell_view,
             EFolder *folder,
             gboolean is_my_evolution)
{
    EShellViewPrivate *priv;
    EFolderTypeRegistry *folder_type_registry;
    GdkPixbuf *folder_icon;
    const char *folder_name;
    const char *folder_type_name;

    priv = shell_view->priv;

    if (folder == NULL) {
        if (is_my_evolution) {
            folder_type_name = "My Evolution";
        } else {
            folder_type_name = NULL;
        }
    } else {
        folder_type_name = e_folder_get_type_string (folder);
    }

    if (folder_type_name == NULL) {
        folder_name = NULL;
        folder_icon = NULL;
    } else {
        folder_type_registry = e_shell_get_folder_type_registry (priv->shell);
        folder_icon = e_folder_type_registry_get_icon_for_type (folder_type_registry,
                                    folder_type_name,
                                    TRUE);
        if (is_my_evolution) {
            folder_name = "My Evolution";
        } else {
            folder_name = e_folder_get_name (folder);
        }
    }

    if (folder_icon)
        e_shell_folder_title_bar_set_icon (E_SHELL_FOLDER_TITLE_BAR (priv->view_title_bar), folder_icon);
    if (folder_name) {
        gchar * utf;
        utf = e_utf8_to_gtk_string (GTK_WIDGET (priv->view_title_bar), folder_name);
        e_shell_folder_title_bar_set_title (E_SHELL_FOLDER_TITLE_BAR (priv->view_title_bar), utf);
        g_free (utf);
    }
}

static void
update_for_current_uri (EShellView *shell_view)
{
    EShellViewPrivate *priv;
    EFolder *folder;
    char *folder_name;
    const char *path;
    char *window_title;
    gboolean is_my_evolution = FALSE;

    priv = shell_view->priv;

    path = get_storage_set_path_from_uri (priv->uri);

    if (priv->uri != NULL && strcmp (priv->uri, "evolution:/My Evolution") == 0) {
        /* Special case for My Evolution */
        folder_name = g_strdup (_("My Evolution"));
        is_my_evolution = TRUE;
        folder = NULL;
    } else {
        if (path == NULL)
            folder = NULL;
        else
            folder = e_storage_set_get_folder (e_shell_get_storage_set (priv->shell),
                               path);
        
        if (folder == NULL)
            folder_name = g_strdup (_("None"));
        else
            folder_name = e_utf8_to_gtk_string ((GtkWidget *) shell_view, e_folder_get_name (folder));
    }

    if (SUB_VERSION[0] == '\0')
        window_title = g_strdup_printf (_("%s - Evolution %s"), folder_name, VERSION);
    else
        window_title = g_strdup_printf (_("%s - Evolution %s [%s]"), folder_name, VERSION, SUB_VERSION);

    gtk_window_set_title (GTK_WINDOW (shell_view), window_title);
    g_free (window_title);
    g_free (folder_name);
    
    update_folder_title_bar (shell_view, folder, is_my_evolution);
    
    update_window_icon (shell_view, folder, is_my_evolution);

    gtk_signal_handler_block_by_func (GTK_OBJECT (priv->storage_set_view),
                      GTK_SIGNAL_FUNC (folder_selected_cb),
                      shell_view);

    if (path != NULL)
        e_storage_set_view_set_current_folder (E_STORAGE_SET_VIEW (priv->storage_set_view), path);

    gtk_signal_handler_unblock_by_func (GTK_OBJECT (priv->storage_set_view),
                        GTK_SIGNAL_FUNC (folder_selected_cb),
                        shell_view);
}

static void
update_offline_toggle_status (EShellView *shell_view)
{
    EShellViewPrivate *priv;
    GdkPixmap *icon_pixmap;
    GdkBitmap *icon_mask;
    const char *tooltip;
    gboolean sensitive;

    priv = shell_view->priv;

    switch (e_shell_get_line_status (priv->shell)) {
    case E_SHELL_LINE_STATUS_ONLINE:
        icon_pixmap = online_pixmap;
        icon_mask   = online_mask;
        sensitive   = TRUE;
        tooltip     = _("Evolution is currently online.  "
                "Click on this button to work offline.");
        break;
    case E_SHELL_LINE_STATUS_GOING_OFFLINE:
        icon_pixmap = online_pixmap;
        icon_mask   = online_mask;
        sensitive   = FALSE;
        tooltip     = _("Evolution is in the process of going offline.");
        break;
    case E_SHELL_LINE_STATUS_OFFLINE:
        icon_pixmap = offline_pixmap;
        icon_mask   = offline_mask;
        sensitive   = TRUE;
        tooltip     = _("Evolution is currently offline.  "
                "Click on this button to work online.");
        break;
    default:
        g_assert_not_reached ();
        return;
    }

    gtk_pixmap_set (GTK_PIXMAP (priv->offline_toggle_pixmap), icon_pixmap, icon_mask);
    gtk_widget_set_sensitive (priv->offline_toggle, sensitive);
    gtk_tooltips_set_tip (priv->tooltips, priv->offline_toggle, tooltip, NULL);
}

/* This displays the specified page, doing the appropriate Bonobo activation/deactivation
   magic to make sure things work nicely.  FIXME: Crappy way to solve the issue.  */
static void
set_current_notebook_page (EShellView *shell_view,
               int page_num)
{
    EShellViewPrivate *priv;
    GtkNotebook *notebook;
    GtkWidget *current;
    BonoboControlFrame *control_frame;
    int current_page;

    priv = shell_view->priv;
    notebook = GTK_NOTEBOOK (priv->notebook);

    current_page = gtk_notebook_get_current_page (notebook);
    if (current_page == page_num)
        return;

    if (current_page != -1 && current_page != 0) {
        current = gtk_notebook_get_nth_page (notebook, current_page);
        control_frame = bonobo_widget_get_control_frame (BONOBO_WIDGET (current));

        bonobo_control_frame_set_autoactivate (control_frame, FALSE);
        bonobo_control_frame_control_deactivate (control_frame);
    }

    gtk_notebook_set_page (notebook, page_num);

    if (page_num == -1 || page_num == 0)
        return;

    current = gtk_notebook_get_nth_page (notebook, page_num);
    control_frame = bonobo_widget_get_control_frame (BONOBO_WIDGET (current));

    bonobo_control_frame_set_autoactivate (control_frame, FALSE);
    bonobo_control_frame_control_activate (control_frame);
}

static void
setup_corba_interface (EShellView *shell_view,
               GtkWidget *control)
{
    EShellViewPrivate *priv;
    BonoboControlFrame *control_frame;
    EvolutionShellView *corba_interface;

    g_return_if_fail (control != NULL);

    priv = shell_view->priv;

    control_frame = bonobo_widget_get_control_frame (BONOBO_WIDGET (control));
    corba_interface = evolution_shell_view_new ();

    gtk_signal_connect_while_alive (GTK_OBJECT (corba_interface), "set_message",
                    GTK_SIGNAL_FUNC (corba_interface_set_message_cb),
                    shell_view, GTK_OBJECT (shell_view));
    gtk_signal_connect_while_alive (GTK_OBJECT (corba_interface), "unset_message",
                    GTK_SIGNAL_FUNC (corba_interface_unset_message_cb),
                    shell_view, GTK_OBJECT (shell_view));
    gtk_signal_connect_while_alive (GTK_OBJECT (corba_interface), "change_current_view",
                    GTK_SIGNAL_FUNC (corba_interface_change_current_view_cb),
                    shell_view, GTK_OBJECT (shell_view));
    gtk_signal_connect_while_alive (GTK_OBJECT (corba_interface), "set_title",
                    GTK_SIGNAL_FUNC (corba_interface_set_title),
                    shell_view, GTK_OBJECT (shell_view));
    gtk_signal_connect_while_alive (GTK_OBJECT (corba_interface), "set_folder_bar_label",
                    GTK_SIGNAL_FUNC (corba_interface_set_folder_bar_label),
                    shell_view, GTK_OBJECT (shell_view));

    bonobo_object_add_interface (BONOBO_OBJECT (control_frame),
                     BONOBO_OBJECT (corba_interface));

    bonobo_object_ref (BONOBO_OBJECT (corba_interface));
    priv->corba_interface = corba_interface;
}


/* Socket destruction handling.  */

static GtkWidget *
find_socket (GtkContainer *container)
{
    GList *children, *tmp;

    children = gtk_container_children (container);
    while (children) {
        if (BONOBO_IS_SOCKET (children->data))
            return children->data;
        else if (GTK_IS_CONTAINER (children->data)) {
            GtkWidget *socket = find_socket (children->data);
            if (socket)
                return socket;
        }
        tmp = children->next;
        g_list_free_1 (children);
        children = tmp;
    }
    return NULL;
}

static void
socket_destroy_cb (GtkWidget *socket_widget, gpointer data)
{
    EShellView *shell_view;
    EShellViewPrivate *priv;
    EFolder *folder;
    GtkWidget *control;
    const char *uri;
    gboolean viewing_closed_uri;
    char *copy_of_uri;

    shell_view = E_SHELL_VIEW (data);
    priv = shell_view->priv;

    uri = (const char *) gtk_object_get_data (GTK_OBJECT (socket_widget), "e_shell_view_folder_uri");

    /* Strdup here as the string will be freed when the socket is destroyed.  */
    copy_of_uri = g_strdup (uri);

    control = g_hash_table_lookup (priv->uri_to_control, uri);
    if (control == NULL) {
        g_warning ("What?! Destroyed socket for non-existing URI?  -- %s", uri);
        return;
    }

    priv->sockets = g_list_remove (priv->sockets, socket_widget);

    gtk_widget_destroy (control);
    g_hash_table_remove (priv->uri_to_control, uri);

    folder = e_storage_set_get_folder (e_shell_get_storage_set (priv->shell),
                       get_storage_set_path_from_uri (uri));

    /* See if we were actively viewing the uri for the socket that's being closed */
    viewing_closed_uri = !strcmp (uri, e_shell_view_get_current_uri (shell_view));

    if (viewing_closed_uri)
        e_shell_view_display_uri (shell_view, NULL);

    e_shell_component_maybe_crashed (priv->shell,
                     uri,
                     e_folder_get_type_string (folder),
                     shell_view);

    /* We were actively viewing the component that just crashed, so flip to the Inbox */
    if (viewing_closed_uri)
        e_shell_view_display_uri (shell_view, DEFAULT_URI);

    g_free (copy_of_uri);
}


static const char *
get_type_for_storage (EShellView *shell_view,
              const char *name,
              const char **physical_uri_return)
{
    EShellViewPrivate *priv;
    EStorageSet *storage_set;
    EStorage *storage;

    priv = shell_view->priv;

    storage_set = e_shell_get_storage_set (priv->shell);
    storage = e_storage_set_get_storage (storage_set, name);
    if (!storage)
        return NULL;

    *physical_uri_return = e_storage_get_toplevel_node_uri (storage);

    return e_storage_get_toplevel_node_type (storage);
}

static const char *
get_type_for_folder (EShellView *shell_view,
             const char *path,
             const char **physical_uri_return)
{
    EShellViewPrivate *priv;
    EStorageSet *storage_set;
    EFolderTypeRegistry *folder_type_registry;
    EFolder *folder;

    priv = shell_view->priv;

    storage_set = e_shell_get_storage_set (priv->shell);
    folder = e_storage_set_get_folder (storage_set, path);
    if (!folder)
        return NULL;

    *physical_uri_return = e_folder_get_physical_uri (folder);

    folder_type_registry = e_shell_get_folder_type_registry (e_shell_view_get_shell (shell_view));

    return e_folder_get_type_string (folder);
}

/* Create a new view for @uri with @control.  It assumes a view for @uri does not exist yet.  */
static GtkWidget *
get_control_for_uri (EShellView *shell_view,
             const char *uri)
{
    EShellViewPrivate *priv;
    CORBA_Environment ev;
    EvolutionShellComponentClient *handler_client;
    EFolderTypeRegistry *folder_type_registry;
    GNOME_Evolution_ShellComponent handler;
    Bonobo_UIContainer container;
    GtkWidget *control;
    GtkWidget *socket;
    Bonobo_Control corba_control;
    const char *path;
    const char *slash;
    const char *physical_uri;
    const char *folder_type;
    int destroy_connection_id;

    priv = shell_view->priv;

    path = strchr (uri, ':');
    if (path == NULL)
        return NULL;

    path++;
    if (*path == '\0')
        return NULL;

    /* Hack for My Evolution */
    if (strcmp (path, "/My Evolution") == 0) {
        folder_type = "My Evolution";
        physical_uri = "";
    } else {
        /* FIXME: This code needs to be made more robust.  */
        
        slash = strchr (path + 1, G_DIR_SEPARATOR);
        if (slash == NULL || slash[1] == '\0')
            folder_type = get_type_for_storage (shell_view, path + 1, &physical_uri);
        else
            folder_type = get_type_for_folder (shell_view, path, &physical_uri);
        if (folder_type == NULL)
            return NULL;
    }

    folder_type_registry = e_shell_get_folder_type_registry (e_shell_view_get_shell (shell_view));

    handler_client = e_folder_type_registry_get_handler_for_type (folder_type_registry, folder_type);
    if (handler_client == CORBA_OBJECT_NIL)
        return NULL;

    handler = bonobo_object_corba_objref (BONOBO_OBJECT (handler_client));

    CORBA_exception_init (&ev);

    corba_control = GNOME_Evolution_ShellComponent_createView (handler, physical_uri, folder_type, &ev);

    if (ev._major != CORBA_NO_EXCEPTION) {
        CORBA_exception_free (&ev);
        return NULL;
    }

    CORBA_exception_free (&ev);

    if (corba_control == CORBA_OBJECT_NIL)
        return NULL;

    container = bonobo_ui_component_get_container (priv->ui_component);
    control = bonobo_widget_new_control_from_objref (corba_control, container);

    socket = find_socket (GTK_CONTAINER (control));
    destroy_connection_id = gtk_signal_connect (GTK_OBJECT (socket), "destroy",
                            GTK_SIGNAL_FUNC (socket_destroy_cb),
                            shell_view);
    gtk_object_set_data (GTK_OBJECT (socket),
                 "e_shell_view_destroy_connection_id",
                 GINT_TO_POINTER (destroy_connection_id));
    gtk_object_set_data_full (GTK_OBJECT (socket), "e_shell_view_folder_uri", g_strdup (uri), g_free);

    priv->sockets = g_list_prepend (priv->sockets, socket);

    setup_corba_interface (shell_view, control);

    return control;
}

static gboolean
show_existing_view (EShellView *shell_view,
            const char *uri,
            GtkWidget *control)
{
    EShellViewPrivate *priv;
    int notebook_page;

    priv = shell_view->priv;

    notebook_page = gtk_notebook_page_num (GTK_NOTEBOOK (priv->notebook), control);
    g_assert (notebook_page != -1);

    /* A BonoboWidget can be a "zombie" in the sense that its actual
       control is dead; if it's zombie, we have to recreate it.  */
    if (bonobo_widget_is_dead (BONOBO_WIDGET (control))) {
        GtkWidget *parent;

        parent = control->parent;

        /* Out with the old.  */
        gtk_container_remove (GTK_CONTAINER (parent), control);
        g_hash_table_remove (priv->uri_to_control, uri);

        /* In with the new.  */
        control = get_control_for_uri (shell_view, uri);
        if (control == NULL)
            return FALSE;

        gtk_container_add (GTK_CONTAINER (parent), control);
        g_hash_table_insert (priv->uri_to_control, g_strdup (uri), control);

        /* Show.  */
        gtk_widget_show (control);
    }

    g_free (priv->uri);
    priv->uri = g_strdup (uri);

    set_current_notebook_page (shell_view, notebook_page);

    return TRUE;
}

static gboolean
create_new_view_for_uri (EShellView *shell_view,
             const char *uri)
{
    GtkWidget *control;
    EShellViewPrivate *priv;
    int page_num;

    priv = shell_view->priv;

    control = get_control_for_uri (shell_view, uri);
    if (control == NULL)
        return FALSE;

    g_free (priv->uri);
    priv->uri = g_strdup (uri);

    gtk_widget_show (control);

    gtk_notebook_append_page (GTK_NOTEBOOK (priv->notebook), control, NULL);

    page_num = gtk_notebook_page_num (GTK_NOTEBOOK (priv->notebook), control);
    g_assert (page_num != -1);
    set_current_notebook_page (shell_view, page_num);

    g_hash_table_insert (priv->uri_to_control, g_strdup (uri), control);

    return TRUE;
}

gboolean
e_shell_view_display_uri (EShellView *shell_view,
              const char *uri)
{
    EShellViewPrivate *priv;
    GtkWidget *control;
    gboolean retval;

    g_return_val_if_fail (shell_view != NULL, FALSE);
    g_return_val_if_fail (E_IS_SHELL_VIEW (shell_view), FALSE);

    priv = shell_view->priv;

    bonobo_window_freeze (BONOBO_WINDOW (shell_view));

    if (uri == NULL) {
        gtk_notebook_remove_page (GTK_NOTEBOOK (priv->notebook), 0);
        gtk_notebook_prepend_page (GTK_NOTEBOOK (priv->notebook), create_label_for_empty_page (), NULL);

        set_current_notebook_page (shell_view, 0);

        if (priv->uri != NULL) {
            g_free (priv->uri);
            priv->uri = NULL;
        }

        retval = TRUE;

        goto end;
    }

    if (strncmp (uri, E_SHELL_URI_PREFIX, E_SHELL_URI_PREFIX_LEN) != 0) {
        retval = FALSE;
        goto end;
    }

    control = g_hash_table_lookup (priv->uri_to_control, uri);
    if (control != NULL) {
        g_assert (GTK_IS_WIDGET (control));
        show_existing_view (shell_view, uri, control);
    } else if (! create_new_view_for_uri (shell_view, uri)) {
        priv->delayed_selection = g_strdup (uri);
        gtk_signal_connect_after (GTK_OBJECT (e_shell_get_storage_set (priv->shell)), "new_folder",
                      GTK_SIGNAL_FUNC (new_folder_cb), shell_view);
        retval = FALSE;
        goto end;
    }

    retval = TRUE;

 end:
    update_for_current_uri (shell_view);

    bonobo_window_thaw (BONOBO_WINDOW (shell_view));

    return retval;
}


void
e_shell_view_set_shortcut_bar_mode (EShellView *shell_view,
                    EShellViewSubwindowMode mode)
{
    EShellViewPrivate *priv;

    g_return_if_fail (shell_view != NULL);
    g_return_if_fail (E_IS_SHELL_VIEW (shell_view));
    g_return_if_fail (mode == E_SHELL_VIEW_SUBWINDOW_STICKY
              || mode == E_SHELL_VIEW_SUBWINDOW_HIDDEN);

    priv = shell_view->priv;

    if (priv->shortcut_bar_mode == mode)
        return;

    if (mode == E_SHELL_VIEW_SUBWINDOW_STICKY) {
        if (! GTK_WIDGET_VISIBLE (priv->shortcut_frame)) {
            gtk_widget_show (priv->shortcut_frame);
            e_paned_set_position (E_PANED (priv->hpaned), priv->hpaned_position);
        }
    } else {
        if (GTK_WIDGET_VISIBLE (priv->shortcut_frame)) {
            gtk_widget_hide (priv->shortcut_frame);
            /* FIXME this is a private field!  */
            priv->hpaned_position = E_PANED (priv->hpaned)->child1_size;
            e_paned_set_position (E_PANED (priv->hpaned), 0);
        }
    }

    priv->shortcut_bar_mode = mode;

    gtk_signal_emit (GTK_OBJECT (shell_view), signals[SHORTCUT_BAR_MODE_CHANGED], mode);
}

/**
 * e_shell_view_set_folder_bar_mode:
 * @shell_view: 
 * @mode: 
 * 
 * Set the visualization mode for the folder bar's subwindow.
 **/
void
e_shell_view_set_folder_bar_mode (EShellView *shell_view,
                  EShellViewSubwindowMode mode)
{
    EShellViewPrivate *priv;

    g_return_if_fail (shell_view != NULL);
    g_return_if_fail (E_IS_SHELL_VIEW (shell_view));
    g_return_if_fail (mode == E_SHELL_VIEW_SUBWINDOW_STICKY
              || mode == E_SHELL_VIEW_SUBWINDOW_HIDDEN);

    priv = shell_view->priv;

    if (priv->folder_bar_mode == mode)
        return;

    if (mode == E_SHELL_VIEW_SUBWINDOW_STICKY) {
        if (! GTK_WIDGET_VISIBLE (priv->storage_set_view_box)) {
            gtk_widget_show (priv->storage_set_view_box);
            e_paned_set_position (E_PANED (priv->view_hpaned), priv->view_hpaned_position);
        }

        e_title_bar_set_button_mode (E_TITLE_BAR (priv->storage_set_title_bar),
                         E_TITLE_BAR_BUTTON_MODE_CLOSE);

        e_shell_folder_title_bar_set_clickable (E_SHELL_FOLDER_TITLE_BAR (priv->view_title_bar),
                            FALSE);
    } else {
        if (GTK_WIDGET_VISIBLE (priv->storage_set_view_box)) {
            gtk_widget_hide (priv->storage_set_view_box);
            /* FIXME this is a private field!  */
            priv->view_hpaned_position = E_PANED (priv->view_hpaned)->child1_size;
            e_paned_set_position (E_PANED (priv->view_hpaned), 0);
        }

        e_title_bar_set_button_mode (E_TITLE_BAR (priv->storage_set_title_bar),
                         E_TITLE_BAR_BUTTON_MODE_PIN);

        e_shell_folder_title_bar_set_clickable (E_SHELL_FOLDER_TITLE_BAR (priv->view_title_bar),
                            TRUE);
    }

        priv->folder_bar_mode = mode;

    gtk_signal_emit (GTK_OBJECT (shell_view), signals[FOLDER_BAR_MODE_CHANGED], mode);
}

EShellViewSubwindowMode
e_shell_view_get_shortcut_bar_mode (EShellView *shell_view)
{
    g_return_val_if_fail (shell_view != NULL, E_SHELL_VIEW_SUBWINDOW_HIDDEN);
    g_return_val_if_fail (E_IS_SHELL_VIEW (shell_view), E_SHELL_VIEW_SUBWINDOW_HIDDEN);

    return shell_view->priv->shortcut_bar_mode;
}

EShellViewSubwindowMode
e_shell_view_get_folder_bar_mode (EShellView *shell_view)
{
    g_return_val_if_fail (shell_view != NULL, E_SHELL_VIEW_SUBWINDOW_HIDDEN);
    g_return_val_if_fail (E_IS_SHELL_VIEW (shell_view), E_SHELL_VIEW_SUBWINDOW_HIDDEN);

    return shell_view->priv->folder_bar_mode;
}


EShell *
e_shell_view_get_shell (EShellView *shell_view)
{
    g_return_val_if_fail (shell_view != NULL, NULL);
    g_return_val_if_fail (E_IS_SHELL_VIEW (shell_view), NULL);

    return shell_view->priv->shell;
}

BonoboUIComponent *
e_shell_view_get_bonobo_ui_component (EShellView *shell_view)
{
    g_return_val_if_fail (shell_view != NULL, NULL);
    g_return_val_if_fail (E_IS_SHELL_VIEW (shell_view), NULL);

    return shell_view->priv->ui_component;
}

BonoboUIContainer *
e_shell_view_get_bonobo_ui_container (EShellView *shell_view)
{
    g_return_val_if_fail (shell_view != NULL, NULL);
    g_return_val_if_fail (E_IS_SHELL_VIEW (shell_view), NULL);

    return shell_view->priv->ui_container;
}

GtkWidget *
e_shell_view_get_appbar (EShellView *shell_view)
{
    g_return_val_if_fail (shell_view != NULL, NULL);
    g_return_val_if_fail (E_IS_SHELL_VIEW (shell_view), NULL);

    return shell_view->priv->appbar;
}

/**
 * e_shell_view_get_current_uri:
 * @shell_view: A pointer to an EShellView object
 * 
 * Get the URI currently displayed by this shell view.
 * 
 * Return value: 
 **/
const char *
e_shell_view_get_current_uri (EShellView *shell_view)
{
    g_return_val_if_fail (shell_view != NULL, NULL);
    g_return_val_if_fail (E_IS_SHELL_VIEW (shell_view), NULL);

    return shell_view->priv->uri;
}

/**
 * e_shell_view_get_current_path:
 * @shell_view: A pointer to an EShellView object
 * 
 * Get the path of the current displayed folder.
 * 
 * Return value: 
 **/
const char *
e_shell_view_get_current_path (EShellView *shell_view)
{
    const char *current_uri;
    const char *current_path;

    current_uri = e_shell_view_get_current_uri (shell_view);
    if (current_uri == NULL)
        return NULL;

    if (strncmp (current_uri, E_SHELL_URI_PREFIX, E_SHELL_URI_PREFIX_LEN) == 0)
        current_path = current_uri + E_SHELL_URI_PREFIX_LEN;
    else
        current_path = NULL;

    return current_path;
}

static void
save_shortcut_bar_icon_modes (EShellView *shell_view)
{
    EShellViewPrivate *priv;
    EShortcutBar *shortcut_bar;
    int num_groups;
    int group;

    priv = shell_view->priv;
    shortcut_bar = E_SHORTCUT_BAR (priv->shortcut_bar);

    num_groups = e_shortcut_model_get_num_groups (shortcut_bar->model);

    for (group = 0; group < num_groups; group++) {
        char *tmp;

        tmp = g_strdup_printf ("ShortcutBarGroup%dIconMode", group);
        gnome_config_set_int (tmp, e_shortcut_bar_get_view_type (shortcut_bar, group));
        g_free (tmp);
    }
}

static void
load_shortcut_bar_icon_modes (EShellView *shell_view)
{
    EShellViewPrivate *priv;
    EShortcutBar *shortcut_bar;
    int num_groups;
    int group;

    priv = shell_view->priv;
    shortcut_bar = E_SHORTCUT_BAR (priv->shortcut_bar);

    num_groups = e_shortcut_model_get_num_groups (shortcut_bar->model);

    for (group = 0; group < num_groups; group++) {
        char *tmp;
        int iconmode;

        tmp = g_strdup_printf ("ShortcutBarGroup%dIconMode", group);
        iconmode = gnome_config_get_int (tmp);
        g_free (tmp);

        e_shortcut_bar_set_view_type (shortcut_bar, group, iconmode);
    }
}

static char *
get_local_prefix_for_view (EShellView *shell_view,
               int view_num)
{
    EShellViewPrivate *priv;
    char *prefix;
    const char *local_directory;

    priv = shell_view->priv;

    local_directory = e_shell_get_local_directory (priv->shell);

    prefix = g_strdup_printf ("=%s/config/Shell=/Views/%d/",
                  local_directory, view_num);
    
    return prefix;
}


/**
 * e_shell_view_save_settings:
 * @shell_view: 
 * @prefix: 
 * 
 * Save settings for @shell_view at the specified gnome config @prefix
 * 
 * Return value: TRUE if successful, FALSE if not.
 **/
gboolean
e_shell_view_save_settings (EShellView *shell_view,
                int view_num)
{
    EShellViewPrivate *priv;
    const char *uri;
    char *prefix;
    char *filename;

    g_return_val_if_fail (shell_view != NULL, FALSE);
    g_return_val_if_fail (E_IS_SHELL_VIEW (shell_view), FALSE);

    priv = shell_view->priv;

    prefix = get_local_prefix_for_view (shell_view, view_num);
    g_return_val_if_fail (prefix != NULL, FALSE);

    gnome_config_push_prefix (prefix);

    gnome_config_set_int ("CurrentShortcutsGroupNum", e_shell_view_get_current_shortcuts_group_num (shell_view));
    gnome_config_set_int ("FolderBarMode",      e_shell_view_get_folder_bar_mode (shell_view));
    gnome_config_set_int ("ShortcutBarMode",    e_shell_view_get_shortcut_bar_mode (shell_view));
    gnome_config_set_int ("HPanedPosition",     e_paned_get_position (E_PANED (priv->hpaned)));
    gnome_config_set_int ("ViewHPanedPosition", e_paned_get_position (E_PANED (priv->view_hpaned)));

    uri = e_shell_view_get_current_uri (shell_view);
    if (uri != NULL)
        gnome_config_set_string ("DisplayedURI", uri);
    else
        gnome_config_set_string ("DisplayedURI", DEFAULT_URI);

    save_shortcut_bar_icon_modes (shell_view);

    gnome_config_pop_prefix ();

    /* Save the expanded state for this ShellViews StorageSetView */
    filename = g_strdup_printf ("%s/config/storage-set-view-expanded:view_%d",
                    e_shell_get_local_directory (priv->shell),
                    view_num);
    e_tree_save_expanded_state (E_TREE (priv->storage_set_view),
                    filename);

    g_free (filename);
    g_free (prefix);

    return TRUE;
}

/**
 * e_shell_view_load_settings:
 * @shell_view: 
 * @prefix: 
 * 
 * Load settings for @shell_view at the specified gnome config @prefix
 * 
 * Return value: 
 **/
gboolean
e_shell_view_load_settings (EShellView *shell_view,
                int view_num)
{
    EShellViewPrivate *priv;
    int val;
    char *stringval;
    char *prefix;
    char *filename;

    g_return_val_if_fail (shell_view != NULL, FALSE);
    g_return_val_if_fail (E_IS_SHELL_VIEW (shell_view), FALSE);

    priv = shell_view->priv;

    prefix = get_local_prefix_for_view (shell_view, view_num);
    g_return_val_if_fail (prefix != NULL, FALSE);

    gnome_config_push_prefix (prefix);

    val = gnome_config_get_int ("CurrentShortcutsGroupNum");
    e_shell_view_set_current_shortcuts_group_num (shell_view, val);

    val = gnome_config_get_int ("FolderBarMode");
    e_shell_view_set_folder_bar_mode (shell_view, val);

    val = gnome_config_get_int ("ShortcutBarMode");
    e_shell_view_set_shortcut_bar_mode (shell_view, val);

    val = gnome_config_get_int ("HPanedPosition");
    e_paned_set_position (E_PANED (priv->hpaned), val);

    val = gnome_config_get_int ("ViewHPanedPosition");
    e_paned_set_position (E_PANED (priv->view_hpaned), val);

    stringval = gnome_config_get_string ("DisplayedURI");
    if (! e_shell_view_display_uri (shell_view, stringval))
        e_shell_view_display_uri (shell_view, DEFAULT_URI);
    g_free (stringval);

    load_shortcut_bar_icon_modes (shell_view);

    gnome_config_pop_prefix ();

    /* Load the expanded state for the ShellView's StorageSetView */
    filename = g_strdup_printf ("%s/config/storage-set-view-expanded:view_%d",
                    e_shell_get_local_directory (priv->shell),
                    view_num);

    e_tree_load_expanded_state (E_TREE (priv->storage_set_view),
                    filename);

    g_free (filename);
    g_free (prefix);

    return TRUE;
}



E_MAKE_TYPE (e_shell_view, "EShellView", EShellView, class_init, init, BONOBO_TYPE_WINDOW)