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path: root/mail/folder-browser.c
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/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/*
 *  Authors: Miguel De Icaza <miguel@ximian.com>
 *           Jeffrey Stedfast <fejj@ximian.com>
 *
 *  Copyright 2000-2003 Ximian, Inc. (www.ximian.com)
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of version 2 of the GNU General Public
 * License as published by the Free Software Foundation.
 *
 * 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.
 *
 */


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

#include <string.h>
#include <ctype.h>
#include <errno.h>

#include <gdk/gdkkeysyms.h>
#include <gtk/gtkinvisible.h>
#include <gal/e-table/e-table.h>
#include <gal/util/e-util.h>
#include <gal/widgets/e-gui-utils.h>
#include <gal/widgets/e-popup-menu.h>

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

#include <libgnomeui/gnome-dialog-util.h>
#include <libgnomeui/gnome-pixmap.h>

#include <gtkhtml/htmlengine.h>
#include <gtkhtml/htmlobject.h>
#include <gtkhtml/htmlinterval.h>
#include <gtkhtml/htmlengine-edit-cut-and-paste.h>

#include "filter/vfolder-rule.h"
#include "filter/vfolder-context.h"
#include "filter/filter-option.h"
#include "filter/filter-input.h"
#include "filter/filter-label.h"

#include "e-util/e-sexp.h"
#include "e-util/e-mktemp.h"
#include "folder-browser.h"
#include "e-searching-tokenizer.h"
#include "mail.h"
#include "mail-callbacks.h"
#include "mail-tools.h"
#include "mail-ops.h"
#include "mail-vfolder.h"
#include "mail-autofilter.h"
#include "mail-mt.h"
#include "mail-folder-cache.h"
#include "folder-browser-ui.h"

#include "mail-local.h"
#include "mail-config.h"

#include <camel/camel-mime-message.h>
#include <camel/camel-stream-mem.h>

/* maybe this shooudlnt be private ... */
#include "camel/camel-search-private.h"

#define d(x) 

#define PARENT_TYPE (gtk_table_get_type ())

static void folder_changed(CamelObject *o, void *event_data, void *data);
static void main_folder_changed(CamelObject *o, void *event_data, void *data);

#define X_EVOLUTION_MESSAGE_TYPE "x-evolution-message"
#define MESSAGE_RFC822_TYPE      "message/rfc822"
#define TEXT_URI_LIST_TYPE       "text/uri-list"
#define TEXT_PLAIN_TYPE          "text/plain"

/* Drag & Drop types */
enum DndTargetType {
    DND_TARGET_TYPE_X_EVOLUTION_MESSAGE,
    DND_TARGET_TYPE_MESSAGE_RFC822,
    DND_TARGET_TYPE_TEXT_URI_LIST,
};

static GtkTargetEntry drag_types[] = {
    { X_EVOLUTION_MESSAGE_TYPE, 0, DND_TARGET_TYPE_X_EVOLUTION_MESSAGE },
    { MESSAGE_RFC822_TYPE, 0, DND_TARGET_TYPE_MESSAGE_RFC822 },
    { TEXT_URI_LIST_TYPE, 0, DND_TARGET_TYPE_TEXT_URI_LIST },
};

static const int num_drag_types = sizeof (drag_types) / sizeof (drag_types[0]);

enum PasteTargetType {
    PASTE_TARGET_TYPE_X_EVOLUTION_MESSAGE,
    PASTE_TARGET_TYPE_TEXT_PLAIN,
};

static GtkTargetPair paste_types[] = {
    { 0, 0, PASTE_TARGET_TYPE_X_EVOLUTION_MESSAGE },
    { GDK_SELECTION_TYPE_STRING, 0, PASTE_TARGET_TYPE_TEXT_PLAIN },
};

static const int num_paste_types = sizeof (paste_types) / sizeof (paste_types[0]);

static GdkAtom clipboard_atom = GDK_NONE;

static GtkTableClass *parent_class = NULL;

enum {
    FOLDER_LOADED,
    MESSAGE_LOADED,
    LAST_SIGNAL
};

static guint folder_browser_signals [LAST_SIGNAL] = {0, };

static void
folder_browser_finalise (GObject *object)
{
    FolderBrowser *folder_browser;
    
    folder_browser = FOLDER_BROWSER (object);
        
    g_free (folder_browser->loading_uid);
    g_free (folder_browser->pending_uid);
    g_free (folder_browser->new_uid);
    g_free (folder_browser->loaded_uid);
    
    g_free (folder_browser->uri);
    folder_browser->uri = NULL;
        
    if (folder_browser->clipboard_selection)
        g_byte_array_free (folder_browser->clipboard_selection, TRUE);
    
    if (folder_browser->sensitise_state) {
        g_hash_table_destroy (folder_browser->sensitise_state);
        folder_browser->sensitise_state = NULL;
    }
    
    G_OBJECT_CLASS (parent_class)->finalize (object);
}

static void
folder_browser_destroy (GtkObject *object)
{
    FolderBrowser *folder_browser;
    CORBA_Environment ev;
    GConfClient *gconf;
    
    folder_browser = FOLDER_BROWSER (object);
    
    gconf = gconf_client_get_default ();
    
    CORBA_exception_init (&ev);
    
    if (folder_browser->seen_id != 0) {
        gtk_timeout_remove (folder_browser->seen_id);
        folder_browser->seen_id = 0;
    }
    
    if (folder_browser->loading_id != 0) {
        gtk_timeout_remove(folder_browser->loading_id);
        folder_browser->loading_id = 0;
    }
    
    if (folder_browser->message_list) {
        gtk_widget_destroy (GTK_WIDGET (folder_browser->message_list));
        folder_browser->message_list = NULL;
    }
    
    if (folder_browser->mail_display) {
        gtk_widget_destroy (GTK_WIDGET (folder_browser->mail_display));
        folder_browser->mail_display = NULL;
    }

    if (folder_browser->view_instance) {
        g_object_unref (folder_browser->view_instance);
        folder_browser->view_instance = NULL;
    }
    
    if (folder_browser->view_menus) {
        g_object_unref (folder_browser->view_menus);
        folder_browser->view_menus = NULL;
    }
    
    /* wait for all outstanding async events against us */
    mail_async_event_destroy (folder_browser->async_event);

    if (folder_browser->search_full) {
        g_object_unref (folder_browser->search_full);
        folder_browser->search_full = NULL;
    }
    
    if (folder_browser->sensitize_timeout_id) {
        g_source_remove (folder_browser->sensitize_timeout_id);
        folder_browser->sensitize_timeout_id = 0;
    }
    
    if (folder_browser->shell != CORBA_OBJECT_NIL) {
        CORBA_Object_release (folder_browser->shell, &ev);
        folder_browser->shell = CORBA_OBJECT_NIL;
    }
    
    if (folder_browser->shell_view != CORBA_OBJECT_NIL) {
        CORBA_Object_release (folder_browser->shell_view, &ev);
        folder_browser->shell_view = CORBA_OBJECT_NIL;
    }
    
    if (folder_browser->uicomp) {
        bonobo_object_unref (BONOBO_OBJECT (folder_browser->uicomp));
        folder_browser->uicomp = NULL;
    }
    
    if (folder_browser->invisible) {
        g_object_unref (folder_browser->invisible);
        folder_browser->invisible = NULL;
    }
        
    if (folder_browser->get_id != -1) {
        mail_msg_cancel (folder_browser->get_id);
        folder_browser->get_id = -1;
    }
    
    if (folder_browser->folder) {
        camel_object_unhook_event (CAMEL_OBJECT (folder_browser->folder), "folder_changed",
                       folder_changed, folder_browser);
        camel_object_unhook_event (CAMEL_OBJECT (folder_browser->folder), "message_changed",
                       folder_changed, folder_browser);
        mail_sync_folder (folder_browser->folder, NULL, NULL);
        camel_object_unref (folder_browser->folder);
        folder_browser->folder = NULL;
    }

    CORBA_exception_free (&ev);
    
    GTK_OBJECT_CLASS (parent_class)->destroy (object);
}

static void
folder_browser_class_init (FolderBrowserClass *klass)
{
    GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
    GtkObjectClass *object_class = GTK_OBJECT_CLASS (klass);
    
    parent_class = g_type_class_ref(PARENT_TYPE);
    
    object_class->destroy = folder_browser_destroy;
    gobject_class->finalize = folder_browser_finalise;
    
    folder_browser_signals[FOLDER_LOADED] =
        g_signal_new ("folder_loaded",
                  FOLDER_BROWSER_TYPE,
                  G_SIGNAL_RUN_LAST,
                  G_STRUCT_OFFSET (FolderBrowserClass, folder_loaded),
                  NULL,
                  NULL,
                  g_cclosure_marshal_VOID__STRING,
                  G_TYPE_NONE, 1, G_TYPE_STRING);
    
    folder_browser_signals[MESSAGE_LOADED] =
        g_signal_new ("message_loaded",
                  FOLDER_BROWSER_TYPE,
                  G_SIGNAL_RUN_LAST,
                  G_STRUCT_OFFSET (FolderBrowserClass, message_loaded),
                  NULL,
                  NULL,
                  g_cclosure_marshal_VOID__STRING,
                  G_TYPE_NONE, 1, G_TYPE_STRING);
    
    /* clipboard atom */
    if (!clipboard_atom)
        clipboard_atom = gdk_atom_intern ("CLIPBOARD", FALSE);
    
    if (!paste_types[0].target)
        paste_types[0].target = gdk_atom_intern (X_EVOLUTION_MESSAGE_TYPE, FALSE);
}

static void
add_uid (MessageList *ml, const char *uid, gpointer data)
{
    g_ptr_array_add ((GPtrArray *) data, g_strdup (uid));
}

static void
message_list_drag_data_get (ETree *tree, int row, ETreePath path, int col,
                GdkDragContext *context, GtkSelectionData *selection_data,
                guint info, guint time, gpointer user_data)
{
    FolderBrowser *fb = FOLDER_BROWSER (user_data);
    GPtrArray *uids = NULL;
    int i;
    
    uids = g_ptr_array_new ();
    message_list_foreach (fb->message_list, add_uid, uids);
    if (uids->len == 0) {
        g_ptr_array_free (uids, TRUE);
        return;
    }
    
    switch (info) {
    case DND_TARGET_TYPE_TEXT_URI_LIST:
    {
        const char *filename, *tmpdir;
        CamelMimeMessage *message;
        CamelStream *stream;
        char *uri_list;
        int fd;
        
        tmpdir = e_mkdtemp ("drag-n-drop-XXXXXX");
        
        if (!tmpdir) {
            char *msg = g_strdup_printf (_("Could not create temporary "
                               "directory: %s"),
                             g_strerror (errno));
            gnome_error_dialog (msg);
            /* cleanup and abort */
            for (i = 0; i < uids->len; i++)
                g_free (uids->pdata[i]);
            g_ptr_array_free (uids, TRUE);
            g_free (msg);
            return;
        }
        
        message = camel_folder_get_message (fb->folder, uids->pdata[0], NULL);
        g_free (uids->pdata[0]);
        
        if (uids->len == 1) {
            filename = camel_mime_message_get_subject (message);
            if (!filename)
                filename = _("Unknown");
        } else
            filename = "mbox";
        
        uri_list = g_strdup_printf ("file://%s/%s", tmpdir, filename);
        
        fd = open (uri_list + 7, O_WRONLY | O_CREAT | O_EXCL, 0600);
        if (fd == -1) {
            /* cleanup and abort */
            camel_object_unref (CAMEL_OBJECT (message));
            for (i = 1; i < uids->len; i++)
                g_free (uids->pdata[i]);
            g_ptr_array_free (uids, TRUE);
            g_free (uri_list);
            return;
        }
        
        stream = camel_stream_fs_new_with_fd (fd);
        
        camel_stream_write (stream, "From - \n", 8);
        camel_data_wrapper_write_to_stream (CAMEL_DATA_WRAPPER (message), stream);
        camel_object_unref (CAMEL_OBJECT (message));
        for (i = 1; i < uids->len; i++) {
            message = camel_folder_get_message (fb->folder, uids->pdata[i], NULL);
            camel_stream_write (stream, "From - \n", 8);
            camel_data_wrapper_write_to_stream (CAMEL_DATA_WRAPPER (message), stream);
            camel_object_unref (CAMEL_OBJECT (message));
            g_free (uids->pdata[i]);
        }
        
        camel_object_unref (CAMEL_OBJECT (stream));
        
        gtk_selection_data_set (selection_data, selection_data->target, 8,
                    uri_list, strlen (uri_list));
        g_free (uri_list);
    }
    break;
    case DND_TARGET_TYPE_MESSAGE_RFC822:
    {
        /* FIXME: this'll be fucking slow for the user... pthread this? */
        CamelStream *stream;
        GByteArray *bytes;
        
        bytes = g_byte_array_new ();
        stream = camel_stream_mem_new ();
        camel_stream_mem_set_byte_array (CAMEL_STREAM_MEM (stream), bytes);
        
        for (i = 0; i < uids->len; i++) {
            CamelMimeMessage *message;
            
            message = camel_folder_get_message (fb->folder, uids->pdata[i], NULL);
            g_free (uids->pdata[i]);
            
            if (message) {          
                camel_stream_write (stream, "From - \n", 8);
                camel_data_wrapper_write_to_stream (CAMEL_DATA_WRAPPER (message), stream);
                camel_object_unref (CAMEL_OBJECT (message));
            }
        }
        
        g_ptr_array_free (uids, TRUE);
        camel_object_unref (CAMEL_OBJECT (stream));
        
        gtk_selection_data_set (selection_data, selection_data->target, 8,
                    bytes->data, bytes->len);
        
        g_byte_array_free (bytes, TRUE);
    }
    break;
    case DND_TARGET_TYPE_X_EVOLUTION_MESSAGE:
    {
        GByteArray *array;
        
        /* format: "uri\0uid1\0uid2\0uid3\0...\0uidn" */
        
        /* write the uri portion */
        array = g_byte_array_new ();
        g_byte_array_append (array, fb->uri, strlen (fb->uri));
        g_byte_array_append (array, "", 1);
        
        /* write the uids */
        for (i = 0; i < uids->len; i++) {
            g_byte_array_append (array, uids->pdata[i], strlen (uids->pdata[i]));
            g_free (uids->pdata[i]);
            
            if (i + 1 < uids->len)
                g_byte_array_append (array, "", 1);
        }
        
        g_ptr_array_free (uids, TRUE);
        
        gtk_selection_data_set (selection_data, selection_data->target, 8,
                    array->data, array->len);
        
        g_byte_array_free (array, TRUE);
    }
    break;
    default:
        for (i = 0; i < uids->len; i++)
            g_free (uids->pdata[i]);
        
        g_ptr_array_free (uids, TRUE);
        break;
    }
}

static void
message_rfc822_dnd (CamelFolder *dest, CamelStream *stream, CamelException *ex)
{
    CamelMimeParser *mp;
    
    mp = camel_mime_parser_new ();
    camel_mime_parser_scan_from (mp, TRUE);
    camel_mime_parser_init_with_stream (mp, stream);
    
    while (camel_mime_parser_step (mp, 0, 0) == HSCAN_FROM) {
        CamelMessageInfo *info;
        CamelMimeMessage *msg;
        
        msg = camel_mime_message_new ();
        if (camel_mime_part_construct_from_parser (CAMEL_MIME_PART (msg), mp) == -1) {
            camel_object_unref (CAMEL_OBJECT (msg));
            break;
        }
        
        /* append the message to the folder... */
        info = g_new0 (CamelMessageInfo, 1);
        camel_folder_append_message (dest, msg, info, NULL, ex);
        camel_object_unref (CAMEL_OBJECT (msg));
        
        if (camel_exception_is_set (ex))
            break;
        
        /* skip over the FROM_END state */
        camel_mime_parser_step (mp, 0, 0);
    }
    
    camel_object_unref (CAMEL_OBJECT (mp));
}

static void
message_list_drag_data_received (ETree *tree, int row, ETreePath path, int col,
                 GdkDragContext *context, gint x, gint y,
                 GtkSelectionData *selection_data, guint info,
                 guint time, gpointer user_data)
{
    FolderBrowser *fb = FOLDER_BROWSER (user_data);
    CamelFolder *folder = NULL;
    char *tmp, *url, **urls;
    GPtrArray *uids = NULL;
    CamelStream *stream;
    CamelException ex;
    CamelURL *uri;
    int i, fd;
    
    /* this means we are receiving no data */
    if (!selection_data->data || selection_data->length == -1)
        return;
    
    camel_exception_init (&ex);
    
    switch (info) {
    case DND_TARGET_TYPE_TEXT_URI_LIST:
        tmp = g_strndup (selection_data->data, selection_data->length);
        urls = g_strsplit (tmp, "\n", 0);
        g_free (tmp);
        
        for (i = 0; urls[i] != NULL; i++) {
            /* get the path component */
            url = g_strstrip (urls[i]);
            
            uri = camel_url_new (url, NULL);
            g_free (url);
            url = uri->path;
            uri->path = NULL;
            camel_url_free (uri);
            
            fd = open (url, O_RDONLY);
            if (fd == -1) {
                g_free (url);
                /* FIXME: okay, what do we do in this case? */
                continue;
            }
            
            stream = camel_stream_fs_new_with_fd (fd);
            message_rfc822_dnd (fb->folder, stream, &ex);
            camel_object_unref (CAMEL_OBJECT (stream));
            
            if (context->action == GDK_ACTION_MOVE && !camel_exception_is_set (&ex))
                unlink (url);
            
            g_free (url);
        }
        
        g_free (urls);
        break;
    case DND_TARGET_TYPE_MESSAGE_RFC822:
        /* write the message(s) out to a CamelStream so we can use it */
        stream = camel_stream_mem_new ();
        camel_stream_write (stream, selection_data->data, selection_data->length);
        camel_stream_reset (stream);
        
        message_rfc822_dnd (fb->folder, stream, &ex);
        camel_object_unref (CAMEL_OBJECT (stream));
        break;
    case DND_TARGET_TYPE_X_EVOLUTION_MESSAGE:
        folder = mail_tools_x_evolution_message_parse (selection_data->data, selection_data->length, &uids);
        if (folder == NULL)
            goto fail;
        
        if (uids == NULL) {
            camel_object_unref (CAMEL_OBJECT (folder));
            goto fail;
        }
        
        mail_transfer_messages (folder, uids, context->action == GDK_ACTION_MOVE,
                    fb->uri, 0, NULL, NULL);
        
        camel_object_unref (CAMEL_OBJECT (folder));
        break;
    }
    
    camel_exception_clear (&ex);
    
    gtk_drag_finish (context, TRUE, TRUE, GDK_CURRENT_TIME);
    
 fail:
    camel_exception_clear (&ex);
    
    gtk_drag_finish (context, FALSE, TRUE, GDK_CURRENT_TIME);
}

static void
selection_get (GtkWidget *widget, GtkSelectionData *selection_data,
           guint info, guint time_stamp, FolderBrowser *fb)
{
    if (fb->clipboard_selection == NULL)
        return;
    
    switch (info) {
    default:
    case PASTE_TARGET_TYPE_TEXT_PLAIN:
    {
        /* FIXME: this'll be fucking slow for the user... pthread this? */
        CamelFolder *source;
        CamelStream *stream;
        GByteArray *bytes;
        GPtrArray *uids;
        int i;
        
        bytes = fb->clipboard_selection;
        
        /* Note: source should == fb->folder, but we might as well use `source' instead of fb->folder */
        source = mail_tools_x_evolution_message_parse (bytes->data, bytes->len, &uids);
        if (source == NULL)
            return;
        
        if (uids == NULL) {
            camel_object_unref (CAMEL_OBJECT (source));
            return;
        }
        
        bytes = g_byte_array_new ();
        stream = camel_stream_mem_new ();
        camel_stream_mem_set_byte_array (CAMEL_STREAM_MEM (stream), bytes);
        
        for (i = 0; i < uids->len; i++) {
            CamelMimeMessage *message;
            
            message = camel_folder_get_message (source, uids->pdata[i], NULL);
            g_free (uids->pdata[i]);
            
            if (message) {          
                camel_stream_write (stream, "From - \n", 8);
                camel_data_wrapper_write_to_stream (CAMEL_DATA_WRAPPER (message), stream);
                camel_object_unref (CAMEL_OBJECT (message));
            }
        }
        
        g_ptr_array_free (uids, TRUE);
        camel_object_unref (CAMEL_OBJECT (stream));
        camel_object_unref (CAMEL_OBJECT (source));
        
        gtk_selection_data_set (selection_data, selection_data->target, 8,
                    bytes->data, bytes->len);
        
        g_byte_array_free (bytes, FALSE);
    }
    break;
    case PASTE_TARGET_TYPE_X_EVOLUTION_MESSAGE:
        /* we already have our data in the correct form */
        gtk_selection_data_set (selection_data,
                    selection_data->target, 8,
                    fb->clipboard_selection->data,
                    fb->clipboard_selection->len);
        break;
    }
}

static void
selection_clear_event (GtkWidget *widget, GdkEventSelection *event, FolderBrowser *fb)
{
    if (fb->clipboard_selection != NULL) {
        g_byte_array_free (fb->clipboard_selection, TRUE);
        fb->clipboard_selection = NULL;
    }
}

static void
selection_received (GtkWidget *widget, GtkSelectionData *selection_data,
            guint time, FolderBrowser *fb)
{
    CamelFolder *source = NULL;
    GPtrArray *uids = NULL;
    
    if (selection_data == NULL || selection_data->length == -1)
        return;
    
    source = mail_tools_x_evolution_message_parse (selection_data->data, selection_data->length, &uids);
    if (source == NULL)
        return;
    
    if (uids == NULL) {
        camel_object_unref (CAMEL_OBJECT (source));
        return;
    }
    
    mail_transfer_messages (source, uids, FALSE, fb->uri, 0, NULL, NULL);
    
    camel_object_unref (CAMEL_OBJECT (source));
}

void
folder_browser_copy (GtkWidget *menuitem, FolderBrowser *fb)
{
    GPtrArray *uids = NULL;
    GByteArray *bytes;
    gboolean cut;
    int i;
    
    if (fb->message_list == NULL)
        return;
    
    cut = menuitem == NULL;
    
    if (GTK_WIDGET_HAS_FOCUS (fb->mail_display->html)) {
        gtk_html_copy (fb->mail_display->html);
        return;
    }
    
    if (fb->clipboard_selection) {
        g_byte_array_free (fb->clipboard_selection, TRUE);
        fb->clipboard_selection = NULL;
    }
    
    uids = g_ptr_array_new ();
    message_list_foreach (fb->message_list, add_uid, uids);
    
    /* format: "uri\0uid1\0uid2\0uid3\0...\0uidn" */
    
    /* write the uri portion */
    bytes = g_byte_array_new ();
    g_byte_array_append (bytes, fb->uri, strlen (fb->uri));
    g_byte_array_append (bytes, "", 1);
    
    /* write the uids */
    camel_folder_freeze (fb->folder);
    for (i = 0; i < uids->len; i++) {
        if (cut) {
            camel_folder_set_message_flags (fb->folder, uids->pdata[i],
                            CAMEL_MESSAGE_SEEN | CAMEL_MESSAGE_DELETED,
                            CAMEL_MESSAGE_SEEN | CAMEL_MESSAGE_DELETED);
        }
        g_byte_array_append (bytes, uids->pdata[i], strlen (uids->pdata[i]));
        g_free (uids->pdata[i]);
        
        if (i + 1 < uids->len)
            g_byte_array_append (bytes, "", 1);
    }
    camel_folder_thaw (fb->folder);
    
    g_ptr_array_free (uids, TRUE);
    
    fb->clipboard_selection = bytes;
    
    gtk_selection_owner_set (fb->invisible, clipboard_atom, GDK_CURRENT_TIME);
}

void
folder_browser_cut (GtkWidget *menuitem, FolderBrowser *fb)
{
    folder_browser_copy (NULL, fb);
}

void
folder_browser_paste (GtkWidget *menuitem, FolderBrowser *fb)
{
    gtk_selection_convert (fb->invisible, clipboard_atom,
                   paste_types[0].target,
                   GDK_CURRENT_TIME);
}

/* all this crap so we can give the user a whoopee doo status bar */
static void
update_status_bar (FolderBrowser *fb)
{
    extern CamelFolder *outbox_folder, *sent_folder;
    CORBA_Environment ev;
    int tmp, total;
    GString *work;
    
    if (fb->folder == NULL
        || fb->message_list == NULL
        || fb->shell_view == CORBA_OBJECT_NIL)
        return;
    
    if (!fb->message_list->hidedeleted || !camel_folder_has_summary_capability (fb->folder)) {
        total = camel_folder_get_message_count (fb->folder);
    } else {
        GPtrArray *sum = camel_folder_get_summary (fb->folder);
        int i;
        
        if (sum) {
            total = 0;
            for (i = 0; i < sum->len; i++) {
                CamelMessageInfo *info = sum->pdata[i];
                
                if ((info->flags & CAMEL_MESSAGE_DELETED) == 0)
                    total++;
            }
            camel_folder_free_summary (fb->folder, sum);
        } else {
            total = camel_folder_get_message_count (fb->folder);
        }
    }
    
    work = g_string_new ("");
    g_string_append_printf (work, _("%d new"), camel_folder_get_unread_message_count (fb->folder));
    tmp = message_list_hidden (fb->message_list);
    if (0 < tmp && tmp < total) {
        g_string_append (work, _(", "));
        if (tmp < total / 2)
            g_string_append_printf (work, _("%d hidden"), tmp);
        else  
            g_string_append_printf (work, _("%d visible"), total - tmp);
    }
    tmp = e_selection_model_selected_count (e_tree_get_selection_model (fb->message_list->tree));
    if (tmp) {
        g_string_append (work, _(", "));
        g_string_append_printf (work, _("%d selected"), tmp);
    }
    g_string_append (work, _(", "));
    
    if (fb->folder == outbox_folder)
        g_string_append_printf (work, _("%d unsent"), total);
    else if (fb->folder == sent_folder)
        g_string_append_printf (work, _("%d sent"), total);
    else
        g_string_append_printf (work, _("%d total"), total);
    
    CORBA_exception_init (&ev);
    GNOME_Evolution_ShellView_setFolderBarLabel (fb->shell_view, work->str, &ev);
    CORBA_exception_free (&ev);
    
    if (fb->update_status_bar_idle_id != 0) {
        g_source_remove (fb->update_status_bar_idle_id);
        fb->update_status_bar_idle_id = 0;
    }
    
    g_string_free (work, TRUE);
}

static gboolean
update_status_bar_idle_cb(gpointer data)
{
    FolderBrowser *fb = data;

#if 0   
    if (!GTK_OBJECT_DESTROYED (fb))
#endif
        update_status_bar (fb);
    
    fb->update_status_bar_idle_id = 0;
    g_object_unref (fb);
    
    return FALSE;
}

static void
update_status_bar_idle(FolderBrowser *fb)
{
    if (fb->update_status_bar_idle_id == 0) {
        g_object_ref (fb);
        fb->update_status_bar_idle_id = g_idle_add (update_status_bar_idle_cb, fb);
    }
}

static void main_folder_changed(CamelObject *o, void *event_data, void *data)
{
    FolderBrowser *fb = data;
    
    if (fb->message_list == NULL)
        return;
    
    /* so some corba unref doesnt blow us away while we're busy */
    g_object_ref (fb);
    update_status_bar (fb);
    folder_browser_ui_scan_selection (fb);
    g_object_unref (fb);
}

static void folder_changed (CamelObject *obj, void *event_data, void *user_data)
{
    FolderBrowser *fb = user_data;

    mail_async_event_emit (fb->async_event, MAIL_ASYNC_GUI,
                   (MailAsyncFunc) main_folder_changed,
                   obj, NULL, user_data);
}

static void
got_folder (char *uri, CamelFolder *folder, void *user_data)
{
    FolderBrowser *fb = user_data;
    
    fb->get_id = -1;
    
    d(printf ("got folder '%s' = %p, previous folder was %p\n", uri, folder, fb->folder));
    
    if (fb->message_list == NULL)
        goto done;

    if (fb->folder) {
        camel_object_unhook_event (fb->folder, "folder_changed", folder_changed, fb);
        camel_object_unhook_event (fb->folder, "message_changed", folder_changed, fb);
        camel_object_unref (fb->folder);
    }
    
    fb->folder = folder;
    if (folder == NULL)
        goto done;
    
    camel_object_ref (folder);
    
    gtk_widget_set_sensitive (GTK_WIDGET (fb->search), camel_folder_has_search_capability (folder));
    message_list_set_folder (fb->message_list, folder,
                 folder_browser_is_drafts (fb) ||
                 folder_browser_is_sent (fb) ||
                 folder_browser_is_outbox (fb));
    
    camel_object_hook_event (CAMEL_OBJECT (fb->folder), "folder_changed",
                 folder_changed, fb);
    camel_object_hook_event (CAMEL_OBJECT (fb->folder), "message_changed",
                 folder_changed, fb);
    
    if (fb->view_instance != NULL && fb->view_menus != NULL)
        folder_browser_ui_discard_view_menus (fb);
    
    folder_browser_ui_setup_view_menus (fb);
    
    /* when loading a new folder, nothing is selected initially */
    
    if (fb->uicomp)
        folder_browser_ui_set_selection_state (fb, FB_SELSTATE_NONE);
    
 done:  
    g_signal_emit (fb, folder_browser_signals[FOLDER_LOADED], 0, fb->uri);
    g_object_unref (fb);
}


void
folder_browser_reload (FolderBrowser *fb)
{
    g_return_if_fail (IS_FOLDER_BROWSER (fb));
    
    if (fb->folder) {
        mail_refresh_folder (fb->folder, NULL, NULL);
    } else if (fb->uri) {
        g_object_ref (fb);
        fb->get_id = mail_get_folder (fb->uri, 0, got_folder, fb, mail_thread_new);
    }
}

void
folder_browser_set_folder (FolderBrowser *fb, CamelFolder *folder, const char *uri)
{
    g_return_if_fail (IS_FOLDER_BROWSER (fb));
    g_return_if_fail (CAMEL_IS_FOLDER (folder));
    
    if (fb->get_id != -1) {
        /* FIXME: cancel the get_folder request? */
    }
    
    g_free (fb->uri);
    fb->uri = g_strdup (uri);
    
    g_object_ref (fb);
    got_folder (NULL, folder, fb);
}

void
folder_browser_set_ui_component (FolderBrowser *fb, BonoboUIComponent *uicomp)
{
    g_return_if_fail (IS_FOLDER_BROWSER (fb));
    
    if (fb->sensitize_timeout_id) {
        g_source_remove (fb->sensitize_timeout_id);
        fb->sensitize_timeout_id = 0;
    }
    
    if (fb->sensitise_state) {
        g_hash_table_destroy (fb->sensitise_state);
        fb->sensitise_state = NULL;
    }
    
    if (fb->uicomp)
        bonobo_object_unref (BONOBO_OBJECT (fb->uicomp));
    
    if (uicomp)
        bonobo_object_ref (BONOBO_OBJECT (uicomp));
    
    fb->uicomp = uicomp;
}

void
folder_browser_set_shell_view(FolderBrowser *fb, GNOME_Evolution_ShellView shell_view)
{
    CORBA_Environment ev;
    
    CORBA_exception_init(&ev);
    if (fb->shell_view != CORBA_OBJECT_NIL)
        CORBA_Object_release (fb->shell_view, &ev);
    CORBA_exception_free (&ev);
    
    fb->shell_view = CORBA_Object_duplicate (shell_view, &ev);
    CORBA_exception_free (&ev);
    
    /* small hack, at this point we've just been activated */
    if (fb->shell_view != CORBA_OBJECT_NIL)
        update_status_bar (fb);
}

extern CamelFolder *drafts_folder, *sent_folder, *outbox_folder;

/**
 * folder_browser_is_drafts:
 * @fb: a FolderBrowser
 *
 * Return value: %TRUE if @fb refers to /local/Drafts or any other
 * configured Drafts folder.
 **/
gboolean
folder_browser_is_drafts (FolderBrowser *fb)
{
    gboolean is_drafts = FALSE;
    EAccountList *accounts;
    EAccount *account;
    EIterator *iter;
    
    g_return_val_if_fail (IS_FOLDER_BROWSER (fb), FALSE);
    
    if (fb->uri == NULL || fb->folder == NULL)
        return FALSE;
    
    if (fb->folder == drafts_folder)
        return TRUE;
    
    accounts = mail_config_get_accounts ();
    iter = e_list_get_iterator ((EList *) accounts);
    while (e_iterator_is_valid (iter)) {
        account = (EAccount *) e_iterator_get (iter);
        if (account->drafts_folder_uri &&
            camel_store_uri_cmp (fb->folder->parent_store, account->drafts_folder_uri, fb->uri)) {
            is_drafts = TRUE;
            break;
        }
        
        e_iterator_next (iter);
    }
    
    g_object_unref (iter);
    
    return is_drafts;
}

/**
 * folder_browser_is_sent:
 * @fb: a FolderBrowser
 *
 * Return value: %TRUE if @fb refers to /local/Sent or any other
 * configured Sent folder.
 **/
gboolean
folder_browser_is_sent (FolderBrowser *fb)
{
    gboolean is_sent = FALSE;
    EAccountList *accounts;
    EAccount *account;
    EIterator *iter;
    
    g_return_val_if_fail (IS_FOLDER_BROWSER (fb), FALSE);
    
    if (fb->uri == NULL || fb->folder == NULL)
        return FALSE;
    
    if (fb->folder == sent_folder)
        return TRUE;
    
    accounts = mail_config_get_accounts ();
    iter = e_list_get_iterator ((EList *) accounts);
    while (e_iterator_is_valid (iter)) {
        account = (EAccount *) e_iterator_get (iter);
        if (account->sent_folder_uri &&
            camel_store_uri_cmp (fb->folder->parent_store, account->sent_folder_uri, fb->uri)) {
            is_sent = TRUE;
            break;
        }
        
        e_iterator_next (iter);
    }
    
    g_object_unref (iter);
    
    return is_sent;
}

/**
 * folder_browser_is_outbox:
 * @fb: a FolderBrowser
 *
 * Return value: %TRUE if @fb refers to /local/Outbox or any other
 * configured Outbox folder.
 **/
gboolean
folder_browser_is_outbox (FolderBrowser *fb)
{
    /* There can be only one. */
    return fb->folder == outbox_folder;
}

static int
save_cursor_pos (FolderBrowser *fb)
{
    ETreePath node;
    GtkAdjustment *adj;
    int row, y, height, paned_size;
    GConfClient *gconf;
    
    node = e_tree_get_cursor (fb->message_list->tree);
    if (!node)
        return -1;
    
    row = e_tree_row_of_node (fb->message_list->tree, node);
    
    if (row == -1)
        return 0;
    
    e_tree_get_cell_geometry (fb->message_list->tree, row, 0,
                  NULL, &y, NULL, &height);
    
    gconf = gconf_client_get_default ();
    paned_size = gconf_client_get_int (gconf, "/apps/evolution/mail/display/paned_size", NULL);
    
    adj = gtk_scrolled_window_get_vadjustment (GTK_SCROLLED_WINDOW (fb->message_list));
    y += adj->value - ((paned_size - height) / 2);
    
    return y;
}

static void
set_cursor_pos (FolderBrowser *fb, int y)
{
    GtkAdjustment *adj;
    
    if (y == -1)
        return;
    
    adj = gtk_scrolled_window_get_vadjustment (GTK_SCROLLED_WINDOW (fb->message_list));
    gtk_adjustment_set_value (adj, (gfloat)y);
}

static gboolean do_message_selected(FolderBrowser *fb);

void
folder_browser_set_message_preview (FolderBrowser *folder_browser, gboolean show_preview)
{
    GConfClient *gconf;
    int paned_size, y;
    
    if (folder_browser->preview_shown == show_preview
        || folder_browser->message_list == NULL)
        return;
    
    folder_browser->preview_shown = show_preview;
    
    gconf = gconf_client_get_default ();
    paned_size = gconf_client_get_int (gconf, "/apps/evolution/mail/display/paned_size", NULL);
    
    if (show_preview) {
        y = save_cursor_pos (folder_browser);
        gtk_paned_set_position (GTK_PANED (folder_browser->vpaned), paned_size);
        gtk_widget_show (GTK_WIDGET (folder_browser->mail_display));
        do_message_selected (folder_browser);
        set_cursor_pos (folder_browser, y);
    } else {
        gtk_widget_hide (GTK_WIDGET (folder_browser->mail_display));
        mail_display_set_message (folder_browser->mail_display, NULL, NULL, NULL);
        folder_browser_ui_message_loaded (folder_browser);
    }
}

enum {
    ESB_SAVE,
};

static ESearchBarItem folder_browser_search_menu_items[] = {
    E_FILTERBAR_ADVANCED,
    { NULL, 0, NULL },
    E_FILTERBAR_SAVE,
    E_FILTERBAR_EDIT,
    { NULL, 0, NULL },
    { N_("Create _Virtual Folder From Search..."), ESB_SAVE, NULL  },
    { NULL, -1, NULL }
};

static void
folder_browser_search_menu_activated (ESearchBar *esb, int id, FolderBrowser *fb)
{
    EFilterBar *efb = (EFilterBar *)esb;
    
    d(printf("menu activated\n"));
    
    switch (id) {
    case ESB_SAVE:
        d(printf("Save vfolder\n"));
        if (efb->current_query) {
            FilterRule *rule = vfolder_clone_rule(efb->current_query);          
            char *name, *text;
            
            text = e_search_bar_get_text(esb);
            name = g_strdup_printf("%s %s", rule->name, (text&&text[0])?text:"''");
            g_free (text);
            filter_rule_set_name(rule, name);
            g_free (name);
            
            filter_rule_set_source(rule, FILTER_SOURCE_INCOMING);
            vfolder_rule_add_source((VfolderRule *)rule, fb->uri);
            vfolder_gui_add_rule((VfolderRule *)rule);
        }
        break;
    }
}

static void
folder_browser_config_search (EFilterBar *efb, FilterRule *rule, int id, const char *query, void *data)
{
    FolderBrowser *fb = FOLDER_BROWSER (data);
    ESearchingTokenizer *st;
    GList *partl;
    struct _camel_search_words *words;
    int i;
    
    st = E_SEARCHING_TOKENIZER (fb->mail_display->html->engine->ht); 
    
    e_searching_tokenizer_set_secondary_search_string (st, NULL);
    
    /* we scan the parts of a rule, and set all the types we know about to the query string */
    partl = rule->parts;
    while (partl) {
        FilterPart *part = partl->data;
        
        if (!strcmp(part->name, "subject")) {
            FilterInput *input = (FilterInput *)filter_part_find_element(part, "subject");
            if (input)
                filter_input_set_value(input, query);
        } else if (!strcmp(part->name, "body")) {
            FilterInput *input = (FilterInput *)filter_part_find_element(part, "word");
            if (input)
                filter_input_set_value(input, query);
            
            words = camel_search_words_split(query);
            for (i=0;i<words->len;i++)
                e_searching_tokenizer_add_secondary_search_string (st, words->words[i]->word);
            camel_search_words_free (words);
        } else if(!strcmp(part->name, "sender")) {
            FilterInput *input = (FilterInput *)filter_part_find_element(part, "sender");
            if (input)
                filter_input_set_value(input, query);
        } else if(!strcmp(part->name, "to")) {
            FilterInput *input = (FilterInput *)filter_part_find_element(part, "recipient");
            if (input)
                filter_input_set_value(input, query);
        }
        
        partl = partl->next;
    }
    
    d(printf("configuring search for search string '%s', rule is '%s'\n", query, rule->name));
    
    mail_display_redisplay (fb->mail_display, FALSE);
}

static void
folder_browser_search_do_search (ESearchBar *esb, FolderBrowser *fb)
{
    char *search_word;
    
    if (fb->message_list == NULL)
        return;
    
    d(printf("do search\n"));
    
    g_object_get (esb, "query", &search_word, NULL);
    
    message_list_set_search (fb->message_list, search_word);
    
    d(printf("query is %s\n", search_word));
    g_free (search_word);
}

static void
folder_browser_query_changed (ESearchBar *esb, FolderBrowser *fb)
{
    int id;
    
    id = e_search_bar_get_item_id (esb);
    if (id == E_FILTERBAR_ADVANCED_ID)
        folder_browser_search_do_search (esb, fb);
}

void
folder_browser_toggle_preview (BonoboUIComponent           *component,
                   const char                  *path,
                   Bonobo_UIComponent_EventType type,
                   const char                  *state,
                   gpointer                     user_data)
{
    FolderBrowser *fb = user_data;
    GConfClient *gconf;
    
    if (type != Bonobo_UIComponent_STATE_CHANGED || fb->message_list == NULL)
        return;
    
    gconf = gconf_client_get_default ();
    gconf_client_set_bool (gconf, "/apps/evolution/mail/display/show_preview", atoi (state), NULL);
    folder_browser_set_message_preview (fb, atoi (state));
}

void
folder_browser_toggle_threads (BonoboUIComponent           *component,
                   const char                  *path,
                   Bonobo_UIComponent_EventType type,
                   const char                  *state,
                   gpointer                     user_data)
{
    FolderBrowser *fb = user_data;
    GConfClient *gconf;
    int prev_state;
    
    if (type != Bonobo_UIComponent_STATE_CHANGED || fb->message_list == NULL)
        return;
    
    gconf = gconf_client_get_default ();
    gconf_client_set_bool (gconf, "/apps/evolution/mail/display/thread_list",
                   atoi (state), NULL);
    
    message_list_set_threaded (fb->message_list, atoi (state));
    
    prev_state = fb->selection_state;
    fb->selection_state = FB_SELSTATE_UNDEFINED;
    folder_browser_ui_set_selection_state (fb, prev_state);
}

void
folder_browser_toggle_hide_deleted (BonoboUIComponent           *component,
                    const char                  *path,
                    Bonobo_UIComponent_EventType type,
                    const char                  *state,
                    gpointer                     user_data)
{
    FolderBrowser *fb = user_data;
    GConfClient *gconf;
    
    if (type != Bonobo_UIComponent_STATE_CHANGED || fb->message_list == NULL)
        return;
    
    gconf = gconf_client_get_default ();
    gconf_client_set_bool (gconf, "/apps/evolution/mail/display/show_deleted",
                   !atoi (state), NULL);
    
    if (!(fb->folder && (fb->folder->folder_flags & CAMEL_FOLDER_IS_TRASH)))
        message_list_set_hidedeleted (fb->message_list, atoi (state));
}

void
folder_browser_set_message_display_style (BonoboUIComponent           *component,
                      const char                  *path,
                      Bonobo_UIComponent_EventType type,
                      const char                  *state,
                      gpointer                     user_data)
{
    extern char *message_display_styles[];
    FolderBrowser *fb = user_data;
    GConfClient *gconf;
    int i;
    
    if (type != Bonobo_UIComponent_STATE_CHANGED
        || atoi (state) == 0
        || fb->message_list == NULL)
        return;
    
    gconf = gconf_client_get_default ();
    
    printf ("message display style: %s\n", path);
    
    for (i = 0; i < MAIL_CONFIG_DISPLAY_MAX; i++) {
        if (strstr (message_display_styles[i], path)) {
            fb->mail_display->display_style = i;
            mail_display_redisplay (fb->mail_display, TRUE);
            
            if (fb->pref_master)
                gconf_client_set_int (gconf, "/apps/evolution/mail/display/message_style", i, NULL);
            return;
        }
    }
}

void
folder_browser_charset_changed (BonoboUIComponent           *component,
                const char                  *path,
                Bonobo_UIComponent_EventType type,
                const char                  *state,
                gpointer                     user_data)
{
    FolderBrowser *fb = FOLDER_BROWSER (user_data);
    const char *charset;
    
    if (type != Bonobo_UIComponent_STATE_CHANGED
        || fb->message_list == NULL)
        return;
    
    if (atoi (state)) {
        /* Charset menu names are "Charset-%s" where %s is the charset name */
        charset = path + strlen ("Charset-");
        if (!strcmp (charset, FB_DEFAULT_CHARSET))
            charset = NULL;
        
        mail_display_set_charset (fb->mail_display, charset);
    }
}

static void vfolder_type_uid(CamelFolder *folder, const char *uid, const char *uri, int type);

static void
vfolder_type_current(FolderBrowser *fb, int type)
{
    GPtrArray *uids;
    int i;
    
    /* get uid */
    uids = g_ptr_array_new ();
    message_list_foreach (fb->message_list, enumerate_msg, uids);
    
    if (uids->len == 1)
        vfolder_type_uid (fb->folder, (char *)uids->pdata[0], fb->uri, type);
    
    for (i = 0; i < uids->len; i++)
        g_free (uids->pdata[i]);
    g_ptr_array_free (uids, TRUE);
}

/* external api to vfolder/filter on X, based on current message */
void vfolder_subject (GtkWidget *w, FolderBrowser *fb) { vfolder_type_current(fb, AUTO_SUBJECT); }
void vfolder_sender (GtkWidget *w, FolderBrowser *fb) { vfolder_type_current(fb, AUTO_FROM); }
void vfolder_recipient (GtkWidget *w, FolderBrowser *fb) { vfolder_type_current(fb, AUTO_TO); }
void vfolder_mlist (GtkWidget *w, FolderBrowser *fb) { vfolder_type_current(fb, AUTO_MLIST); }

static void filter_type_uid (CamelFolder *folder, const char *uid, const char *source, int type);

static void
filter_type_current (FolderBrowser *fb, int type)
{
    GPtrArray *uids;
    int i;
    const char *source;
    
    if (folder_browser_is_sent (fb) || folder_browser_is_outbox (fb))
        source = FILTER_SOURCE_OUTGOING;
    else
        source = FILTER_SOURCE_INCOMING;
    
    /* get uid */
    uids = g_ptr_array_new ();
    message_list_foreach (fb->message_list, enumerate_msg, uids);
    
    if (uids->len == 1)
        filter_type_uid (fb->folder, (char *)uids->pdata[0], source, type);
    
    for (i = 0; i < uids->len; i++)
        g_free (uids->pdata[i]);
    g_ptr_array_free (uids, TRUE);
}

void filter_subject (GtkWidget *w, FolderBrowser *fb) { filter_type_current (fb, AUTO_SUBJECT); }
void filter_sender (GtkWidget *w, FolderBrowser *fb) { filter_type_current (fb, AUTO_FROM); }
void filter_recipient (GtkWidget *w, FolderBrowser *fb) { filter_type_current (fb, AUTO_TO); }
void filter_mlist (GtkWidget *w, FolderBrowser *fb) { filter_type_current (fb, AUTO_MLIST); }

/* ************************************************************ */

/* popup api to vfolder/filter on X, based on current selection */
struct _filter_data {
    CamelFolder *folder;
    const char *source;
    char *uid;
    int type;
    char *uri;
    char *mlist;
};

static void
filter_data_free (struct _filter_data *fdata)
{
    g_free (fdata->uid);
    g_free (fdata->uri);
    if (fdata->folder)
        camel_object_unref (fdata->folder);
    g_free (fdata->mlist);
    g_free (fdata);
}

static void
vfolder_type_got_message(CamelFolder *folder, const char *uid, CamelMimeMessage *msg, void *d)
{
    struct _filter_data *data = d;
    
    if (msg)
        vfolder_gui_add_from_message(msg, data->type, data->uri);
    
    filter_data_free (data);
}

static void
vfolder_type_uid(CamelFolder *folder, const char *uid, const char *uri, int type)
{
    struct _filter_data *data;
    
    data = g_malloc0(sizeof(*data));
    data->type = type;
    data->uri = g_strdup(uri);
    mail_get_message(folder, uid, vfolder_type_got_message, data, mail_thread_new);
}

static void vfolder_subject_uid (GtkWidget *w, struct _filter_data *fdata)  { vfolder_type_uid(fdata->folder, fdata->uid, fdata->uri, AUTO_SUBJECT); }
static void vfolder_sender_uid(GtkWidget *w, struct _filter_data *fdata)    { vfolder_type_uid(fdata->folder, fdata->uid, fdata->uri, AUTO_FROM); }
static void vfolder_recipient_uid(GtkWidget *w, struct _filter_data *fdata) { vfolder_type_uid(fdata->folder, fdata->uid, fdata->uri, AUTO_TO); }
static void vfolder_mlist_uid(GtkWidget *w, struct _filter_data *fdata)     { vfolder_type_uid(fdata->folder, fdata->uid, fdata->uri, AUTO_MLIST); }

static void
filter_type_got_message(CamelFolder *folder, const char *uid, CamelMimeMessage *msg, void *d)
{
    struct _filter_data *data = d;
    
    if (msg)
        filter_gui_add_from_message(msg, data->source, data->type);
    
    filter_data_free (data);
}

static void
filter_type_uid(CamelFolder *folder, const char *uid, const char *source, int type)
{
    struct _filter_data *data;
    
    data = g_malloc0(sizeof(*data));
    data->type = type;
    data->source = source;
    mail_get_message(folder, uid, filter_type_got_message, data, mail_thread_new);
}

static void filter_subject_uid (GtkWidget *w, struct _filter_data *fdata)   { filter_type_uid(fdata->folder, fdata->uid, fdata->source, AUTO_SUBJECT); }
static void filter_sender_uid(GtkWidget *w, struct _filter_data *fdata)     { filter_type_uid(fdata->folder, fdata->uid, fdata->source, AUTO_FROM); }
static void filter_recipient_uid(GtkWidget *w, struct _filter_data *fdata)  { filter_type_uid(fdata->folder, fdata->uid, fdata->source, AUTO_TO); }
static void filter_mlist_uid(GtkWidget *w, struct _filter_data *fdata)      { filter_type_uid(fdata->folder, fdata->uid, fdata->source, AUTO_MLIST); }

void
hide_none(GtkWidget *w, FolderBrowser *fb)
{
    message_list_hide_clear (fb->message_list);
}

void
hide_selected(GtkWidget *w, FolderBrowser *fb)
{
    GPtrArray *uids;
    int i;

    uids = g_ptr_array_new ();
    message_list_foreach (fb->message_list, enumerate_msg, uids);
    message_list_hide_uids (fb->message_list, uids);
    for (i = 0; i < uids->len; i++)
        g_free (uids->pdata[i]);
    g_ptr_array_free (uids, TRUE);
}

void
hide_deleted(GtkWidget *w, FolderBrowser *fb)
{
    MessageList *ml = fb->message_list;
    
    message_list_hide_add(ml, "(match-all (system-flag \"deleted\"))", ML_HIDE_SAME, ML_HIDE_SAME);
}

void
hide_read(GtkWidget *w, FolderBrowser *fb)
{
    MessageList *ml = fb->message_list;
    
    message_list_hide_add(ml, "(match-all (system-flag \"seen\"))", ML_HIDE_SAME, ML_HIDE_SAME);
}

/* dum de dum, about the 3rd copy of this function throughout the mailer/camel */
static const char *
strip_re(const char *subject)
{
    const unsigned char *s, *p;
    
    s = (unsigned char *) subject;
    
    while (*s) {
        while(isspace (*s))
            s++;
        if (s[0] == 0)
            break;
        if ((s[0] == 'r' || s[0] == 'R')
            && (s[1] == 'e' || s[1] == 'E')) {
            p = s+2;
            while (isdigit(*p) || (ispunct(*p) && (*p != ':')))
                p++;
            if (*p == ':') {
                s = p + 1;
            } else
                break;
        } else
            break;
    }
    return (char *) s;
}

void
hide_subject(GtkWidget *w, FolderBrowser *fb)
{
    const char *subject;
    GString *expr;
    
    if (fb->mail_display->current_message) {
        subject = camel_mime_message_get_subject(fb->mail_display->current_message);
        if (subject) {
            subject = strip_re(subject);
            if (subject && subject[0]) {
                expr = g_string_new ("(match-all (header-contains \"subject\" ");
                e_sexp_encode_string (expr, subject);
                g_string_append (expr, "))");
                message_list_hide_add (fb->message_list, expr->str, ML_HIDE_SAME, ML_HIDE_SAME);
                g_string_free (expr, TRUE);
                return;
            }
        }
    }
}

void
hide_sender (GtkWidget *w, FolderBrowser *fb)
{
    const CamelInternetAddress *from;
    const char *real, *addr;
    GString *expr;
    
    if (fb->mail_display->current_message) {
        from = camel_mime_message_get_from (fb->mail_display->current_message);
        if (camel_internet_address_get (from, 0, &real, &addr)) {
            expr = g_string_new ("(match-all (header-contains \"from\" ");
            e_sexp_encode_string (expr, addr);
            g_string_append (expr, "))");
            message_list_hide_add (fb->message_list, expr->str, ML_HIDE_SAME, ML_HIDE_SAME);
            g_string_free (expr, TRUE);
            return;
        }
    }
}

struct _label_data {
    FolderBrowser *fb;
    const char *label;
};

static void
set_msg_label (GtkWidget *widget, gpointer user_data)
{
    struct _label_data *data = user_data;
    GPtrArray *uids;
    int i;
    
    uids = g_ptr_array_new ();
    message_list_foreach (data->fb->message_list, enumerate_msg, uids);
    for (i = 0; i < uids->len; i++)
        camel_folder_set_message_user_tag (data->fb->folder, uids->pdata[i], "label", data->label);
    g_ptr_array_free (uids, TRUE);
}

static void
label_closures_free (GPtrArray *closures)
{
    struct _label_data *data;
    int i;
    
    for (i = 0; i < closures->len; i++) {
        data = closures->pdata[i];
        g_object_unref (data->fb);
        g_free (data);
    }
    g_ptr_array_free (closures, TRUE);
}

static void
mark_as_seen_cb (GtkWidget *widget, void *user_data)
{
    mark_as_seen (NULL, user_data, NULL);
}

static void
mark_as_unseen_cb (GtkWidget *widget, void *user_data)
{
    mark_as_unseen (NULL, user_data, NULL);
}

static void
mark_as_important_cb (GtkWidget *widget, void *user_data)
{
    mark_as_important (NULL, user_data, NULL);
}

static void
mark_as_unimportant_cb (GtkWidget *widget, void *user_data)
{
    mark_as_unimportant (NULL, user_data, NULL);
}

enum {
    SELECTION_SET              = 1<<1,
    CAN_MARK_READ              = 1<<2,
    CAN_MARK_UNREAD            = 1<<3,
    CAN_DELETE                 = 1<<4,
    CAN_UNDELETE               = 1<<5,
    IS_MAILING_LIST            = 1<<6,
    CAN_RESEND                 = 1<<7,
    CAN_MARK_IMPORTANT         = 1<<8,
    CAN_MARK_UNIMPORTANT       = 1<<9,
    CAN_FLAG_FOR_FOLLOWUP      = 1<<10,
    CAN_FLAG_COMPLETED         = 1<<11,
    CAN_CLEAR_FLAG             = 1<<12,
    CAN_ADD_SENDER             = 1<<13
};

#define MLIST_VFOLDER (3)
#define MLIST_FILTER (8)

static EPopupMenu filter_menu[] = {
    E_POPUP_ITEM_CC (N_("VFolder on _Subject"),        G_CALLBACK (vfolder_subject_uid),   NULL, SELECTION_SET),
    E_POPUP_ITEM_CC (N_("VFolder on Se_nder"),         G_CALLBACK (vfolder_sender_uid),    NULL, SELECTION_SET),
    E_POPUP_ITEM_CC (N_("VFolder on _Recipients"),     G_CALLBACK (vfolder_recipient_uid), NULL, SELECTION_SET),
    E_POPUP_ITEM_CC (N_("VFolder on Mailing _List"),   G_CALLBACK (vfolder_mlist_uid),     NULL, SELECTION_SET | IS_MAILING_LIST),
    
    E_POPUP_SEPARATOR,
    
    E_POPUP_ITEM_CC (N_("Filter on Sub_ject"),         G_CALLBACK (filter_subject_uid),    NULL, SELECTION_SET),
    E_POPUP_ITEM_CC (N_("Filter on Sen_der"),          G_CALLBACK (filter_sender_uid),     NULL, SELECTION_SET),
    E_POPUP_ITEM_CC (N_("Filter on Re_cipients"),      G_CALLBACK (filter_recipient_uid),  NULL, SELECTION_SET),
    E_POPUP_ITEM_CC (N_("Filter on _Mailing List"),    G_CALLBACK (filter_mlist_uid),      NULL, SELECTION_SET | IS_MAILING_LIST),
    
    E_POPUP_TERMINATOR
};

static EPopupMenu label_menu[] = {
    E_POPUP_PIXMAP_WIDGET_ITEM_CC (N_("None"), NULL, G_CALLBACK (set_msg_label), NULL, 0),
    E_POPUP_SEPARATOR,
    E_POPUP_PIXMAP_WIDGET_ITEM_CC (NULL, NULL, G_CALLBACK (set_msg_label), NULL, 0),
    E_POPUP_PIXMAP_WIDGET_ITEM_CC (NULL, NULL, G_CALLBACK (set_msg_label), NULL, 0),
    E_POPUP_PIXMAP_WIDGET_ITEM_CC (NULL, NULL, G_CALLBACK (set_msg_label), NULL, 0),
    E_POPUP_PIXMAP_WIDGET_ITEM_CC (NULL, NULL, G_CALLBACK (set_msg_label), NULL, 0),
    E_POPUP_PIXMAP_WIDGET_ITEM_CC (NULL, NULL, G_CALLBACK (set_msg_label), NULL, 0),
    E_POPUP_TERMINATOR
};

static EPopupMenu context_menu[] = {
    E_POPUP_ITEM (N_("_Open"),                    G_CALLBACK (open_msg),          0),
    E_POPUP_ITEM (N_("_Edit as New Message..."),  G_CALLBACK (resend_msg),        CAN_RESEND),
    E_POPUP_ITEM (N_("_Save As..."),              G_CALLBACK (save_msg),          0),
    E_POPUP_ITEM (N_("_Print"),                   G_CALLBACK (print_msg),         0),
    
    E_POPUP_SEPARATOR,
    
    E_POPUP_ITEM (N_("_Reply to Sender"),         G_CALLBACK (reply_to_sender),   0),
    E_POPUP_ITEM (N_("Reply to _List"),           G_CALLBACK (reply_to_list),     0),
    E_POPUP_ITEM (N_("Reply to _All"),            G_CALLBACK (reply_to_all),      0),
    E_POPUP_ITEM (N_("_Forward"),                 G_CALLBACK (forward),           0),
    
    E_POPUP_SEPARATOR,
    
    E_POPUP_ITEM (N_("Follo_w Up..."),            G_CALLBACK (flag_for_followup),       CAN_FLAG_FOR_FOLLOWUP),
    E_POPUP_ITEM (N_("Fla_g Completed"),          G_CALLBACK (flag_followup_completed), CAN_FLAG_COMPLETED),
    E_POPUP_ITEM (N_("Cl_ear Flag"),              G_CALLBACK (flag_followup_clear),     CAN_CLEAR_FLAG),
    
    /* separator here? */
    
    E_POPUP_ITEM (N_("Mar_k as Read"),            G_CALLBACK (mark_as_seen_cb),        CAN_MARK_READ),
    E_POPUP_ITEM (N_("Mark as _Unread"),          G_CALLBACK (mark_as_unseen_cb),      CAN_MARK_UNREAD),
    E_POPUP_ITEM (N_("Mark as _Important"),       G_CALLBACK (mark_as_important_cb),   CAN_MARK_IMPORTANT),
    E_POPUP_ITEM (N_("_Mark as Unimportant"),     G_CALLBACK (mark_as_unimportant_cb), CAN_MARK_UNIMPORTANT),
    
    E_POPUP_SEPARATOR,
    
    E_POPUP_ITEM (N_("_Delete"),                  G_CALLBACK (delete_msg),          CAN_DELETE),
    E_POPUP_ITEM (N_("U_ndelete"),                G_CALLBACK (undelete_msg),        CAN_UNDELETE),
    
    E_POPUP_SEPARATOR,
    
    E_POPUP_ITEM (N_("Mo_ve to Folder..."),       G_CALLBACK (move_msg_cb),          0),
    E_POPUP_ITEM (N_("_Copy to Folder..."),       G_CALLBACK (copy_msg_cb),          0),
    
    E_POPUP_SEPARATOR,
    
    E_POPUP_SUBMENU (N_("Label"),                 label_menu,                             0),
    
    E_POPUP_SEPARATOR,
    
    E_POPUP_ITEM (N_("Add Sender to Address_book"), G_CALLBACK (addrbook_sender), SELECTION_SET | CAN_ADD_SENDER),
    
    E_POPUP_SEPARATOR,
    
    E_POPUP_ITEM (N_("Appl_y Filters"),             G_CALLBACK (apply_filters),      0),
    
    E_POPUP_SEPARATOR,
    
    E_POPUP_SUBMENU (N_("Crea_te Rule From Message"), filter_menu,                        SELECTION_SET),
    
    E_POPUP_TERMINATOR
};

/* Note: this must be kept in sync with the context_menu!!! */
static char *context_pixmaps[] = {
    NULL, /* Open */
    NULL, /* Edit */
    "save-as-16.png",
    "print.xpm",
    NULL,
    "reply.xpm",
    NULL, /* Reply to List */
    "reply_to_all.xpm",
    "forward.xpm",
    NULL,
    "flag-for-followup-16.png",
    NULL, /* Flag */
    NULL, /* Clear */
    "mail-read.xpm",
    "mail-new.xpm",
    "priority-high.xpm",
    NULL, /* Mark as Unimportant */
    NULL,
    "evolution-trash-mini.png",
    "undelete_message-16.png",
    NULL,
    "move_message.xpm",
    "copy_16_message.xpm",
    NULL,
    NULL, /* Label */
    NULL,
    NULL, /* Add Sender to Addressbook */
    NULL,
    NULL, /* Apply Filters */
    NULL,
    NULL, /* Create Rule from Message */
};

struct cmpf_data {
    ETree *tree;
    int row, col;
};

static void
context_menu_position_func (GtkMenu *menu, gint *x, gint *y,
                gboolean *push_in, gpointer user_data)
{
    int tx, ty, tw, th;
    struct cmpf_data *closure = user_data;
    
    gdk_window_get_origin (GTK_WIDGET (closure->tree)->window, x, y);
    e_tree_get_cell_geometry (closure->tree, closure->row, closure->col,
                  &tx, &ty, &tw, &th);
    *x += tx + tw / 2;
    *y += ty + th / 2;
}

static void
setup_popup_icons (void)
{
    int i;
    
    for (i = 0; context_menu[i].name; i++) {
        if (context_pixmaps[i]) {
            char *filename;
            
            filename = g_strdup_printf ("%s/%s", EVOLUTION_IMAGES, context_pixmaps[i]);
            context_menu[i].pixmap_widget = gtk_image_new_from_file (filename);
            g_free (filename);
        }
    }
}

/* handle context menu over message-list */
static int
on_right_click (ETree *tree, gint row, ETreePath path, gint col, GdkEvent *event, FolderBrowser *fb)
{
    struct _filter_data *fdata = NULL;
    GPtrArray *uids, *closures;
    CamelMessageInfo *info;
    GSList *labels, *next;
    int enable_mask = 0;
    int hide_mask = 0;
    char *mlist = NULL;
    GtkMenu *menu;
    int i;
    
    if (!folder_browser_is_sent (fb)) {
        enable_mask |= CAN_RESEND;
        hide_mask |= CAN_RESEND;
    } else {
        enable_mask |= CAN_ADD_SENDER;
        hide_mask |= CAN_ADD_SENDER;
    }
    
    if (folder_browser_is_drafts (fb)) {
        enable_mask |= CAN_ADD_SENDER;
        hide_mask |= CAN_ADD_SENDER;
    }
    
    if (fb->folder == outbox_folder) {
        enable_mask |= CAN_ADD_SENDER;
        hide_mask |= CAN_ADD_SENDER;
    }
    
    enable_mask |= SELECTION_SET;
    
    /* get a list of uids */
    uids = g_ptr_array_new ();
    message_list_foreach (fb->message_list, enumerate_msg, uids);
    if (uids->len >= 1) {
        /* gray-out any items we don't need */
        gboolean have_deleted = FALSE;
        gboolean have_undeleted = FALSE;
        gboolean have_seen = FALSE;
        gboolean have_unseen = FALSE;
        gboolean have_important = FALSE;
        gboolean have_unimportant = FALSE;
        gboolean have_flag_for_followup = FALSE;
        gboolean have_flag_completed = FALSE;
        gboolean have_flag_incomplete = FALSE;
        gboolean have_unflagged = FALSE;
        const char *tag;
        
        for (i = 0; i < uids->len; i++) {
            info = camel_folder_get_message_info (fb->folder, uids->pdata[i]);
            if (info == NULL)
                continue;
            
            if (i == 0 && uids->len == 1) {
                const char *mname, *p;
                char c, *o;
                
                /* used by filter/vfolder from X callbacks */
                fdata = g_malloc0(sizeof(*fdata));
                fdata->uid = g_strdup(uids->pdata[i]);
                fdata->uri = g_strdup(fb->uri);
                fdata->folder = fb->folder;
                camel_object_ref((CamelObject *)fdata->folder);
                if (folder_browser_is_sent (fb) || folder_browser_is_outbox (fb))
                    fdata->source = FILTER_SOURCE_OUTGOING;
                else
                    fdata->source = FILTER_SOURCE_INCOMING;
                
                enable_mask &= ~SELECTION_SET;
                mname = camel_message_info_mlist(info);
                if (mname && mname[0]) {
                    fdata->mlist = g_strdup(mname);
                    
                    /* Escape the mailing list name before showing it */
                    mlist = g_alloca ((strlen (mname) * 2) + 1);
                    p = mname;
                    o = mlist;
                    while ((c = *p++)) {
                        if (c == '_')
                            *o++ = '_';
                        *o++ = c;
                    }
                    *o = 0;
                }
            }
            
            if (info->flags & CAMEL_MESSAGE_SEEN)
                have_seen = TRUE;
            else
                have_unseen = TRUE;
            
            if (info->flags & CAMEL_MESSAGE_DELETED)
                have_deleted = TRUE;
            else
                have_undeleted = TRUE;
            
            if (info->flags & CAMEL_MESSAGE_FLAGGED)
                have_important = TRUE;
            else
                have_unimportant = TRUE;
            
            tag = camel_tag_get (&info->user_tags, "follow-up");
            if (tag && *tag) {
                have_flag_for_followup = TRUE;
                tag = camel_tag_get (&info->user_tags, "completed-on");
                if (tag && *tag)
                    have_flag_completed = TRUE;
                else
                    have_flag_incomplete = TRUE;
            } else
                have_unflagged = TRUE;
            
            camel_folder_free_message_info (fb->folder, info);
            
            if (have_seen && have_unseen && have_deleted && have_undeleted)
                break;
        }
        
        if (!have_unseen)
            enable_mask |= CAN_MARK_READ;
        if (!have_seen)
            enable_mask |= CAN_MARK_UNREAD;
        
        if (!have_undeleted)
            enable_mask |= CAN_DELETE;
        if (!have_deleted)
            enable_mask |= CAN_UNDELETE;
        
        if (!have_unimportant)
            enable_mask |= CAN_MARK_IMPORTANT;
        if (!have_important)
            enable_mask |= CAN_MARK_UNIMPORTANT;
        
        if (!have_flag_for_followup)
            enable_mask |= CAN_CLEAR_FLAG;
        if (!have_unflagged)
            enable_mask |= CAN_FLAG_FOR_FOLLOWUP;
        if (!have_flag_incomplete)
            enable_mask |= CAN_FLAG_COMPLETED;
        
        /*
         * Hide items that wont get used.
         */
        if (!(have_unseen && have_seen)) {
            if (have_seen)
                hide_mask |= CAN_MARK_READ;
            else
                hide_mask |= CAN_MARK_UNREAD;
        }
        
        if (!(have_undeleted && have_deleted)) {
            if (have_deleted)
                hide_mask |= CAN_DELETE;
            else
                hide_mask |= CAN_UNDELETE;
        }
        
        if (!(have_important && have_unimportant)) {
            if (have_important)
                hide_mask |= CAN_MARK_IMPORTANT;
            else
                hide_mask |= CAN_MARK_UNIMPORTANT;
        }
        
        if (!have_flag_for_followup)
            hide_mask |= CAN_CLEAR_FLAG;
        if (!have_unflagged)
            hide_mask |= CAN_FLAG_FOR_FOLLOWUP;
        if (!have_flag_incomplete)
            hide_mask |= CAN_FLAG_COMPLETED;
    }
    
    /* free uids */
    for (i = 0; i < uids->len; i++)
        g_free (uids->pdata[i]);
    g_ptr_array_free (uids, TRUE);
    
    /* generate the "Filter on Mailing List" menu item name */
    if (mlist == NULL) {
        enable_mask |= IS_MAILING_LIST;
        filter_menu[MLIST_FILTER].name = g_strdup (_("Filter on _Mailing List"));
        filter_menu[MLIST_VFOLDER].name = g_strdup (_("VFolder on M_ailing List"));
    } else {
        filter_menu[MLIST_FILTER].name = g_strdup_printf (_("Filter on _Mailing List (%s)"), mlist);
        filter_menu[MLIST_VFOLDER].name = g_strdup_printf (_("VFolder on M_ailing List (%s)"), mlist);
    }
    
    /* create the label/colour menu */
    closures = g_ptr_array_new ();
    label_menu[0].closure = g_new (struct _label_data, 1);
    g_ptr_array_add (closures, label_menu[0].closure);
    g_object_ref (fb);
    ((struct _label_data *) label_menu[0].closure)->fb = fb;
    ((struct _label_data *) label_menu[0].closure)->label = NULL;
    
    i = 0;
    labels = mail_config_get_labels ();
    while (labels != NULL && i < 5) {
        struct _label_data *closure;
        MailConfigLabel *label;
        GdkPixmap *pixmap;
        GdkColormap *map;
        GdkColor colour;
        GdkGC *gc;
        
        label = labels->data;
        gdk_color_parse (label->colour, &colour);
        map = gdk_colormap_get_system ();
        gdk_color_alloc (map, &colour);
        
        pixmap = gdk_pixmap_new (GTK_WIDGET (fb)->window, 16, 16, -1);
        gc = gdk_gc_new (GTK_WIDGET (fb)->window);
        gdk_gc_set_foreground (gc, &colour);
        gdk_draw_rectangle (pixmap, gc, TRUE, 0, 0, 16, 16);
        gdk_gc_unref (gc);
        
        closure = g_new (struct _label_data, 1);
        g_object_ref (fb);
        closure->fb = fb;
        closure->label = label->name;
        
        g_ptr_array_add (closures, closure);
        
        label_menu[i + 2].name = label->name;
        label_menu[i + 2].pixmap_widget = gtk_image_new_from_pixmap (pixmap, NULL);
        label_menu[i + 2].closure = closure;
        
        i++;
        labels = labels->next;
    }
    
    setup_popup_icons ();
    
    for (i = 0; i < sizeof (filter_menu) / sizeof (filter_menu[0]); i++)
        filter_menu[i].closure = fdata;
    
    menu = e_popup_menu_create (context_menu, enable_mask, hide_mask, fb);
    e_auto_kill_popup_menu_on_selection_done (menu);
    
    g_object_set_data_full ((GObject *) menu, "label_closures", closures, (GtkDestroyNotify) label_closures_free);
    
    if (fdata)
        g_object_set_data_full ((GObject *) menu, "filter_data", fdata, (GtkDestroyNotify) filter_data_free);
    
    if (event->type == GDK_KEY_PRESS) {
        struct cmpf_data closure;
        
        closure.tree = tree;
        closure.row = row;
        closure.col = col;
        gtk_menu_popup (menu, NULL, NULL, context_menu_position_func,
                &closure, 0, event->key.time);
    } else {
        gtk_menu_popup (menu, NULL, NULL, NULL, NULL,
                event->button.button, event->button.time);
    }
    
    g_free (filter_menu[MLIST_FILTER].name);
    g_free (filter_menu[MLIST_VFOLDER].name);
    
    return TRUE;
}

static int
html_button_press_event (GtkWidget *widget, GdkEventButton *event, gpointer data)
{
    FolderBrowser *fb = data;
    HTMLEngine *engine;
    HTMLPoint *point;
    ETreePath *path;
    int row;
    
    if (event->type != GDK_BUTTON_PRESS || event->button != 3)
        return FALSE;
    
    engine = GTK_HTML (widget)->engine;
    point = html_engine_get_point_at (engine, event->x + engine->x_offset,
                      event->y + engine->y_offset, FALSE);
    
    if (point) {
        /* don't popup a menu if the mouse is hovering over a
                   url or a source image because those situations are
                   handled in mail-display.c's button_press_event
                   callback */
        const char *src, *url;
        
        url = html_object_get_url (point->object);
        src = html_object_get_src (point->object);
        
        if (url || src) {
            html_point_destroy (point);
            return FALSE;
        }
        
        html_point_destroy (point);
    }   
    
    path = e_tree_get_cursor (fb->message_list->tree);
    row = e_tree_row_of_node (fb->message_list->tree, path);
    
    on_right_click (fb->message_list->tree, row, path, 2,
            (GdkEvent *) event, fb);
    
    return TRUE;
}

static int
on_key_press (GtkWidget *widget, GdkEventKey *key, gpointer data)
{
    FolderBrowser *fb = data;
    ETreePath *path;
    int row;
    
    if (key->state & GDK_CONTROL_MASK)
        return FALSE;
    
    path = e_tree_get_cursor (fb->message_list->tree);
    row = e_tree_row_of_node (fb->message_list->tree, path);
    
    switch (key->keyval) {
    case GDK_Delete:
    case GDK_KP_Delete:
        delete_msg (NULL, fb);
        return TRUE;
        
    case GDK_Menu:
        on_right_click (fb->message_list->tree, row, path, 2,
                (GdkEvent *)key, fb);
        return TRUE;
    case '!':
        toggle_as_important (NULL, fb, NULL);
        return TRUE;
    }
    
    return FALSE;
}

static int
etree_key (ETree *tree, int row, ETreePath path, int col, GdkEvent *ev, FolderBrowser *fb)
{
    GtkAdjustment *vadj;
    gfloat page_size;
    
    if ((ev->key.state & GDK_CONTROL_MASK) != 0)
        return FALSE;
    
    vadj = gtk_scrolled_window_get_vadjustment (fb->mail_display->scroll);
    page_size = vadj->page_size - vadj->step_increment;
    
    switch (ev->key.keyval) {
    case GDK_space:
        /* Work around Ximian 4939 */
        if (vadj->upper < vadj->page_size)
            break;
        if (vadj->value < vadj->upper - vadj->page_size - page_size)
            vadj->value += page_size;
        else
            vadj->value = vadj->upper - vadj->page_size;
        gtk_adjustment_value_changed (vadj);
        break;
    case GDK_BackSpace:
        if (vadj->value > vadj->lower + page_size)
            vadj->value -= page_size;
        else
            vadj->value = vadj->lower;
        gtk_adjustment_value_changed (vadj);
        break;
    case GDK_Return:
    case GDK_KP_Enter:
    case GDK_ISO_Enter:
            open_msg (NULL, fb);
        break;
    default:
        return on_key_press ((GtkWidget *)tree, (GdkEventKey *)ev, fb);
    }
    
    return TRUE;
}

static void
on_double_click (ETree *tree, gint row, ETreePath path, gint col, GdkEvent *event, FolderBrowser *fb)
{
    /* Ignore double-clicks on columns where single-click doesn't
     * just select.
     */
    if (MESSAGE_LIST_COLUMN_IS_ACTIVE (col))
        return;
    
    open_msg (NULL, fb);
}

static void
on_selection_changed (GtkObject *obj, gpointer user_data)
{
    FolderBrowser *fb = FOLDER_BROWSER (user_data);
    FolderBrowserSelectionState state;
    
    /* we can get this signal at strange times...
     * if no uicomp, don't even bother */
    
    if (fb->uicomp == NULL)
        return;
    
    switch (e_selection_model_selected_count (E_SELECTION_MODEL (obj))) {
    case 0:
        state = FB_SELSTATE_NONE;
        break;
    case 1:
        state = FB_SELSTATE_SINGLE;
        break;
    default:
        state = FB_SELSTATE_MULTIPLE;
        break;
    }
    
    folder_browser_ui_set_selection_state (fb, state);
    
    update_status_bar_idle (fb);
}


static void
on_cursor_activated (ETree *tree, int row, ETreePath path, gpointer user_data)
{
    on_selection_changed ((GtkObject *)tree, user_data);
}

static gboolean
fb_resize_cb (GtkWidget *w, GdkEventButton *e, FolderBrowser *fb)
{
    GConfClient *gconf;

    gconf = gconf_client_get_default ();

    if (GTK_WIDGET_REALIZED (w) && fb->preview_shown)
        gconf_client_set_int (gconf, "/apps/evolution/mail/display/paned_size", gtk_paned_get_position (GTK_PANED (w)), NULL);

    return FALSE;
}

static void
folder_browser_gui_init (FolderBrowser *fb)
{
    extern RuleContext *search_context;
    ESelectionModel *esm;
    GConfClient *gconf;
    int paned_size;
    
    /* The panned container */
    fb->vpaned = gtk_vpaned_new ();
    gtk_widget_show (fb->vpaned);
    
    gtk_table_attach (GTK_TABLE (fb), fb->vpaned,
              0, 1, 1, 3,
              GTK_FILL | GTK_EXPAND,
              GTK_FILL | GTK_EXPAND,
              0, 0);
    
    /* quick-search bar */
    if (search_context) {
        const char *systemrules = g_object_get_data (G_OBJECT (search_context), "system");
        const char *userrules = g_object_get_data (G_OBJECT (search_context), "user");
        
        fb->search = e_filter_bar_new (search_context, systemrules, userrules,
                           folder_browser_config_search, fb);
        e_search_bar_set_menu ((ESearchBar *)fb->search, folder_browser_search_menu_items);
    }
    
    gtk_widget_show (GTK_WIDGET (fb->search));
    
    g_signal_connect (fb->search, "menu_activated",
              G_CALLBACK (folder_browser_search_menu_activated), fb);
    g_signal_connect (fb->search, "search_activated",
              G_CALLBACK (folder_browser_search_do_search), fb);
    g_signal_connect (fb->search, "query_changed",
              G_CALLBACK (folder_browser_query_changed), fb);
    
    gtk_table_attach (GTK_TABLE (fb), GTK_WIDGET (fb->search),
              0, 1, 0, 1,
              GTK_FILL | GTK_EXPAND,
              0,
              0, 0);
    
    esm = e_tree_get_selection_model (E_TREE (fb->message_list->tree));
    g_signal_connect (esm, "selection_changed", G_CALLBACK (on_selection_changed), fb);
    g_signal_connect (esm, "cursor_activated", G_CALLBACK (on_cursor_activated), fb);
    fb->selection_state = FB_SELSTATE_NONE; /* default to none */
    
    gtk_paned_add1 (GTK_PANED (fb->vpaned), GTK_WIDGET (fb->message_list));
    gtk_widget_show (GTK_WIDGET (fb->message_list));
    
    fb->paned_resize_id = g_signal_connect (fb->vpaned, "button_release_event",
                        G_CALLBACK (fb_resize_cb), fb);

    gconf = gconf_client_get_default ();
    paned_size = gconf_client_get_int (gconf, "/apps/evolution/mail/display/paned_size", NULL);
    gtk_paned_add2 (GTK_PANED (fb->vpaned), GTK_WIDGET (fb->mail_display));
    gtk_paned_set_position (GTK_PANED (fb->vpaned), paned_size);
    gtk_widget_show (GTK_WIDGET (fb->mail_display));
    gtk_widget_show (GTK_WIDGET (fb));
}

/* mark the message seen if the current message still matches */
static gint 
do_mark_seen (gpointer data)
{
    FolderBrowser *fb = FOLDER_BROWSER (data);
    
    if (fb->new_uid && fb->loaded_uid && !strcmp (fb->new_uid, fb->loaded_uid)) {
        camel_folder_set_message_flags (fb->folder, fb->new_uid,
                        CAMEL_MESSAGE_SEEN, CAMEL_MESSAGE_SEEN);
    }
    
    return FALSE;
}

/* callback when we have the message to display, after async loading it (see below) */
/* if we have pending uid's, it means another was selected before we finished displaying
   the last one - so we cycle through and start loading the pending one immediately now */
static void
done_message_selected (CamelFolder *folder, const char *uid, CamelMimeMessage *msg, void *data)
{
    FolderBrowser *fb = data;
    CamelMessageInfo *info;
    GConfClient *gconf;
    int timeout;
    
    gconf = gconf_client_get_default ();
    
    if (folder != fb->folder || fb->mail_display == NULL)
        return;
    
    gconf = gconf_client_get_default ();
    timeout = gconf_client_get_int (gconf, "/apps/evolution/mail/display/mark_seen_timeout", NULL);
    
    info = camel_folder_get_message_info (fb->folder, uid);
    mail_display_set_message (fb->mail_display, (CamelMedium *) msg, fb->folder, info);
    if (info)
        camel_folder_free_message_info (fb->folder, info);
    
    /* FIXME: should this signal be emitted here?? */
    g_signal_emit (fb, folder_browser_signals[MESSAGE_LOADED], 0, uid);
    
    /* pain, if we have pending stuff, re-run */
    if (fb->pending_uid) {
        g_free (fb->loading_uid);
        fb->loading_uid = fb->pending_uid;
        fb->pending_uid = NULL;
        
        mail_get_message (fb->folder, fb->loading_uid, done_message_selected, fb, mail_thread_new);
        return;
    }
    
    g_free (fb->loaded_uid);
    fb->loaded_uid = fb->loading_uid;
    fb->loading_uid = NULL;
    
    folder_browser_ui_message_loaded (fb);
    
    /* if we are still on the same message, do the 'idle read' thing */
    if (fb->seen_id)
        gtk_timeout_remove (fb->seen_id);
    
    if (msg && gconf_client_get_bool (gconf, "/apps/evolution/mail/display/mark_seen", NULL)) {
        if (timeout > 0)
            fb->seen_id = gtk_timeout_add (timeout, do_mark_seen, fb);
        else
            do_mark_seen (fb);
    }
}

/* ok we waited enough, display it anyway (see below) */
static gboolean
do_message_selected (FolderBrowser *fb)
{
    d(printf ("%p: selecting uid %s (delayed)\n", fb, fb->new_uid ? fb->new_uid : "NONE"));
    
    fb->loading_id = 0;
    
    /* if we are loading, then set a pending, but leave the loading, coudl cancel here (?) */
    if (fb->loading_uid) {
        g_free (fb->pending_uid);
        fb->pending_uid = g_strdup (fb->new_uid);
    } else {
        if (fb->new_uid) {
            fb->loading_uid = g_strdup (fb->new_uid);
            mail_get_message (fb->folder, fb->loading_uid, done_message_selected, fb, mail_thread_new);
        } else {
            mail_display_set_message (fb->mail_display, NULL, NULL, NULL);
        }
    }
    
    return FALSE;
}

/* when a message is selected, wait a while before trying to display it */
static void
on_message_selected (MessageList *ml, const char *uid, FolderBrowser *fb)
{
    d(printf ("%p: selecting uid %s (direct)\n", fb, uid ? uid : "NONE"));
    
    if (fb->loading_id != 0)
        gtk_timeout_remove (fb->loading_id);
    
    g_free (fb->new_uid);
    fb->new_uid = g_strdup (uid);
    
    if (fb->preview_shown)
        fb->loading_id = gtk_timeout_add (100, (GtkFunction)do_message_selected, fb);
}

static gboolean
on_message_list_focus_in (GtkWidget *widget, GdkEventFocus *event, gpointer user_data)
{
    FolderBrowser *fb = (FolderBrowser *) user_data;
    
    d(printf ("got focus!\n"));
    folder_browser_ui_message_list_focus (fb);
    
    return FALSE;
}

static gboolean
on_message_list_focus_out (GtkWidget *widget, GdkEventFocus *event, gpointer user_data)
{
    FolderBrowser *fb = (FolderBrowser *) user_data;
    
    d(printf ("got unfocus!\n"));
    folder_browser_ui_message_list_unfocus (fb);
    
    return FALSE;
}

static void
folder_browser_init (FolderBrowser *fb)
{
    fb->async_event = mail_async_event_new ();
    fb->get_id = -1;
}

static void
my_folder_browser_init (FolderBrowser *fb)
{
    int i;
    
    fb->view_instance = NULL;
    fb->view_menus = NULL;
    
    fb->pref_master = FALSE;
    
    /*
     * Setup parent class fields.
     */ 
    GTK_TABLE (fb)->homogeneous = FALSE;
    gtk_table_resize (GTK_TABLE (fb), 1, 2);
    
    /*
     * Our instance data
     */
    fb->message_list = (MessageList *)message_list_new ();
    fb->mail_display = (MailDisplay *)mail_display_new ();
    
    fb->preview_shown = TRUE;
    
    g_signal_connect (fb->mail_display->html, "key_press_event",
              G_CALLBACK (on_key_press), fb);
    g_signal_connect (fb->mail_display->html, "button_press_event",
              G_CALLBACK (html_button_press_event), fb);
    
    g_signal_connect (fb->message_list->tree, "key_press",
              G_CALLBACK (etree_key), fb);
    
    g_signal_connect (fb->message_list->tree, "right_click",
              G_CALLBACK (on_right_click), fb);
    
    g_signal_connect (fb->message_list->tree, "double_click",
              G_CALLBACK (on_double_click), fb);
    
    g_signal_connect (fb->message_list, "focus_in_event",
              G_CALLBACK (on_message_list_focus_in), fb);
    
    g_signal_connect (fb->message_list, "focus_out_event",
              G_CALLBACK (on_message_list_focus_out), fb);
    
    g_signal_connect (fb->message_list, "message_selected",
              G_CALLBACK (on_message_selected), fb);
    
    /* drag & drop */
    e_tree_drag_source_set (fb->message_list->tree, GDK_BUTTON1_MASK,
                drag_types, num_drag_types, GDK_ACTION_MOVE | GDK_ACTION_COPY);
    
    g_signal_connect (fb->message_list->tree, "tree_drag_data_get",
              G_CALLBACK (message_list_drag_data_get), fb);
    
    e_tree_drag_dest_set (fb->message_list->tree, GTK_DEST_DEFAULT_ALL,
                  drag_types, num_drag_types, GDK_ACTION_MOVE | GDK_ACTION_COPY);
    
    g_signal_connect (fb->message_list->tree, "tree_drag_data_received",
              G_CALLBACK (message_list_drag_data_received), fb);
    
    /* cut, copy & paste */
    fb->invisible = gtk_invisible_new ();
    g_object_ref (fb->invisible);
    gtk_object_sink ((GtkObject *) fb->invisible);
    
    for (i = 0; i < num_paste_types; i++)
        gtk_selection_add_target (fb->invisible, clipboard_atom,
                      paste_types[i].target,
                      paste_types[i].info);
    
    g_signal_connect (fb->invisible, "selection_get",
              G_CALLBACK (selection_get), fb);
    g_signal_connect (fb->invisible, "selection_clear_event",
              G_CALLBACK (selection_clear_event), fb);
    g_signal_connect (fb->invisible, "selection_received",
              G_CALLBACK (selection_received), fb);
    
    folder_browser_gui_init (fb);
}

GtkWidget *
folder_browser_new (const GNOME_Evolution_Shell shell, const char *uri)
{
    CORBA_Environment ev;
    FolderBrowser *folder_browser;
    
    CORBA_exception_init (&ev);
    
    folder_browser = g_object_new (folder_browser_get_type (), NULL);
    
    my_folder_browser_init (folder_browser);
    
    folder_browser->shell = CORBA_Object_duplicate (shell, &ev);
    if (ev._major != CORBA_NO_EXCEPTION) {
        folder_browser->shell = CORBA_OBJECT_NIL;
        gtk_widget_destroy (GTK_WIDGET (folder_browser));
        CORBA_exception_free (&ev);
        return NULL;
    }
    
    CORBA_exception_free (&ev);
    
    if (uri) {
        folder_browser->uri = g_strdup (uri);
        g_object_ref (folder_browser);
        folder_browser->get_id = mail_get_folder (folder_browser->uri, 0, got_folder,
                              folder_browser, mail_thread_new);
    }
    
    return GTK_WIDGET (folder_browser);
}


E_MAKE_TYPE (folder_browser, "FolderBrowser", FolderBrowser, folder_browser_class_init, folder_browser_init, PARENT_TYPE);