path: root/mail/message-list.c

/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/*
 * message-list.c: Displays the messages.
 *                 Implements CORBA's Evolution::MessageList
 *
 * Author:
 *     Miguel de Icaza (miguel@helixcode.com)
 *     Bertrand Guiheneuf (bg@aful.org)
 *
 * (C) 2000 Helix Code, Inc.
 */

#include <config.h>
#include <gnome.h>
#include <bonobo/bonobo-main.h>
#include <camel/camel-exception.h>
#include <camel/camel-folder.h>
#include <e-util/ename/e-name-western.h>

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

#include "message-list.h"
#include "message-thread.h"
#include "mail-threads.h"
#include "mail-tools.h"
#include "mail-mlist-magic.h"
#include "mail-ops.h"
#include "mail-config.h"
#include "mail-vfolder.h"
#include "mail-autofilter.h"
#include "mail.h"

#include "Mail.h"

#include <gal/util/e-util.h>
#include <gal/widgets/e-gui-utils.h>
#include <gal/widgets/e-popup-menu.h>
#include <gal/e-table/e-table-header-item.h>
#include <gal/e-table/e-table-item.h>

#include "art/mail-new.xpm"
#include "art/mail-read.xpm"
#include "art/mail-replied.xpm"
#include "art/attachment.xpm"
#include "art/priority-high.xpm"
#include "art/empty.xpm"
#include "art/score-lowest.xpm"
#include "art/score-lower.xpm"
#include "art/score-low.xpm"
#include "art/score-normal.xpm"
#include "art/score-high.xpm"
#include "art/score-higher.xpm"
#include "art/score-highest.xpm"

/*
 * Default sizes for the ETable display
 *
 */
#define N_CHARS(x) (CHAR_WIDTH * (x))

#define COL_ICON_WIDTH         (16)
#define COL_ATTACH_WIDTH       (16)
#define COL_CHECK_BOX_WIDTH    (16)
#define COL_FROM_EXPANSION     (24.0)
#define COL_FROM_WIDTH_MIN     (32)
#define COL_SUBJECT_EXPANSION  (30.0)
#define COL_SUBJECT_WIDTH_MIN  (32)
#define COL_SENT_EXPANSION     (24.0)
#define COL_SENT_WIDTH_MIN     (32)
#define COL_RECEIVED_EXPANSION (20.0)
#define COL_RECEIVED_WIDTH_MIN (32)
#define COL_TO_EXPANSION       (24.0)
#define COL_TO_WIDTH_MIN       (32)
#define COL_SIZE_EXPANSION     (6.0)
#define COL_SIZE_WIDTH_MIN     (32)

#define PARENT_TYPE (bonobo_object_get_type ())

static BonoboObjectClass *message_list_parent_class;
static POA_Evolution_MessageList__vepv evolution_message_list_vepv;

static void on_cursor_change_cmd (ETableScrolled *table, int row, gpointer user_data);
static void select_row (ETableScrolled *table, gpointer user_data);
static gint on_right_click (ETableScrolled *table, gint row, gint col, GdkEvent *event, MessageList *list);
static gint on_click (ETableScrolled *table, gint row, gint col, GdkEvent *event, MessageList *list);
static void on_double_click (ETableScrolled *table, gint row, MessageList *list);
static void select_msg (MessageList *message_list, gint row);
static char *filter_date (const void *data);
static void nuke_uids (GtkObject *o);

static void save_tree_state(MessageList *ml);

static struct {
    char **image_base;
    GdkPixbuf  *pixbuf;
} states_pixmaps [] = {
    { mail_new_xpm,     NULL },
    { mail_read_xpm,    NULL },
    { mail_replied_xpm, NULL },
    { empty_xpm,        NULL },
    { attachment_xpm,   NULL },
    { priority_high_xpm,    NULL },
    { score_lowest_xpm,     NULL },
    { score_lower_xpm,      NULL },
    { score_low_xpm,        NULL },
    { score_normal_xpm,     NULL },
    { score_high_xpm,       NULL },
    { score_higher_xpm,     NULL },
    { score_highest_xpm,    NULL },
    { NULL,         NULL }
};

enum DndTargetTyhpe {
    DND_TARGET_LIST_TYPE_URI,
};
#define URI_LIST_TYPE "text/uri-list"
static GtkTargetEntry drag_types[] = {
    { URI_LIST_TYPE, 0, DND_TARGET_LIST_TYPE_URI },
};
static const int num_drag_types = sizeof (drag_types) / sizeof (drag_types[0]);

static gint
address_compare (gconstpointer address1, gconstpointer address2)
{
    CamelInternetAddress *ia1, *ia2;
    const char *name1, *name2;
    const char *addr1, *addr2;
    gint retval = 0;
    
    ia1 = camel_internet_address_new ();
    ia2 = camel_internet_address_new ();
    
    camel_address_decode (CAMEL_ADDRESS (ia1), (const char *) address1);
    camel_address_decode (CAMEL_ADDRESS (ia2), (const char *) address2);
    
    if (!camel_internet_address_get (ia1, 0, &name1, &addr1)) {
        camel_object_unref (CAMEL_OBJECT (ia1));
        camel_object_unref (CAMEL_OBJECT (ia2));
        return 1;
    }
    
    if (!camel_internet_address_get (ia2, 0, &name2, &addr2)) {
        camel_object_unref (CAMEL_OBJECT (ia1));
        camel_object_unref (CAMEL_OBJECT (ia2));
        return -1;
    }
    
    if (!name1 && !name2) {
        /* if neither has a name we should compare addresses */
        retval = g_strcasecmp (addr1, addr2);
    } else {
        if (!name1)
            retval = -1;
        else if (!name2)
            retval = 1;
        else {
            ENameWestern *wname1, *wname2;
            
            wname1 = e_name_western_parse (name1);
            wname2 = e_name_western_parse (name2);
            
            if (!wname1->last && !wname2->last) {
                /* neither has a last name */
                retval = g_strcasecmp (name1, name2);
            } else {
                /* compare last names */
                if (!wname1->last)
                    retval = -1;
                else if (!wname2->last)
                    retval = 1;
                else {
                    retval = g_strcasecmp (wname1->last, wname2->last);
                    if (!retval) {
                        /* last names are identical - compare first names */
                        if (!wname1->first)
                            retval = -1;
                        else if (!wname2->first)
                            retval = 1;
                        else {
                            retval = g_strcasecmp (wname1->first, wname2->first);
                            if (!retval) {
                                /* first names are identical - compare addresses */
                                retval = g_strcasecmp (addr1, addr2);
                            }
                        }
                    }
                }
            }
            
            e_name_western_free (wname1);
            e_name_western_free (wname2);
        }
    }
    
    camel_object_unref (CAMEL_OBJECT (ia1));
    camel_object_unref (CAMEL_OBJECT (ia2));
    
    return retval;
}

static gint
subject_compare (gconstpointer subject1, gconstpointer subject2)
{
    char *sub1;
    char *sub2;
    
    /* trim off any "Re:"'s at the beginning of subject1 */
    sub1 = (char *) subject1;
    while (!g_strncasecmp (sub1, "Re:", 3)) {
        sub1 += 3;
        /* jump over any spaces */
        for ( ; *sub1 && isspace (*sub1); sub1++);
    }
    
    /* trim off any "Re:"'s at the beginning of subject2 */
    sub2 = (char *) subject2;
    while (!g_strncasecmp (sub2, "Re:", 3)) {
        sub2 += 3;
        /* jump over any spaces */
        for ( ; *sub2 && isspace (*sub2); sub2++);
    }
    
    /* jump over any spaces */
    for ( ; *sub1 && isspace (*sub1); sub1++);
    for ( ; *sub2 && isspace (*sub2); sub2++);
    
    return g_strcasecmp (sub1, sub2);
}

/* Gets the CamelMessageInfo for the message displayed at the given
 * view row.
 */
static const CamelMessageInfo *
get_message_info (MessageList *message_list, int row)
{
    ETreeModel *model = (ETreeModel *)message_list->table_model;
    ETreePath *node;
    char *uid;
    
    if (row >= e_table_model_row_count (message_list->table_model))
        return NULL;
    
    node = e_tree_model_node_at_row (model, row);
    g_return_val_if_fail (node != NULL, NULL);
    uid = e_tree_model_node_get_data (model, node);
    
    if (strncmp (uid, "uid:", 4) != 0)
        return NULL;
    uid += 4;
    
    return camel_folder_get_message_info (message_list->folder, uid);
}

/* Gets the uid of the message displayed at a given view row */
static const char *
get_message_uid (MessageList *message_list, int row)
{
    ETreeModel *model = (ETreeModel *)message_list->table_model;
    ETreePath *node;
    const char *uid;

    if (row >= e_table_model_row_count (message_list->table_model))
        return NULL;

    node = e_tree_model_node_at_row (model, row);
    g_return_val_if_fail (node != NULL, NULL);
    uid = e_tree_model_node_get_data (model, node);

    if (strncmp (uid, "uid:", 4) != 0)
        return NULL;
    uid += 4;

    return uid;
}

static gint 
mark_msg_seen (gpointer data)
{
    MessageList *ml = data;
    GPtrArray *uids;

    if (!ml->cursor_uid) 
        return FALSE;

    uids = g_ptr_array_new ();
    g_ptr_array_add (uids, g_strdup (ml->cursor_uid));
    mail_do_flag_messages (ml->folder, uids, FALSE,
                   CAMEL_MESSAGE_SEEN, CAMEL_MESSAGE_SEEN);
    return FALSE;
}

/**
 * message_list_select:
 * @message_list: a MessageList
 * @base_row: the (model) row to start from
 * @direction: the direction to search in
 * @flags: a set of flag values
 * @mask: a mask for comparing against @flags
 *
 * This moves the message list selection to a suitable row. @base_row
 * lists the first (model) row to try, but as a special case, model
 * row -1 is mapped to view row 0. @flags and @mask combine to specify
 * what constitutes a suitable row. @direction is
 * %MESSAGE_LIST_SELECT_NEXT if it should find the next matching
 * message, or %MESSAGE_LIST_SELECT_PREVIOUS if it should find the
 * previous. If no suitable row is found, the selection will be
 * unchanged but the message display will be cleared.
 **/
void
message_list_select (MessageList *message_list, int base_row,
             MessageListSelectDirection direction,
             guint32 flags, guint32 mask)
{
    const CamelMessageInfo *info;
    int vrow, mrow, last;
    ETableScrolled *ets = E_TABLE_SCROLLED (message_list->etable);

    if (direction == MESSAGE_LIST_SELECT_PREVIOUS)
        last = 0;
    else
        last = e_table_model_row_count (message_list->table_model);

    if (base_row == -1)
        vrow = 0;
    else
        vrow = e_table_model_to_view_row (ets->table, base_row);

    /* We don't know whether to use < or > due to "direction" */
    while (vrow != last) {
        mrow = e_table_view_to_model_row (ets->table, vrow);
        info = get_message_info (message_list, mrow);
        if (info && (info->flags & mask) == flags) {
            e_table_scrolled_set_cursor_row (ets, mrow);
            mail_do_display_message (message_list, info->uid, mark_msg_seen);
            return;
        }
        vrow += direction;
    }

    mail_display_set_message (message_list->parent_folder_browser->mail_display, NULL);
}

/* select a message and display it */
static void
select_msg (MessageList *message_list, gint row)
{
    const char *uid;

    uid = get_message_uid (message_list, row);
    mail_do_display_message (message_list, uid, mark_msg_seen);
}

#if 0
static void
message_list_drag_data_get (ETable             *table,
                int                 row,
                int                 col,
                GdkDragContext     *context,
                GtkSelectionData   *selection_data,
                guint               info,
                guint               time,
                gpointer            user_data)
{
    MessageList *mlist = (MessageList *) user_data;
    CamelMessageInfo *info = get_message_info (mlist, row);
    CamelException *ex;
    CamelFolder *folder;
    char *dirname = "/tmp/ev-XXXXXXXXXX";
    char *filename;
    char *url;
    
    switch (info) {
    case DND_TARGET_TYPE_URI_LIST:
        dirname = mkdtemp (dirname);
        filename = g_strdup_printf ("%s.eml", info->subject);
        url = g_strdup_printf ("file:%s", dirname);
        
        ex = camel_exception_new ();
        folder = mail_tool_get_folder_from_urlname (url, filename, CAMEL_STORE_FOLDER_CREATE, ex);
        if (camel_exception_is_set (ex)) {
            camel_exception_free (ex);
            g_free (url);
            return;
        }
        
        gtk_selection_data_set (selection_data, selection_data->target, 8,
                    (guchar *) url, strlen (url));
        
        camel_object_unref (CAMEL_OBJECT (folder));
        g_free (filename);
        g_free (url);
        break;
    default:
        break;
    }
    e_table_drag_source_set (table, GDK_BUTTON1_MASK, drag_types, num_drag_types, GDK_ACTION_MOVE);
}
#endif

/*
 * SimpleTableModel::col_count
 */
static int
ml_col_count (ETableModel *etm, void *data)
{
    return COL_LAST;
}

static void *
ml_duplicate_value (ETableModel *etm, int col, const void *value, void *data)
{
    switch (col){
    case COL_MESSAGE_STATUS:
    case COL_FLAGGED:
    case COL_SCORE:
    case COL_ATTACHMENT:
    case COL_DELETED:
    case COL_UNREAD:
    case COL_SENT:
    case COL_RECEIVED:
        return (void *) value;

    case COL_FROM:
    case COL_SUBJECT:
    case COL_TO:
    case COL_SIZE:
        return g_strdup (value);
    default:
        g_assert_not_reached ();
    }
    return NULL;
}

static void
ml_free_value (ETableModel *etm, int col, void *value, void *data)
{
    switch (col){
    case COL_MESSAGE_STATUS:
    case COL_FLAGGED:
    case COL_SCORE:
    case COL_ATTACHMENT:
    case COL_DELETED:
    case COL_UNREAD:
    case COL_SENT:
    case COL_RECEIVED:
        break;

    case COL_FROM:
    case COL_SUBJECT:
    case COL_TO:
    case COL_SIZE:
        g_free (value);
        break;
    default:
        g_assert_not_reached ();
    }
}

static void *
ml_initialize_value (ETableModel *etm, int col, void *data)
{
    switch (col){
    case COL_MESSAGE_STATUS:
    case COL_FLAGGED:
    case COL_SCORE:
    case COL_ATTACHMENT:
    case COL_DELETED:
    case COL_UNREAD:
    case COL_SENT:
    case COL_RECEIVED:
        return NULL;

    case COL_FROM:
    case COL_SUBJECT:
    case COL_TO:
    case COL_SIZE:
        return g_strdup("");
    default:
        g_assert_not_reached ();
    }

    return NULL;
}

static gboolean
ml_value_is_empty (ETableModel *etm, int col, const void *value, void *data)
{
    switch (col){
    case COL_MESSAGE_STATUS:
    case COL_FLAGGED:
    case COL_SCORE:
    case COL_ATTACHMENT:
    case COL_DELETED:
    case COL_UNREAD:
    case COL_SENT:
    case COL_RECEIVED:
        return value == NULL;

    case COL_FROM:
    case COL_SUBJECT:
    case COL_TO:
    case COL_SIZE:
        return !(value && *(char *)value);
    default:
        g_assert_not_reached ();
        return FALSE;
    }
}

static char *
ml_value_to_string (ETableModel *etm, int col, const void *value, void *data)
{
    switch (col){
    case COL_MESSAGE_STATUS:
        switch ((int) value) {
        case 0:
            return g_strdup (_("Unseen"));
            break;
        case 1:
            return g_strdup (_("Seen"));
            break;
        case 2:
            return g_strdup (_("Answered"));
            break;
        default:
            return g_strdup ("");
            break;
        }
        break;
        
    case COL_SCORE:
        switch ((int) value) {
        case -3:
            return g_strdup ("Lowest");
            break;
        case -2:
            return g_strdup ("Lower");
            break;
        case -1:
            return g_strdup ("Low");
            break;
        case 1:
            return g_strdup ("High");
            break;
        case 2:
            return g_strdup ("Higher");
            break;
        case 3:
            return g_strdup ("Highest");
            break;
        default:
            return g_strdup ("Normal");
            break;
        }
        break;
        
    case COL_ATTACHMENT:
    case COL_FLAGGED:
    case COL_DELETED:
    case COL_UNREAD:
        return g_strdup_printf("%d", (int) value);
        
    case COL_SENT:
    case COL_RECEIVED:
        return filter_date (value);
        
    case COL_FROM:
    case COL_SUBJECT:
    case COL_TO:
    case COL_SIZE:
        return g_strdup (value);
    default:
        g_assert_not_reached ();
        return NULL;
    }
}

static GdkPixbuf *
ml_tree_icon_at (ETreeModel *etm, ETreePath *path, void *model_data)
{
    /* we dont really need an icon ... */
    return NULL;
}

/* return true if there are any unread messages in the subtree */
static int
subtree_unread(MessageList *ml, ETreePath *node)
{
    const CamelMessageInfo *info;
    char *uid;

    while (node) {
        ETreePath *child;
        uid = e_tree_model_node_get_data((ETreeModel *)ml->table_model, node);
        if (strncmp (uid, "uid:", 4) == 0) {
            info = camel_folder_get_message_info(ml->folder, uid+4);
            if (!(info->flags & CAMEL_MESSAGE_SEEN))
                return TRUE;
        }
        if ((child = e_tree_model_node_get_first_child (E_TREE_MODEL (ml->table_model), node)))
            if (subtree_unread(ml, child))
                return TRUE;
        node = e_tree_model_node_get_next (E_TREE_MODEL (ml->table_model), node);
    }
    return FALSE;
}

static gboolean
content_is_attachment(CamelMessageContentInfo *ci)
{
    CamelMessageContentInfo *child;

    /* no info about content */
    if (ci == NULL)
        return FALSE;

    /* we assume multipart/mixed is an attachment always
       other multipart / * is only an attachment if it contains multipart/mixed's, or
       non-text parts */
    if (header_content_type_is(ci->type, "multipart", "*")) {
        if (header_content_type_is(ci->type, "multipart", "mixed")) {
            return TRUE;
        }
        child = ci->childs;
        while (child) {
            if (content_is_attachment(child)) {
                return TRUE;
            }
            child = child->next;
        }
        return FALSE;
    } else {
        return !header_content_type_is(ci->type, "text", "*");
    }
}

static void *
ml_tree_value_at (ETreeModel *etm, ETreePath *path, int col, void *model_data)
{
    MessageList *message_list = model_data;
    const CamelMessageInfo *msg_info;
    static char buffer [10];
    char *uid;

    /* retrieve the message information array */
    uid = e_tree_model_node_get_data (etm, path);
    if (strncmp (uid, "uid:", 4) != 0)
        goto fake;
    uid += 4;

    msg_info = camel_folder_get_message_info (message_list->folder, uid);
    g_return_val_if_fail (msg_info != NULL, NULL);
    
    switch (col){
    case COL_MESSAGE_STATUS:
        if (msg_info->flags & CAMEL_MESSAGE_ANSWERED)
            return GINT_TO_POINTER (2);
        else if (msg_info->flags & CAMEL_MESSAGE_SEEN)
            return GINT_TO_POINTER (1);
        else
            return GINT_TO_POINTER (0);
        
    case COL_FLAGGED:
        if (msg_info->flags & CAMEL_MESSAGE_FLAGGED)
            return GINT_TO_POINTER (1);
        else
            return GINT_TO_POINTER (0);

    case COL_SCORE:
    {
        const char *tag;
        int score = 0;
        
        tag = camel_tag_get ((CamelTag **) &msg_info->user_tags, "score");
        if (tag)
            score = atoi (tag);
        
        return GINT_TO_POINTER (score);
    }
        
    case COL_ATTACHMENT:
        if (content_is_attachment(msg_info->content))
            return (void *)1;
        else
            return (void *)0;
        
    case COL_FROM:
        if (msg_info->from)
            return msg_info->from;
        else
            return "";
        
    case COL_SUBJECT:
        if (msg_info->subject)
            return msg_info->subject;
        else
            return "";
        
    case COL_SENT:
        return GINT_TO_POINTER (msg_info->date_sent);
        
    case COL_RECEIVED:
        return GINT_TO_POINTER (msg_info->date_received);
        
    case COL_TO:
        if (msg_info->to)
            return msg_info->to;
        else
            return "";
        
    case COL_SIZE:
        sprintf (buffer, "%d", msg_info->size);
        return buffer;
        
    case COL_DELETED:
        if (msg_info->flags & CAMEL_MESSAGE_DELETED)
            return GINT_TO_POINTER (1);
        else
            return GINT_TO_POINTER (0);
        
    case COL_UNREAD:
        return GINT_TO_POINTER (!(msg_info->flags & CAMEL_MESSAGE_SEEN));
        
    case COL_COLOUR:
    {
        const char *colour;

        colour = camel_tag_get ((CamelTag **) &msg_info->user_tags,
                    "colour");
        if (colour)
            return (void *)colour;
        else if (msg_info->flags & CAMEL_MESSAGE_FLAGGED)
            /* FIXME: extract from the xpm somehow. */
            return "#A7453E";
        else
            return NULL;
    }
    }

    g_assert_not_reached ();
    
 fake:
    /* This is a fake tree parent */
    switch (col){
    case COL_UNREAD:
        /* this value should probably be cached, as it could take a bit
           of processing to evaluate all the time */
        return (void *)subtree_unread(message_list,
                          e_tree_model_node_get_first_child(etm, path));
    case COL_MESSAGE_STATUS:
    case COL_FLAGGED:
    case COL_SCORE:
    case COL_ATTACHMENT:
    case COL_DELETED:
    case COL_COLOUR:
    case COL_SENT:
    case COL_RECEIVED:
        return (void *) 0;
        
    case COL_SUBJECT:
        return strchr (uid, ':') + 1;
        
    case COL_FROM:
    case COL_TO:
    case COL_SIZE:
        return "?";
    }
    g_assert_not_reached ();
    
    return NULL;
}

static void
ml_tree_set_value_at (ETreeModel *etm, ETreePath *path, int col,
              const void *val, void *model_data)
{
    g_assert_not_reached ();
}

static gboolean
ml_tree_is_cell_editable (ETreeModel *etm, ETreePath *path, int col, void *model_data)
{
    return FALSE;
}

static void
message_list_init_images (void)
{
    int i;
    
    /*
     * Only load once, and share
     */
    if (states_pixmaps [0].pixbuf)
        return;
    
    for (i = 0; states_pixmaps [i].image_base; i++){
        states_pixmaps [i].pixbuf = gdk_pixbuf_new_from_xpm_data (
            (const char **) states_pixmaps [i].image_base);
    }
}

static char *
filter_date (const void *data)
{
    time_t date = GPOINTER_TO_INT (data);
    char buf[26], *p;

    if (date == 0)
        return g_strdup ("?");

#ifdef CTIME_R_THREE_ARGS
    ctime_r (&date, buf, 26);
#else
    ctime_r (&date, buf);
#endif

    p = strchr (buf, '\n');
    if (p)
        *p = '\0';

    return g_strdup (buf);
}

static ETableExtras *
message_list_create_extras (void)
{
    int i;
    GdkPixbuf *images [7];
    ETableExtras *extras;
    ECell *cell;

    extras = e_table_extras_new();
    e_table_extras_add_pixbuf(extras, "status", states_pixmaps [0].pixbuf);
    e_table_extras_add_pixbuf(extras, "score", states_pixmaps [11].pixbuf);
    e_table_extras_add_pixbuf(extras, "attachment", states_pixmaps [4].pixbuf);
    e_table_extras_add_pixbuf(extras, "flagged", states_pixmaps [5].pixbuf);

    e_table_extras_add_compare(extras, "address_compare", address_compare);
    e_table_extras_add_compare(extras, "subject_compare", subject_compare);

    for (i = 0; i < 3; i++)
        images [i] = states_pixmaps [i].pixbuf;
    
    e_table_extras_add_cell(extras, "render_message_status", e_cell_toggle_new (0, 3, images));

    for (i = 0; i < 2; i++)
        images [i] = states_pixmaps [i + 3].pixbuf;
    
    e_table_extras_add_cell(extras, "render_attachment", e_cell_toggle_new (0, 2, images));
    
    images [1] = states_pixmaps [5].pixbuf;
    e_table_extras_add_cell(extras, "render_flagged", e_cell_toggle_new (0, 2, images));

    for (i = 0; i < 7; i++)
        images[i] = states_pixmaps [i + 5].pixbuf;
    
    e_table_extras_add_cell(extras, "render_score", e_cell_toggle_new (0, 7, images));

    cell = e_cell_text_new (
        NULL, GTK_JUSTIFY_LEFT);
    
    gtk_object_set (GTK_OBJECT (cell),
            "text_filter", filter_date,
            NULL);
    gtk_object_set (GTK_OBJECT (cell),
            "strikeout_column", COL_DELETED,
            NULL);
    gtk_object_set (GTK_OBJECT (cell),
            "bold_column", COL_UNREAD,
            NULL);
    gtk_object_set (GTK_OBJECT (cell),
            "color_column", COL_COLOUR,
            NULL);
    e_table_extras_add_cell(extras, "render_date", cell);

    cell = e_cell_text_new (
        NULL, GTK_JUSTIFY_LEFT);

    gtk_object_set (GTK_OBJECT (cell),
            "strikeout_column", COL_DELETED,
            NULL);
    gtk_object_set (GTK_OBJECT (cell),
            "bold_column", COL_UNREAD,
            NULL);
    gtk_object_set (GTK_OBJECT (cell),
            "color_column", COL_COLOUR,
            NULL);
    e_table_extras_add_cell(extras, "render_text", cell);

    e_table_extras_add_cell(extras, "render_tree", 
        e_cell_tree_new (NULL, NULL, /* let the tree renderer default the pixmaps */
                 TRUE, cell));

    return extras;
}

static void
save_header_state(MessageList *ml)
{
    char *filename;

    if (ml->folder == NULL
        || ml->etable == NULL)
        return;

    filename = mail_config_folder_to_cachename(ml->folder, "et-header-");
    e_table_scrolled_save_state(E_TABLE_SCROLLED(ml->etable), filename);
    g_free(filename);
}

static char *
message_list_get_layout (MessageList *message_list)
{
    /* Message status, From, Subject, Sent Date */
    return g_strdup ("<ETableSpecification cursor-mode=\"line\">"
             "<ETableColumn model_col= \"0\" pixbuf=\"status\" expansion=\"0.0\" minimum_width=\"18\" resizable=\"false\" cell=\"render_message_status\" compare=\"integer\" sortable=\"false\"/>"
             "<ETableColumn model_col= \"1\" pixbuf=\"flagged\" expansion=\"0.0\" minimum_width=\"20\" resizable=\"false\" cell=\"render_flagged\" compare=\"integer\"/>"
             "<ETableColumn model_col= \"2\" pixbuf=\"score\" expansion=\"0.0\" minimum_width=\"20\" resizable=\"false\" cell=\"render_score\" compare=\"integer\"/>"
             "<ETableColumn model_col= \"3\" pixbuf=\"attachment\" expansion=\"0.0\" minimum_width=\"18\" resizable=\"false\" cell=\"render_attachment\" compare=\"integer\" sortable=\"false\"/>"
             "<ETableColumn model_col= \"4\" _title=\"From\" expansion=\"24.0\" minimum_width=\"32\" resizable=\"true\" cell=\"render_text\" compare=\"address_compare\"/>"
             "<ETableColumn model_col= \"5\" _title=\"Subject\" expansion=\"30.0\" minimum_width=\"32\" resizable=\"true\" cell=\"render_tree\" compare=\"subject_compare\"/>"
             "<ETableColumn model_col= \"6\" _title=\"Date\" expansion=\"24.0\" minimum_width=\"32\" resizable=\"true\" cell=\"render_date\" compare=\"integer\"/>"
             "<ETableColumn model_col= \"7\" _title=\"Received\" expansion=\"20.0\" minimum_width=\"32\" resizable=\"true\" cell=\"render_date\" compare=\"integer\"/>"
             "<ETableColumn model_col= \"8\" _title=\"To\" expansion=\"24.0\" minimum_width=\"32\" resizable=\"true\" cell=\"render_text\" compare=\"address_compare\"/>"
             "<ETableColumn model_col= \"9\" _title=\"Size\" expansion=\"6.0\" minimum_width=\"32\" resizable=\"true\" cell=\"render_text\" compare=\"string\"/>"
             "<ETableState> <column source=\"0\"/> <column source=\"1\"/> <column source=\"4\"/>"
             "<column source=\"5\"/> <column source=\"6\"/>"
             "<grouping> </grouping> </ETableState>"
             "</ETableSpecification>");
}

static void
message_list_setup_etable(MessageList *message_list)
{
    char *state = "<ETableState>"
        "<column source=\"0\"/> <column source=\"1\"/> "
        "<column source=\"8\"/> <column source=\"5\"/> "
        "<column source=\"6\"/> <grouping> </grouping> </ETableState>";

    /* build the spec based on the folder, and possibly from a saved file */
    /* otherwise, leave default */
    if (message_list->folder) {
        char *name;
        char *path;
        struct stat st;
        
        path = mail_config_folder_to_cachename(message_list->folder, "et-header-");
        if (path && stat(path, &st) == 0 && st.st_size > 0 && S_ISREG(st.st_mode)) {
            e_table_scrolled_load_state(E_TABLE_SCROLLED (message_list->etable), path);
        } else {
            /* I wonder if there's a better way to do this ...? */
            name = camel_service_get_name(CAMEL_SERVICE(message_list->folder->parent_store), TRUE);
            printf ("folder name is '%s'\n", name);
            if (strstr (name, "/Drafts") != NULL
                || strstr (name, "/Outbox") != NULL
                || strstr (name, "/Sent") != NULL) {
                e_table_scrolled_set_state(E_TABLE_SCROLLED(message_list->etable), state);
            }
        }
        g_free (path);
    }
}

/*
 * GtkObject::init
 */
static void
message_list_init (GtkObject *object)
{
    ETableExtras *extras;
    MessageList *message_list = MESSAGE_LIST (object);
    char *spec;

    message_list->table_model = (ETableModel *)
        e_tree_simple_new (ml_col_count,
                   ml_duplicate_value,
                   ml_free_value,
                   ml_initialize_value,
                   ml_value_is_empty,
                   ml_value_to_string,
                   ml_tree_icon_at, ml_tree_value_at,
                   ml_tree_set_value_at,
                   ml_tree_is_cell_editable,
                   message_list);
    e_tree_model_root_node_set_visible ((ETreeModel *)message_list->table_model, FALSE);
    gtk_signal_connect (GTK_OBJECT (message_list->table_model), "destroy", 
                (GtkSignalFunc) nuke_uids, NULL);

    /*
     * The etable
     */

    spec = message_list_get_layout (message_list);
    extras = message_list_create_extras();
    message_list->etable = e_table_scrolled_new (message_list->table_model, extras, spec, NULL);
    g_free (spec);
    gtk_object_sink(GTK_OBJECT(extras));

    e_scroll_frame_set_policy (E_SCROLL_FRAME (message_list->etable), GTK_POLICY_AUTOMATIC, GTK_POLICY_ALWAYS);

    gtk_object_set(GTK_OBJECT(message_list->etable),
               "drawfocus", FALSE,
               NULL);

    /*
     *gtk_signal_connect (GTK_OBJECT (message_list->etable), "realize",
     *          GTK_SIGNAL_FUNC (select_row), message_list);
     */

    gtk_signal_connect (GTK_OBJECT (message_list->etable), "cursor_change",
               GTK_SIGNAL_FUNC (on_cursor_change_cmd), message_list);

    gtk_signal_connect (GTK_OBJECT (message_list->etable), "click",
                GTK_SIGNAL_FUNC (on_click), message_list);
    
    gtk_signal_connect (GTK_OBJECT (message_list->etable), "right_click",
                GTK_SIGNAL_FUNC (on_right_click), message_list);
    
    gtk_signal_connect (GTK_OBJECT (message_list->etable), "double_click",
                GTK_SIGNAL_FUNC (on_double_click), message_list);

#if 0
    /* drag & drop */
    e_table_drag_source_set (message_list->etable, GDK_BUTTON1_MASK,
                 drag_types, num_drag_types, GDK_ACTION_MOVE);
    
    gtk_signal_connect (GTK_OBJECT (message_list->etable), "drag_data_get",
                GTK_SIGNAL_FUNC (message_list_drag_data_get), message_list);
#endif
    
    gtk_widget_show (message_list->etable);

    gtk_object_ref (GTK_OBJECT (message_list->table_model));
    gtk_object_sink (GTK_OBJECT (message_list->table_model));
    
    /*
     * We do own the Etable, not some widget container
     */
    gtk_object_ref (GTK_OBJECT (message_list->etable));
    gtk_object_sink (GTK_OBJECT (message_list->etable));
}

static void
free_key (gpointer key, gpointer value, gpointer data)
{
    g_free (key);
}

static void
message_list_destroy (GtkObject *object)
{
    MessageList *message_list = MESSAGE_LIST (object);

    if (message_list->folder) {
        save_tree_state(message_list);
        save_header_state(message_list);
    }
    
    gtk_object_unref (GTK_OBJECT (message_list->table_model));
    gtk_object_unref (GTK_OBJECT (message_list->etable));
    
    if (message_list->uid_rowmap) {
        g_hash_table_foreach (message_list->uid_rowmap,
                      free_key, NULL);
        g_hash_table_destroy (message_list->uid_rowmap);
    }
    
    if (message_list->idle_id != 0)
        g_source_remove(message_list->idle_id);
    
    if (message_list->seen_id)
        gtk_timeout_remove (message_list->seen_id);
    
    if (message_list->folder)
        camel_object_unref (CAMEL_OBJECT (message_list->folder));
    
    GTK_OBJECT_CLASS (message_list_parent_class)->destroy (object);
}

/*
 * CORBA method: Evolution::MessageList::select_message
 */
static void
MessageList_select_message (PortableServer_Servant _servant,
                const CORBA_long message_number,
                CORBA_Environment *ev)
{
    printf ("FIXME: select message method\n");
}

/*
 * CORBA method: Evolution::MessageList::open_message
 */
static void
MessageList_open_message (PortableServer_Servant _servant,
              const CORBA_long message_number,
              CORBA_Environment *ev)
{
    printf ("FIXME: open message method\n");
}

static POA_Evolution_MessageList__epv *
evolution_message_list_get_epv (void)
{
    POA_Evolution_MessageList__epv *epv;

    epv = g_new0 (POA_Evolution_MessageList__epv, 1);

    epv->select_message = MessageList_select_message;
    epv->open_message   = MessageList_open_message;

    return epv;
}

static void
message_list_corba_class_init (void)
{
    evolution_message_list_vepv.Bonobo_Unknown_epv = bonobo_object_get_epv ();
    evolution_message_list_vepv.Evolution_MessageList_epv = evolution_message_list_get_epv ();
}

/*
 * GtkObjectClass::init
 */
static void
message_list_class_init (GtkObjectClass *object_class)
{
    message_list_parent_class = gtk_type_class (PARENT_TYPE);

    object_class->destroy = message_list_destroy;

    message_list_corba_class_init ();

    message_list_init_images ();
}

static void
message_list_construct (MessageList *message_list, Evolution_MessageList corba_message_list)
{
    bonobo_object_construct (BONOBO_OBJECT (message_list), corba_message_list);
}

static Evolution_MessageList
create_corba_message_list (BonoboObject *object)
{
    POA_Evolution_MessageList *servant;
    CORBA_Environment ev;

    servant = (POA_Evolution_MessageList *) g_new0 (BonoboObjectServant, 1);
    servant->vepv = &evolution_message_list_vepv;

    CORBA_exception_init (&ev);
    POA_Evolution_MessageList__init ((PortableServer_Servant) servant, &ev);
    if (ev._major != CORBA_NO_EXCEPTION){
        g_free (servant);
        CORBA_exception_free (&ev);
        return CORBA_OBJECT_NIL;
    }

    CORBA_exception_free (&ev);
    return (Evolution_MessageList) bonobo_object_activate_servant (object, servant);
}

BonoboObject *
message_list_new (FolderBrowser *parent_folder_browser)
{
    Evolution_MessageList corba_object;
    MessageList *message_list;

    g_assert (parent_folder_browser);

    message_list = gtk_type_new (message_list_get_type ());

    corba_object = create_corba_message_list (BONOBO_OBJECT (message_list));
    if (corba_object == CORBA_OBJECT_NIL){
        gtk_object_destroy (GTK_OBJECT (message_list));
        return NULL;
    }

    message_list->parent_folder_browser = parent_folder_browser;

    message_list->idle_id = 0;

    message_list_construct (message_list, corba_object);

    return BONOBO_OBJECT (message_list);
}

static void
clear_tree (MessageList *ml)
{
    ETreeModel *etm = E_TREE_MODEL (ml->table_model);

    if (ml->tree_root)
        e_tree_model_node_remove (etm, ml->tree_root);
    ml->tree_root =
        e_tree_model_node_insert (etm, NULL, 0, NULL);
    e_tree_model_node_set_expanded (etm, ml->tree_root, TRUE);
}

/* we save the node id to the file if the node should be closed when
   we start up.  We only save nodeid's for messages with children */
static void
save_node_state(MessageList *ml, FILE *out, ETreePath *node)
{
    char *data;
    const CamelMessageInfo *info;

    while (node) {
        ETreePath *child = e_tree_model_node_get_first_child (E_TREE_MODEL (ml->table_model), node);
        if (child
            && !e_tree_model_node_is_expanded((ETreeModel *)ml->table_model, node)) {
            data = e_tree_model_node_get_data((ETreeModel *)ml->table_model, node);
            if (data) {
                if (!strncmp(data, "uid:", 4)) {
                    info = camel_folder_get_message_info(ml->folder, data+4);
                    if (info) {
                        fprintf(out, "%s\n", info->message_id);
                    }
                } else {
                    fprintf(out, "%s\n", data);
                }
            }
        }
        if (child) {
            save_node_state(ml, out, child);
        }
        node = e_tree_model_node_get_next (E_TREE_MODEL (ml->table_model), node);
    }
}

static GHashTable *
load_tree_state(MessageList *ml)
{
    char *filename, linebuf[10240];
    GHashTable *result;
    FILE *in;
    int len;

    result = g_hash_table_new(g_str_hash, g_str_equal);
    filename = mail_config_folder_to_cachename(ml->folder, "treestate-");
    in = fopen(filename, "r");
    if (in) {
        while (fgets(linebuf, sizeof(linebuf), in) != NULL) {
            len = strlen(linebuf);
            if (len) {
                linebuf[len-1] = 0;
                g_hash_table_insert(result, g_strdup(linebuf), (void *)1);
            }
        }
        fclose(in);
    }
    g_free(filename);
    return result;
}

/* save tree info */
static void
save_tree_state(MessageList *ml)
{
    char *filename;
    ETreePath *node;
    ETreePath *child;
    FILE *out;

    filename = mail_config_folder_to_cachename(ml->folder, "treestate-");
    out = fopen(filename, "w");
    if (out) {
        node = e_tree_model_get_root((ETreeModel *)ml->table_model);
        child = e_tree_model_node_get_first_child ((ETreeModel *)ml->table_model, node);
        if (node && child) {
            save_node_state(ml, out, child);
        }
        fclose(out);
    }
    g_free(filename);
}

static void
free_node_state(void *key, void *value, void *data)
{
    g_free(key);
}

static void
free_tree_state(GHashTable *expanded_nodes)
{
    g_hash_table_foreach(expanded_nodes, free_node_state, 0);
    g_hash_table_destroy(expanded_nodes);
}

/* only call if we have a tree model */
/* builds the tree structure */
static void build_subtree (MessageList *ml, ETreePath *parent, struct _container *c, int *row, GHashTable *);

static void
build_tree (MessageList *ml, struct _container *c)
{
    int row = 0;
    GHashTable *expanded_nodes;

    clear_tree (ml);
    expanded_nodes = load_tree_state(ml);
    build_subtree (ml, ml->tree_root, c, &row, expanded_nodes);
    free_tree_state(expanded_nodes);
}

static void
build_subtree (MessageList *ml, ETreePath *parent, struct _container *c, int *row, GHashTable *expanded_nodes)
{
    ETreeModel *tree = E_TREE_MODEL (ml->table_model);
    ETreePath *node;
    char *id;
    int expanded = FALSE;   /* just removes a silly warning */

    while (c) {
        if (c->message) {
            id = g_strdup_printf("uid:%s", c->message->uid);
            g_hash_table_insert(ml->uid_rowmap, g_strdup (c->message->uid), GINT_TO_POINTER (*row));
            if (c->child) {
                if (c->message && c->message->message_id)
                    expanded = !g_hash_table_lookup(expanded_nodes, c->message->message_id) != 0;
                else
                    expanded = TRUE;
            }
        } else {
            id = g_strdup_printf("subject:%s", c->root_subject);
            if (c->child) {
                expanded = !g_hash_table_lookup(expanded_nodes, id) != 0;
            }
        }
        node = e_tree_model_node_insert(tree, parent, 0, id);
        (*row) ++;
        if (c->child) {
            /* by default, open all trees */
            if (expanded)
                e_tree_model_node_set_expanded(tree, node, expanded);
            build_subtree(ml, node, c->child, row, expanded_nodes);
        }
        c = c->next;
    }
}

static gboolean
nuke_uids_cb (ETreeModel *model, ETreePath *node, gpointer data)
{
    g_free (e_tree_model_node_get_data (model, node));
    return FALSE;
}

static void
nuke_uids (GtkObject *o)
{
    ETreeModel *etm = E_TREE_MODEL (o);
    ETreePath *root = e_tree_model_get_root (etm);

    if (root)
        e_tree_model_node_traverse (etm, root,
                        nuke_uids_cb, NULL);
}

static void
build_flat (MessageList *ml, GPtrArray *uids)
{
    ETreeModel *tree = E_TREE_MODEL (ml->table_model);
    ETreePath *node;
    char *uid;
    int i;

    clear_tree (ml);
    for (i = 0; i < uids->len; i++) {
        uid = g_strdup_printf ("uid:%s", (char *)uids->pdata[i]);
        node = e_tree_model_node_insert (tree, ml->tree_root, i, uid);
        g_hash_table_insert (ml->uid_rowmap, g_strdup (uids->pdata[i]),
                     GINT_TO_POINTER (i));
    }
}

static void
main_folder_changed (CamelObject *o, gpointer event_data, gpointer user_data)
{
    MessageList *message_list = MESSAGE_LIST (user_data);

    mail_do_regenerate_messagelist (message_list, message_list->search);
}

static void
folder_changed (CamelObject *o, gpointer event_data, gpointer user_data)
{
    mail_op_forward_event (main_folder_changed, o, event_data, user_data);
}

static void
main_message_changed (CamelObject *o, gpointer uid, gpointer user_data)
{
    MessageList *message_list = MESSAGE_LIST (user_data);
    int row;

    row = GPOINTER_TO_INT (g_hash_table_lookup (message_list->uid_rowmap,
                            uid));
    if (row != -1)
        e_table_model_row_changed (message_list->table_model, row);

    g_free (uid);
}

static void
message_changed (CamelObject *o, gpointer event_data, gpointer user_data)
{
    /* Here we copy the data because our thread may free the copy that we would reference.
     * The other thread would be passed a uid parameter that pointed to freed data.
     * We copy it and free it in the handler. 
     */
    mail_op_forward_event (main_message_changed, o, g_strdup ((gchar *)event_data), user_data);
}

void
message_list_set_folder (MessageList *message_list, CamelFolder *camel_folder)
{
    CamelException ex;

    g_return_if_fail (message_list != NULL);
    g_return_if_fail (camel_folder != NULL);
    g_return_if_fail (IS_MESSAGE_LIST (message_list));
    g_return_if_fail (CAMEL_IS_FOLDER (camel_folder));
    g_return_if_fail (camel_folder_has_summary_capability (camel_folder));

    camel_exception_init (&ex);
    
    if (message_list->folder)
        camel_object_unref (CAMEL_OBJECT (message_list->folder));

    message_list->folder = camel_folder;

    /* build the etable suitable for this folder */
    message_list_setup_etable(message_list);

    camel_object_hook_event(CAMEL_OBJECT (camel_folder), "folder_changed",
               folder_changed, message_list);
    camel_object_hook_event(CAMEL_OBJECT (camel_folder), "message_changed",
               message_changed, message_list);

    camel_object_ref (CAMEL_OBJECT (camel_folder));

    /*gtk_idle_add (regen_message_list, message_list);*/
    /*folder_changed (CAMEL_OBJECT (camel_folder), 0, message_list);*/
    mail_do_regenerate_messagelist (message_list, message_list->search);
}

GtkWidget *
message_list_get_widget (MessageList *message_list)
{
    return message_list->etable;
}

E_MAKE_TYPE (message_list, "MessageList", MessageList, message_list_class_init, message_list_init, PARENT_TYPE);

static gboolean
on_cursor_change_idle (gpointer data)
{
    MessageList *message_list = data;

    select_msg (message_list, message_list->cursor_row);

    message_list->idle_id = 0;
    return FALSE;
}

static void
on_cursor_change_cmd (ETableScrolled *table, int row, gpointer user_data)
{
    MessageList *message_list;
    const char *uid;
    
    message_list = MESSAGE_LIST (user_data);
    
    message_list->cursor_row = row;
    uid = get_message_uid (message_list, row);
    message_list->cursor_uid = uid; /*NULL ok*/

    if (!message_list->idle_id) {
        message_list->idle_id =
            g_idle_add_full (G_PRIORITY_LOW, on_cursor_change_idle,
                     message_list, NULL);
    }
}

/* FIXME: this is all a kludge. */
static gint
idle_select_row (gpointer user_data)
{
    MessageList *ml = MESSAGE_LIST (user_data);

    message_list_select (ml, -1, MESSAGE_LIST_SELECT_NEXT,
                 0, CAMEL_MESSAGE_SEEN);
    return FALSE;
}

static void
select_row (ETableScrolled *table, gpointer user_data)
{
    MessageList *message_list = user_data;

    gtk_idle_add (idle_select_row, message_list);
}

void
vfolder_subject(GtkWidget *w, FolderBrowser *fb)
{
    vfolder_gui_add_from_message(fb->mail_display->current_message, AUTO_SUBJECT,
                     fb->uri);
}

void
vfolder_sender(GtkWidget *w, FolderBrowser *fb)
{
    vfolder_gui_add_from_message(fb->mail_display->current_message, AUTO_FROM,
                     fb->uri);
}

void
vfolder_recipient(GtkWidget *w, FolderBrowser *fb)
{
    vfolder_gui_add_from_message(fb->mail_display->current_message, AUTO_TO,
                     fb->uri);
}

void
filter_subject(GtkWidget *w, FolderBrowser *fb)
{
    filter_gui_add_from_message(fb->mail_display->current_message, AUTO_SUBJECT);
}

void
filter_sender(GtkWidget *w, FolderBrowser *fb)
{
    filter_gui_add_from_message(fb->mail_display->current_message, AUTO_FROM);
}

void
filter_recipient(GtkWidget *w, FolderBrowser *fb)
{
    filter_gui_add_from_message(fb->mail_display->current_message, AUTO_TO);
}

void
filter_mlist (GtkWidget *w, FolderBrowser *fb)
{
    char *name;
    char *header_value;
    const char *header_name;

    name = mail_mlist_magic_detect_list (fb->mail_display->current_message, &header_name, &header_value);
    if (name == NULL)
        return;

    filter_gui_add_for_mailing_list (fb->mail_display->current_message, name, header_name, header_value);

    g_free (name);
    g_free (header_value);
}

static gint
on_right_click (ETableScrolled *table, gint row, gint col, GdkEvent *event, MessageList *list)
{
    FolderBrowser *fb = list->parent_folder_browser;
    extern CamelFolder *drafts_folder;
    int enable_mask = 0;
    EPopupMenu menu[] = {
        { _("Open in New Window"),      NULL, GTK_SIGNAL_FUNC (view_msg),          0 },
        { _("Edit Message"),            NULL, GTK_SIGNAL_FUNC (edit_msg),          1 },
        { _("Print Message"),           NULL, GTK_SIGNAL_FUNC (print_msg),         0 },
        { "",                           NULL, GTK_SIGNAL_FUNC (NULL),              0 },
        { _("Reply to Sender"),         NULL, GTK_SIGNAL_FUNC (reply_to_sender),   0 },
        { _("Reply to All"),            NULL, GTK_SIGNAL_FUNC (reply_to_all),      0 },
        { _("Forward Message"),         NULL, GTK_SIGNAL_FUNC (forward_msg),       0 },
        { "",                           NULL, GTK_SIGNAL_FUNC (NULL),              0 },
        { _("Delete Message"),          NULL, GTK_SIGNAL_FUNC (delete_msg),        0 },
        { _("Move Message"),            NULL, GTK_SIGNAL_FUNC (move_msg),          0 },
        { _("Copy Message"),            NULL, GTK_SIGNAL_FUNC (copy_msg),          0 },
        { "",                           NULL, GTK_SIGNAL_FUNC (NULL),              0 },
        { _("VFolder on Subject"),      NULL, GTK_SIGNAL_FUNC (vfolder_subject),   2 },
        { _("VFolder on Sender"),       NULL, GTK_SIGNAL_FUNC (vfolder_sender),    2 },
        { _("VFolder on Recipients"),   NULL, GTK_SIGNAL_FUNC (vfolder_recipient), 2 },
        { "",                           NULL, GTK_SIGNAL_FUNC (NULL),              0 },
        { _("Filter on Subject"),       NULL, GTK_SIGNAL_FUNC (filter_subject),    2 },
        { _("Filter on Sender"),        NULL, GTK_SIGNAL_FUNC (filter_sender),     2 },
        { _("Filter on Recipients"),    NULL, GTK_SIGNAL_FUNC (filter_recipient),  2 },
        { _("Filter on Mailing List"),  NULL, GTK_SIGNAL_FUNC (filter_mlist),      6 },
        { NULL,                         NULL, NULL,                                0 }
    };
    int last_item;
    char *mailing_list_name;

    /* Evil Hack.  */

    last_item = (sizeof (menu) / sizeof (*menu)) - 2;

    if (fb->folder != drafts_folder)
        enable_mask |= 1;

    if (fb->mail_display->current_message == NULL) {
        enable_mask |= 2;
        mailing_list_name = NULL;
    } else {
        mailing_list_name = mail_mlist_magic_detect_list (fb->mail_display->current_message,
                                  NULL, NULL);
    }

    if (mailing_list_name == NULL) {
        enable_mask |= 4;
        menu[last_item].name = g_strdup (_("Filter on Mailing List"));
    } else {
        menu[last_item].name = g_strdup_printf (_("Filter on Mailing List (%s)"),
                            mailing_list_name);
    }

    e_popup_menu_run (menu, (GdkEventButton *)event, enable_mask, 0, fb);

    g_free (menu[last_item].name);
    
    return TRUE;
}

static gint
on_click (ETableScrolled *table, gint row, gint col, GdkEvent *event, MessageList *list)
{
    const char *uid;
    GPtrArray *uids;
    int flag;

    if (col == COL_MESSAGE_STATUS)
        flag = CAMEL_MESSAGE_SEEN;
    else if (col == COL_FLAGGED)
        flag = CAMEL_MESSAGE_FLAGGED;
    else
        return FALSE;

    uid = get_message_uid (list, row);
    if (!uid)
        return FALSE;

    uids = g_ptr_array_new ();
    g_ptr_array_add (uids, g_strdup (uid));
    mail_do_flag_messages (list->folder, uids, TRUE, flag, flag);

    if (flag == CAMEL_MESSAGE_SEEN && list->seen_id) {
        gtk_timeout_remove (list->seen_id);
        list->seen_id = 0;
    }

    return TRUE;
}

static void
on_double_click (ETableScrolled *table, gint row, MessageList *list)
{
    FolderBrowser *fb = list->parent_folder_browser;
    
    view_msg (NULL, fb);
}

struct message_list_foreach_data {
    MessageList *message_list;
    MessageListForeachFunc callback;
    gpointer user_data;
};

static void
mlfe_callback (int row, gpointer user_data)
{
    struct message_list_foreach_data *mlfe_data = user_data;
    const char *uid;

    uid = get_message_uid (mlfe_data->message_list, row);
    if (uid) {
        mlfe_data->callback (mlfe_data->message_list,
                     uid,
                     mlfe_data->user_data);
    }
}

void
message_list_foreach (MessageList *message_list,
              MessageListForeachFunc callback,
              gpointer user_data)
{
    struct message_list_foreach_data mlfe_data;

    mlfe_data.message_list = message_list;
    mlfe_data.callback = callback;
    mlfe_data.user_data = user_data;
    e_table_scrolled_selected_row_foreach (E_TABLE_SCROLLED (message_list->etable),
                           mlfe_callback, &mlfe_data);
}

void
message_list_toggle_threads (BonoboUIComponent           *component,
                 const char                  *path,
                 Bonobo_UIComponent_EventType type,
                 const char                  *state,
                 gpointer                     user_data)
{
    MessageList *ml = user_data;

    if (type != Bonobo_UIComponent_STATE_CHANGED)
        return;
    
    mail_config_set_thread_list (atoi (state));
    mail_do_regenerate_messagelist (ml, ml->search);
}

/* ** REGENERATE MESSAGELIST ********************************************** */

typedef struct regenerate_messagelist_input_s {
    MessageList *ml;
    char *search;
} regenerate_messagelist_input_t;

typedef struct regenerate_messagelist_data_s {
    GPtrArray *uids;
} regenerate_messagelist_data_t;

static gchar *describe_regenerate_messagelist (gpointer in_data, gboolean gerund);
static void setup_regenerate_messagelist   (gpointer in_data, gpointer op_data, CamelException *ex);
static void do_regenerate_messagelist      (gpointer in_data, gpointer op_data, CamelException *ex);
static void cleanup_regenerate_messagelist (gpointer in_data, gpointer op_data, CamelException *ex);

static gchar *describe_regenerate_messagelist (gpointer in_data, gboolean gerund)
{
    if (gerund)
        return g_strdup (_("Rebuilding message view"));
    else
        return g_strdup (_("Rebuild message view"));
}

static void setup_regenerate_messagelist (gpointer in_data, gpointer op_data, CamelException *ex)
{
    regenerate_messagelist_input_t *input = (regenerate_messagelist_input_t *) in_data;

    gtk_object_ref (GTK_OBJECT (input->ml));
    e_table_model_pre_change (input->ml->table_model);
}

static void do_regenerate_messagelist (gpointer in_data, gpointer op_data, CamelException *ex)
{
    regenerate_messagelist_input_t *input = (regenerate_messagelist_input_t *) in_data;
    regenerate_messagelist_data_t *data = (regenerate_messagelist_data_t *) op_data;

        if (input->ml->search) {
                g_free (input->ml->search);
                input->ml->search = NULL;
        }

        if (input->ml->uid_rowmap) {
                g_hash_table_foreach (input->ml->uid_rowmap,
                                      free_key, NULL);
                g_hash_table_destroy (input->ml->uid_rowmap);
        }
        input->ml->uid_rowmap = g_hash_table_new (g_str_hash, g_str_equal);

    mail_tool_camel_lock_up();

    if (input->search) {
        data->uids = camel_folder_search_by_expression (input->ml->folder,
                                input->search, ex);
        if (camel_exception_is_set (ex)) {
            mail_tool_camel_lock_down();
            return;
        }

        input->ml->search = g_strdup (input->search);
    } else
        data->uids = camel_folder_get_uids (input->ml->folder);

    mail_tool_camel_lock_down();
}

static void cleanup_regenerate_messagelist (gpointer in_data, gpointer op_data, CamelException *ex)
{
    regenerate_messagelist_input_t *input = (regenerate_messagelist_input_t *) in_data;
    regenerate_messagelist_data_t *data = (regenerate_messagelist_data_t *) op_data;

    ETreeModel *etm;

    etm = E_TREE_MODEL (input->ml->table_model);

    /* FIXME: free the old tree data */

    if (data->uids == NULL) { /*exception*/
        gtk_object_unref (GTK_OBJECT (input->ml));
        return;
    }

    if (mail_config_thread_list()) {
        mail_do_thread_messages (input->ml, data->uids, 
                     (gboolean) !(input->search),
                     build_tree);
    } else {
        build_flat (input->ml, data->uids);

        if (input->search) {
            camel_folder_search_free (input->ml->folder, data->uids);
        } else {
            camel_folder_free_uids (input->ml->folder, data->uids);
        }
    }

    e_table_model_changed (input->ml->table_model);
    select_row (NULL, input->ml);
    g_free (input->search);
    gtk_object_unref (GTK_OBJECT (input->ml));
}

static const mail_operation_spec op_regenerate_messagelist =
{
    describe_regenerate_messagelist,
    sizeof (regenerate_messagelist_data_t),
    setup_regenerate_messagelist,
    do_regenerate_messagelist,
    cleanup_regenerate_messagelist
};

void mail_do_regenerate_messagelist (MessageList *list, const gchar *search)
{
    regenerate_messagelist_input_t *input;

    /* This gets called on empty folder-browsers by the bonobo ui
     * callback for threaded view.
     */
    if (!list->folder)
        return;

    input = g_new (regenerate_messagelist_input_t, 1);
    input->ml = list;
    input->search = g_strdup (search);

    mail_operation_queue (&op_regenerate_messagelist, input, TRUE);
}

static void
go_to_message (MessageList *message_list,
           int model_row)
{
    ETableScrolled *table_scrolled;
    const CamelMessageInfo *info;
    int view_row;

    table_scrolled = E_TABLE_SCROLLED (message_list->etable);

    view_row = e_table_model_to_view_row (table_scrolled->table, model_row);
    info     = get_message_info (message_list, model_row);

    if (info != NULL) {
        e_table_scrolled_set_cursor_row (table_scrolled, view_row);
        mail_do_display_message (message_list, info->uid, mark_msg_seen);
    }
}

void
message_list_home (MessageList *message_list)
{
    g_return_if_fail (message_list != NULL);

    go_to_message (message_list, 0);
}

void
message_list_end (MessageList *message_list)
{
    ETableScrolled *table_scrolled;
    ETable *table;
    int num_rows;

    g_return_if_fail (message_list != NULL);

    table_scrolled = E_TABLE_SCROLLED (message_list->etable);
    table = table_scrolled->table;

    num_rows = e_table_model_row_count (table->model);
    if (num_rows == 0)
        return;

    go_to_message (message_list, num_rows - 1);
}