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/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/*
 * folder-browser.c: Folder browser top level component
 *
 * Author:
 *   Miguel de Icaza (miguel@kernel.org)
 *
 * (C) 2000, 2001 Ximian, Inc.
 */
#include <config.h>
#include <ctype.h>
#include <gnome.h>
#include "e-util/e-sexp.h"
#include "folder-browser.h"
#include "mail.h"
#include "mail-callbacks.h"
#include "mail-tools.h"
#include "message-list.h"
#include "mail-ops.h"
#include "mail-vfolder.h"
#include "mail-autofilter.h"
#include "mail-mlist-magic.h"
#include "mail-mt.h"

#include <gal/util/e-util.h>
#include <gal/widgets/e-unicode.h>
#include <gal/e-paned/e-vpaned.h>

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

#include "mail-search-dialogue.h"

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

#include <gal/widgets/e-popup-menu.h>

#define d(x) x

#define PARENT_TYPE (gtk_table_get_type ())

static void fb_resize_cb (GtkWidget *w, GtkAllocation *a);

static GtkObjectClass *folder_browser_parent_class;

static void
folder_browser_destroy (GtkObject *object)
{
    FolderBrowser *folder_browser;
    CORBA_Environment ev;
    
    folder_browser = FOLDER_BROWSER (object);
    
    CORBA_exception_init (&ev);
    
    if (folder_browser->search_full)
        gtk_object_unref (GTK_OBJECT (folder_browser->search_full));
    
    if (folder_browser->shell != CORBA_OBJECT_NIL)
        CORBA_Object_release (folder_browser->shell, &ev);
    
    g_free (folder_browser->uri);
    
    if (folder_browser->folder) {
        mail_sync_folder (folder_browser->folder, NULL, NULL);
        camel_object_unref (CAMEL_OBJECT (folder_browser->folder));
    }
    
    if (folder_browser->message_list)
        gtk_widget_destroy (GTK_WIDGET (folder_browser->message_list));
    
    if (folder_browser->mail_display)
        gtk_widget_destroy (GTK_WIDGET (folder_browser->mail_display));
    
    CORBA_exception_free (&ev);
    
    folder_browser_parent_class->destroy (object);
}

static void
folder_browser_class_init (GtkObjectClass *object_class)
{
    object_class->destroy = folder_browser_destroy;
    
    folder_browser_parent_class = gtk_type_class (PARENT_TYPE);
}

/*
 * static gboolean
 * folder_browser_load_folder (FolderBrowser *fb, const char *name)
 * {
 *  CamelFolder *new_folder;
 * 
 *  new_folder = mail_tool_uri_to_folder_noex (name);
 * 
 *  if (!new_folder)
 *      return FALSE;
 * 
 *  if (fb->folder)
 *      camel_object_unref (CAMEL_OBJECT (fb->folder));
 *  fb->folder = new_folder;
 *  message_list_set_folder (fb->message_list, new_folder);
 *  return TRUE;
 * }
 */

static void
update_unread_count_main(CamelObject *object, gpointer event_data, gpointer user_data)
{
    CamelFolder *folder = (CamelFolder *)object;
    FolderBrowser *fb = user_data;
    EvolutionStorage *storage;
    char *name;

    storage = mail_lookup_storage (folder->parent_store);

    if (fb->unread_count == 0)
        name = g_strdup (camel_folder_get_name (folder));
    else
        name = g_strdup_printf ("%s (%d)", camel_folder_get_name (folder), fb->unread_count);

    evolution_storage_update_folder_by_uri (storage, fb->uri, name, fb->unread_count != 0);
    g_free (name);
    gtk_object_unref (GTK_OBJECT (storage));
}

static void
update_unread_count(CamelObject *object, gpointer event_data, gpointer user_data)
{
    CamelFolder *folder = (CamelFolder *)object;
    FolderBrowser *fb = user_data;
    int unread;

    unread = camel_folder_get_unread_message_count (folder);
    if (unread == fb->unread_count)
        return;
    fb->unread_count = unread;
    mail_proxy_event (update_unread_count_main, object, event_data, user_data);
}

static void
got_folder(char *uri, CamelFolder *folder, void *data)
{
    FolderBrowser *fb = data;
    EvolutionStorage *storage;

    printf("got folder '%s' = %p\n", uri, folder);

    if (fb->folder == folder)
        goto done;

    if (fb->folder)
        camel_object_unref((CamelObject *)fb->folder);
    g_free(fb->uri);
    fb->uri = g_strdup(uri);
    fb->folder = folder;

    if (folder == NULL)
        goto done;

    camel_object_ref((CamelObject *)folder);

    if ((storage = mail_lookup_storage (folder->parent_store))) {
        gtk_object_unref (GTK_OBJECT (storage));
        fb->unread_count = camel_folder_get_unread_message_count (folder);
        update_unread_count_main ((CamelObject *)folder, NULL, fb);
        camel_object_hook_event ((CamelObject *)folder, "message_changed",
                     update_unread_count, fb);
        camel_object_hook_event ((CamelObject *)folder, "folder_changed",
                     update_unread_count, fb);
    }

    gtk_widget_set_sensitive(GTK_WIDGET(fb->search), camel_folder_has_search_capability(folder));
    message_list_set_threaded(fb->message_list, mail_config_get_thread_list());
    message_list_set_folder(fb->message_list, folder);
done:
    gtk_object_unref((GtkObject *)fb);

    /* Sigh, i dont like this (it can be set in reconfigure folder),
       but its just easier right now to do it this way */
    fb->reconfigure = FALSE;
}

gboolean
folder_browser_set_uri (FolderBrowser *folder_browser, const char *uri)
{
    if (uri && *uri) {
        gtk_object_ref((GtkObject *)folder_browser);
        mail_get_folder(uri, got_folder, folder_browser);
    } else {
        /* Sigh, i dont like this (it can be set in reconfigure folder),
           but its just easier right now to do it this way */
        folder_browser->reconfigure = FALSE;
    }

    return TRUE;
}

void
folder_browser_set_message_preview (FolderBrowser *folder_browser, gboolean show_message_preview)
{
    if (folder_browser->preview_shown == show_message_preview)
        return;

    g_warning ("FIXME: implement me");
}

enum {
    ESB_SAVE,
};

static ESearchBarItem folder_browser_search_menu_items[] = {
    E_FILTERBAR_RESET,
    E_FILTERBAR_SAVE,
    { N_("Store search as vFolder"),  ESB_SAVE     },
    { NULL,                           -1           }
};

static void
folder_browser_search_menu_activated (ESearchBar *esb, int id, FolderBrowser *fb)
{
    EFilterBar *efb = (EFilterBar *)esb;

    printf("menyu activated\n");

    switch (id) {
    case ESB_SAVE:
        printf("Save vfolder\n");
        if (efb->current_query) {
            FilterRule *rule = vfolder_clone_rule(efb->current_query);          

            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)
{
    GList *partl;

    /* 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);
        } else if(!strcmp(part->name, "sender")) {
            FilterInput *input = (FilterInput *)filter_part_find_element(part, "sender");
            if (input)
                filter_input_set_value(input, query);
        }
        
        partl = partl->next;
    }
    printf("configuring search for search string '%s', rule is '%s'\n", query, rule->name);
}

static void
folder_browser_search_query_changed (ESearchBar *esb, FolderBrowser *fb)
{
    char *search_word;

    printf("query changed\n");

    gtk_object_get (GTK_OBJECT (esb),
            "query", &search_word,
            NULL);

    message_list_set_search (fb->message_list, search_word);

    printf("query is %s\n", search_word);
    g_free(search_word);
    return;
}

void
folder_browser_toggle_threads (BonoboUIComponent           *component,
                   const char                  *path,
                   Bonobo_UIComponent_EventType type,
                   const char                  *state,
                   gpointer                     user_data)
{
    FolderBrowser *fb = user_data;
    
    if (type != Bonobo_UIComponent_STATE_CHANGED)
        return;
    
    mail_config_set_thread_list (atoi (state));
    message_list_set_threaded (fb->message_list, atoi (state));
}

void
folder_browser_toggle_view_source (BonoboUIComponent           *component,
                   const char                  *path,
                   Bonobo_UIComponent_EventType type,
                   const char                  *state,
                   gpointer                     user_data)
{
    FolderBrowser *fb = user_data;
    
    if (type != Bonobo_UIComponent_STATE_CHANGED)
        return;
    
    mail_config_set_view_source (atoi (state));
    mail_display_redisplay (fb->mail_display, TRUE);
}

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
vfolder_mlist (GtkWidget *w, FolderBrowser *fb)
{
    char *name;

    g_return_if_fail (fb->mail_display->current_message != NULL);

    name = header_raw_check_mailing_list(&((CamelMimePart *)fb->mail_display->current_message)->headers);
    if (name) {
        vfolder_gui_add_from_mlist(fb->mail_display->current_message, name, fb->uri);
        g_free(name);
    }
}

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;

    g_return_if_fail (fb->mail_display->current_message != NULL);

    name = header_raw_check_mailing_list(&((CamelMimePart *)fb->mail_display->current_message)->headers);
    if (name) {
        filter_gui_add_from_mlist(name);
        g_free(name);
    }
}

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;
        }
    }
}

/* handle context menu over message-list */
static gint
on_right_click (ETable *table, gint row, gint col, GdkEvent *event, FolderBrowser *fb)
{
    extern CamelFolder *drafts_folder;
    CamelMessageInfo *info;
    GPtrArray *uids;
    int enable_mask = 0;
    int i;
    char *mailing_list_name = NULL;
    char *subject_match = NULL, *from_match = NULL;

#define MLIST_VFOLDER (3)
#define MLIST_FILTER (8)
    EPopupMenu filter_menu[] = {
        { _("VFolder on Subject"),         NULL, GTK_SIGNAL_FUNC (vfolder_subject),   NULL,  2 },
        { _("VFolder on Sender"),          NULL, GTK_SIGNAL_FUNC (vfolder_sender),    NULL,  2 },
        { _("VFolder on Recipients"),      NULL, GTK_SIGNAL_FUNC (vfolder_recipient), NULL,  2 },
        { _("VFolder on Mailing List"),    NULL, GTK_SIGNAL_FUNC (vfolder_mlist),     NULL,  66 },
        { "",                              NULL, GTK_SIGNAL_FUNC (NULL),              NULL,  0 },
        { _("Filter on Subject"),          NULL, GTK_SIGNAL_FUNC (filter_subject),    NULL,  2 },
        { _("Filter on Sender"),           NULL, GTK_SIGNAL_FUNC (filter_sender),     NULL,  2 },
        { _("Filter on Recipients"),       NULL, GTK_SIGNAL_FUNC (filter_recipient),  NULL,  2 },
        { _("Filter on Mailing List"),     NULL, GTK_SIGNAL_FUNC (filter_mlist),      NULL, 66 },
        { NULL,                            NULL, NULL,                                NULL,  0 }
    };


    EPopupMenu menu[] = {
        { _("Open"),                       NULL, GTK_SIGNAL_FUNC (view_msg),          NULL,  0 },
        { _("Edit"),                       NULL, GTK_SIGNAL_FUNC (edit_msg),          NULL,  1 },
        { _("Save As..."),                 NULL, GTK_SIGNAL_FUNC (save_msg),          NULL,  0 },
        { _("Print"),                      NULL, GTK_SIGNAL_FUNC (print_msg),         NULL,  0 },
        { "",                              NULL, GTK_SIGNAL_FUNC (NULL),              NULL,  0 },
        { _("Reply to Sender"),            NULL, GTK_SIGNAL_FUNC (reply_to_sender),   NULL,  0 },
        { _("Reply to All"),               NULL, GTK_SIGNAL_FUNC (reply_to_all),      NULL,  0 },
        { _("Forward"),                    NULL, GTK_SIGNAL_FUNC (forward_attached),  NULL,  0 },
        { _("Forward inline"),             NULL, GTK_SIGNAL_FUNC (forward_inlined),   NULL,  0 },
        { "",                              NULL, GTK_SIGNAL_FUNC (NULL),              NULL,  0 },
        { _("Mark as Read"),               NULL, GTK_SIGNAL_FUNC (mark_as_seen),      NULL,  4 },
        { _("Mark as Unread"),             NULL, GTK_SIGNAL_FUNC (mark_as_unseen),    NULL,  8 },
        { "",                              NULL, GTK_SIGNAL_FUNC (NULL),              NULL,  0 },
        { _("Move to Folder..."),          NULL, GTK_SIGNAL_FUNC (move_msg),          NULL,  0 },
        { _("Copy to Folder..."),          NULL, GTK_SIGNAL_FUNC (copy_msg),          NULL,  0 },
        { _("Delete"),                     NULL, GTK_SIGNAL_FUNC (delete_msg),        NULL, 16 },
        { _("Undelete"),                   NULL, GTK_SIGNAL_FUNC (undelete_msg),      NULL, 32 },
        { "",                              NULL, GTK_SIGNAL_FUNC (NULL),              NULL,  0 },
        /*{ _("Add Sender to Address Book"), NULL, GTK_SIGNAL_FUNC (addrbook_sender),   NULL,  0 },
          { "",                              NULL, GTK_SIGNAL_FUNC (NULL),              NULL,  0 },*/
        { _("Apply Filters"),              NULL, GTK_SIGNAL_FUNC (apply_filters),     NULL,  0 },
        { "",                              NULL, GTK_SIGNAL_FUNC (NULL),              NULL,  0 },
        { _("Create Rule From Message"),   NULL, GTK_SIGNAL_FUNC (NULL),       filter_menu,  2 },
        { NULL,                            NULL, NULL,                                NULL,  0 }
    };
    
    if (fb->reconfigure) {
        enable_mask = 0;
        goto display_menu;
    }
    
    if (fb->folder != drafts_folder)
        enable_mask |= 1;
    
    if (fb->mail_display->current_message == NULL) {
        enable_mask |= 2;
        mailing_list_name = NULL;
    } else {
        const char *subject, *real, *addr;
        const CamelInternetAddress *from;

        mailing_list_name = header_raw_check_mailing_list(&((CamelMimePart *)fb->mail_display->current_message)->headers);

        if ((subject = camel_mime_message_get_subject(fb->mail_display->current_message))
            && (subject = strip_re(subject))
            && subject[0])
            subject_match = g_strdup(subject);

        if ((from = camel_mime_message_get_from(fb->mail_display->current_message))
            && camel_internet_address_get(from, 0, &real, &addr)
            && addr && addr[0])
            from_match = g_strdup(addr);
    }
    
    /* 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;

        for (i = 0; i < uids->len; i++) {
            info = camel_folder_get_message_info (fb->folder, uids->pdata[i]);
            if (info == NULL)
                continue;

            if (info->flags & CAMEL_MESSAGE_SEEN)
                have_seen = TRUE;
            else
                have_unseen = TRUE;
            
            if (info->flags & CAMEL_MESSAGE_DELETED)
                have_deleted = TRUE;
            else
                have_undeleted = TRUE;
            
            camel_folder_free_message_info(fb->folder, info);

            if (have_seen && have_unseen && have_deleted && have_undeleted)
                break;
        }

        if (!have_unseen)
            enable_mask |= 4;
        if (!have_seen)
            enable_mask |= 8;
        
        if (!have_undeleted)
            enable_mask |= 16;
        if (!have_deleted)
            enable_mask |= 32;
    }

    /* free uids */
    for (i = 0; i < uids->len; i++)
        g_free (uids->pdata[i]);
    g_ptr_array_free (uids, TRUE);

display_menu:
    
    /* generate the "Filter on Mailing List menu item name */
    if (mailing_list_name == NULL) {
        enable_mask |= 64;
        filter_menu[MLIST_FILTER].name = g_strdup (_("Filter on Mailing List"));
        filter_menu[MLIST_VFOLDER].name = g_strdup (_("VFolder on Mailing List"));
    } else {
        filter_menu[MLIST_FILTER].name = g_strdup_printf (_("Filter on Mailing List (%s)"), mailing_list_name);
        filter_menu[MLIST_VFOLDER].name = g_strdup_printf (_("VFolder on Mailing List (%s)"), mailing_list_name);
        g_free(mailing_list_name);
    }

    e_popup_menu_run (menu, event, enable_mask, 0, fb);
    
    g_free(filter_menu[MLIST_FILTER].name);
    g_free(filter_menu[MLIST_VFOLDER].name);

    return TRUE;
}

static int
etable_key (ETable *table, int row, int col, GdkEvent *ev, FolderBrowser *fb)
{
    if ((ev->key.state & !(GDK_SHIFT_MASK | GDK_LOCK_MASK)) != 0)
        return FALSE;

    switch (ev->key.keyval) {
    case GDK_space:
    case GDK_BackSpace:
    {
        GtkAdjustment *vadj;
        gfloat page_size;

        vadj = e_scroll_frame_get_vadjustment (fb->mail_display->scroll);
        page_size = vadj->page_size - vadj->step_increment;

        if (ev->key.keyval == GDK_BackSpace) {
            if (vadj->value > vadj->lower + page_size)
                vadj->value -= page_size;
            else
                vadj->value = vadj->lower;
        } else {
            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);
        return TRUE;
    }
    
    case GDK_Delete:
    case GDK_KP_Delete:
        delete_msg (NULL, fb);
        message_list_select (fb->message_list, row,
                     MESSAGE_LIST_SELECT_NEXT,
                     0, CAMEL_MESSAGE_DELETED);
        return TRUE;

    case 'n':
    case 'N':
        message_list_select (fb->message_list, row,
                     MESSAGE_LIST_SELECT_NEXT,
                     0, CAMEL_MESSAGE_SEEN);
        return TRUE;

    case 'p':
    case 'P':
        message_list_select (fb->message_list, row,
                     MESSAGE_LIST_SELECT_PREVIOUS,
                     0, CAMEL_MESSAGE_SEEN);
        return TRUE;

    case GDK_Menu:
        on_right_click (table, row, col, ev, fb);
        return TRUE;

    default:
        return FALSE;
    }

    return FALSE;
}

static void
on_double_click (ETable *table, gint row, 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;

    view_msg (NULL, fb);
}

static void
folder_browser_gui_init (FolderBrowser *fb)
{
    /* The panned container */
    fb->vpaned = e_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 */
    {
        RuleContext *rc = (RuleContext *)rule_context_new ();
        char *userrules = g_strdup_printf("%s/searches.xml", evolution_dir);
        /* we reuse the vfolder types here, they should match */
        char *systemrules = g_strdup_printf("%s/evolution/vfoldertypes.xml", EVOLUTION_DATADIR);

        rule_context_add_part_set((RuleContext *)rc, "partset", filter_part_get_type(),
                      rule_context_add_part, rule_context_next_part);
        
        rule_context_add_rule_set((RuleContext *)rc, "ruleset", filter_rule_get_type(),
                      rule_context_add_rule, rule_context_next_rule);
    
        fb->search = e_filter_bar_new(rc, systemrules, userrules, folder_browser_config_search, fb);
        e_search_bar_set_menu((ESearchBar *)fb->search, folder_browser_search_menu_items);
        /*e_search_bar_set_option((ESearchBar *)fb->search, folder_browser_search_option_items);*/
        g_free(userrules);
        g_free(systemrules);
        gtk_object_unref((GtkObject *)rc);
    }

    gtk_widget_show (GTK_WIDGET (fb->search));
    
    gtk_signal_connect (GTK_OBJECT (fb->search), "query_changed",
                GTK_SIGNAL_FUNC (folder_browser_search_query_changed), fb);
    gtk_signal_connect (GTK_OBJECT (fb->search), "menu_activated",
                GTK_SIGNAL_FUNC (folder_browser_search_menu_activated), fb);
    
    gtk_table_attach (GTK_TABLE (fb), GTK_WIDGET (fb->search),
              0, 1, 0, 1,
              GTK_FILL | GTK_EXPAND,
              0,
              0, 0);
    
    e_paned_add1 (E_PANED (fb->vpaned), GTK_WIDGET (fb->message_list));
    gtk_widget_show (GTK_WIDGET (fb->message_list));
    
    gtk_signal_connect (GTK_OBJECT (fb->message_list), "size_allocate",
                        GTK_SIGNAL_FUNC (fb_resize_cb), NULL);
    
    e_paned_add2 (E_PANED (fb->vpaned), GTK_WIDGET (fb->mail_display));
    e_paned_set_position (E_PANED (fb->vpaned), mail_config_get_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 = data;

    if (fb->new_uid && fb->loaded_uid
        && strcmp(fb->new_uid, fb->loaded_uid) == 0) {
        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, char *uid, CamelMimeMessage *msg, void *data)
{
    FolderBrowser *fb = data;
    int timeout = mail_config_get_mark_as_seen_timeout ();

    if (folder != fb->folder)
        return;

    mail_display_set_message(fb->mail_display, (CamelMedium *)msg);

    /* 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;

    /* 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) {
        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 ("selecting uid %s (delayed)\n", fb->new_uid));

    /* keep polling if we are busy */
    if (fb->reconfigure)
        return TRUE;

    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);
        }
    }

    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 ("selecting uid %s (direct)\n", uid));

    if (fb->loading_id != 0)
        gtk_timeout_remove(fb->loading_id);

    g_free(fb->new_uid);
    fb->new_uid = g_strdup(uid);
    fb->loading_id = gtk_timeout_add(100, (GtkFunction)do_message_selected, fb);
}

static void
folder_browser_init (GtkObject *object)
{
}

static void
my_folder_browser_init (GtkObject *object)
{
    FolderBrowser *fb = FOLDER_BROWSER (object);

    /*
     * 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 ();

    e_scroll_frame_set_policy(E_SCROLL_FRAME(fb->message_list),
                  GTK_POLICY_NEVER,
                  GTK_POLICY_ALWAYS);
    
    gtk_signal_connect (GTK_OBJECT (fb->message_list->table),
                "key_press", GTK_SIGNAL_FUNC (etable_key), fb);

    gtk_signal_connect (GTK_OBJECT (fb->message_list->table),
                "right_click", GTK_SIGNAL_FUNC (on_right_click), fb);

    gtk_signal_connect (GTK_OBJECT (fb->message_list->table),
                "double_click", GTK_SIGNAL_FUNC (on_double_click), fb);

    gtk_signal_connect (GTK_OBJECT(fb->message_list), "message_selected",
                on_message_selected, fb);

    folder_browser_gui_init (fb);
}

GtkWidget *
folder_browser_new (const GNOME_Evolution_Shell shell)
{
    CORBA_Environment ev;
    FolderBrowser *folder_browser;

    CORBA_exception_init (&ev);

    folder_browser = gtk_type_new (folder_browser_get_type ());

    my_folder_browser_init (GTK_OBJECT (folder_browser));
    folder_browser->uri = NULL;

    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);

    return GTK_WIDGET (folder_browser);
}


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

static void fb_resize_cb (GtkWidget *w, GtkAllocation *a)
{
    mail_config_set_paned_size (a->height);
}