path: root/my-evolution/e-summary-mail.c

/* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 8; tab-width: 8 -*- */
/* e-summary-mail.c
 *
 * Copyright (C) 2001, 2002, 2003 Ximian, Inc.
 *
 * 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.
 *
 * Author: Iain Holmes  <iain@ximian.com>
 */

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

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

#include <libgnome/gnome-i18n.h>
#include <libgnome/gnome-util.h> /* gnome_util_prepend_user_home */

#include <gtk/gtksignal.h>

#include <bonobo/bonobo-exception.h>
#include <bonobo/bonobo-listener.h>
#include <bonobo/bonobo-property-bag-client.h>

#include <Evolution.h>
#include <evolution-storage-listener.h>

#include <string.h>

#include "Mailer.h"
#include "e-summary.h"
#include "e-summary-mail.h"
#include "e-summary-table.h"
#include "e-summary-preferences.h"

#include "e-util/e-path.h"

#define MAIL_IID "OAFIID:GNOME_Evolution_FolderInfo"

typedef struct _FolderStore {
    GNOME_Evolution_Shell shell;
    GNOME_Evolution_FolderInfo folder_info;
    GNOME_Evolution_StorageRegistry registry;
    BonoboListener *registry_listener;
    BonoboListener *listener;
    EvolutionStorageListener *storage_listener;
    
    GSList *storage_list;

    GHashTable *path_to_folder;
    GHashTable *physical_uri_to_folder;

    GList *shown;
} FolderStore;

struct _ESummaryMail {
    char *html;
};

typedef struct _StorageInfo {
    char *name;
    char *toplevel;
    
    GNOME_Evolution_Storage storage;
    EvolutionStorageListener *listener;

    GList *folders;
} StorageInfo;

typedef struct _ESummaryMailFolder {
    char *path;
    char *uri;
    char *physical_uri;
    char *display_name;

    int count;
    int unread;

    gboolean init; /* Has this folder been initialised? */
    StorageInfo *si;
} ESummaryMailFolder;

static FolderStore *folder_store = NULL;


static char *
make_pretty_foldername (ESummary *summary,
            const ESummaryMailFolder *folder)
{
    GString *pretty_path;
    const char *p, *previous_p;
    char *retval;

    if (! summary->preferences->show_full_path)
        return g_strdup (folder->display_name);

    g_assert (folder->path[0] == '/');

    pretty_path = g_string_new ("");

    previous_p = folder->path;
    while (previous_p != NULL) {
        const ESummaryMailFolder *ancestor_folder;
        char *path;

        g_string_append (pretty_path, "/");

        p = strchr (previous_p + 1, '/');

        if (p == NULL)
            path = g_strdup (folder->path);
        else
            path = g_strndup (folder->path, p - folder->path);

        ancestor_folder = g_hash_table_lookup (folder_store->path_to_folder, path);

        if (ancestor_folder != NULL) {
            g_string_append (pretty_path, ancestor_folder->display_name);
        } else {
            char *path_element;

            if (p == NULL)
                path_element = g_strdup (previous_p + 1);
            else
                path_element = g_strndup (previous_p + 1, p - (previous_p + 1));

            g_string_append (pretty_path, path_element);
            g_free (path_element);
        }

        g_free (path);

        previous_p = p;
    }

    retval = pretty_path->str;
    g_string_free (pretty_path, FALSE);

    return retval;
}

static void
folder_gen_html (ESummary *summary,
         ESummaryMailFolder *folder,
         GString *string)
{
    char *str, *pretty_name;
    
    pretty_name = make_pretty_foldername (summary, folder);
    str = g_strdup_printf ("<tr><td><a href=\"%s\">"
                   "<pre>%s</pre></a></td><td align=\"Left\">"
                   "<pre>%d/%d</pre>"
                   "</td></tr>", 
                   folder->uri, pretty_name,
                   folder->unread, folder->count);
    g_string_append (string, str);
    g_free (pretty_name);
    g_free (str);
}

static void
e_summary_mail_generate_html (ESummary *summary)
{
    ESummaryMail *mail;
    GString *string;
    GList *p;
    char *old;

    g_return_if_fail (summary != NULL);
    g_return_if_fail (IS_E_SUMMARY (summary));

    mail = summary->mail;
    string = g_string_new ("<dl><dt><img src=\"myevo-mail-summary.png\" "
                           "align=\"middle\" alt=\"\" width=\"48\" "
                           "height=\"48\"> <b><a href=\"evolution:/local/Inbox\">");
    g_string_append (string, _("Mail summary"));
    g_string_append (string, "</a></b></dt><dd><table numcols=\"2\" width=\"100%\">");
    
    for (p = folder_store->shown; p; p = p->next) {
        ESummaryMailFolder *mail_folder = p->data;

        folder_gen_html (summary, mail_folder, string);
    }

    g_string_append (string, "</table></dd></dl>");

    old = mail->html;
    mail->html = string->str;

    g_free (old);

    g_string_free (string, FALSE);
}

const char *
e_summary_mail_get_html (ESummary *summary)
{
    /* Only regenerate HTML when it's needed */
    e_summary_mail_generate_html (summary);

    if (summary->mail == NULL) {
        return NULL;
    }
    
    return summary->mail->html;
}

static void
e_summary_mail_get_info (const char *uri)
{
    CORBA_Environment ev;

    g_return_if_fail (folder_store->folder_info != CORBA_OBJECT_NIL);

    CORBA_exception_init (&ev);
    GNOME_Evolution_FolderInfo_getInfo (folder_store->folder_info, uri ? uri : "",
                        BONOBO_OBJREF (folder_store->listener), &ev);
    if (BONOBO_EX (&ev)) {
        g_warning ("Error getting info for %s:\n%s", uri,
               CORBA_exception_id (&ev));
        CORBA_exception_free (&ev);
        return;
    }
    
    CORBA_exception_free (&ev);
    return;
}

static gboolean
e_summary_mail_idle_get_info (gpointer user_data)
{
    char *uri = user_data;

    e_summary_mail_get_info (uri);
    g_free (uri);
    return FALSE;
}

static void
new_folder_cb (EvolutionStorageListener *listener,
           const char *path,
           const GNOME_Evolution_Folder *folder,
           StorageInfo *si)
{
    ESummaryPrefs *global_preferences;
    ESummaryMailFolder *mail_folder;
    GSList *p;

    if (strcmp (folder->type, "mail") != 0)
        return;

    if (strncmp (folder->evolutionUri, "evolution:", 10) != 0)
        return;

    mail_folder = g_new (ESummaryMailFolder, 1);
    mail_folder->si = si;
    mail_folder->uri = g_strdup (folder->evolutionUri);
    mail_folder->physical_uri = g_strdup (folder->physicalUri);
    mail_folder->path = g_strdup (path);
    mail_folder->display_name = g_strdup (folder->displayName);
    mail_folder->count = -1;
    mail_folder->unread = -1;
    mail_folder->init = FALSE;

    g_hash_table_insert (folder_store->path_to_folder, mail_folder->path, mail_folder);
    g_hash_table_insert (folder_store->physical_uri_to_folder, mail_folder->physical_uri, mail_folder);

    si->folders = g_list_prepend (si->folders, mail_folder);

    global_preferences = e_summary_preferences_get_global ();
    for (p = global_preferences->display_folders; p; p = p->next) {
        ESummaryPrefsFolder *f = p->data;
        
        if (strcmp (f->physical_uri, folder->physicalUri) == 0) {
            folder_store->shown = g_list_append (folder_store->shown, mail_folder);
            g_idle_add (e_summary_mail_idle_get_info,
                    g_strdup (mail_folder->physical_uri));
        }
    }
}

static void
update_folder_cb (EvolutionStorageListener *listener,
          const char *path,
          int unread_count,
          StorageInfo *si)
{
    ESummaryMailFolder *mail_folder;
    GList *p;

    mail_folder = g_hash_table_lookup (folder_store->path_to_folder, path);
    if (mail_folder == NULL) {
        return;
    }

    for (p = folder_store->shown; p; p = p->next) {
        if (p->data == mail_folder) {
            g_idle_add (e_summary_mail_idle_get_info,
                    g_strdup (mail_folder->physical_uri));
            return;
        }
    }
}

static void
remove_folder_cb (EvolutionStorageListener *listener,
          const char *path,
          StorageInfo *si)
{
    ESummaryMailFolder *mail_folder;
    GList *p;

    mail_folder = g_hash_table_lookup (folder_store->path_to_folder, path);
    if (mail_folder == NULL) {
        return;
    }

    /* Check if we're displaying it, because we can't display it if it
       doesn't exist :) */
    for (p = folder_store->shown; p; p = p->next) {
        if (p->data == mail_folder) {
            folder_store->shown = g_list_remove_link (folder_store->shown, p);
            g_list_free (p);
        }
    }

    g_hash_table_remove (folder_store->path_to_folder, path);
    g_free (mail_folder->path);
    g_free (mail_folder->uri);
    g_free (mail_folder->physical_uri);
    g_free (mail_folder->display_name);
    g_free (mail_folder);
}

static void
mail_change_notify (BonoboListener *listener,
            const char *name,
            const BonoboArg *arg,
            CORBA_Environment *ev,
            gpointer data)
{
    GNOME_Evolution_FolderInfo_MessageCount *count;
    ESummaryMailFolder *folder;
    ESummaryPrefs *global_preferences;
    GSList *p;

    count = arg->_value;
    folder = g_hash_table_lookup (folder_store->physical_uri_to_folder, count->path);

    if (folder == NULL) {
        return;
    }

    folder->count = count->count;
    folder->unread = count->unread;
    folder->init = TRUE;

    /* Are we displaying this folder? */
    global_preferences = e_summary_preferences_get_global ();
    for (p = global_preferences->display_folders; p; p = p->next) {
        ESummaryPrefsFolder *f = p->data;
        if (strcmp (f->physical_uri, folder->physical_uri) == 0) {
            e_summary_redraw_all (); /* All summaries should be redrawn, not just this one */
            return;
        }
    }
}

static void
e_summary_mail_protocol (ESummary *summary,
             const char *uri,
             void *closure)
{
}

    
    
static gboolean
e_summary_folder_register_storage (const char *name,
                   GNOME_Evolution_Storage corba_storage)
{
    GNOME_Evolution_StorageListener corba_listener;
    StorageInfo *si;
    CORBA_Environment ev;

    si = g_new (StorageInfo, 1);
    si->name = g_strdup (name);
    si->toplevel = NULL;
    si->storage = corba_storage;
    si->listener = evolution_storage_listener_new ();
    si->folders = NULL;

    folder_store->storage_list = g_slist_prepend (folder_store->storage_list, si);
    
    g_signal_connect (si->listener, "new-folder", G_CALLBACK (new_folder_cb), si);
    g_signal_connect (si->listener, "removed-folder", G_CALLBACK (remove_folder_cb), si);
    g_signal_connect (si->listener, "update_folder", G_CALLBACK (update_folder_cb), si);
    
    corba_listener = evolution_storage_listener_corba_objref (si->listener);

    CORBA_exception_init (&ev);
    GNOME_Evolution_Storage_addListener (corba_storage, corba_listener, &ev);
    if (BONOBO_EX (&ev)) {
        g_warning ("Exception adding listener: %s", 
               CORBA_exception_id (&ev));
        CORBA_exception_free (&ev);
        
        return FALSE;
    }

    CORBA_exception_free (&ev);

    return TRUE;
}

static gboolean
e_summary_folder_unregister_storage (StorageInfo *si, gboolean remove)
{
    GNOME_Evolution_StorageListener corba_listener;
    CORBA_Environment ev;
    
    g_free (si->name);

    corba_listener = evolution_storage_listener_corba_objref (si->listener);

    CORBA_exception_init (&ev);
    GNOME_Evolution_Storage_removeListener (si->storage, corba_listener, &ev);
    if (BONOBO_EX (&ev)) {
        g_warning ("Exception removing listener: %s", 
               CORBA_exception_id (&ev));
        CORBA_exception_free (&ev);
        
        return FALSE;
    }
    CORBA_exception_free (&ev);

    g_signal_handlers_disconnect_matched (si->listener, G_SIGNAL_MATCH_DATA, 0, 0, NULL, NULL, si);
    g_object_unref (si->listener);

    bonobo_object_release_unref (si->storage, NULL);
    
    /* FIXME Folders */

    if (remove)
        folder_store->storage_list = g_slist_remove (folder_store->storage_list, si);
    
    g_free (si);

    return TRUE;
}

static void
e_summary_folder_register_local_storage (void)
{
    GNOME_Evolution_Storage local_storage;
    CORBA_Environment ev;

    CORBA_exception_init (&ev);
    local_storage = GNOME_Evolution_Shell_getLocalStorage (folder_store->shell, &ev);
    if (BONOBO_EX (&ev) || local_storage == CORBA_OBJECT_NIL) {
        g_warning ("Error getting local storage: %s", CORBA_exception_id (&ev));
        CORBA_exception_free (&ev);
        return;
    }
    CORBA_exception_free (&ev);

    e_summary_folder_register_storage (_("Local Folders"), local_storage);
}

static void
storage_notify (BonoboListener *listener,
        const char *name,
        const BonoboArg *arg,
        CORBA_Environment *ev,
        gpointer data)
{
    GNOME_Evolution_StorageRegistry_NotifyResult *nr;
    GNOME_Evolution_Storage corba_storage;
    CORBA_Environment ev2;
    
    nr = arg->_value;

    switch (nr->type) {
    case GNOME_Evolution_StorageRegistry_STORAGE_CREATED:
        /* These need to be special cased because they're special */
        if (strcmp (nr->name, "summary") == 0) {
            break;
        }

        if (strcmp (nr->name, "local") == 0) {
            e_summary_folder_register_local_storage ();
            break;
        }
        
        CORBA_exception_init (&ev2);
        corba_storage = GNOME_Evolution_StorageRegistry_getStorageByName (folder_store->registry,
                                          nr->name, &ev2);
        if (BONOBO_EX (&ev2) || corba_storage == CORBA_OBJECT_NIL) {
            g_warning ("Error getting storage %s\n%s", nr->name,
                   CORBA_exception_id (&ev2));
            CORBA_exception_free (&ev2);
            return;
        }

        CORBA_exception_free (&ev2);
        e_summary_folder_register_storage (nr->name, corba_storage);
        break;

    case GNOME_Evolution_StorageRegistry_STORAGE_DESTROYED:
        g_print ("%s removed\n", nr->name);
        break;

    default:
        g_print ("Unknown response %d\n", nr->type);
        break;
    }
}

static gboolean
e_summary_folder_register_storages (GNOME_Evolution_Shell corba_shell)
{
    Bonobo_Listener corba_listener;
    CORBA_Environment ev;

    CORBA_exception_init (&ev);

    folder_store->registry = Bonobo_Unknown_queryInterface (corba_shell,
                                "IDL:GNOME/Evolution/StorageRegistry:1.0",
                                &ev);
    if (BONOBO_EX (&ev) || folder_store->registry == NULL) {
        g_warning ("No storage registry: %s", CORBA_exception_id (&ev));
        CORBA_exception_free (&ev);
        return FALSE;
    }

    folder_store->registry_listener = bonobo_listener_new (NULL, NULL);
    g_signal_connect (folder_store->registry_listener, "event-notify", G_CALLBACK (storage_notify), NULL);
    corba_listener = BONOBO_OBJREF (folder_store->registry_listener);

    /* Storages will be added whenever the listener gets an event. */
    GNOME_Evolution_StorageRegistry_addListener (folder_store->registry, corba_listener, &ev);
    if (BONOBO_EX (&ev)) {
        g_warning ("Cannot add listener\n%s", CORBA_exception_id (&ev));
        CORBA_exception_free (&ev);
        return FALSE;
    }
    
    CORBA_exception_free (&ev);
    return TRUE;
}

void
e_summary_mail_init (ESummary *summary)
{
    ESummaryMail *mail;

    g_return_if_fail (summary != NULL);
    g_return_if_fail (IS_E_SUMMARY (summary));

    g_return_if_fail (folder_store != NULL);
    
    mail = g_new0 (ESummaryMail, 1);
    summary->mail = mail;

    mail->html = NULL;

    e_summary_add_protocol_listener (summary, "mail", e_summary_mail_protocol, mail);
    return;
}

void
e_summary_mail_reconfigure (void)
{
    ESummaryPrefs *preferences;
    GList *old;
    GSList *p;

    old = folder_store->shown;
    folder_store->shown = NULL;

    preferences = e_summary_preferences_get_global ();
    for (p = preferences->display_folders; p; p = p->next) {
        ESummaryMailFolder *folder;
        ESummaryPrefsFolder *f = p->data;
        char *uri;

#if 0
        if (strncmp (p->data, "file://", 7) == 0 ||
            strncmp (p->data, "vfolder:", 8) == 0) {
            uri = g_strdup (p->data);
        } else {
            uri = g_strconcat ("file://", p->data, NULL);
        }
#endif
        uri = g_strdup (f->physical_uri);
        folder = g_hash_table_lookup (folder_store->physical_uri_to_folder, uri);
        if (folder != NULL) {
            if (folder->init == FALSE) {
                e_summary_mail_get_info (folder->physical_uri);
            }
            folder_store->shown = g_list_append (folder_store->shown, folder);
        }

        g_free (uri);
    }

    /* Free the old list */
    g_list_free (old);

/*      e_summary_redraw_all (); */
}


void
e_summary_mail_free (ESummary *summary)
{
    ESummaryMail *mail;

    g_return_if_fail (summary != NULL);
    g_return_if_fail (IS_E_SUMMARY (summary));

    mail = summary->mail;

#if 0
    g_hash_table_foreach (mail->folders, free_folder, NULL);
    g_hash_table_destroy (mail->folders);
#endif
    g_free (mail->html);

#if 0
    g_signal_handlers_disconnect_by_func (mail->storage_listener, G_CALLBACK (new_folder_cb), summary);
    g_signal_handlers_disconnect_by_func (mail->storage_listener, G_CALLBACK (remove_folder_cb), summary);
    g_signal_handlers_disconnect_by_func (mail->storage_listener, G_CALLBACK (update_folder_cb), summary);
#endif
    
    g_free (mail);
    summary->mail = NULL;
}

static void
folder_info_pb_changed (BonoboListener *listener,
            const char *name,
            const BonoboArg *arg,
            CORBA_Environment *ev,
            gpointer data)
{
    e_summary_folder_register_storages (folder_store->shell);
    bonobo_object_unref (listener);
}

static void
lazy_register_storages (void)
{
    Bonobo_PropertyBag pb;
    Bonobo_EventSource event;
    BonoboListener *listener;
    CORBA_Environment ev;
    gboolean ready;
    
    /* Get the PropertyBag */
    CORBA_exception_init (&ev);
    pb = Bonobo_Unknown_queryInterface (folder_store->folder_info,
                        "IDL:Bonobo/PropertyBag:1.0", &ev);
    if (BONOBO_EX (&ev)) {
        g_warning ("Error getting propertybag interface: %s",
               CORBA_exception_id (&ev));
        CORBA_exception_free (&ev);
        return;
    }

    /* Check the initial value */
    ready = bonobo_property_bag_client_get_value_gboolean (pb,
                                   "folder-info-ready",
                                   NULL);
    if (ready == TRUE) {
        /* Register storages */
        e_summary_folder_register_storages (folder_store->shell); 
        bonobo_object_release_unref (pb, NULL);     
        return;
    }
    
    /* Get thh event source for the bag */
    event = Bonobo_Unknown_queryInterface (pb,
                           "IDL:Bonobo/EventSource:1.0", &ev);
    if (BONOBO_EX (&ev)) {
        g_warning ("Error getting event source interface: %s",
               CORBA_exception_id (&ev));
        CORBA_exception_free (&ev);
        bonobo_object_release_unref (pb, NULL);
        return;
    }

    /* Connect a listener to it */
    listener = bonobo_listener_new (NULL, NULL);
    g_signal_connect (listener, "event-notify", G_CALLBACK (folder_info_pb_changed), NULL);
    
    Bonobo_EventSource_addListener (event, BONOBO_OBJREF (listener), &ev);
    if (BONOBO_EX (&ev)) {
        g_warning ("Error adding listener: %s\n",
               CORBA_exception_id (&ev));
        CORBA_exception_free (&ev);
        bonobo_object_unref (BONOBO_OBJECT (listener));
    }

    bonobo_object_release_unref (pb, NULL);
    bonobo_object_release_unref (event, NULL);
}

gboolean
e_summary_folder_init_folder_store (GNOME_Evolution_Shell shell)
{
    CORBA_Environment ev;

    if (folder_store != NULL) {
        return TRUE;
    }

    folder_store = g_new0 (FolderStore, 1);
    folder_store->shell = shell;
    
    CORBA_exception_init (&ev);
    folder_store->folder_info = bonobo_activation_activate_from_id (MAIL_IID, 0, NULL, &ev);
    if (BONOBO_EX (&ev) || folder_store->folder_info == NULL) {
        g_warning ("Exception creating folderinfo: %s\n",
               CORBA_exception_id (&ev) ? CORBA_exception_id (&ev) : "(null)");
        CORBA_exception_free (&ev);
        return FALSE;
    }

    CORBA_exception_free (&ev);

    folder_store->listener = bonobo_listener_new (NULL, NULL);
    g_signal_connect (folder_store->listener, "event-notify", G_CALLBACK (mail_change_notify), NULL);
    
    /* Create a hash table for the folders */
    folder_store->path_to_folder = g_hash_table_new (g_str_hash, g_str_equal);
    folder_store->physical_uri_to_folder = g_hash_table_new (g_str_hash, g_str_equal);

    /* Wait for the mailer to tell us we're ready to register */
    lazy_register_storages ();
    return TRUE;
}


gboolean
e_summary_folder_clear_folder_store (void)
{
    GSList *l;
    
    if (folder_store == NULL) {
        return TRUE;
    }

    bonobo_object_release_unref (folder_store->folder_info, NULL);
    bonobo_object_release_unref (folder_store->registry, NULL);
    bonobo_object_unref (folder_store->registry_listener);
    bonobo_object_unref (folder_store->listener);

    for (l = folder_store->storage_list; l != NULL; l = l->next)
        e_summary_folder_unregister_storage (l->data, FALSE);
    g_slist_free (folder_store->storage_list);
    
    g_free (folder_store);
    folder_store = NULL;
    
    return TRUE;
}