path: root/modules/contact-photos/e-photo-cache-contact-loader.c

/*
 * e-photo-cache-contact-loader.c
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) version 3.
 *
 * 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with the program; if not, see <http://www.gnu.org/licenses/>
 *
 */

#include "e-photo-cache-contact-loader.h"

#include "e-contact-photo-source.h"

#define E_PHOTO_CACHE_CONTACT_LOADER_GET_PRIVATE(obj) \
    (G_TYPE_INSTANCE_GET_PRIVATE \
    ((obj), E_TYPE_PHOTO_CACHE_CONTACT_LOADER, EPhotoCacheContactLoaderPrivate))

struct _EPhotoCacheContactLoaderPrivate {
    ESourceRegistry *registry;
    gulong source_added_handler_id;
    gulong source_removed_handler_id;

    /* ESource -> EPhotoSource */
    GHashTable *photo_sources;
};

G_DEFINE_DYNAMIC_TYPE (
    EPhotoCacheContactLoader,
    e_photo_cache_contact_loader,
    E_TYPE_EXTENSION)

static EPhotoCache *
photo_cache_contact_loader_get_photo_cache (EPhotoCacheContactLoader *loader)
{
    EExtensible *extensible;

    extensible = e_extension_get_extensible (E_EXTENSION (loader));

    return E_PHOTO_CACHE (extensible);
}

static void
photo_cache_contact_loader_add_source (EPhotoCacheContactLoader *loader,
                                       ESource *source)
{
    EPhotoCache *photo_cache;
    EPhotoSource *photo_source;
    EClientCache *client_cache;

    photo_cache = photo_cache_contact_loader_get_photo_cache (loader);
    client_cache = e_photo_cache_ref_client_cache (photo_cache);

    photo_source = e_contact_photo_source_new (client_cache, source);
    g_hash_table_insert (
        loader->priv->photo_sources,
        g_object_ref (source),
        g_object_ref (photo_source));
    e_photo_cache_add_photo_source (photo_cache, photo_source);
    g_object_unref (photo_source);

    g_object_unref (client_cache);
}

static void
photo_cache_contact_loader_remove_source (EPhotoCacheContactLoader *loader,
                                          ESource *source)
{
    EPhotoCache *photo_cache;
    EPhotoSource *photo_source;
    GHashTable *hash_table;

    photo_cache = photo_cache_contact_loader_get_photo_cache (loader);

    hash_table = loader->priv->photo_sources;
    photo_source = g_hash_table_lookup (hash_table, source);
    if (photo_source != NULL) {
        e_photo_cache_remove_photo_source (photo_cache, photo_source);
        g_hash_table_remove (hash_table, source);
    }
}

static void
photo_cache_contact_loader_source_added_cb (ESourceRegistry *registry,
                                            ESource *source,
                                            EPhotoCacheContactLoader *loader)
{
    const gchar *extension_name = E_SOURCE_EXTENSION_ADDRESS_BOOK;

    if (e_source_has_extension (source, extension_name))
        photo_cache_contact_loader_add_source (loader, source);
}

static void
photo_cache_contact_loader_source_removed_cb (ESourceRegistry *registry,
                                              ESource *source,
                                              EPhotoCacheContactLoader *loader)
{
    const gchar *extension_name = E_SOURCE_EXTENSION_ADDRESS_BOOK;

    if (e_source_has_extension (source, extension_name))
        photo_cache_contact_loader_remove_source (loader, source);
}

static void
photo_cache_contact_loader_dispose (GObject *object)
{
    EPhotoCacheContactLoaderPrivate *priv;

    priv = E_PHOTO_CACHE_CONTACT_LOADER_GET_PRIVATE (object);

    if (priv->source_added_handler_id > 0) {
        g_signal_handler_disconnect (
            priv->registry,
            priv->source_added_handler_id);
        priv->source_added_handler_id = 0;
    }

    if (priv->source_removed_handler_id > 0) {
        g_signal_handler_disconnect (
            priv->registry,
            priv->source_removed_handler_id);
        priv->source_removed_handler_id = 0;
    }

    g_clear_object (&priv->registry);

    g_hash_table_remove_all (priv->photo_sources);

    /* Chain up to parent's dispose() method. */
    G_OBJECT_CLASS (e_photo_cache_contact_loader_parent_class)->
        dispose (object);
}

static void
photo_cache_contact_loader_finalize (GObject *object)
{
    EPhotoCacheContactLoaderPrivate *priv;

    priv = E_PHOTO_CACHE_CONTACT_LOADER_GET_PRIVATE (object);

    g_hash_table_destroy (priv->photo_sources);

    /* Chain up to parent's finalize() method. */
    G_OBJECT_CLASS (e_photo_cache_contact_loader_parent_class)->
        finalize (object);
}

static void
photo_cache_contact_loader_constructed (GObject *object)
{
    EPhotoCacheContactLoader *loader;
    EPhotoCache *photo_cache;
    EClientCache *client_cache;
    ESourceRegistry *registry;
    GList *list, *link;
    const gchar *extension_name;
    gulong handler_id;

    /* Chain up to parent's constructed() method. */
    G_OBJECT_CLASS (e_photo_cache_contact_loader_parent_class)->
        constructed (object);

    loader = E_PHOTO_CACHE_CONTACT_LOADER (object);
    photo_cache = photo_cache_contact_loader_get_photo_cache (loader);

    client_cache = e_photo_cache_ref_client_cache (photo_cache);
    registry = e_client_cache_ref_registry (client_cache);

    extension_name = E_SOURCE_EXTENSION_ADDRESS_BOOK;
    list = e_source_registry_list_sources (registry, extension_name);

    for (link = list; link != NULL; link = g_list_next (link)) {
        ESource *source = E_SOURCE (link->data);
        photo_cache_contact_loader_add_source (loader, source);
    }

    g_list_free_full (list, (GDestroyNotify) g_object_unref);

    loader->priv->registry = g_object_ref (registry);

    handler_id = g_signal_connect (
        registry, "source-added",
        G_CALLBACK (photo_cache_contact_loader_source_added_cb),
        loader);
    loader->priv->source_added_handler_id = handler_id;

    handler_id = g_signal_connect (
        registry, "source-removed",
        G_CALLBACK (photo_cache_contact_loader_source_removed_cb),
        loader);
    loader->priv->source_removed_handler_id = handler_id;

    g_object_unref (client_cache);
    g_object_unref (registry);
}

static void
e_photo_cache_contact_loader_class_init (EPhotoCacheContactLoaderClass *class)
{
    GObjectClass *object_class;
    EExtensionClass *extension_class;

    g_type_class_add_private (
        class, sizeof (EPhotoCacheContactLoaderPrivate));

    object_class = G_OBJECT_CLASS (class);
    object_class->dispose = photo_cache_contact_loader_dispose;
    object_class->finalize = photo_cache_contact_loader_finalize;
    object_class->constructed = photo_cache_contact_loader_constructed;

    extension_class = E_EXTENSION_CLASS (class);
    extension_class->extensible_type = E_TYPE_PHOTO_CACHE;
}

static void
e_photo_cache_contact_loader_class_finalize (EPhotoCacheContactLoaderClass *class)
{
}

static void
e_photo_cache_contact_loader_init (EPhotoCacheContactLoader *loader)
{
    GHashTable *photo_sources;

    photo_sources = g_hash_table_new_full (
        (GHashFunc) e_source_hash,
        (GEqualFunc) e_source_equal,
        (GDestroyNotify) g_object_unref,
        (GDestroyNotify) g_object_unref);

    loader->priv = E_PHOTO_CACHE_CONTACT_LOADER_GET_PRIVATE (loader);
    loader->priv->photo_sources = photo_sources;
}

void
e_photo_cache_contact_loader_type_register (GTypeModule *type_module)
{
    /* XXX G_DEFINE_DYNAMIC_TYPE declares a static type registration
     *     function, so we have to wrap it with a public function in
     *     order to register types from a separate compilation unit. */
    e_photo_cache_contact_loader_register_type (type_module);
}