path: root/mail/e-mail-config-service-backend.c

/*
 * e-mail-config-service-backend.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-mail-config-service-backend.h"

#include <mail/e-mail-config-receiving-page.h>
#include <mail/e-mail-config-sending-page.h>

#define E_MAIL_CONFIG_SERVICE_BACKEND_GET_PRIVATE(obj) \
    (G_TYPE_INSTANCE_GET_PRIVATE \
    ((obj), E_TYPE_MAIL_CONFIG_SERVICE_BACKEND, EMailConfigServiceBackendPrivate))

struct _EMailConfigServiceBackendPrivate {
    ESource *source;
    ESource *collection;
};

enum {
    PROP_0,
    PROP_COLLECTION,
    PROP_SELECTABLE,
    PROP_SOURCE
};

G_DEFINE_ABSTRACT_TYPE (
    EMailConfigServiceBackend,
    e_mail_config_service_backend,
    E_TYPE_EXTENSION)

static void
mail_config_service_backend_init_collection (EMailConfigServiceBackend *backend)
{
    EMailConfigServiceBackendClass *class;

    /* Use the new_collection() method to initialize the "collection"
     * property.  This assumes we're editing a new account.  If we're
     * editing an existing account, the initial "collection" property
     * value should be overridden with the existing collection source. */

    g_return_if_fail (backend->priv->collection == NULL);

    class = E_MAIL_CONFIG_SERVICE_BACKEND_GET_CLASS (backend);
    g_return_if_fail (class->new_collection != NULL);

    backend->priv->collection = class->new_collection (backend);
}

static void
mail_config_service_backend_set_property (GObject *object,
                                          guint property_id,
                                          const GValue *value,
                                          GParamSpec *pspec)
{
    switch (property_id) {
        case PROP_COLLECTION:
            e_mail_config_service_backend_set_collection (
                E_MAIL_CONFIG_SERVICE_BACKEND (object),
                g_value_get_object (value));
            return;

        case PROP_SOURCE:
            e_mail_config_service_backend_set_source (
                E_MAIL_CONFIG_SERVICE_BACKEND (object),
                g_value_get_object (value));
            return;
    }

    G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
}

static void
mail_config_service_backend_get_property (GObject *object,
                                          guint property_id,
                                          GValue *value,
                                          GParamSpec *pspec)
{
    switch (property_id) {
        case PROP_COLLECTION:
            g_value_set_object (
                value,
                e_mail_config_service_backend_get_collection (
                E_MAIL_CONFIG_SERVICE_BACKEND (object)));
            return;

        case PROP_SELECTABLE:
            g_value_set_boolean (
                value,
                e_mail_config_service_backend_get_selectable (
                E_MAIL_CONFIG_SERVICE_BACKEND (object)));
            return;

        case PROP_SOURCE:
            g_value_set_object (
                value,
                e_mail_config_service_backend_get_source (
                E_MAIL_CONFIG_SERVICE_BACKEND (object)));
            return;
    }

    G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
}

static void
mail_config_service_backend_dispose (GObject *object)
{
    EMailConfigServiceBackendPrivate *priv;

    priv = E_MAIL_CONFIG_SERVICE_BACKEND_GET_PRIVATE (object);

    if (priv->source != NULL) {
        g_object_unref (priv->source);
        priv->source = NULL;
    }

    if (priv->collection != NULL) {
        g_object_unref (priv->collection);
        priv->collection = NULL;
    }

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

static void
mail_config_service_backend_constructed (GObject *object)
{
    EMailConfigServiceBackend *backend;

    backend = E_MAIL_CONFIG_SERVICE_BACKEND (object);
    mail_config_service_backend_init_collection (backend);

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

static gboolean
mail_config_service_backend_get_selectable (EMailConfigServiceBackend *backend)
{
    EMailConfigServicePage *page;
    CamelProvider *provider;
    gboolean selectable = TRUE;

    page = e_mail_config_service_backend_get_page (backend);
    provider = e_mail_config_service_backend_get_provider (backend);

    if (CAMEL_PROVIDER_IS_STORE_AND_TRANSPORT (provider))
        selectable = E_IS_MAIL_CONFIG_RECEIVING_PAGE (page);

    return selectable;
}

static ESource *
mail_config_service_backend_new_collection (EMailConfigServiceBackend *backend)
{
    /* This is typically only used for groupware backends. */
    return NULL;
}

static void
mail_config_service_backend_insert_widgets (EMailConfigServiceBackend *backend,
                                            GtkBox *parent)
{
    /* does nothing */
}

static void
mail_config_service_backend_setup_defaults (EMailConfigServiceBackend *backend)
{
    /* does nothing */
}

static gboolean
mail_config_service_backend_auto_configure (EMailConfigServiceBackend *backend,
                                            EMailAutoconfig *autoconfig)
{
    return FALSE;
}

static gboolean
mail_config_service_backend_check_complete (EMailConfigServiceBackend *backend)
{
    return TRUE;
}

static void
mail_config_service_backend_commit_changes (EMailConfigServiceBackend *backend)
{
    /* does nothing */
}

static void
e_mail_config_service_backend_class_init (EMailConfigServiceBackendClass *class)
{
    GObjectClass *object_class;
    EExtensionClass *extension_class;

    g_type_class_add_private (
        class, sizeof (EMailConfigServiceBackendPrivate));

    object_class = G_OBJECT_CLASS (class);
    object_class->set_property = mail_config_service_backend_set_property;
    object_class->get_property = mail_config_service_backend_get_property;
    object_class->dispose = mail_config_service_backend_dispose;
    object_class->constructed = mail_config_service_backend_constructed;

    extension_class = E_EXTENSION_CLASS (class);
    extension_class->extensible_type = E_TYPE_MAIL_CONFIG_SERVICE_PAGE;

    class->get_selectable = mail_config_service_backend_get_selectable;
    class->new_collection = mail_config_service_backend_new_collection;
    class->insert_widgets = mail_config_service_backend_insert_widgets;
    class->setup_defaults = mail_config_service_backend_setup_defaults;
    class->auto_configure = mail_config_service_backend_auto_configure;
    class->check_complete = mail_config_service_backend_check_complete;
    class->commit_changes = mail_config_service_backend_commit_changes;

    g_object_class_install_property (
        object_class,
        PROP_COLLECTION,
        g_param_spec_object (
            "collection",
            "Collection",
            "Optional collection ESource",
            E_TYPE_SOURCE,
            G_PARAM_READWRITE |
            G_PARAM_STATIC_STRINGS));

    g_object_class_install_property (
        object_class,
        PROP_SELECTABLE,
        g_param_spec_boolean (
            "selectable",
            "Selectable",
            "Whether the backend is user selectable",
            TRUE,  /* not applied */
            G_PARAM_READABLE |
            G_PARAM_STATIC_STRINGS));

    g_object_class_install_property (
        object_class,
        PROP_SOURCE,
        g_param_spec_object (
            "source",
            "Source",
            "The ESource being edited",
            E_TYPE_SOURCE,
            G_PARAM_READWRITE |
            G_PARAM_STATIC_STRINGS));
}

static void
e_mail_config_service_backend_init (EMailConfigServiceBackend *backend)
{
    backend->priv = E_MAIL_CONFIG_SERVICE_BACKEND_GET_PRIVATE (backend);
}

EMailConfigServicePage *
e_mail_config_service_backend_get_page (EMailConfigServiceBackend *backend)
{
    EExtensible *extensible;

    g_return_val_if_fail (E_IS_MAIL_CONFIG_SERVICE_BACKEND (backend), NULL);

    extensible = e_extension_get_extensible (E_EXTENSION (backend));

    return E_MAIL_CONFIG_SERVICE_PAGE (extensible);
}

ESource *
e_mail_config_service_backend_get_source (EMailConfigServiceBackend *backend)
{
    g_return_val_if_fail (E_IS_MAIL_CONFIG_SERVICE_BACKEND (backend), NULL);

    return backend->priv->source;
}

void
e_mail_config_service_backend_set_source (EMailConfigServiceBackend *backend,
                                          ESource *source)
{
    g_return_if_fail (E_IS_MAIL_CONFIG_SERVICE_BACKEND (backend));

    if (backend->priv->source == source)
        return;

    if (source != NULL) {
        g_return_if_fail (E_IS_SOURCE (source));
        g_object_ref (source);
    }

    if (backend->priv->source != NULL)
        g_object_unref (backend->priv->source);

    backend->priv->source = source;

    g_object_notify (G_OBJECT (backend), "source");
}

ESource *
e_mail_config_service_backend_get_collection (EMailConfigServiceBackend *backend)
{
    g_return_val_if_fail (E_IS_MAIL_CONFIG_SERVICE_BACKEND (backend), NULL);

    return backend->priv->collection;
}

void
e_mail_config_service_backend_set_collection (EMailConfigServiceBackend *backend,
                                              ESource *collection)
{
    g_return_if_fail (E_IS_MAIL_CONFIG_SERVICE_BACKEND (backend));

    if (backend->priv->collection == collection)
        return;

    if (collection != NULL) {
        g_return_if_fail (E_IS_SOURCE (collection));
        g_object_ref (collection);
    }

    if (backend->priv->collection != NULL)
        g_object_unref (backend->priv->collection);

    backend->priv->collection = collection;

    g_object_notify (G_OBJECT (backend), "collection");
}

CamelProvider *
e_mail_config_service_backend_get_provider (EMailConfigServiceBackend *backend)
{
    EMailConfigServiceBackendClass *class;

    g_return_val_if_fail (E_IS_MAIL_CONFIG_SERVICE_BACKEND (backend), NULL);

    class = E_MAIL_CONFIG_SERVICE_BACKEND_GET_CLASS (backend);
    g_return_val_if_fail (class->backend_name != NULL, NULL);

    return camel_provider_get (class->backend_name, NULL);
}

CamelSettings *
e_mail_config_service_backend_get_settings (EMailConfigServiceBackend *backend)
{
    ESource *source;
    ESourceCamel *camel_extension = NULL;
    EMailConfigServicePage *page;
    EMailConfigServicePageClass *page_class;

    g_return_val_if_fail (E_IS_MAIL_CONFIG_SERVICE_BACKEND (backend), NULL);

    page = e_mail_config_service_backend_get_page (backend);
    page_class = E_MAIL_CONFIG_SERVICE_PAGE_GET_CLASS (page);

    /* Which ESource do we pull the CamelSettings from?  This is a
     * little tricky because we have to handle the following cases:
     *
     *   1) A stand-alone mail account.
     *
     *   2) A collection with a specialized backend (e.g. ews).
     *
     *   3) A collection that uses standard backends (e.g. yahoo).
     *
     * So the semantics are as follows.  They work for now but may
     * need further tweaking as we support more collection types.
     *
     *   1) If the service backend defines a collection source,
     *      assume the CamelSettings will be pulled from there.
     *
     *   2) If we have a collection source, try extracting the
     *      ESourceCamel extension for the collection source's
     *      backend name.
     *
     *   3) If steps 1 or 2 fail, pull the CamelSettings from
     *      the service backend's own scratch source.
     */

    source = e_mail_config_service_backend_get_collection (backend);
    if (source != NULL) {
        ESourceBackend *backend_extension;
        const gchar *backend_name;
        const gchar *extension_name;

        extension_name = E_SOURCE_EXTENSION_COLLECTION;
        backend_extension =
            e_source_get_extension (source, extension_name);
        backend_name =
            e_source_backend_get_backend_name (backend_extension);

        extension_name =
            e_source_camel_get_extension_name (backend_name);
        camel_extension =
            e_source_get_extension (source, extension_name);
    }

    if (camel_extension == NULL) {
        ESourceBackend *backend_extension;
        const gchar *backend_name;
        const gchar *extension_name;

        source = e_mail_config_service_backend_get_source (backend);

        extension_name = page_class->extension_name;
        backend_extension =
            e_source_get_extension (source, extension_name);
        backend_name =
            e_source_backend_get_backend_name (backend_extension);

        extension_name =
            e_source_camel_get_extension_name (backend_name);
        camel_extension =
            e_source_get_extension (source, extension_name);
    }

    return e_source_camel_get_settings (camel_extension);
}

gboolean
e_mail_config_service_backend_get_selectable (EMailConfigServiceBackend *backend)
{
    EMailConfigServiceBackendClass *class;

    g_return_val_if_fail (E_IS_MAIL_CONFIG_SERVICE_BACKEND (backend), FALSE);

    class = E_MAIL_CONFIG_SERVICE_BACKEND_GET_CLASS (backend);
    g_return_val_if_fail (class->get_selectable != NULL, FALSE);

    return class->get_selectable (backend);
}

void
e_mail_config_service_backend_insert_widgets (EMailConfigServiceBackend *backend,
                                              GtkBox *parent)
{
    EMailConfigServiceBackendClass *class;

    g_return_if_fail (E_IS_MAIL_CONFIG_SERVICE_BACKEND (backend));
    g_return_if_fail (GTK_IS_BOX (parent));

    class = E_MAIL_CONFIG_SERVICE_BACKEND_GET_CLASS (backend);
    g_return_if_fail (class->insert_widgets != NULL);

    class->insert_widgets (backend, parent);
}

void
e_mail_config_service_backend_setup_defaults (EMailConfigServiceBackend *backend)
{
    EMailConfigServiceBackendClass *class;

    g_return_if_fail (E_IS_MAIL_CONFIG_SERVICE_BACKEND (backend));

    class = E_MAIL_CONFIG_SERVICE_BACKEND_GET_CLASS (backend);
    g_return_if_fail (class->setup_defaults != NULL);

    return class->setup_defaults (backend);
}

gboolean
e_mail_config_service_backend_auto_configure (EMailConfigServiceBackend *backend,
                                              EMailAutoconfig *autoconfig)
{
    EMailConfigServiceBackendClass *class;

    g_return_val_if_fail (E_IS_MAIL_CONFIG_SERVICE_BACKEND (backend), FALSE);
    g_return_val_if_fail (E_IS_MAIL_AUTOCONFIG (autoconfig), FALSE);

    class = E_MAIL_CONFIG_SERVICE_BACKEND_GET_CLASS (backend);
    g_return_val_if_fail (class->auto_configure != NULL, FALSE);

    return class->auto_configure (backend, autoconfig);
}

gboolean
e_mail_config_service_backend_check_complete (EMailConfigServiceBackend *backend)
{
    EMailConfigServiceBackendClass *class;

    g_return_val_if_fail (E_IS_MAIL_CONFIG_SERVICE_BACKEND (backend), FALSE);

    class = E_MAIL_CONFIG_SERVICE_BACKEND_GET_CLASS (backend);
    g_return_val_if_fail (class->check_complete != NULL, FALSE);

    return class->check_complete (backend);
}

void
e_mail_config_service_backend_commit_changes (EMailConfigServiceBackend *backend)
{
    EMailConfigServiceBackendClass *class;

    g_return_if_fail (E_IS_MAIL_CONFIG_SERVICE_BACKEND (backend));

    class = E_MAIL_CONFIG_SERVICE_BACKEND_GET_CLASS (backend);
    g_return_if_fail (class->commit_changes != NULL);

    class->commit_changes (backend);
}