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/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/*
* soup-session-feature.c: Miscellaneous session feature-provider interface
*
* Copyright (C) 2008 Red Hat, Inc.
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include "soup-session-feature.h"
#include "soup.h"
#include "soup-message-private.h"
/**
* SECTION:soup-session-feature
* @short_description: Interface for miscellaneous session features
*
* #SoupSessionFeature is the interface used by classes that extend
* the functionality of a #SoupSession. Some features like HTTP
* authentication handling are implemented internally via
* #SoupSessionFeature<!-- -->s. Other features can be added to the session
* by the application. (Eg, #SoupLogger, #SoupCookieJar.)
*
* See soup_session_add_feature(), etc, to add a feature to a session.
**/
/**
* SoupSessionFeature:
*
* An object that implement some sort of optional feature for
* #SoupSession.
*
* Since: 2.24
**/
/**
* SoupSessionFeatureInterface:
* @parent: The parent interface.
* @attach: Perform setup when a feature is added to a session
* @detach: Perform cleanup when a feature is removed from a session
* @request_queued: Proxies the session's #SoupSession::request_queued signal
* @request_started: Proxies the session's #SoupSession::request_started signal
* @request_unqueued: Proxies the session's #SoupSession::request_unqueued signal
* @add_feature: adds a sub-feature to the main feature
* @remove_feature: removes a sub-feature from the main feature
* @has_feature: tests if the feature includes a sub-feature
*
* The interface implemented by #SoupSessionFeature<!-- -->s.
*
* Since: 2.24
**/
static void soup_session_feature_default_init (SoupSessionFeatureInterface *interface);
G_DEFINE_INTERFACE (SoupSessionFeature, soup_session_feature, G_TYPE_OBJECT)
static void
weak_notify_unref (gpointer feature, GObject *ex_object)
{
g_object_unref (feature);
}
static void
request_queued (SoupSession *session, SoupMessage *msg, gpointer feature)
{
if (soup_message_disables_feature (msg, feature))
return;
SOUP_SESSION_FEATURE_GET_CLASS (feature)->
request_queued (feature, session, msg);
}
static void
request_started (SoupSession *session, SoupMessage *msg,
SoupSocket *socket, gpointer feature)
{
if (soup_message_disables_feature (msg, feature))
return;
SOUP_SESSION_FEATURE_GET_CLASS (feature)->
request_started (feature, session, msg, socket);
}
static void
request_unqueued (SoupSession *session, SoupMessage *msg, gpointer feature)
{
if (soup_message_disables_feature (msg, feature))
return;
SOUP_SESSION_FEATURE_GET_CLASS (feature)->
request_unqueued (feature, session, msg);
}
static void
soup_session_feature_real_attach (SoupSessionFeature *feature, SoupSession *session)
{
g_object_weak_ref (G_OBJECT (session),
weak_notify_unref, g_object_ref (feature));
if (SOUP_SESSION_FEATURE_GET_CLASS (feature)->request_queued) {
g_signal_connect (session, "request_queued",
G_CALLBACK (request_queued), feature);
}
if (SOUP_SESSION_FEATURE_GET_CLASS (feature)->request_started) {
g_signal_connect (session, "request_started",
G_CALLBACK (request_started), feature);
}
if (SOUP_SESSION_FEATURE_GET_CLASS (feature)->request_unqueued) {
g_signal_connect (session, "request_unqueued",
G_CALLBACK (request_unqueued), feature);
}
}
void
soup_session_feature_attach (SoupSessionFeature *feature,
SoupSession *session)
{
SOUP_SESSION_FEATURE_GET_CLASS (feature)->attach (feature, session);
}
static void
soup_session_feature_real_detach (SoupSessionFeature *feature, SoupSession *session)
{
g_object_weak_unref (G_OBJECT (session), weak_notify_unref, feature);
g_signal_handlers_disconnect_by_func (session, request_queued, feature);
g_signal_handlers_disconnect_by_func (session, request_started, feature);
g_signal_handlers_disconnect_by_func (session, request_unqueued, feature);
g_object_unref (feature);
}
void
soup_session_feature_detach (SoupSessionFeature *feature,
SoupSession *session)
{
SOUP_SESSION_FEATURE_GET_CLASS (feature)->detach (feature, session);
}
static void
soup_session_feature_default_init (SoupSessionFeatureInterface *interface)
{
interface->attach = soup_session_feature_real_attach;
interface->detach = soup_session_feature_real_detach;
}
/**
* soup_session_feature_add_feature:
* @feature: the "base" feature
* @type: the #GType of a "sub-feature"
*
* Adds a "sub-feature" of type @type to the base feature @feature.
* This is used for features that can be extended with multiple
* different types. Eg, the authentication manager can be extended
* with subtypes of #SoupAuth.
*
* Return value: %TRUE if @feature accepted @type as a subfeature.
*
* Since: 2.34
*/
gboolean
soup_session_feature_add_feature (SoupSessionFeature *feature,
GType type)
{
SoupSessionFeatureInterface *feature_iface =
SOUP_SESSION_FEATURE_GET_CLASS (feature);
if (feature_iface->add_feature)
return feature_iface->add_feature (feature, type);
else
return FALSE;
}
/**
* soup_session_feature_remove_feature:
* @feature: the "base" feature
* @type: the #GType of a "sub-feature"
*
* Removes the "sub-feature" of type @type from the base feature
* @feature. See soup_session_feature_add_feature().
*
* Return value: %TRUE if @type was removed from @feature
*
* Since: 2.34
*/
gboolean
soup_session_feature_remove_feature (SoupSessionFeature *feature,
GType type)
{
SoupSessionFeatureInterface *feature_iface =
SOUP_SESSION_FEATURE_GET_CLASS (feature);
if (feature_iface->remove_feature)
return feature_iface->remove_feature (feature, type);
else
return FALSE;
}
/**
* soup_session_feature_has_feature:
* @feature: the "base" feature
* @type: the #GType of a "sub-feature"
*
* Tests if @feature has a "sub-feature" of type @type. See
* soup_session_feature_add_feature().
*
* Return value: %TRUE if @feature has a subfeature of type @type
*
* Since: 2.34
*/
gboolean
soup_session_feature_has_feature (SoupSessionFeature *feature,
GType type)
{
SoupSessionFeatureInterface *feature_iface =
SOUP_SESSION_FEATURE_GET_CLASS (feature);
if (feature_iface->has_feature)
return feature_iface->has_feature (feature, type);
else
return FALSE;
}
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