TpAccountChannelRequest

typedef struct _TpAccountChannelRequest TpAccountChannelRequest;

Data structure representing a TpAccountChannelRequest object.

Since 0.11.12

tp_account_channel_request_new ()

TpAccountChannelRequest * tp_account_channel_request_new
                                                        (TpAccount *account,
                                                         GHashTable *request,
                                                         gint64 user_action_time);

Convenience function to create a new TpAccountChannelRequest object.

Since 0.11.12

tp_account_channel_request_new_vardict ()

TpAccountChannelRequest * tp_account_channel_request_new_vardict
                                                        (TpAccount *account,
                                                         GVariant *request,
                                                         gint64 user_action_time);

Convenience function to create a new TpAccountChannelRequest object.

If request is a floating reference, this function will take ownership of it, much like g_variant_ref_sink(). See documentation of that function for details.

Since 0.19.10

tp_account_channel_request_get_request ()

GHashTable *        tp_account_channel_request_get_request
                                                        (TpAccountChannelRequest *self);

Return the "request" construct-only property

Since 0.11.12

tp_account_channel_request_dup_request ()

GVariant *          tp_account_channel_request_dup_request
                                                        (TpAccountChannelRequest *self);

Return the "request-vardict" construct-only property.

Since 0.19.10

tp_account_channel_request_get_user_action_time ()

gint64              tp_account_channel_request_get_user_action_time
                                                        (TpAccountChannelRequest *self);

Return the "user-action-time" construct-only property

Since 0.11.12

tp_account_channel_request_get_account ()

TpAccount *         tp_account_channel_request_get_account
                                                        (TpAccountChannelRequest *self);

Return the "account" construct-only property

Since 0.11.12

tp_account_channel_request_set_target_contact ()

void                tp_account_channel_request_set_target_contact
                                                        (TpAccountChannelRequest *self,
                                                         TpContact *contact);

Configure this request to create a peer-to-peer channel with contact as the other peer.

This function can't be called once self has been used to request a channel.

Since 0.19.0

tp_account_channel_request_set_target_id ()

void                tp_account_channel_request_set_target_id
                                                        (TpAccountChannelRequest *self,
                                                         TpHandleType handle_type,
                                                         const gchar *identifier);

Configure this request to create a channel with identifier, an identifier of type handle_type.

This function can't be called once self has been used to request a channel.

Since 0.19.0

tp_account_channel_request_set_request_property ()

void                tp_account_channel_request_set_request_property
                                                        (TpAccountChannelRequest *self,
                                                         const gchar *name,
                                                         GVariant *value);

Configure this channel request to include the given property, as documented in the Telepathy D-Bus API Specification or an implementation-specific extension.

Using this method is not recommended, but it can be necessary for experimental or implementation-specific interfaces.

If the property is not supported by the protocol or channel type, the channel request will fail. Use TpCapabilities and the Telepathy D-Bus API Specification to determine which properties are available.

If value is a floating reference, this method takes ownership of it by using g_variant_ref_sink(). This allows convenient inline use of GVariant constructors:

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tp_account_channel_request_set_request_property (acr, "com.example.Int",
    g_variant_new_int32 (17));
tp_account_channel_request_set_request_property (acr, "com.example.String",
    g_variant_new_string ("ferret"));

It is an error to provide a value which contains types not supported by D-Bus.

This function can't be called once self has been used to request a channel.

Since 0.19.0

tp_account_channel_request_new_text ()

TpAccountChannelRequest * tp_account_channel_request_new_text
                                                        (TpAccount *account,
                                                         gint64 user_action_time);

Convenience function to create a new TpAccountChannelRequest object which will yield a Text channel.

After creating the request, you will also need to set the "target" of the channel by calling one of the following functions:

Since 0.19.0

tp_account_channel_request_set_sms_channel ()

void                tp_account_channel_request_set_sms_channel
                                                        (TpAccountChannelRequest *self,
                                                         gboolean is_sms_channel);

If is_sms_channel is set to TRUE, messages sent and received on the requested channel will be transmitted via SMS.

This function can't be called once self has been used to request a channel.

Since 0.23.2

tp_account_channel_request_set_conference_initial_channels ()

void                tp_account_channel_request_set_conference_initial_channels
                                                        (TpAccountChannelRequest *self,
                                                         const gchar * const *channels);

Indicate that the channel which is going to be requested using self is an upgrade of the channels whose object paths is listed in channels.

This function can't be called once self has been used to request a channel.

Since 0.23.2

tp_account_channel_request_set_initial_invitee_ids ()

void                tp_account_channel_request_set_initial_invitee_ids
                                                        (TpAccountChannelRequest *self,
                                                         const gchar * const *ids);

Indicate that the contacts listed in ids have to be invited to the conference represented by the channel which is going to be requested using self.

This function can't be called once self has been used to request a channel.

Since 0.23.2

tp_account_channel_request_set_initial_invitees ()

void                tp_account_channel_request_set_initial_invitees
                                                        (TpAccountChannelRequest *self,
                                                         GPtrArray *contacts);

Indicate that the contacts listed in contacts have to be invited to the conference represented by the channel which is going to be requested using self.

This function can't be called once self has been used to request a channel.

Since 0.23.2

tp_account_channel_request_new_audio_call ()

TpAccountChannelRequest * tp_account_channel_request_new_audio_call
                                                        (TpAccount *account,
                                                         gint64 user_action_time);

Convenience function to create a new TpAccountChannelRequest object which will yield a Call channel, initially carrying audio only.

After creating the request, you will usually also need to set the "target" of the channel by calling one of the following functions:

To call a contact, either use tp_account_channel_request_set_target_contact() or one of the generic methods that takes a handle type argument. To check whether this is possible, use tp_capabilities_supports_audio_call() with handle_type set to TP_HANDLE_TYPE_CONTACT.

In some protocols, it is possible to create a Call channel without setting a target at all, which will result in a new, empty conference call. To test whether this is possible, use tp_capabilities_supports_audio_call() with handle_type set to TP_HANDLE_TYPE_NONE.

Since 0.19.0

tp_account_channel_request_new_audio_video_call ()

TpAccountChannelRequest * tp_account_channel_request_new_audio_video_call
                                                        (TpAccount *account,
                                                         gint64 user_action_time);

Convenience function to create a new TpAccountChannelRequest object which will yield a Call channel, initially carrying both audio and video.

This is the same as tp_account_channel_request_new_audio_call(), except that the channel will initially carry video as well as audio, and instead of using tp_capabilities_supports_audio_call() you should test capabilities with tp_capabilities_supports_audio_video_call().

See the documentation of tp_account_channel_request_new_audio_call() for details of how to set the target (contact, chatroom etc.) for the call.

Since 0.19.0

tp_account_channel_request_new_file_transfer ()

TpAccountChannelRequest * tp_account_channel_request_new_file_transfer
                                                        (TpAccount *account,
                                                         const gchar *filename,
                                                         const gchar *mime_type,
                                                         guint64 size,
                                                         gint64 user_action_time);

Convenience function to create a new TpAccountChannelRequest object, which will yield a FileTransfer channel to send a file to a contact.

After creating the request, you will also need to set the "target" of the channel by calling one of the following functions:

Since 0.19.0

tp_account_channel_request_set_file_transfer_description ()

void                tp_account_channel_request_set_file_transfer_description
                                                        (TpAccountChannelRequest *self,
                                                         const gchar *description);

Configure this channel request to provide the recipient of the file with the given description.

If file descriptions are not supported by the protocol, or if this method is used on a request that is not actually a file transfer, the channel request will fail. Use tp_capabilities_supports_file_transfer_description() to determine whether outgoing file transfers can have a description.

This function can't be called once self has been used to request a channel.

Since 0.19.0

tp_account_channel_request_set_file_transfer_initial_offset ()

void                tp_account_channel_request_set_file_transfer_initial_offset
                                                        (TpAccountChannelRequest *self,
                                                         guint64 offset);

Configure this channel request to inform the recipient of the file that this channel will not send the first offset bytes of the file. In some protocols, this can be used to resume an interrupted transfer.

If this method is not called, the default is to start from the beginning of the file (equivalent to offset = 0).

If offsets greater than 0 are not supported by the protocol, or if this method is used on a request that is not actually a file transfer, the channel request will fail. Use tp_capabilities_supports_file_transfer_initial_offset() to determine whether offsets greater than 0 are available.

This function can't be called once self has been used to request a channel.

Since 0.19.0

tp_account_channel_request_set_file_transfer_timestamp ()

void                tp_account_channel_request_set_file_transfer_timestamp
                                                        (TpAccountChannelRequest *self,
                                                         guint64 timestamp);

Configure this channel request to accompany the file transfer with the given modification timestamp for the file.

If file timestamps are not supported by the protocol, or if this method is used on a request that is not actually a file transfer, the channel request will fail. Use tp_capabilities_supports_file_transfer_date() to determine whether outgoing file transfers can have a timestamp.

This function can't be called once self has been used to request a channel.

Since 0.19.0

tp_account_channel_request_set_file_transfer_uri ()

void                tp_account_channel_request_set_file_transfer_uri
                                                        (TpAccountChannelRequest *self,
                                                         const gchar *uri);

Configure this channel request to provide other local Telepathy components with the URI of the file being sent. Unlike most properties on a file transfer channel, this information is not sent to the recipient of the file; instead, it is signalled on D-Bus for use by other Telepathy components.

The URI should usually be a file URI as defined by RFC 1738 §3.10 (for instance, file:///path/to/file or file://localhost/path/to/file). If a remote resource is being transferred to a contact, it may have a different scheme, such as http.

Even if this method is used, the connection manager will not read the file from disk: the handler for the channel is still responsible for streaming the file. However, providing the URI allows a local logger to log which file was transferred, for instance.

If this functionality is not supported by the connection manager, or if this method is used on a request that is not actually a file transfer, the channel request will fail. Use tp_capabilities_supports_file_transfer_uri() to determine whether outgoing file transfers can have a URI.

This function can't be called once self has been used to request a channel.

Since 0.19.0

tp_account_channel_request_set_file_transfer_hash ()

void                tp_account_channel_request_set_file_transfer_hash
                                                        (TpAccountChannelRequest *self,
                                                         TpFileHashType hash_type,
                                                         const gchar *hash);

Configure this channel request to accompany the file transfer with the hash of the file.

This function can't be called once self has been used to request a channel.

Since 0.23.2

tp_account_channel_request_new_stream_tube ()

TpAccountChannelRequest * tp_account_channel_request_new_stream_tube
                                                        (TpAccount *account,
                                                         const gchar *service,
                                                         gint64 user_action_time);

Convenience function to create a new TpAccountChannelRequest object, which will yield a StreamTube channel.

After creating the request, you will also need to set the "target" of the channel by calling one of the following functions:

Since 0.23.2

tp_account_channel_request_new_dbus_tube ()

TpAccountChannelRequest * tp_account_channel_request_new_dbus_tube
                                                        (TpAccount *account,
                                                         const gchar *service_name,
                                                         gint64 user_action_time);

Convenience function to create a new TpAccountChannelRequest object, which will yield a DBusTube channel.

After creating the request, you will also need to set the "target" of the channel by calling one of the following functions:

Since 0.23.2

tp_account_channel_request_create_and_handle_channel_async ()

void                tp_account_channel_request_create_and_handle_channel_async
                                                        (TpAccountChannelRequest *self,
                                                         GCancellable *cancellable,
                                                         GAsyncReadyCallback callback,
                                                         gpointer user_data);

Asynchronously calls CreateChannel on the ChannelDispatcher to create a channel with the properties defined in "request" that you are going to handle yourself. When the operation is finished, callback will be called. You can then call tp_account_channel_request_create_and_handle_channel_finish() to get the result of the operation.

(Behind the scenes, this works by creating a temporary TpBaseClient, then acting like tp_account_channel_request_create_channel_async() with the temporary TpBaseClient as the preferred_handler.)

The caller is responsible for closing the channel with tp_cli_channel_call_close() when it has finished handling it.

Since 0.11.12

tp_account_channel_request_create_and_handle_channel_finish ()

TpChannel *         tp_account_channel_request_create_and_handle_channel_finish
                                                        (TpAccountChannelRequest *self,
                                                         GAsyncResult *result,
                                                         TpHandleChannelsContext **context,
                                                         GError **error);

Finishes an async channel creation started using tp_account_channel_request_create_and_handle_channel_async().

See tp_account_channel_request_ensure_and_handle_channel_finish() for details of how context can be used.

The caller is responsible for closing the channel with tp_cli_channel_call_close() when it has finished handling it.

Since 0.11.12

tp_account_channel_request_ensure_and_handle_channel_async ()

void                tp_account_channel_request_ensure_and_handle_channel_async
                                                        (TpAccountChannelRequest *self,
                                                         GCancellable *cancellable,
                                                         GAsyncReadyCallback callback,
                                                         gpointer user_data);

Asynchronously calls EnsureChannel on the ChannelDispatcher to create a channel with the properties defined in "request" that you are going to handle yourself. When the operation is finished, callback will be called. You can then call tp_account_channel_request_ensure_and_handle_channel_finish() to get the result of the operation.

If the channel already exists and is already being handled, or if a newly created channel is sent to a different handler, this operation will fail with the error TP_ERROR_NOT_YOURS. The other handler will be notified that the channel was requested again (for instance with "re-handled", TpBaseClientClassHandleChannelsImpl or "callback"), and can move its window to the foreground, if applicable.

(Behind the scenes, this works by creating a temporary TpBaseClient, then acting like tp_account_channel_request_ensure_channel_async() with the temporary TpBaseClient as the preferred_handler.)

Since 0.11.12

tp_account_channel_request_ensure_and_handle_channel_finish ()

TpChannel *         tp_account_channel_request_ensure_and_handle_channel_finish
                                                        (TpAccountChannelRequest *self,
                                                         GAsyncResult *result,
                                                         TpHandleChannelsContext **context,
                                                         GError **error);

Finishes an async channel creation started using tp_account_channel_request_ensure_and_handle_channel_async().

If the channel already exists and is already being handled, or if a newly created channel is sent to a different handler, this operation will fail with the error TP_ERROR_NOT_YOURS.

context can be used to obtain extensible information about the channel via tp_handle_channels_context_get_handler_info(), and any similar methods that are added in future. It is not valid for the caller of this method to call tp_handle_channels_context_accept(), tp_handle_channels_context_delay() or tp_handle_channels_context_fail().

Since 0.11.12

tp_account_channel_request_create_channel_async ()

void                tp_account_channel_request_create_channel_async
                                                        (TpAccountChannelRequest *self,
                                                         const gchar *preferred_handler,
                                                         GCancellable *cancellable,
                                                         GAsyncReadyCallback callback,
                                                         gpointer user_data);

Asynchronously calls CreateChannel on the ChannelDispatcher to create a channel with the properties defined in "request" and let the ChannelDispatcher dispatch it to an handler. callback will be called when the channel has been created and dispatched, or the request has failed. You can then call tp_account_channel_request_create_channel_finish() to get the result of the operation.

Since 0.11.12

tp_account_channel_request_create_channel_finish ()

gboolean            tp_account_channel_request_create_channel_finish
                                                        (TpAccountChannelRequest *self,
                                                         GAsyncResult *result,
                                                         GError **error);

Finishes an async channel creation started using tp_account_channel_request_create_channel_async().

Since 0.11.12

tp_account_channel_request_ensure_channel_async ()

void                tp_account_channel_request_ensure_channel_async
                                                        (TpAccountChannelRequest *self,
                                                         const gchar *preferred_handler,
                                                         GCancellable *cancellable,
                                                         GAsyncReadyCallback callback,
                                                         gpointer user_data);

Asynchronously calls EnsureChannel on the ChannelDispatcher to create a channel with the properties defined in "request" and let the ChannelDispatcher dispatch it to an handler.

If a suitable channel already existed, its handler will be notified that the channel was requested again (for instance with "re-handled", TpBaseClientClassHandleChannelsImpl or "callback", if it is implemented using Telepathy-GLib), so that it can re-present the window to the user, for example. Otherwise, a new channel will be created and dispatched to a handler.

callback will be called when an existing channel's handler has been notified, a new channel has been created and dispatched, or the request has failed. You can then call tp_account_channel_request_ensure_channel_finish() to get the result of the operation.

Since 0.11.12

tp_account_channel_request_ensure_channel_finish ()

gboolean            tp_account_channel_request_ensure_channel_finish
                                                        (TpAccountChannelRequest *self,
                                                         GAsyncResult *result,
                                                         GError **error);

Finishes an async channel creation started using tp_account_channel_request_ensure_channel_async().

Since 0.11.12

tp_account_channel_request_create_and_observe_channel_async ()

void                tp_account_channel_request_create_and_observe_channel_async
                                                        (TpAccountChannelRequest *self,
                                                         const gchar *preferred_handler,
                                                         GCancellable *cancellable,
                                                         GAsyncReadyCallback callback,
                                                         gpointer user_data);

Asynchronously calls CreateChannel on the ChannelDispatcher to create a channel with the properties defined in "request" and let the ChannelDispatcher dispatch it to an handler. callback will be called when the channel has been created and dispatched, or the request has failed. You can then call tp_account_channel_request_create_channel_finish() to get the result of the operation and a TpChannel representing the channel which has been created. Note that you are not handling this channel and so should interact with the channel as an Observer. See the Telepathy book for details about how clients should interact with channels.

Since 0.13.14

tp_account_channel_request_create_and_observe_channel_finish ()

TpChannel *         tp_account_channel_request_create_and_observe_channel_finish
                                                        (TpAccountChannelRequest *self,
                                                         GAsyncResult *result,
                                                         GError **error);

Finishes an async channel creation started using tp_account_channel_request_create_and_observe_channel_async().

Since 0.13.14

tp_account_channel_request_ensure_and_observe_channel_async ()

void                tp_account_channel_request_ensure_and_observe_channel_async
                                                        (TpAccountChannelRequest *self,
                                                         const gchar *preferred_handler,
                                                         GCancellable *cancellable,
                                                         GAsyncReadyCallback callback,
                                                         gpointer user_data);

Asynchronously calls EnsureChannel on the ChannelDispatcher to create a channel with the properties defined in "request" and let the ChannelDispatcher dispatch it to an handler. callback will be called when the channel has been created and dispatched, or the request has failed. You can then call tp_account_channel_request_create_channel_finish() to get the result of the operation and a TpChannel representing the channel which has been created. Note that you are not handling this channel and so should interact with the channel as an Observer. See the Telepathy book for details about how clients should interact with channels.

If a suitable channel already existed, its handler will be notified that the channel was requested again (for instance with "re-handled", TpBaseClientClassHandleChannelsImpl or "callback", if it is implemented using Telepathy-GLib), so that it can re-present the window to the user, for example. Otherwise, a new channel will be created and dispatched to a handler.

Since 0.13.14

tp_account_channel_request_ensure_and_observe_channel_finish ()

TpChannel *         tp_account_channel_request_ensure_and_observe_channel_finish
                                                        (TpAccountChannelRequest *self,
                                                         GAsyncResult *result,
                                                         GError **error);

Finishes an async channel creation started using tp_account_channel_request_create_and_observe_channel_async().

Since 0.13.14

tp_account_channel_request_set_channel_factory ()

void                tp_account_channel_request_set_channel_factory
                                                        (TpAccountChannelRequest *self,
                                                         TpClientChannelFactory *factory);

Set factory as the TpClientChannelFactory that will be used to create the channel requested by self. By default TpAutomaticProxyFactory is used.

This function can't be called once self has been used to request a channel.

Since 0.13.2

tp_account_channel_request_get_channel_request ()

TpChannelRequest *  tp_account_channel_request_get_channel_request
                                                        (TpAccountChannelRequest *self);

Return the "channel-request" property

Since 0.13.13

tp_account_channel_request_set_hint ()

void                tp_account_channel_request_set_hint (TpAccountChannelRequest *self,
                                                         const gchar *key,
                                                         GVariant *value);

Set additional information about the channel request, which will be used in the resulting request's "hints" property.

This function can't be called once self has been used to request a channel.

Since 0.19.8

tp_account_channel_request_set_hints ()

void                tp_account_channel_request_set_hints
                                                        (TpAccountChannelRequest *self,
                                                         GHashTable *hints);

Set additional information about the channel request, which will be used as the value for the resulting request's "hints" property.

This function can't be called once self has been used to request a channel.

In high-level language bindings, use tp_account_channel_request_set_hint() instead.

Since 0.13.14

tp_account_channel_request_set_delegate_to_preferred_handler ()

void                tp_account_channel_request_set_delegate_to_preferred_handler
                                                        (TpAccountChannelRequest *self,
                                                         gboolean delegate);

If delegate is TRUE, asks to the client currently handling the channels to delegate them to the preferred handler (passed when calling tp_account_channel_request_ensure_channel_async() for example).

This function can't be called once self has been used to request a channel.

Since 0.15.3

TpAccountChannelRequestDelegatedChannelCb ()

void                (*TpAccountChannelRequestDelegatedChannelCb)
                                                        (TpAccountChannelRequest *request,
                                                         TpChannel *channel,
                                                         gpointer user_data);

Called when a client asked us to delegate channel to another Handler. When this function is called you are no longer handling channel.

Since 0.15.3

tp_account_channel_request_set_delegated_channel_callback ()

void                tp_account_channel_request_set_delegated_channel_callback
                                                        (TpAccountChannelRequest *self,
                                                         TpAccountChannelRequestDelegatedChannelCb callback,
                                                         gpointer user_data,
                                                         GDestroyNotify destroy);

Turn on support for the org.freedesktop.Telepathy.ChannelRequest.DelegateToPreferredHandler hint.

When receiving a request containing this hint, self will automatically delegate the channel to the preferred handler of the request and then call callback to inform the client that it is no longer handling this channel.

callback may be called any time after (and only after) requesting and handling the channel (i.e. you have called create_and_handle or ensure_and_handle).

This function can't be called once self has been used to request a channel.

See also: tp_base_client_set_delegated_channels_callback()

Since 0.15.3

The "account" property

  "account"                  TpAccount*            : Read / Write / Construct Only

The TpAccount used to request the channel. Read-only except during construction.

This property can't be NULL.

Since 0.11.12

The "channel-request" property

  "channel-request"          TpChannelRequest*     : Read

The TpChannelRequest used to request the channel, or NULL if the channel has not be requested yet.

This can be useful for example to compare with the TpChannelRequest objects received from the requests_satisfied argument of TpSimpleHandlerHandleChannelsImpl to check if the client is asked to handle the channel it just requested.

Note that the TpChannelRequest objects may be different while still representing the same ChannelRequest on D-Bus. You have to compare them using their object paths (tp_proxy_get_object_path()).

Since 0.13.13

The "request" property

  "request"                  GHashTable_gchararray+GValue_*  : Read / Write / Construct Only

The desired D-Bus properties for the channel, represented as a GHashTable where the keys are strings and the values are GValue.

When constructing a new object, one of "request" or "request-vardict" must be set to a non-NULL value, and the other must remain unspecified.

Since 0.11.12

The "request-vardict" property

  "request-vardict"          GVariant*             : Read / Write / Construct Only

The desired D-Bus properties for the channel.

When constructing a new object, one of "request" or "request-vardict" must be set to a non-NULL value, and the other must remain unspecified.

Allowed values: GVariant<a{sv}>

Default value: NULL

Since 0.19.10

The "user-action-time" property

  "user-action-time"         gint64                : Read / Write / Construct Only

The user action time that will be passed to the channel dispatcher when requesting the channel.

This may be the time at which user action occurred, or one of the special values TP_USER_ACTION_TIME_NOT_USER_ACTION or TP_USER_ACTION_TIME_CURRENT_TIME.

If TP_USER_ACTION_TIME_NOT_USER_ACTION, the action doesn't involve any user action. Clients should avoid stealing focus when presenting the channel.

If TP_USER_ACTION_TIME_CURRENT_TIME, clients SHOULD behave as though the user action happened at the current time, e.g. a client may request that its window gains focus.

On X11-based systems, GDK 2, GDK 3, Clutter 1.0 etc., tp_user_action_time_from_x11() can be used to convert an X11 timestamp to a Telepathy user action time.

If the channel request succeeds, this user action time will be passed on to the channel's handler. If the handler is a GUI, it may use tp_user_action_time_should_present() to decide whether to bring its window to the foreground.

Default value: 0

Since 0.11.12

The "re-handled" signal

void                user_function                      (TpAccountChannelRequest *self,
                                                        TpChannel               *channel,
                                                        gint64                   user_action_time,
                                                        TpHandleChannelsContext *context,
                                                        gpointer                 user_data)             : Has Details

Emitted when the channel created using self has been "re-handled".

This means that a Telepathy client has made another request for a matching channel using an "ensure" API like tp_account_channel_request_ensure_channel_async(), while the channel still exists. Instead of creating a new channel, the channel dispatcher notifies the existing handler of channel, resulting in this signal.

Most GUI handlers should respond to this signal by checking user_action_time, and if appropriate, moving to the foreground.

context can be used to obtain extensible information about the channel via tp_handle_channels_context_get_handler_info(), and any similar methods that are added in future. It is not valid for the receiver of this signal to call tp_handle_channels_context_accept(), tp_handle_channels_context_delay() or tp_handle_channels_context_fail().

Since 0.11.12