TpExportableChannel — interface representing channels with several standard properties


#include <telepathy-glib/exportable-channel.h>

void                (*TpExportableChannelFunc)          (TpExportableChannel *channel,
                                                         gpointer user_data);

Object Hierarchy



TpExportableChannel requires TpSvcChannel.


  "channel-destroyed"        gboolean              : Read
  "channel-properties"       GHashTable_gchararray+GValue_*  : Read
  "object-path"              gchar*                : Read / Write / Construct Only


This interface defines a set of channel properties on top of those of TpChannelIface. It's mainly used by TpChannelManager to represent the returned and managed channel objects.


TpExportableChannelFunc ()

void                (*TpExportableChannelFunc)          (TpExportableChannel *channel,
                                                         gpointer user_data);

A callback for functions which act on exportable channels.

channel : An object implementing the exportable channel interface
user_data : Arbitrary user-supplied data


typedef struct _TpExportableChannel TpExportableChannel;

Opaque typedef representing a channel with several standard properties.


typedef struct {
    GTypeInterface parent;
} TpExportableChannelIface;

The interface for TpExportableChannel objects.

GTypeInterface parent; The parent interface

Property Details

The "channel-destroyed" property

  "channel-destroyed"        gboolean              : Read

If true, the closed signal on the Channel interface indicates that the channel can go away.

If false, the closed signal indicates to the channel manager that the channel should appear to go away and be re-created, by emitting Closed followed by NewChannel. (This is to support the "respawning" of Text channels which are closed with unacknowledged messages.)

Default value: FALSE

The "channel-properties" property

  "channel-properties"       GHashTable_gchararray+GValue_*  : Read

The D-Bus properties to be announced in the NewChannels signal and in the Channels property, as a map from to GValue.

A channel's immutable properties are constant for its lifetime on the bus, so this property should only change when the closed signal is emitted (so that respawned channels can reappear on the bus with different properties). All of the D-Bus properties mentioned here should be exposed through the D-Bus properties interface; additional (possibly mutable) properties not included here may also be exposed via the D-Bus properties interface.

If the channel implementation uses TpDBusPropertiesMixin, this property can implemented using tp_dbus_properties_mixin_make_properties_hash as follows:

   g_value_take_boxed (value,
     tp_dbus_properties_mixin_make_properties_hash (object,
         // The spec says these properties MUST be included:
         TP_IFACE_CHANNEL, "TargetHandle",
         TP_IFACE_CHANNEL, "TargetHandleType",
         TP_IFACE_CHANNEL, "ChannelType",
         TP_IFACE_CHANNEL, "TargetID",
         TP_IFACE_CHANNEL, "Requested",
         // These aren't mandatory as of spec 0.17.17
         // (but they should be):
         TP_IFACE_CHANNEL, "InitiatorHandle",
         TP_IFACE_CHANNEL, "InitiatorID",
         TP_IFACE_CHANNEL, "Interfaces",
         // Perhaps your channel has some other immutable properties:
         TP_IFACE_CHANNEL_INTERFACE_MESSAGES, "SupportedContentTypes",
         // etc.

The "object-path" property

  "object-path"              gchar*                : Read / Write / Construct Only

The D-Bus object path used for this object on the bus. Read-only except during construction.

Default value: NULL

See Also

TpChannelIface, TpChannelManager, TpSvcChannel