TpGroupMixin

TpGroupMixin — a mixin implementation of the groups interface

Functions

Types and Values

Object Hierarchy


Includes

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

Description

This mixin can be added to a channel GObject class to implement the groups interface in a general way.

To use the group mixin, include a TpGroupMixinClass somewhere in your class structure and a TpGroupMixin somewhere in your instance structure, and call tp_group_mixin_class_init() from your class_init function, tp_group_mixin_init() from your init function or constructor, and tp_group_mixin_finalize() from your dispose or finalize function.

To use the group mixin as the implementation of TpSvcChannelInterfaceGroup1, call G_IMPLEMENT_INTERFACE (TP_TYPE_SVC_CHANNEL_INTERFACE_GROUP1, tp_group_mixin_iface_init) in the fourth argument to G_DEFINE_TYPE_WITH_CODE.

Since 0.5.13 you can also implement the group interface by forwarding all group operations to the group mixin of an associated object (mainly useful for old Tubes channels). To do this, call tp_external_group_mixin_init() in the constructor after the associated object has been set, tp_external_group_mixin_finalize() in the dispose or finalize function, and G_IMPLEMENT_INTERFACE (TP_TYPE_SVC_CHANNEL_INTERFACE_GROUP1, tp_external_group_mixin_iface_init) in the fourth argument to G_DEFINE_TYPE_WITH_CODE.

Since 0.7.10 you can also implement the properties of Group channels, by calling tp_group_mixin_init_dbus_properties() or tp_external_group_mixin_init_dbus_properties() (as appropriate).

Functions

TP_HAS_GROUP_MIXIN()

#define TP_HAS_GROUP_MIXIN(o) (TP_GROUP_MIXIN_OFFSET (o) != 0)

Parameters

o

a GObject instance

 

Returns

TRUE if o (or one of its parent classes) has the group mixin.

Since 0.13.9


TP_HAS_GROUP_MIXIN_CLASS()

#define TP_HAS_GROUP_MIXIN_CLASS(cls) (TP_GROUP_MIXIN_CLASS_OFFSET (cls) != 0)

Parameters

cls

a GObjectClass structure

 

Returns

TRUE if cls (or one of its parent classes) has the group mixin.

Since 0.13.9


TpGroupMixinAddMemberFunc ()

gboolean
(*TpGroupMixinAddMemberFunc) (GObject *obj,
                              TpHandle handle,
                              const gchar *message,
                              GError **error);

Signature of the callback used to add a member to the group. This should perform the necessary operations in the underlying IM protocol to cause the member to be added.

Parameters

obj

An object implementing the group interface with this mixin

 

handle

The handle of the contact to be added

 

message

A message to be sent if the protocol supports it

 

error

Used to return a Telepathy D-Bus error if FALSE is returned

 

Returns

TRUE on success, FALSE with error set on error


TpGroupMixinRemMemberFunc ()

gboolean
(*TpGroupMixinRemMemberFunc) (GObject *obj,
                              TpHandle handle,
                              const gchar *message,
                              GError **error);

Signature of the callback used to remove a member from the group. This should perform the necessary operations in the underlying IM protocol to cause the member to be removed.

Parameters

obj

An object implementing the group interface with this mixin

 

handle

The handle of the contact to be removed

 

message

A message to be sent if the protocol supports it

 

error

Used to return a Telepathy D-Bus error if FALSE is returned

 

Returns

TRUE on success, FALSE with error set on error


TpGroupMixinRemMemberWithReasonFunc ()

gboolean
(*TpGroupMixinRemMemberWithReasonFunc)
                               (GObject *obj,
                                TpHandle handle,
                                const gchar *message,
                                guint reason,
                                GError **error);

Signature of the callback used to remove a member from the group. This should perform the necessary operations in the underlying IM protocol to cause the member to be removed.

Set this with tp_group_mixin_class_set_remove_with_reason_func(), .

Parameters

obj

An object implementing the group interface with this mixin

 

handle

The handle of the contact to be removed

 

message

A message to be sent if the protocol supports it

 

reason

A TpChannelGroupChangeReason indicating the reason

 

error

Used to return a Telepathy D-Bus error if FALSE is returned

 

Returns

TRUE on success, FALSE with error set on error


tp_group_mixin_class_init ()

void
tp_group_mixin_class_init (GObjectClass *obj_cls,
                           glong offset,
                           TpGroupMixinAddMemberFunc add_func,
                           TpGroupMixinRemMemberFunc rem_func);

Configure the mixin for use with the given class.

Parameters

obj_cls

The class of an object implementing the group interface using this mixin

 

offset

The offset of the TpGroupMixinClass structure within the class structure

 

add_func

A callback to be used to add contacts to this group

 

rem_func

A callback to be used to remove contacts from this group. This must be NULL if you will subsequently call tp_group_mixin_class_set_remove_with_reason_func().

 

tp_group_mixin_class_allow_self_removal ()

void
tp_group_mixin_class_allow_self_removal
                               (GObjectClass *obj_cls);

Configure the mixin to allow attempts to remove the SelfHandle from this Group, even if the group flags would otherwise disallow this. The channel's TpGroupMixinRemMemberFunc or TpGroupMixinRemMemberWithReasonFunc will be called as usual for such attempts, and may make them fail with TP_ERROR_PERMISSION_DENIED if required.

This function should be called from the GObject class_init callback, after calling tp_group_mixin_class_init().

(Recent telepathy-spec changes make it valid to try to remove the self-handle at all times, regardless of group flags. However, if this was implemented automatically in TpGroupMixin, this would risk crashing connection manager implementations that assume that TpGroupMixin will enforce the group flags strictly. As a result, connection managers should call this function to indicate to the TpGroupMixin that it may call their removal callback with the self-handle regardless of flag settings.)

Parameters

obj_cls

The class of an object implementing the group interface using this mixin

 

Since 0.7.27


tp_group_mixin_class_set_remove_with_reason_func ()

void
tp_group_mixin_class_set_remove_with_reason_func
                               (GObjectClass *cls,
                                TpGroupMixinRemMemberWithReasonFunc func);

Set a callback to be used to implement RemoveMembers() and RemoveMembersWithReason(). If this function is called during class initialization, the given callback will be used instead of the remove callback passed to tp_group_mixin_class_init() (which must be NULL in this case).

Parameters

cls

The class of an object implementing the group interface using this mixin

 

func

A callback to be used to remove contacts from this group with a specified reason.

 

Since 0.5.13


tp_group_mixin_init ()

void
tp_group_mixin_init (GObject *obj,
                     glong offset,
                     TpHandleRepoIface *handle_repo,
                     TpHandle self_handle);

Initialize the mixin.

Since 0.99.1 obj must be a TpBaseChannel subclass.

Parameters

obj

An object implementing the group interface using this mixin

 

offset

The offset of the TpGroupMixin structure within the instance structure

 

handle_repo

The connection's handle repository for contacts

 

self_handle

The handle of the local user in this group, if any

 

tp_group_mixin_finalize ()

void
tp_group_mixin_finalize (GObject *obj);

Unreference handles and free resources used by this mixin.

Parameters

obj

An object implementing the group interface using this mixin

 

tp_group_mixin_get_self_handle ()

gboolean
tp_group_mixin_get_self_handle (GObject *obj,
                                guint *ret,
                                GError **error);

Set the guint pointed to by ret to the local user's handle in this group, or to 0 if the local user is not present in this group.

Parameters

obj

An object implementing the group mixin using this interface

 

ret

Used to return the local user's handle in this group

 

error

Unused

 

Returns

TRUE.


tp_group_mixin_get_group_flags ()

gboolean
tp_group_mixin_get_group_flags (GObject *obj,
                                guint *ret,
                                GError **error);

Set the guint pointed to by ret to this group's flags, to be interpreted according to TpChannelGroupFlags.

Parameters

obj

An object implementing the group mixin using this interface

 

ret

Used to return the flags

 

error

Unused

 

Returns

TRUE


tp_group_mixin_add_members ()

gboolean
tp_group_mixin_add_members (GObject *obj,
                            const GArray *contacts,
                            const gchar *message,
                            GError **error);

Request that the given contacts be added to the group as if in response to user action. If the group's flags prohibit this, raise PermissionDenied. If any of the handles is invalid, raise InvalidHandle. Otherwise attempt to add the contacts by calling the callbacks provided by the channel implementation.

Parameters

obj

An object implementing the group interface using this mixin

 

contacts

A GArray of guint representing contacts

 

message

A message associated with the addition request, if supported

 

error

Used to return an error if FALSE is returned

 

Returns

TRUE on success


tp_group_mixin_remove_members ()

gboolean
tp_group_mixin_remove_members (GObject *obj,
                               const GArray *contacts,
                               const gchar *message,
                               guint reason,
                               GError **error);

Request that the given contacts be removed from the group as if in response to user action. If the group's flags prohibit this, raise PermissionDenied. If any of the handles is invalid, raise InvalidHandle. If any of the handles is absent from the group, raise NotAvailable. Otherwise attempt to remove the contacts by calling the callbacks provided by the channel implementation.

Parameters

obj

An object implementing the group interface using this mixin

 

contacts

A GArray of guint representing contacts

 

message

A message to be sent to those contacts, if supported

 

reason

A TpChannelGroupChangeReason

 

error

Used to return an error if FALSE is returned

 

Returns

TRUE on success


tp_group_mixin_change_flags ()

void
tp_group_mixin_change_flags (GObject *obj,
                             TpChannelGroupFlags add,
                             TpChannelGroupFlags del);

Request a change to be made to the flags. If any flags were actually set or cleared, emits the GroupFlagsChanged signal with the changes.

It is an error to set any of the same bits in both add and del .

Changed in 0.7.7: the signal is not emitted if adding add and removing del had no effect on the existing group flags.

Parameters

obj

An object implementing the groups interface using this mixin

 

add

Flags to be added

 

del

Flags to be removed

 

tp_group_mixin_change_members ()

gboolean
tp_group_mixin_change_members (GObject *obj,
                               const TpIntset *add,
                               const TpIntset *del,
                               const TpIntset *add_local_pending,
                               const TpIntset *add_remote_pending,
                               GVariant *details);

Change the sets of members as given by the arguments, and emit the MembersChanged signal if the changes were not a no-op.

This function must be called in response to events on the underlying IM protocol, and must not be called in direct response to user input; it does not respect the permissions flags, but changes the group directly.

If any two of add, del, add_local_pending and add_remote_pending have a non-empty intersection, the result is undefined. Don't do that.

Each of the TpIntset arguments may be NULL, which is treated as equivalent to an empty set.

details may contain, among other entries, the well-known keys (and corresponding type, wrapped in a variant) defined by the Group.MembersChanged signal's specification; these include "actor" (a handle as G_VARIANT_TYPE_UINT32), "change-reason" (an element of TpChannelGroupChangeReason as G_VARIANT_TYPE_UINT32), "message" (G_VARIANT_TYPE_STRING), "error" (G_VARIANT_TYPE_STRING), "debug-message" (G_VARIANT_TYPE_STRING). If it is a floating reference, ownership is taken; if it is NULL, it is treated as an empty map.

Parameters

obj

An object implementing the group interface using this mixin

 

add

A set of contact handles to be added to the members (if not already present) and removed from local pending and remote pending (if present)

 

del

A set of contact handles to be removed from members, local pending or remote pending, wherever they are present

 

add_local_pending

A set of contact handles to be added to local pending, and removed from members and remote pending

 

add_remote_pending

A set of contact handles to be added to remote pending, and removed from members and local pending

 

details

a G_VARIANT_TYPE_VARDICT describing the change.

[allow-none]

Returns

TRUE if the group was changed and the MembersChanged signals were emitted; FALSE if nothing actually changed and the signals were suppressed.

Since 0.7.21


tp_group_mixin_add_handle_owner ()

void
tp_group_mixin_add_handle_owner (GObject *obj,
                                 TpHandle local_handle,
                                 TpHandle owner_handle);

Note that the given local handle is an alias within this group for the given globally-valid handle. It will be returned from subsequent GetHandleOwner queries where appropriate.

Changed in 0.7.10: The owner_handle may be 0. To comply with telepathy-spec 0.17.6, before adding any channel-specific handle to the members, local-pending members or remote-pending members, you must call either this function or tp_group_mixin_add_handle_owners().

Parameters

obj

A GObject implementing the group interface with this mixin

 

local_handle

A contact handle valid within this group (may not be 0)

 

owner_handle

A contact handle valid globally, or 0 if the owner of the local_handle is unknown

 

tp_group_mixin_iface_init ()

void
tp_group_mixin_iface_init (gpointer g_iface,
                           gpointer iface_data);

Fill in the vtable entries needed to implement the group interface using this mixin. This function should usually be called via G_IMPLEMENT_INTERFACE.

Parameters

g_iface

A TpSvcChannelInterfaceGroup1Class

 

iface_data

Unused

 

tp_group_mixin_add_handle_owners ()

void
tp_group_mixin_add_handle_owners (GObject *obj,
                                  GHashTable *local_to_owner_handle);

Note that the given local handles are aliases within this group for the given globally-valid handles.

To comply with telepathy-spec 0.17.6, before adding any channel-specific handle to the members, local-pending members or remote-pending members, you must call either this function or tp_group_mixin_add_handle_owner().

Parameters

obj

A GObject implementing the group interface with this mixin

 

local_to_owner_handle

A map from contact handles valid within this group (which may not be 0) to either contact handles valid globally, or 0 if the owner of the corresponding key is unknown; all handles are stored using GUINT_TO_POINTER

 

Since 0.7.10


tp_group_mixin_get_dbus_property ()

void
tp_group_mixin_get_dbus_property (GObject *object,
                                  GQuark interface,
                                  GQuark name,
                                  GValue *value,
                                  gpointer unused);

An implementation of TpDBusPropertiesMixinGetter which assumes that the object has the group mixin. It can only be used for the Group interface.

Parameters

object

An object with this mixin

 

interface

Must be TP_IFACE_QUARK_CHANNEL_INTERFACE_GROUP1

 

name

A quark representing the D-Bus property name, either "GroupFlags", "HandleOwners", "LocalPendingMembers", "Members", "RemotePendingMembers" or "SelfHandle"

 

value

A GValue pre-initialized to the right type, into which to put the value

 

unused

Ignored

 

Since 0.7.10


tp_group_mixin_init_dbus_properties ()

void
tp_group_mixin_init_dbus_properties (GObjectClass *cls);

Set up TpDBusPropertiesMixinClass to use this mixin's implementation of the Group interface's properties.

This uses tp_group_mixin_get_dbus_property() as the property getter and sets up a list of the supported properties for it. Having called this, you should add TP_CHANNEL_GROUP_FLAG_PROPERTIES to any channels of this class with tp_group_mixin_change_flags() to indicate that the DBus properties are available.

Parameters

cls

The class of an object with this mixin

 

Since 0.7.10


tp_group_mixin_change_self_handle ()

void
tp_group_mixin_change_self_handle (GObject *obj,
                                   TpHandle new_self_handle);

Change the self-handle for this group to the given value.

Parameters

obj

An object implementing the group interface using this mixin

 

new_self_handle

The new self-handle for this group

 

tp_external_group_mixin_iface_init ()

void
tp_external_group_mixin_iface_init (gpointer g_iface,
                                    gpointer iface_data);

Fill in the vtable entries needed to implement the group interface using the group mixin of another object. This function should usually be called via G_IMPLEMENT_INTERFACE.

Parameters

g_iface

A TpSvcChannelInterfaceGroup1Class

 

iface_data

Unused

 

Since 0.5.13


tp_external_group_mixin_init ()

void
tp_external_group_mixin_init (GObject *obj,
                              GObject *obj_with_mixin);

Fill in the qdata needed to implement the group interface using the group mixin of another object. This function should usually be called in the instance constructor.

Parameters

obj

An object implementing the groups interface using an external group mixin

 

obj_with_mixin

A GObject with the group mixin

 

Since 0.5.13


tp_external_group_mixin_finalize ()

void
tp_external_group_mixin_finalize (GObject *obj);

Remove the external group mixin. This function should usually be called in the dispose or finalize function.

Parameters

obj

An object implementing the groups interface using an external group mixin

 

Since 0.5.13


tp_external_group_mixin_init_dbus_properties ()

void
tp_external_group_mixin_init_dbus_properties
                               (GObjectClass *cls);

Set up TpDBusPropertiesMixinClass to use this mixin's implementation of the Group interface's properties.

This uses tp_group_mixin_get_dbus_property() as the property getter and sets up a list of the supported properties for it. Having called this, you should add TP_CHANNEL_GROUP_FLAG_PROPERTIES to channels containing the mixin used by this class with tp_group_mixin_change_flags() to indicate that the DBus properties are available.

Parameters

cls

The class of an object with this mixin

 

Since 0.7.10


tp_external_group_mixin_get_dbus_property ()

void
tp_external_group_mixin_get_dbus_property
                               (GObject *object,
                                GQuark interface,
                                GQuark name,
                                GValue *value,
                                gpointer unused);

An implementation of TpDBusPropertiesMixinGetter which assumes that the object has the external group mixin. It can only be used for the Group interface.

Parameters

object

An object with this mixin

 

interface

Must be TP_IFACE_QUARK_CHANNEL_INTERFACE_GROUP1

 

name

A quark representing the D-Bus property name, either "GroupFlags", "HandleOwners", "LocalPendingMembers", "Members", "RemotePendingMembers" or "SelfHandle"

 

value

A GValue pre-initialized to the right type, into which to put the value

 

unused

Ignored

 

Since 0.7.10

Types and Values

struct TpGroupMixin

struct TpGroupMixin {
  TpHandleRepoIface *handle_repo;
  TpHandle self_handle;

  TpChannelGroupFlags group_flags;

  TpHandleSet *members;
  TpHandleSet *local_pending;
  TpHandleSet *remote_pending;

  TpGroupMixinPrivate *priv;
};

Structure representing the group mixin as used in a particular class. To be placed in the implementation's instance structure.

All fields should be considered read-only.

Members

TpHandleRepoIface *handle_repo;

The connection's contact handle repository

 

TpHandle self_handle;

The local user's handle within this group, or 0 if none. Set using tp_group_mixin_init() and tp_group_mixin_change_self_handle().

 

TpChannelGroupFlags group_flags;

This group's flags. Set using tp_group_mixin_change_flags(); defaults to 0.

 

TpHandleSet *members;

The members of the group. Alter using tp_group_mixin_change_members().

 

TpHandleSet *local_pending;

Members awaiting the local user's approval to join the group. Alter using tp_group_mixin_change_members().

 

TpHandleSet *remote_pending;

Members awaiting remote (e.g. remote user or server) approval to join the group. Alter using tp_group_mixin_change_members().

 

TpGroupMixinPrivate *priv;

Pointer to opaque private data

 

struct TpGroupMixinClass

struct TpGroupMixinClass {
  TpGroupMixinAddMemberFunc add_member;
  TpGroupMixinRemMemberFunc remove_member;
  TpGroupMixinClassPrivate *priv;
};

Structure representing the group mixin as used in a particular class. To be placed in the implementation's class structure.

Initialize this with tp_group_mixin_class_init().

All fields should be considered read-only.

Members

TpGroupMixinAddMemberFunc add_member;

The add-member function that was passed to tp_group_mixin_class_init()

 

TpGroupMixinRemMemberFunc remove_member;

The remove-member function that was passed to tp_group_mixin_class_init()

 

TpGroupMixinClassPrivate *priv;

Pointer to opaque private data

 

See Also

TpSvcChannelInterfaceGroup1