Struct gio::DBusConnection

source ·
pub struct DBusConnection { /* private fields */ }
Expand description

The GDBusConnection type is used for D-Bus connections to remote peers such as a message buses.

It is a low-level API that offers a lot of flexibility. For instance, it lets you establish a connection over any transport that can by represented as a IOStream.

This class is rarely used directly in D-Bus clients. If you are writing a D-Bus client, it is often easier to use the bus_own_name(), bus_watch_name() or DBusProxy::for_bus() APIs.

As an exception to the usual GLib rule that a particular object must not be used by two threads at the same time, GDBusConnections methods may be called from any thread. This is so that bus_get() and bus_get_sync() can safely return the same GDBusConnection when called from any thread.

Most of the ways to obtain a GDBusConnection automatically initialize it (i.e. connect to D-Bus): for instance, new() and bus_get(), and the synchronous versions of those methods, give you an initialized connection. Language bindings for GIO should use Initable::new() or [AsyncInitable::new_async()][crate::AsyncInitable::new_async()], which also initialize the connection.

If you construct an uninitialized GDBusConnection, such as via glib::Object::new(), you must initialize it via InitableExt::init() or AsyncInitableExt::init_async() before using its methods or properties. Calling methods or accessing properties on a GDBusConnection that has not completed initialization successfully is considered to be invalid, and leads to undefined behaviour. In particular, if initialization fails with a GError, the only valid thing you can do with that GDBusConnection is to free it with GObject::Object::unref().

§An example D-Bus server

Here is an example for a D-Bus server: gdbus-example-server.c

§An example for exporting a subtree

Here is an example for exporting a subtree: gdbus-example-subtree.c

§An example for file descriptor passing

Here is an example for passing UNIX file descriptors: gdbus-unix-fd-client.c

§An example for exporting a GObject

Here is an example for exporting a #GObject: gdbus-example-export.c

§Properties

§address

A D-Bus address specifying potential endpoints that can be used when establishing the connection.

Writeable | Construct Only

§authentication-observer

A #GDBusAuthObserver object to assist in the authentication process or None.

Writeable | Construct Only

§capabilities

Flags from the #GDBusCapabilityFlags enumeration representing connection features negotiated with the other peer.

Readable

§closed

A boolean specifying whether the connection has been closed.

Readable

§exit-on-close

A boolean specifying whether the process will be terminated (by calling raise(SIGTERM)) if the connection is closed by the remote peer.

Note that #GDBusConnection objects returned by g_bus_get_finish() and g_bus_get_sync() will (usually) have this property set to true.

Readable | Writeable

§flags

Flags from the #GDBusConnectionFlags enumeration.

Readable | Writeable | Construct Only

§guid

The GUID of the peer performing the role of server when authenticating.

If you are constructing a #GDBusConnection and pass DBusConnectionFlags::AUTHENTICATION_SERVER in the #GDBusConnection:flags property then you must also set this property to a valid guid.

If you are constructing a #GDBusConnection and pass DBusConnectionFlags::AUTHENTICATION_CLIENT in the #GDBusConnection:flags property you will be able to read the GUID of the other peer here after the connection has been successfully initialized.

Note that the D-Bus specification uses the term ‘UUID’ to refer to this, whereas GLib consistently uses the term ‘GUID’ for historical reasons.

Despite its name, the format of #GDBusConnection:guid does not follow RFC 4122 or the Microsoft GUID format.

Readable | Writeable | Construct Only

§stream

The underlying #GIOStream used for I/O.

If this is passed on construction and is a #GSocketConnection, then the corresponding #GSocket will be put into non-blocking mode.

While the #GDBusConnection is active, it will interact with this stream from a worker thread, so it is not safe to interact with the stream directly.

Readable | Writeable | Construct Only

§unique-name

The unique name as assigned by the message bus or None if the connection is not open or not a message bus connection.

Readable

§Signals

§closed

Emitted when the connection is closed.

The cause of this event can be

  • If g_dbus_connection_close() is called. In this case @remote_peer_vanished is set to false and @error is None.

  • If the remote peer closes the connection. In this case @remote_peer_vanished is set to true and @error is set.

  • If the remote peer sends invalid or malformed data. In this case @remote_peer_vanished is set to false and @error is set.

Upon receiving this signal, you should give up your reference to @connection. You are guaranteed that this signal is emitted only once.

§Implements

[trait@glib::ObjectExt], AsyncInitableExt, InitableExt

Implementations§

source§

impl DBusConnection

source

pub fn register_object<MethodCall, SetProperty, GetProperty>( &self, object_path: &str, interface_info: &DBusInterfaceInfo, method_call: MethodCall, get_property: GetProperty, set_property: SetProperty ) -> Result<RegistrationId, Error>
where MethodCall: Fn(DBusConnection, &str, &str, &str, &str, Variant, DBusMethodInvocation) + Send + Sync + 'static, GetProperty: Fn(DBusConnection, &str, &str, &str, &str) -> Variant + Send + Sync + 'static, SetProperty: Fn(DBusConnection, &str, &str, &str, &str, Variant) -> bool + Send + Sync + 'static,

Registers callbacks for exported objects at @object_path with the D-Bus interface that is described in @interface_info.

Calls to functions in @vtable (and @user_data_free_func) will happen in the [thread-default main context][g-main-context-push-thread-default] of the thread you are calling this method from.

Note that all #GVariant values passed to functions in @vtable will match the signature given in @interface_info - if a remote caller passes incorrect values, the org.freedesktop.DBus.Error.InvalidArgs is returned to the remote caller.

Additionally, if the remote caller attempts to invoke methods or access properties not mentioned in @interface_info the org.freedesktop.DBus.Error.UnknownMethod resp. org.freedesktop.DBus.Error.InvalidArgs errors are returned to the caller.

It is considered a programming error if the #GDBusInterfaceGetPropertyFunc function in @vtable returns a #GVariant of incorrect type.

If an existing callback is already registered at @object_path and @interface_name, then @error is set to IOErrorEnum::Exists.

GDBus automatically implements the standard D-Bus interfaces org.freedesktop.DBus.Properties, org.freedesktop.DBus.Introspectable and org.freedesktop.Peer, so you don’t have to implement those for the objects you export. You can implement org.freedesktop.DBus.Properties yourself, e.g. to handle getting and setting of properties asynchronously.

Note that the reference count on @interface_info will be incremented by 1 (unless allocated statically, e.g. if the reference count is -1, see g_dbus_interface_info_ref()) for as long as the object is exported. Also note that @vtable will be copied.

See this [server][gdbus-server] for an example of how to use this method.

§object_path

the object path to register at

§interface_info

introspection data for the interface

§vtable

a #GDBusInterfaceVTable to call into or None

§Returns

0 if @error is set, otherwise a registration id (never 0) that can be used with g_dbus_connection_unregister_object()

source

pub fn unregister_object( &self, registration_id: RegistrationId ) -> Result<(), BoolError>

Unregisters an object.

§registration_id

a registration id obtained from g_dbus_connection_register_object()

§Returns

true if the object was unregistered, false otherwise

source

pub fn export_action_group<P: IsA<ActionGroup>>( &self, object_path: &str, action_group: &P ) -> Result<ActionGroupExportId, Error>

Exports @action_group on @self at @object_path.

The implemented D-Bus API should be considered private. It is subject to change in the future.

A given object path can only have one action group exported on it. If this constraint is violated, the export will fail and 0 will be returned (with @error set accordingly).

You can unexport the action group using g_dbus_connection_unexport_action_group() with the return value of this function.

The thread default main context is taken at the time of this call. All incoming action activations and state change requests are reported from this context. Any changes on the action group that cause it to emit signals must also come from this same context. Since incoming action activations and state change requests are rather likely to cause changes on the action group, this effectively limits a given action group to being exported from only one main context.

§object_path

a D-Bus object path

§action_group

a #GActionGroup

§Returns

the ID of the export (never zero), or 0 in case of failure

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pub fn unexport_action_group(&self, export_id: ActionGroupExportId)

Reverses the effect of a previous call to g_dbus_connection_export_action_group().

It is an error to call this function with an ID that wasn’t returned from g_dbus_connection_export_action_group() or to call it with the same ID more than once.

§export_id

the ID from g_dbus_connection_export_action_group()

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pub fn export_menu_model<P: IsA<MenuModel>>( &self, object_path: &str, menu: &P ) -> Result<MenuModelExportId, Error>

Exports @menu on @self at @object_path.

The implemented D-Bus API should be considered private. It is subject to change in the future.

An object path can only have one menu model exported on it. If this constraint is violated, the export will fail and 0 will be returned (with @error set accordingly).

Exporting menus with sections containing more than G_MENU_EXPORTER_MAX_SECTION_SIZE items is not supported and results in undefined behavior.

You can unexport the menu model using g_dbus_connection_unexport_menu_model() with the return value of this function.

§object_path

a D-Bus object path

a #GMenuModel

§Returns

the ID of the export (never zero), or 0 in case of failure

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pub fn unexport_menu_model(&self, export_id: MenuModelExportId)

Reverses the effect of a previous call to g_dbus_connection_export_menu_model().

It is an error to call this function with an ID that wasn’t returned from g_dbus_connection_export_menu_model() or to call it with the same ID more than once.

§export_id

the ID from g_dbus_connection_export_menu_model()

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pub fn add_filter<P: Fn(&DBusConnection, &DBusMessage, bool) -> Option<DBusMessage> + 'static>( &self, filter_function: P ) -> FilterId

Adds a message filter. Filters are handlers that are run on all incoming and outgoing messages, prior to standard dispatch. Filters are run in the order that they were added. The same handler can be added as a filter more than once, in which case it will be run more than once. Filters added during a filter callback won’t be run on the message being processed. Filter functions are allowed to modify and even drop messages.

Note that filters are run in a dedicated message handling thread so they can’t block and, generally, can’t do anything but signal a worker thread. Also note that filters are rarely needed - use API such as g_dbus_connection_send_message_with_reply(), g_dbus_connection_signal_subscribe() or g_dbus_connection_call() instead.

If a filter consumes an incoming message the message is not dispatched anywhere else - not even the standard dispatch machinery (that API such as g_dbus_connection_signal_subscribe() and g_dbus_connection_send_message_with_reply() relies on) will see the message. Similarly, if a filter consumes an outgoing message, the message will not be sent to the other peer.

If @user_data_free_func is non-None, it will be called (in the thread-default main context of the thread you are calling this method from) at some point after @user_data is no longer needed. (It is not guaranteed to be called synchronously when the filter is removed, and may be called after @self has been destroyed.)

§filter_function

a filter function

§Returns

a filter identifier that can be used with g_dbus_connection_remove_filter()

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pub fn remove_filter(&self, filter_id: FilterId)

Removes a filter.

Note that since filters run in a different thread, there is a race condition where it is possible that the filter will be running even after calling g_dbus_connection_remove_filter(), so you cannot just free data that the filter might be using. Instead, you should pass a #GDestroyNotify to g_dbus_connection_add_filter(), which will be called when it is guaranteed that the data is no longer needed.

§filter_id

an identifier obtained from g_dbus_connection_add_filter()

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pub fn signal_subscribe<P: Fn(&DBusConnection, &str, &str, &str, &str, &Variant) + 'static>( &self, sender: Option<&str>, interface_name: Option<&str>, member: Option<&str>, object_path: Option<&str>, arg0: Option<&str>, flags: DBusSignalFlags, callback: P ) -> SignalSubscriptionId

Subscribes to signals on @self and invokes @callback whenever the signal is received. Note that @callback will be invoked in the [thread-default main context][g-main-context-push-thread-default] of the thread you are calling this method from.

If @self is not a message bus connection, @sender must be None.

If @sender is a well-known name note that @callback is invoked with the unique name for the owner of @sender, not the well-known name as one would expect. This is because the message bus rewrites the name. As such, to avoid certain race conditions, users should be tracking the name owner of the well-known name and use that when processing the received signal.

If one of DBusSignalFlags::MATCH_ARG0_NAMESPACE or DBusSignalFlags::MATCH_ARG0_PATH are given, @arg0 is interpreted as part of a namespace or path. The first argument of a signal is matched against that part as specified by D-Bus.

If @user_data_free_func is non-None, it will be called (in the thread-default main context of the thread you are calling this method from) at some point after @user_data is no longer needed. (It is not guaranteed to be called synchronously when the signal is unsubscribed from, and may be called after @self has been destroyed.)

As @callback is potentially invoked in a different thread from where it’s emitted, it’s possible for this to happen after g_dbus_connection_signal_unsubscribe() has been called in another thread. Due to this, @user_data should have a strong reference which is freed with @user_data_free_func, rather than pointing to data whose lifecycle is tied to the signal subscription. For example, if a #GObject is used to store the subscription ID from g_dbus_connection_signal_subscribe(), a strong reference to that #GObject must be passed to @user_data, and g_object_unref() passed to @user_data_free_func. You are responsible for breaking the resulting reference count cycle by explicitly unsubscribing from the signal when dropping the last external reference to the #GObject. Alternatively, a weak reference may be used.

It is guaranteed that if you unsubscribe from a signal using g_dbus_connection_signal_unsubscribe() from the same thread which made the corresponding g_dbus_connection_signal_subscribe() call, @callback will not be invoked after g_dbus_connection_signal_unsubscribe() returns.

The returned subscription identifier is an opaque value which is guaranteed to never be zero.

This function can never fail.

§sender

sender name to match on (unique or well-known name) or None to listen from all senders

§interface_name

D-Bus interface name to match on or None to match on all interfaces

§member

D-Bus signal name to match on or None to match on all signals

§object_path

object path to match on or None to match on all object paths

§arg0

contents of first string argument to match on or None to match on all kinds of arguments

§flags

#GDBusSignalFlags describing how arg0 is used in subscribing to the signal

§callback

callback to invoke when there is a signal matching the requested data

§Returns

a subscription identifier that can be used with g_dbus_connection_signal_unsubscribe()

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pub fn signal_unsubscribe(&self, subscription_id: SignalSubscriptionId)

Unsubscribes from signals.

Note that there may still be D-Bus traffic to process (relating to this signal subscription) in the current thread-default #GMainContext after this function has returned. You should continue to iterate the #GMainContext until the #GDestroyNotify function passed to g_dbus_connection_signal_subscribe() is called, in order to avoid memory leaks through callbacks queued on the #GMainContext after it’s stopped being iterated. Alternatively, any idle source with a priority lower than G_PRIORITY_DEFAULT that was scheduled after unsubscription, also indicates that all resources of this subscription are released.

§subscription_id

a subscription id obtained from g_dbus_connection_signal_subscribe()

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impl DBusConnection

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pub fn for_address_sync( address: &str, flags: DBusConnectionFlags, observer: Option<&DBusAuthObserver>, cancellable: Option<&impl IsA<Cancellable>> ) -> Result<DBusConnection, Error>

Synchronously connects and sets up a D-Bus client connection for exchanging D-Bus messages with an endpoint specified by @address which must be in the D-Bus address format.

This constructor can only be used to initiate client-side connections - use g_dbus_connection_new_sync() if you need to act as the server. In particular, @flags cannot contain the DBusConnectionFlags::AUTHENTICATION_SERVER, DBusConnectionFlags::AUTHENTICATION_ALLOW_ANONYMOUS or DBusConnectionFlags::AUTHENTICATION_REQUIRE_SAME_USER flags.

This is a synchronous failable constructor. See g_dbus_connection_new_for_address() for the asynchronous version.

If @observer is not None it may be used to control the authentication process.

§address

a D-Bus address

§flags

flags describing how to make the connection

§observer

a #GDBusAuthObserver or None

§cancellable

a #GCancellable or None

§Returns

a #GDBusConnection or None if @error is set. Free with g_object_unref().

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pub fn new_sync( stream: &impl IsA<IOStream>, guid: Option<&str>, flags: DBusConnectionFlags, observer: Option<&DBusAuthObserver>, cancellable: Option<&impl IsA<Cancellable>> ) -> Result<DBusConnection, Error>

Synchronously sets up a D-Bus connection for exchanging D-Bus messages with the end represented by @stream.

If @stream is a #GSocketConnection, then the corresponding #GSocket will be put into non-blocking mode.

The D-Bus connection will interact with @stream from a worker thread. As a result, the caller should not interact with @stream after this method has been called, except by calling g_object_unref() on it.

If @observer is not None it may be used to control the authentication process.

This is a synchronous failable constructor. See g_dbus_connection_new() for the asynchronous version.

§stream

a #GIOStream

§guid

the GUID to use if authenticating as a server or None

§flags

flags describing how to make the connection

§observer

a #GDBusAuthObserver or None

§cancellable

a #GCancellable or None

§Returns

a #GDBusConnection or None if @error is set. Free with g_object_unref().

source

pub fn call<P: FnOnce(Result<Variant, Error>) + 'static>( &self, bus_name: Option<&str>, object_path: &str, interface_name: &str, method_name: &str, parameters: Option<&Variant>, reply_type: Option<&VariantTy>, flags: DBusCallFlags, timeout_msec: i32, cancellable: Option<&impl IsA<Cancellable>>, callback: P )

Asynchronously invokes the @method_name method on the @interface_name D-Bus interface on the remote object at @object_path owned by @bus_name.

If @self is closed then the operation will fail with IOErrorEnum::Closed. If @cancellable is canceled, the operation will fail with IOErrorEnum::Cancelled. If @parameters contains a value not compatible with the D-Bus protocol, the operation fails with IOErrorEnum::InvalidArgument.

If @reply_type is non-None then the reply will be checked for having this type and an error will be raised if it does not match. Said another way, if you give a @reply_type then any non-None return value will be of this type. Unless it’s G_VARIANT_TYPE_UNIT, the @reply_type will be a tuple containing one or more values.

If the @parameters #GVariant is floating, it is consumed. This allows convenient ‘inline’ use of g_variant_new(), e.g.:

⚠️ The following code is in C ⚠️

 g_dbus_connection_call (connection,
                         "org.freedesktop.StringThings",
                         "/org/freedesktop/StringThings",
                         "org.freedesktop.StringThings",
                         "TwoStrings",
                         g_variant_new ("(ss)",
                                        "Thing One",
                                        "Thing Two"),
                         NULL,
                         G_DBUS_CALL_FLAGS_NONE,
                         -1,
                         NULL,
                         (GAsyncReadyCallback) two_strings_done,
                         NULL);

This is an asynchronous method. When the operation is finished, @callback will be invoked in the [thread-default main context][g-main-context-push-thread-default] of the thread you are calling this method from. You can then call g_dbus_connection_call_finish() to get the result of the operation. See g_dbus_connection_call_sync() for the synchronous version of this function.

If @callback is None then the D-Bus method call message will be sent with the DBusMessageFlags::NO_REPLY_EXPECTED flag set.

§bus_name

a unique or well-known bus name or None if @self is not a message bus connection

§object_path

path of remote object

§interface_name

D-Bus interface to invoke method on

§method_name

the name of the method to invoke

§parameters

a #GVariant tuple with parameters for the method or None if not passing parameters

§reply_type

the expected type of the reply (which will be a tuple), or None

§flags

flags from the #GDBusCallFlags enumeration

§timeout_msec

the timeout in milliseconds, -1 to use the default timeout or G_MAXINT for no timeout

§cancellable

a #GCancellable or None

§callback

a #GAsyncReadyCallback to call when the request is satisfied or None if you don’t care about the result of the method invocation

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pub fn call_future( &self, bus_name: Option<&str>, object_path: &str, interface_name: &str, method_name: &str, parameters: Option<&Variant>, reply_type: Option<&VariantTy>, flags: DBusCallFlags, timeout_msec: i32 ) -> Pin<Box_<dyn Future<Output = Result<Variant, Error>> + 'static>>

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pub fn call_sync( &self, bus_name: Option<&str>, object_path: &str, interface_name: &str, method_name: &str, parameters: Option<&Variant>, reply_type: Option<&VariantTy>, flags: DBusCallFlags, timeout_msec: i32, cancellable: Option<&impl IsA<Cancellable>> ) -> Result<Variant, Error>

Synchronously invokes the @method_name method on the @interface_name D-Bus interface on the remote object at @object_path owned by @bus_name.

If @self is closed then the operation will fail with IOErrorEnum::Closed. If @cancellable is canceled, the operation will fail with IOErrorEnum::Cancelled. If @parameters contains a value not compatible with the D-Bus protocol, the operation fails with IOErrorEnum::InvalidArgument.

If @reply_type is non-None then the reply will be checked for having this type and an error will be raised if it does not match. Said another way, if you give a @reply_type then any non-None return value will be of this type.

If the @parameters #GVariant is floating, it is consumed. This allows convenient ‘inline’ use of g_variant_new(), e.g.:

⚠️ The following code is in C ⚠️

 g_dbus_connection_call_sync (connection,
                              "org.freedesktop.StringThings",
                              "/org/freedesktop/StringThings",
                              "org.freedesktop.StringThings",
                              "TwoStrings",
                              g_variant_new ("(ss)",
                                             "Thing One",
                                             "Thing Two"),
                              NULL,
                              G_DBUS_CALL_FLAGS_NONE,
                              -1,
                              NULL,
                              &error);

The calling thread is blocked until a reply is received. See g_dbus_connection_call() for the asynchronous version of this method.

§bus_name

a unique or well-known bus name or None if @self is not a message bus connection

§object_path

path of remote object

§interface_name

D-Bus interface to invoke method on

§method_name

the name of the method to invoke

§parameters

a #GVariant tuple with parameters for the method or None if not passing parameters

§reply_type

the expected type of the reply, or None

§flags

flags from the #GDBusCallFlags enumeration

§timeout_msec

the timeout in milliseconds, -1 to use the default timeout or G_MAXINT for no timeout

§cancellable

a #GCancellable or None

§Returns

None if @error is set. Otherwise a non-floating #GVariant tuple with return values. Free with g_variant_unref().

source

pub fn call_with_unix_fd_list<P: FnOnce(Result<(Variant, UnixFDList), Error>) + 'static>( &self, bus_name: Option<&str>, object_path: &str, interface_name: &str, method_name: &str, parameters: Option<&Variant>, reply_type: Option<&VariantTy>, flags: DBusCallFlags, timeout_msec: i32, fd_list: Option<&impl IsA<UnixFDList>>, cancellable: Option<&impl IsA<Cancellable>>, callback: P )

Available on Unix only.

Like g_dbus_connection_call() but also takes a #GUnixFDList object.

The file descriptors normally correspond to G_VARIANT_TYPE_HANDLE values in the body of the message. For example, if a message contains two file descriptors, @fd_list would have length 2, and g_variant_new_handle (0) and g_variant_new_handle (1) would appear somewhere in the body of the message (not necessarily in that order!) to represent the file descriptors at indexes 0 and 1 respectively.

When designing D-Bus APIs that are intended to be interoperable, please note that non-GDBus implementations of D-Bus can usually only access file descriptors if they are referenced in this way by a value of type G_VARIANT_TYPE_HANDLE in the body of the message.

This method is only available on UNIX.

§bus_name

a unique or well-known bus name or None if @self is not a message bus connection

§object_path

path of remote object

§interface_name

D-Bus interface to invoke method on

§method_name

the name of the method to invoke

§parameters

a #GVariant tuple with parameters for the method or None if not passing parameters

§reply_type

the expected type of the reply, or None

§flags

flags from the #GDBusCallFlags enumeration

§timeout_msec

the timeout in milliseconds, -1 to use the default timeout or G_MAXINT for no timeout

§fd_list

a #GUnixFDList or None

§cancellable

a #GCancellable or None

§callback

a #GAsyncReadyCallback to call when the request is satisfied or None if you don’t * care about the result of the method invocation

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pub fn call_with_unix_fd_list_future( &self, bus_name: Option<&str>, object_path: &str, interface_name: &str, method_name: &str, parameters: Option<&Variant>, reply_type: Option<&VariantTy>, flags: DBusCallFlags, timeout_msec: i32, fd_list: Option<&(impl IsA<UnixFDList> + Clone + 'static)> ) -> Pin<Box_<dyn Future<Output = Result<(Variant, UnixFDList), Error>> + 'static>>

Available on Unix only.
source

pub fn call_with_unix_fd_list_sync( &self, bus_name: Option<&str>, object_path: &str, interface_name: &str, method_name: &str, parameters: Option<&Variant>, reply_type: Option<&VariantTy>, flags: DBusCallFlags, timeout_msec: i32, fd_list: Option<&impl IsA<UnixFDList>>, cancellable: Option<&impl IsA<Cancellable>> ) -> Result<(Variant, UnixFDList), Error>

Available on Unix only.

Like g_dbus_connection_call_sync() but also takes and returns #GUnixFDList objects. See g_dbus_connection_call_with_unix_fd_list() and g_dbus_connection_call_with_unix_fd_list_finish() for more details.

This method is only available on UNIX.

§bus_name

a unique or well-known bus name or None if @self is not a message bus connection

§object_path

path of remote object

§interface_name

D-Bus interface to invoke method on

§method_name

the name of the method to invoke

§parameters

a #GVariant tuple with parameters for the method or None if not passing parameters

§reply_type

the expected type of the reply, or None

§flags

flags from the #GDBusCallFlags enumeration

§timeout_msec

the timeout in milliseconds, -1 to use the default timeout or G_MAXINT for no timeout

§fd_list

a #GUnixFDList or None

§cancellable

a #GCancellable or None

§Returns

None if @error is set. Otherwise a non-floating #GVariant tuple with return values. Free with g_variant_unref().

§out_fd_list

return location for a #GUnixFDList or None

source

pub fn close<P: FnOnce(Result<(), Error>) + 'static>( &self, cancellable: Option<&impl IsA<Cancellable>>, callback: P )

Closes @self. Note that this never causes the process to exit (this might only happen if the other end of a shared message bus connection disconnects, see #GDBusConnection:exit-on-close).

Once the connection is closed, operations such as sending a message will return with the error IOErrorEnum::Closed. Closing a connection will not automatically flush the connection so queued messages may be lost. Use g_dbus_connection_flush() if you need such guarantees.

If @self is already closed, this method fails with IOErrorEnum::Closed.

When @self has been closed, the #GDBusConnection::closed signal is emitted in the [thread-default main context][g-main-context-push-thread-default] of the thread that @self was constructed in.

This is an asynchronous method. When the operation is finished, @callback will be invoked in the [thread-default main context][g-main-context-push-thread-default] of the thread you are calling this method from. You can then call g_dbus_connection_close_finish() to get the result of the operation. See g_dbus_connection_close_sync() for the synchronous version.

§cancellable

a #GCancellable or None

§callback

a #GAsyncReadyCallback to call when the request is satisfied or None if you don’t care about the result

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pub fn close_future( &self ) -> Pin<Box_<dyn Future<Output = Result<(), Error>> + 'static>>

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pub fn close_sync( &self, cancellable: Option<&impl IsA<Cancellable>> ) -> Result<(), Error>

Synchronously closes @self. The calling thread is blocked until this is done. See g_dbus_connection_close() for the asynchronous version of this method and more details about what it does.

§cancellable

a #GCancellable or None

§Returns

true if the operation succeeded, false if @error is set

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pub fn emit_signal( &self, destination_bus_name: Option<&str>, object_path: &str, interface_name: &str, signal_name: &str, parameters: Option<&Variant> ) -> Result<(), Error>

Emits a signal.

If the parameters GVariant is floating, it is consumed.

This can only fail if @parameters is not compatible with the D-Bus protocol (IOErrorEnum::InvalidArgument), or if @self has been closed (IOErrorEnum::Closed).

§destination_bus_name

the unique bus name for the destination for the signal or None to emit to all listeners

§object_path

path of remote object

§interface_name

D-Bus interface to emit a signal on

§signal_name

the name of the signal to emit

§parameters

a #GVariant tuple with parameters for the signal or None if not passing parameters

§Returns

true unless @error is set

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pub fn flush<P: FnOnce(Result<(), Error>) + 'static>( &self, cancellable: Option<&impl IsA<Cancellable>>, callback: P )

Asynchronously flushes @self, that is, writes all queued outgoing message to the transport and then flushes the transport (using g_output_stream_flush_async()). This is useful in programs that wants to emit a D-Bus signal and then exit immediately. Without flushing the connection, there is no guaranteed that the message has been sent to the networking buffers in the OS kernel.

This is an asynchronous method. When the operation is finished, @callback will be invoked in the [thread-default main context][g-main-context-push-thread-default] of the thread you are calling this method from. You can then call g_dbus_connection_flush_finish() to get the result of the operation. See g_dbus_connection_flush_sync() for the synchronous version.

§cancellable

a #GCancellable or None

§callback

a #GAsyncReadyCallback to call when the request is satisfied or None if you don’t care about the result

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pub fn flush_future( &self ) -> Pin<Box_<dyn Future<Output = Result<(), Error>> + 'static>>

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pub fn flush_sync( &self, cancellable: Option<&impl IsA<Cancellable>> ) -> Result<(), Error>

Synchronously flushes @self. The calling thread is blocked until this is done. See g_dbus_connection_flush() for the asynchronous version of this method and more details about what it does.

§cancellable

a #GCancellable or None

§Returns

true if the operation succeeded, false if @error is set

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pub fn capabilities(&self) -> DBusCapabilityFlags

Gets the capabilities negotiated with the remote peer

§Returns

zero or more flags from the #GDBusCapabilityFlags enumeration

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pub fn exits_on_close(&self) -> bool

Gets whether the process is terminated when @self is closed by the remote peer. See #GDBusConnection:exit-on-close for more details.

§Returns

whether the process is terminated when @self is closed by the remote peer

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pub fn flags(&self) -> DBusConnectionFlags

Available on crate feature v2_60 only.

Gets the flags used to construct this connection

§Returns

zero or more flags from the #GDBusConnectionFlags enumeration

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pub fn guid(&self) -> GString

The GUID of the peer performing the role of server when authenticating. See #GDBusConnection:guid for more details.

§Returns

The GUID. Do not free this string, it is owned by @self.

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pub fn last_serial(&self) -> u32

Retrieves the last serial number assigned to a #GDBusMessage on the current thread. This includes messages sent via both low-level API such as g_dbus_connection_send_message() as well as high-level API such as g_dbus_connection_emit_signal(), g_dbus_connection_call() or g_dbus_proxy_call().

§Returns

the last used serial or zero when no message has been sent within the current thread

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pub fn peer_credentials(&self) -> Option<Credentials>

Gets the credentials of the authenticated peer. This will always return None unless @self acted as a server (e.g. DBusConnectionFlags::AUTHENTICATION_SERVER was passed) when set up and the client passed credentials as part of the authentication process.

In a message bus setup, the message bus is always the server and each application is a client. So this method will always return None for message bus clients.

§Returns

a #GCredentials or None if not available. Do not free this object, it is owned by @self.

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pub fn stream(&self) -> IOStream

Gets the underlying stream used for IO.

While the #GDBusConnection is active, it will interact with this stream from a worker thread, so it is not safe to interact with the stream directly.

§Returns

the stream used for IO

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pub fn unique_name(&self) -> Option<GString>

Gets the unique name of @self as assigned by the message bus. This can also be used to figure out if @self is a message bus connection.

§Returns

the unique name or None if @self is not a message bus connection. Do not free this string, it is owned by @self.

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pub fn is_closed(&self) -> bool

Gets whether @self is closed.

§Returns

true if the connection is closed, false otherwise

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pub fn send_message( &self, message: &DBusMessage, flags: DBusSendMessageFlags ) -> Result<u32, Error>

Asynchronously sends @message to the peer represented by @self.

Unless @flags contain the DBusSendMessageFlags::PRESERVE_SERIAL flag, the serial number will be assigned by @self and set on @message via g_dbus_message_set_serial(). If @out_serial is not None, then the serial number used will be written to this location prior to submitting the message to the underlying transport. While it has a volatile qualifier, this is a historical artifact and the argument passed to it should not be volatile.

If @self is closed then the operation will fail with IOErrorEnum::Closed. If @message is not well-formed, the operation fails with IOErrorEnum::InvalidArgument.

See this [server][gdbus-server] and [client][gdbus-unix-fd-client] for an example of how to use this low-level API to send and receive UNIX file descriptors.

Note that @message must be unlocked, unless @flags contain the DBusSendMessageFlags::PRESERVE_SERIAL flag.

§message

a #GDBusMessage

§flags

flags affecting how the message is sent

§Returns

true if the message was well-formed and queued for transmission, false if @error is set

§out_serial

return location for serial number assigned to @message when sending it or None

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pub fn send_message_with_reply<P: FnOnce(Result<DBusMessage, Error>) + 'static>( &self, message: &DBusMessage, flags: DBusSendMessageFlags, timeout_msec: i32, cancellable: Option<&impl IsA<Cancellable>>, callback: P ) -> u32

Asynchronously sends @message to the peer represented by @self.

Unless @flags contain the DBusSendMessageFlags::PRESERVE_SERIAL flag, the serial number will be assigned by @self and set on @message via g_dbus_message_set_serial(). If @out_serial is not None, then the serial number used will be written to this location prior to submitting the message to the underlying transport. While it has a volatile qualifier, this is a historical artifact and the argument passed to it should not be volatile.

If @self is closed then the operation will fail with IOErrorEnum::Closed. If @cancellable is canceled, the operation will fail with IOErrorEnum::Cancelled. If @message is not well-formed, the operation fails with IOErrorEnum::InvalidArgument.

This is an asynchronous method. When the operation is finished, @callback will be invoked in the [thread-default main context][g-main-context-push-thread-default] of the thread you are calling this method from. You can then call g_dbus_connection_send_message_with_reply_finish() to get the result of the operation. See g_dbus_connection_send_message_with_reply_sync() for the synchronous version.

Note that @message must be unlocked, unless @flags contain the DBusSendMessageFlags::PRESERVE_SERIAL flag.

See this [server][gdbus-server] and [client][gdbus-unix-fd-client] for an example of how to use this low-level API to send and receive UNIX file descriptors.

§message

a #GDBusMessage

§flags

flags affecting how the message is sent

§timeout_msec

the timeout in milliseconds, -1 to use the default timeout or G_MAXINT for no timeout

§cancellable

a #GCancellable or None

§callback

a #GAsyncReadyCallback to call when the request is satisfied or None if you don’t care about the result

§Returns
§out_serial

return location for serial number assigned to @message when sending it or None

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pub fn send_message_with_reply_future( &self, message: &DBusMessage, flags: DBusSendMessageFlags, timeout_msec: i32 ) -> Pin<Box_<dyn Future<Output = Result<DBusMessage, Error>> + 'static>>

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pub fn send_message_with_reply_sync( &self, message: &DBusMessage, flags: DBusSendMessageFlags, timeout_msec: i32, cancellable: Option<&impl IsA<Cancellable>> ) -> Result<(DBusMessage, u32), Error>

Synchronously sends @message to the peer represented by @self and blocks the calling thread until a reply is received or the timeout is reached. See g_dbus_connection_send_message_with_reply() for the asynchronous version of this method.

Unless @flags contain the DBusSendMessageFlags::PRESERVE_SERIAL flag, the serial number will be assigned by @self and set on @message via g_dbus_message_set_serial(). If @out_serial is not None, then the serial number used will be written to this location prior to submitting the message to the underlying transport. While it has a volatile qualifier, this is a historical artifact and the argument passed to it should not be volatile.

If @self is closed then the operation will fail with IOErrorEnum::Closed. If @cancellable is canceled, the operation will fail with IOErrorEnum::Cancelled. If @message is not well-formed, the operation fails with IOErrorEnum::InvalidArgument.

Note that @error is only set if a local in-process error occurred. That is to say that the returned #GDBusMessage object may be of type DBusMessageType::Error. Use g_dbus_message_to_gerror() to transcode this to a #GError.

See this [server][gdbus-server] and [client][gdbus-unix-fd-client] for an example of how to use this low-level API to send and receive UNIX file descriptors.

Note that @message must be unlocked, unless @flags contain the DBusSendMessageFlags::PRESERVE_SERIAL flag.

§message

a #GDBusMessage

§flags

flags affecting how the message is sent.

§timeout_msec

the timeout in milliseconds, -1 to use the default timeout or G_MAXINT for no timeout

§cancellable

a #GCancellable or None

§Returns

a locked #GDBusMessage that is the reply to @message or None if @error is set

§out_serial

return location for serial number assigned to @message when sending it or None

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pub fn set_exit_on_close(&self, exit_on_close: bool)

Sets whether the process should be terminated when @self is closed by the remote peer. See #GDBusConnection:exit-on-close for more details.

Note that this function should be used with care. Most modern UNIX desktops tie the notion of a user session with the session bus, and expect all of a user’s applications to quit when their bus connection goes away. If you are setting @exit_on_close to false for the shared session bus connection, you should make sure that your application exits when the user session ends.

§exit_on_close

whether the process should be terminated when @self is closed by the remote peer

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pub fn start_message_processing(&self)

If @self was created with DBusConnectionFlags::DELAY_MESSAGE_PROCESSING, this method starts processing messages. Does nothing on if @self wasn’t created with this flag or if the method has already been called.

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pub fn get_property_flags(&self) -> DBusConnectionFlags

Flags from the #GDBusConnectionFlags enumeration.

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pub fn new<P: FnOnce(Result<DBusConnection, Error>) + 'static>( stream: &impl IsA<IOStream>, guid: Option<&str>, flags: DBusConnectionFlags, observer: Option<&DBusAuthObserver>, cancellable: Option<&impl IsA<Cancellable>>, callback: P )

Asynchronously sets up a D-Bus connection for exchanging D-Bus messages with the end represented by @stream.

If @stream is a #GSocketConnection, then the corresponding #GSocket will be put into non-blocking mode.

The D-Bus connection will interact with @stream from a worker thread. As a result, the caller should not interact with @stream after this method has been called, except by calling g_object_unref() on it.

If @observer is not None it may be used to control the authentication process.

When the operation is finished, @callback will be invoked. You can then call g_dbus_connection_new_finish() to get the result of the operation.

This is an asynchronous failable constructor. See g_dbus_connection_new_sync() for the synchronous version.

§stream

a #GIOStream

§guid

the GUID to use if authenticating as a server or None

§flags

flags describing how to make the connection

§observer

a #GDBusAuthObserver or None

§cancellable

a #GCancellable or None

§callback

a #GAsyncReadyCallback to call when the request is satisfied

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pub fn new_future( stream: &(impl IsA<IOStream> + Clone + 'static), guid: Option<&str>, flags: DBusConnectionFlags, observer: Option<&DBusAuthObserver> ) -> Pin<Box_<dyn Future<Output = Result<DBusConnection, Error>> + 'static>>

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pub fn for_address<P: FnOnce(Result<DBusConnection, Error>) + 'static>( address: &str, flags: DBusConnectionFlags, observer: Option<&DBusAuthObserver>, cancellable: Option<&impl IsA<Cancellable>>, callback: P )

Asynchronously connects and sets up a D-Bus client connection for exchanging D-Bus messages with an endpoint specified by @address which must be in the D-Bus address format.

This constructor can only be used to initiate client-side connections - use g_dbus_connection_new() if you need to act as the server. In particular, @flags cannot contain the DBusConnectionFlags::AUTHENTICATION_SERVER, DBusConnectionFlags::AUTHENTICATION_ALLOW_ANONYMOUS or DBusConnectionFlags::AUTHENTICATION_REQUIRE_SAME_USER flags.

When the operation is finished, @callback will be invoked. You can then call g_dbus_connection_new_for_address_finish() to get the result of the operation.

If @observer is not None it may be used to control the authentication process.

This is an asynchronous failable constructor. See g_dbus_connection_new_for_address_sync() for the synchronous version.

§address

a D-Bus address

§flags

flags describing how to make the connection

§observer

a #GDBusAuthObserver or None

§cancellable

a #GCancellable or None

§callback

a #GAsyncReadyCallback to call when the request is satisfied

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pub fn for_address_future( address: &str, flags: DBusConnectionFlags, observer: Option<&DBusAuthObserver> ) -> Pin<Box_<dyn Future<Output = Result<DBusConnection, Error>> + 'static>>

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pub fn connect_closed<F: Fn(&Self, bool, Option<&Error>) + Send + Sync + 'static>( &self, f: F ) -> SignalHandlerId

Emitted when the connection is closed.

The cause of this event can be

  • If g_dbus_connection_close() is called. In this case @remote_peer_vanished is set to false and @error is None.

  • If the remote peer closes the connection. In this case @remote_peer_vanished is set to true and @error is set.

  • If the remote peer sends invalid or malformed data. In this case @remote_peer_vanished is set to false and @error is set.

Upon receiving this signal, you should give up your reference to @connection. You are guaranteed that this signal is emitted only once.

§remote_peer_vanished

true if @connection is closed because the remote peer closed its end of the connection

§error

a #GError with more details about the event or None

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pub fn connect_capabilities_notify<F: Fn(&Self) + Send + Sync + 'static>( &self, f: F ) -> SignalHandlerId

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pub fn connect_closed_notify<F: Fn(&Self) + Send + Sync + 'static>( &self, f: F ) -> SignalHandlerId

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pub fn connect_exit_on_close_notify<F: Fn(&Self) + Send + Sync + 'static>( &self, f: F ) -> SignalHandlerId

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pub fn connect_unique_name_notify<F: Fn(&Self) + Send + Sync + 'static>( &self, f: F ) -> SignalHandlerId

Trait Implementations§

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impl Clone for DBusConnection

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fn clone(&self) -> Self

Returns a copy of the value. Read more
1.0.0 · source§

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for DBusConnection

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
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impl HasParamSpec for DBusConnection

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type ParamSpec = ParamSpecObject

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type SetValue = DBusConnection

Preferred value to be used as setter for the associated ParamSpec.
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type BuilderFn = fn(_: &str) -> ParamSpecObjectBuilder<'_, DBusConnection>

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fn param_spec_builder() -> Self::BuilderFn

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impl Hash for DBusConnection

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fn hash<H>(&self, state: &mut H)
where H: Hasher,

Feeds this value into the given Hasher. Read more
1.3.0 · source§

fn hash_slice<H>(data: &[Self], state: &mut H)
where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher. Read more
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impl Ord for DBusConnection

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fn cmp(&self, other: &Self) -> Ordering

This method returns an Ordering between self and other. Read more
1.21.0 · source§

fn max(self, other: Self) -> Self
where Self: Sized,

Compares and returns the maximum of two values. Read more
1.21.0 · source§

fn min(self, other: Self) -> Self
where Self: Sized,

Compares and returns the minimum of two values. Read more
1.50.0 · source§

fn clamp(self, min: Self, max: Self) -> Self
where Self: Sized + PartialOrd,

Restrict a value to a certain interval. Read more
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impl ParentClassIs for DBusConnection

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impl<OT: ObjectType> PartialEq<OT> for DBusConnection

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fn eq(&self, other: &OT) -> bool

This method tests for self and other values to be equal, and is used by ==.
1.0.0 · source§

fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl<OT: ObjectType> PartialOrd<OT> for DBusConnection

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fn partial_cmp(&self, other: &OT) -> Option<Ordering>

This method returns an ordering between self and other values if one exists. Read more
1.0.0 · source§

fn lt(&self, other: &Rhs) -> bool

This method tests less than (for self and other) and is used by the < operator. Read more
1.0.0 · source§

fn le(&self, other: &Rhs) -> bool

This method tests less than or equal to (for self and other) and is used by the <= operator. Read more
1.0.0 · source§

fn gt(&self, other: &Rhs) -> bool

This method tests greater than (for self and other) and is used by the > operator. Read more
1.0.0 · source§

fn ge(&self, other: &Rhs) -> bool

This method tests greater than or equal to (for self and other) and is used by the >= operator. Read more
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impl StaticType for DBusConnection

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fn static_type() -> Type

Returns the type identifier of Self.
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impl Eq for DBusConnection

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impl IsA<AsyncInitable> for DBusConnection

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impl IsA<Initable> for DBusConnection

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impl Send for DBusConnection

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impl Sync for DBusConnection

Auto Trait Implementations§

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<O> AsyncInitableExt for O
where O: IsA<AsyncInitable>,

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unsafe fn init_async<P: FnOnce(Result<(), Error>) + 'static>( &self, io_priority: Priority, cancellable: Option<&impl IsA<Cancellable>>, callback: P )

Starts asynchronous initialization of the object implementing the interface. This must be done before any real use of the object after initial construction. If the object also implements #GInitable you can optionally call g_initable_init() instead. Read more
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unsafe fn init_future( &self, io_priority: Priority ) -> Pin<Box_<dyn Future<Output = Result<(), Error>> + 'static>>

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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> Cast for T
where T: ObjectType,

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fn upcast<T>(self) -> T
where T: ObjectType, Self: IsA<T>,

Upcasts an object to a superclass or interface T. Read more
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fn upcast_ref<T>(&self) -> &T
where T: ObjectType, Self: IsA<T>,

Upcasts an object to a reference of its superclass or interface T. Read more
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fn downcast<T>(self) -> Result<T, Self>
where T: ObjectType, Self: MayDowncastTo<T>,

Tries to downcast to a subclass or interface implementor T. Read more
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fn downcast_ref<T>(&self) -> Option<&T>
where T: ObjectType, Self: MayDowncastTo<T>,

Tries to downcast to a reference of its subclass or interface implementor T. Read more
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fn dynamic_cast<T>(self) -> Result<T, Self>
where T: ObjectType,

Tries to cast to an object of type T. This handles upcasting, downcasting and casting between interface and interface implementors. All checks are performed at runtime, while upcast will do many checks at compile-time already. downcast will perform the same checks at runtime as dynamic_cast, but will also ensure some amount of compile-time safety. Read more
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fn dynamic_cast_ref<T>(&self) -> Option<&T>
where T: ObjectType,

Tries to cast to reference to an object of type T. This handles upcasting, downcasting and casting between interface and interface implementors. All checks are performed at runtime, while downcast and upcast will do many checks at compile-time already. Read more
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unsafe fn unsafe_cast<T>(self) -> T
where T: ObjectType,

Casts to T unconditionally. Read more
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unsafe fn unsafe_cast_ref<T>(&self) -> &T
where T: ObjectType,

Casts to &T unconditionally. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T> FromGlibContainerAsVec<<T as GlibPtrDefault>::GlibType, *const GList> for T

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impl<T> FromGlibContainerAsVec<<T as GlibPtrDefault>::GlibType, *const GPtrArray> for T

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impl<T> FromGlibContainerAsVec<<T as GlibPtrDefault>::GlibType, *const GSList> for T

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impl<T> FromGlibContainerAsVec<<T as GlibPtrDefault>::GlibType, *mut GList> for T

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impl<T> FromGlibContainerAsVec<<T as GlibPtrDefault>::GlibType, *mut GPtrArray> for T

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impl<T> FromGlibContainerAsVec<<T as GlibPtrDefault>::GlibType, *mut GSList> for T

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impl<T> FromGlibPtrArrayContainerAsVec<<T as GlibPtrDefault>::GlibType, *const GList> for T

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impl<T> FromGlibPtrArrayContainerAsVec<<T as GlibPtrDefault>::GlibType, *const GPtrArray> for T

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impl<T> FromGlibPtrArrayContainerAsVec<<T as GlibPtrDefault>::GlibType, *const GSList> for T

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impl<T> FromGlibPtrArrayContainerAsVec<<T as GlibPtrDefault>::GlibType, *mut GList> for T

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impl<T> FromGlibPtrArrayContainerAsVec<<T as GlibPtrDefault>::GlibType, *mut GPtrArray> for T

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impl<T> FromGlibPtrArrayContainerAsVec<<T as GlibPtrDefault>::GlibType, *mut GSList> for T

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impl<O> InitableExt for O
where O: IsA<Initable>,

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unsafe fn init( &self, cancellable: Option<&impl IsA<Cancellable>> ) -> Result<(), Error>

Initializes the object implementing the interface. Read more
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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> IntoClosureReturnValue for T
where T: Into<Value>,

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impl<U> IsSubclassableExt for U

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impl<T> ObjectExt for T
where T: ObjectType,

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fn is<U>(&self) -> bool
where U: StaticType,

Returns true if the object is an instance of (can be cast to) T.
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fn type_(&self) -> Type

Returns the type of the object.
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Returns the ObjectClass of the object. Read more
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where T: IsClass,

Returns the class of the object.
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fn class_of<U>(&self) -> Option<&Class<U>>
where U: IsClass,

Returns the class of the object in the given type T. Read more
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where U: IsInterface,

Returns the interface T of the object. Read more
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fn set_property(&self, property_name: &str, value: impl Into<Value>)

Sets the property property_name of the object to value value. Read more
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fn set_property_from_value(&self, property_name: &str, value: &Value)

Sets the property property_name of the object to value value. Read more
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fn set_properties(&self, property_values: &[(&str, &dyn ToValue)])

Sets multiple properties of the object at once. Read more
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fn set_properties_from_value(&self, property_values: &[(&str, Value)])

Sets multiple properties of the object at once. Read more
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fn property<V>(&self, property_name: &str) -> V
where V: for<'b> FromValue<'b> + 'static,

Gets the property property_name of the object and cast it to the type V. Read more
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fn property_value(&self, property_name: &str) -> Value

Gets the property property_name of the object. Read more
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fn has_property(&self, property_name: &str, type_: Option<Type>) -> bool

Check if the object has a property property_name of the given type_. Read more
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fn property_type(&self, property_name: &str) -> Option<Type>

Get the type of the property property_name of this object. Read more
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fn find_property(&self, property_name: &str) -> Option<ParamSpec>

Get the ParamSpec of the property property_name of this object.
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fn list_properties(&self) -> PtrSlice<ParamSpec>

Return all ParamSpec of the properties of this object.
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fn freeze_notify(&self) -> PropertyNotificationFreezeGuard

Freeze all property notifications until the return guard object is dropped. Read more
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unsafe fn set_qdata<QD>(&self, key: Quark, value: QD)
where QD: 'static,

Set arbitrary data on this object with the given key. Read more
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unsafe fn qdata<QD>(&self, key: Quark) -> Option<NonNull<QD>>
where QD: 'static,

Return previously set arbitrary data of this object with the given key. Read more
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unsafe fn steal_qdata<QD>(&self, key: Quark) -> Option<QD>
where QD: 'static,

Retrieve previously set arbitrary data of this object with the given key. Read more
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unsafe fn set_data<QD>(&self, key: &str, value: QD)
where QD: 'static,

Set arbitrary data on this object with the given key. Read more
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unsafe fn data<QD>(&self, key: &str) -> Option<NonNull<QD>>
where QD: 'static,

Return previously set arbitrary data of this object with the given key. Read more
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unsafe fn steal_data<QD>(&self, key: &str) -> Option<QD>
where QD: 'static,

Retrieve previously set arbitrary data of this object with the given key. Read more
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fn block_signal(&self, handler_id: &SignalHandlerId)

Block a given signal handler. Read more
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fn unblock_signal(&self, handler_id: &SignalHandlerId)

Unblock a given signal handler.
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fn stop_signal_emission(&self, signal_id: SignalId, detail: Option<Quark>)

Stop emission of the currently emitted signal.
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fn stop_signal_emission_by_name(&self, signal_name: &str)

Stop emission of the currently emitted signal by the (possibly detailed) signal name.
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fn connect<F>( &self, signal_name: &str, after: bool, callback: F ) -> SignalHandlerId
where F: Fn(&[Value]) -> Option<Value> + Send + Sync + 'static,

Connect to the signal signal_name on this object. Read more
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fn connect_id<F>( &self, signal_id: SignalId, details: Option<Quark>, after: bool, callback: F ) -> SignalHandlerId
where F: Fn(&[Value]) -> Option<Value> + Send + Sync + 'static,

Connect to the signal signal_id on this object. Read more
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fn connect_local<F>( &self, signal_name: &str, after: bool, callback: F ) -> SignalHandlerId
where F: Fn(&[Value]) -> Option<Value> + 'static,

Connect to the signal signal_name on this object. Read more
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fn connect_local_id<F>( &self, signal_id: SignalId, details: Option<Quark>, after: bool, callback: F ) -> SignalHandlerId
where F: Fn(&[Value]) -> Option<Value> + 'static,

Connect to the signal signal_id on this object. Read more
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unsafe fn connect_unsafe<F>( &self, signal_name: &str, after: bool, callback: F ) -> SignalHandlerId
where F: Fn(&[Value]) -> Option<Value>,

Connect to the signal signal_name on this object. Read more
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unsafe fn connect_unsafe_id<F>( &self, signal_id: SignalId, details: Option<Quark>, after: bool, callback: F ) -> SignalHandlerId
where F: Fn(&[Value]) -> Option<Value>,

Connect to the signal signal_id on this object. Read more
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fn connect_closure( &self, signal_name: &str, after: bool, closure: RustClosure ) -> SignalHandlerId

Connect a closure to the signal signal_name on this object. Read more
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fn connect_closure_id( &self, signal_id: SignalId, details: Option<Quark>, after: bool, closure: RustClosure ) -> SignalHandlerId

Connect a closure to the signal signal_id on this object. Read more
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fn watch_closure(&self, closure: &impl AsRef<Closure>)

Limits the lifetime of closure to the lifetime of the object. When the object’s reference count drops to zero, the closure will be invalidated. An invalidated closure will ignore any calls to invoke_with_values, or invoke when using Rust closures.
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fn emit<R>(&self, signal_id: SignalId, args: &[&dyn ToValue]) -> R

Emit signal by signal id. Read more
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fn emit_with_values(&self, signal_id: SignalId, args: &[Value]) -> Option<Value>

Same as Self::emit but takes Value for the arguments.
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fn emit_by_name<R>(&self, signal_name: &str, args: &[&dyn ToValue]) -> R

Emit signal by its name. Read more
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fn emit_by_name_with_values( &self, signal_name: &str, args: &[Value] ) -> Option<Value>

Emit signal by its name. Read more
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fn emit_by_name_with_details<R>( &self, signal_name: &str, details: Quark, args: &[&dyn ToValue] ) -> R

Emit signal by its name with details. Read more
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fn emit_by_name_with_details_and_values( &self, signal_name: &str, details: Quark, args: &[Value] ) -> Option<Value>

Emit signal by its name with details. Read more
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fn emit_with_details<R>( &self, signal_id: SignalId, details: Quark, args: &[&dyn ToValue] ) -> R

Emit signal by signal id with details. Read more
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fn emit_with_details_and_values( &self, signal_id: SignalId, details: Quark, args: &[Value] ) -> Option<Value>

Emit signal by signal id with details. Read more
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fn disconnect(&self, handler_id: SignalHandlerId)

Disconnect a previously connected signal handler.
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fn connect_notify<F>(&self, name: Option<&str>, f: F) -> SignalHandlerId
where F: Fn(&T, &ParamSpec) + Send + Sync + 'static,

Connect to the notify signal of the object. Read more
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fn connect_notify_local<F>(&self, name: Option<&str>, f: F) -> SignalHandlerId
where F: Fn(&T, &ParamSpec) + 'static,

Connect to the notify signal of the object. Read more
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unsafe fn connect_notify_unsafe<F>( &self, name: Option<&str>, f: F ) -> SignalHandlerId
where F: Fn(&T, &ParamSpec),

Connect to the notify signal of the object. Read more
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fn notify(&self, property_name: &str)

Notify that the given property has changed its value. Read more
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fn notify_by_pspec(&self, pspec: &ParamSpec)

Notify that the given property has changed its value. Read more
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fn downgrade(&self) -> WeakRef<T>

Downgrade this object to a weak reference.
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fn add_weak_ref_notify<F>(&self, f: F) -> WeakRefNotify<T>
where F: FnOnce() + Send + 'static,

Add a callback to be notified when the Object is disposed.
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fn add_weak_ref_notify_local<F>(&self, f: F) -> WeakRefNotify<T>
where F: FnOnce() + 'static,

Add a callback to be notified when the Object is disposed. Read more
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fn bind_property<'f, 't, O, 'a>( &'a self, source_property: &'a str, target: &'a O, target_property: &'a str ) -> BindingBuilder<'a, 'f, 't>
where O: ObjectType,

Bind property source_property on this object to the target_property on the target object. Read more
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fn ref_count(&self) -> u32

Returns the strong reference count of this object.
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unsafe fn run_dispose(&self)

Runs the dispose mechanism of the object. Read more
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impl<T> Property for T
where T: HasParamSpec,

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type Value = T

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impl<T> PropertyGet for T
where T: HasParamSpec,

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type Value = T

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fn get<R, F>(&self, f: F) -> R
where F: Fn(&<T as PropertyGet>::Value) -> R,

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impl<T> StaticTypeExt for T
where T: StaticType,

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fn ensure_type()

Ensures that the type has been registered with the type system.
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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T> ToSendValue for T
where T: Send + ToValue + ?Sized,

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fn to_send_value(&self) -> SendValue

Returns a SendValue clone of self.
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impl<T> TransparentType for T

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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T> TryFromClosureReturnValue for T
where T: for<'a> FromValue<'a> + StaticType + 'static,

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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<'a, T, C, E> FromValueOptional<'a> for T
where T: FromValue<'a, Checker = C>, C: ValueTypeChecker<Error = ValueTypeMismatchOrNoneError<E>>, E: Error + Send + 'static,

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impl<Super, Sub> MayDowncastTo<Sub> for Super
where Super: IsA<Super>, Sub: IsA<Super>,