Struct gio::ActionGroup

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pub struct ActionGroup { /* private fields */ }
Expand description

GActionGroup represents a group of actions.

Actions can be used to expose functionality in a structured way, either from one part of a program to another, or to the outside world. Action groups are often used together with a GMenuModel that provides additional representation data for displaying the actions to the user, e.g. in a menu.

The main way to interact with the actions in a GActionGroup is to activate them with ActionGroupExt::activate_action(). Activating an action may require a GVariant parameter. The required type of the parameter can be inquired with ActionGroupExt::action_parameter_type(). Actions may be disabled, see ActionGroupExt::is_action_enabled(). Activating a disabled action has no effect.

Actions may optionally have a state in the form of a #GVariant. The current state of an action can be inquired with ActionGroupExt::action_state(). Activating a stateful action may change its state, but it is also possible to set the state by calling ActionGroupExt::change_action_state().

As typical example, consider a text editing application which has an option to change the current font to ‘bold’. A good way to represent this would be a stateful action, with a boolean state. Activating the action would toggle the state.

Each action in the group has a unique name (which is a string). All method calls, except ActionGroupExt::list_actions() take the name of an action as an argument.

The GActionGroup API is meant to be the ‘public’ API to the action group. The calls here are exactly the interaction that ‘external forces’ (eg: UI, incoming D-Bus messages, etc.) are supposed to have with actions. ‘Internal’ APIs (ie: ones meant only to be accessed by the action group implementation) are found on subclasses. This is why you will find - for example - ActionGroupExt::is_action_enabled() but not an equivalent set() call.

Signals are emitted on the action group in response to state changes on individual actions.

Implementations of GActionGroup should provide implementations for the virtual functions ActionGroupExt::list_actions() and Gio::ActionGroup::query_action(). The other virtual functions should not be implemented - their “wrappers” are actually implemented with calls to Gio::ActionGroup::query_action().

§Signals

§action-added

Signals that a new action was just added to the group. This signal is emitted after the action has been added and is now visible.

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§action-enabled-changed

Signals that the enabled status of the named action has changed.

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§action-removed

Signals that an action is just about to be removed from the group. This signal is emitted before the action is removed, so the action is still visible and can be queried from the signal handler.

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§action-state-changed

Signals that the state of the named action has changed.

Detailed

§Implements

ActionGroupExt

GLib type: GObject with reference counted clone semantics.

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impl ActionGroup

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pub const NONE: Option<&'static ActionGroup> = None

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impl Clone for ActionGroup

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fn clone(&self) -> Self

Makes a clone of this shared reference.

This increments the strong reference count of the object. Dropping the object will decrement it again.

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

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

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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 ActionGroup

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type ParamSpec = ParamSpecObject

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type SetValue = ActionGroup

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

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fn param_spec_builder() -> Self::BuilderFn

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impl Hash for ActionGroup

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

Hashes the memory address of this object.

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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<T: ActionGroupImpl> IsImplementable<T> for ActionGroup

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fn interface_init(iface: &mut Interface<Self>)

Override the virtual methods of this interface for the given subclass and do other interface initialization. Read more
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fn instance_init(_instance: &mut InitializingObject<T>)

Instance specific initialization. Read more
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impl Ord for ActionGroup

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

Comparison for two GObjects.

Compares the memory addresses of the provided objects.

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

Compares and returns the maximum of two values. Read more
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fn min(self, other: Self) -> Self
where Self: Sized,

Compares and returns the minimum of two values. Read more
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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<OT: ObjectType> PartialEq<OT> for ActionGroup

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

Equality for two GObjects.

Two GObjects are equal if their memory addresses are equal.

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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 ActionGroup

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

Partial comparison for two GObjects.

Compares the memory addresses of the provided objects.

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

This method tests less than (for self and other) and is used by the < operator. Read more
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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
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fn gt(&self, other: &Rhs) -> bool

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

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fn static_type() -> Type

Returns the type identifier of Self.
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impl Eq for ActionGroup

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impl IsA<ActionGroup> for Application

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impl IsA<ActionGroup> for DBusActionGroup

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impl IsA<ActionGroup> for RemoteActionGroup

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impl IsA<ActionGroup> for SimpleActionGroup

Auto Trait Implementations§

Blanket Implementations§

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impl<O> ActionGroupExt for O
where O: IsA<ActionGroup>,

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fn action_added(&self, action_name: &str)

Emits the #GActionGroup::action-added signal on @self. Read more
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fn action_enabled_changed(&self, action_name: &str, enabled: bool)

Emits the #GActionGroup::action-enabled-changed signal on @self. Read more
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fn action_removed(&self, action_name: &str)

Emits the #GActionGroup::action-removed signal on @self. Read more
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fn action_state_changed(&self, action_name: &str, state: &Variant)

Emits the #GActionGroup::action-state-changed signal on @self. Read more
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fn activate_action(&self, action_name: &str, parameter: Option<&Variant>)

Activate the named action within @self. Read more
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fn change_action_state(&self, action_name: &str, value: &Variant)

Request for the state of the named action within @self to be changed to @value. Read more
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fn is_action_enabled(&self, action_name: &str) -> bool

Checks if the named action within @self is currently enabled. Read more
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fn action_parameter_type(&self, action_name: &str) -> Option<VariantType>

Queries the type of the parameter that must be given when activating the named action within @self. Read more
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fn action_state(&self, action_name: &str) -> Option<Variant>

Queries the current state of the named action within @self. Read more
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fn action_state_hint(&self, action_name: &str) -> Option<Variant>

Requests a hint about the valid range of values for the state of the named action within @self. Read more
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fn action_state_type(&self, action_name: &str) -> Option<VariantType>

Queries the type of the state of the named action within @self. Read more
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fn has_action(&self, action_name: &str) -> bool

Checks if the named action exists within @self. Read more
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fn list_actions(&self) -> Vec<GString>

Lists the actions contained within @self. Read more
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fn connect_action_added<F: Fn(&Self, &str) + 'static>( &self, detail: Option<&str>, f: F, ) -> SignalHandlerId

Signals that a new action was just added to the group. This signal is emitted after the action has been added and is now visible. Read more
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fn connect_action_enabled_changed<F: Fn(&Self, &str, bool) + 'static>( &self, detail: Option<&str>, f: F, ) -> SignalHandlerId

Signals that the enabled status of the named action has changed. Read more
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fn connect_action_removed<F: Fn(&Self, &str) + 'static>( &self, detail: Option<&str>, f: F, ) -> SignalHandlerId

Signals that an action is just about to be removed from the group. This signal is emitted before the action is removed, so the action is still visible and can be queried from the signal handler. Read more
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fn connect_action_state_changed<F: Fn(&Self, &str, &Variant) + 'static>( &self, detail: Option<&str>, f: F, ) -> SignalHandlerId

Signals that the state of the named action has changed. Read more
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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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where T: ?Sized,

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Immutably borrows from an owned value. Read more
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where T: ObjectType, Self: MayDowncastTo<T>,

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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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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, *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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where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

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where T: Into<Value>,

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where U: StaticType,

Returns true if the object is an instance of (can be cast to) T.
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Returns the ObjectClass of the object. Read more
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Returns the class of the object.
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where U: IsInterface,

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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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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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Gets the property property_name of the object. Read more
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Check if the object has a property property_name of the given type_. Read more
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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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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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where QD: 'static,

Retrieve previously set arbitrary data of this object with the given key. Read more
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where QD: 'static,

Set arbitrary data on this object with the given key. Read more
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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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where F: Fn(&[Value]) -> Option<Value> + Send + Sync + 'static,

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where F: Fn(&[Value]) -> Option<Value> + 'static,

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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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Connect a closure to the signal signal_name on this object. Read more
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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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Same as Self::emit but takes Value for the arguments.
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Emit signal by its name. Read more
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Emit signal by its name. Read more
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Emit signal by its name with details. Read more
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Emit signal by its name with details. Read more
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Emit signal by signal id with details. Read more
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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<'a, 'f, 't, O>( &'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
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type Value = T

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fn get<R, F>(&self, f: F) -> R
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fn ensure_type()

Ensures that the type has been registered with the type system.
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type Owned = T

The resulting type after obtaining ownership.
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where U: Into<T>,

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type Error = Infallible

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Performs the conversion.
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Performs the conversion.
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