Struct ForwardingAction

pub struct ForwardingAction(/* private fields */);

ForwardingAction is the base class for the action classes that read and send arguments, such as SetPropertyAction or DispatchMessageAction.

ForwardingAction contains functionality to read arguments from sources, such as messages, properties or set values, and allows the inheriting action class to use these values. This usually means sending messages or setting values of properties.

Examples

To derive an action class from the ForwardingAction class:

Methods from Deref<Target = Action>

pub fn get_delay(&self) -> Result<i32, Error>

See: DELAY_PROPERTY

pub fn set_delay(&self, value: i32) -> Result<(), Error>

See: DELAY_PROPERTY

pub fn get_trigger(&self) -> Result<Option<Weak<Trigger>>, Error>

Returns the pointer to a Trigger to which an Action is attached.

pub fn invoke(&self) -> Result<(), Error>

Invokes the Action.

Errors

Returns an OBJECT_NOT_FOUND error if the function is called without an attached trigger.

Methods from Deref<Target = ActionBase>

pub fn get_name(&self) -> Result<KanziString, Error>

Returns the name of the action

Methods from Deref<Target = Object>

pub fn as_ptr(&self) -> *mut ObjectWrapper

pub fn as_wrapper(&self) -> &ObjectWrapper

pub fn as_object(&self) -> &Object

Represents any type inheriting from Object as &Object. This is useful for comparisions when PartialEq traits failed to compare objects of different types.

let child = screen.get_child(0)?;
let parent = child.get_parent()?.into_error(ErrorKind::ObjectNotFound)?;
// assert_eq!(screen, parent); // <- Fails to compile!
assert_eq!(screen.as_object(), parent.as_object());

pub fn get_native(&self) -> Result<NonNull<c_void>, Error>

Gets a pointer to the backing C++ instance.

pub fn is_stale(&self) -> bool

Checks whether the weak reference has expired.

pub fn get_property<T>( &self, property_type: &PropertyType<T>, ) -> Result<<T as VariantConstraint>::RetArg, Error>

where T: PropertyTypeConstraint,

Returns the current value of a property disregarding modifiers.

Base value is affected by the following inputs where the highest entry in the list determines the base value:

1. Local value set with setProperty or loaded from kzb
2. Value set by a style affecting the property.
3. Value defined by class metadata.

Modifiers are not applied, the highest-priority base value is returned.

If no inputs to the property value can be established the system returns the value default value from property type metadata.

Arguments

• property_type - The property type identifying the property to retrieve.

Returns

The evaluated property value.

pub fn get_optional_property<T>( &self, property_type: &PropertyType<T>, ) -> Result<Option<<T as VariantConstraint>::RetArg>, Error>

where T: PropertyTypeConstraint,

Returns the current value of a property disregarding modifiers, but does not default to the value in property metadata if there are no inputs to the property value.

If there is no value sources, None is returned.

If no inputs to the property value can be established the system returns the value default value from property type metadata.

Arguments

• property_type - The property type identifying the property to retrieve.

Returns

The evaluated property value.

pub fn set_property<T>( &self, property_type: &PropertyType<T>, value: <T as VariantConstraint>::DataArg<'_>, ) -> Result<(), Error>

where T: PropertyTypeConstraint,

Sets the local value of a property type.

pub fn has_value<T>( &self, property_type: &PropertyType<T>, ) -> Result<bool, Error>

where T: PropertyTypeConstraint,

Evaluates whether there are any inputs into the property value. Both value sources and modifiers are taken into account.

Returns

Returns true if there are inputs into the property value, false otherwise.

pub fn remove_local_value<T>( &self, property_type: &PropertyType<T>, ) -> Result<(), Error>

where T: PropertyTypeConstraint,

Removes the local value associated with the property.

pub fn get_metaclass(&self) -> Result<Metaclass, Error>

Returns the metaclass of the dynamic type of the object.

pub fn get_domain(&self) -> Result<Domain, Error>

Returns the domain the object belongs to.

pub fn set_flag_keep_during_patching<T>( &self, property_type: &PropertyType<T>, ) -> Result<(), Error>

where T: PropertyTypeConstraint,

Sets the flag to indicate that the property was loaded from KZB.

pub fn debug_string(&self) -> Result<String, Error>

Builds a string representation of the object intended for debugging purposes.

Trait Implementations

impl Clone for ForwardingAction

fn clone(&self) -> ForwardingAction

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for ForwardingAction

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

Formats the value using the given formatter.

impl Deref for ForwardingAction

type Target = Action

The resulting type after dereferencing.

fn deref(&self) -> &<ForwardingAction as Deref>::Target

Dereferences the value.

impl Inheritable for ForwardingAction

unsafe fn downcast_unchecked<T>(self) -> T

where T: Inherits<Self>,

Downcast the object to a more specific type.

unsafe fn downcast_unchecked_ref<T>(&self) -> &T

where T: Inherits<Self>,

Downcast the object reference to a more specific type.

impl Inherits<Action> for ForwardingAction

fn upcast(self) -> Base

fn upcast_ref(&self) -> &Base

impl Inherits<ActionBase> for ForwardingAction

fn upcast(self) -> Base

fn upcast_ref(&self) -> &Base

impl Inherits<ForwardingAction> for DispatchMessageAction

fn upcast(self) -> Base

fn upcast_ref(&self) -> &Base

impl Inherits<ForwardingAction> for SetPropertyAction

fn upcast(self) -> Base

fn upcast_ref(&self) -> &Base

impl Inherits<ForwardingAction> for WriteLogAction

fn upcast(self) -> Base

fn upcast_ref(&self) -> &Base

impl Inherits<Object> for ForwardingAction

fn upcast(self) -> Base

fn upcast_ref(&self) -> &Base

impl MetaclassConstraint for ForwardingAction

fn get_static_metaclass() -> &'static Metaclass

Gets metaclass associated with a given type.

impl ObjectConstraint for ForwardingAction

fn downcast<T>(self) -> Result<Option<T>, Error>

where T: MetaInherits<Self>,

Casts metaclass to a more specific type by value.

fn downcast_ref<T>(&self) -> Result<Option<&T>, Error>

where T: MetaInherits<Self>,

Casts metaclass to a more specific type by reference.

fn is_a<T>(&self) -> Result<bool, Error>

where T: MetaInherits<Self>,

Determines whether the class this metaclass describes derives from a class described by specified metaclass.

fn downgrade(self) -> Weak<Self>

fn downgrade_ref(&self) -> Weak<Self>

fn lock(self) -> ThreadObject<Self>

fn lock_ref(&self) -> ThreadObject<Self>

impl<T> PartialEq<T> for ForwardingAction

where T: ObjectConstraint,

fn eq(&self, rhs: &T) -> bool

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl<T> PartialEq<Weak<T>> for ForwardingAction

where T: ObjectConstraint,

fn eq(&self, rhs: &Weak<T>) -> bool

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Eq for ForwardingAction