Struct glib::ParamSpec

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#[repr(transparent)]
pub struct ParamSpec { /* private fields */ }
Expand description

ParamSpec is an object structure that encapsulates the metadata required to specify parameters, such as e.g. Object properties.

Parameter names # {canonical-parameter-names}

A property name consists of one or more segments consisting of ASCII letters and digits, separated by either the - or _ character. The first character of a property name must be a letter. These are the same rules as for signal naming (see g_signal_new()).

When creating and looking up a ParamSpec, either separator can be used, but they cannot be mixed. Using - is considerably more efficient, and is the ‘canonical form’. Using _ is discouraged.

This is an Abstract Base Class, you cannot instantiate it.

Implementations§

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impl ParamSpec

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pub fn downcast<T: ParamSpecType>(self) -> Result<T, ParamSpec>

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pub fn downcast_ref<T: ParamSpecType>(&self) -> Option<&T>

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pub fn type_(&self) -> Type

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pub fn value_type(&self) -> Type

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pub fn owner_type(&self) -> Type

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pub fn flags(&self) -> ParamFlags

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pub fn blurb(&self) -> &str

Get the short description of a ParamSpec.

Returns

the short description of self.

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pub fn default_value(&self) -> &Value

Gets the default value of self as a pointer to a Value.

The Value will remain valid for the life of self.

Returns

a pointer to a Value which must not be modified

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pub fn name<'a>(&self) -> &'a str

Get the name of a ParamSpec.

The name is always an “interned” string (as per g_intern_string()). This allows for pointer-value comparisons.

Returns

the name of self.

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pub fn name_quark(&self) -> Quark

Gets the GQuark for the name.

Returns

the GQuark for self->name.

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pub fn nick(&self) -> &str

Get the nickname of a ParamSpec.

Returns

the nickname of self.

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pub fn redirect_target(&self) -> Option<ParamSpec>

If the paramspec redirects operations to another paramspec, returns that paramspec. Redirect is used typically for providing a new implementation of a property in a derived type while preserving all the properties from the parent type. Redirection is established by creating a property of type ParamSpecOverride. See g_object_class_override_property() for an example of the use of this capability.

Returns

paramspec to which requests on this paramspec should be redirected, or None if none.

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pub fn is_valid_name(name: &str) -> bool

Available on crate feature v2_66 only.

Validate a property name for a ParamSpec. This can be useful for dynamically-generated properties which need to be validated at run-time before actually trying to create them.

See [canonical parameter names][canonical-parameter-names] for details of the rules for valid names.

name

the canonical name of the property

Returns

true if name is a valid property name, false otherwise.

Trait Implementations§

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impl AsRef<ParamSpec> for ParamSpec

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fn as_ref(&self) -> &ParamSpec

Converts this type into a shared reference of the (usually inferred) input type.
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impl AsRef<ParamSpec> for ParamSpecBoolean

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fn as_ref(&self) -> &ParamSpec

Converts this type into a shared reference of the (usually inferred) input type.
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impl AsRef<ParamSpec> for ParamSpecBoxed

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fn as_ref(&self) -> &ParamSpec

Converts this type into a shared reference of the (usually inferred) input type.
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impl AsRef<ParamSpec> for ParamSpecChar

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fn as_ref(&self) -> &ParamSpec

Converts this type into a shared reference of the (usually inferred) input type.
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impl AsRef<ParamSpec> for ParamSpecDouble

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fn as_ref(&self) -> &ParamSpec

Converts this type into a shared reference of the (usually inferred) input type.
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impl AsRef<ParamSpec> for ParamSpecEnum

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fn as_ref(&self) -> &ParamSpec

Converts this type into a shared reference of the (usually inferred) input type.
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impl AsRef<ParamSpec> for ParamSpecFlags

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fn as_ref(&self) -> &ParamSpec

Converts this type into a shared reference of the (usually inferred) input type.
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impl AsRef<ParamSpec> for ParamSpecFloat

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fn as_ref(&self) -> &ParamSpec

Converts this type into a shared reference of the (usually inferred) input type.
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impl AsRef<ParamSpec> for ParamSpecGType

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fn as_ref(&self) -> &ParamSpec

Converts this type into a shared reference of the (usually inferred) input type.
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impl AsRef<ParamSpec> for ParamSpecInt

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fn as_ref(&self) -> &ParamSpec

Converts this type into a shared reference of the (usually inferred) input type.
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impl AsRef<ParamSpec> for ParamSpecInt64

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fn as_ref(&self) -> &ParamSpec

Converts this type into a shared reference of the (usually inferred) input type.
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impl AsRef<ParamSpec> for ParamSpecLong

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fn as_ref(&self) -> &ParamSpec

Converts this type into a shared reference of the (usually inferred) input type.
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impl AsRef<ParamSpec> for ParamSpecObject

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fn as_ref(&self) -> &ParamSpec

Converts this type into a shared reference of the (usually inferred) input type.
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impl AsRef<ParamSpec> for ParamSpecOverride

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fn as_ref(&self) -> &ParamSpec

Converts this type into a shared reference of the (usually inferred) input type.
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impl AsRef<ParamSpec> for ParamSpecParam

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fn as_ref(&self) -> &ParamSpec

Converts this type into a shared reference of the (usually inferred) input type.
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impl AsRef<ParamSpec> for ParamSpecPointer

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fn as_ref(&self) -> &ParamSpec

Converts this type into a shared reference of the (usually inferred) input type.
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impl AsRef<ParamSpec> for ParamSpecString

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fn as_ref(&self) -> &ParamSpec

Converts this type into a shared reference of the (usually inferred) input type.
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impl AsRef<ParamSpec> for ParamSpecUChar

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fn as_ref(&self) -> &ParamSpec

Converts this type into a shared reference of the (usually inferred) input type.
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impl AsRef<ParamSpec> for ParamSpecUInt

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fn as_ref(&self) -> &ParamSpec

Converts this type into a shared reference of the (usually inferred) input type.
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impl AsRef<ParamSpec> for ParamSpecUInt64

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fn as_ref(&self) -> &ParamSpec

Converts this type into a shared reference of the (usually inferred) input type.
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impl AsRef<ParamSpec> for ParamSpecULong

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fn as_ref(&self) -> &ParamSpec

Converts this type into a shared reference of the (usually inferred) input type.
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impl AsRef<ParamSpec> for ParamSpecUnichar

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fn as_ref(&self) -> &ParamSpec

Converts this type into a shared reference of the (usually inferred) input type.
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impl AsRef<ParamSpec> for ParamSpecValueArray

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fn as_ref(&self) -> &ParamSpec

Converts this type into a shared reference of the (usually inferred) input type.
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impl AsRef<ParamSpec> for ParamSpecVariant

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fn as_ref(&self) -> &ParamSpec

Converts this type into a shared reference of the (usually inferred) input type.
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impl Clone for ParamSpec

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fn clone(&self) -> Self

Returns a copy of the value. Read more
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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 ParamSpec

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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 Hash for ParamSpec

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

Feeds this value into the given Hasher. Read more
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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 Ord for ParamSpec

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

This method returns an Ordering between self and other. Read more
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fn max(self, other: Self) -> Selfwhere Self: Sized,

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

Compares and returns the minimum of two values. Read more
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fn clamp(self, min: Self, max: Self) -> Selfwhere Self: Sized + PartialOrd<Self>,

Restrict a value to a certain interval. Read more
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impl PartialEq<ParamSpec> for ParamSpec

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

This method tests for self and other values to be equal, and is used by ==.
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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 PartialOrd<ParamSpec> for ParamSpec

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

This method returns an ordering between self and other values if one exists. Read more
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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 ParamSpec

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fn static_type() -> Type

Returns the type identifier of Self.
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impl Eq for ParamSpec

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impl Send for ParamSpec

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impl StructuralEq for ParamSpec

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impl StructuralPartialEq for ParamSpec

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impl Sync for ParamSpec

Auto Trait Implementations§

Blanket Implementations§

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

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for Twhere T: ?Sized,

const: unstable · source§

fn borrow(&self) -> &T

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

const: unstable · source§

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

Mutably borrows from an owned value. Read more
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impl<T> From<T> for T

const: unstable · source§

fn from(t: T) -> T

Returns the argument unchanged.

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impl<T> FromGlibContainerAsVec<<T as GlibPtrDefault>::GlibType, *const GList> for Twhere T: GlibPtrDefault + FromGlibPtrNone<<T as GlibPtrDefault>::GlibType> + FromGlibPtrFull<<T as GlibPtrDefault>::GlibType>,

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impl<T> FromGlibContainerAsVec<<T as GlibPtrDefault>::GlibType, *const GPtrArray> for Twhere T: GlibPtrDefault + FromGlibPtrNone<<T as GlibPtrDefault>::GlibType> + FromGlibPtrFull<<T as GlibPtrDefault>::GlibType>,

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unsafe fn from_glib_none_num_as_vec( ptr: *const GPtrArray, num: usize ) -> Vec<T, Global>

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unsafe fn from_glib_container_num_as_vec( _: *const GPtrArray, _: usize ) -> Vec<T, Global>

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unsafe fn from_glib_full_num_as_vec( _: *const GPtrArray, _: usize ) -> Vec<T, Global>

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impl<T> FromGlibContainerAsVec<<T as GlibPtrDefault>::GlibType, *const GSList> for Twhere T: GlibPtrDefault + FromGlibPtrNone<<T as GlibPtrDefault>::GlibType> + FromGlibPtrFull<<T as GlibPtrDefault>::GlibType>,

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unsafe fn from_glib_none_num_as_vec( ptr: *const GSList, num: usize ) -> Vec<T, Global>

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unsafe fn from_glib_container_num_as_vec( _: *const GSList, _: usize ) -> Vec<T, Global>

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unsafe fn from_glib_full_num_as_vec( _: *const GSList, _: usize ) -> Vec<T, Global>

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impl<T> FromGlibContainerAsVec<<T as GlibPtrDefault>::GlibType, *mut GList> for Twhere T: GlibPtrDefault + FromGlibPtrNone<<T as GlibPtrDefault>::GlibType> + FromGlibPtrFull<<T as GlibPtrDefault>::GlibType>,

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unsafe fn from_glib_none_num_as_vec( ptr: *mut GList, num: usize ) -> Vec<T, Global>

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unsafe fn from_glib_container_num_as_vec( ptr: *mut GList, num: usize ) -> Vec<T, Global>

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unsafe fn from_glib_full_num_as_vec( ptr: *mut GList, num: usize ) -> Vec<T, Global>

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impl<T> FromGlibContainerAsVec<<T as GlibPtrDefault>::GlibType, *mut GPtrArray> for Twhere T: GlibPtrDefault + FromGlibPtrNone<<T as GlibPtrDefault>::GlibType> + FromGlibPtrFull<<T as GlibPtrDefault>::GlibType>,

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unsafe fn from_glib_none_num_as_vec( ptr: *mut GPtrArray, num: usize ) -> Vec<T, Global>

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unsafe fn from_glib_container_num_as_vec( ptr: *mut GPtrArray, num: usize ) -> Vec<T, Global>

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unsafe fn from_glib_full_num_as_vec( ptr: *mut GPtrArray, num: usize ) -> Vec<T, Global>

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impl<T> FromGlibContainerAsVec<<T as GlibPtrDefault>::GlibType, *mut GSList> for Twhere T: GlibPtrDefault + FromGlibPtrNone<<T as GlibPtrDefault>::GlibType> + FromGlibPtrFull<<T as GlibPtrDefault>::GlibType>,

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unsafe fn from_glib_none_num_as_vec( ptr: *mut GSList, num: usize ) -> Vec<T, Global>

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unsafe fn from_glib_container_num_as_vec( ptr: *mut GSList, num: usize ) -> Vec<T, Global>

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unsafe fn from_glib_full_num_as_vec( ptr: *mut GSList, num: usize ) -> Vec<T, Global>

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impl<T> FromGlibPtrArrayContainerAsVec<<T as GlibPtrDefault>::GlibType, *const GList> for Twhere T: GlibPtrDefault + FromGlibPtrNone<<T as GlibPtrDefault>::GlibType> + FromGlibPtrFull<<T as GlibPtrDefault>::GlibType>,

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impl<T> FromGlibPtrArrayContainerAsVec<<T as GlibPtrDefault>::GlibType, *const GPtrArray> for Twhere T: GlibPtrDefault + FromGlibPtrNone<<T as GlibPtrDefault>::GlibType> + FromGlibPtrFull<<T as GlibPtrDefault>::GlibType>,

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unsafe fn from_glib_none_as_vec(ptr: *const GPtrArray) -> Vec<T, Global>

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unsafe fn from_glib_container_as_vec(_: *const GPtrArray) -> Vec<T, Global>

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unsafe fn from_glib_full_as_vec(_: *const GPtrArray) -> Vec<T, Global>

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impl<T> FromGlibPtrArrayContainerAsVec<<T as GlibPtrDefault>::GlibType, *const GSList> for Twhere T: GlibPtrDefault + FromGlibPtrNone<<T as GlibPtrDefault>::GlibType> + FromGlibPtrFull<<T as GlibPtrDefault>::GlibType>,

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impl<T> FromGlibPtrArrayContainerAsVec<<T as GlibPtrDefault>::GlibType, *mut GList> for Twhere T: GlibPtrDefault + FromGlibPtrNone<<T as GlibPtrDefault>::GlibType> + FromGlibPtrFull<<T as GlibPtrDefault>::GlibType>,

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unsafe fn from_glib_none_as_vec(ptr: *mut GList) -> Vec<T, Global>

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unsafe fn from_glib_container_as_vec(ptr: *mut GList) -> Vec<T, Global>

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unsafe fn from_glib_full_as_vec(ptr: *mut GList) -> Vec<T, Global>

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impl<T> FromGlibPtrArrayContainerAsVec<<T as GlibPtrDefault>::GlibType, *mut GPtrArray> for Twhere T: GlibPtrDefault + FromGlibPtrNone<<T as GlibPtrDefault>::GlibType> + FromGlibPtrFull<<T as GlibPtrDefault>::GlibType>,

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unsafe fn from_glib_none_as_vec(ptr: *mut GPtrArray) -> Vec<T, Global>

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unsafe fn from_glib_container_as_vec(ptr: *mut GPtrArray) -> Vec<T, Global>

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unsafe fn from_glib_full_as_vec(ptr: *mut GPtrArray) -> Vec<T, Global>

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impl<T> FromGlibPtrArrayContainerAsVec<<T as GlibPtrDefault>::GlibType, *mut GSList> for Twhere T: GlibPtrDefault + FromGlibPtrNone<<T as GlibPtrDefault>::GlibType> + FromGlibPtrFull<<T as GlibPtrDefault>::GlibType>,

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unsafe fn from_glib_none_as_vec(ptr: *mut GSList) -> Vec<T, Global>

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unsafe fn from_glib_container_as_vec(ptr: *mut GSList) -> Vec<T, Global>

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unsafe fn from_glib_full_as_vec(ptr: *mut GSList) -> Vec<T, Global>

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impl<T, U> Into<U> for Twhere U: From<T>,

const: unstable · source§

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> StaticTypeExt for Twhere 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> ToClosureReturnValue for Twhere T: ToValue,

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impl<T> ToOwned for Twhere 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 Twhere 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, U> TryFrom<U> for Twhere 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 Twhere T: for<'a> FromValue<'a> + StaticType + 'static,

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impl<T, U> TryInto<U> for Twhere 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> FromValueOptional<'a> for Twhere T: FromValue<'a, Checker = C>, C: ValueTypeChecker<Error = ValueTypeMismatchOrNoneError>,