#[repr(transparent)]pub struct Filter { /* private fields */ }
Expand description
A Filter
object describes the filtering to be performed by a
FilterListModel
.
The model will use the filter to determine if it should include items
or not by calling FilterExt::match_()
for each item and only
keeping the ones that the function returns true
for.
Filters may change what items they match through their lifetime. In that
case, they will emit the changed
signal to notify
that previous filter results are no longer valid and that items should
be checked again via FilterExt::match_()
.
GTK provides various pre-made filter implementations for common filtering operations. These filters often include properties that can be linked to various widgets to easily allow searches.
However, in particular for large lists or complex search methods, it is
also possible to subclass Filter
and provide one’s own filter.
Signals
changed
Emitted whenever the filter changed.
Users of the filter should then check items again via
FilterExt::match_()
.
FilterListModel
handles this signal automatically.
Depending on the @change parameter, not all items need
to be checked, but only some. Refer to the FilterChange
documentation for details.
Implements
Implementations§
Trait Implementations§
source§impl HasParamSpec for Filter
impl HasParamSpec for Filter
source§impl<T: FilterImpl> IsSubclassable<T> for Filter
impl<T: FilterImpl> IsSubclassable<T> for Filter
source§fn class_init(class: &mut Class<Self>)
fn class_init(class: &mut Class<Self>)
source§fn instance_init(instance: &mut InitializingObject<T>)
fn instance_init(instance: &mut InitializingObject<T>)
source§impl Ord for Filter
impl Ord for Filter
source§impl<OT: ObjectType> PartialEq<OT> for Filter
impl<OT: ObjectType> PartialEq<OT> for Filter
source§impl<OT: ObjectType> PartialOrd<OT> for Filter
impl<OT: ObjectType> PartialOrd<OT> for Filter
1.0.0 · source§fn le(&self, other: &Rhs) -> bool
fn le(&self, other: &Rhs) -> bool
self
and other
) and is used by the <=
operator. Read moresource§impl StaticType for Filter
impl StaticType for Filter
source§fn static_type() -> Type
fn static_type() -> Type
Self
.impl Eq for Filter
impl IsA<Filter> for AnyFilter
impl IsA<Filter> for BoolFilter
impl IsA<Filter> for CustomFilter
impl IsA<Filter> for EveryFilter
impl IsA<Filter> for FileFilter
impl IsA<Filter> for MultiFilter
impl IsA<Filter> for StringFilter
Auto Trait Implementations§
impl RefUnwindSafe for Filter
impl !Send for Filter
impl !Sync for Filter
impl Unpin for Filter
impl UnwindSafe for Filter
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