Struct gtk4::FilterListModel
source · #[repr(transparent)]pub struct FilterListModel { /* private fields */ }
Expand description
FilterListModel
is a list model that filters the elements of
the underlying model according to a Filter
.
It hides some elements from the other model according to
criteria given by a Filter
.
The model can be set up to do incremental searching, so that
filtering long lists doesn’t block the UI. See
set_incremental()
for details.
Properties
filter
The filter for this model.
Readable | Writeable
incremental
If the model should filter items incrementally.
Readable | Writeable
item-type
The type of items. See [ListModelExtManual::item_type()
][crate::gio::prelude::ListModelExtManual::item_type()].
Readable
model
The model being filtered.
Readable | Writeable
n-items
The number of items. See [ListModelExtManual::n_items()
][crate::gio::prelude::ListModelExtManual::n_items()].
Readable
pending
Number of items not yet filtered.
Readable
Implements
Implementations§
source§impl FilterListModel
impl FilterListModel
sourcepub fn new(
model: Option<impl IsA<ListModel>>,
filter: Option<impl IsA<Filter>>
) -> FilterListModel
pub fn new( model: Option<impl IsA<ListModel>>, filter: Option<impl IsA<Filter>> ) -> FilterListModel
Creates a new FilterListModel
that will filter @model using the given
@filter.
model
the model to sort
filter
filter
Returns
a new FilterListModel
sourcepub fn builder() -> FilterListModelBuilder
pub fn builder() -> FilterListModelBuilder
Creates a new builder-pattern struct instance to construct FilterListModel
objects.
This method returns an instance of FilterListModelBuilder
which can be used to create FilterListModel
objects.
sourcepub fn is_incremental(&self) -> bool
pub fn is_incremental(&self) -> bool
Returns whether incremental filtering is enabled.
See set_incremental()
.
Returns
true
if incremental filtering is enabled
sourcepub fn pending(&self) -> u32
pub fn pending(&self) -> u32
Returns the number of items that have not been filtered yet.
You can use this value to check if @self is busy filtering by comparing the return value to 0 or you can compute the percentage of the filter remaining by dividing the return value by the total number of items in the underlying model:
⚠️ The following code is in c ⚠️
pending = gtk_filter_list_model_get_pending (self);
model = gtk_filter_list_model_get_model (self);
percentage = pending / (double) g_list_model_get_n_items (model);
If no filter operation is ongoing - in particular when
incremental
is false
- this
function returns 0.
Returns
The number of items not yet filtered
sourcepub fn set_filter(&self, filter: Option<&impl IsA<Filter>>)
pub fn set_filter(&self, filter: Option<&impl IsA<Filter>>)
sourcepub fn set_incremental(&self, incremental: bool)
pub fn set_incremental(&self, incremental: bool)
Sets the filter model to do an incremental sort.
When incremental filtering is enabled, the FilterListModel
will not
run filters immediately, but will instead queue an idle handler that
incrementally filters the items and adds them to the list. This of course
means that items are not instantly added to the list, but only appear
incrementally.
When your filter blocks the UI while filtering, you might consider turning this on. Depending on your model and filters, this may become interesting around 10,000 to 100,000 items.
By default, incremental filtering is disabled.
See pending()
for progress information
about an ongoing incremental filtering operation.
incremental
true
to enable incremental filtering
sourcepub fn set_model(&self, model: Option<&impl IsA<ListModel>>)
pub fn set_model(&self, model: Option<&impl IsA<ListModel>>)
Sets the model to be filtered.
Note that GTK makes no effort to ensure that @model conforms to the item type of @self. It assumes that the caller knows what they are doing and have set up an appropriate filter to ensure that item types match.
model
The model to be filtered
pub fn connect_filter_notify<F: Fn(&Self) + 'static>( &self, f: F ) -> SignalHandlerId
pub fn connect_incremental_notify<F: Fn(&Self) + 'static>( &self, f: F ) -> SignalHandlerId
pub fn connect_model_notify<F: Fn(&Self) + 'static>( &self, f: F ) -> SignalHandlerId
pub fn connect_pending_notify<F: Fn(&Self) + 'static>( &self, f: F ) -> SignalHandlerId
Trait Implementations§
source§impl Clone for FilterListModel
impl Clone for FilterListModel
source§impl Debug for FilterListModel
impl Debug for FilterListModel
source§impl Default for FilterListModel
impl Default for FilterListModel
source§impl Display for FilterListModel
impl Display for FilterListModel
source§impl HasParamSpec for FilterListModel
impl HasParamSpec for FilterListModel
type ParamSpec = ParamSpecObject
§type SetValue = FilterListModel
type SetValue = FilterListModel
type BuilderFn = fn(_: &str) -> ParamSpecObjectBuilder<'_, FilterListModel>
fn param_spec_builder() -> Self::BuilderFn
source§impl Hash for FilterListModel
impl Hash for FilterListModel
source§impl Ord for FilterListModel
impl Ord for FilterListModel
source§impl ParentClassIs for FilterListModel
impl ParentClassIs for FilterListModel
source§impl<OT: ObjectType> PartialEq<OT> for FilterListModel
impl<OT: ObjectType> PartialEq<OT> for FilterListModel
source§impl<OT: ObjectType> PartialOrd<OT> for FilterListModel
impl<OT: ObjectType> PartialOrd<OT> for FilterListModel
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 FilterListModel
impl StaticType for FilterListModel
source§fn static_type() -> Type
fn static_type() -> Type
Self
.impl Eq for FilterListModel
impl IsA<ListModel> for FilterListModel
Auto Trait Implementations§
impl RefUnwindSafe for FilterListModel
impl !Send for FilterListModel
impl !Sync for FilterListModel
impl Unpin for FilterListModel
impl UnwindSafe for FilterListModel
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unsafe fn connect_notify_unsafe<F>( &self, name: Option<&str>, f: F ) -> SignalHandlerIdwhere F: Fn(&T, &ParamSpec),
notify
signal of the object. Read more