gtkmm: Gtk::FilterListModel Class Reference

A list model that filters its items. More...

#include <gtkmm/filterlistmodel.h>

Inheritance diagram for Gtk::FilterListModel:

[legend]

Public Member Functions
	FilterListModel (FilterListModel &&src) noexcept

FilterListModel &	operator= (FilterListModel &&src) noexcept

	~FilterListModel () noexcept override

GtkFilterListModel *	gobj ()
	Provides access to the underlying C GObject.

const GtkFilterListModel *	gobj () const
	Provides access to the underlying C GObject.

GtkFilterListModel *	gobj_copy ()
	Provides access to the underlying C instance. The caller is responsible for unrefing it. Use when directly setting fields in structs.

void	set_filter (const Glib::RefPtr< Filter > &filter)
	Sets the filter used to filter items.

Glib::RefPtr< Filter >	get_filter ()
	Gets the `Gtk::Filter` currently set on self.

Glib::RefPtr< const Filter >	get_filter () const
	Gets the `Gtk::Filter` currently set on self.

void	set_model (const Glib::RefPtr< Gio::ListModel > &model)
	Sets the model to be filtered.

Glib::RefPtr< Gio::ListModel >	get_model ()
	Gets the model currently filtered or `nullptr` if none.

Glib::RefPtr< const Gio::ListModel >	get_model () const
	Gets the model currently filtered or `nullptr` if none.

void	set_incremental (bool incremental=true)
	Sets the filter model to do an incremental sort.

bool	get_incremental () const
	Returns whether incremental filtering is enabled.

guint	get_pending () const
	Returns the number of items that have not been filtered yet.

Glib::PropertyProxy< Glib::RefPtr< Filter > >	property_filter ()
	The filter for this model.

Glib::PropertyProxy_ReadOnly< Glib::RefPtr< Filter > >	property_filter () const
	The filter for this model.

Glib::PropertyProxy< bool >	property_incremental ()
	If the model should filter items incrementally.

Glib::PropertyProxy_ReadOnly< bool >	property_incremental () const
	If the model should filter items incrementally.

Glib::PropertyProxy_ReadOnly< GType >	property_item_type () const
	The type of items.

Glib::PropertyProxy< Glib::RefPtr< Gio::ListModel > >	property_model ()
	The model being filtered.

Glib::PropertyProxy_ReadOnly< Glib::RefPtr< Gio::ListModel > >	property_model () const
	The model being filtered.

Glib::PropertyProxy_ReadOnly< unsigned int >	property_n_items () const
	The number of items.

Glib::PropertyProxy_ReadOnly< guint >	property_pending () const
	Number of items not yet filtered.

Static Public Member Functions
static GType	get_type ()
	Get the GType for this class, for use with the underlying GObject type system.

static Glib::RefPtr< FilterListModel >	create (const Glib::RefPtr< Gio::ListModel > &model, const Glib::RefPtr< Filter > &filter)

Protected Member Functions
	FilterListModel (const Glib::RefPtr< Gio::ListModel > &model, const Glib::RefPtr< Filter > &filter)

Related Symbols
(Note that these are not member symbols.)
Glib::RefPtr< Gtk::FilterListModel >	wrap (GtkFilterListModel *object, bool take_copy=false)
	A Glib::wrap() method for this object.

Detailed Description

A list model that filters its items.

Gtk::FilterListModel is a list model that filters a given other listmodel. It hides some elements from the other model according to criteria given by a Gtk::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.

See also: Gio::ListModel, Gtk::Filter

Since gtkmm 3.98:

Constructor & Destructor Documentation

◆ FilterListModel() [1/2]

Gtk::FilterListModel::FilterListModel ( FilterListModel && src )

noexcept

◆ ~FilterListModel()

Gtk::FilterListModel::~FilterListModel ( )

overridenoexcept

◆ FilterListModel() [2/2]

Gtk::FilterListModel::FilterListModel	(	const Glib::RefPtr< Gio::ListModel > &	model,
		const Glib::RefPtr< Filter > &	filter
	)

explicitprotected

Member Function Documentation

◆ create()

static Glib::RefPtr< FilterListModel > Gtk::FilterListModel::create	(	const Glib::RefPtr< Gio::ListModel > &	model,
		const Glib::RefPtr< Filter > &	filter
	)

static

◆ get_filter() [1/2]

Glib::RefPtr< Filter > Gtk::FilterListModel::get_filter ( )

Gets the Gtk::Filter currently set on self.

Returns: The filter currently in use.

◆ get_filter() [2/2]

Glib::RefPtr< const Filter > Gtk::FilterListModel::get_filter ( ) const

Gets the Gtk::Filter currently set on self.

Returns: The filter currently in use.

◆ get_incremental()

bool Gtk::FilterListModel::get_incremental ( ) const

Returns whether incremental filtering is enabled.

See set_incremental().

Returns: true if incremental filtering is enabled.

◆ get_model() [1/2]

Glib::RefPtr< Gio::ListModel > Gtk::FilterListModel::get_model ( )

Gets the model currently filtered or nullptr if none.

Returns: The model that gets filtered.

◆ get_model() [2/2]

Glib::RefPtr< const Gio::ListModel > Gtk::FilterListModel::get_model ( ) const

Gets the model currently filtered or nullptr if none.

Returns: The model that gets filtered.

◆ get_pending()

guint Gtk::FilterListModel::get_pending ( ) const

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:

[C example ellipted]

If no filter operation is ongoing - in particular when property_incremental() is false - this function returns 0.

Returns: The number of items not yet filtered.

◆ get_type()

static GType Gtk::FilterListModel::get_type ( )

static

Get the GType for this class, for use with the underlying GObject type system.

◆ gobj() [1/2]

GtkFilterListModel * Gtk::FilterListModel::gobj ( )

inline

Provides access to the underlying C GObject.

◆ gobj() [2/2]

const GtkFilterListModel * Gtk::FilterListModel::gobj ( ) const

inline

Provides access to the underlying C GObject.

◆ gobj_copy()

GtkFilterListModel * Gtk::FilterListModel::gobj_copy ( )

Provides access to the underlying C instance. The caller is responsible for unrefing it. Use when directly setting fields in structs.

◆ operator=()

FilterListModel & Gtk::FilterListModel::operator= ( FilterListModel && src )

noexcept

◆ property_filter() [1/2]

Glib::PropertyProxy< Glib::RefPtr< Filter > > Gtk::FilterListModel::property_filter ( )

The filter for this model.

Returns: A PropertyProxy that allows you to get or set the value of the property, or receive notification when the value of the property changes.

◆ property_filter() [2/2]

Glib::PropertyProxy_ReadOnly< Glib::RefPtr< Filter > > Gtk::FilterListModel::property_filter ( ) const

The filter for this model.

Returns: A PropertyProxy_ReadOnly that allows you to get the value of the property, or receive notification when the value of the property changes.

◆ property_incremental() [1/2]

Glib::PropertyProxy< bool > Gtk::FilterListModel::property_incremental ( )

If the model should filter items incrementally.

Default value: false

Returns: A PropertyProxy that allows you to get or set the value of the property, or receive notification when the value of the property changes.

◆ property_incremental() [2/2]

Glib::PropertyProxy_ReadOnly< bool > Gtk::FilterListModel::property_incremental ( ) const

If the model should filter items incrementally.

Default value: false

Returns: A PropertyProxy_ReadOnly that allows you to get the value of the property, or receive notification when the value of the property changes.

◆ property_item_type()

Glib::PropertyProxy_ReadOnly< GType > Gtk::FilterListModel::property_item_type ( ) const

The type of items.

See Gio::ListModel::get_item_type().

Since gtkmm 4.8:

Returns: A PropertyProxy_ReadOnly that allows you to get the value of the property, or receive notification when the value of the property changes.

◆ property_model() [1/2]

Glib::PropertyProxy< Glib::RefPtr< Gio::ListModel > > Gtk::FilterListModel::property_model ( )

The model being filtered.

Returns: A PropertyProxy that allows you to get or set the value of the property, or receive notification when the value of the property changes.

◆ property_model() [2/2]

Glib::PropertyProxy_ReadOnly< Glib::RefPtr< Gio::ListModel > > Gtk::FilterListModel::property_model ( ) const

The model being filtered.

Returns: A PropertyProxy_ReadOnly that allows you to get the value of the property, or receive notification when the value of the property changes.

◆ property_n_items()

Glib::PropertyProxy_ReadOnly< unsigned int > Gtk::FilterListModel::property_n_items ( ) const

The number of items.

See Gio::ListModel::get_n_items().

Since gtkmm 4.8:

Default value: 0

Returns: A PropertyProxy_ReadOnly that allows you to get the value of the property, or receive notification when the value of the property changes.

◆ property_pending()

Glib::PropertyProxy_ReadOnly< guint > Gtk::FilterListModel::property_pending ( ) const

Number of items not yet filtered.

Default value: 0

Returns: A PropertyProxy_ReadOnly that allows you to get the value of the property, or receive notification when the value of the property changes.

◆ set_filter()

void Gtk::FilterListModel::set_filter ( const Glib::RefPtr< Filter > & filter )

Sets the filter used to filter items.

Parameters

filter Filter to use.

◆ set_incremental()

void Gtk::FilterListModel::set_incremental ( bool incremental = true )

Sets the filter model to do an incremental sort.

When incremental filtering is enabled, the Gtk::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 get_pending() for progress information about an ongoing incremental filtering operation.

Parameters

incremental true to enable incremental filtering.

◆ set_model()

void Gtk::FilterListModel::set_model ( const Glib::RefPtr< Gio::ListModel > & model )

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.

Parameters

model The model to be filtered.

Friends And Related Symbol Documentation

◆ wrap()

Glib::RefPtr< Gtk::FilterListModel > wrap	(	GtkFilterListModel *	object,
		bool	take_copy = `false`
	)

A Glib::wrap() method for this object.

Parameters

object	The C instance.
take_copy	False if the result should take ownership of the C instance. True if it should take a new copy or ref.

Returns: A C++ instance that wraps this C instance.

Public Member Functions

Static Public Member Functions

Protected Member Functions

Related Symbols

Detailed Description

Constructor & Destructor Documentation

◆ FilterListModel() [1/2]

◆ ~FilterListModel()

◆ FilterListModel() [2/2]

Member Function Documentation

◆ create()

◆ get_filter() [1/2]

◆ get_filter() [2/2]

◆ get_incremental()

◆ get_model() [1/2]

◆ get_model() [2/2]

◆ get_pending()

◆ get_type()

◆ gobj() [1/2]

◆ gobj() [2/2]

◆ gobj_copy()

◆ operator=()

◆ property_filter() [1/2]

◆ property_filter() [2/2]

◆ property_incremental() [1/2]

◆ property_incremental() [2/2]

◆ property_item_type()

◆ property_model() [1/2]

◆ property_model() [2/2]

◆ property_n_items()

◆ property_pending()

◆ set_filter()

◆ set_incremental()

◆ set_model()

Friends And Related Symbol Documentation

◆ wrap()