Gtk::ColumnViewSorter Class Reference

A sorter implementation that is geared towards the needs of Gtk::ColumnView. More...

#include <gtkmm/columnviewsorter.h>

Inheritance diagram for Gtk::ColumnViewSorter:

Public Member Functions
	ColumnViewSorter (ColumnViewSorter &&src) noexcept
ColumnViewSorter &	operator= (ColumnViewSorter &&src) noexcept
	~ColumnViewSorter () noexcept override
GtkColumnViewSorter *	gobj ()
	Provides access to the underlying C GObject.
const GtkColumnViewSorter *	gobj () const
	Provides access to the underlying C GObject.
GtkColumnViewSorter *	gobj_copy ()
	Provides access to the underlying C instance. The caller is responsible for unrefing it. Use when directly setting fields in structs.
Glib::RefPtr< ColumnViewColumn >	get_primary_sort_column ()
	Returns the primary sort column.
Glib::RefPtr< const ColumnViewColumn >	get_primary_sort_column () const
	Returns the primary sort column.
SortType	get_primary_sort_order () const
	Returns the primary sort order.
unsigned int	get_n_sort_columns () const
	Returns the number of columns by which the sorter sorts.
std::pair< Glib::RefPtr< ColumnViewColumn >, SortType >	get_nth_sort_column (unsigned int position)
	Gets the position'th sort column and its associated sort order.
std::pair< Glib::RefPtr< const ColumnViewColumn >, SortType >	get_nth_sort_column (unsigned int position) const
	See the non-const get_nth_sort_column().
Glib::PropertyProxy_ReadOnly< Glib::RefPtr< ColumnViewColumn > >	property_primary_sort_column () const
	The primary sort column.
Glib::PropertyProxy_ReadOnly< SortType >	property_primary_sort_order () const
	The primary sort order.
Public Member Functions inherited from Gtk::Sorter
	Sorter (Sorter &&src) noexcept
Sorter &	operator= (Sorter &&src) noexcept
	~Sorter () noexcept override
GtkSorter *	gobj ()
	Provides access to the underlying C GObject.
const GtkSorter *	gobj () const
	Provides access to the underlying C GObject.
GtkSorter *	gobj_copy ()
	Provides access to the underlying C instance. The caller is responsible for unrefing it. Use when directly setting fields in structs.
Ordering	compare (gpointer item1, gpointer item2)
	Compares two given items according to the sort order implemented by the sorter.
Order	get_order () const
	Gets the order that self conforms to.
void	changed (Change change)
	Notifies all users of the sorter that it has changed.
Glib::SignalProxy< void(Change)>	signal_changed ()

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

Protected Member Functions
	ColumnViewSorter ()
Protected Member Functions inherited from Gtk::Sorter
	Sorter ()
virtual Ordering	compare_vfunc (gpointer item1, gpointer item2)
virtual Order	get_order_vfunc ()

Related Symbols
(Note that these are not member symbols.)
Glib::RefPtr< Gtk::ColumnViewSorter >	wrap (GtkColumnViewSorter *object, bool take_copy=false)
	A Glib::wrap() method for this object.
Related Symbols inherited from Gtk::Sorter
Glib::RefPtr< Gtk::Sorter >	wrap (GtkSorter *object, bool take_copy=false)
	A Glib::wrap() method for this object.

Additional Inherited Members
Public Types inherited from Gtk::Sorter
enum class	Order {   PARTIAL ,   NONE ,   TOTAL }
enum class	Change {   DIFFERENT ,   INVERTED ,   LESS_STRICT ,   MORE_STRICT }

Detailed Description

A sorter implementation that is geared towards the needs of Gtk::ColumnView.

The sorter returned by Gtk::ColumnView::get_sorter() is a Gtk::ColumnViewSorter.

In column views, sorting can be configured by associating sorters with columns, and users can invert sort order by clicking on column headers. The API of Gtk::ColumnViewSorter is designed to allow saving and restoring this configuration.

If you are only interested in the primary sort column (i.e. the column where a sort indicator is shown in the header), then you can just look at property_primary_sort_column() and property_primary_sort_order().

If you want to store the full sort configuration, including secondary sort columns that are used for tie breaking, then you can use get_nth_sort_column(). To get notified about changes, use Gtk::Sorter::signal_changed().

To restore a saved sort configuration on a Gtk::ColumnView, use code like:

auto sorter = column_view->get_sorter();
auto column_view_sorter = std::dynamic_pointer_cast<Gtk::ColumnViewSorter>(sorter);
if (column_view_sorter)
{
  for (unsigned int i = column_view_sorter->get_n_sort_columns(); i > 0; --i)
  {
    auto [column, sort_order] = column_view_sorter->get_nth_sort_column(i-1);
    column_view->sort_by_column(column, sort_order);
  }
}

Since gtkmm 4.10:

Constructor & Destructor Documentation

ColumnViewSorter() [1/2]

Gtk::ColumnViewSorter::ColumnViewSorter ( ColumnViewSorter &&  src )

noexcept

~ColumnViewSorter()

Gtk::ColumnViewSorter::~ColumnViewSorter ( )

overridenoexcept

ColumnViewSorter() [2/2]

Gtk::ColumnViewSorter::ColumnViewSorter ( )

protected

Member Function Documentation

get_n_sort_columns()

unsigned int Gtk::ColumnViewSorter::get_n_sort_columns

(

)

const

Returns the number of columns by which the sorter sorts.

If the sorter of the primary sort column does not determine a total order, then the secondary sorters are consulted to break the ties.

Use the Gtk::Sorter::signal_changed() signal to get notified when the number of sort columns changes.

Since gtkmm 4.10:

Returns

The number of sort columns.

get_nth_sort_column() [1/2]

std::pair< Glib::RefPtr< ColumnViewColumn >, SortType > Gtk::ColumnViewSorter::get_nth_sort_column

(

unsigned int

position

)

Gets the position'th sort column and its associated sort order.

Use the Gtk::Sorter::signal_changed() signal to get notified when sort columns change.

Since gtkmm 4.10:

Parameters

position

The position of the sort column to retrieve (0 for the primary sort column).

Returns

{sort_column, sort_order} The position's sort column and sort order.

get_nth_sort_column() [2/2]

std::pair< Glib::RefPtr< const ColumnViewColumn >, SortType > Gtk::ColumnViewSorter::get_nth_sort_column

(

unsigned int

position

)

const

See the non-const get_nth_sort_column().

get_primary_sort_column() [1/2]

Glib::RefPtr< ColumnViewColumn > Gtk::ColumnViewSorter::get_primary_sort_column

(

)

Returns the primary sort column.

The primary sort column is the one that displays the triangle in a column view header.

Since gtkmm 4.10:

Returns

The primary sort column.

get_primary_sort_column() [2/2]

Glib::RefPtr< const ColumnViewColumn > Gtk::ColumnViewSorter::get_primary_sort_column

(

)

const

Returns the primary sort column.

The primary sort column is the one that displays the triangle in a column view header.

Since gtkmm 4.10:

Returns

The primary sort column.

get_primary_sort_order()

SortType Gtk::ColumnViewSorter::get_primary_sort_order

(

)

const

Returns the primary sort order.

The primary sort order determines whether the triangle displayed in the column view header of the primary sort column points upwards or downwards.

If there is no primary sort column, then this function returns Gtk::SortType::ASCENDING.

Since gtkmm 4.10:

Returns

The primary sort order.

get_type()

static GType Gtk::ColumnViewSorter::get_type ( )

static

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

gobj() [1/2]

GtkColumnViewSorter * Gtk::ColumnViewSorter::gobj ( )

inline

Provides access to the underlying C GObject.

gobj() [2/2]

const GtkColumnViewSorter * Gtk::ColumnViewSorter::gobj ( ) const

inline

Provides access to the underlying C GObject.

gobj_copy()

GtkColumnViewSorter * Gtk::ColumnViewSorter::gobj_copy

(

)

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

operator=()

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

noexcept

property_primary_sort_column()

Glib::PropertyProxy_ReadOnly< Glib::RefPtr< ColumnViewColumn > > Gtk::ColumnViewSorter::property_primary_sort_column

(

)

const

The primary sort column.

The primary sort column is the one that displays the triangle in a column view header.

Since gtkmm 4.10:

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_primary_sort_order()

Glib::PropertyProxy_ReadOnly< SortType > Gtk::ColumnViewSorter::property_primary_sort_order

(

)

const

The primary sort order.

The primary sort order determines whether the triangle displayed in the column view header of the primary sort column points upwards or downwards.

Since gtkmm 4.10:

Default value: Gtk::SortType::ASCENDING

Returns

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

Friends And Related Symbol Documentation

wrap()

Glib::RefPtr< Gtk::ColumnViewSorter > wrap ( GtkColumnViewSorter *  object, bool  take_copy = false  )

related

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.