class Gtk::SliceListModel

Overview

GtkSliceListModel is a list model that presents a slice of another model.

This is useful when implementing paging by setting the size to the number of elements per page and updating the offset whenever a different page is opened.

Included Modules

Defined in:

lib/gi-crystal/src/auto/gtk-4.0/slice_list_model.cr

Constructors

Class Method Summary

Instance Method Summary

Instance methods inherited from module Gio::ListModel

item(position : UInt32) : GObject::Object? item, item_type : UInt64 item_type, items_changed(position : UInt32, removed : UInt32, added : UInt32) : Nil items_changed, items_changed_signal items_changed_signal, n_items : UInt32 n_items, to_unsafe to_unsafe

Class methods inherited from module Gio::ListModel

g_type : UInt64 g_type

Instance methods inherited from class GObject::Object

bind_property(source_property : String, target : GObject::Object, target_property : String, flags : GObject::BindingFlags) : GObject::Binding bind_property, bind_property_full(source_property : String, target : GObject::Object, target_property : String, flags : GObject::BindingFlags, transform_to : GObject::Closure, transform_from : GObject::Closure) : GObject::Binding bind_property_full, data(key : String) : Pointer(Void)? data, finalize finalize, freeze_notify : Nil freeze_notify, getv(names : Enumerable(String), values : Enumerable(_)) : Nil getv, notify(property_name : String) : Nil notify, notify_by_pspec(pspec : GObject::ParamSpec) : Nil notify_by_pspec, notify_signal notify_signal, property(property_name : String, value : _) : Nil property, qdata(quark : UInt32) : Pointer(Void)? qdata, ref_count : UInt32 ref_count, run_dispose : Nil run_dispose, set_data(key : String, data : Pointer(Void)?) : Nil set_data, set_property(property_name : String, value : _) : Nil set_property, steal_data(key : String) : Pointer(Void)? steal_data, steal_qdata(quark : UInt32) : Pointer(Void)? steal_qdata, thaw_notify : Nil thaw_notify, to_unsafe : Pointer(Void) to_unsafe, watch_closure(closure : GObject::Closure) : Nil watch_closure

Constructor methods inherited from class GObject::Object

cast(obj : GObject::Object) : self cast, cast?(obj : GObject::Object) : self? cast?, new(pointer : Pointer(Void), transfer : GICrystal::Transfer)
new
new
, newv(object_type : UInt64, parameters : Enumerable(GObject::Parameter)) : self newv

Class methods inherited from class GObject::Object

compat_control(what : UInt64, data : Pointer(Void)?) : UInt64 compat_control, g_type : UInt64 g_type, interface_find_property(g_iface : GObject::TypeInterface, property_name : String) : GObject::ParamSpec interface_find_property, interface_list_properties(g_iface : GObject::TypeInterface) : Enumerable(GObject::ParamSpec) interface_list_properties

Constructor Detail

def self.new(model : Gio::ListModel?, offset : UInt32, size : UInt32) : self #

Creates a new slice model.

It presents the slice from @offset to offset + @size of the given @model.


def self.new #

Initialize a new SliceListModel.


def self.new(*, model : Gio::ListModel? = nil, offset : UInt32? = nil, size : UInt32? = nil) #

Class Method Detail

def self.g_type : UInt64 #

Returns the type id (GType) registered in GLib type system.


Instance Method Detail

def model : Gio::ListModel? #

Gets the model that is currently being used or %NULL if none.


def model=(model : Gio::ListModel?) : Nil #

Sets the model to show a slice of.

The model's item type must conform to @self's item type.


def offset : UInt32 #

Gets the offset set via gtk_slice_list_model_set_offset().


def offset=(offset : UInt32) : Nil #

Sets the offset into the original model for this slice.

If the offset is too large for the sliced model, @self will end up empty.


def size : UInt32 #

Gets the size set via gtk_slice_list_model_set_size().


def size=(size : UInt32) : Nil #

Sets the maximum size. @self will never have more items than @size.

It can however have fewer items if the offset is too large or the model sliced from doesn't have enough items.