// Package gtk was automatically generated by github.com/bnema/puregotk DO NOT EDIT
package gtk

import (
	"structs"
	"unsafe"

	"github.com/ebitengine/purego"

	"github.com/bnema/puregotk/pkg/core"
	"github.com/bnema/puregotk/v4/gio"
	"github.com/bnema/puregotk/v4/glib"
	"github.com/bnema/puregotk/v4/gobject"
	"github.com/bnema/puregotk/v4/gobject/types"
)

// User function that is called to map an @item of the original model to
// an item expected by the map model.
//
// The returned items must conform to the item type of the model they are
// used with.
type MapListModelMapFunc func(uintptr, uintptr) uintptr

type MapListModelClass struct {
	_ structs.HostLayout

	ParentClass gobject.ObjectClass
}

func (x *MapListModelClass) GoPointer() uintptr {
	return uintptr(unsafe.Pointer(x))
}

// A list model that maps the items in another model to different items.
//
// `GtkMapListModel` uses a [callback@Gtk.MapListModelMapFunc].
//
// Example: Create a list of `GtkEventControllers`
// ```c
// static gpointer
// map_to_controllers (gpointer widget,
//
//	gpointer data)
//
//	{
//	  gpointer result = gtk_widget_observe_controllers (widget);
//	  g_object_unref (widget);
//	  return result;
//	}
//
// widgets = gtk_widget_observe_children (widget);
//
// controllers = gtk_map_list_model_new (widgets,
//
//	map_to_controllers,
//	NULL, NULL);
//
// model = gtk_flatten_list_model_new (GTK_TYPE_EVENT_CONTROLLER,
//
//	controllers);
//
// ```
//
// `GtkMapListModel` will attempt to discard the mapped objects as soon as
// they are no longer needed and recreate them if necessary.
//
// `GtkMapListModel` passes through sections from the underlying model.
type MapListModel struct {
	gobject.Object
}

var xMapListModelGLibType func() types.GType

func MapListModelGLibType() types.GType {
	return xMapListModelGLibType()
}

func MapListModelNewFromInternalPtr(ptr uintptr) *MapListModel {
	cls := &MapListModel{}
	cls.Ptr = ptr
	return cls
}

var xNewMapListModel func(uintptr, uintptr, uintptr, uintptr) uintptr

// Creates a new `GtkMapListModel` for the given arguments.
func NewMapListModel(ModelVar gio.ListModel, MapFuncVar *MapListModelMapFunc, UserDataVar uintptr, UserDestroyVar *glib.DestroyNotify) *MapListModel {
	var cls *MapListModel

	var MapFuncVarRef uintptr
	if MapFuncVar != nil {
		MapFuncVarPtr := uintptr(unsafe.Pointer(MapFuncVar))
		if cbRefPtr, ok := glib.GetCallback(MapFuncVarPtr); ok {
			MapFuncVarRef = cbRefPtr
		} else {
			fcb := func(arg0 uintptr, arg1 uintptr) uintptr {
				cbFn := *MapFuncVar
				return cbFn(arg0, arg1)
			}
			MapFuncVarRef = purego.NewCallback(fcb)
			glib.SaveCallbackWithClosure(MapFuncVarPtr, MapFuncVarRef, MapFuncVar)
		}
	}

	var UserDestroyVarRef uintptr
	if UserDestroyVar != nil {
		UserDestroyVarPtr := uintptr(unsafe.Pointer(UserDestroyVar))
		if cbRefPtr, ok := glib.GetCallback(UserDestroyVarPtr); ok {
			UserDestroyVarRef = cbRefPtr
		} else {
			fcb := func(arg0 uintptr) {
				cbFn := *UserDestroyVar
				cbFn(arg0)
			}
			UserDestroyVarRef = purego.NewCallback(fcb)
			glib.SaveCallbackWithClosure(UserDestroyVarPtr, UserDestroyVarRef, UserDestroyVar)
		}
	}

	cret := xNewMapListModel(ModelVar.GoPointer(), MapFuncVarRef, UserDataVar, UserDestroyVarRef)

	if cret == 0 {
		return nil
	}
	cls = &MapListModel{}
	cls.Ptr = cret
	return cls
}

var xMapListModelGetModel func(uintptr) uintptr

// Gets the model that is currently being mapped or %NULL if none.
func (x *MapListModel) GetModel() *gio.ListModelBase {
	var cls *gio.ListModelBase

	cret := xMapListModelGetModel(x.GoPointer())

	if cret == 0 {
		return nil
	}
	gobject.IncreaseRef(cret)
	cls = &gio.ListModelBase{}
	cls.Ptr = cret
	return cls
}

var xMapListModelHasMap func(uintptr) bool

// Checks if a map function is currently set on @self.
func (x *MapListModel) HasMap() bool {

	cret := xMapListModelHasMap(x.GoPointer())
	return cret
}

var xMapListModelSetMapFunc func(uintptr, uintptr, uintptr, uintptr)

// Sets the function used to map items.
//
// The function will be called whenever an item needs to be mapped
// and must return the item to use for the given input item.
//
// Note that `GtkMapListModel` may call this function multiple times
// on the same item, because it may delete items it doesn't need anymore.
//
// GTK makes no effort to ensure that @map_func conforms to the item type
// of @self. It assumes that the caller knows what they are doing and the map
// function returns items of the appropriate type.
func (x *MapListModel) SetMapFunc(MapFuncVar *MapListModelMapFunc, UserDataVar uintptr, UserDestroyVar *glib.DestroyNotify) {

	var MapFuncVarRef uintptr
	if MapFuncVar != nil {
		MapFuncVarPtr := uintptr(unsafe.Pointer(MapFuncVar))
		if cbRefPtr, ok := glib.GetCallback(MapFuncVarPtr); ok {
			MapFuncVarRef = cbRefPtr
		} else {
			fcb := func(arg0 uintptr, arg1 uintptr) uintptr {
				cbFn := *MapFuncVar
				return cbFn(arg0, arg1)
			}
			MapFuncVarRef = purego.NewCallback(fcb)
			glib.SaveCallbackWithClosure(MapFuncVarPtr, MapFuncVarRef, MapFuncVar)
		}
	}

	var UserDestroyVarRef uintptr
	if UserDestroyVar != nil {
		UserDestroyVarPtr := uintptr(unsafe.Pointer(UserDestroyVar))
		if cbRefPtr, ok := glib.GetCallback(UserDestroyVarPtr); ok {
			UserDestroyVarRef = cbRefPtr
		} else {
			fcb := func(arg0 uintptr) {
				cbFn := *UserDestroyVar
				cbFn(arg0)
			}
			UserDestroyVarRef = purego.NewCallback(fcb)
			glib.SaveCallbackWithClosure(UserDestroyVarPtr, UserDestroyVarRef, UserDestroyVar)
		}
	}

	xMapListModelSetMapFunc(x.GoPointer(), MapFuncVarRef, UserDataVar, UserDestroyVarRef)

}

var xMapListModelSetModel func(uintptr, uintptr)

// Sets the model to be mapped.
//
// GTK makes no effort to ensure that @model conforms to the item type
// expected by the map function. It assumes that the caller knows what
// they are doing and have set up an appropriate map function.
func (x *MapListModel) SetModel(ModelVar gio.ListModel) {

	xMapListModelSetModel(x.GoPointer(), ModelVar.GoPointer())

}

func (c *MapListModel) GoPointer() uintptr {
	if c == nil {
		return 0
	}
	return c.Ptr
}

func (c *MapListModel) SetGoPointer(ptr uintptr) {
	c.Ptr = ptr
}

// GetPropertyHasMap gets the "has-map" property.
// If a map is set for this model
func (x *MapListModel) GetPropertyHasMap() bool {
	var v gobject.Value
	x.GetProperty("has-map", &v)
	return v.GetBoolean()
}

// GetPropertyNItems gets the "n-items" property.
// The number of items. See [method@Gio.ListModel.get_n_items].
func (x *MapListModel) GetPropertyNItems() uint {
	var v gobject.Value
	x.GetProperty("n-items", &v)
	return v.GetUint()
}

// Get the item at @position.
//
// If @position is greater than the number of items in @list, %NULL is
// returned.
//
// %NULL is never returned for an index that is smaller than the length
// of the list.
//
// See also: g_list_model_get_n_items()
func (x *MapListModel) GetItem(PositionVar uint) uintptr {

	cret := gio.XGListModelGetItem(x.GoPointer(), PositionVar)
	return cret
}

// Gets the type of the items in @list.
//
// All items returned from g_list_model_get_item() are of the type
// returned by this function, or a subtype, or if the type is an
// interface, they are an implementation of that interface.
//
// The item type of a #GListModel can not change during the life of the
// model.
func (x *MapListModel) GetItemType() types.GType {

	cret := gio.XGListModelGetItemType(x.GoPointer())
	return cret
}

// Gets the number of items in @list.
//
// Depending on the model implementation, calling this function may be
// less efficient than iterating the list with increasing values for
// @position until g_list_model_get_item() returns %NULL.
func (x *MapListModel) GetNItems() uint {

	cret := gio.XGListModelGetNItems(x.GoPointer())
	return cret
}

// Get the item at @position.
//
// If @position is greater than the number of items in @list, %NULL is
// returned.
//
// %NULL is never returned for an index that is smaller than the length
// of the list.
//
// This function is meant to be used by language bindings in place
// of g_list_model_get_item().
//
// See also: g_list_model_get_n_items()
func (x *MapListModel) GetObject(PositionVar uint) *gobject.Object {
	var cls *gobject.Object

	cret := gio.XGListModelGetObject(x.GoPointer(), PositionVar)

	if cret == 0 {
		return nil
	}
	cls = &gobject.Object{}
	cls.Ptr = cret
	return cls
}

// Emits the #GListModel::items-changed signal on @list.
//
// This function should only be called by classes implementing
// #GListModel. It has to be called after the internal representation
// of @list has been updated, because handlers connected to this signal
// might query the new state of the list.
//
// Implementations must only make changes to the model (as visible to
// its consumer) in places that will not cause problems for that
// consumer.  For models that are driven directly by a write API (such
// as #GListStore), changes can be reported in response to uses of that
// API.  For models that represent remote data, changes should only be
// made from a fresh mainloop dispatch.  It is particularly not
// permitted to make changes in response to a call to the #GListModel
// consumer API.
//
// Stated another way: in general, it is assumed that code making a
// series of accesses to the model via the API, without returning to the
// mainloop, and without calling other code, will continue to view the
// same contents of the model.
func (x *MapListModel) ItemsChanged(PositionVar uint, RemovedVar uint, AddedVar uint) {

	gio.XGListModelItemsChanged(x.GoPointer(), PositionVar, RemovedVar, AddedVar)

}

// Query the section that covers the given position. The number of
// items in the section can be computed by `out_end - out_start`.
//
// If the position is larger than the number of items, a single
// range from n_items to G_MAXUINT will be returned.
func (x *MapListModel) GetSection(PositionVar uint, OutStartVar *uint, OutEndVar *uint) {

	XGtkSectionModelGetSection(x.GoPointer(), PositionVar, OutStartVar, OutEndVar)

}

// This function emits the [signal@Gtk.SectionModel::sections-changed]
// signal to notify about changes to sections.
//
// It must cover all positions that used to be a section start or that
// are now a section start. It does not have to cover all positions for
// which the section has changed.
//
// The [signal@Gio.ListModel::items-changed] implies the effect of the
// [signal@Gtk.SectionModel::sections-changed] signal for all the items
// it covers.
//
// It is recommended that when changes to the items cause section changes
// in a larger range, that the larger range is included in the emission
// of the [signal@Gio.ListModel::items-changed] instead of emitting
// two signals.
func (x *MapListModel) SectionsChanged(PositionVar uint, NItemsVar uint) {

	XGtkSectionModelSectionsChanged(x.GoPointer(), PositionVar, NItemsVar)

}

func init() {
	core.SetPackageName("GTK", "gtk4")
	core.SetSharedLibraries("GTK", []string{"libgtk-4.so.1"})
	var libs []uintptr
	for _, libPath := range core.GetPaths("GTK") {
		lib, err := purego.Dlopen(libPath, purego.RTLD_NOW|purego.RTLD_GLOBAL)
		if err != nil {
			panic(err)
		}
		libs = append(libs, lib)
	}

	core.PuregoSafeRegister(&xMapListModelGLibType, libs, "gtk_map_list_model_get_type")

	core.PuregoSafeRegister(&xNewMapListModel, libs, "gtk_map_list_model_new")

	core.PuregoSafeRegister(&xMapListModelGetModel, libs, "gtk_map_list_model_get_model")
	core.PuregoSafeRegister(&xMapListModelHasMap, libs, "gtk_map_list_model_has_map")
	core.PuregoSafeRegister(&xMapListModelSetMapFunc, libs, "gtk_map_list_model_set_map_func")
	core.PuregoSafeRegister(&xMapListModelSetModel, libs, "gtk_map_list_model_set_model")

}