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

import (
	"unsafe"

	"github.com/ebitengine/purego"

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

var xSetAllowedBackends func(string)

// Sets a list of backends that GDK should try to use.
//
// This can be useful if your application does not
// work with certain GDK backends.
//
// By default, GDK tries all included backends.
//
// For example:
//
// ```c
// gdk_set_allowed_backends ("wayland,macos,*");
// ```
//
// instructs GDK to try the Wayland backend first, followed by the
// MacOs backend, and then all others.
//
// If the `GDK_BACKEND` environment variable is set, it determines
// what backends are tried in what order, while still respecting the
// set of allowed backends that are specified by this function.
//
// The possible backend names are:
//
//   - `broadway`
//   - `macos`
//   - `wayland`.
//   - `win32`
//   - `x11`
//
// You can also include a `*` in the list to try all remaining backends.
//
// This call must happen prior to functions that open a display, such
// as [func@Gdk.Display.open], `gtk_init()`, or `gtk_init_check()`
// in order to take effect.
func SetAllowedBackends(BackendsVar string) {

	xSetAllowedBackends(BackendsVar)

}

// Offers notification when displays appear or disappear.
//
// `GdkDisplayManager` is a singleton object.
//
// You can use [func@Gdk.DisplayManager.get] to obtain the `GdkDisplayManager`
// singleton, but that should be rarely necessary. Typically, initializing
// GTK opens a display that you can work with without ever accessing the
// `GdkDisplayManager`.
//
// The GDK library can be built with support for multiple backends.
// The `GdkDisplayManager` object determines which backend is used
// at runtime.
//
// In the rare case that you need to influence which of the backends
// is being used, you can use [func@Gdk.set_allowed_backends]. Note
// that you need to call this function before initializing GTK.
//
// ## Backend-specific code
//
// When writing backend-specific code that is supposed to work with
// multiple GDK backends, you have to consider both compile time and
// runtime. At compile time, use the `GDK_WINDOWING_X11`, `GDK_WINDOWING_WIN32`
// macros, etc. to find out which backends are present in the GDK library
// you are building your application against. At runtime, use type-check
// macros like GDK_IS_X11_DISPLAY() to find out which backend is in use:
//
// ```c
// #ifdef GDK_WINDOWING_X11
//
//	if (GDK_IS_X11_DISPLAY (display))
//	  {
//	    // make X11-specific calls here
//	  }
//	else
//
// #endif
// #ifdef GDK_WINDOWING_MACOS
//
//	if (GDK_IS_MACOS_DISPLAY (display))
//	  {
//	    // make Quartz-specific calls here
//	  }
//	else
//
// #endif
//
//	g_error ("Unsupported GDK backend");
//
// ```
type DisplayManager struct {
	gobject.Object
}

var xDisplayManagerGLibType func() types.GType

func DisplayManagerGLibType() types.GType {
	return xDisplayManagerGLibType()
}

func DisplayManagerNewFromInternalPtr(ptr uintptr) *DisplayManager {
	cls := &DisplayManager{}
	cls.Ptr = ptr
	return cls
}

var xDisplayManagerGetDefaultDisplay func(uintptr) uintptr

// Gets the default `GdkDisplay`.
func (x *DisplayManager) GetDefaultDisplay() *Display {
	var cls *Display

	cret := xDisplayManagerGetDefaultDisplay(x.GoPointer())

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

var xDisplayManagerListDisplays func(uintptr) *glib.SList

// List all currently open displays.
func (x *DisplayManager) ListDisplays() *glib.SList {

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

var xDisplayManagerOpenDisplay func(uintptr, uintptr) uintptr

// Opens a display.
func (x *DisplayManager) OpenDisplay(NameVar *string) *Display {
	var cls *Display

	NameVarPtr := core.GStrdupNullable(NameVar)
	defer core.GFreeNullable(NameVarPtr)

	cret := xDisplayManagerOpenDisplay(x.GoPointer(), NameVarPtr)

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

var xDisplayManagerSetDefaultDisplay func(uintptr, uintptr)

// Sets @display as the default display.
func (x *DisplayManager) SetDefaultDisplay(DisplayVar *Display) {

	xDisplayManagerSetDefaultDisplay(x.GoPointer(), DisplayVar.GoPointer())

}

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

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

// Emitted when a display is opened.
func (x *DisplayManager) ConnectDisplayOpened(cb *func(DisplayManager, uintptr)) uint {
	cbPtr := uintptr(unsafe.Pointer(cb))
	if cbRefPtr, ok := glib.GetCallback(cbPtr); ok {
		handlerID := gobject.SignalConnect(x.GoPointer(), "display-opened", cbRefPtr)
		glib.SaveHandlerMapping(handlerID, cbPtr)
		return handlerID
	}

	fcb := func(clsPtr uintptr, DisplayVarp uintptr) {
		fa := DisplayManager{}
		fa.Ptr = clsPtr
		cbFn := *cb

		cbFn(fa, DisplayVarp)

	}
	cbRefPtr := purego.NewCallback(fcb)
	glib.SaveCallbackWithClosure(cbPtr, cbRefPtr, cb)
	handlerID := gobject.SignalConnect(x.GoPointer(), "display-opened", cbRefPtr)
	glib.SaveHandlerMapping(handlerID, cbPtr)
	return handlerID
}

var xDisplayManagerGet func() uintptr

// Gets the singleton `GdkDisplayManager` object.
//
// When called for the first time, this function consults the
// `GDK_BACKEND` environment variable to find out which of the
// supported GDK backends to use (in case GDK has been compiled
// with multiple backends).
//
// Applications can use [func@set_allowed_backends] to limit what
// backends will be used.
func DisplayManagerGet() *DisplayManager {
	var cls *DisplayManager

	cret := xDisplayManagerGet()

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

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

	core.PuregoSafeRegister(&xSetAllowedBackends, libs, "gdk_set_allowed_backends")

	core.PuregoSafeRegister(&xDisplayManagerGLibType, libs, "gdk_display_manager_get_type")

	core.PuregoSafeRegister(&xDisplayManagerGetDefaultDisplay, libs, "gdk_display_manager_get_default_display")
	core.PuregoSafeRegister(&xDisplayManagerListDisplays, libs, "gdk_display_manager_list_displays")
	core.PuregoSafeRegister(&xDisplayManagerOpenDisplay, libs, "gdk_display_manager_open_display")
	core.PuregoSafeRegister(&xDisplayManagerSetDefaultDisplay, libs, "gdk_display_manager_set_default_display")

	core.PuregoSafeRegister(&xDisplayManagerGet, libs, "gdk_display_manager_get")

}