//go:build linux

package application

/*
#cgo linux pkg-config: gtk+-3.0

#include <stdio.h>
#include "gtk/gtk.h"

typedef struct CallbackID
{
    unsigned int value;
} CallbackID;

extern void dispatchOnMainThreadCallback(unsigned int);

static gboolean dispatchCallback(gpointer data) {
    struct CallbackID *args = data;
    unsigned int cid = args->value;
    dispatchOnMainThreadCallback(cid);
    free(args);

    return G_SOURCE_REMOVE;
};

static void dispatchOnMainThread(unsigned int id) {
    CallbackID *args = malloc(sizeof(CallbackID));
    args->value = id;
    g_idle_add((GSourceFunc)dispatchCallback, (gpointer)args);
}

*/
import "C"

func (m *linuxApp) dispatchOnMainThread(id uint) {
	C.dispatchOnMainThread(C.uint(id))
}

//export dispatchOnMainThreadCallback
func dispatchOnMainThreadCallback(callbackID C.uint) {
	mainThreadFunctionStoreLock.RLock()
	id := uint(callbackID)
	fn := mainThreadFunctionStore[id]
	if fn == nil {
		Fatal("dispatchCallback called with invalid id: %v", id)
	}
	delete(mainThreadFunctionStore, id)
	mainThreadFunctionStoreLock.RUnlock()
	fn()
}