use crate::{
props::Props,
widget::{
component::{WidgetComponent, WidgetComponentPrefab},
unit::{WidgetUnitNode, WidgetUnitNodePrefab},
},
Prefab,
};
use serde::{Deserialize, Serialize};
use std::mem::MaybeUninit;
#[allow(clippy::large_enum_variant)]
#[derive(Debug, Clone)]
pub enum WidgetNode {
None,
Component(WidgetComponent),
Unit(WidgetUnitNode),
Tuple(Vec<WidgetNode>),
}
impl WidgetNode {
pub fn is_none(&self) -> bool {
match self {
Self::None => true,
Self::Unit(unit) => unit.is_none(),
Self::Tuple(v) => v.is_empty(),
_ => false,
}
}
pub fn is_some(&self) -> bool {
match self {
Self::None => false,
Self::Unit(unit) => unit.is_some(),
Self::Tuple(v) => !v.is_empty(),
_ => true,
}
}
pub fn as_component(&self) -> Option<&WidgetComponent> {
match self {
Self::Component(c) => Some(c),
_ => None,
}
}
pub fn as_unit(&self) -> Option<&WidgetUnitNode> {
match self {
Self::Unit(u) => Some(u),
_ => None,
}
}
pub fn as_tuple(&self) -> Option<&[WidgetNode]> {
match self {
Self::Tuple(v) => Some(v),
_ => None,
}
}
pub fn props(&self) -> Option<&Props> {
match self {
Self::Component(c) => Some(&c.props),
Self::Unit(u) => u.props(),
_ => None,
}
}
pub fn props_mut(&mut self) -> Option<&mut Props> {
match self {
Self::Component(c) => Some(&mut c.props),
Self::Unit(u) => u.props_mut(),
_ => None,
}
}
pub fn remap_props<F>(&mut self, f: F)
where
F: FnMut(Props) -> Props,
{
match self {
Self::Component(c) => c.remap_props(f),
Self::Unit(u) => u.remap_props(f),
_ => {}
}
}
pub fn shared_props(&self) -> Option<&Props> {
match self {
Self::Component(c) => c.shared_props.as_ref(),
_ => None,
}
}
pub fn shared_props_mut(&mut self) -> Option<&mut Props> {
match self {
Self::Component(c) => {
if c.shared_props.is_none() {
c.shared_props = Some(Default::default());
}
c.shared_props.as_mut()
}
_ => None,
}
}
pub fn remap_shared_props<F>(&mut self, f: F)
where
F: FnMut(Props) -> Props,
{
if let Self::Component(c) = self {
c.remap_shared_props(f);
}
}
pub fn pack_tuple<const N: usize>(data: [WidgetNode; N]) -> Self {
Self::Tuple(data.into())
}
pub fn unpack_tuple<const N: usize>(self) -> [WidgetNode; N] {
let mut data: [MaybeUninit<WidgetNode>; N] = unsafe { MaybeUninit::uninit().assume_init() };
for item in data.iter_mut().take(N) {
*item = MaybeUninit::new(WidgetNode::None);
}
if let WidgetNode::Tuple(mut v) = self {
for i in (0..(v.len().min(N))).rev() {
data[i] = MaybeUninit::new(v.swap_remove(i));
}
}
let ptr = &data as *const _ as *const [WidgetNode; N];
let res = unsafe { ptr.read() };
std::mem::forget(data);
res
}
}
impl Default for WidgetNode {
fn default() -> Self {
Self::None
}
}
impl From<()> for WidgetNode {
fn from(_: ()) -> Self {
Self::None
}
}
impl From<()> for Box<WidgetNode> {
fn from(_: ()) -> Self {
Box::new(WidgetNode::None)
}
}
impl From<WidgetComponent> for WidgetNode {
fn from(component: WidgetComponent) -> Self {
Self::Component(component)
}
}
impl From<WidgetUnitNode> for WidgetNode {
fn from(unit: WidgetUnitNode) -> Self {
Self::Unit(unit)
}
}
impl From<WidgetUnitNode> for Box<WidgetNode> {
fn from(unit: WidgetUnitNode) -> Self {
Box::new(WidgetNode::Unit(unit))
}
}
impl<const N: usize> From<[WidgetNode; N]> for WidgetNode {
fn from(data: [WidgetNode; N]) -> Self {
Self::pack_tuple(data)
}
}
#[derive(Debug, Clone, Serialize, Deserialize)]
pub(crate) enum WidgetNodePrefab {
None,
Component(WidgetComponentPrefab),
Unit(WidgetUnitNodePrefab),
Tuple(Vec<WidgetNodePrefab>),
}
impl Default for WidgetNodePrefab {
fn default() -> Self {
Self::None
}
}
impl Prefab for WidgetNodePrefab {}