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use crate::storage::{
asset::{Asset, AssetTrait},
asset_id::AssetId,
collections::Collections,
};
use egui::{Button, Label, Pos2, Rect, UiKind, Vec2};
use egui_ltreeview::{NodeBuilder, TreeViewBuilder};
use std::{collections::BTreeMap, sync::Arc};
mod ui_methods;
pub const TREE_WIDTH: f32 = 300.0;
#[derive(Debug, Clone, PartialEq, Eq)]
pub enum TreeEntry<T: AssetTrait> {
Dir(Vec<String>, BTreeMap<String, TreeEntry<T>>),
Asset(Arc<Asset<T>>),
}
impl<T: AssetTrait> Default for TreeEntry<T> {
fn default() -> Self {
TreeEntry::Dir(vec![], BTreeMap::new())
}
}
impl<T: AssetTrait> TreeEntry<T> {
pub fn build(
&self,
empty_dirs: &mut Vec<Vec<String>>,
tree_ids: &mut Vec<TreeId<T>>,
builder: &mut Option<&mut TreeViewBuilder<usize>>,
only_asset_selection: bool,
collections: &mut Collections,
) {
match self {
TreeEntry::Dir(dir, children) => {
tree_ids.push(TreeId::Dir(dir.to_owned()));
if let Some(builder) = builder {
builder.node(
NodeBuilder::dir(tree_ids.len() - 1)
.icon(|ui| {
if !only_asset_selection {
ui.menu_button("+", |ui| {
let new_dir_name = {
let mut name = dir.clone();
name.push("New Folder".to_string());
name
};
if ui
.add_enabled(
!empty_dirs.contains(&new_dir_name)
&& !children.values().any(|child| {
let TreeEntry::Dir(dir, ..) = child else {
return false;
};
dir == &new_dir_name
}),
Button::new("Folder"),
)
.clicked()
{
empty_dirs.push(new_dir_name);
ui.close_kind(UiKind::Menu);
}
let new_asset_name = {
let mut name = dir.clone();
name.push(format!("New {}", T::NAME));
name
};
if ui
.add_enabled(
!children.values().any(|child| {
let TreeEntry::Asset(asset) = child else {
return false;
};
asset.path == new_asset_name
}),
Button::new(T::NAME),
)
.clicked()
{
let mut asset = Asset::<T>::new(new_asset_name);
asset.change_dir(dir);
asset.save(collections);
ui.close_kind(UiKind::Menu);
}
});
}
})
.label(dir.last().cloned().unwrap_or_default()),
);
}
for entry in children
.values()
.filter(|entry| !matches!(entry, TreeEntry::Dir(..)))
{
entry.build(
empty_dirs,
tree_ids,
builder,
only_asset_selection,
collections,
);
}
for entry in children
.values()
.filter(|entry| !matches!(entry, TreeEntry::Asset(..)))
{
entry.build(
empty_dirs,
tree_ids,
builder,
only_asset_selection,
collections,
);
}
if let Some(builder) = builder {
builder.close_dir();
}
}
TreeEntry::Asset(asset) => {
tree_ids.push(TreeId::File(asset.id));
if let Some(builder) = builder {
builder.node(NodeBuilder::leaf(tree_ids.len() - 1).label_ui(|ui| {
ui.add(Label::new(asset.name()).selectable(false).truncate());
let min = Pos2::new(
ui.next_widget_position().x + ui.available_width() - 150.0,
ui.next_widget_position().y - 8.0,
);
let max =
ui.next_widget_position() + Vec2::new(ui.available_width() - 4.0, 8.0);
let rect = Rect::from_min_max(min, max);
asset.data.show(ui, rect);
}));
}
}
}
}
}
#[derive(Debug, PartialEq)]
pub enum TreeId<T: AssetTrait + PartialEq> {
Dir(Vec<String>),
File(AssetId<T>),
}
#[derive(Debug, Default, Clone, PartialEq, Eq)]
#[allow(clippy::large_enum_variant)]
pub enum TreeSelection<T: AssetTrait> {
#[default]
None,
Asset(Asset<T>),
Dir {
current: Vec<String>,
new: Vec<String>,
},
}
pub struct AssetTree<T: AssetTrait> {
pub only_asset_selection: bool,
pub folder_dirty: bool,
pub empty_dirs: Vec<Vec<String>>,
pub selection: TreeSelection<T>,
}
impl<T: AssetTrait> Default for AssetTree<T> {
fn default() -> Self {
Self {
only_asset_selection: false,
folder_dirty: false,
empty_dirs: Default::default(),
selection: Default::default(),
}
}
}
impl<T: AssetTrait> AssetTree<T> {
pub fn load(&self, collections: &Collections) -> Vec<TreeEntry<T>> {
let mut root = TreeEntry::default();
let assets = Asset::all(collections);
for asset in assets {
let pos = Self::add_dir(&mut root, asset.dir());
if let TreeEntry::Dir(_, dir) = pos {
dir.entry(asset.path.last().cloned().unwrap_or_default())
.or_insert_with(|| TreeEntry::Asset(asset));
} else {
unreachable!();
}
}
for dir in self.empty_dirs.clone().into_iter() {
Self::add_dir(&mut root, dir);
}
let TreeEntry::Dir(_, dir) = root else {
unreachable!();
};
dir.into_values().collect()
}
fn add_dir(root: &mut TreeEntry<T>, dir: Vec<String>) -> &mut TreeEntry<T> {
let mut pos = root;
for (i, name) in dir.clone().into_iter().enumerate() {
if let TreeEntry::Dir(_, children) = pos {
pos = children.entry(name).or_insert_with(|| {
TreeEntry::Dir(dir.iter().take(i + 1).cloned().collect(), BTreeMap::new())
});
} else {
unreachable!();
}
}
pos
}
}