1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133

use fyrox::{
    core::{algebra::Vector2, pool::ErasedHandle, pool::Handle, visitor::Visitor},
    gui::{
        file_browser::{FileBrowserMode, FileSelectorBuilder, Filter},
        message::MessageDirection,
        widget::{WidgetBuilder, WidgetMessage},
        window::{Window, WindowBuilder},
        BuildContext, UiNode, UserInterface,
    },
};
use std::{fs::File, io::Read, path::Path};

pub mod doc;
pub mod path_fixer;
pub mod ragdoll;

pub fn is_slice_equal_permutation<T: PartialEq>(a: &[T], b: &[T]) -> bool {
    if a.is_empty() && !b.is_empty() {
        false
    } else {
        // TODO: Find a way to do this faster.
        for source in a.iter() {
            let mut found = false;
            for other in b.iter() {
                if other == source {
                    found = true;
                    break;
                }
            }
            if !found {
                return false;
            }
        }
        true
    }
}

pub fn window_content(window: Handle<UiNode>, ui: &UserInterface) -> Handle<UiNode> {
    ui.node(window)
        .cast::<Window>()
        .map(|w| w.content)
        .unwrap_or_default()
}

pub fn enable_widget(handle: Handle<UiNode>, state: bool, ui: &UserInterface) {
    ui.send_message(WidgetMessage::enabled(
        handle,
        MessageDirection::ToWidget,
        state,
    ));
}

pub fn create_file_selector(
    ctx: &mut BuildContext,
    extension: &'static str,
    mode: FileBrowserMode,
) -> Handle<UiNode> {
    FileSelectorBuilder::new(
        WindowBuilder::new(WidgetBuilder::new().with_width(300.0).with_height(400.0)).open(false),
    )
    .with_filter(Filter::new(move |path| {
        if let Some(ext) = path.extension() {
            ext.to_string_lossy().as_ref() == extension
        } else {
            path.is_dir()
        }
    }))
    .with_mode(mode)
    .build(ctx)
}

pub fn fetch_node_center(handle: Handle<UiNode>, ctx: &BuildContext) -> Vector2<f32> {
    ctx.try_get_node(handle)
        .map(|node| node.center())
        .unwrap_or_default()
}

pub fn fetch_node_screen_center(handle: Handle<UiNode>, ctx: &BuildContext) -> Vector2<f32> {
    ctx.try_get_node(handle)
        .map(|node| node.screen_bounds().center())
        .unwrap_or_default()
}

pub fn fetch_node_screen_center_ui(handle: Handle<UiNode>, ui: &UserInterface) -> Vector2<f32> {
    ui.try_get_node(handle)
        .map(|node| node.screen_bounds().center())
        .unwrap_or_default()
}

pub fn make_node_name(name: &str, handle: ErasedHandle) -> String {
    format!("{} ({}:{})", name, handle.index(), handle.generation())
}

pub fn apply_visibility_filter<F>(root: Handle<UiNode>, ui: &UserInterface, filter: F)
where
    F: Fn(&UiNode) -> Option<bool>,
{
    fn apply_filter_recursive<F>(node: Handle<UiNode>, ui: &UserInterface, filter: &F) -> bool
    where
        F: Fn(&UiNode) -> Option<bool>,
    {
        let node_ref = ui.node(node);

        let mut is_any_match = false;
        for &child in node_ref.children() {
            is_any_match |= apply_filter_recursive(child, ui, filter)
        }

        if let Some(has_match) = filter(node_ref) {
            is_any_match |= has_match;

            ui.send_message(WidgetMessage::visibility(
                node,
                MessageDirection::ToWidget,
                is_any_match,
            ));
        }

        is_any_match
    }

    apply_filter_recursive(root, ui, &filter);
}

pub fn is_native_scene(path: &Path) -> bool {
    if let Ok(mut file) = File::open(path) {
        let mut magic: [u8; 4] = Default::default();
        if file.read_exact(&mut magic).is_ok() {
            return magic.eq(Visitor::MAGIC.as_bytes());
        }
    }
    false
}