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
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162

use std::time::Duration;

use leptos::{
    ev::{click, focus, keydown},
    *,
};
use leptos_use::{on_click_outside, use_event_listener};

use crate::{
    cn,
    custom_animated_show::CustomAnimatedShow,
    items::{Focus, ManageFocus, NavigateItems, Toggle},
};

use super::context::{MenuContext, RootContext};

#[component]
pub fn Menu(
    #[prop(default = false)] disabled: bool,
    #[prop(into, optional)] class: String,
    children: Children,
) -> impl IntoView {
    let ctx = expect_context::<RootContext>();

    let index = ctx.next_index();

    let menu_ctx = MenuContext {
        index,
        disabled,
        allow_loop: ctx.allow_item_loop,
        ..Default::default()
    };

    ctx.upsert_item(index, menu_ctx);

    on_cleanup(move || {
        ctx.remove_item(index);
    });

    let menu_ref = menu_ctx.menu_ref;

    view! {
        <Provider value={menu_ctx}>
            <div node_ref={menu_ref} class={class} data-index={index}>
                {children()}
            </div>
        </Provider>
    }
}

#[component]
pub fn MenuTrigger(#[prop(into, optional)] class: String, children: Children) -> impl IntoView {
    let root_ctx = expect_context::<RootContext>();
    let menu_ctx = expect_context::<MenuContext>();

    let trigger_ref = menu_ctx.trigger_ref;

    view! {
        <MenuTriggerEvents>
            <div
                node_ref={trigger_ref}
                class={class}
                data-state={menu_ctx.index}
                data-disabled={menu_ctx.disabled}
                data-highlighted={move || root_ctx.item_in_focus(menu_ctx.index)}
                tabindex=0
            >
                {children()}
            </div>
        </MenuTriggerEvents>
    }
}

#[component]
pub fn MenuTriggerEvents(children: Children) -> impl IntoView {
    let root_ctx = expect_context::<RootContext>();
    let menu_ctx = expect_context::<MenuContext>();

    create_effect(move |_| {
        if menu_ctx.open.get() == false {
            menu_ctx.set_focus(None);
        }
    });

    let _ = use_event_listener(menu_ctx.trigger_ref, click, move |_| {
        menu_ctx.toggle();
    });

    let _ = use_event_listener(menu_ctx.trigger_ref, keydown, move |evt| {
        let key = evt.key();

        if key == "ArrowRight" {
            if let Some(item) = root_ctx.navigate_next_item() {
                if menu_ctx.open.get() {
                    item.open();
                }
                item.focus();
                menu_ctx.close();
            }
        } else if key == "ArrowLeft" {
            if let Some(item) = root_ctx.navigate_previous_item() {
                if menu_ctx.open.get() {
                    item.open();
                }
                item.focus();
                menu_ctx.close();
            }
        } else if key == "ArrowDown" || key == "Enter" {
            if !menu_ctx.open.get() {
                menu_ctx.open();
            }
            if let Some(item) = menu_ctx.navigate_first_item() {
                item.focus();
            }
        } else if key == "Escape" {
            root_ctx.close_all();
        }
    });

    let _ = use_event_listener(menu_ctx.trigger_ref, focus, move |_| {
        root_ctx.set_focus(Some(menu_ctx.index));
    });

    let _ = on_click_outside(menu_ctx.menu_ref, move |_| {
        if menu_ctx.open.get() {
            menu_ctx.close();
        }
    });

    children()
}

#[component]
pub fn MenuContent(
    children: ChildrenFn,
    /// Optional CSS class to apply to both show and hide classes
    #[prop(into, optional)]
    class: String,
    /// Optional CSS class to apply if `when == true`
    #[prop(into, optional)]
    show_class: String,
    /// Optional CSS class to apply if `when == false`
    #[prop(into, optional)]
    hide_class: String,
    /// The timeout after which the component will be unmounted if `when == false`
    #[prop(default = Duration::from_millis(200))]
    hide_delay: Duration,
) -> impl IntoView {
    let menu_ctx = expect_context::<MenuContext>();

    let children = store_value(children);
    view! {
        <CustomAnimatedShow
            when={menu_ctx.open}
            show_class={cn!(class, show_class)}
            hide_class={cn!(class, hide_class)}
            hide_delay={hide_delay}
        >
            {children()}
        </CustomAnimatedShow>
    }
}