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
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203

use std::borrow::Cow;
use std::rc::Rc;
use std::sync::Arc;

use crate::html::{ChildrenRenderer, IntoPropValue};
use crate::virtual_dom::{VChild, VList, VNode, VText};
use crate::{AttrValue, BaseComponent, Html};

/// A trait implemented for types be rendered as a part of a Html.
///
/// Types that implements this trait can define a virtual dom layout that itself should be rendered
/// into via `html!` and can be referenced / consumed as `{value}` in an `html!` macro invocation.
pub trait ToHtml {
    /// Converts this type to a [`Html`].
    fn to_html(&self) -> Html;

    /// Converts this type into a [`Html`].
    fn into_html(self) -> Html
    where
        Self: Sized,
    {
        self.to_html()
    }
}

// Implementations for common data types.

impl<T> ToHtml for Option<T>
where
    T: ToHtml,
{
    #[inline(always)]
    fn to_html(&self) -> Html {
        self.as_ref().map(ToHtml::to_html).unwrap_or_default()
    }

    #[inline(always)]
    fn into_html(self) -> Html {
        self.map(ToHtml::into_html).unwrap_or_default()
    }
}

impl<T> ToHtml for Vec<T>
where
    T: ToHtml,
{
    #[inline(always)]
    fn to_html(&self) -> Html {
        Html::VList(VList::with_children(
            self.iter().map(ToHtml::to_html).collect(),
            None,
        ))
    }

    #[inline(always)]
    fn into_html(self) -> Html {
        Html::VList(VList::with_children(
            self.into_iter().map(ToHtml::into_html).collect(),
            None,
        ))
    }
}

impl ToHtml for Option<VNode> {
    #[inline(always)]
    fn to_html(&self) -> Html {
        self.clone().into_html()
    }

    #[inline(always)]
    fn into_html(self) -> Html {
        self.unwrap_or_default()
    }
}

impl ToHtml for Vec<VNode> {
    #[inline(always)]
    fn to_html(&self) -> Html {
        self.clone().into_html()
    }

    #[inline(always)]
    fn into_html(self) -> Html {
        Html::VList(VList::with_children(self, None))
    }
}

impl ToHtml for VText {
    #[inline(always)]
    fn to_html(&self) -> Html {
        self.clone().into()
    }

    #[inline(always)]
    fn into_html(self) -> Html {
        Html::VText(self)
    }
}

impl ToHtml for VList {
    #[inline(always)]
    fn to_html(&self) -> Html {
        self.clone().into()
    }

    #[inline(always)]
    fn into_html(self) -> Html {
        Html::VList(self)
    }
}

impl ToHtml for ChildrenRenderer<VNode> {
    #[inline(always)]
    fn to_html(&self) -> Html {
        self.clone().into()
    }

    #[inline(always)]
    fn into_html(self) -> Html {
        self.into()
    }
}

impl<T> ToHtml for VChild<T>
where
    T: BaseComponent,
{
    #[inline(always)]
    fn to_html(&self) -> Html {
        self.clone().into()
    }

    #[inline(always)]
    fn into_html(self) -> Html {
        VNode::VComp(self.into())
    }
}

impl ToHtml for () {
    #[inline(always)]
    fn to_html(&self) -> Html {
        VNode::default()
    }

    #[inline(always)]
    fn into_html(self) -> Html {
        VNode::default()
    }
}

impl<T> ToHtml for &'_ T
where
    T: ToHtml,
{
    fn to_html(&self) -> Html {
        (*self).to_html()
    }
}

macro_rules! impl_to_html_via_display {
    ($from_ty: ty) => {
        impl ToHtml for $from_ty {
            #[inline(always)]
            fn to_html(&self) -> Html {
                Html::VText(VText::from(self))
            }
        }

        // Mirror ToHtml to Children implementation.
        impl IntoPropValue<ChildrenRenderer<VNode>> for $from_ty {
            #[inline(always)]
            fn into_prop_value(self) -> ChildrenRenderer<VNode> {
                ChildrenRenderer::new(vec![VText::from(self).into()])
            }
        }
    };
}

// These are a selection of types implemented via display.
impl_to_html_via_display!(bool);
impl_to_html_via_display!(char);
impl_to_html_via_display!(String);
impl_to_html_via_display!(&str);
impl_to_html_via_display!(Rc<str>);
impl_to_html_via_display!(Rc<String>);
impl_to_html_via_display!(Arc<str>);
impl_to_html_via_display!(Arc<String>);
impl_to_html_via_display!(AttrValue);
impl_to_html_via_display!(Cow<'_, str>);
impl_to_html_via_display!(u8);
impl_to_html_via_display!(u16);
impl_to_html_via_display!(u32);
impl_to_html_via_display!(u64);
impl_to_html_via_display!(u128);
impl_to_html_via_display!(usize);
impl_to_html_via_display!(i8);
impl_to_html_via_display!(i16);
impl_to_html_via_display!(i32);
impl_to_html_via_display!(i64);
impl_to_html_via_display!(i128);
impl_to_html_via_display!(isize);
impl_to_html_via_display!(f32);
impl_to_html_via_display!(f64);