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

use crate::vdom::Attribute;
use crate::vdom::AttributeValue;
use crate::vdom::Element;
use crate::vdom::Leaf;
use crate::vdom::Node;
use crate::vdom::TemplatedView;

impl<MSG> Node<MSG> {
    /// map the msg of this node such that Node<MSG> becomes Node<MSG2>
    pub fn map_msg<F, MSG2>(self, cb: F) -> Node<MSG2>
    where
        F: Fn(MSG) -> MSG2 + Clone + 'static,
        MSG2: 'static,
        MSG: 'static,
    {
        match self {
            Node::Element(element) => Node::Element(element.map_msg(cb)),
            Node::Leaf(leaf) => Node::Leaf(leaf.map_msg(cb)),
        }
    }
}

impl<MSG> Element<MSG> {
    /// map the msg of this element such that `Element<MSG>` becomes `Element<MSG2>`
    pub fn map_msg<F, MSG2>(self, cb: F) -> Element<MSG2>
    where
        F: Fn(MSG) -> MSG2 + Clone + 'static,
        MSG2: 'static,
        MSG: 'static,
    {
        Element {
            namespace: self.namespace,
            tag: self.tag,
            attrs: self
                .attrs
                .into_iter()
                .map(|attr| attr.map_msg(cb.clone()))
                .collect(),
            children: self
                .children
                .into_iter()
                .map(|child| child.map_msg(cb.clone()))
                .collect(),
            self_closing: self.self_closing,
        }
    }
}

impl<MSG> Attribute<MSG> {
    /// map the msg of this attribute such that `Attribute<MSG>` becomes `Attribute<MSG2>`
    pub fn map_msg<F, MSG2>(self, cb: F) -> Attribute<MSG2>
    where
        F: Fn(MSG) -> MSG2 + Clone + 'static,
        MSG2: 'static,
        MSG: 'static,
    {
        Attribute {
            name: self.name,
            value: self
                .value
                .into_iter()
                .map(|v| v.map_msg(cb.clone()))
                .collect(),
            namespace: self.namespace,
        }
    }
}

impl<MSG> AttributeValue<MSG> {
    /// map the msg of this AttributeValue such that `AttributeValue<MSG>` becomes
    /// `AttributeValue<MSG2>`
    pub fn map_msg<F, MSG2>(self, cb: F) -> AttributeValue<MSG2>
    where
        F: Fn(MSG) -> MSG2 + Clone + 'static,
        MSG2: 'static,
        MSG: 'static,
    {
        match self {
            AttributeValue::Simple(this) => AttributeValue::Simple(this),
            AttributeValue::Style(this) => AttributeValue::Style(this),
            AttributeValue::EventListener(this) => AttributeValue::EventListener(this.map_msg(cb)),
            AttributeValue::ComponentEventListener(this) => {
                AttributeValue::ComponentEventListener(this)
            }
            AttributeValue::Empty => AttributeValue::Empty,
        }
    }
}

impl<MSG> Leaf<MSG> {
    /// map the msg of this Leaf such that `Leaf<MSG>` becomes `Leaf<MSG2>`
    pub fn map_msg<F, MSG2>(self, cb: F) -> Leaf<MSG2>
    where
        F: Fn(MSG) -> MSG2 + Clone + 'static,
        MSG2: 'static,
        MSG: 'static,
    {
        match self {
            Self::Text(v) => Leaf::Text(v),
            Self::Symbol(v) => Leaf::Symbol(v),
            Self::Comment(v) => Leaf::Comment(v),
            Self::DocType(v) => Leaf::DocType(v),
            Self::Fragment(nodes) => Leaf::Fragment(
                nodes
                    .into_iter()
                    .map(|node| node.map_msg(cb.clone()))
                    .collect(),
            ),
            Self::NodeList(node_list) => Leaf::NodeList(
                node_list
                    .into_iter()
                    .map(|node| node.map_msg(cb.clone()))
                    .collect(),
            ),
            Self::StatefulComponent(v) => Leaf::StatefulComponent(v.map_msg(cb)),
            Self::StatelessComponent(v) => Leaf::StatelessComponent(v.map_msg(cb)),
            Self::TemplatedView(v) => Leaf::TemplatedView(v.map_msg(cb)),
        }
    }
}

impl<MSG> TemplatedView<MSG> {
    /// mape the msg of this TemplatedView such that `TemplatedView<MSG>` becomes `TemplatedView<MSG2>`
    pub fn map_msg<F, MSG2>(self, cb: F) -> TemplatedView<MSG2>
    where
        F: Fn(MSG) -> MSG2 + Clone + 'static,
        MSG2: 'static,
        MSG: 'static,
    {
        TemplatedView {
            view: Box::new(self.view.map_msg(cb.clone())),
            skip_diff: self.skip_diff,
        }
    }
}