yew_prism 0.4.2

Yew Prism is a highlighter code component based in Prism for yew
Documentation 
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

use crate::prism_sys::{highlight, languages as lang};
use web_sys::HtmlElement;
use yew::prelude::*;

pub struct Prism {
    pub code_ref: NodeRef,
    pub props: Props,
}

#[derive(Clone, Properties, PartialEq)]
pub struct Props {
    /// Code that you want to highlight
    pub code: String,
    /// Language of that code (rust, javascript, etc...)
    pub language: String,
}

impl Component for Prism {
    type Message = ();
    type Properties = Props;

    fn create(props: Self::Properties, _link: ComponentLink<Self>) -> Self {
        Self {
            props,
            code_ref: NodeRef::default(),
        }
    }

    fn update(&mut self, _msg: Self::Message) -> ShouldRender {
        false
    }

    fn change(&mut self, props: Self::Properties) -> ShouldRender {
        if self.props != props {
            self.props = props;
            true
        } else {
            false
        }
    }

    fn rendered(&mut self, _first_render: bool) {
        let template = highlight(
            self.props.code.clone(),
            lang.get(self.props.language.clone()),
        );

        if let Some(code) = self.code_ref.cast::<HtmlElement>() {
            code.set_inner_html(&template);
        }
    }

    fn view(&self) -> Html {
        html! {
            <pre>
                <code class=format!("language-{}", self.props.language) ref=self.code_ref.clone()>
                </code>
            </pre>
        }
    }
}