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

#![recursion_limit = "256"]

use yew::prelude::*;
use yew::Properties;

pub struct RangedValue {
    link: ComponentLink<Self>,
    local_value_buf: String,
    local_float: Option<f32>,
    unit: String,
    min: f32,
    max: f32,
    current: f32,
    placeholder: String,
    onsignal: Option<Callback<f32>>,
    // current_value_label: &'static str,
}

pub enum Msg {
    NewValue(String),
    SendValue,
    Ignore,
}

#[derive(PartialEq, Clone, Properties)]
pub struct Props {
    pub unit: String,
    pub min: f32,
    pub max: f32,
    pub current: f32,
    pub placeholder: String,
    pub onsignal: Option<Callback<f32>>,
    // pub current_value_label: &'static str,
}

impl Component for RangedValue {
    type Message = Msg;
    type Properties = Props;

    fn create(props: Self::Properties, link: ComponentLink<Self>) -> Self {
        Self {
            link,
            local_value_buf: format!("{}", props.current),
            local_float: Some(props.current),
            unit: props.unit,
            min: props.min,
            max: props.max,
            current: props.current,
            placeholder: props.placeholder,
            onsignal: props.onsignal,
            // current_value_label: props.current_value_label,
        }
    }

    fn update(&mut self, msg: Self::Message) -> ShouldRender {
        match msg {
            Msg::NewValue(new_value) => {
                self.local_value_buf = new_value;
                match self.local_value_buf.parse() {
                    Ok(vfloat) => {
                        if (self.min <= vfloat) && (vfloat <= self.max) {
                            self.local_float = Some(vfloat);
                        } else {
                            self.local_float = None;
                        }
                    }
                    Err(_e) => {
                        self.local_float = None;
                    }
                }
            }
            Msg::SendValue => {
                if let Some(ref mut callback) = self.onsignal {
                    if let Some(value) = self.local_float {
                        callback.emit(value);
                    }
                }
                return false; // no need to rerender DOM
            }
            Msg::Ignore => {
                return false; // no need to rerender DOM
            }
        }
        true
    }

    fn change(&mut self, props: Self::Properties) -> ShouldRender {
        self.unit = props.unit;
        self.min = props.min;
        self.max = props.max;
        self.current = props.current;
        self.placeholder = props.placeholder;
        self.onsignal = props.onsignal;
        // self.current_value_label = props.current_value_label;
        true
    }

    fn view(&self) -> Html {
        let current_str = format!("{} ", self.current);
        let range = format!("Range: {} - {} {}", self.min, self.max, self.unit);
        let error = if self.local_float.is_some() {
            ""
        } else {
            "ERROR"
        };
        let input_class = if self.local_float.is_some() {
            "ranged-value-input"
        } else {
            "ranged-value-input-error"
        };
        html! {
            <div class="ranged-value",>
                <div class="ranged-value-state",>
                //    { &self.current_value_label }{ current_str }{ self.unit.clone() }
                   { current_str }{ self.unit.clone() }
                </div>
                <div class="ranged-value-range",>
                    { range }
                </div>
                <div>
                    <input type="text",
                        class=input_class,
                        placeholder=&self.placeholder,
                        value=&self.local_value_buf,
                        oninput=self.link.callback(|e: InputData| Msg::NewValue(e.value)),
                        onblur=self.link.callback(|_| Msg::SendValue),
                        onkeypress=self.link.callback(|e: KeyboardEvent| {
                            if e.key() == "Enter" { Msg::SendValue } else { Msg::Ignore }
                        }), />
                    {error}
                </div>
            </div>
        }
    }
}