perspective_viewer/components/
expression_editor.rs

1// ┏━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┓
2// ┃ ██████ ██████ ██████       █      █      █      █      █ █▄  ▀███ █       ┃
3// ┃ ▄▄▄▄▄█ █▄▄▄▄▄ ▄▄▄▄▄█  ▀▀▀▀▀█▀▀▀▀▀ █ ▀▀▀▀▀█ ████████▌▐███ ███▄  ▀█ █ ▀▀▀▀▀ ┃
4// ┃ █▀▀▀▀▀ █▀▀▀▀▀ █▀██▀▀ ▄▄▄▄▄ █ ▄▄▄▄▄█ ▄▄▄▄▄█ ████████▌▐███ █████▄   █ ▄▄▄▄▄ ┃
5// ┃ █      ██████ █  ▀█▄       █ ██████      █      ███▌▐███ ███████▄ █       ┃
6// ┣━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┫
7// ┃ Copyright (c) 2017, the Perspective Authors.                              ┃
8// ┃ ╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌╌ ┃
9// ┃ This file is part of the Perspective library, distributed under the terms ┃
10// ┃ of the [Apache License 2.0](https://www.apache.org/licenses/LICENSE-2.0). ┃
11// ┗━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┛
12
13use std::rc::Rc;
14
15use perspective_client::{ExprValidationError, clone};
16use yew::prelude::*;
17
18use super::form::code_editor::*;
19use super::style::LocalStyle;
20use crate::session::Session;
21use crate::*;
22
23#[derive(Debug)]
24pub enum ExpressionEditorMsg {
25    SetExpr(Rc<String>),
26    ValidateComplete(Option<ExprValidationError>),
27}
28
29#[derive(Properties, PartialEq, Clone)]
30pub struct ExpressionEditorProps {
31    pub session: Session,
32    pub on_save: Callback<()>,
33    pub on_validate: Callback<bool>,
34    pub on_input: Callback<Rc<String>>,
35    pub alias: Option<String>,
36    pub disabled: bool,
37    #[prop_or_default]
38    pub reset_count: u8,
39}
40
41impl ExpressionEditorProps {
42    fn initial_expr(&self) -> Rc<String> {
43        self.alias
44            .as_ref()
45            .and_then(|alias| self.session.metadata().get_expression_by_alias(alias))
46            .unwrap_or_default()
47            .into()
48    }
49}
50
51/// Expression editor component `CodeEditor` and a button toolbar.
52pub struct ExpressionEditor {
53    expr: Rc<String>,
54    error: Option<ExprValidationError>,
55    oninput: Callback<Rc<String>>,
56}
57
58impl Component for ExpressionEditor {
59    type Message = ExpressionEditorMsg;
60    type Properties = ExpressionEditorProps;
61
62    fn create(ctx: &Context<Self>) -> Self {
63        let oninput = ctx.link().callback(ExpressionEditorMsg::SetExpr);
64        let expr = ctx.props().initial_expr();
65        ctx.link()
66            .send_message(Self::Message::SetExpr(expr.clone()));
67
68        Self {
69            error: None,
70            expr,
71            oninput,
72        }
73    }
74
75    fn update(&mut self, ctx: &Context<Self>, msg: Self::Message) -> bool {
76        match msg {
77            ExpressionEditorMsg::SetExpr(val) => {
78                ctx.props().on_input.emit(val.clone());
79                self.expr = val.clone();
80                clone!(ctx.props().session);
81                ctx.link().send_future(async move {
82                    match session.validate_expr(&val).await {
83                        Ok(x) => ExpressionEditorMsg::ValidateComplete(x),
84                        Err(err) => {
85                            web_sys::console::error_1(&format!("{:?}", err).into());
86                            ExpressionEditorMsg::ValidateComplete(None)
87                        },
88                    }
89                });
90
91                true
92            },
93            ExpressionEditorMsg::ValidateComplete(err) => {
94                self.error = err;
95                if self.error.is_none() {
96                    maybe!({
97                        let alias = ctx.props().alias.as_ref()?;
98                        let session = &ctx.props().session;
99                        let old = session.metadata().get_expression_by_alias(alias)?;
100                        let is_edited = *self.expr != old;
101                        session
102                            .metadata_mut()
103                            .set_edit_by_alias(alias, self.expr.to_string());
104                        Some(is_edited)
105                    });
106
107                    ctx.props().on_validate.emit(true);
108                } else {
109                    ctx.props().on_validate.emit(false);
110                }
111                true
112            },
113        }
114    }
115
116    fn view(&self, ctx: &Context<Self>) -> Html {
117        let disabled_class = ctx.props().disabled.then_some("disabled");
118        clone!(ctx.props().disabled);
119        html! {
120            <>
121                <LocalStyle href={css!("expression-editor")} />
122                <label class="item_title">{ "Expression" }</label>
123                <div id="editor-container" class={disabled_class}>
124                    <CodeEditor
125                        autofocus=true
126                        expr={&self.expr}
127                        autosuggest=true
128                        error={self.error.clone().map(|x| x.into())}
129                        {disabled}
130                        oninput={self.oninput.clone()}
131                        onsave={ctx.props().on_save.clone()}
132                    />
133                    <div id="psp-expression-editor-meta">
134                        <div class="error">
135                            { &self.error.clone().map(|e| e.error_message).unwrap_or_default() }
136                        </div>
137                    </div>
138                </div>
139            </>
140        }
141    }
142
143    fn changed(&mut self, ctx: &Context<Self>, old_props: &Self::Properties) -> bool {
144        if ctx.props().alias != old_props.alias || ctx.props().reset_count != old_props.reset_count
145        {
146            ctx.link()
147                .send_message(ExpressionEditorMsg::SetExpr(ctx.props().initial_expr()));
148            false
149        } else {
150            true
151        }
152    }
153}
perspective_viewer/components/expression_editor.rs

perspective_viewer/components/
expression_editor.rs
