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import {
StreamlitComponentBase,
withStreamlitConnection,
} from "streamlit-component-lib";
type HighlightedTextState = {
activeIndex: number | null,
hoverIndex: number | null,
isFrozen: boolean
};
/**
* This is a React-based component template. The `render()` function is called
* automatically when your component should be re-rendered.
*/
class HighlightedText extends StreamlitComponentBase<HighlightedTextState> {
public state = {activeIndex: null, hoverIndex: null, isFrozen: false};
render() {
const tokens: string[] = this.props.args["tokens"];
const scores: number[] = this.getScores();
console.log(scores);
let className = "highlighted-text";
if (this.state.isFrozen) {
className += " frozen";
}
const onClick = () => {
this.setState({ isFrozen: false });
};
return <>
<div className="status-bar" key="status-bar">
<span className={this.state.isFrozen ? "" : " d-none"} key="lock-icon"><i className="fa fa-lock"></i> </span>
<strong key="target-label">target:</strong>
{
this.state.activeIndex != null
? <span className="token" key="target">{tokens[this.state.activeIndex]}</span>
: <></>
}
</div>
<div className={className} onClick={onClick} key="text">
{
tokens.map((t: string, i: number) => {
let className = "token";
if (this.state) {
if (this.state.activeIndex == i) {
className += " active";
}
}
const style = {
backgroundColor:
scores[i] > 0
? `rgba(255, 32, 32, ${scores[i]})`
: `rgba(32, 255, 32, ${-scores[i]})`
};
const onMouseOver = () => {
if (!this.state.isFrozen) {
this.setState({ activeIndex: i });
}
this.setState({ hoverIndex: i });
};
return <span key={i} className={className} style={style}
onMouseOver={onMouseOver} onClick={onClick}>{t}</span>;
})
}
</div>
</>;
}
private getScores() {
const tokens = this.props.args["tokens"];
if (!this.state || this.state.activeIndex == null || this.state.activeIndex < 1) {
return tokens.map(() => 0);
}
const allScores: number[][] = this.props.args["scores"];
const i = this.state.activeIndex - 1;
const hi = Math.min(Math.max(0, i), allScores[i].length);
const row = allScores[i].slice(0, hi);
row.reverse();
let result = [
...Array(Math.max(0, i - 1 - row.length)).fill(0),
...row.map((x) => x == undefined || isNaN(x) ? 0 : x)
];
result = [...result, ...Array(tokens.length - result.length).fill(0)];
return result;
}
}
export default withStreamlitConnection(HighlightedText);
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