101 lines
3.0 KiB
TypeScript
101 lines
3.0 KiB
TypeScript
import React, { ReactNode, useMemo, useRef, useState } from "react";
|
|
import "./Editor.css";
|
|
import { Highlight } from "./highlight";
|
|
import { buildShadow } from "./shadow";
|
|
import OrgAst, { OrgNodeReference } from "./OrgAst";
|
|
import { parse_org } from "../../organic/target/wasm32-unknown-unknown/js/wasm";
|
|
|
|
const default_org_source: string = `Welcome to the Organic Ast Explorer!
|
|
|
|
Type your Org [fn:1] source in this text box, and it will be parsed by Organic [fn:2] that has been compiled into wasm and embedded in this page. The resulting AST will be rendered to the right.
|
|
|
|
In the AST on the right, you can:
|
|
|
|
1. Click on an AST node to highlight the corresponding portion of the Org source on the left.
|
|
2. Expand/Collapse the children, properties, and standard properties.
|
|
|
|
* Footnotes
|
|
|
|
[fn:1] https://orgmode.org/
|
|
|
|
[fn:2] https://code.fizz.buzz/talexander/organic
|
|
`;
|
|
|
|
function Editor({ defaultValue = default_org_source }) {
|
|
function handleChange(event: React.ChangeEvent<HTMLTextAreaElement>) {
|
|
setValue(event.target.value);
|
|
clearHighlights();
|
|
}
|
|
|
|
const [value, setValue] = useState(defaultValue);
|
|
|
|
const [highlights, setHighlights] = useState<Array<Highlight>>([]);
|
|
|
|
const astTree = useMemo(() => {
|
|
const astTree = parse_org(value);
|
|
console.log(JSON.stringify(astTree));
|
|
return astTree;
|
|
}, [value]);
|
|
|
|
function setHighlight(nodes: OrgNodeReference[]) {
|
|
let new_highlights = nodes.map((node: OrgNodeReference) => {
|
|
return new Highlight(node.start - 1, node.end - 1);
|
|
});
|
|
new_highlights.sort(function (a, b) {
|
|
if (a.start < b.start) return -1;
|
|
if (a.start > b.start) return 1;
|
|
return 0;
|
|
});
|
|
setHighlights(new_highlights);
|
|
}
|
|
|
|
function addHighlight(start: number, end: number) {
|
|
let new_highlights = [...highlights, new Highlight(start, end)];
|
|
new_highlights.sort(function (a, b) {
|
|
if (a.start < b.start) return -1;
|
|
if (a.start > b.start) return 1;
|
|
return 0;
|
|
});
|
|
setHighlights(new_highlights);
|
|
}
|
|
|
|
function clearHighlights() {
|
|
setHighlights([]);
|
|
}
|
|
|
|
const textAreaRef = useRef<HTMLTextAreaElement>(null);
|
|
const shadowRef = useRef<HTMLDivElement>(null);
|
|
function onTextAreaScroll() {
|
|
if (shadowRef.current !== null && textAreaRef.current !== null) {
|
|
const textAreaScrollTop = textAreaRef.current.scrollTop;
|
|
shadowRef.current.scrollTop = textAreaScrollTop;
|
|
}
|
|
}
|
|
|
|
return (
|
|
<div className="Editor">
|
|
<div className="Editor-textwrapper">
|
|
<textarea
|
|
ref={textAreaRef}
|
|
onChange={handleChange}
|
|
className="Editor-textarea"
|
|
value={value}
|
|
onScroll={onTextAreaScroll}
|
|
/>
|
|
<div ref={shadowRef} className="Editor-underlay">
|
|
{buildShadow(highlights, value)}
|
|
<br />
|
|
</div>
|
|
</div>
|
|
<OrgAst
|
|
setHighlight={setHighlight}
|
|
clearHighlights={clearHighlights}
|
|
value={value}
|
|
astTree={astTree}
|
|
/>
|
|
</div>
|
|
);
|
|
}
|
|
|
|
export default Editor;
|