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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at <http://mozilla.org/MPL/2.0/>. */
import { Component } from "react";
import PropTypes from "prop-types";
class HighlightLines extends Component {
static get propTypes() {
return {
editor: PropTypes.object.isRequired,
range: PropTypes.object.isRequired,
};
}
componentDidMount() {
this.highlightLineRange();
}
// FIXME: https://bugzilla.mozilla.org/show_bug.cgi?id=1774507
UNSAFE_componentWillUpdate() {
this.clearHighlightRange();
}
componentDidUpdate() {
this.highlightLineRange();
}
componentWillUnmount() {
this.clearHighlightRange();
}
clearHighlightRange() {
const { range, editor } = this.props;
const { codeMirror } = editor;
if (!range || !codeMirror) {
return;
}
const { start, end } = range;
codeMirror.operation(() => {
for (let line = start - 1; line < end; line++) {
codeMirror.removeLineClass(line, "wrap", "highlight-lines");
}
});
}
highlightLineRange = () => {
const { range, editor } = this.props;
const { codeMirror } = editor;
if (!range || !codeMirror) {
return;
}
const { start, end } = range;
codeMirror.operation(() => {
editor.alignLine(start);
for (let line = start - 1; line < end; line++) {
codeMirror.addLineClass(line, "wrap", "highlight-lines");
}
});
};
render() {
return null;
}
}
export default HighlightLines;
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