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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 { PureComponent } from "devtools/client/shared/vendor/react";
import PropTypes from "devtools/client/shared/vendor/react-prop-types";
import {
toEditorPosition,
getDocument,
hasDocument,
startOperation,
endOperation,
getTokenEnd,
} from "../../utils/editor/index";
import { isException } from "../../utils/pause/index";
import { getIndentation } from "../../utils/indentation";
import { connect } from "devtools/client/shared/vendor/react-redux";
import {
getVisibleSelectedFrame,
getPauseReason,
getSourceTextContent,
getCurrentThread,
} from "../../selectors/index";
export class DebugLine extends PureComponent {
debugExpression;
static get propTypes() {
return {
location: PropTypes.object,
why: PropTypes.object,
};
}
componentDidMount() {
const { why, location } = this.props;
this.setDebugLine(why, location);
}
componentWillUnmount() {
const { why, location } = this.props;
this.clearDebugLine(why, location);
}
componentDidUpdate(prevProps) {
const { why, location } = this.props;
startOperation();
this.clearDebugLine(prevProps.why, prevProps.location);
this.setDebugLine(why, location);
endOperation();
}
setDebugLine(why, location) {
if (!location) {
return;
}
const doc = getDocument(location.source.id);
let { line, column } = toEditorPosition(location);
let { markTextClass, lineClass } = this.getTextClasses(why);
doc.addLineClass(line, "wrap", lineClass);
const lineText = doc.getLine(line);
column = Math.max(column, getIndentation(lineText));
// If component updates because user clicks on
// another source tab, codeMirror will be null.
const columnEnd = doc.cm ? getTokenEnd(doc.cm, line, column) : null;
if (columnEnd === null) {
markTextClass += " to-line-end";
}
this.debugExpression = doc.markText(
{ ch: column, line },
{ ch: columnEnd, line },
{ className: markTextClass }
);
}
clearDebugLine(why, location) {
// Avoid clearing the line if we didn't set a debug line before,
// or, if the document is no longer available
if (!location || !hasDocument(location.source.id)) {
return;
}
if (this.debugExpression) {
this.debugExpression.clear();
}
const { line } = toEditorPosition(location);
const doc = getDocument(location.source.id);
const { lineClass } = this.getTextClasses(why);
doc.removeLineClass(line, "wrap", lineClass);
}
getTextClasses(why) {
if (why && isException(why)) {
return {
markTextClass: "debug-expression-error",
lineClass: "new-debug-line-error",
};
}
return { markTextClass: "debug-expression", lineClass: "new-debug-line" };
}
render() {
return null;
}
}
function isDocumentReady(location, sourceTextContent) {
return location && sourceTextContent && hasDocument(location.source.id);
}
const mapStateToProps = state => {
// Avoid unecessary intermediate updates when there is no location
// or the source text content isn't yet fully loaded
const frame = getVisibleSelectedFrame(state);
const location = frame?.location;
if (!location) {
return {};
}
const sourceTextContent = getSourceTextContent(state, location);
if (!isDocumentReady(location, sourceTextContent)) {
return {};
}
return {
location,
why: getPauseReason(state, getCurrentThread(state)),
};
};
export default connect(mapStateToProps)(DebugLine);
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