monaco-editor
Version:
A browser based code editor
72 lines (69 loc) • 3.08 kB
JavaScript
import { coalesce } from '../../../../base/common/arrays.js';
import { AsyncIterableProducer } from '../../../../base/common/async.js';
/*---------------------------------------------------------------------------------------------
* Copyright (c) Microsoft Corporation. All rights reserved.
* Licensed under the MIT License. See License.txt in the project root for license information.
*--------------------------------------------------------------------------------------------*/
class ContentHoverComputer {
constructor(_editor, _participants) {
this._editor = _editor;
this._participants = _participants;
}
static _getLineDecorations(editor, anchor) {
if (anchor.type !== 1 /* HoverAnchorType.Range */ && !anchor.supportsMarkerHover) {
return [];
}
const model = editor.getModel();
const lineNumber = anchor.range.startLineNumber;
if (lineNumber > model.getLineCount()) {
// invalid line
return [];
}
const maxColumn = model.getLineMaxColumn(lineNumber);
return editor.getLineDecorations(lineNumber).filter((d) => {
if (d.options.isWholeLine) {
return true;
}
const startColumn = (d.range.startLineNumber === lineNumber) ? d.range.startColumn : 1;
const endColumn = (d.range.endLineNumber === lineNumber) ? d.range.endColumn : maxColumn;
if (d.options.showIfCollapsed) {
// Relax check around `showIfCollapsed` decorations to also include +/- 1 character
if (startColumn > anchor.range.startColumn + 1 || anchor.range.endColumn - 1 > endColumn) {
return false;
}
}
else {
if (startColumn > anchor.range.startColumn || anchor.range.endColumn > endColumn) {
return false;
}
}
return true;
});
}
computeAsync(options, token) {
const anchor = options.anchor;
if (!this._editor.hasModel() || !anchor) {
return AsyncIterableProducer.EMPTY;
}
const lineDecorations = ContentHoverComputer._getLineDecorations(this._editor, anchor);
return AsyncIterableProducer.merge(this._participants.map((participant) => {
if (!participant.computeAsync) {
return AsyncIterableProducer.EMPTY;
}
return participant.computeAsync(anchor, lineDecorations, options.source, token);
}));
}
computeSync(options) {
if (!this._editor.hasModel()) {
return [];
}
const anchor = options.anchor;
const lineDecorations = ContentHoverComputer._getLineDecorations(this._editor, anchor);
let result = [];
for (const participant of this._participants) {
result = result.concat(participant.computeSync(anchor, lineDecorations, options.source));
}
return coalesce(result);
}
}
export { ContentHoverComputer };