48 lines
2.1 KiB
JavaScript
48 lines
2.1 KiB
JavaScript
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/*---------------------------------------------------------------------------------------------
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* Copyright (c) Microsoft Corporation. All rights reserved.
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* Licensed under the MIT License. See License.txt in the project root for license information.
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*--------------------------------------------------------------------------------------------*/
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'use strict';
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import { Range, SelectionRange } from '../cssLanguageTypes';
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import { NodeType } from '../parser/cssNodes';
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export function getSelectionRanges(document, positions, stylesheet) {
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function getSelectionRange(position) {
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const applicableRanges = getApplicableRanges(position);
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let current = undefined;
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for (let index = applicableRanges.length - 1; index >= 0; index--) {
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current = SelectionRange.create(Range.create(document.positionAt(applicableRanges[index][0]), document.positionAt(applicableRanges[index][1])), current);
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}
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if (!current) {
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current = SelectionRange.create(Range.create(position, position));
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}
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return current;
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}
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return positions.map(getSelectionRange);
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function getApplicableRanges(position) {
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const offset = document.offsetAt(position);
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let currNode = stylesheet.findChildAtOffset(offset, true);
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if (!currNode) {
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return [];
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}
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const result = [];
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while (currNode) {
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if (currNode.parent &&
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currNode.offset === currNode.parent.offset &&
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currNode.end === currNode.parent.end) {
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currNode = currNode.parent;
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continue;
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}
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// The `{ }` part of `.a { }`
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if (currNode.type === NodeType.Declarations) {
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if (offset > currNode.offset && offset < currNode.end) {
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// Return `{ }` and the range inside `{` and `}`
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result.push([currNode.offset + 1, currNode.end - 1]);
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}
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}
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result.push([currNode.offset, currNode.end]);
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currNode = currNode.parent;
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}
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return result;
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}
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}
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