124 lines
3.9 KiB
TypeScript
124 lines
3.9 KiB
TypeScript
/*---------------------------------------------------------------------------------------------
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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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import * as vscode from 'vscode';
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import { HtmlNode } from 'EmmetNode';
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import { getHtmlNode, parseDocument, validate } from './util';
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let balanceOutStack: Array<vscode.Selection[]> = [];
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let lastOut = false;
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let lastBalancedSelections: vscode.Selection[] = [];
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export function balanceOut() {
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balance(true);
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}
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export function balanceIn() {
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balance(false);
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}
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function balance(out: boolean) {
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if (!validate(false) || !vscode.window.activeTextEditor) {
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return;
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}
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const editor = vscode.window.activeTextEditor;
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let rootNode = <HtmlNode>parseDocument(editor.document);
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if (!rootNode) {
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return;
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}
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let getRangeFunction = out ? getRangeToBalanceOut : getRangeToBalanceIn;
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let newSelections: vscode.Selection[] = [];
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editor.selections.forEach(selection => {
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let range = getRangeFunction(editor.document, selection, rootNode);
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newSelections.push(range);
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});
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if (areSameSelections(newSelections, editor.selections)) {
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return;
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}
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if (areSameSelections(lastBalancedSelections, editor.selections)) {
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if (out) {
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if (!balanceOutStack.length) {
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balanceOutStack.push(editor.selections);
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}
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balanceOutStack.push(newSelections);
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} else {
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if (lastOut) {
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balanceOutStack.pop();
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}
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newSelections = balanceOutStack.pop() || newSelections;
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}
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} else {
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balanceOutStack = out ? [editor.selections, newSelections] : [];
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}
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lastOut = out;
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lastBalancedSelections = editor.selections = newSelections;
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}
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function getRangeToBalanceOut(document: vscode.TextDocument, selection: vscode.Selection, rootNode: HtmlNode): vscode.Selection {
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let nodeToBalance = getHtmlNode(document, rootNode, selection.start, false);
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if (!nodeToBalance) {
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return selection;
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}
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if (!nodeToBalance.close) {
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return new vscode.Selection(nodeToBalance.start, nodeToBalance.end);
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}
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let innerSelection = new vscode.Selection(nodeToBalance.open.end, nodeToBalance.close.start);
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let outerSelection = new vscode.Selection(nodeToBalance.start, nodeToBalance.end);
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if (innerSelection.contains(selection) && !innerSelection.isEqual(selection)) {
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return innerSelection;
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}
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if (outerSelection.contains(selection) && !outerSelection.isEqual(selection)) {
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return outerSelection;
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}
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return selection;
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}
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function getRangeToBalanceIn(document: vscode.TextDocument, selection: vscode.Selection, rootNode: HtmlNode): vscode.Selection {
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let nodeToBalance = getHtmlNode(document, rootNode, selection.start, true);
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if (!nodeToBalance) {
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return selection;
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}
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if (nodeToBalance.close) {
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const entireNodeSelected = selection.start.isEqual(nodeToBalance.start) && selection.end.isEqual(nodeToBalance.end);
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const startInOpenTag = selection.start.isAfter(nodeToBalance.open.start) && selection.start.isBefore(nodeToBalance.open.end);
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const startInCloseTag = selection.start.isAfter(nodeToBalance.close.start) && selection.start.isBefore(nodeToBalance.close.end);
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if (entireNodeSelected || startInOpenTag || startInCloseTag) {
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return new vscode.Selection(nodeToBalance.open.end, nodeToBalance.close.start);
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}
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}
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if (!nodeToBalance.firstChild) {
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return selection;
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}
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if (selection.start.isEqual(nodeToBalance.firstChild.start)
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&& selection.end.isEqual(nodeToBalance.firstChild.end)
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&& nodeToBalance.firstChild.close) {
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return new vscode.Selection(nodeToBalance.firstChild.open.end, nodeToBalance.firstChild.close.start);
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}
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return new vscode.Selection(nodeToBalance.firstChild.start, nodeToBalance.firstChild.end);
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}
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function areSameSelections(a: vscode.Selection[], b: vscode.Selection[]): boolean {
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if (a.length !== b.length) {
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return false;
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}
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for (let i = 0; i < a.length; i++) {
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if (!a[i].isEqual(b[i])) {
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return false;
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}
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}
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return true;
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} |