/*---------------------------------------------------------------------------------------------

* Copyright (c) Microsoft Corporation. All rights reserved.

* Licensed under the MIT License. See License.txt in the project root for license information.

*--------------------------------------------------------------------------------------------*/

import * as vscode from 'vscode';

import { HtmlNode } from 'EmmetNode';

import { getHtmlNode, parseDocument, validate } from './util';

export function updateTag(tagName: string): Thenable<boolean> | undefined {

if (!validate(false) || !vscode.window.activeTextEditor) {

return;

}

let editor = vscode.window.activeTextEditor;

let rootNode = <HtmlNode>parseDocument(editor.document);

if (!rootNode) {

return;

}

let rangesToUpdate: vscode.Range[] = [];

editor.selections.reverse().forEach(selection => {

rangesToUpdate = rangesToUpdate.concat(getRangesToUpdate(editor, selection, rootNode));

});

return editor.edit(editBuilder => {

rangesToUpdate.forEach(range => {

editBuilder.replace(range, tagName);

});

});

}

function getRangesToUpdate(editor: vscode.TextEditor, selection: vscode.Selection, rootNode: HtmlNode): vscode.Range[] {

let nodeToUpdate = getHtmlNode(editor.document, rootNode, selection.start, true);

if (!nodeToUpdate) {

return [];

}

let openStart = nodeToUpdate.open.start.translate(0, 1);

let openEnd = openStart.translate(0, nodeToUpdate.name.length);

let ranges = [new vscode.Range(openStart, openEnd)];

if (nodeToUpdate.close) {

let closeStart = nodeToUpdate.close.start.translate(0, 2);

let closeEnd = nodeToUpdate.close.end.translate(0, -1);

ranges.push(new vscode.Range(closeStart, closeEnd));

}

return ranges;

}