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/*---------------------------------------------------------------------------------------------
* 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 { validate } from './util';
export function fetchEditPoint(direction: string): void {
if (!validate() || !vscode.window.activeTextEditor) {
return;
}
const editor = vscode.window.activeTextEditor;
let newSelections: vscode.Selection[] = [];
editor.selections.forEach(selection => {
let updatedSelection = direction === 'next' ? nextEditPoint(selection, editor) : prevEditPoint(selection, editor);
newSelections.push(updatedSelection);
});
editor.selections = newSelections;
editor.revealRange(editor.selections[editor.selections.length - 1]);
}
function nextEditPoint(selection: vscode.Selection, editor: vscode.TextEditor): vscode.Selection {
for (let lineNum = selection.anchor.line; lineNum < editor.document.lineCount; lineNum++) {
let updatedSelection = findEditPoint(lineNum, editor, selection.anchor, 'next');
if (updatedSelection) {
return updatedSelection;
}
}
return selection;
}
function prevEditPoint(selection: vscode.Selection, editor: vscode.TextEditor): vscode.Selection {
for (let lineNum = selection.anchor.line; lineNum >= 0; lineNum--) {
let updatedSelection = findEditPoint(lineNum, editor, selection.anchor, 'prev');
if (updatedSelection) {
return updatedSelection;
}
}
return selection;
}
function findEditPoint(lineNum: number, editor: vscode.TextEditor, position: vscode.Position, direction: string): vscode.Selection | undefined {
let line = editor.document.lineAt(lineNum);
let lineContent = line.text;
if (lineNum !== position.line && line.isEmptyOrWhitespace && lineContent.length) {
return new vscode.Selection(lineNum, lineContent.length, lineNum, lineContent.length);
}
if (lineNum === position.line && direction === 'prev') {
lineContent = lineContent.substr(0, position.character);
}
let emptyAttrIndex = direction === 'next' ? lineContent.indexOf('""', lineNum === position.line ? position.character : 0) : lineContent.lastIndexOf('""');
let emptyTagIndex = direction === 'next' ? lineContent.indexOf('><', lineNum === position.line ? position.character : 0) : lineContent.lastIndexOf('><');
let winner = -1;
if (emptyAttrIndex > -1 && emptyTagIndex > -1) {
winner = direction === 'next' ? Math.min(emptyAttrIndex, emptyTagIndex) : Math.max(emptyAttrIndex, emptyTagIndex);
} else if (emptyAttrIndex > -1) {
winner = emptyAttrIndex;
} else {
winner = emptyTagIndex;
}
if (winner > -1) {
return new vscode.Selection(lineNum, winner + 1, lineNum, winner + 1);
}
return;
}
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