@theia/core
Version:
Theia is a cloud & desktop IDE framework implemented in TypeScript.
58 lines • 2.03 kB
JavaScript
"use strict";
// *****************************************************************************
// Copyright (C) 2017 TypeFox and others.
//
// This program and the accompanying materials are made available under the
// terms of the Eclipse Public License v. 2.0 which is available at
// http://www.eclipse.org/legal/epl-2.0.
//
// This Source Code may also be made available under the following Secondary
// Licenses when the conditions for such availability set forth in the Eclipse
// Public License v. 2.0 are satisfied: GNU General Public License, version 2
// with the GNU Classpath Exception which is available at
// https://www.gnu.org/software/classpath/license.html.
//
// SPDX-License-Identifier: EPL-2.0 OR GPL-2.0-only WITH Classpath-exception-2.0
// *****************************************************************************
Object.defineProperty(exports, "__esModule", { value: true });
exports.TreeNavigationService = void 0;
const tslib_1 = require("tslib");
const inversify_1 = require("inversify");
let TreeNavigationService = class TreeNavigationService {
constructor() {
this.index = -1;
this.nodes = [];
}
get next() {
return this.nodes[this.index + 1];
}
get prev() {
return this.nodes[this.index - 1];
}
advance() {
const node = this.next;
if (node) {
this.index = this.index + 1;
return node;
}
return undefined;
}
retreat() {
const node = this.prev;
if (node) {
this.index = this.index - 1;
return node;
}
return undefined;
}
push(node) {
this.nodes = this.nodes.slice(0, this.index + 1);
this.nodes.push(node);
this.index = this.index + 1;
}
};
exports.TreeNavigationService = TreeNavigationService;
exports.TreeNavigationService = TreeNavigationService = tslib_1.__decorate([
(0, inversify_1.injectable)()
], TreeNavigationService);
//# sourceMappingURL=tree-navigation.js.map