@theia/core
Version:
Theia is a cloud & desktop IDE framework implemented in TypeScript.
63 lines • 2.52 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 WITH Classpath-exception-2.0
// *****************************************************************************
var __decorate = (this && this.__decorate) || function (decorators, target, key, desc) {
var c = arguments.length, r = c < 3 ? target : desc === null ? desc = Object.getOwnPropertyDescriptor(target, key) : desc, d;
if (typeof Reflect === "object" && typeof Reflect.decorate === "function") r = Reflect.decorate(decorators, target, key, desc);
else for (var i = decorators.length - 1; i >= 0; i--) if (d = decorators[i]) r = (c < 3 ? d(r) : c > 3 ? d(target, key, r) : d(target, key)) || r;
return c > 3 && r && Object.defineProperty(target, key, r), r;
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.TreeNavigationService = void 0;
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;
}
};
TreeNavigationService = __decorate([
(0, inversify_1.injectable)()
], TreeNavigationService);
exports.TreeNavigationService = TreeNavigationService;
//# sourceMappingURL=tree-navigation.js.map