69 lines
2.5 KiB
JavaScript
Executable File
69 lines
2.5 KiB
JavaScript
Executable File
/*---------------------------------------------------------------------------------------------
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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 { ArrayNavigator } from './iterator.js';
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var HistoryNavigator = /** @class */ (function () {
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function HistoryNavigator(history, limit) {
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if (history === void 0) { history = []; }
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if (limit === void 0) { limit = 10; }
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this._initialize(history);
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this._limit = limit;
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this._onChange();
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}
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HistoryNavigator.prototype.add = function (t) {
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this._history.delete(t);
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this._history.add(t);
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this._onChange();
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};
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HistoryNavigator.prototype.next = function () {
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return this._navigator.next();
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};
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HistoryNavigator.prototype.previous = function () {
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return this._navigator.previous();
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};
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HistoryNavigator.prototype.current = function () {
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return this._navigator.current();
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};
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HistoryNavigator.prototype.parent = function () {
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return null;
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};
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HistoryNavigator.prototype.first = function () {
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return this._navigator.first();
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};
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HistoryNavigator.prototype.last = function () {
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return this._navigator.last();
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};
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HistoryNavigator.prototype.has = function (t) {
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return this._history.has(t);
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};
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HistoryNavigator.prototype._onChange = function () {
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this._reduceToLimit();
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this._navigator = new ArrayNavigator(this._elements, 0, this._elements.length, this._elements.length);
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};
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HistoryNavigator.prototype._reduceToLimit = function () {
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var data = this._elements;
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if (data.length > this._limit) {
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this._initialize(data.slice(data.length - this._limit));
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}
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};
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HistoryNavigator.prototype._initialize = function (history) {
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this._history = new Set();
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for (var _i = 0, history_1 = history; _i < history_1.length; _i++) {
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var entry = history_1[_i];
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this._history.add(entry);
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}
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};
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Object.defineProperty(HistoryNavigator.prototype, "_elements", {
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get: function () {
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var elements = [];
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this._history.forEach(function (e) { return elements.push(e); });
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return elements;
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},
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enumerable: true,
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configurable: true
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});
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return HistoryNavigator;
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}());
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export { HistoryNavigator };
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