mirror of
https://github.com/tengge1/ShadowEditor.git
synced 2026-01-25 15:08:11 +00:00
99 lines
2.4 KiB
JavaScript
99 lines
2.4 KiB
JavaScript
/**
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* @author mrdoob / http://mrdoob.com/
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*/
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var Storage = function () {
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var indexedDB = window.indexedDB || window.mozIndexedDB || window.webkitIndexedDB || window.msIndexedDB;
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if (indexedDB === undefined) {
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console.warn('存储：IndexedDB不可用。');
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return { init: function () { }, get: function () { }, set: function () { }, clear: function () { } };
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}
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var name = 'threejs-editor';
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var version = 1;
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var database;
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return {
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init: function (callback) {
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var request = indexedDB.open(name, version);
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request.onupgradeneeded = function (event) {
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var db = event.target.result;
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if (db.objectStoreNames.contains('states') === false) {
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db.createObjectStore('states');
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}
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};
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request.onsuccess = function (event) {
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database = event.target.result;
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callback();
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};
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request.onerror = function (event) {
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console.error('IndexedDB', event);
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};
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},
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get: function (callback) {
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var transaction = database.transaction(['states'], 'readwrite');
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var objectStore = transaction.objectStore('states');
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var request = objectStore.get(0);
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request.onsuccess = function (event) {
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callback(event.target.result);
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};
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},
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set: function (data, callback) {
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var start = performance.now();
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var transaction = database.transaction(['states'], 'readwrite');
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var objectStore = transaction.objectStore('states');
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var request = objectStore.put(data, 0);
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request.onsuccess = function (event) {
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console.log('[' + /\d\d\:\d\d\:\d\d/.exec(new Date())[0] + ']', '保存到IndexedDB中。 ' + (performance.now() - start).toFixed(2) + 'ms');
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};
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},
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clear: function () {
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if (database === undefined) return;
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var transaction = database.transaction(['states'], 'readwrite');
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var objectStore = transaction.objectStore('states');
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var request = objectStore.clear();
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request.onsuccess = function (event) {
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console.log('[' + /\d\d\:\d\d\:\d\d/.exec(new Date())[0] + ']', '清空IndexedDB。');
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};
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}
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};
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};
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