| 1 | var Storage = function () {
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| 2 |
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| 3 | var indexedDB = window.indexedDB || window.mozIndexedDB || window.webkitIndexedDB || window.msIndexedDB;
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| 4 |
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| 5 | var name = 'threejs-editor';
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| 6 | var version = 1;
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| 7 |
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| 8 | var database;
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| 9 |
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| 10 | return {
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| 11 |
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| 12 | init: function ( callback ) {
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| 13 |
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| 14 | var request = indexedDB.open( name, version );
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| 15 | request.onupgradeneeded = function ( event ) {
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| 16 |
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| 17 | var db = event.target.result;
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| 18 |
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| 19 | if ( db.objectStoreNames.contains( 'states' ) === false ) {
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| 20 |
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| 21 | db.createObjectStore( 'states' );
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| 22 |
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| 23 | }
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| 24 |
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| 25 | };
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| 26 | request.onsuccess = function ( event ) {
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| 27 |
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| 28 | database = event.target.result;
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| 29 |
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| 30 | callback();
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| 31 |
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| 32 | };
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| 33 | request.onerror = function ( event ) {
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| 34 |
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| 35 | console.error( 'IndexedDB', event );
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| 36 |
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| 37 | };
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| 38 |
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| 39 |
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| 40 | },
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| 41 |
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| 42 | get: function ( callback ) {
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| 43 |
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| 44 | var transaction = database.transaction( [ 'states' ], 'readwrite' );
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| 45 | var objectStore = transaction.objectStore( 'states' );
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| 46 | var request = objectStore.get( 0 );
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| 47 | request.onsuccess = function ( event ) {
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| 48 |
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| 49 | callback( event.target.result );
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| 50 |
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| 51 | };
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| 52 |
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| 53 | },
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| 54 |
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| 55 | set: function ( data, callback ) {
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| 56 |
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| 57 | var transaction = database.transaction( [ 'states' ], 'readwrite' );
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| 58 | var objectStore = transaction.objectStore( 'states' );
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| 59 | var request = objectStore.put( data, 0 );
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| 60 | request.onsuccess = function ( event ) {
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| 61 |
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| 62 | console.log( '[' + /\d\d\:\d\d\:\d\d/.exec( new Date() )[ 0 ] + ']', 'Saved state to IndexedDB.' );
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| 63 |
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| 64 | };
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| 65 |
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| 66 | },
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| 67 |
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| 68 | clear: function ( callback ) {
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| 69 |
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| 70 | var transaction = database.transaction( [ 'states' ], 'readwrite' );
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| 71 | var objectStore = transaction.objectStore( 'states' );
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| 72 | var request = objectStore.clear();
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| 73 | request.onsuccess = function ( event ) {
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| 74 |
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| 75 | callback();
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| 76 |
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| 77 | };
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| 78 |
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| 79 | }
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| 80 |
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| 81 | }
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| 82 |
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| 83 | }; |
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