| // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file |
| // for details. All rights reserved. Use of this source code is governed by a |
| // BSD-style license that can be found in the LICENSE file. |
| |
| part of $LIBRARYNAME; |
| |
| $(ANNOTATIONS)$(NATIVESPEC)$(CLASS_MODIFIERS)class $CLASSNAME$EXTENDS$IMPLEMENTS { |
| /** |
| * Checks to see if Indexed DB is supported on the current platform. |
| */ |
| static bool get supported { |
| return JS('bool', |
| '!!(window.indexedDB || ' |
| 'window.webkitIndexedDB || ' |
| 'window.mozIndexedDB)'); |
| } |
| |
| Future<Database> open(String name, |
| {int$NULLABLE version, |
| void onUpgradeNeeded(VersionChangeEvent event)$NULLABLE, |
| void onBlocked(Event event)$NULLABLE}) { |
| if ((version == null) != (onUpgradeNeeded == null)) { |
| return new Future.error(new ArgumentError( |
| 'version and onUpgradeNeeded must be specified together')); |
| } |
| try { |
| OpenDBRequest request; |
| if (version != null) { |
| request = _open(name, version); |
| } else { |
| request = _open(name); |
| } |
| |
| if (onUpgradeNeeded != null) { |
| request.onUpgradeNeeded.listen(onUpgradeNeeded); |
| } |
| if (onBlocked != null) { |
| request.onBlocked.listen(onBlocked); |
| } |
| return _completeRequest(request); |
| } catch (e, stacktrace) { |
| return new Future.error(e, stacktrace); |
| } |
| } |
| |
| Future<IdbFactory> deleteDatabase(String name, |
| {void onBlocked(Event e)$NULLABLE}) { |
| try { |
| var request = _deleteDatabase(name); |
| |
| if (onBlocked != null) { |
| request.onBlocked.listen(onBlocked); |
| } |
| var completer = new Completer<IdbFactory>.sync(); |
| request.onSuccess.listen((e) { |
| completer.complete(this); |
| }); |
| request.onError.listen(completer.completeError); |
| return completer.future; |
| } catch (e, stacktrace) { |
| return new Future.error(e, stacktrace); |
| } |
| } |
| |
| /** |
| * Deprecated. Always returns `false`. |
| */ |
| @Deprecated('No longer supported on modern browsers. Always returns false.') |
| bool get supportsDatabaseNames => false; |
| |
| $!MEMBERS |
| } |
| |
| |
| /** |
| * Ties a request to a completer, so the completer is completed when it succeeds |
| * and errors out when the request errors. |
| */ |
| Future<T> _completeRequest<T>(Request request) { |
| var completer = new Completer<T>.sync(); |
| // TODO: make sure that completer.complete is synchronous as transactions |
| // may be committed if the result is not processed immediately. |
| request.onSuccess.listen((e) { |
| T result = request.result; |
| completer.complete(result); |
| }); |
| request.onError.listen(completer.completeError); |
| return completer.future; |
| } |