| /* |
| * Copyright 2015 Google Inc. All Rights Reserved. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| // https://www.w3.org/TR/dom/#eventlistener |
| |
| callback interface EventListener { |
| // TODO: Because the EventHandler type is typedef'd as a nullable |
| // EventListener, we need to allow the return of a boolean value. The value |
| // of this will only be checked if the EventListener was added as an |
| // attribute (not through addEventListener). |
| boolean? handleEvent(Event event); |
| }; |
