| // 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. |
| |
| #ifndef COBALT_INPUT_KEYPRESS_GENERATOR_FILTER_H_ |
| #define COBALT_INPUT_KEYPRESS_GENERATOR_FILTER_H_ |
| |
| #include "cobalt/dom/keyboard_event.h" |
| #include "cobalt/input/key_event_handler.h" |
| |
| namespace cobalt { |
| namespace input { |
| |
| // Generates an additional keypress event for keydown events that correspond |
| // to a printable character or BS/Enter. |
| class KeypressGeneratorFilter : public KeyEventHandler { |
| public: |
| explicit KeypressGeneratorFilter(const KeyboardEventCallback& callback); |
| |
| explicit KeypressGeneratorFilter(KeyEventHandler* filter); |
| |
| // Conditionally generates an additional keypress event. |
| // Passes on the new and original events for further processing/handling. |
| void HandleKeyboardEvent(const dom::KeyboardEvent::Data& event) OVERRIDE; |
| |
| protected: |
| // Generates a keypress event, if: |
| // 1. The original event is a keydown. |
| // 2. The keycode corresponds to a printable character, or BS/Enter. |
| bool ConditionallyGenerateKeypressEvent( |
| const dom::KeyboardEvent::Data& orig_event); |
| }; |
| |
| } // namespace input |
| } // namespace cobalt |
| |
| #endif // COBALT_INPUT_KEYPRESS_GENERATOR_FILTER_H_ |