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// 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_