/*
* Created on May 21, 2009
*
* 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.
*
* Copyright @2009-2013 the original author or authors.
*/
package org.fest.swing.keystroke;
import static org.fest.util.Maps.newHashMap;
import java.util.Map;
import javax.annotation.Nonnull;
import javax.annotation.Nullable;
import javax.swing.KeyStroke;
/**
* Mapping between characters and {@code KeyStroke}s.
*
* @author Alex Ruiz
*/
class KeyStrokeMapCollection {
private final Map<Character, KeyStroke> charToKeyStroke = newHashMap();
private final Map<KeyStroke, Character> keyStrokeToChar = newHashMap();
void add(@Nonnull Character character, @Nonnull KeyStroke keyStroke) {
charToKeyStroke.put(character, keyStroke);
keyStrokeToChar.put(keyStroke, character);
}
void clear() {
charToKeyStroke.clear();
keyStrokeToChar.clear();
}
boolean isEmpty() {
return charToKeyStroke.isEmpty() && keyStrokeToChar.isEmpty();
}
@Nullable KeyStroke keyStrokeFor(char character) {
return charToKeyStroke.get(character);
}
@Nullable Character charFor(KeyStroke keyStroke) {
return keyStrokeToChar.get(keyStroke);
}
}