/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.
*/
package org.waveprotocol.wave.client.common.util;
import org.waveprotocol.wave.model.util.IntMap;
import org.waveprotocol.wave.model.util.ReadableIntMap;
import java.util.Map;
/**
* An implementation of IntMap<V> based on JavaScript objects.
*
* @author ohler@google.com (Christian Ohler)
*
* @param <V> type of values in the map
*/
public class JsoIntMap<V> implements IntMap<V> {
final org.waveprotocol.wave.client.common.util.IntMapJsoView<V> backend =
org.waveprotocol.wave.client.common.util.IntMapJsoView.create();
private JsoIntMap() {}
public static <V> JsoIntMap<V> create() {
return new JsoIntMap<V>();
}
@Override
public void clear() {
backend.clear();
}
@Override
public boolean containsKey(int key) {
return backend.has(key);
}
@Override
public V getExisting(int key) {
return backend.get(key);
}
@Override
public V get(int key, V defaultValue) {
if (backend.has(key)) {
return backend.get(key);
} else {
return defaultValue;
}
}
@Override
public V get(int key) {
return backend.get(key);
}
@Override
public void put(int key, V value) {
backend.put(key, value);
}
@Override
public void putAll(ReadableIntMap<V> pairsToAdd) {
// TODO(ohler): check instanceof here and implement a fallback.
((JsoIntMap<V>) pairsToAdd).backend.addToMap(this.backend);
}
@Override
public void putAll(Map<Integer, V> pairsToAdd) {
for (Map.Entry<Integer, V> e : pairsToAdd.entrySet()) {
backend.put(e.getKey(), e.getValue());
}
}
@Override
public void remove(int key) {
backend.remove(key);
}
@Override
public void each(final ProcV<V> callback) {
backend.each(new ProcV<V>() {
@Override
public void apply(int key, V item) {
callback.apply(key, item);
}
});
}
@Override
public void filter(final EntryFilter<V> filter) {
backend.each(new ProcV<V>() {
@Override
public void apply(int key, V item) {
if (filter.apply(key, item)) {
// entry stays
} else {
backend.remove(key);
}
}
});
}
@Override
public boolean isEmpty() {
return backend.isEmpty();
}
@Override
public int countEntries() {
return backend.countEntries();
}
@Override
public String toString() {
return JsoMapStringBuilder.toString(backend);
}
}