/**
* Copyright 2009 Google Inc.
*
* 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.
*
*/
package org.waveprotocol.wave.model.document.operation.impl;
import org.waveprotocol.wave.model.document.operation.Attributes;
import org.waveprotocol.wave.model.document.operation.AttributesUpdate;
import org.waveprotocol.wave.model.document.operation.util.ImmutableStateMap;
import org.waveprotocol.wave.model.util.Preconditions;
import org.waveprotocol.wave.model.util.ReadableStringMap;
import org.waveprotocol.wave.model.util.ReadableStringMap.ProcV;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.Map;
public class AttributesImpl
extends ImmutableStateMap<AttributesImpl, AttributesUpdate>
implements Attributes {
public AttributesImpl() {
super();
}
public AttributesImpl(Map<String, String> map) {
super(map);
}
AttributesImpl(List<Attribute> attributes) {
super(attributes);
}
public AttributesImpl(String... pairs) {
super(pairs);
}
@Override
protected AttributesImpl createFromList(List<Attribute> attributes) {
return new AttributesImpl(attributes);
}
public static AttributesImpl fromSortedAttributes(List<Attribute> sortedAttributes) {
checkAttributesSorted(sortedAttributes);
return fromSortedAttributesUnchecked(sortedAttributes);
}
public static AttributesImpl fromSortedAttributesUnchecked(List<Attribute> sortedAttributes) {
return new AttributesImpl(sortedAttributes);
}
public static AttributesImpl fromUnsortedAttributes(List<Attribute> unsortedAttributes) {
List<Attribute> sorted = new ArrayList<Attribute>(unsortedAttributes);
Collections.sort(sorted, comparator);
// Use the checked variant here to check for duplicates.
return fromSortedAttributes(sorted);
}
public static AttributesImpl fromStringMap(ReadableStringMap<String> stringMap) {
final List<Attribute> attrs = new ArrayList<Attribute>();
stringMap.each(new ProcV<String>() {
@Override
public void apply(String key, String value) {
attrs.add(new Attribute(key, value));
}
});
return fromUnsortedAttributes(attrs);
}
/**
* Sorts the input but doesn't check for duplicate names.
*/
public static AttributesImpl fromUnsortedAttributesUnchecked(List<Attribute> unsortedAttributes) {
List<Attribute> sorted = new ArrayList<Attribute>(unsortedAttributes);
Collections.sort(sorted, comparator);
return fromSortedAttributesUnchecked(sorted);
}
/**
* Sorts the input but doesn't check for duplicate names.
*
* @param pairs [name, value, name, value, ...]
*/
public static Attributes fromUnsortedPairsUnchecked(String ... pairs) {
Preconditions.checkArgument(pairs.length % 2 == 0, "pairs.length must be even");
List<Attribute> attrs = new ArrayList<Attribute>();
for (int i = 0; i < pairs.length; i += 2) {
attrs.add(new Attribute(pairs[i], pairs[i + 1]));
}
return fromUnsortedAttributesUnchecked(attrs);
}
}