/**
* 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.supplement;
import org.waveprotocol.wave.model.id.WaveletId;
import org.waveprotocol.wave.model.version.HashedVersion;
import java.util.Map;
/**
* Defines the aspects of a wave view in which {@link SupplementedWaveImpl}
* is interested.
*
*/
// TODO(anorth, hearnden): Replace wavelet ids with string conversation ids.
public interface SupplementWaveView {
/**
* @return the ids of all conversational wavelets.
*/
Iterable<WaveletId> getWavelets();
/**
* @return the current version of a wavelet.
*/
long getVersion(WaveletId id);
/**
* @return the signature hash of the specified wavelet
* at its current version.
*/
HashedVersion getSignature(WaveletId id);
/**
* @param id The id of the wavelet to get blip versions for.
* @return The version of each blip in the wavelet with id, ignoring blips
* which are deleted.
*/
Map<String, Long> getBlipVersions(WaveletId id);
/**
* @return true if the account viewing this wave is listed as an explicit
* participant.
*/
boolean isExplicitParticipant();
}