/*
* Copyright 2011 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.
*/
package com.google.walkaround.wave.client.rpc;
import com.google.walkaround.slob.shared.MessageException;
import org.waveprotocol.wave.client.common.util.JsoView;
import org.waveprotocol.wave.model.util.CollectionUtils;
import java.util.List;
/**
* Fetches attachment information.
*
* @author danilatos@google.com (Daniel Danilatos)
*/
public class AttachmentInfoService {
public interface Callback {
void onSuccess(JsoView data);
void onConnectionError(Throwable e);
void onFatalError(Throwable e);
}
private final Rpc rpc;
private final String serviceName = "attachmentinfo";
public AttachmentInfoService(Rpc rpc) {
this.rpc = rpc;
}
public void fetchInfo(List<String> attachmentIds, final Callback callback) {
StringBuilder b = new StringBuilder();
for (String id : attachmentIds) {
if (b.length() > 0) {
b.append(',');
}
if (id.contains(",")) {
throw new IllegalArgumentException("Attachment id '" + id + "' contains a comma");
}
b.append(id);
}
rpc.makeRequest(Rpc.Method.POST, serviceName, CollectionUtils.newStringMap(
"ids", b.toString()),
new Rpc.RpcCallback() {
@Override
public void onSuccess(String data) throws MessageException {
JsoView json = RpcUtil.evalPrefixed(data);
callback.onSuccess(json);
}
@Override
public void onConnectionError(Throwable e) {
callback.onConnectionError(e);
}
@Override
public void onFatalError(Throwable e) {
callback.onFatalError(e);
}
});
}
}