/*
* Copyright 2000-2015 JetBrains s.r.o.
*
* 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.intellij.diff.chains;
import com.intellij.diff.requests.DiffRequest;
import com.intellij.openapi.progress.ProcessCanceledException;
import com.intellij.openapi.progress.ProgressIndicator;
import com.intellij.openapi.util.UserDataHolder;
import com.intellij.openapi.util.UserDataHolderBase;
import com.intellij.openapi.util.text.StringUtil;
import com.intellij.util.Function;
import com.intellij.util.containers.ContainerUtil;
import org.jetbrains.annotations.NotNull;
import java.util.Collections;
import java.util.List;
public class SimpleDiffRequestChain extends UserDataHolderBase implements DiffRequestChain {
@NotNull private final List<DiffRequestProducerWrapper> myRequests;
private int myIndex = 0;
public SimpleDiffRequestChain(@NotNull DiffRequest request) {
this(Collections.singletonList(request));
}
public SimpleDiffRequestChain(@NotNull List<? extends DiffRequest> requests) {
myRequests = ContainerUtil.map(requests, new Function<DiffRequest, DiffRequestProducerWrapper>() {
@Override
public DiffRequestProducerWrapper fun(DiffRequest request) {
return new DiffRequestProducerWrapper(request);
}
});
}
@Override
@NotNull
public List<DiffRequestProducerWrapper> getRequests() {
return myRequests;
}
@Override
public int getIndex() {
return myIndex;
}
@Override
public void setIndex(int index) {
assert index >= 0 && index < myRequests.size();
myIndex = index;
}
public static class DiffRequestProducerWrapper implements DiffRequestProducer {
@NotNull private final DiffRequest myRequest;
public DiffRequestProducerWrapper(@NotNull DiffRequest request) {
myRequest = request;
}
@NotNull
public DiffRequest getRequest() {
return myRequest;
}
@NotNull
@Override
public String getName() {
return StringUtil.notNullize(myRequest.getTitle(), "Change");
}
@NotNull
@Override
public DiffRequest process(@NotNull UserDataHolder context, @NotNull ProgressIndicator indicator)
throws DiffRequestProducerException, ProcessCanceledException {
return myRequest;
}
}
}