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/*
* Copyright 2000-2014 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.dvcs.ui;
import com.intellij.dvcs.repo.Repository;
import com.intellij.openapi.project.Project;
import com.intellij.openapi.util.Condition;
import com.intellij.util.containers.ContainerUtil;
import com.intellij.util.containers.MultiMap;
import com.intellij.vcs.log.VcsFullCommitDetails;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import java.util.Collection;
import java.util.Map;
public abstract class VcsLogOneCommitPerRepoAction<Repo extends Repository> extends VcsLogAction<Repo> {
@Override
protected void actionPerformed(@NotNull Project project, @NotNull MultiMap<Repo, VcsFullCommitDetails> grouped) {
Map<Repo, VcsFullCommitDetails> singleElementMap = convertToSingleElementMap(grouped);
assert singleElementMap != null;
actionPerformed(project, singleElementMap);
}
@Override
protected boolean isEnabled(@NotNull MultiMap<Repo, VcsFullCommitDetails> grouped) {
return allValuesAreSingletons(grouped);
}
protected abstract void actionPerformed(@NotNull Project project, @NotNull Map<Repo, VcsFullCommitDetails> commits);
private boolean allValuesAreSingletons(@NotNull MultiMap<Repo, VcsFullCommitDetails> grouped) {
return !ContainerUtil.exists(grouped.entrySet(), new Condition<Map.Entry<Repo, Collection<VcsFullCommitDetails>>>() {
@Override
public boolean value(Map.Entry<Repo, Collection<VcsFullCommitDetails>> entry) {
return entry.getValue().size() != 1;
}
});
}
@Nullable
private Map<Repo, VcsFullCommitDetails> convertToSingleElementMap(@NotNull MultiMap<Repo, VcsFullCommitDetails> groupedCommits) {
Map<Repo, VcsFullCommitDetails> map = ContainerUtil.newHashMap();
for (Map.Entry<Repo, Collection<VcsFullCommitDetails>> entry : groupedCommits.entrySet()) {
Collection<VcsFullCommitDetails> commits = entry.getValue();
if (commits.size() != 1) {
return null;
}
map.put(entry.getKey(), commits.iterator().next());
}
return map;
}
}
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