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/*
* Copyright 2000-2011 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 git4idea.validators;
import com.intellij.openapi.ui.InputValidatorEx;
import git4idea.GitBranch;
import git4idea.branch.GitBranchUtil;
import git4idea.branch.GitBranchesCollection;
import git4idea.repo.GitRepository;
import org.jetbrains.annotations.NotNull;
import java.util.Collection;
/**
* <p>
* In addition to {@link git4idea.validators.GitRefNameValidator} checks that the entered branch name doesn't conflict
* with any existing local or remote branch.
* </p>
* <p>Use it when creating new branch.</p>
* <p>
* If several repositories are specified (to create a branch in all of them at once, for example), all branches of all repositories are
* checked for conflicts.
* </p>
*
* @author Kirill Likhodedov
*/
public final class GitNewBranchNameValidator implements InputValidatorEx {
private final Collection<GitRepository> myRepositories;
private String myErrorText;
private GitNewBranchNameValidator(@NotNull Collection<GitRepository> repositories) {
myRepositories = repositories;
}
public static GitNewBranchNameValidator newInstance(@NotNull Collection<GitRepository> repositories) {
return new GitNewBranchNameValidator(repositories);
}
@Override
public boolean checkInput(@NotNull String inputString) {
if (!GitRefNameValidator.getInstance().checkInput(inputString)){
myErrorText = "Invalid name for branch";
return false;
}
return checkBranchConflict(inputString);
}
private boolean checkBranchConflict(@NotNull String inputString) {
if (isNotPermitted(inputString) || conflictsWithLocalBranch(inputString) || conflictsWithRemoteBranch(inputString)) {
return false;
}
myErrorText = null;
return true;
}
private boolean isNotPermitted(@NotNull String inputString) {
if (inputString.equalsIgnoreCase("head")) {
myErrorText = "Branch name " + inputString + " is not valid";
return true;
}
return false;
}
private boolean conflictsWithLocalBranch(@NotNull String inputString) {
return conflictsWithLocalOrRemote(inputString, true, " already exists");
}
private boolean conflictsWithRemoteBranch(@NotNull String inputString) {
return conflictsWithLocalOrRemote(inputString, false, " clashes with remote branch with the same name");
}
private boolean conflictsWithLocalOrRemote(@NotNull String inputString, boolean local, @NotNull String message) {
int conflictsWithCurrentName = 0;
for (GitRepository repository : myRepositories) {
if (inputString.equals(repository.getCurrentBranchName())) {
conflictsWithCurrentName++;
}
else {
GitBranchesCollection branchesCollection = repository.getBranches();
Collection<? extends GitBranch> branches = local ? branchesCollection.getLocalBranches() : branchesCollection.getRemoteBranches();
for (GitBranch branch : branches) {
if (branch.getName().equals(inputString)) {
myErrorText = "Branch name " + inputString + message;
if (myRepositories.size() > 1 && !allReposHaveBranch(inputString, local)) {
myErrorText += " in repository " + repository.getPresentableUrl();
}
return true;
}
}
}
}
if (conflictsWithCurrentName == myRepositories.size()) {
myErrorText = "You are already on branch " + inputString;
return true;
}
return false;
}
private boolean allReposHaveBranch(String inputString, boolean local) {
for (GitRepository repository : myRepositories) {
GitBranchesCollection branchesCollection = repository.getBranches();
Collection<? extends GitBranch> branches = local ? branchesCollection.getLocalBranches() : branchesCollection.getRemoteBranches();
if (!GitBranchUtil.convertBranchesToNames(branches).contains(inputString)) {
return false;
}
}
return true;
}
@Override
public boolean canClose(String inputString) {
return checkInput(inputString);
}
@Override
public String getErrorText(String inputString) {
return myErrorText;
}
}
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