plugins/github/src/org/jetbrains/plugins/github/util/GithubAuthDataHolder.java


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/*
 * Copyright 2000-2013 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 org.jetbrains.plugins.github.util;

import com.intellij.openapi.application.ModalityState;
import com.intellij.openapi.util.ThrowableComputable;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;


public class GithubAuthDataHolder {
  @NotNull private GithubAuthData myAuthData;

  public GithubAuthDataHolder(@NotNull GithubAuthData auth) {
    myAuthData = auth;
  }

  @NotNull
  public synchronized GithubAuthData getAuthData() {
    return myAuthData;
  }

  public synchronized <T extends Throwable> void runTransaction(@NotNull GithubAuthData expected,
                                                                @NotNull ThrowableComputable<GithubAuthData, T> task) throws T {
    if (expected != myAuthData) {
      return;
    }

    myAuthData = task.compute();
  }

  public static GithubAuthDataHolder createFromSettings(@Nullable ModalityState state) {
    return new GithubAuthDataHolder(GithubSettings.getInstance().getAuthData(state));
  }
}