/*
* Copyright 2000-2012 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.openapi.application;
import com.intellij.openapi.util.Computable;
import com.intellij.openapi.util.ThrowableComputable;
import com.intellij.util.ThrowableRunnable;
import org.jetbrains.annotations.NotNull;
public abstract class ReadAction<T> extends BaseActionRunnable<T> {
@NotNull
@Override
public RunResult<T> execute() {
final RunResult<T> result = new RunResult<T>(this);
return ApplicationManager.getApplication().runReadAction(new Computable<RunResult<T>>() {
@Override
public RunResult<T> compute() {
return result.run();
}
});
}
public static AccessToken start() {
return ApplicationManager.getApplication().acquireReadActionLock();
}
public static <E extends Throwable> void run(@NotNull ThrowableRunnable<E> action) throws E {
AccessToken token = start();
try {
action.run();
} finally {
token.finish();
}
}
public static <T, E extends Throwable> T compute(@NotNull ThrowableComputable<T, E> action) throws E {
AccessToken token = start();
try {
return action.compute();
} finally {
token.finish();
}
}
}