| /* |
| * Copyright 2000-2009 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.diagnostic.Logger; |
| import org.jetbrains.annotations.NotNull; |
| import org.jetbrains.annotations.Nullable; |
| |
| import javax.swing.*; |
| |
| public abstract class WriteAction<T> extends BaseActionRunnable<T> { |
| private static final Logger LOG = Logger.getInstance("#com.intellij.openapi.application.WriteAction"); |
| @NotNull |
| @Override |
| public RunResult<T> execute() { |
| final RunResult<T> result = new RunResult<T>(this); |
| |
| final Application application = ApplicationManager.getApplication(); |
| if (application.isWriteAccessAllowed()) { |
| result.run(); |
| return result; |
| } |
| |
| try { |
| if (!application.isDispatchThread() && application.isReadAccessAllowed()) { |
| LOG.error("Must not start write action from within read action in the other thread - deadlock is coming"); |
| } |
| Runnable runnable = new Runnable() { |
| @Override |
| public void run() { |
| application.runWriteAction(new Runnable() { |
| @Override |
| public void run() { |
| result.run(); |
| } |
| }); |
| } |
| }; |
| if (application.isDispatchThread()) { |
| runnable.run(); |
| } |
| else if (application.isReadAccessAllowed()) { |
| LOG.error("Calling write action from read-action leads to deadlock."); |
| } |
| else { |
| SwingUtilities.invokeAndWait(runnable); |
| } |
| } |
| catch (Exception e) { |
| if (isSilentExecution()) { |
| result.setThrowable(e); |
| } |
| else { |
| if (e instanceof RuntimeException) throw (RuntimeException)e; |
| throw new Error(e); |
| } |
| } |
| return result; |
| } |
| |
| @NotNull |
| public static AccessToken start() { |
| return start(null); |
| } |
| |
| @NotNull |
| public static AccessToken start(@Nullable Class clazz) { |
| return ApplicationManager.getApplication().acquireWriteActionLock(clazz); |
| } |
| } |