| /* |
| * 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.openapi.command; |
| |
| import com.intellij.codeInsight.FileModificationService; |
| import com.intellij.openapi.application.*; |
| import com.intellij.openapi.diagnostic.Logger; |
| import com.intellij.openapi.project.Project; |
| import com.intellij.openapi.util.Computable; |
| import com.intellij.openapi.util.Ref; |
| import com.intellij.openapi.util.ThrowableComputable; |
| import com.intellij.psi.PsiFile; |
| import org.jetbrains.annotations.NonNls; |
| import org.jetbrains.annotations.NotNull; |
| import org.jetbrains.annotations.Nullable; |
| |
| import javax.swing.*; |
| import java.lang.reflect.InvocationTargetException; |
| import java.util.Arrays; |
| import java.util.Collection; |
| |
| public abstract class WriteCommandAction<T> extends BaseActionRunnable<T> { |
| private static final Logger LOG = Logger.getInstance("#com.intellij.openapi.command.WriteCommandAction"); |
| private final String myCommandName; |
| private final String myGroupID; |
| private final Project myProject; |
| private final PsiFile[] myPsiFiles; |
| |
| protected WriteCommandAction(@Nullable Project project, PsiFile... files) { |
| this(project, "Undefined", files); |
| } |
| |
| protected WriteCommandAction(@Nullable Project project, @Nullable @NonNls String commandName, PsiFile... files) { |
| this(project, commandName, null, files); |
| } |
| |
| protected WriteCommandAction(@Nullable final Project project, @Nullable final String commandName, @Nullable final String groupID, PsiFile... files) { |
| myCommandName = commandName; |
| myGroupID = groupID; |
| myProject = project; |
| myPsiFiles = files == null || files.length == 0 ? PsiFile.EMPTY_ARRAY : files; |
| } |
| |
| public final Project getProject() { |
| return myProject; |
| } |
| |
| public final String getCommandName() { |
| return myCommandName; |
| } |
| |
| public String getGroupID() { |
| return myGroupID; |
| } |
| |
| @NotNull |
| @Override |
| public RunResult<T> execute() { |
| Application application = ApplicationManager.getApplication(); |
| if (!application.isDispatchThread() && application.isReadAccessAllowed()) { |
| LOG.error("Must not start write action from within read action in the other thread - deadlock is coming"); |
| } |
| final RunResult<T> result = new RunResult<T>(this); |
| |
| try { |
| if (application.isDispatchThread()) { |
| performWriteCommandAction(result); |
| } |
| else { |
| SwingUtilities.invokeAndWait(new Runnable() { |
| @Override |
| public void run() { |
| performWriteCommandAction(result); |
| } |
| }); |
| } |
| } |
| catch (InvocationTargetException e) { |
| throw new RuntimeException(e.getCause()); // save both stacktraces: current & EDT |
| } |
| catch (InterruptedException ignored) { } |
| return result; |
| } |
| |
| public static boolean ensureFilesWritable(@NotNull final Project project, @NotNull final Collection<PsiFile> psiFiles) { |
| return FileModificationService.getInstance().preparePsiElementsForWrite(psiFiles); |
| } |
| |
| private void performWriteCommandAction(@NotNull final RunResult<T> result) { |
| if (!FileModificationService.getInstance().preparePsiElementsForWrite(Arrays.asList(myPsiFiles))) return; |
| |
| // this is needed to prevent memory leak, since the command is put into undo queue |
| final RunResult[] results = {result}; |
| |
| CommandProcessor.getInstance().executeCommand(getProject(), new Runnable() { |
| @Override |
| public void run() { |
| getApplication().runWriteAction(new Runnable() { |
| @Override |
| public void run() { |
| results[0].run(); |
| results[0] = null; |
| } |
| }); |
| } |
| }, getCommandName(), getGroupID(), getUndoConfirmationPolicy()); |
| } |
| |
| protected boolean isGlobalUndoAction() { |
| return false; |
| } |
| |
| protected UndoConfirmationPolicy getUndoConfirmationPolicy() { |
| return UndoConfirmationPolicy.DO_NOT_REQUEST_CONFIRMATION; |
| } |
| |
| public void performCommand() throws Throwable { |
| //this is needed to prevent memory leak, since command |
| // is put into undo queue |
| final RunResult[] results = {new RunResult<T>(this)}; |
| final Ref<Throwable> exception = new Ref<Throwable>(); |
| |
| CommandProcessor.getInstance().executeCommand(myProject, new Runnable() { |
| @Override |
| public void run() { |
| if (isGlobalUndoAction()) CommandProcessor.getInstance().markCurrentCommandAsGlobal(myProject); |
| exception.set(results[0].run().getThrowable()); |
| results[0] = null; |
| } |
| }, getCommandName(), getGroupID(), getUndoConfirmationPolicy()); |
| |
| Throwable throwable = exception.get(); |
| if (throwable != null) throw throwable; |
| } |
| |
| /** |
| * WriteCommandAction without result |
| */ |
| public abstract static class Simple<T> extends WriteCommandAction<T> { |
| protected Simple(final Project project, PsiFile... files) { |
| super(project, files); |
| } |
| protected Simple(final Project project, final String commandName, final PsiFile... files) { |
| super(project, commandName, files); |
| } |
| |
| protected Simple(final Project project, final String name, final String groupID, final PsiFile... files) { |
| super(project, name, groupID, files); |
| } |
| |
| @Override |
| protected void run(@NotNull final Result<T> result) throws Throwable { |
| run(); |
| } |
| |
| protected abstract void run() throws Throwable; |
| } |
| |
| public static void runWriteCommandAction(Project project, @NotNull final Runnable runnable) { |
| new Simple(project) { |
| @Override |
| protected void run() throws Throwable { |
| runnable.run(); |
| } |
| }.execute(); |
| } |
| |
| public static <T> T runWriteCommandAction(Project project, @NotNull final Computable<T> computable) { |
| return new WriteCommandAction<T>(project) { |
| @Override |
| protected void run(@NotNull Result<T> result) throws Throwable { |
| result.setResult(computable.compute()); |
| } |
| }.execute().getResultObject(); |
| } |
| |
| public static <T, E extends Throwable> T runWriteCommandAction(Project project, @NotNull final ThrowableComputable<T, E> computable) throws E { |
| RunResult<T> result = new WriteCommandAction<T>(project,"") { |
| @Override |
| protected void run(@NotNull Result<T> result) throws Throwable { |
| result.setResult(computable.compute()); |
| } |
| }.execute(); |
| if (result.getThrowable() instanceof Throwable) throw (E)result.getThrowable(); |
| return result.throwException().getResultObject(); |
| } |
| } |
| |