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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 com.intellij.codeInsight.actions;
import com.intellij.openapi.command.CommandProcessor;
import com.intellij.openapi.components.ServiceManager;
import com.intellij.openapi.editor.Document;
import com.intellij.openapi.project.Project;
import com.intellij.openapi.util.Condition;
import com.intellij.psi.PsiDocumentManager;
import com.intellij.psi.PsiFile;
import com.intellij.psi.codeStyle.arrangement.Rearranger;
import com.intellij.psi.codeStyle.arrangement.engine.ArrangementEngine;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import java.util.Collections;
import java.util.concurrent.Callable;
import java.util.concurrent.FutureTask;
public class RearrangeCodeProcessor extends AbstractLayoutCodeProcessor {
public static final String COMMAND_NAME = "Rearrange code";
public static final String PROGRESS_TEXT = "Rearranging code...";
@Nullable private Condition<PsiFile> myAcceptCondition;
public RearrangeCodeProcessor(@NotNull AbstractLayoutCodeProcessor previousProcessor,
@Nullable Condition<PsiFile> acceptCondition) {
super(previousProcessor, COMMAND_NAME, PROGRESS_TEXT);
myAcceptCondition = acceptCondition;
}
public RearrangeCodeProcessor(@NotNull Project project,
@NotNull PsiFile[] files,
@NotNull String commandName,
@Nullable Runnable postRunnable)
{
super(project, files, PROGRESS_TEXT, commandName, postRunnable, false);
}
public boolean shouldRearrangeFile(@NotNull PsiFile file) {
return myAcceptCondition == null || myAcceptCondition.value(file);
}
@NotNull
@Override
protected FutureTask<Boolean> prepareTask(@NotNull final PsiFile file, boolean processChangedTextOnly) {
return new FutureTask<Boolean>(new Callable<Boolean>() {
@Override
public Boolean call() throws Exception {
if (!shouldRearrangeFile(file)) return true;
RearrangeCommand rearranger = new RearrangeCommand(myProject, file, COMMAND_NAME);
if (rearranger.couldRearrange()) {
rearranger.run();
return true;
}
return false;
}
});
}
}
class RearrangeCommand {
@NotNull private PsiFile myFile;
@NotNull private String myCommandName;
@NotNull private Project myProject;
private Document myDocument;
private Runnable myCommand;
RearrangeCommand(@NotNull Project project, @NotNull PsiFile file, @NotNull String commandName) {
myProject = project;
myFile = file;
myCommandName = commandName;
myDocument = PsiDocumentManager.getInstance(project).getDocument(file);
}
boolean couldRearrange() {
return myDocument != null && Rearranger.EXTENSION.forLanguage(myFile.getLanguage()) != null;
}
void run() {
assert myDocument != null;
prepare();
try {
CommandProcessor.getInstance().executeCommand(myProject, myCommand, myCommandName, null);
}
finally {
PsiDocumentManager.getInstance(myProject).commitDocument(myDocument);
}
}
private void prepare() {
final ArrangementEngine engine = ServiceManager.getService(myProject, ArrangementEngine.class);
myCommand = new Runnable() {
@Override
public void run() {
engine.arrange(myFile, Collections.singleton(myFile.getTextRange()));
}
};
PsiDocumentManager.getInstance(myProject).doPostponedOperationsAndUnblockDocument(myDocument);
}
}
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