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/*
* 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 org.jetbrains.idea.maven.utils;
import com.intellij.ProjectTopics;
import com.intellij.openapi.Disposable;
import com.intellij.openapi.application.*;
import com.intellij.openapi.application.impl.LaterInvocator;
import com.intellij.openapi.diagnostic.Logger;
import com.intellij.openapi.editor.EditorFactory;
import com.intellij.openapi.editor.event.*;
import com.intellij.openapi.project.DumbService;
import com.intellij.openapi.project.Project;
import com.intellij.openapi.roots.ModuleRootEvent;
import com.intellij.openapi.roots.ModuleRootListener;
import com.intellij.util.messages.MessageBusConnection;
import com.intellij.util.ui.update.MergingUpdateQueue;
import com.intellij.util.ui.update.Update;
import org.jetbrains.annotations.NotNull;
import javax.swing.*;
import java.util.concurrent.atomic.AtomicInteger;
public class MavenMergingUpdateQueue extends MergingUpdateQueue {
private static final Logger LOG = Logger.getInstance(MavenMergingUpdateQueue.class);
private final AtomicInteger mySuspendCounter = new AtomicInteger(0);
public MavenMergingUpdateQueue(String name,
int mergingTimeSpan,
boolean isActive,
Disposable parent) {
this(name, mergingTimeSpan, isActive, ANY_COMPONENT, parent);
}
public MavenMergingUpdateQueue(String name,
int mergingTimeSpan,
boolean isActive,
JComponent modalityStateComponent,
Disposable parent) {
super(name, mergingTimeSpan, isActive, modalityStateComponent, parent, null, false);
}
@Override
public void queue(@NotNull Update update) {
boolean passThrough = false;
if (ApplicationManager.getApplication().isUnitTestMode()) {
passThrough = isPassThrough();
}
else if (MavenUtil.isNoBackgroundMode()) {
passThrough = true;
}
if (passThrough) {
update.run();
return;
}
super.queue(update);
}
public void makeUserAware(final Project project) {
AccessToken accessToken = ReadAction.start();
try {
EditorEventMulticaster multicaster = EditorFactory.getInstance().getEventMulticaster();
multicaster.addCaretListener(new CaretAdapter() {
public void caretPositionChanged(CaretEvent e) {
MavenMergingUpdateQueue.this.restartTimer();
}
}, this);
multicaster.addDocumentListener(new DocumentAdapter() {
public void documentChanged(DocumentEvent event) {
MavenMergingUpdateQueue.this.restartTimer();
}
}, this);
project.getMessageBus().connect(this).subscribe(ProjectTopics.PROJECT_ROOTS, new ModuleRootListener() {
int beforeCalled;
public void beforeRootsChange(ModuleRootEvent event) {
if (beforeCalled++ == 0) {
suspend();
}
}
public void rootsChanged(ModuleRootEvent event) {
if (beforeCalled == 0)
return; // This may occur if listener has been added between beforeRootsChange() and rootsChanged() calls.
if (--beforeCalled == 0) {
resume();
MavenMergingUpdateQueue.this.restartTimer();
}
}
});
}
finally {
accessToken.finish();
}
}
public void makeDumbAware(final Project project) {
AccessToken accessToken = ReadAction.start();
try {
MessageBusConnection connection = project.getMessageBus().connect(this);
connection.subscribe(DumbService.DUMB_MODE, new DumbService.DumbModeListener() {
public void enteredDumbMode() {
suspend();
}
public void exitDumbMode() {
resume();
}
});
if (DumbService.getInstance(project).isDumb()) {
suspend();
}
}
finally {
accessToken.finish();
}
}
public void makeModalAware(Project project) {
MavenUtil.invokeAndWait(project, new Runnable() {
public void run() {
final ModalityStateListener listener = new ModalityStateListener() {
public void beforeModalityStateChanged(boolean entering) {
if (entering) {
suspend();
}
else {
resume();
}
}
};
LaterInvocator.addModalityStateListener(listener, MavenMergingUpdateQueue.this);
if (MavenUtil.isInModalContext()) {
suspend();
}
}
});
}
@Override
public void suspend() {
if (mySuspendCounter.incrementAndGet() == 1) {
super.suspend();
}
}
@Override
public void resume() {
int c = mySuspendCounter.decrementAndGet();
if (c <= 0) {
if (c < 0) {
mySuspendCounter.set(0);
LOG.error("Invalid suspend counter state", new Exception());
}
super.resume();
}
}
}
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