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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 com.intellij.openapi.progress.util;
import com.intellij.openapi.progress.ProgressIndicator;
import com.intellij.openapi.util.Key;
import com.intellij.openapi.util.UserDataHolder;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.atomic.AtomicReference;
public class TooManyUsagesStatus {
private static final Key<TooManyUsagesStatus> KEY = Key.create("TooManyUsagesStatus");
private static final NullStatus NULL_STATUS = new NullStatus();
@NotNull
public static TooManyUsagesStatus getFrom(@Nullable ProgressIndicator indicator) {
TooManyUsagesStatus data = indicator instanceof UserDataHolder ? ((UserDataHolder)indicator).getUserData(KEY) : null;
return data == null ? NULL_STATUS : data;
}
public static TooManyUsagesStatus createFor(@NotNull ProgressIndicator indicator) {
TooManyUsagesStatus data = null;
if (indicator instanceof UserDataHolder) {
data = new TooManyUsagesStatus();
((UserDataHolder)indicator).putUserData(KEY, data);
}
return data;
}
// return true if dialog needs to be shown
public boolean switchTooManyUsagesStatus() {
return tooManyUsagesStatus.get() == Status.FEW_USAGES &&
tooManyUsagesStatus.compareAndSet(Status.FEW_USAGES, Status.WARNING_DIALOG_SHOWN);
}
public void userResponded() {
waitWhileUserClick.countDown();
tooManyUsagesStatus.set(Status.USER_RESPONDED);
}
public enum Status {
FEW_USAGES, WARNING_DIALOG_SHOWN, USER_RESPONDED
}
private final AtomicReference<Status> tooManyUsagesStatus = new AtomicReference<Status>(Status.FEW_USAGES);
private final CountDownLatch waitWhileUserClick = new CountDownLatch(1);
public void pauseProcessingIfTooManyUsages() {
if (tooManyUsagesStatus.get() == Status.WARNING_DIALOG_SHOWN) {
//assert ApplicationManager.getApplication().isDispatchThread() || !ApplicationManager.getApplication().isReadAccessAllowed();
try {
waitWhileUserClick.await(1, TimeUnit.SECONDS);
}
catch (InterruptedException ignored) {
}
}
}
private static class NullStatus extends TooManyUsagesStatus {
@Override
public boolean switchTooManyUsagesStatus() {
return false;
}
@Override
public void userResponded() {
}
@Override
public void pauseProcessingIfTooManyUsages() {
}
}
}
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