| /* |
| * Copyright 2000-2011 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.vcs; |
| |
| import com.intellij.openapi.Disposable; |
| import com.intellij.openapi.application.ApplicationManager; |
| import com.intellij.openapi.util.Comparing; |
| import com.intellij.util.Consumer; |
| import com.intellij.util.PairConsumer; |
| import org.jetbrains.annotations.Nullable; |
| |
| import java.util.concurrent.atomic.AtomicReference; |
| |
| /** |
| * @author irengrig |
| * Date: 6/29/11 |
| * Time: 11:38 PM |
| */ |
| public class GenericDetailsLoader<Id, Data> implements Details<Id,Data>, Disposable { |
| private final Consumer<Id> myLoader; |
| private final ValueConsumer<Id, Data> myValueConsumer; |
| private final AtomicReference<Id> myCurrentlySelected; |
| private boolean myIsDisposed; |
| |
| /** |
| * @param loader - is called in AWT. Should call {@link #take} with data when ready. Also in AWT |
| * @param valueConsumer - is called in AWT. passive, just benefits from details loading |
| */ |
| public GenericDetailsLoader(final Consumer<Id> loader, final PairConsumer<Id, Data> valueConsumer) { |
| myLoader = loader; |
| myValueConsumer = new ValueConsumer<Id, Data>(valueConsumer); |
| myCurrentlySelected = new AtomicReference<Id>(null); |
| } |
| |
| @CalledInAwt |
| public void updateSelection(@Nullable final Id id, boolean force) { |
| ApplicationManager.getApplication().assertIsDispatchThread(); |
| if (myIsDisposed) return; |
| myValueConsumer.setId(id); |
| |
| final Id wasId = myCurrentlySelected.getAndSet(id); |
| if (force || ! Comparing.equal(id, wasId)) { |
| myLoader.consume(id); |
| } |
| } |
| |
| public void setCacheConsumer(final PairConsumer<Id, Data> cacheConsumer) { |
| myValueConsumer.setCacheConsumer(cacheConsumer); |
| } |
| |
| @CalledInAwt |
| @Override |
| public void take(Id id, Data data) throws AlreadyDisposedException { |
| ApplicationManager.getApplication().assertIsDispatchThread(); |
| if (myIsDisposed) throw new AlreadyDisposedException(); |
| myValueConsumer.consume(id, data); |
| } |
| |
| public void resetValueConsumer() { |
| myValueConsumer.reset(); |
| } |
| |
| @CalledInAny |
| @Override |
| public Id getCurrentlySelected() { |
| return myCurrentlySelected.get(); |
| } |
| |
| @Override |
| public void dispose() { |
| myIsDisposed = true; |
| } |
| } |