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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.facet.impl;
import com.intellij.facet.Facet;
import com.intellij.facet.FacetManager;
import com.intellij.facet.FacetManagerAdapter;
import com.intellij.facet.FacetModificationTrackingService;
import com.intellij.openapi.Disposable;
import com.intellij.openapi.module.Module;
import com.intellij.openapi.util.ModificationTracker;
import com.intellij.openapi.util.ModificationTrackerListener;
import com.intellij.openapi.util.Pair;
import com.intellij.openapi.util.SimpleModificationTracker;
import com.intellij.util.EventDispatcher;
import gnu.trove.THashMap;
import org.jetbrains.annotations.NotNull;
import java.util.Map;
/**
* @author nik
*/
public class FacetModificationTrackingServiceImpl extends FacetModificationTrackingService {
private final Map<Facet, Pair<SimpleModificationTracker, EventDispatcher<ModificationTrackerListener>>> myModificationsTrackers =
new THashMap<Facet, Pair<SimpleModificationTracker, EventDispatcher<ModificationTrackerListener>>>();
public FacetModificationTrackingServiceImpl(final Module module) {
module.getMessageBus().connect().subscribe(FacetManager.FACETS_TOPIC, new FacetModificationTrackingListener());
}
@Override
@NotNull
public ModificationTracker getFacetModificationTracker(@NotNull final Facet facet) {
return getFacetInfo(facet).first;
}
private Pair<SimpleModificationTracker, EventDispatcher<ModificationTrackerListener>> getFacetInfo(final Facet facet) {
Pair<SimpleModificationTracker, EventDispatcher<ModificationTrackerListener>> pair = myModificationsTrackers.get(facet);
if (pair == null) {
pair = Pair.create(new SimpleModificationTracker(), EventDispatcher.create(ModificationTrackerListener.class));
myModificationsTrackers.put(facet, pair);
}
return pair;
}
@Override
public void incFacetModificationTracker(@NotNull final Facet facet) {
final Pair<SimpleModificationTracker, EventDispatcher<ModificationTrackerListener>> pair = getFacetInfo(facet);
pair.first.incModificationCount();
pair.second.getMulticaster().modificationCountChanged(facet);
}
@Override
public <T extends Facet> void addModificationTrackerListener(final T facet, final ModificationTrackerListener<? super T> listener, final Disposable parent) {
getFacetInfo(facet).second.addListener(listener, parent);
}
@Override
public void removeModificationTrackerListener(final Facet facet, final ModificationTrackerListener<?> listener) {
getFacetInfo(facet).second.removeListener(listener);
}
private class FacetModificationTrackingListener extends FacetManagerAdapter {
@Override
public void facetConfigurationChanged(@NotNull final Facet facet) {
final Pair<SimpleModificationTracker, EventDispatcher<ModificationTrackerListener>> pair = myModificationsTrackers.get(facet);
if (pair != null) {
pair.first.incModificationCount();
pair.second.getMulticaster().modificationCountChanged(facet);
}
}
@Override
public void facetRemoved(@NotNull final Facet facet) {
myModificationsTrackers.remove(facet);
}
}
}
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