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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.vcs.log.graph.impl.visible;
import com.intellij.openapi.util.Condition;
import com.intellij.util.Consumer;
import com.intellij.util.SmartList;
import com.intellij.vcs.log.graph.api.LinearGraph;
import com.intellij.vcs.log.graph.api.LinearGraphWithHiddenNodes;
import com.intellij.vcs.log.graph.api.elements.GraphEdge;
import com.intellij.vcs.log.graph.api.elements.GraphNode;
import com.intellij.vcs.log.graph.utils.Flags;
import com.intellij.vcs.log.graph.utils.ListenerController;
import com.intellij.vcs.log.graph.utils.impl.BitSetFlags;
import com.intellij.vcs.log.graph.utils.impl.SetListenerController;
import org.jetbrains.annotations.NotNull;
import java.util.List;
public class FilterGraphWithHiddenNodes implements LinearGraphWithHiddenNodes {
@NotNull
private final LinearGraphWithHiddenNodes myDelegateGraph;
@NotNull
private final Flags myVisibleNodes;
@NotNull
private final SetListenerController<UpdateListener> myListenerController = new SetListenerController<UpdateListener>();
public FilterGraphWithHiddenNodes(@NotNull LinearGraphWithHiddenNodes delegateGraph, @NotNull Condition<Integer> isVisibleNode) {
myDelegateGraph = delegateGraph;
myVisibleNodes = new BitSetFlags(delegateGraph.nodesCount());
for (int i = 0; i < delegateGraph.nodesCount(); i++) {
myVisibleNodes.set(i, delegateGraph.nodeIsVisible(i) && isVisibleNode.value(i)); // todo: think about it: may be drop myVisibleNodes
}
addUpdateListener();
}
private void addUpdateListener() {
myDelegateGraph.getListenerController().addListener(new UpdateListener() {
@Override
public void update(final int upNodeIndex, final int downNodeIndex) {
myListenerController.callListeners(new Consumer<UpdateListener>() {
@Override
public void consume(UpdateListener updateListener) {
updateListener.update(upNodeIndex, downNodeIndex);
}
});
}
});
}
@Override
public boolean nodeIsVisible(int nodeIndex) {
return myVisibleNodes.get(nodeIndex);
}
@NotNull
@Override
public GraphNode.Type getNodeType(int nodeIndex) {
return GraphNode.Type.USUAL;
}
@NotNull
@Override
public GraphEdge.Type getEdgeType(int upNodeIndex, int downNodeIndex) {
return GraphEdge.Type.USUAL;
}
@NotNull
@Override
public ListenerController<UpdateListener> getListenerController() {
return myListenerController;
}
@Override
public int nodesCount() {
return myDelegateGraph.nodesCount();
}
@NotNull
@Override
public List<Integer> getUpNodes(int nodeIndex) {
List<Integer> upNodes = new SmartList<Integer>();
for (int upNode : myDelegateGraph.getUpNodes(nodeIndex)) {
if (nodeIsVisible(upNode))
upNodes.add(upNode);
}
return upNodes;
}
@NotNull
@Override
public List<Integer> getDownNodes(int nodeIndex) {
List<Integer> downNodes = new SmartList<Integer>();
for (int downNode : myDelegateGraph.getDownNodes(nodeIndex)) {
if (downNode != LinearGraph.NOT_LOAD_COMMIT && nodeIsVisible(downNode))
downNodes.add(downNode);
}
return downNodes;
}
}
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