platform/vcs-log/graph/src/com/intellij/vcs/log/graph/impl/facade/FilterVisibleGraph.java

/*
 * 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.facade;

import com.intellij.openapi.util.Condition;
import com.intellij.vcs.log.graph.GraphCommit;
import com.intellij.vcs.log.graph.actions.GraphAnswer;
import com.intellij.vcs.log.graph.api.LinearGraphWithCommitInfo;
import com.intellij.vcs.log.graph.api.permanent.PermanentGraphInfo;
import com.intellij.vcs.log.graph.api.elements.GraphElement;
import com.intellij.vcs.log.graph.api.printer.PrintElementsManager;
import com.intellij.vcs.log.graph.impl.print.FilterPrintElementsManager;
import com.intellij.vcs.log.graph.impl.visible.FilterGraphWithHiddenNodes;
import com.intellij.vcs.log.graph.impl.visible.adapters.GraphWithHiddenNodesAsGraphWithCommitInfo;
import com.intellij.vcs.log.graph.impl.visible.adapters.LinearGraphAsGraphWithHiddenNodes;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;

import java.util.Map;
import java.util.Set;

public class FilterVisibleGraph<CommitId> extends AbstractVisibleGraph<CommitId> {

  @NotNull
  public static <CommitId> FilterVisibleGraph<CommitId> newInstance(@NotNull final PermanentGraphInfo<CommitId> permanentGraph,
                                                                       @Nullable Set<CommitId> heads,
                                                                       @NotNull final Condition<CommitId> filter) {
    LinearGraphAsGraphWithHiddenNodes branchesGraph = createBranchesGraph(permanentGraph, heads);
    Condition<Integer> isVisibleNode = new Condition<Integer>() {
      @Override
      public boolean value(Integer integer) {
        CommitId commitId = permanentGraph.getPermanentCommitsInfo().getCommitId(integer);
        return filter.value(commitId);
      }
    };
    FilterGraphWithHiddenNodes filterGraphWithHiddenNodes = new FilterGraphWithHiddenNodes(branchesGraph, isVisibleNode);

    GraphWithHiddenNodesAsGraphWithCommitInfo<CommitId> graphWithCommitInfo =
      new GraphWithHiddenNodesAsGraphWithCommitInfo<CommitId>(filterGraphWithHiddenNodes, permanentGraph.getPermanentGraphLayout(),
                                                              permanentGraph.getPermanentCommitsInfo());

    FilterPrintElementsManager printElementsManager = new FilterPrintElementsManager<CommitId>(graphWithCommitInfo,
                                                                                     permanentGraph.getGraphColorManager());
    return new FilterVisibleGraph<CommitId>(graphWithCommitInfo, filterGraphWithHiddenNodes, permanentGraph.getCommitsWithNotLoadParent(),
                                            printElementsManager);
  }

  @NotNull
  @SuppressWarnings("all")
  private final FilterGraphWithHiddenNodes myGraphWithHiddenNodes;

  private FilterVisibleGraph(@NotNull LinearGraphWithCommitInfo<CommitId> linearGraphWithCommitInfo,
                             @NotNull FilterGraphWithHiddenNodes graphWithHiddenNodes,
                             @NotNull Map<CommitId, GraphCommit<CommitId>> commitsWithNotLoadParent,
                             @NotNull PrintElementsManager printElementsManager) {
    super(linearGraphWithCommitInfo, commitsWithNotLoadParent, printElementsManager);
    myGraphWithHiddenNodes = graphWithHiddenNodes;
  }

  @Override
  protected void setLinearBranchesExpansion(boolean collapse) {
    // do nothing
  }

  @NotNull
  protected GraphAnswer<CommitId> clickByElement(@NotNull GraphElement graphElement) {
    // do nothing
    return COMMIT_ID_GRAPH_ANSWER;
  }
}