platform/vcs-impl/src/com/intellij/openapi/vcs/changes/ui/AdditionalLocalChangeActionsInstaller.java

   1 /*
   2  * Copyright 2000-2009 JetBrains s.r.o.
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  * http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16 package com.intellij.openapi.vcs.changes.ui;
  17
  18 import com.intellij.openapi.actionSystem.AnAction;
  19 import com.intellij.openapi.project.Project;
  20 import com.intellij.openapi.vcs.AbstractVcs;
  21 import com.intellij.openapi.vcs.ProjectLevelVcsManager;
  22 import com.intellij.openapi.vcs.changes.Change;
  23 import org.jetbrains.annotations.Nullable;
  24
  25 import java.util.*;
  26
  27 public class AdditionalLocalChangeActionsInstaller {
  28   @Nullable
  29   public static List<AnAction> calculateActions(final Project project, final Collection<Change> changes) {
  30     final ProjectLevelVcsManager plVcsManager = ProjectLevelVcsManager.getInstance(project);
  31     final Map<String, AbstractVcs> map = new HashMap<String, AbstractVcs>();
  32     for (Change change : changes) {
  33       if (change.getAfterRevision() != null) {
  34         final AbstractVcs vcs = plVcsManager.getVcsFor(change.getAfterRevision().getFile());
  35         if ((vcs != null) && (! map.containsKey(vcs.getName()))) {
  36           map.put(vcs.getName(), vcs);
  37         }
  38       }
  39     }
  40     if (map.isEmpty()) {
  41       return null;
  42     }
  43     final List<AnAction> result = new ArrayList<AnAction>(1);
  44     for (AbstractVcs vcs : map.values()) {
  45       final List<AnAction> actions = vcs.getAdditionalActionsForLocalChange();
  46       if (actions != null) {
  47         result.addAll(actions);
  48       }
  49     }
  50     return result;
  51   }
  52 }