platform/vcs-impl/src/com/intellij/openapi/vcs/changes/committed/CompositeChangeListFilteringStrategy.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.committed;
  17
  18 import com.intellij.openapi.vcs.versionBrowser.CommittedChangeList;
  19 import org.jetbrains.annotations.NotNull;
  20
  21 import javax.swing.*;
  22 import javax.swing.event.ChangeListener;
  23 import java.util.ArrayList;
  24 import java.util.HashMap;
  25 import java.util.List;
  26 import java.util.Map;
  27
  28 public class CompositeChangeListFilteringStrategy implements ChangeListFilteringStrategy {
  29   private final Map<String, ChangeListFilteringStrategy> myDelegates;
  30
  31   public CompositeChangeListFilteringStrategy() {
  32     myDelegates = new HashMap<String, ChangeListFilteringStrategy>();
  33   }
  34
  35   public JComponent getFilterUI() {
  36     return null;
  37   }
  38
  39   public void setFilterBase(final List<CommittedChangeList> changeLists) {
  40     for (ChangeListFilteringStrategy delegate : myDelegates.values()) {
  41       delegate.setFilterBase(changeLists);
  42     }
  43   }
  44
  45   public void addChangeListener(final ChangeListener listener) {
  46     // not used
  47     for (ChangeListFilteringStrategy delegate : myDelegates.values()) {
  48       delegate.addChangeListener(listener);
  49     }
  50   }
  51
  52   public void removeChangeListener(final ChangeListener listener) {
  53     // not used
  54     for (ChangeListFilteringStrategy delegate : myDelegates.values()) {
  55       delegate.removeChangeListener(listener);
  56     }
  57   }
  58
  59   public void resetFilterBase() {
  60     for (ChangeListFilteringStrategy delegate : myDelegates.values()) {
  61       delegate.resetFilterBase();
  62     }
  63   }
  64
  65   public void appendFilterBase(List<CommittedChangeList> changeLists) {
  66     for (ChangeListFilteringStrategy delegate : myDelegates.values()) {
  67       delegate.appendFilterBase(changeLists);
  68     }
  69   }
  70
  71   @NotNull
  72   public List<CommittedChangeList> filterChangeLists(final List<CommittedChangeList> changeLists) {
  73     List<CommittedChangeList> result = new ArrayList<CommittedChangeList>(changeLists);
  74     for (ChangeListFilteringStrategy delegate : myDelegates.values()) {
  75       result = delegate.filterChangeLists(result);
  76     }
  77     return result;
  78   }
  79
  80   public void addStrategy(final String key, final ChangeListFilteringStrategy strategy) {
  81     myDelegates.put(key, strategy);
  82   }
  83
  84   public ChangeListFilteringStrategy removeStrategy(final String key) {
  85     return myDelegates.remove(key);
  86   }
  87 }