| /* |
| * Copyright 2000-2010 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 org.jetbrains.idea.svn.dialogs; |
| |
| import com.intellij.openapi.vcs.CollectionSplitter; |
| import com.intellij.openapi.vcs.versionBrowser.CommittedChangeList; |
| |
| import java.util.List; |
| |
| public class SvnChangeListsPageEngine implements PageEngine<List<CommittedChangeList>> { |
| private List<List<CommittedChangeList>> mySplitData; |
| private int myIdx; |
| |
| public SvnChangeListsPageEngine(final List<CommittedChangeList> data, final int pageSize) { |
| final CollectionSplitter<CommittedChangeList> splitter = new CollectionSplitter<CommittedChangeList>(pageSize); |
| mySplitData = splitter.split(data); |
| myIdx = 0; |
| } |
| |
| public List<CommittedChangeList> getCurrent() { |
| return mySplitData.get(myIdx); |
| } |
| |
| public boolean hasNext() { |
| return myIdx < (mySplitData.size() - 1); |
| } |
| |
| public boolean hasPrevious() { |
| return myIdx > 0; |
| } |
| |
| public List<CommittedChangeList> next() { |
| if (! hasNext()) return null; |
| ++ myIdx; |
| return mySplitData.get(myIdx); |
| } |
| |
| public List<CommittedChangeList> previous() { |
| if (! hasPrevious()) return null; |
| -- myIdx; |
| return mySplitData.get(myIdx); |
| } |
| } |