| /************************************************************** |
| * |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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.apache.openoffice.ooxml.parser.action; |
| |
| import java.util.Iterator; |
| |
| /** Iterate over two sources of actions, both given as an Iterable<IAction> |
| * object that can be null. |
| */ |
| public class ActionIterator implements Iterable<IAction> |
| { |
| public ActionIterator ( |
| final Iterable<IAction> aOneStateActions, |
| final Iterable<IAction> aAllStateActions) |
| { |
| maOneStateActions = aOneStateActions; |
| maAllStateActions = aAllStateActions; |
| } |
| |
| |
| |
| |
| @Override public Iterator<IAction> iterator() |
| { |
| return new Iterator<IAction>() |
| { |
| Iterator<IAction> maIterator = null; |
| int mnPhase = 0; |
| |
| @Override |
| public boolean hasNext() |
| { |
| while(true) |
| { |
| if (mnPhase == 2) |
| return false; |
| else if (mnPhase == 0) |
| { |
| if (maIterator == null) |
| if (maOneStateActions == null) |
| { |
| mnPhase = 1; |
| continue; |
| } |
| else |
| maIterator = maOneStateActions.iterator(); |
| if (maIterator.hasNext()) |
| return true; |
| else |
| { |
| maIterator = null; |
| mnPhase = 1; |
| } |
| } |
| else if (mnPhase == 1) |
| { |
| if (maIterator == null) |
| if (maAllStateActions == null) |
| { |
| mnPhase = 2; |
| return false; |
| } |
| else |
| maIterator = maAllStateActions.iterator(); |
| if (maIterator.hasNext()) |
| return true; |
| else |
| { |
| mnPhase = 2; |
| } |
| } |
| } |
| } |
| |
| |
| |
| |
| @Override |
| public IAction next() |
| { |
| return maIterator.next(); |
| } |
| |
| |
| |
| |
| @Override |
| public void remove() |
| { |
| } |
| }; |
| } |
| |
| |
| |
| |
| private final Iterable<IAction> maOneStateActions; |
| private final Iterable<IAction> maAllStateActions; |
| } |